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    • 17. 发明申请
    • IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE
    • 图像形成装置和处理盒
    • US20080304843A1
    • 2008-12-11
    • US12134701
    • 2008-06-06
    • Akio KOSUGETakaya MuraishiTakeshi ShintaniYasushi AkibaSatoshi HatoriKaoru Yoshino
    • Akio KOSUGETakaya MuraishiTakeshi ShintaniYasushi AkibaSatoshi HatoriKaoru Yoshino
    • G03G15/02
    • G03G15/0266G03G15/5008
    • An image forming apparatus including an image bearing member the moving surface of which travels, a charging device including a charging member located facing the moving surface of the image bearing member, which uniformly charges the moving surface of the image bearing member to form a latent electrostatic image thereon by applying a charging bias in which an AC voltage is overlapped with a DC voltage to the charging member, a developing device to develop the latent electrostatic image with toner to form a toner image on the moving surface of the image bearing member, a transfer device to transfer the toner image on the moving surface of the image bearing member to a recording medium, a fixing device to fix the toner image on the recording medium, an image formation speed switching device to switch from one image formation speed to another image formation speed among multiple image formation speeds by changing a surface traveling speed of the image bearing member according to a particular switching condition, a storage device to store a charging current target of the charging bias applied to the charging member for each of the multiple image formation speeds, an electric current detection device to detect an electric current flown through the charging member and an AC voltage adjustment device to adjust an AC voltage of the charging bias applied to the charging member such that the electric current detected by the electric current detection device approaches the charging current target stored at the storage device which corresponds to the image formation speed when the electric current is detected. With regard to at least two image formation speeds among the multiple image speeds, the charging current target is set for each of the at least two image formation speeds such that each AC voltage adjusted by the AC voltage adjustment device is substantially the same.
    • 一种图像形成装置,包括其运动表面行进的图像承载部件,充电装置包括面向图像承载部件的移动表面的充电部件,其对图像承载部件的移动表面均匀地充电以形成静电 通过向充电部件施加AC电压与DC电压重叠的充电偏压的显影装置,利用调色剂显影静电潜像以在图像承载部件的移动表面上形成调色剂图像的显影装置, 转印装置将图像承载部件的移动表面上的调色剂图像转印到记录介质上,将调色剂图像定影在记录介质上的定影装置,从一个图像形成速度切换到另一图像的图像形成速度切换装置 通过根据特定方式改变图像承载部件的表面行进速度,在多个图像形成速度之间的形成速度 存储装置,用于存储针对多个图像形成速度中的每一个施加到充电构件的充电偏压的充电电流目标;电流检测装置,用于检测流过充电构件的电流和AC电压 调节装置,用于调整施加到充电部件的充电偏压的交流电压,使得由电流检测装置检测的电流接近存储在存储装置处的充电电流目标,对应于图像形成速度,当电流为 检测到。 关于多个图像速度中的至少两个图像形成速度,对于至少两个图像形成速度中的每一个设置充电电流目标,使得由AC电压调节装置调节的每个AC电压基本相同。
    • 18. 发明授权
    • Method and apparatus for image forming having a predetermined gap formed between an image bearing member and a developing member
    • 用于图像形成的方法和装置,其具有形成在图像承载部件和显影部件之间的预定间隙
    • US07366441B2
    • 2008-04-29
    • US11207731
    • 2005-08-22
    • Satoshi Hatori
    • Satoshi Hatori
    • G03G21/18
    • G03G21/1821G03G15/0813G03G2215/0872G03G2221/1654G03G2221/1853
    • A process cartridge includes an image bearing unit, a developing unit, and first and second positioning members. The image bearing unit includes a photoconductor, and a photoconductor case accommodating the photoconductor. The developing unit detachably combined with the image bearing unit includes a developer case containing a developer, a developing roller carrying the developer. The first and second positioning members are respectively disposed at each side of the photoconductor case and the developer case when the photoconductor case and the developer case are attached in combination, and is configured to position the developing roller and the photoconductor so as to regulate a gap formed between the developing roller and the photoconductor to a predetermined distance.
    • 处理盒包括图像承载单元,显影单元以及第一和第二定位构件。 图像承载单元包括光电导体和容纳光电导体的光电导体壳体。 与图像承载单元可拆卸地组合的显影单元包括容纳显影剂的显影剂盒,承载显影剂的显影辊。 第一和第二定位构件分别设置在光电导体壳体的两侧,并且当感光体壳体和显影剂盒体组合安装时,显影剂壳体被构造成定位显影辊和光电导体,以便调节间隙 在显影辊和感光体之间形成预定距离。