公开(公告)号：US20240278556A1

公开(公告)日：2024-08-22

申请号：US18440031

申请日：2024-02-13

Applicant: CANON KABUSHIKI KAISHA

Inventor： NAOKO BABA ,  TAKAYOSHI KIKUCHI ,  YOSHIYUKI HONDA ,  DAISUKE YOSHITOKU ,  HIROSHI KAWAFUJI ,  SHUNSUKE KAKEI ,  AKIHIRO MOURI

IPC: B41J2/045 ,  B41J2/45

CPC classification number: B41J2/04573 ,  B41J2/04593 ,  B41J2002/453

Abstract: A printing apparatus controls an ejection timing of a printing unit such that a first distance becomes shorter than a second distance, where the first and second distances are distances in a scanning direction between a landing position at which an ink droplet lands on a printing medium in a case where the printing unit scans in a first direction and a landing position at which an ink droplet lands on the printing medium in a case where the printing unit scans in a second direction in first and second printing modes, respectively.

公开(公告)号：US20250117609A1

公开(公告)日：2025-04-10

申请号：US18904665

申请日：2024-10-02

Applicant: CANON KABUSHIKI KAISHA

Inventor： YUKI MORITA ,  SATOSHI WADA ,  SHINGO NISHIOKA ,  AYUMI YASUDA ,  NAOKO BABA ,  TAKUMI OTANI

IPC: G06K15/10 ,  G06K15/02

Abstract: A printing apparatus operable to form dots on a printing medium by repeating a forward scan and a backward scan comprises a generation unit configured to generate first data of a dot pattern to be formed in a forward scan and second data of a dot pattern to be formed in a backward scan. The generation unit generates the first data and the second data such that the dot pattern to be formed in the forward scan and the dot pattern to be formed in the backward scan have either a blue noise characteristic or a green noise characteristic as a spatial frequency characteristic, and the number of dots to be formed in the forward scan and the number of dots to be formed in the backward scan are substantially the same.

公开(公告)号：US20250108653A1

公开(公告)日：2025-04-03

申请号：US18904670

申请日：2024-10-02

Applicant: CANON KABUSHIKI KAISHA

Inventor： TAKESHI YAZAWA ,  SATOSHI WADA ,  NAOKO BABA ,  JUMPEI JOGO ,  SHINGO NISHIOKA ,  KEIJI KURIYAMA ,  SERENA SAITO

IPC: B41J29/393 ,  H04N1/00

Abstract: One embodiment is a printing apparatus comprising: a conveyance unit configured to convey a printing medium in a conveyance direction; and a printing head configured to eject a liquid, and being capable of conducting a maintenance control on the printing head while temporarily pausing a printing operation and configured to execute tiled printing of printing an image in which a plurality of printed products obtained by printing are assumed to be arranged adjacent to each other, while dividing the image into a plurality of pages including at least a first page and a second page, wherein the printing apparatus is configured to control whether or not to conduct the maintenance control based on a conveyance-direction distance from a top of the page along the conveyance direction for the page during printing in a case of executing the tiled printing and printing each of the plurality of pages.

公开(公告)号：US20240330632A1

公开(公告)日：2024-10-03

申请号：US18620860

申请日：2024-03-28

Applicant: CANON KABUSHIKI KAISHA

Inventor： NAOKO BABA ,  YUKI OMAGARI ,  SEIJI ABE ,  DAISUKE YOSHITOKU

IPC: G06K15/02

CPC classification number: G06K15/1878 ,  G06K15/027 ,  G06K2215/101

Abstract: In an image processing apparatus, in a case where an input recording mode is a first recording mode and a density characteristic value for a patch pattern in an input gradation value greater than or equal to a predetermined gradation is higher than the target density value associated with an input gradation value, in correction processing, a correction value for an input gradation value greater than or equal to the predetermined gradation is not 0, in a case where the input recording mode is a second recording mode and a density characteristic value for a patch pattern in an input gradation value greater than or equal to the predetermined gradation is higher than the target density value associated with an input gradation value, in the correction processing, a correction value for an input gradation value greater than or equal to the predetermined gradation is 0.

