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Description  |
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BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a moving type copying apparatus where
image is read or recorded during moving.
2. Description of the Prior Art
Such a moving type copying apparatus has not been proposed in the prior
art. In a copying apparatus of the prior art, finder system is used in
order to perform positioning during read action. However, since there is
no means for confirming the content during record action, the content to
be recorded must be forecasted or the positioning must be performed in
trial and error. Consequently, if one image is formed by copying of
several times, the complete positioning following the previous copying
cannot be performed.
On the other hand, a scanner (reading apparatus) is proposed in Japanese
patent application laid-open No. 33774/1981 and No. 151269/1984. In this
case, an image sensor is used but a one-dimensional line sensor.
Consequently, it can display the read data but cannot be utilized in the
positioning to a paper during record action.
In any of the above-mentioned patent applications in the prior art, several
lines including the line being read are displayed. The former uses a light
emission element for display, and the latter uses a liquid crystal
therefor.
Consequently, in the prior art, the reading apparatus displays information
being read, but is not used in edit function. Also the apparatus in the
prior art is not provided with edit function of image. Further, in a
moving type reading apparatus in the prior art, edit function is not
particularly provided.
In a moving type reading apparatus, if it is not clear what portion of
stored image data should be written during record action, the apparatus is
inconvenient in use. When image extending over several lines is outputted,
it is quite difficult to align the printing top position. Further,
unnecessary portion (e.g., blank) of the stored image data cannot be cut.
Japanese patent application laid-open No. 20476/1983 discloses an apparatus
having means for positioning between the previous record and the present
record. This is a printer having a drum-like type holder, and a
positioning scale plate is installed on the printer in order to align the
printing position.
In this system, however, since positioning is performed based on a ruled
line printed on a paper, the printing position cannot be aligned if there
is no ruled line.
FIG. 44 shows an image forming apparatus A of manual moving type, where
subscanning is performed by moving the apparatus. In this case, travelling
rollers 111, 112 are installed respectively at front and rear sides in the
moving direction shown by arrow Y, and a record head 113 constituted by a
thermal head is installed between the travelling rollers 111, 112 and
supplied with spring force downward. A thermal transfer ribbon 114 is
suspended to a record surface (plural printing elements being heater
elements arranged in perpendicular direction to the paper surface) of the
recording head 113, and fed in arrow a direction corresponding to the
moving amount of the apparatus A. Numeral 115 designates an original wound
portion of the ink ribbon 114, and numeral 116 designates a taking portion
thereof Numeral 117 designates an encoder for detecting the rotation
amount of one travelling roller 111, i.e., the moving amount of the
apparatus A and generating the timing signal of the record. Numeral 118
designates a ribbon guide.
In the apparatus A, if the travelling rollers 111, 112 are held on a
substance D to be recorded (ordinary paper) and moved in the arrow Y
direction and subjected to the subscanning, the printing elements of the
recording surface of the recording head 113 are selectively heated based
on the image data signal every time the timing signal comes from the
encoder 117 so that the thermal transfer ribbon 114 is transferred to the
substance D to be recorded and prescribed image is formed on the substance
D to be recorded.
In the apparatus A, however, at a moment that the apparatus A starts the
moving, the ribbon 114 does not always begin to slide on the heater
elements of the recording head 113.
That is, in the apparatus of thermal transfer type, friction may be applied
to the original wound portion 115 by a brake mechanism 119 so as to
prevent sag of the ribbon 114, and resistance is produced in rotation of
the original wound portion 115 or slip of the ribbon in the ribbon guide
118, and further the ribbon in itself is pushed to the substance D to be
recorded and therefore subjected to resistance.
Fixing portion of the head 113 or the ribbon feed guide 118 to the
apparatus A has play although it is slight. Moreover, these will be
deformed although quite slightly when strength is applied thereto, and the
ribbon also will lengthen when tension is applied thereto.
