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    • 91. 发明申请
    • IMAGE STITCHING FOR A MULTI-HEAD PRINTER
    • 多头打印机的图像刺绣
    • WO2004077815A3
    • 2005-02-24
    • PCT/US2004004873
    • 2004-02-19
    • POLAROID CORP
    • SAQUIB SUHAIL SVETTERLING WILLIAM T
    • B41J2/355B41J2/505H04N1/387H04N1/407B41J3/42B41J3/54
    • B41J2/5056B41J2/355H04N1/3876
    • Techniques are disclosed for stitching images printed by a multi-head printer in a manner that is relatively insensitive to misregistration of the image segments. When a pair of overlapping print heads print a pair of adjacent image segments which meet in a stitching region (608), printing at each location in the stitching region (608) is accomplished by both print heads with a weighting (614, 624) that depends on the location being printed within the stitching region. In one embodiment, for example, the output (634, 644) of each print head is weighted by a linear function of horizontal pixel position. Techniques are also disclosed for selecting screening patterns for use when stitching is performed with variable-dot printers. Such screening patterns are selected to minimize variations in density that may arise as the result of cross-web and/or down-web misregistration.
    • 公开了以对于图像片段的不对准相对不敏感的方式拼接由多头打印机打印的图像的技术。 当一对重叠的打印头打印在拼接区域(608)中相遇的一对相邻图像片段时,在缝合区域(608)中的每个位置处的打印由具有加权(614,624)的两个打印头实现, 取决于打印区域内的位置。 在一个实施例中,例如,每个打印头的输出(634,644)由水平像素位置的线性函数加权。 还公开了用于选择使用可变点打印机进行缝合时使用的筛选图案的技术。 选择这种筛选模式以最小化由于网幅和/或下卷筒不对准而可能产生的密度变化。
    • 95. 发明申请
    • INK SUPPLY APPARATUS
    • 墨水供应装置
    • WO98040217A1
    • 1998-09-17
    • PCT/US1998/003931
    • 1998-03-06
    • B41J2/175B41J3/54
    • B41J2/17509B41J3/543
    • An ink supply apparatus includes a carriage (21) on which a printer head arrangement (37) including a printer head (33) is mounted to an alignment plate (35) and an ink reservoir arrangement (45) including an ink reservoir is mounted to a frame (57) pivotably connected to the alignment plate (35) to permit access to the printer head arrangement (37). A conduit (51) connects an inlet (41) of the printer head (33) to an outlet (49) of the ink reservoir. The outlet (49) of the ink reservoir is located directly behind the inlet (41) of the printer head (33) when the frame is pivoted to a normal operating position to minimize surges in the conduit (51) and thereby prevent leakage out of or air ingestion into the nozzles of the printer head (33). The ink supply apparatus is particularly well suited for use in ink jet printers where multiple printer heads are used and printing occurs in two directions of travel of the carriage (21).
    • 一种墨水供应装置,包括一个托架(21),包括打印头(33)的打印机头装置(37)安装在对准板(35)上并且包括墨水容器的墨水容纳装置(45)安装在该托架上, 框架(57)可枢转地连接到对准板(35)以允许进入打印机头装置(37)。 导管(51)将打印头(33)的入口(41)连接到墨水容器的出口(49)。 当框架枢转到正常操作位置时,墨水容器的出口(49)位于打印头(33)的入口(41)的正后方,以最小化导管51中的浪涌,从而防止泄漏 或空气摄入到打印头(33)的喷嘴中。 供墨装置特别适用于使用多个打印头的喷墨打印机,并且在滑架(21)的两个行进方向上进行打印。