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1. 发明申请

US20030215253A1 Process cartridge, memory medium for the process cartridge, image forming apparatus and image formation control system 有权
标题翻译：处理盒，处理盒的存储介质，图像形成装置和图像形成控制系统
公开(公告)号：US20030215253A1
公开(公告)日：2003-11-20
申请号：US10405488
申请日：2003-04-03
申请人： Canon Kabushiki Kaisha
发明人： Keiji Okano , Satoshi Sunahara , Satoru Motohashi
IPC分类号： G03G015/02
CPC分类号： G03G21/1889 , G03G15/0266
摘要： A memory medium is provided to a cartridge detachably mountable to an image forming apparatus. Into the memory medium, as information for performing charge control, information on an amount of usage of an image-bearing member and information on a charging alternating voltage (a threshold value for selection control of charging peak-to-peak voltage Vpp) are written. The image forming apparatus includes a charging bias power supply circuit, on its body side, including AC oscillation output means capable of outputting two or more species of alternating peak-to-peak voltages and AC detection means for detecting an alternating current through the image-bearing member. Charge control is performed on the basis of a detected value detected by the AC detection means and memory information for the cartridge, whereby good charge control and space saving and cost reduction of the power supply circuit are compatibly realized.
摘要翻译：存储介质被提供到可拆卸地安装到图像形成装置的盒。作为进行充电控制的信息，作为进行充电控制的信息，记录图像承载部件的使用量的信息和充电用交流电压的信息（充电峰峰值电压Vpp的选择控制的阈值）被写入到存储介质。图像形成装置包括充电偏置电源电路，其主体侧包括能够输出两种以上种类的交流峰 - 峰电压的交流振荡输出装置，以及用于检测通过图像形成装置的交流电流的AC检测装置，轴承构件。基于由AC检测装置检测的检测值和盒的存储器信息进行充电控制，从而兼容地实现充电控制和电源电路的节省空间和降低成本。

2. 发明申请

US20040022558A1 Charging system, process cartridge and image forming apparatus 失效
标题翻译：充电系统，处理盒和成像设备
公开(公告)号：US20040022558A1
公开(公告)日：2004-02-05
申请号：US10418055
申请日：2003-04-18
申请人： CANON KABUSHIKI KAISHA
发明人： Keiji Okano , Masahiro Yoshida
IPC分类号： G03G015/02
CPC分类号： G03G15/0208 , G03G2215/025
摘要： A charging system is provided with a rotatable member to be charged, and a rotatable charging member provided with electroconductive particles thereon and forming a nip part with the member to be charged and disposed in the nip part to charge the member to be charged, wherein when the diameter of the member to be charged is defined as LD (mm) and the diameter of the charging member is defined as LC (mm), LDnull25 and LDnullLCnull350 are satisfied. Thereby, in the charging system, a process cartridge and an image forming apparatus, an image bearing member can be made small in diameter.
摘要翻译：充电系统设置有待充电的可旋转构件，以及在其上设置有导电颗粒的可旋转充电构件，并且与要充电的构件形成咬合部并设置在辊隙部中以对待充电构件充电，其中当要充电的构件的直径被定义为LD（mm），并且充电构件的直径被定义为LC（mm），LD <= 25且LDxLC> = 350。因此，在充电系统中，可以使处理盒和图像形成装置的图像承载部件的直径变小。

3. 发明申请

US20030090559A1 Process cartridge, image forming apparatus, and image forming method 失效
公开(公告)号：US20030090559A1
公开(公告)日：2003-05-15
申请号：US10300594
申请日：2002-11-21
申请人： CANON KABUSHIKI KAISHA
发明人： Keiji Okano , Gaku Konishi , Akira Domon
IPC分类号： B41J002/385
CPC分类号： G03G21/1889 , G03G15/065 , G03G2221/1823 , G03G2221/183 , G06K15/128
摘要： When a user changes a density adjusting value (developing contrast), and even variations and usage state of the process characteristics (photosensitive body and developing) of the cartridge change, the amount of recording agent consumed can be suppressed low, and a sharp line image can be recorded. An image forming apparatus of this invention includes an edge detecting portion for detecting an edge of image data, an image data correcting portion for correcting image data inside the edge so as to decrease its density, a laser driving circuit for forming an electrostatic latent image on a photosensitive body, and a correction value determining table for acquiring an instruction value for giving an instruction to correct a density contrast, wherein a correction condition for image data changes in accordance with an instruction value.

4. 发明申请

US20030198485A1 Charging system, process cartridge and image forming apparatus 失效
标题翻译：充电系统，处理盒和成像设备
公开(公告)号：US20030198485A1
公开(公告)日：2003-10-23
申请号：US10418219
申请日：2003-04-18
申请人： Canon Kabushiki Kaisha
发明人： Masaki Ojima , Noboru Kashimura , Keiji Okano , Junichi Kato
IPC分类号： G03G015/02
CPC分类号： G03G15/0216
摘要： An image forming apparatus according to the present invention includes an image bearing member, and a charging member for forming a nip with the image bearing member thereby charging the image bearing member, wherein conductive particles are provided in the nip, wherein a time factor a represented by a following equation satisfies a condition null>15: nullnullnull2nullknullNcnull(W/Vc)/(nullnullCdnullZ) Znullnull0.5null1n(nullnullknullNc)null1n({square root}{square root over (null)}nullD/2) (nullnull1.1932) in which null (null) represents a surface resistivity of the image bearing member; Cd (F/mm2) represents an electrostatic capacitance of the image bearing member; D (mm) represents a diameter of the conductive particle; Nc (particle/mm2) represents a density of the conductive particles present on the charging member; Vc (mm/sec) represents a surface moving speed of the charging member; Vd (mm/sec) represents a surface moving speed of the image bearing member; knullVc/Vd; and W (mm) represents a width of the nip in the moving direction of the image bearing member.
摘要翻译：根据本发明的图像形成装置包括图像承载部件和用于与图像承载部件形成辊隙从而对图像承载部件进行充电的充电部件，其中导电颗粒设置在辊隙中，其中表示的时间因子a 通过以下等式满足条件α> 15：α= pi2.k.Nc。（W / Vc）/（rho.Cd.Z）Z = -0.5.1n（pi.k.Nc）-1n（{square root} {平方根超过（β）} D / 2）（β= 1.1932），其中rho（Ω）表示图像承载部件的表面电阻率; Cd（F / mm 2）表示图像承载部件的静电电容; D（mm）表示导电粒子的直径; Nc（粒子/ mm 2）表示充电部件上存在的导电粒子的密度; Vc（mm / sec）表示充电部件的表面移动速度; Vd（mm / sec）表示图像承载部件的表面移动速度; k = Vc / Vd; W（mm）表示图像承载部件的移动方向上的辊隙的宽度。

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