Consequently, immediately after the moving of the apparatus A is started,
the moving amount of the apparatus A may be absorbed in the
above-mentioned resistance, play, lengthening or the like so that the
ribbon 114 does not yet slide on the record head 113.
However, since this point is not considered in the prior art and when the
apparatus A is moved the drive pulse is simultaneously applied to the
printing element in synchronization with the timing pulse as shown in FIG.
45, the printing element continues to apply the heat energy to the same
position of the ribbon before the ribbon begins to slide on the element
surface. As a result, sticking is liable to occur on the heater element of
the ribbon.
The sticking is phenomenon that base of the ribbon is melted by heating
(being excessive) from the heater element of the record head, and the
melted substance adheres to the heater element. As a result, the ribbon
may not be fed.
Above-mentioned problem will occur also in an image forming apparatus of
self moving type. In the apparatus of self moving type, after the moving
start signal is supplied, the apparatus runs for itself and records the
image, thereby the moving speed and the record are effected as previously
programmed.
An optical information reading apparatus is apparatus where an original
document is irradiated by an information reading light source, and
reflected light from the original document is converted in photoelectric
conversion by a light receiving element and then taken as information
(e.g., character information). Such apparatus is exemplified by a copying
machine or a facsimile. In recent years, an apparatus being handy to carry
is developed where information of an original document is read by hand
scan. In such optical information reading apparatus, the original document
is irradiated and necessary exposure amount is secured thereby the clear
original information can be obtained.
For example, in invention described in Japanese patent application
laid-open No. 96954/1985, information reading light source (light emission
element) is continuously lit, and charge storage time of an image sensor
(e.g., CCD) to convert optical information into electric signal is
controlled to become constant. That is, dummy read is performed once and a
shift register is cleared, and then the constant charge storage time is
secured and the information read action is performed again. In another
exposure control method, a shutter to enable high-speed operation is put
in front of an image sensor and the exposure amount is controlled
depending on aperture area of the shutter.
FIG. 54 is a timing chart illustrating an example of an image sensor drive
method according to the abovementioned method in the prior art. In FIG.
54, (a) shows LED lit state, (b) shows timing of original document
information reading signal, and (c) shows scan state of the image sensor.
If the LED is lit as shown in (a) and the write signal comes as shown in
(b), scan of the image sensor (e g., CCD) is performed twice within the
read period tx as shown in (c). The first scan is a dummy scan as above
described.
If the scan time of the image sensor per once is made t1, time t1 is
expressed by following formula.
t1=N.times.S
wherein
N: the picture element number of the image sensor
S: time required to shift the picture element number by one picture element
After lapse of time t2 (t2>t1) from the drive start of the image sensor,
the read action is started again. The information read requires time t1 in
similar manner to the first scan. Consequently, time t1+t2 is necessary
from coming of the read signal until finishing of the original document
information reading.
In the above-mentioned apparatus, the LED as information reading light
source is lit continuously as shown in FIG. 54. Consequently, in an
apparatus of battery drive system such as an optical information reading
apparatus of hand scan system, energy loss is produced and life of the
battery is decreased. Also in the exposure amount control system using the
shutter, the shutter mechanism is expensive and complicated and therefore
this system is not suitable for practice.
SUMMARY OF THE INVENTION
In order to eliminate above-mentioned disadvantages in the prior art, an
object of the invention is to provide a moving type copying apparatus
wherein a display unit is of multiple functions.
In order to attain the above object, the invention is provided with a
display unit having two or more functions among display function of
displaying images in whole or partial region of a reading aperture part
during reading or all images already read, display function of displaying
content of a part or all of stored data during recording or edit content,
and display function of displaying stored image including a record portion
during recording or a record portion capable of being displayed in the
display unit.
