发明名称 |
Apparatus and method controlling zooming process at laser device for high-speed high-resolution double-sided printing without wide-ranged image degradation or banding |
摘要 |
An image forming apparatus includes a positioning unit that acquires a misalignment amount of a pixel in a main-scanning direction and a sub-scanning direction, the pixel as a reference pixel for zooming image data, and decides a position of a pixel as a correction target, based on the misalignment amount; a correcting unit that corrects the pixel; a zooming unit that controls the positioning unit and the correcting unit so as to repeatedly perform the positioning process and the correction process on a pixel line; a pattern recognition unit that performs pattern matching on a predetermined pattern and a predetermined pixel line; and a pixel position changing unit that shifts the decided pixel position in the sub-scanning direction, wherein the zooming unit performs the zooming process on the pixel line of the sub-scanning direction including the pixel that is located at shifted pixel position.
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申请公布号 |
US8493613(B2) |
申请公布日期 |
2013.07.23 |
申请号 |
US20100721012 |
申请日期 |
2010.03.10 |
申请人 |
KAIMA NOBUYOSHI;RICOH COMPANY, LIMITED |
发明人 |
KAIMA NOBUYOSHI |
分类号 |
H04N1/393;B41J2/47;G06K15/12;H04N1/58 |
主分类号 |
H04N1/393 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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