A printer for printing on a medium on an endless belt by printer heads includes: a generator generating printing data for each printer head; a detector detecting time-series data for the meandering of the medium; a generator generating correction data preventing disorder of a printed image due to the meandering; and a controller operating each printer head according to the correction and printing data, wherein the correction-data generator selects a specific difference between factors in the tim...

A printer with a peeler mechanism 1 for peeling labels from a web, the printer having a movable web pressure roller 24 which may be moved from a web pressure position 24A in which pressure is applied to a platen roller 20 to a retracted position 24B in which pressure is not applied. The printer also has a photosensor 21 and photoreceptor having an emitter/receptor surface 21a for detecting the presence and absence of labels peeled from the web. A window 22b in the label guide surface 22a becomes...

A printer for printing a pattern, design, etc. on fabric comprises a vertical driving unit and a fabric thickness detecting mechanism. The vertical driving unit moves a printing unit including a print head in the vertical direction to let the print head move toward and away from the fabric held by a fabric holding frame. The fabric thickness detecting mechanism includes an idle roller which is attached to the printing unit to be on the preceding side of the printing unit in the printing directio...

A printer for printing on a medium on an endless belt by printer heads includes: a generator generating printing data for each printer head; a detector detecting time-series data for the meandering of the medium; a generator generating correction data preventing disorder of a printed image due to the meandering; and a controller operating each printer head according to the correction and printing data, wherein the correction-data generator selects a specific difference between factors in the tim...

When the number of sheets that have been printed has reached the number of sheets guaranteed for printing, a number representing a upper limit of the number of sheets that can be printed, an ink jet printer declines to perform printing with an ink cartridge for which the number of sheets guaranteed for printing has been set, but when the number of sheets printed has not reached the number of sheets guaranteed for printing, performs printing of an image onto a recording sheet S by using the ink c...

A printer includes a first transporting belt that transports a print medium and a second transporting belt that receives the print medium from the first transporting belt and further transports the print medium. A liquid ejection head ejects liquid according to a liquid-ejection timing signal to the print medium transported by the first transporting belt and the second transporting belt. A signal generator outputs the liquid-ejection timing signal according to a first signal and a second signal ...

A printer ejects ink droplets continuously onto the left edge of an endless belt while the endless belt is rotating, stops the endless belt, detects the positions of the ink droplets on the endless belt, and thereby detects meandering of printing paper (Step S102). This makes it possible to prevent distortion of printed images caused by meandering of the printing paper based on the detected meandering, allowing information to be printed on an entire printing surface of the printing paper unlike,...

After a voltage of opposite polarity is applied between electrodes of liquid crystal shutters for each of an odd number of colored lights emitted cyclically, a dummy operation of the liquid crystals is performed during a wait period until a next write command pulse is received. During the dummy operation, LEDs which emit the colored lights are kept off. Delays in response of the liquid crystals are reduced by driving the liquid crystals continuously, and molecular arrangement in the liquid cryst...

A printer includes a full-line type printhead which can correct variations in the ink discharge amounts from the respective nozzles, and density unevenness of a printed image due to variations in the operations of many driving circuits in the printhead and changes in the internal temperature or a temperature gradient of the printhead, and can obtain a high-quality printed image without density unevenness in consideration of the print conditions and changes in operation environmental temperature....

High speed printing apparatus used as output units of computers or the like is disclosed. The apparatus includes a print head, a driving means for moving the head and feeding a record medium and means for applying a driving control signal to the driving means. Only one driving means is advantageously available for accomplishing all operations of the apparatus so that simple construction thereof may be obtained.