Another object of the invention is in that image data at any memory
position can be called during recording and set to the printing top
position and therefore the printing start position of each line can be
aligned during feeding and/or
that unnecessary portion such as blank at the top regarding the portion to
be printed can be deleted and/or
that enlarge/reduce of the stored image data is displayed thereby edit of
data can be performed at high accuracy and/or
that the line feed is urged after data record by one line thereby output
position of the data record extending over several lines can be aligned.
In order to attain the above object the invention provides a moving type
recording apparatus having at least one edit function among
enlarge/reduce, roll up/down, image shift and line end processing.
Another object of the invention is to provide an image recording apparatus
wherein a ruled line is not required, and positioning to the previously
recorded portion can be simply performed for next record.
In order to attain the above object, the invention is provided with a
detecting means for performing detection with respect to the reference
position being prescribed position of the already recorded portion in the
record medium, and the positioning of the record is performed by the
detecting means.
Another object of the invention is to solve abovementioned problems and
make the ribbon slide always on the print element surface of the record
head at start of printing.
In order to attain the above object, the invention is provided with a
record head for recording output image of the record head through a ribbon
onto a substance to be recorded, and the record start timing to the
substance to be recorded is made a time of moving by a prescribed distance
after the moving start of the apparatus.
Another object of the invention is to provide an optical information
reading apparatus which can perform the optimum exposure with little
consumption power in simple constitution.
In order to attain the above object, an optical information reading
apparatus of the invention wherein an original document is scanned by an
information reading light source and reflected light from the original
document is converted in photoelectric conversion by an image sensor and
taken in as information, is characterized in that the ON/OFF timing of the
information reading light source is controlled in synchronization with the
read timing of the original document information.
Foregoing and other objects and features of the invention will be apparent
from the following description together with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a copying apparatus as an embodiment of the
invention;
FIG. 2 is a diagram schematically illustrating an inner mechanism of the
apparatus in FIG. 1;
FIG. 3 is a block diagram of inside of the apparatus;
FIG. 4(a), FIG. 4(b) are diagrams illustrating reading;
FIG. 5 is a diagram illustrating reading;
FIG. 6(a).about.FIG. 6(c) are diagrams illustrating age on an image storage
RAM in edit;
FIG. 7(a).about.FIG. 7(c) are diagrams illustrating image edited and
recorded;
FIG. 8(a), FIG. 8(b) are diagrams illustrating record;
FIG. 9 is a flow chart of operation;
FIG. 10 is a plane view of an operation section of a moving type copying
apparatus as another embodiment of the invention;
FIG. 11 is a flow chart of use procedure;
FIG. 12 is a transition diagram of edit mode state;
FIG. 13 is a flow chart of enlarge;
FIG. 14 is a flow chart of reduce;
FIG. 15 is a diagram illustrating upward image shift by roll up;
FIG. 16 is a flow chart of roll up;
FIG. 17 is a flow chart of roll down;
FIG. 18 is a diagram illustrating left image shift;
FIG. 19 is a flow chart of left image shift;
FIG. 20 is a flow chart of right image shift;
FIG. 21 is a flow chart of line end processing;
FIG. 22 is a perspective view of a copying apparatus as another embodiment
of the invention;
FIG. 23 is a bottom view of the apparatus in FIG. 22;
FIG. 24 is a diagram illustrating a schematic mechanism of the apparatus;
FIG. 25 is a block diagram illustrating function of the apparatus;
FIG. 26 is a flow chart illustrating operation of the apparatus;
FIG. 27 is a plan view of a copying machine having a detecting means;
FIG. 28 is a diagram illustrating record according to the copying apparatus
shown in FIG. 27;
FIG. 29 is a diagram illustrating use of a copying apparatus having a
detecting means as a modification of the detecting means shown in FIG. 27;
FIG. 30 is a plan view of a copying apparatus having a detecting means as
another embodiment;
FIG. 31(a) is a plan view of a copying apparatus having a detecting means
as still another embodiment;
FIG. 31(b) is a fragmentary front view of the apparatus;
FIG. 32(a) is a plan view of a copying apparatus having a detecting means
as a modification of the detecting means shown in FIG. 31;
FIG. 32(b) is a fragmentary front view of the apparatus;
FIG. 33(a) is a plan view of a copying apparatus having a detecting means
as still another embodiment;
FIG. 33(b) is a fragmentary front view of the apparatus;
FIG. 34(a) is a perspective view of a copying apparatus having a detecting
means as a modification of the detecting means in the embodiment of FIG.
