公开(公告)号：EP0803360A3

公开(公告)日：1998-08-12

申请号：EP97302734

申请日：1997-04-22

Applicant: CANON KK

Inventor： OHTSUKA NAOJI ,  YANO KENTARO ,  TAKAHASHI KIICHIRO ,  NISHIKORI HITOSHI ,  IWASAKI OSAMU ,  KANEMATSU DAIGORO ,  KANDA HIDEHIKO

IPC: B41J2/05 ,  B41J2/175 ,  G06K15/10 ,  H04N1/40 ,  B41J2/205

CPC classification number: B41J2/17553 ,  B41J2/04553 ,  B41J2/04563 ,  B41J2/0458 ,  B41J2/1752 ,  G06K15/107 ,  H04N1/40025

Abstract: It is checked whether an ink used in a print head has a high density. The type of a printing medium used for a print operation is also identified. An image is printed by scanning the print head once or a plurality of numbers of times. When a print operation is to be performed by using a thick ink, an image is printed by using mask data and the driving frequency of the head which are set for the thick ink. When a print operation is to be performed by using a thin ink, an image is printed by using mask data and the driving frequency of the head which are set for the thin ink and the type of printing medium used for the print operation. Codes of the respective color data of print data are determined in accordance with the types of inks used for a print operation, and an image is printed by printing a plurality of dots or dots in an overlapping state by the multi-pass method.

Abstract translation: 检查打印头中使用的墨水是否具有高密度。 还识别用于打印操作的打印介质的类型。 通过扫描打印头一次或多次打印图像。 当通过使用浓墨水进行打印操作时，通过使用为厚油墨设定的掩模数据和头部的驱动频率来打印图像。 当通过使用薄墨水进行打印操作时，通过使用用于薄墨水的打印头数据和头部的驱动频率以及用于打印操作的打印介质的类型来打印图像。 打印数据的各个颜色数据的代码根据用于打印操作的油墨的类型来确定，并且通过多遍方法以重叠状态打印多个点或点来打印图像。

公开(公告)号：EP1864722A4

公开(公告)日：2008-05-14

申请号：EP06782699

申请日：2006-08-11

Applicant: CANON KK

Inventor： MASUYAMA ATSUHIKO ,  IWASAKI OSAMU ,  NAKAGAWA YOSHINORI ,  OSHIO NAOMI

IPC: B05C11/10 ,  B05C1/02 ,  B41J2/01 ,  B41J2/175

CPC classification number: B41J2/175 ,  B41J2/17509 ,  B41J29/38

Abstract: A liquid coater in which the amount of a liquid to be applied to a liquid-receiving medium is regulated. Specifically, before a pump is operated, a circulation rate determination processing (S3) is conducted. According to the rate determined, the rate of a circulation flow generating in a liquid-retention space in a pump operation step (S4) is regulated. The internal pressure of the liquid-retention space is thus regulated. As a result, that part of a contact member of a liquid-retention member which is in contact with a coating roller changes in the flow of a coating fluid, whereby the amount of the coating fluid which adheres to the coating roller and is released from the contact member is regulated. Consequently, the amount of the coating fluid to be transferred (applied) to the liquid-receiving medium can be regulated.

公开(公告)号：EP1120269A8

公开(公告)日：2001-11-14

申请号：EP01101720

申请日：2001-01-25

Applicant: CANON KK

Inventor： OTSUKA NAOJI ,  NISHIKORI HITOSHI ,  IWASAKI OSAMU ,  CHIKUMA TOSHIYUKI

IPC: B41J2/205 ,  B41J2/21 ,  B41J19/14 ,  B41J19/18

CPC classification number: B41J2/2132 ,  B41J2/2125 ,  B41J19/147

Abstract: A printing apparatus for forming a color image by applying different color inks to a printing material while bi-directionally moving the recording head to scan the recording material, the apparatus includes changing means for changing an order of applications of the inks of different colors to be applied at least at one amount for printing a secondary color to a secondary color pixel area; and forming means for forming the secondary color while making the order of applications of the inks to at least one of a plurality of the secondary color pixel areas arranged along a predetermined direction different from the order of another, by the changing means.

