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71. 发明专利

JP2003307884A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2003307884A
公开(公告)日：2003-10-31
申请号：JP2002111809
申请日：2002-04-15
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： MIZUISHI HARUJI , UNO MUGIJIROU , SAITO SEIJI , TANAKA HIDEKI , TAMAKI SHINJI , TAWADA TAKAAKI , ISHIBASHI MIKIO
IPC分类号： G03G15/00 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To make image density uniform by keeping toner concentration constant even when transfer material is of a type that the electrified amount of developer is lowered because of much paper powder or calcium carbonate. SOLUTION: When a main switch is turned on, whether or not information on the type of the paper P is inputted in an operation part (control panel) (by a user or a serviceman) is checked before forming a reference image (S15). When it is not inputted, a constant K is set (S16). After toner density VT in a copy is detected thereafter, toner concentration VT' is calculated by subtracting K from the detected toner concentration VT in a pseudo manner (S17) and is compared with VTreft', then toner is supplied based on the obtained result. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：即使当转印材料是由于大量纸粉或碳酸钙而导致显影剂带电量降低的类型时，通过保持调色剂浓度恒定来使图像浓度均匀。
解决方案：当主开关打开时，在形成参考图像之前检查在用户或维修人员的操作部分（控制面板）中是否输入关于纸张类型P的信息（ S15）。当不输入时，设定常数K（S16）。此后检测到复印件中的调色剂浓度VT之后，通过以伪方式从检测到的调色剂浓度VT中减去K来计算调色剂浓度VT'（S17）并与VTreft'进行比较，然后基于获得的结果提供调色剂。版权所有（C）2004，JPO

72. 发明专利

JP2003280339A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2003280339A
公开(公告)日：2003-10-02
申请号：JP2002081901
申请日：2002-03-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAWADA TAKAAKI , MIZUISHI HARUJI , UNO MUGIJIROU , SAITO SEIJI , TANAKA HIDEKI , TAMAKI SHINJI , ISHIBASHI MIKIO
IPC分类号： G03G15/02
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus keeping the surface of an electrifying roller in a clean state over a long period of time, preventing soil from adhering to the surface of the electrifying roller or a brush cleaner again, and preventing faulty electrification caused by the accumulation of the soil of the surface of the electrifying roller over a long period of time.
SOLUTION: When a photoreceptor (1) is reversely rotated, the electrifying roller (9) is reversely rotated with the photoreceptor (1) but the brush cleaner (10) is not rotated with the photoreceptor (1). When the photoreceptor (1) is normally rotated, bias is not applied to the roller (9) until a contact nip between the roller (9) and the cleaner (10) comes into contact with the photoreceptor (1) once or more, whereby the soil is prevented from adhering to the roller (9) again. A one-way clutch (11) is used as the rotating mechanism of the cleaner (10).
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了提供一种成像装置，其将充电辊的表面长时间保持在清洁状态，防止污垢再次附着在充电辊或刷子清洁器的表面上，以及防止长时间由充电辊表面的土壤积聚引起的电气故障。解决方案：当感光体（1）反向旋转时，充电辊（9）与感光体（1）反向旋转，而电刷清洁器（10）不与感光体（1）一起旋转。当感光体（1）正常旋转时，直到辊（9）和清洁器（10）之间的接触压合与感光体（1）接触一次或多次，才向辊（9）施加偏压，由此防止土壤再次粘附到辊（9）上。单向离合器（11）用作清洁器（10）的旋转机构。版权所有（C）2004，JPO

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