33;
FIG. 34(b) is a sectional view of the apparatus;
FIG. 35 is a sectional view of a copying apparatus having a detecting means
as another modification of the detecting means in the embodiment of FIG.
33;
FIG. 36 is a timing chart illustrating another embodiment where the
invention is applied to an image forming apparatus of manual moving type;
FIG. 37 is a timing chart illustrating an embodiment applied to an image
forming apparatus of self moving type;
FIG. 38 is a block diagram in application to an image forming apparatus of
manual moving type;
FIG. 39 is a timing chart of operation of the circuit in FIG. 38;
FIG. 40 is a flow chart of apparatus control in utilization of the circuit
in FIG. 38;
FIG. 41 is a block diagram in application to an image forming apparatus of
manual moving type;
FIG. 42 is a timing chart of operation of the circuit in FIG. 41;
FIG. 43 is a flow chart of apparatus control in utilization of the circuit
in FIG. 41;
FIG. 44 is a schematic constitution diagram of an image forming apparatus
of usual manual moving type in the prior art;
FIG. 45 is a timing chart of drive pulse in the prior art to drive timing
pulse and record head in the apparatus of FIG. 44;
FIG. 46 is a constitution block diagram illustrating another embodiment of
the invention;
FIG. 47 is a timing chart illustrating operation of the apparatus;
FIG. 48 is a constitution block diagram illustrating still another
embodiment of the invention;
FIG. 49 is a diagram illustrating a concrete constitution example of an
image sensor;
FIG. 50 is a timing chart illustrating operation of an image sensor;
FIG. 51(a), FIG. 51(b) are timing charts of information reading operation
in comparison between the prior art and the invention;
FIG. 52 is an electric circuit diagram illustrating a concrete constitution
diagram of the embodiment shown in FIG. 46;
FIG. 53 is a timing chart illustrating operation of each part; and
FIG. 54 is a timing chart illustrating operation of an apparatus in the
prior art.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Embodiments of the invention will now be described. FIG. 1 shows a moving
type copying apparatus as an embodiment. In FIG. 1, numeral 1 designates a
main switch for ON/OFF operation of a power source of the whole apparatus
A. numeral 2 designates a mode change switch for selecting read mode, edit
mode or record mode Numeral 3 designates a start/stop switch which turns
the apparatus A on into operation ready enable state at the operation
start in the selected read or record mode, and turns it off into operation
disable state (stop). Numeral 4 designates a liquid crystal indicator
having a marker 4a at the center in the longitudinal direction. The liquid
crystal indicator 4 acts as a finder to display whole or partial image of
the reading aperture at the read state, and acts to display the memory
content or the edit content to be recorded at the record state, and
further acts to display the stored image including record part during the
recording and displayable record part. Moreover, the liquid crystal
indicator 4 indicates state of the apparatus, for example, discrimination
of record mode or read mode, degree of residual amount of the memory, or
warning of voltage decrease of the battery Numeral 5 designates a key
group for data editing, which is usually covered by a transparent cover 6
so that the key group is not pushed imprudently during other operation.
Key operation of the key group 5 effects enlarge/reduce of data, roll
up/down to shift up or down the image displayed on the indicator 4, image
shift to shift right or left the image on the indicator 4, memory clear,
and the like.
