Canon Kabushiki Kaisha

Eiji Komamiya

Masashi Hayashi

Kentaro Muro

Mitsutoshi Nagamura

Norihiro Kawatoko

Tetsuya Edamura

Yoshinori Nakajima

Akihiro Tomida

Shingo Nishioka

Hidehiko Kanda

Takeshi Yazawa

Junichi Nakagawa

Seiji Abe

Akihiro Kakinuma

Ayako Ohta

Hitoshi Nishikori

Daigoro Kanematsu

Yoshitomo Marumoto

Yutaka Kano

Yasunori Fujimoto

Satoshi Hayashi

Ayako Uji

Provided is a technique capable of obtaining a high-quality image without enhancing the arrangement accuracy of chips in a print head. In the print head, first and second chips respectively having first and second nozzle arrays are arranged. End regions of the first and second nozzle arrays form an overlapping portion (OL) where they overlap in view from a conveyance direction. An image processing apparatus allocates pieces of print data to the nozzles in the first and second nozzle arrays based on an inter-nozzle distance. At this time, the image processing apparatus performs a process of shifting allocation positions of the pieces of print data relative to the nozzles from the allocation positions in a state where the inter-nozzle distance is normal, and changes a distribution process of distributing the pieces of print data to the nozzles in the overlapping portion, according to the inter-nozzle distance.

Image processing apparatus, printing apparatus, image processing method, and storage medium

A print medium is conveyed in a first direction and a printing head prints an image on the print medium by using a printable region of the print head that extends in a second direction crossing the first direction. Storing units can feed multiple sorts of print media. Among the multiple sorts of the print media, the print medium to print a check pattern for checking a printing state of the printing head is selected as the print medium to be fed from the corresponding storing unit. The check pattern is printed on the print medium by using a portion of the printable region of the printing head corresponding to a size of the print medium fed from the storing unit.

Printing apparatus, printing method, and storage medium

The present disclosure provides a printing apparatus that is capable of obtaining accurately the amount of a waste liquid discharged from a printing unit. The printing apparatus includes a discharge unit that executes a discharge operation to discharge the liquid from the ejection port of the printing unit. The printing apparatus also includes a determination unit that determines filling states of the liquid in a printing apparatus main body and the printing unit and an obtaining unit that obtains, based on the filling states, a waste liquid amount discharged from the ejection port by the discharge operation.

Printing apparatus, method of controlling printing apparatus, and storage medium

A print medium is conveyed in a first direction and a print head is provided with a reference side nozzle array and a plurality of nonreference side nozzle arrays. A relative position displacement amount between a reference printing position of a reference pattern printed by the reference side nozzle array and a nonreference printing position of each of nonreference patterns printed by each of the nonreference side nozzle arrays is detected. Based on a maximum value of a displacement amount of the reference printing position with respect to each of the nonreference printing positions in a direction opposite to the first direction, a first correction value for correcting displacement of the reference printing position is calculated. With reference to the reference printing position after corrected based on the first correction value, a second correction value for correcting displacement is calculated for each of the nonreference printing positions.

Inkjet printing apparatus, inkjet printing method, and storage medium

A recording apparatus is provided for determining a relative moving speed between a recording head and a recording medium based on application amount information and power information corresponding to power for driving a heating element. In a case of the power amount in a first amount, the moving speed is determined as a first speed in a case where an application amount is equal to a predetermined amount, and the moving speed is determined as a speed higher than the first speed in a case where the application amount is smaller than the predetermined amount. In a case of the power amount in a second amount smaller than the first amount, the moving speed is determined as a speed higher than the first speed in a case where the application amount is equal to the predetermined amount.

Recording apparatus and recording method

A print head capable of forming dots on a print medium based on print data and a print medium are caused to perform relative movement in a specified direction, and a speed of the relative movement is set according to the number of dots to be formed in an area of a specified size. Whether to set the speed of the relative movement to a first speed is determined according to the number of dots to be formed in an area of a first size on the print medium. Whether to set the speed of the relative movement to a second speed lower than the first speed is determined according to the number of dots to be formed in an area of a second size which is smaller than the area of the first size in the specified direction.