公开(公告)号：US20250162327A1

公开(公告)日：2025-05-22

申请号：US18949034

申请日：2024-11-15

Applicant: CANON KABUSHIKI KAISHA

Inventor： HIROSHI KAWAFUJI ,  TAKAYOSHI KIKUCHI ,  DAISUKE YOSHITOKU ,  SHUNSUKE KAKEI ,  NAOKO BABA ,  YOSHIYUKI HONDA ,  AKIHIRO MOURI ,  SATOSHI AZUMA

IPC: B41J2/505 ,  B41J2/51 ,  B41J3/01 ,  G06K15/10

Abstract: An image processing apparatus for correcting image data used to print an image on a print medium by discharging ink from a plurality of nozzles provided in a printhead in scanning in each of a first direction included in a scanning direction crossing a conveyance direction of the print medium and a second direction different from the first direction, comprising a correction unit configured to perform correction for, in the image data, image data to be printed by scanning in the first direction in accordance with a degree of condensing of the ink in the nozzles such that a density change caused by the condensing is relaxed, and perform, for image data to be printed by scanning in the second direction in the image data, correction different from the correction for the image data to be printed by the scanning in the first direction.

公开(公告)号：US20240198676A1

公开(公告)日：2024-06-20

申请号：US18538324

申请日：2023-12-13

Applicant: CANON KABUSHIKI KAISHA

Inventor： SHINGO NISHIOKA ,  TAKAYOSHI KIKUCHI ,  HAJIME NAGAI ,  SHIN GENTA ,  AYUMI YASUDA ,  KEIJI KURIYAMA ,  SERENA YOSHIKAWA ,  SATOSHI WADA ,  FUMIHIRO GOTO ,  DAISUKE YOSHITOKU ,  NAOKO BABA ,  HIROSHI KAWAFUJI ,  YOSHIYUKI HONDA ,  AKIHIRO MOURI ,  SHUNSUKE KAKEI

IPC: B41J2/15 ,  B41J2/21 ,  B41J3/62

CPC classification number: B41J2/15 ,  B41J2/21 ,  B41J3/62

Abstract: A printing apparatus includes a printing-medium conveyance unit, a printhead, and a control unit. The printhead has a first array of ejection ports ejecting a first ink and a second array of ejection ports ejecting a second ink, with the ports arranged in a printing-medium conveyance direction and the arrays arranged in a predetermined direction intersecting the conveyance direction. The control unit performs control to print an image of a foundation layer and images in stack and non-stack regions on the printing medium by having the conveyance unit convey the printing medium while scanning the printhead. The control unit performs control so that in printing in the non-stack region, the image of the foundation layer is printed using an ejection-port group in the first array at the same position as an ejection-port group in the second array for printing the image in the non-stack region, in an ejection-port arrangement direction.

公开(公告)号：US20130249980A1

公开(公告)日：2013-09-26

申请号：US13837014

申请日：2013-03-15

Applicant: CANON KABUSHIKI KAISHA

Inventor： MITSUTOSHI NAGAMURA ,  AKIHIRO KAKINUMA ,  DAIGORO KANEMATSU ,  NAOKO BABA ,  ASAKO TOMIDA ,  AKIHIRO TOMIDA

IPC: B41J2/07

CPC classification number: B41J2/07 ,  B41J25/308 ,  B41J29/38

Abstract: The optimal number of print passes and a head-to-platen distance are set according to a content of an image to be printed and the user's request (emphasis is put on quality or speed, etc.) to thereby appropriately meet the needs for higher image quality and higher productivity and to perform printing with high reliability. To this end, it is made possible to select whether to execute processing for issuing an instruction to set the number of print passes and the head-to-platen distance according to discrimination of the content of the image. When the execution of the processing is selected, the number of print passes and the head-to-platen distance are appropriately set according to the content of the image (duty, etc.). Meanwhile, when it is not selected, the image is printed by one-pass print with the head-to-platen distance set larger, regardless of the content of the image.