FlG. 2 shows outline of a read mechanism section A1 and a record mechanism
section A.sub.2 within the apparatus A. Moving of the apparatus A is
guided by travelling rollers 7, 8 at front and rear sides, and an encoder
10 for detecting the moving direction and the moving amount (distance) is
connected to one roller 7 through a belt 9. The read mechanism A.sub.1
comprises a read window 11 as a read aperture, an illumination light
source 12 for lighting a surface to be read through the read window 11, a
two-dimensional image sensor 13 which receives reflection light from the
surface to be read corresponding to the read window 11 and reads image of
the light, and a lens 14 for focusing the image of the surface to be read
onto the sensor 13. On the other hand, the record mechanism section
A.sub.2 comprises a record window 15 as a record aperture during
recording, a thermal head 16 falling downward from the record window 15,
and an ink ribbon 17 slidably contacting with a record surface of the head
16.
FIG. 3 shows function blocks within the apparatus A. Numeral 18 designates
a binary circuit where data from the two-dimensional image sensor 13 is
made binary condition, numeral 19 designates an oscillation circuit, and
numeral 20 designates a drive circuit/address counter which drives the
two-dimensional image sensor 13 in response to pulse from the oscillation
circuit 19 and controls a preset counter/gate 21 and a display RAM 22.
Numeral 23 designates a shift register to control the display RAM 22, and
numeral 24 designates a liquid crystal drive circuit to drive the liquid
crystal indicator 4, and numeral 25 designates a switch to be changed by
the mode change, to a-side at the read mode and to b-side at the
record/edit mode. Numeral 26 designates a CPU to control the whole
apparatus, numeral 27 designates a preset value gate, numeral 28
designates an address counter for an image storage RAM 29, numeral 30
designates a switch similar to the switch 25, and numeral 31 designates a
DMA controller.
Operation of the apparatus will be described. First, the power source
switch 1 is turned on, and the mode change switch 2 selects the read mode.
Thereby the illumination power source 12 is lit, and the read action is
performed by the two-dimensional image sensor 13 and the indicator 4
displays the content.
That is, when the mode change switch 2 is operated into the read mode, the
two-dimensional image sensor 13 is normally driven by the oscillator 19
and the drive circuit/address counter 20. Image signal from the
two-dimensional image sensor 13 passes through the binary circuit 18 and
is applied to the preset counter/gate 21. The preset counter/gate 21
performs compression of the image signal according to data supplied
previously from the CPU 26, and transmits the obtained output to the
display RAM 22 through the shift register 23. The content of the display
RAM 22 is read by the display liquid crystal drive circuit 24 and
displayed by the liquid crystal indicator 4.
FIG. 4 shows state of the read display. The two-dimensional image sensor 13
reads portion of width x corresponding to the read window 11 in an
original document D as shown in FIG. 4(a), and the portion of width x is
displayed by the liquid crystal indicator 4 as shown in FIG. 4(b).
Next, the start/stop switch 3 is turned on, and the apparatus A is set to
read enable state (start). The apparatus A is moved in arrow Y direction,
and if the read timing signal coming from the encoder 10 is detected, data
of one line in the image sensor 13 corresponding to position of the marker
4a in the indicator 4 is recognized by the preset value gate 27 and taken
in the image memory RAM 29 by action of the image address counter 28.
Subsequently the above-mentioned operation is repeated according to output
of the encoder 10. After the definite running, the start/stop switch 3 is
turned off into the read stop state. Next, similar operation is repeated
along other line of the original document.
Before describing the edit mode, assume that, as shown in FIG. 5, one image
(two .DELTA. images) extends over three lines and respective read start
points 1, 2, 3 are different. In this case, at the read end point, image
on the image storage RAM 29 becomes as shown in FIG. 6(a). If output of
one line is performed, image as shown in FIG. 7(a) is obtained. Regarding
the second line, since the read start point is different from that of the
first line, if the output (record) is performed in this state, slipped
image will be produced. Consequently, using the edit function, image on
the image storage RAM 29 is previously shifted before performing the
output. In this example, the image may be shifted to the left.