公开(公告)号：EP0804018A3

公开(公告)日：1998-08-19

申请号：EP97302735

申请日：1997-04-22

Applicant: CANON KK

Inventor： OHTSUKA NAOJI ,  TAKAHASHI KIICHIRO ,  IWASAKI OSAMU ,  YANO KENTARO ,  NISHIKORI HITOSHI ,  KANEMATSU DAIGORO ,  KANDA HIDEHIKO

IPC: B41J2/21 ,  B41J2/045 ,  B41J2/175 ,  G06F3/12 ,  G09G5/00 ,  G09G5/02 ,  H04N1/23 ,  H04N1/46

CPC classification number: B41J2/04551 ,  B41J2/0458 ,  B41J2/17543 ,  B41J2/17546 ,  H04N1/46

Abstract: A user interface for high-quality image output and an image processing apparatus utilizing the user interface which performs apparatus setting for appropriate printing by selecting a print medium and a print mode in accordance with the type of ink cartridge. When an exchangeable ink cartridge, containing YMCK color ink or ink having different ink densities from those of the YMCK color ink in approximately the same color hues, is attached to a printer, the type of the ink cartridge is discriminated by an ink cartridge ID, and available print media and appropriate output image types are displayed for user's selection based on the ID. Then print operation is set in accordance with instruction by the user.

公开(公告)号：EP0803367A3

公开(公告)日：1998-08-12

申请号：EP97302736

申请日：1997-04-22

Applicant: CANON KK

Inventor： TAKAHASHI KIICHIRO ,  OHTSUKA NAOJI ,  NISHIKORI HITOSHI ,  IWASAKI OSAMU

IPC: B41J2/01 ,  B41J2/175 ,  B41J2/205 ,  B41J2/21 ,  B41J2/52 ,  B41J19/14 ,  G06K15/10 ,  H04N1/405

CPC classification number: G06K15/102 ,  B41J2/2132 ,  B41J19/142 ,  G06K2215/0094

Abstract: The present invention is to achieve formation of a 2
n -value image with data of n bits, thereby reducing the amount of image information to be transferred and processed, while improving the tonal rendition, thereby realizing high-quality recording system in the dot matrix recording suitable for personal use. For this purpose there is disclosed an ink jet recording apparatus and a method therefor, comprising an image process unit for generating multi-value information, an identification unit for identifying that the image data are multi-value information, an identification unit for the recording head, and an analysis unit for decoding the n-bit information, and featured by effecting multi-value recording while processing the n-bit data as multi-value information.

Abstract translation: 本发明是为了形成具有n位数据的2n值图像，从而减少了要传送和处理的图像信息量，同时改进了音调再现，从而实现了高质量的记录系统 点阵记录适合个人使用。 为此，公开了一种喷墨记录装置及其方法，包括用于产生多值信息的图像处理单元，用于识别图像数据是多值信息的识别单元，用于记录头的识别单元 以及用于对n位信息进行解码的分析单元，其特征在于在将n位数据作为多值信息进行处理时进行多值记录。

公开(公告)号：DE60224859T2

公开(公告)日：2009-01-22

申请号：DE60224859

申请日：2002-04-29

Applicant: CANON KK

Inventor： TESHIGAWARA MINORU ,  OTSUKA NAOJI ,  TAKAHASHI KIICHIRO ,  IWASAKI OSAMU

IPC: B41J2/01 ,  B41J19/14

Abstract: A print apparatus that, without significantly reducing an overall printing speed, allows a reduction in uneven densities due to the discharge time difference between black ink and color inks, which occur particularly at both ends in a scanning range and which are caused by the printing by bidirectional scanning of print heads, and enables high image-quality printing to be realized. In this print apparatus, one band is divided into plural areas in a main scanning direction, the dot numbers of black ink and color ink imparted to respective areas are counted. If there are any areas where the dot numbers of both black and color exceed respective threshold values, the area number is counted, and if the number exceeds a predetermined number, the print mode is switched from bidirectional printing to a unidirectional one, upon determining that there is a high probability of occurrence of the above-described uneven densities.

