Title:
MULTICOLOR PRINTER HAVING IMAGE RECORDER AS WELL AS METHOD FOR RECORDING IMAGE IN MULTICOLOR PRINTER HAVING IMAGE RECORDER
Document Type and Number:
Japanese Patent JP3488189
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a multicolor printer capable of preventing a color drift at a printing time.
SOLUTION: The multicolor printer reads a position of a positioning mark on a previously printed printing sheet to correct a color drift amount at a printing time, and obtains a magnification to variably magnify respective images. For example, it is assumed that a magnification of the image in a plate cylinder axial direction (main scanning direction) of a recording starting position (an upper end of the image) of a sub-scanning direction is h1 and the same magnification at a recording ending position (a lower end of the image) is h2. The printer gradually or stepwisely variably magnifies the image during image recording with the magnifications h1 and h2 when a laser beam is scanned by a polygon mirror 55 to record the image. Thus, the image can be variably magnified at each part. For example, an elongation of the image at paper trailing edge side due to a printing can be corrected.
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Inventors:
Edamitsu Kenji
Shoji Kakimoto
Yoshihiro Katsuma
Shoji Kakimoto
Yoshihiro Katsuma
Application Number:
JP2000253617A
Publication Date:
January 19, 2004
Filing Date:
August 24, 2000
Export Citation:
Assignee:
Dainippon Screen Mfg. Co., Ltd.
International Classes:
B41F7/02; B41C1/055; G03B27/73; (IPC1-7): B41F7/02; B41C1/055; G03B27/73
Domestic Patent References:
| JP200079674A | ||||
| JP2230268A | ||||
| JP635366A | ||||
| JP61104460U |
Attorney, Agent or Firm:
Shigeaki Yoshida (2 outside)