The image shift will be described. In the edit mode, a part of image on the
image storage RAM 29 is always transferred to the display RAM 22 by the
DMA controller 31, and the liquid crystal indicator 4 displays the content
of the display RAM 22. If the edit key 5a (image shift key in this case)
in the key group 5 is pushed, the transfer control address of the DMA
controller 31 is rewritten by the CPU 26 and portion on the image storage
RAM 29 being different from that before pushing the key is transferred to
the display RAM 22 and displayed. This operation is continued until the
image comes to the desired position, and then the output is performed
thereby the slipless image can be obtained. This state is shown in FIG.
6(b), FIG. 7(b). Image of the second line coincides with image of the
first line in FIG. 6(b). and the image of the second line is recorded as
shown in FIG. 7(b). Record start position of the second line is the same
as that of the first line The above-mentioned operation is repeated, and
finally, as shown in FIG. 6(c), the image of the image storage RAM 29
becomes coincident with the image to be read as shown in FIG. 5. That is,
the image recorded over three lines becomes the slipless image as shown in
FIG. 7(c) by scanning of three times.
Operation of the image record will be described. If the record mode is
selected by the mode change switch 2, the transfer control address of the
DMA controller 31 is determined by the CPU 26 so that the top of the
stored image coincides with the write start position. Several lines
including the write start position (for example, 1.about.640 dot rows, 320
dot columns) are displayed on the liquid crystal indicator 4.
The display content is confirmed and positioning is performed so that the
first column of data comes to the record position, and then the start/stop
switch 3 is turned on. If the apparatus A is moved and the write timing
signal from the encoder 10 is detected, data of one line corresponding to
the marker 4a of the liquid crystal indicator 4 is transferred from the
image storage RAM 29 to the thermal head 16 and recorded. At the same
time, the transfer control address of the DMA 31 is rewritten and the
display is scrolled, and the image to be recorded is shifted by one line
in the reverse direction to the arrow Y direction. If the position
relation of the scanning to the first scanning need not be considered, the
above-mentioned scanning is continued. If it must be considered, the
start/stop switch 3 is turned off, and content of the image storage RAM 29
for the second scanning is confirmed by the indicator 4. The edit key is
operated as described in the above-mentioned edit mode and the top column
of data for the second scanning is made coincident with the marker 4a ,
and then scanning is performed. The above-mentioned state is shown in FIG.
8(a), FIG. 8(b). Symbol C designates a recording paper. The edit mode and
the record mode act interactive. FIG. 9 is a flow chart of the
above-mentioned operation.
The indicator 4 can be provided with function of displaying images in whole
or partial region of the read aperture during the read action or all
images already read, function of displaying partial or whole content of
the storage data during the record action or the edit content, and
function of displaying stored images including record portion during the
recording or record portion displayable on the indicator. However, only
two functions among them will do.
According to the invention as above described, the read or record action
can be simply performed by confirming the display unit. Particularly the
positioning can be performed thereby the recording becomes quite easy.
Next, another embodiment of an apparatus of the invention having edit
function will be described.
FIG. 10 is a view illustrating details of an operation section. Numeral 41
designates a power source switch, numeral 42 designates a mode switch for
selecting mode (state of the apparatus), numeral 43 designates a
start/stop switch, numeral 44 designates a line end display unit
constituted by LED, numeral 45 designates an edit key for performing right
shift, left shift, roll up, roll down or the like, numeral 46 a scale
factor initialization switch, numeral 47 designates a zoom down (reduce)
switch, numeral 48 designates a zoom up (enlarge) switch, numeral 49a
designates a horizontal zoom ON/OFF switch, numeral 49b designates a
vertical zoom ON/OFF switch, numeral 50 designates a status display unit
constituted by LCD, numeral 51 designates a memory use amount display unit
constituted by LCD for indicating data amount stored in the memory,
numeral 52 designates a roll position display unit constituted by LCD,
numeral 53 designates an image display panel constituted by LCD, and
numeral 54 designates a zoom display panel (scale factor display panel)
constituted by LCD for indicating scale factor of zoom in vertical and
horizontal directions (the number of data dots per one display picture
element).
