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1. 发明授权

US5657069A Method and apparatus for grey level printing 失效
标题翻译：灰度打印方法和装置
公开(公告)号：US5657069A
公开(公告)日：1997-08-12
申请号：US807522
申请日：1991-12-13
申请人： E. Michael Kelly , James R. Prowak
发明人： E. Michael Kelly , James R. Prowak
IPC分类号： G06K15/12 , H04N1/40 , B41T2/45 , G01D15/14 , H04N1/23 , B41T2/47
CPC分类号： G06K15/1247 , H04N1/40031
摘要： A method and apparatus for grey level printing includes a plurality of recording elements which are enabled for variable periods of time during a cycle of recording grey level pixels. For each recording element a comparator compares the count in a time-changing exposure counter with a multibit grey level data signal. The exposure counter is decremented/incremented by exposure clock pulses from a programmable exposure clock. The exposure clock includes a master clock and an address counter that provides an incremented address signal in response to each set of N pulses from the master clock. The address signal identifies a location in memory of a set of signals used to generate exposure clock pulses. The set of signals is output in parallel to a serial shift register and shifted out serially to form the exposure clock pulses for decrementing/incrementing the exposure counter.
摘要翻译：用于灰度级打印的方法和装置包括在记录灰度级像素的周期期间使能够变化的时间段的多个记录元件。对于每个记录元件，比较器将时变曝光计数器中的计数与多位灰度级数据信号进行比较。曝光计数器由可编程曝光时钟的曝光时钟脉冲递减/递增。曝光时钟包括主时钟和地址计数器，其响应于来自主时钟的每组N个脉冲提供增加的地址信号。地址信号识别用于产生曝光时钟脉冲的一组信号的存储器中的位置。该组信号与串行移位寄存器并行输出，并串行移出以形成用于递增/递增曝光计数器的曝光时钟脉冲。

2. 发明授权

US5382966A Exposure head for image recording apparatus 失效
标题翻译：图像记录装置的曝光头
公开(公告)号：US5382966A
公开(公告)日：1995-01-17
申请号：US894740
申请日：1992-06-05
申请人： Atsuhiro Doi
发明人： Atsuhiro Doi
IPC分类号： B41J2/45 , B41T2/45 , G01D15/14
CPC分类号： B41J2/451
摘要： An exposure head for use in an image recording apparatus includes a plurality of light-emitting elements such as LEDs or LDs supported on a support for emitting respective light beams, and a single optical system for focusing the light beams onto a recording medium. The support and the optical system are movable in unison in an auxiliary scanning direction along an image recording drum which is rotatable in a main scanning direction transverse to the auxiliary scanning direction and carries the recording medium wound therearound.
摘要翻译：用于图像记录装置的曝光头包括支撑在用于发射各个光束的支撑件上的诸如LED或LD的多个发光元件和用于将光束聚焦到记录介质上的单个光学系统。支撑体和光学系统可以沿辅助扫描方向一致地沿图像记录鼓移动，图像记录鼓可以沿与辅助扫描方向横切的主扫描方向旋转，并携带围绕其的记录介质。

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