In order to solve a problem that the skew width of a clock when data is transmitted to printheads changes depending on the characteristics of and variations in the respective printheads integrated in a printing apparatus or the operation mode of the printing apparatus, in embodiments of the present invention, clock skew is adjusted based on a detection result by an error detection circuit integrated in each printhead when the data is transmitted to the printhead. This makes it possible to adjust skew in accordance with the characteristics of the respective printheads or a status change at the time of a printing operation.

The present disclosure discloses a page wide array (PWA) printer (20) particularly but not exclusively for performing print jobs while maximizing print bar performance uniformity within the printer. The PWA printer includes a print bar which can be moved laterally and a controller which causes the print bar to laterally move from a first to a second position and causes the nozzles within the print bar to print an image while the print bar is in the second position without modifying the lateral alignment of the image.

When discharge timing of a first head module and a second head module, adjacent to each other, is adjusted in a recording head in which a plurality of head modules each having s nozzle array in which a plurality of nozzles is arranged in different positions in a first direction is joined in a second direction intersecting with the first direction, the discharge timing is adjusted so that a complementary region recording shift amount being a recording shift amount in the first direction in a complementary region in a joined portion between the first head module and the second head module becomes a value between a first non-complementary region recording shift amount and a second non-complementary region recording shift amount that are recording shift amounts in the first direction in respective non-complementary regions in the first head module and the second head module.

A printing system includes an identification module to identify a number of the encoder pulses generated by an encoder at a rate corresponding to a speed of a media during a time interval. The printing system also includes an alignment module to at least one of change the number of encoder pulses or scale the encoder pulses generated by the encoder based on an amount of variation between the number of encoder pulses detected and the number of encoder pulses to maintain the number of encoder pulses constant.

A printhead die assembly includes first and second printhead die. Each of the first and second die has a respective first surface including ink dispensing devices constructed thereon, and a respective second surface opposite the first surface. Each of the first and second die includes nozzles for the ink dispensing devices. The first and second die are positioned so that the second surface of the first die faces the second surface of the second die, and the nozzles of the first die are aligned with the nozzles of the second die.

A printing system capable of accurately positioning a lenticular array in registration with a rectilinear raster includes a printer that is capable of printing onto a printable surface. The printer has a main support surface on which the printable surface rests. The system further includes a series of raised parallel relief features being spatially formed along a printable substrate that is supported by the main support surface. The raised parallel relief features are raised to a sufficient height above the printable substrate such that when the lenticular array is disposed upon the raised parallel relief features, each raised parallel relief feature fits and is disposed within a valley formed between two respective adjoining lenticules of the lenticular array.

A controller determines the amount of driving by a sub-scanning driver and the number of nozzles to be used in accordance with a maximum amplitude of vibration of an inkjet head in a sub-scanning direction, where the maximum amplitude is detected by a displacement detecting sensor when the inkjet head is moved in the sub-scanning direction before starting printing. Then, while moving the inkjet head in a main-scanning direction, the controller performs printing by selecting nozzles to be used in accordance with displacement of the inkjet head in the sub-scanning direction detected by the displacement detecting sensor.

An image forming apparatus, in which a method of correcting a positional deviation of a sheet is performed, includes a detecting device to detect a position of the sheet, a pair of sheet conveying bodies to convey the sheet and correct the positional deviation of the sheet, an image forming device to form an image on the sheet, and circuitry to calculate a first positional deviation amount of the sheet based on a first detection result of the detecting device, cause the pair of sheet conveying bodies to correct the positional deviation of the sheet based on the first positional deviation amount, calculate a second positional deviation amount of the sheet based on a second detection result of the detecting device, and cause the image forming device to correct the positional deviation of an image forming position on the sheet based on the second positional deviation amount.

A conveyed object detection apparatus includes an optical sensor configured to receive light reflected by a conveyed object; a detection unit configured to use the optical sensor to acquire a detection result indicating a position, a moving speed, or a moved amount of the conveyed object in at least one of a conveyance direction in which the conveyed object is conveyed and a direction perpendicular to the conveyance direction, or a combination of the position, the moving speed, and the moved amount; and a setting unit configured to set an aperture value and an exposure time concerning the optical sensor based on the detection result.

A liquid discharge apparatus has a head provided with discharge sections which discharge a liquid, a drive circuit configured to generate driving signals for driving the discharge sections and discharging the liquid, a carriage mounted with the head and the drive circuit, and a carriage support section configured and arranged to support the carriage. A shortest distance between the carriage support section and the drive circuit is shorter than a shortest distance between the carriage support section and the discharge section which is closest to the carriage support section.