The line end display unit 44 is lit when the start/stop switch 43 is pushed
after one line is read in the input mode, and put out when the start/stop
switch 43 is pushed again at the top position of next line. In the edit
output mode, the line end display unit 44 is lit when the image attains to
the line end. In the case of either input or output, indication is
effected regarding that the apparatus in moving scanning attains to the
line feed point.
The edit key 45 is used to read any portion of image data stored in a
memory within the apparatus, and image data is shifted to upper side by
pushing the key 45a, to lower side by pushing the key 45b, to the left by
pushing the key 45c and to the right by pushing the key 45d. The accessed
image data is displayed on the image display panel 53 in definite range.
The scale factor initialization switch 46, the zoom down switch 47, the
zoom up switch 48, the horizontal zoom ON/OFF switch 49a and the vertical
zoom ON/OFF switch 49b are switches for zoom control, and particularly the
scale factor initialization switch 46 makes the scale factor coincident
with the preset value The horizontal zoom ON/OFF switch 49a and the
vertical zoom ON/OFF switch 49b are switches to make the zoom function
effective or ineffective in the vertical and horizontal directions
independently.
The status display unit 50 indicates status of the apparatus, and the
display content is as follows. Such display content is erased when the
power source is turned off.
ON . . . indicated at the power source switch turned on
READ . . . indicated at the input mode
WRITE . . . indicated at the edit output mode
READY . . . indicated at ready state of the apparatus
BUSY . . . indicated at uusy state of the apparatus
FULL . . . indicated at full state of data in the memory
LOW BATTERY . . . indicated at voltage decrease state of the incorporated
battery
The roll position display unit 52 indicates that image displayed on the
image display panel 53 is located to what position in the vertical length
as a whole.
The image display panel 53 comprises a graphic display unit to display a
part of the image data, and the center line 53a to indicate position of
the record head is displayed at the center as already described.
Typical use procedure of the apparatus will be described, and subsequently
the edit mode as the main point of the invention will be described in
detail.
First, the power source switch 41 of the apparatus is turned on, and the
mode switch 42 is pushed. Seeing the status display unit 50, "READ", i.e.,
the input mode is selected. Subsequently, the apparatus A is held on the
original document and the start/stop switch 43 is depressed, and then the
moving scanning is performed thereby the original document reading is
started. When scanning of the original document extends over plural lines
(plural times), the start/stop switch 43 is depressed at the end point of
each line and depressed again at the top of next line thereby the scanning
is repeated. When the all reading is finished, the mode switch 42 is
pushed so that "WRITE" is displayed on the display unit 50.
Thus the output.edit mode is selected. In this state, after necessary edit
work such as enlarge, reduce, shift or the like as hereinafter described
is finished, if the start/stop switch 43 is pushed, output mode is set. By
moving on the recording paper, printing is performed when the print timing
comes during the scanning.
When the printing is not performed, edit mode is automatically set thereby
the edit work can be performed. If the mode switch 42 is pushed in the
edit mode, mode selection can be performed. In this case, input mode can
be selected. Above-mentioned use procedure is shown in a flow chart of
FIG. 11.
Next, the edit function will be described in detail. FIG. 12 is a state
transition diagram of the edit mode. In this case, eight functions are
supported. These functions will be described.
(1) zoom function (enlarge, reduce)
For example, if the zoom up switch 48 is depressed, the horizontal and
vertical zoom ON/OFF switches 49a, 49b at ON state is performed by one
step in horizontal or vertical direction.
