An image is formed on a recording medium by illuminating a multitude of points on the surface of the recording medium to form lines of image points. Relative movement is effected between the recording medium and a plurality of light-emitting diodes. The light-emitting diodes are arranged in a plurality of rows. Each row extends parallel to the direction in which a line of image points to be formed upon the recording medium extends. The rows are arranged successively in the direction of relative ...

An image recording member in which a pair of conductive members are disposed in a photoconductive member contiguous with a support member. Each of the conductive members has an insulating coating thereon for electrical isolation thereof. An electrical potential is applied to one of the conductive members for creating a potential difference between the pair of conductive members. This forms an electrical field through the photoconductive member.

A recording sheet comprising a support having thereon a color developer layer containing (1) a metal compound of an aromatic carboxylic acid and (2) at least one of gelatin or a gelatin derivative, the metal compound of an aromatic carboxylic acid being capable of forming a colored image when reacted with a color former.

A recording sheet, especially useful for measuring pressures of 1 to 2,000 kg/cm.sup.2 with a high degree of accuracy, comprising a support, a recording layer thereon, and a protective layer of a transparent synthetic resin provided on top of the recording layer by extrusion coating, the recording layer containing microcapsules having a .delta./D ratio (as defined in the specification hereof) of about 1.5 .times. 10.sup.-3 to about 2.5 .times. 10.sup.-1.

Magnetic recording media including permanent structures of aligned acicular particles have been proposed as a means of identifying and authenticating a medium. A structure which has an improved remanence difference signal is described. A method of making and examining such a structure is described. Arrangements of such media and record / read-out apparatus by which information can be recorded and read-out without interference from the structural remanence differences are described. The use of th...

A recording apparatus includes a plurality of Xenon flash tubes and a separate enclosure for each of said flash tubes. Each enclosure is provided with a slit through which light from the associated flash tube emerges to form a relatively small line segment. The slits are all located in a recording plane and may be disposed in an H-shaped or C-shaped recording array, as desired. When placed in cooperative relation with a moving light sensitive recording medium that is ultrasensitive to a predomin...

An electronic voting machine includes a number of terminals to facilitate accommodating virtually any ballot with nearly the minimum amount of apparatus for the particular ballot. A display lists the candidates for each office beside an identifying tag. A poll worker actuates a switch which enables the apparatus to receive vote selection indicated on a keyboard by the voter. The voter operates a switch to identify the office or issue being voted and then enters his choice on a keyboard to cause ...

A recording sheet comprising a support having thereon a color developer layer capable of reacting with a color former to form color images, said color developer layer containing (1) a metal compound of an aromatic carboxylic acid and (2) at least one member selected from the group consisting of ethers and alcohols.

A recording device for rectilinear recording on a circular chart in a programmed time sequence at different speeds. In the preferred embodiment, the recording device provides circular chart recording of blood coagulation, lysis and aggregation. A time base is printed circumferentially on each circular chart to permit a direct readout of time. Amplitude is read directly from the chart in terms of radial distance.

This invention provides a novel recording sheet having improved developing ability and resistance to light irradiation and which can be produced easily and economically. A developer layer coated on a support of the recording sheet contains a reacted compound between an alkali metal salt of a phenol resin and a water soluble metallic compound.