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1. 发明授权

US4711552A Synchronizing electrostatic copy formation 失效
标题翻译：同步静电复印形成
公开(公告)号：US4711552A
公开(公告)日：1987-12-08
申请号：US864406
申请日：1986-05-19
申请人： Ben A. Nilsson , Roger D. Shepherd
发明人： Ben A. Nilsson , Roger D. Shepherd
IPC分类号： G03G15/00 , G03G15/04 , G03G15/043 , G03G15/30 , G03G21/00
CPC分类号： G03G15/305 , G03G15/04
摘要： In an electrophotographic copier, adjustments are made to synchronize copy sheet gating optics start of scan, and document conveyor registration. The adjustment to the copy sheet gating is effected by making a copy with the optics assembly inactivated, determining the length of undeveloped area adjacent to the leading or trailing edge of the copy, and adjusting the start of scan as a function of the determined length. The start of scan of the optics assembly is effected by positioning a test master document with dark portions adjacent to its leading and trailing edges, making a copy of the test master document, determining the length of undeveloped area adjacent to the leading or trailing edge of the copy, and adjusting the start of scan as a function of the determined length. The adjustment of the document conveyor registration is effected by feeding the test master document to the document glass, making a copy of the test master document, determining the length of undeveloped area adjacent to the leading or trailing edge of the copy, and adjusting the document conveyor as a function of the determined length. The determining steps may be done by visual inspection or by an optical sensor. The adjusting may be done manually, either electronically or mechanically. In the alternative, the adjusting may be done automatically in response to the optical sensor.
摘要翻译：在电子照相复印机中，进行调整，以使复印纸门控光学元件的扫描开始同步，以及文件传送器注册。复印纸选通的调整是通过使光学组件的复印件失效，确定与复印件的前端或后端相邻的未展开区域的长度，并根据确定的长度调整扫描开始来实现的。光学组件的扫描的开始是通过将测试主文档定位成与其前缘和后缘相邻的较暗部分来实现的，从而制作测试主文档的副本，确定邻近前缘或后缘的未展开区域的长度复制，并根据确定的长度调整扫描开始。文档输送机登记的调整是通过将测试主文档馈送到稿台玻璃上，制作测试主文档的副本，确定与副本的前端或后端相邻的未开发区域的长度，并调整文档输送机作为确定的长度的函数。确定步骤可以通过目视检查或通过光学传感器来完成。可以通过电子或机械手动进行调整。或者，可以响应于光学传感器自动进行调整。

2. 发明授权

US4312589A Charge density control for an electrostatic copier 失效
标题翻译：静电复印机的充电密度控制
公开(公告)号：US4312589A
公开(公告)日：1982-01-26
申请号：US95712
申请日：1979-11-19
申请人： Robert C. Brannan , Harvey R. Markham , Ben A. Nilsson
发明人： Robert C. Brannan , Harvey R. Markham , Ben A. Nilsson
IPC分类号： G03G15/02 , G03G15/00 , G03G15/08 , G03G21/00
CPC分类号： G03G15/0849 , G03G15/5041 , G03G2215/00042
摘要： An electrophotographic copier having a toner concentration control apparatus which periodically effects a toner-patch test cycle during which the optical density of toner deposited on a photoconductor test area is measured, as by light reflectance. A time period of copier non-use, exceeding a preset time period, or a copier on/off operation, referred to as critical events, results in a transient mode of copier operation which includes reduction of photoconductor charge magnitude during the next subsequent use, independent of the extent of the prior copier use history. During such subsequent use, the toner-patch test cycle is operable to effect closed-loop control of changing the photoconductor's charge magnitude back to its nominal working value. More specifically, so long as the results of a toner-patch test cycle indicate an acceptable toner density, the photoconductor charge magnitude is maintained at a lower than working level. As the results of the toner-patch test cycle periodically indicate lower than acceptable toner density, as by a high light reflectance off the test patch, the photconductor's charge magnitude is periodically increased until finally the working charge magnitude is reached. The results of the toner-patch test cycle are operable to add toner to the copier's developer only when the photoconductor's charge magnitude has been increased to at or near the working magnitude.
摘要翻译：具有调色剂浓度控制装置的电子照相复印机，其周期性地进行调色剂贴片测试循环，其中测量沉积在光电导体测试区域上的调色剂的光密度，如通过光反射。复印机不使用的时间段，超过预设时间段或被称为关键事件的复印机开/关操作导致复印机操作的瞬时模式，其包括在下一次使用期间降低感光体电荷量值，独立于以前的复印机使用历史的程度。在这样的后续使用期间，调色剂贴片测试循环可操作以实现闭环控制，以将感光体的电荷量值改变回其标称工作值。更具体地说，只要调色剂贴片测试循环的结果指示可接受的调色剂浓度，光电导体电荷量就保持在低于工作电平。由于调色剂贴片测试周期的结果周期性地指示低于可接受的调色剂浓度，因为离测试贴片的高的光反射率，光电导体的电荷量值周期性地增加，直到达到工作电荷的大小。只有当光电导体的电荷幅度增加到等于或接近工作幅度时，调色剂 - 贴片测试循环的结果可操作以向复印机的显影剂添加调色剂。

3. 发明授权

UST101801I4 Apparatus and method for accurately setting a gap between mating surfaces on a copier magnetic brush drum and roller 失效
标题翻译：用于精确设定复印机磁刷鼓和滚筒上的配合表面之间间隙的装置和方法
公开(公告)号：UST101801I4
公开(公告)日：1982-05-04
申请号：US182241
申请日：1980-08-28
申请人： James E. Bierschbach , Raymond A. Daniels , Robert L. Fey , Ben A. Nilsson , Roberta R. Tanner
发明人： James E. Bierschbach , Raymond A. Daniels , Robert L. Fey , Ben A. Nilsson , Roberta R. Tanner
摘要： An electrophotographic copier's magnetic brush roller applies developer material to the surface of a photoconductor drum. Two parallel centerlines define the photoconductor drum surface a fixed gap distance from the magnetic brush roller's mating surface. Moving the magnetic brush roller adjusts the gap distance between the mating surfaces. Two sandwiches of conventional, standard-thickness, flexible, plastic sheets form tools; one having a total thickness slighty larger than the desired gap between the mating surfaces of the drum and roller, and the other having a thickness slightly less than the desired gap. The desired gap is set by separating the drum and roller surfaces, inserting the tool that is slightly smaller than the gap and closing the gap sufficiently so that each of the mating surfaces on the drum and roller contacts one surface of the tool. The surfaces are then separated, the tool is withdrawn, and the second tool, which is slightly larger than the desired gap spacing, is inserted and the mating surfaces of the drum and roller are closed together until the second tool cannot be further inserted. The gap is accurately set when the first tool may be pushed into the gap, without buckling, but the second tool may not.

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