The enlarge method will be described. First, the display picture element
number of the image display panel 53 is made vertical M.times.horizontal
N. Next, the image data corresponding to one picture element of the image
display panel 53 is made vertical m.times.horizontal n dots This means
that the image data of m.times.n are projected in multiple projection on
one picture element of the display panel 53. In this embodiment, when
M=64, N=40, the picture element pitch=0.5 mm, the image data is set to
m=8, n=4 at the standard state In this case, 512.times.160 data dots are
displayed on the display panel 53 at the same time. In general,
(M.times.m).times.(N.times.n) data dots are displayed on the display panel
53.
When the zoom up is performed, m is decreased by one at ON state of the
vertical switch 49b, and n is decreased by one at ON state of the
horizontal switch 49a. Thereby the number of data dots with respect to one
display picture element is decreased. As a result, the display is
enlarged. Minimum value of m, n is made one, and value less than one is
not taken.
FIG. 13 is a flow chart regarding the zoom up. The zoom down can be
performed in similar manner. In this case, restriction of m and n becomes
m.ltoreq.(vertical dot number of input), n.ltoreq.(horizontal dot number
of input). FIG. 14 is a flow chart of the zoom down.
When the scale factor initialization switch 46 is depressed during the
above operation, m and n are returned to the preset value (m=8, n=4) and
initialized. The image display in the standard state can be obtained
easily.
The zoom function is important in moving type copying apparatuses Because,
since realization of the high density liquid crystal display having the
same picture element density as that which has been read is nearly
impossible in the present technical level, in order that one read picture
element corresponds to one displayed picture element, a very large display
panel will be required for the whole display. On the contrary, in a
display panel of suitable size (display panel having width nearly equal to
the reading width), only a small fraction of the image data can be
displayed.
When the edit work is performed, the image as a whole must be viewed and at
the same time details must be seen carefully. In order to perform this,
display of the whole image at high resolving power is the most suitable.
However, this is not practicable in the apparatus directed by the
embodiment because of the above-mentioned reason.
This problem can be solved by having the zoom function. That is, if the
scale factor of display is decreased, the image as a whole can be grasped
well. On the contrary, if the scale factor is increased, details of the
image can be seen at high accuracy as if they were seen through a
magnifier.
Of course, when enlarged, only a small fraction of the image can be
displayed as above described, but any part of the image can be seen by
means of roll up/down and image shift function as hereinafter described.
On the contrary, when the whole image is viewed in the reduce display,
accuracy of display with respect to the original image is deteriorated.
However, this corresponds to that when the image is seen from remote
position the image looks as if it passes through a spatial low pass
filter. Consequently, this is superior as intuitive man.machine interface.
(2) roll up/down function
For example, when the roll up switch 45a is pushed, the image on the
display panel 53 is shifted upward by one picture element of the display
panel 53, i.e., by m dots of the image data. FIG. 15 shows this relation.
In FIG. 15, numeral 53b designates one column (M picure elements) of the
image display panel 53, wherein b=a+m. If the roll up switch 45a continues
to be pushed, the image is shifted at high speed continuously. FIG. 16 is
a flow chart regarding the roll up. Similar relation applies to the roll
down, and FIG. 17 is a flow chart regarding the roll down.
The roll position display unit 52 is installed to indicate the present
display position. When the vertical dot number regarding one row of the
image data is made l, the roll position display unit 52 displays the
indicator 52a at position of ratio a/l from the top so as to indicate
position of the scroll window. This is rewritten together with the scroll
key input, and the most fresh position is indicated.
(3) image shift function
For example, if the shift switch 45c is pushed, data on the display panel
53 is shifted to the left by one picture element of the display panel 53,
i.e., by n dots of the image data. FIG. 18 shows this relation. In FIG.
18, numeral 53c designates one row of the image display panel 53, wherein
b=a+n. The image shift function is similar to the roll up/down function
regarding high speed operation. FIG. 19 is a flow chart regarding the
above operation. Similar relation applies also regarding the shift switch
45d. FIG. 20 is a flow chart regarding the right shift in this case.
The image shift function | | |
