发明名称 |
Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatus |
摘要 |
In a pixel clock creation method and device, a high frequency clock is created. A scanning time needed to scan a predetermined scanning length is detected in accuracy of half a period of the high frequency clock to output a detection value indicating the detected scanning time. The detection value and a predetermined target value are compared to output a comparison result. A phase data is created based on the comparison result. A pixel clock whose phase is controlled based on both the high frequency clock and the phase data is created.
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申请公布号 |
US7212224(B2) |
申请公布日期 |
2007.05.01 |
申请号 |
US20040953372 |
申请日期 |
2004.09.30 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
NIHEI YASUHIRO;ISHIDA MASAAKI;OMORI ATSUFUMI;OZASA DAN |
分类号 |
B41J2/44;B41J2/47;B41J2/435;G02B26/10;G02B26/12;G06K15/12;H04N1/036;H04N1/113 |
主分类号 |
B41J2/44 |
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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