A recording apparatus includes a recording head, a circulation channel, a concentration acquisition unit, an adjustment unit, and a control unit. The recording head includes a plurality of discharge ports through which ink is discharged and a pressure chamber being in communication with the plurality of discharge ports. The circulation channel is in communication with the pressure chamber to circulate the ink between the pressure chamber and an external portion thereof such that the ink is supplied to and collected from the pressure chamber. The concentration acquisition unit is configured to acquire concentration information about an ink concentration in the circulation channel. The adjustment unit is configured to adjust a timing to discharge the ink based on the concentration information. The control unit is configured to control a recording operation of recording by discharging the ink from the recording head such that the ink is discharged at the adjusted timing.

An apparatus includes a recording head including a first discharge port array and a second discharge port array, the first and second discharge port arrays being shifted and arranged in a first direction so that part of the discharge ports arranged at an end portion of the first discharge port array in the first direction and part of the discharge ports arranged at an end potion of the second discharge port array in the first direction are located at the same positions in the first direction. The plurality of discharge ports in each of the first and second discharge port arrays is obliquely arranged at a predetermined tilt with respect to the first direction. Discharge timing is adjusted based on the tilt of the discharge port arrays.

A recording apparatus includes a recording head including a plurality of ink discharge ports arranged in a predetermined direction, and a complementing unit configured to, according to discharge defect information identifying a defective discharge port at which a discharge defect has occurred among the plurality of ink discharge ports, determine to cause provision of complementary ink to be conducted from a different discharge port configured to discharge the ink at a different position from the identified defective discharge port, wherein the complementing unit determines to use a discharge port configured to provide the ink at a position on one side that is one of positions adjacent in the predetermined direction to a position at which the at least one discharge port provides the ink as the different discharge port for the discharge port identified as the defective discharge port.

According to an embodiment of the present disclosure, there is provided a recording apparatus, wherein a quantization pattern is applied to a unit area in an end part area located at a boundary with a central area while being offset so as to correspond to an end part of the quantization pattern.

With respect to an area quantized by using an area of part in a quantization pattern and also without using an area of the other part in the quantization pattern in quantized data, a mask pattern part corresponding to the area of the part among mask pattern parts constituted by dividing a mask pattern is applied.

Image processing apparatus and image processing method

When ink is discharged more than once to one pixel area, the ink is discharged without focusing on specific scans among a plurality of scans if the attribute in an image is a first attribute, and the ink is discharged intensively in specific scans among the plurality of scans if the attribute in the image is a second attribute.

A data processing apparatus, a data processing method and an inkjet printing apparatus are offered that are capable of reducing, in any kind of image, the occurrence of color unevenness while achieving a high speed output via a bi-directional printing. In order to achieve this, forward scan print ratio and backward scan print ratio with respect to a predetermined area comprising a plurality of pixels is set based on multi-value image data of the predetermined area. Next, binary print data for the forward scans and binary print data for the backward scans at the predetermined area is generated based on the multi-value image data and the set print ratios. According to such a configuration it is possible to increase the ratio of bi-directional printing with respect to areas at which color unevenness appears with difficulty, and increase the ratio of one-directional printing at areas where color unevenness appears with ease.

Data processing apparatus, data processing method and inkjet printing apparatus

Even if colors are printed in the same order for each band, time difference unevenness is suppressed which results from a difference in duration from the end of the first scan until the beginning of the second scan. An ink jet printing apparatus completely prints a scan area with a width corresponding to a predetermined length of a nozzle line. The ink jet printing apparatus includes conveying means for moving the print medium, generation means for generating print data in such a manner that in the two scans for completely printing the scan area with the width corresponding to the predetermined length, a print duty for the first scan is higher than a print duty for the second scan, and print control means for carrying out the first scan in an identical direction for all the scan areas completely printed by the two scans.

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Kawasaki, Japan

Eiji Komamiya