公开(公告)号：DE60228902D1

公开(公告)日：2008-10-30

申请号：DE60228902

申请日：2002-01-30

Applicant: CANON KK

Inventor： TESHIGAWARA MINORU ,  OTSUKA NAOJI ,  SUGIMOTO HITOSHI ,  TAKAHASHI KIICHIRO ,  NISHIKORI HITOSHI ,  IWASAKI OSAMU ,  YAZAWA TAKESHI ,  CHIKUMA TOSHIYUKI

IPC: B41J2/21

Abstract: A printing apparatus can reduce degradation in print quality of a printed image, notably in a highlight portion or an intermediate gradation portion in the case where the image is printed by forming dots of a plurality of sizes. Specifically, data (C) and (SC) causing larger and smaller cyan ink droplets, respectively, to be ejected are independently subjected to a conversion to n-value process. Thus, the data (C) for larger ink droplets is present in a portion of printing data (128 or more) which corresponds to the highlight portion or intermediate gradation portion of the image. During printing, larger dots are formed in this area, thereby making it difficult to perceive possible stripes caused by the offset of the positions at which smaller dots impact a sheet.

公开(公告)号：DE60323313D1

公开(公告)日：2008-10-16

申请号：DE60323313

申请日：2003-10-02

Applicant: CANON KK

Inventor： TAKAHASHI KIICHIRO ,  IWASAKI OSAMU ,  TESHIGAWARA MINORU

IPC: B41J2/05 ,  B41J2/07 ,  B41J2/21 ,  G06K15/10

Abstract: The method involves generating printing data to be printed by each of two adjacent printing nozzle arrays on basis of tone information of image data to be printed. The printing data is generated in a range in which a sum of number of dots to be printed by two arrays does not exceed a predetermined number. Ink is discharged to a pixel of printing medium from the arrays on basis of the printing data generated. Independent claims are also included for the following: (a) an ink-jet printing apparatus (b) a program to control an ink-jet printing apparatus.

公开(公告)号：DE69939194D1

公开(公告)日：2008-09-11

申请号：DE69939194

申请日：1999-04-06

Applicant: CANON KK

Inventor： TESHIGAWARA MINORU ,  NISHIKORI HITOSHI ,  OTSUKA NAOJI ,  IWASAKI OSAMU ,  TAKAHASHI KIICHIRO ,  CHIKUMA TOSHIYUKI

IPC: B41J2/01 ,  B41J29/393 ,  B41J2/05 ,  B41J2/21 ,  B41J2/51 ,  B41J2/525 ,  B41J19/14

Abstract: In a complimentary printing by bi-directional scanning of a head (1) or by a plurality of heads, a plurality of patterns in which a print start timing is shifted by a predetermined amount are printed with respect to a reference dot formed by the forward scan of the bi-directional scanning or by one of the plurality heads (S1). In these patterns, an area factor by the dots formed by printing of the patterns is designed to be varied depending upon shifting amount. An average density is read from each of the plurality of patterns, optically (S2). The timing at which the maximum one among average densities read from the patterns is obtained, can be set as the printing registration condition (S3). Further, before the above reading operation, an optical sensor used for this operation is calibrated, for improving accuracies of the reading and the registrating. By these processings, printing registration between a forward and a reverse scan of a print head or printing registration between a plurality of print heads in a printing apparatus can be performed simply and with high accuracy.

公开(公告)号：DE60224601D1

公开(公告)日：2008-03-06

申请号：DE60224601

申请日：2002-01-30

Applicant: CANON KK

Inventor： YAZAWA TAKESHI ,  OTSUKA NAOJI ,  SUGIMOTO HITOSHI ,  TAKAHASHI KIICHIRO ,  NISHIKORI HITOSHI ,  IWASAKI OSAMU ,  TESHIGAWARA MINORU ,  CHIKUMA TOSHIYUKI ,  SEKI SATOSHI

IPC: B41J2/14 ,  B41J2/145 ,  B41J2/165

Abstract: A liquid ejection head (13) according to the present invention comprises a single liquid supplying port (18) to which a liquid is supplied, a plurality of liquid supplying passages (17a and 17b) having one end in communication with the liquid supplying port (18), a plurality of common liquid chambers (16a and 16b) that are in communication with the other ends of the liquid supplying passages (17a and 17b), respectively, and a plurality of ejection port groups which are in communication with the common liquid chambers (16a and 16b) via liquid channels and from which liquid droplets are ejected. A cross sectional area or length of the liquid supplying passage (17a) in communication with the ejection port group having a larger sum of opening areas of the ejection ports is set smaller or longer respectively than that of the liquid supplying passage (17b) that is in communication with the ejection port group having a smaller sum of opening areas of the ejection ports.