发明授权
US4942406A Laser printer with clock polygon control for inches and millimeters
失效
激光打印机,时钟多边形控制为英寸和毫米
- 专利标题: Laser printer with clock polygon control for inches and millimeters
- 专利标题(中): 激光打印机,时钟多边形控制为英寸和毫米
-
申请号: US248844申请日: 1988-09-26
-
公开(公告)号: US4942406A公开(公告)日: 1990-07-17
- 发明人: Yukio Tsuda
- 申请人: Yukio Tsuda
- 申请人地址: JPX Kawasaki
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JPX Kawasaki
- 优先权: JPX62-242644 19870929
- 主分类号: G02B26/10
- IPC分类号: G02B26/10 ; B41J2/44 ; G06K15/12 ; H04N1/04 ; H04N1/053 ; H04N1/113 ; H04N1/12 ; H04N1/17 ; H04N1/23 ; H04N1/333
摘要:
A laser printer comprises two reference clock generators to define the rotational speed of a polygon mirror (main scanning rotational mirror); namely, a first reference clock generator which generates a clock signal whose frequency is set so as to correspond to a scanning line density for a millimeter system, and a second reference clock generator for generating a clock signal whose frequency is set so as to correspond to a scanning line density for an inch system. One of these clock generators is selected in accordance with the scanning line density of received image data. As the rotational speed of the polygon mirror decreases, a decrease and an increase in the image data density occur in the directions of main- and sub-scan, respectively, whereas as the rotational speed of the polygon mirror increases, an increase and a decrease in the image data density occur in the directions of main- and sub-scan, respectively.
公开/授权文献
- US5561303A Silicon on diamond circuit structure 公开/授权日:1996-10-01
信息查询