22.
    发明专利
    未知

    公开(公告)号:AT538588T

    公开(公告)日:2012-01-15

    申请号:AT03254828

    申请日:2003-08-01

    Applicant: CANON KK

    Abstract: This invention has as its object to allow a direct print system to display on a user interface of a digital camera whether or not a printer which can directly communicate with the digital camera has a function of automatically detecting a paper size and the like. To this end, according to this invention, in a print system that includes a digital camera, and a printer which can directly communicate with the digital camera, the printer has transmission means for transmitting information indicating that it has a function of automatically detecting the paper size and type to the digital camera, and the digital camera has a user interface for notifying the user that the printer has that function.

    23.
    发明专利
    未知

    公开(公告)号:AT426999T

    公开(公告)日:2009-04-15

    申请号:AT01310025

    申请日:2001-11-29

    Applicant: CANON KK

    Abstract: Image processing apparatus and image processing method for formation of high quality image by high-speed error diffusion processing by execution of more complicated threshold condition processing in a simple manner. When error diffusion processing is performed on multivalued image data having plural density components and the result of processing is outputted, upon execution of error diffusion processing on a first density component among the plural density components, a threshold value used in the error diffusion processing is determined based on a density value of a second density component, then the error diffusion processing is performed on the first density component based on the determined threshold value, and the result of execution of the error diffusion processing is outputted. Further, upon execution of the error diffusion processing on the second density component among the plural density components, a threshold value used in the error diffusion processing is determined based on a density value of the first density component, then the error diffusion processing is performed on the second density component based on the determined threshold value, and the result of the error diffusion processing is outputted.

    24.
    发明专利
    未知

    公开(公告)号:DE69938520D1

    公开(公告)日:2008-05-29

    申请号:DE69938520

    申请日:1999-02-03

    Applicant: CANON KK

    Abstract: A method for printing raster data on a recording medium using a plurality of ink jet nozzles includes assigning first raster data of a first set of rasters to the plurality of ink jet nozzles for printing during a first printing pass and second raster data of a second set of rasters to the plurality of ink jet nozzles for printing during a second printing pass, printing the first raster data during the first printing pass, advancing the recording medium a particular distance, printing the second raster data during the second printing pass, and advancing the recording medium the particular distance, wherein the above steps are repeated in order to print a first region of raster data on the recording medium.

    25.
    发明专利
    未知

    公开(公告)号:DE69737847D1

    公开(公告)日:2007-08-09

    申请号:DE69737847

    申请日:1997-07-29

    Applicant: CANON KK

    Abstract: In a recording apparatus for recording on a recording medium by using a plurality of recording heads arrange at a predetermined interval in a scan direction, said recording heads are caused to scan corresponding divided recording areas, said recording heads are caused to make the record by sharing the corresponding divided recording areas when said recording heads are caused to scan the divided recording areas, and record signals to be inputted to the recording heads corresponding to the divided recording areas to be recorded in the shared manner, are independently corrected for each of the divided recording areas. As a result, the occurrence of the density difference between divided areas is prevented.

    27.
    发明专利
    未知

    公开(公告)号:DE69833418D1

    公开(公告)日:2006-04-20

    申请号:DE69833418

    申请日:1998-11-13

    Applicant: CANON KK

    Abstract: In an information processing system, a printer driver in a host processor transfers print data to a print buffer in a serial printer having a configuration of one or more print heads. The print head configuration serially scans a predetermined number of print positions of a line and the print buffer for each print head has storage locations corresponding to the predetermined number of print positions. The printer driver determines empty storage locations of the current print head scan and sends print data for the next scan to the determined empty storage locations of the current scan in the print buffer.

    28.
    发明专利
    未知

    公开(公告)号:DE69826580T2

    公开(公告)日:2005-10-06

    申请号:DE69826580

    申请日:1998-07-27

    Applicant: CANON KK

    Abstract: A multi-head printer, and a driver therefor, in which the multi-head printer has at least a wide width print mode and a standard width print mode. At least first and second print heads are mounted for lateral reciprocal movement across a support surface for a recording medium, with the first and second print heads being laterally displaced with respect to each other such that both the first and second print heads can print a first lateral print area and such that only the second print head can print a portion of a second and larger lateral print area. In the standard width printing mode, fully or partially overlapped printing in the first lateral print area can be effected by both of the first and second print heads. In the wide width print mode, printing by only the second print head is effected, and not by the first print head. An additional wide print mode may be provided for partially overlapped printing by the first and second print heads, with the second print head printing primarily in the second lateral print area. Based on print head configuration, such as the type and color capability of print heads mounted in the first and second print heads, available print modes are determined, from which one of the available print modes is selected for effecting printout by the printer.

    29.
    发明专利
    未知

    公开(公告)号:DE69731793D1

    公开(公告)日:2005-01-05

    申请号:DE69731793

    申请日:1997-07-29

    Applicant: CANON KK

    Abstract: In a recording apparatus for recording on a recording medium by a plurality of recording heads, a scan unit has a carriage capable of mounting the recording heads at a predetermined interval and causes the recording heads to scan corresponding divided recording areas. A record control unit causes the recording heads to conduct a first record mode to record an area of a first recording width in a direction of scan by shared recording by the recording heads of the corresponding recording areas and a second record mode to record an area of a second recording width smaller than the recording width of the first recording width by causing at least one of the recording heads to record in the corresponding divided recording area when the corresponding divided recording areas are scanned. A distance between two recording apparatus mounted at outermost positions in the arrangement of the recording heads on the carriage is not larger than a difference between the first recording width and the second recording width.

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