摘要:
On performing a predetermined printing operation, whether or not, among a plurality of printing elements, only a part of the printing elements are applied is detected. If it is judged that only the part of the printing elements are used, a judgment is made whether or not the preliminary discharge operation is performed based on the number of discharges for the part of the printing elements, and if it is not judged that only the part of the printing elements are used, a judgment is made whether or not the preliminary discharge operation is performed based on the number of discharges for all of the printing elements of the printing head. This eliminates an unnecessary preliminary discharge for non-printing elements even in a printing operation mode in which only a part of the printing elements are applied.
摘要:
In a liquid droplet ejection apparatus, a plurality of color-dependent function liquid droplet ejection heads are arranged such that a plurality of color-dependent partial imaging lines, each formed by a plurality of ejection nozzles, are formed so as to continuously make up a single imaging line in the Y-axis direction. An imaging process is performed by repeating a main scanning operation for driving each function liquid droplet ejection head in synchronization with moving of the substrate in the X-axis direction, and a sub-scanning operation for moving the function liquid droplet ejection heads through a carriage unit in the Y-axis direction by a length of a partial imaging line.
摘要:
An inkjet printing apparatus uses a printing head including a plurality of nozzle arrays each including a plurality of nozzles arrayed in a first direction, the nozzle arrays being arranged in a second direction. A compensating unit compensates for an ejection failure of a defective nozzle by causing a compensating nozzle to eject ink to a predetermined pixel area in a case where the print data corresponding to the defective nozzle indicates ink ejection to the predetermined pixel area. The compensating unit determines the compensating nozzle such that the compensating nozzle satisfies both a first condition that the compensating nozzle is not a defective nozzle and a second condition that the print data indicates that nozzles belonging to the nozzle array including the compensating nozzle do not eject ink to a pixel area corresponding to N pixels (N is a positive integer) around the predetermined pixel area in the first direction.
摘要:
A recording apparatus includes: a recording head having a recording element row in which multiple recording elements are disposed, with recording elements at dispersed positions in the recording element rows as blocks; a scanning unit configured to scan the recording head in a main scanning direction; a time-division driving unit configured to drive the recording elements in increments of blocks; a storing unit configured to store recording data; an obtaining unit configured to obtain information relating to the inclination of the recording element row relative to the main scanning direction; and a changing unit operable to change, in increments of individual recording elements, the storage position in the main scanning direction of recording data stored in the storing unit that is to be provided to recording elements of a group, which is configured of consecutive recording elements in each block in the recording element row, based on the obtained information.
摘要:
When an image is recorded using a multichip recording head including a plurality of chips each having a plurality of nozzle arrays, a change in image density can occur due to a registration error between chips in an overlapping part where two chips are connected. To suppress the change in image density, input image data is distributed to two chips such that there are dots overlapping each other between the two chips in the overlapping part.
摘要:
The present invention provides a recording apparatus including recording heads each including a plurality of nozzle arrays that are arranged so as to overlap, wherein the width with which the overlapping portions of the recording heads for colors that are simultaneously used with a relatively high frequency overlap in an intersecting direction that intersects an array direction of nozzles is smaller than the width with which the overlapping portions of the recording heads for colors that are simultaneously used with a relatively low frequency overlap in the intersecting direction.
摘要:
An inkjet recording apparatus includes a recording head configured to discharge ink, a first ink tank configured to store ink to be supplied to the recording head, a circulation path configured to circulate ink between the first ink tank and the recording head, a measurement unit configured to measure an ink temperature in the circulation path, a second ink tank configured to replenish ink to the circulation path, and a control unit configured to control replenishment of ink from the second ink tank to the circulation path based on the ink temperature measured by the measurement unit.
摘要:
A recording apparatus includes: a recording head having a recording element row in which multiple recording elements are disposed, with recording elements at dispersed positions in the recording element rows as blocks; a scanning unit configured to scan the recording head in a main scanning direction; a time-division driving unit configured to drive the recording elements in increments of blocks; a storing unit configured to store recording data; an obtaining unit configured to obtain information relating to the inclination of the recording element row relative to the main scanning direction; and a changing unit operable to change, in increments of individual recording elements, the storage position in the main scanning direction of recording data stored in the storing unit that is to be provided to recording elements of a group, which is configured of consecutive recording elements in each block in the recording element row, based on the obtained information.
摘要:
To enable the printing in which it is difficult for the dot to stand out and it is difficult for the gradation sequence properties to be degraded. Therefore, among plural dots each having a different size, the binary processing is carried out by using the same first dot arrangement pattern in regard to the large and medium-sized dots and the binary processing is carried out by using a dot arrangement pattern different from the first dot arrangement pattern in regard to the small-sized dots.
摘要:
A printing apparatus conducts inspection associated with printing by changing a relative positional relationship between a line print head and a sheet feeding position for a sheet in a direction perpendicular to a direction in which the sheet is fed, forming an image on the sheet using the line print head a plurality of times, and reading the formed images using a reading unit.