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1. 发明专利

JP2003091155A DEVELOPER CONTROL MEMBER UNIT, DEVELOPING DEVICE PROVIDED WITH THE SAME, AND PROCESS CARTRIDGE 审中-公开
公开(公告)号：JP2003091155A
公开(公告)日：2003-03-28
申请号：JP2001282788
申请日：2001-09-18
申请人： CANON KK
发明人： KONISHI TAKESHI , OKANO KEIJI , DOMON AKIRA
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a rubber blade with suppressed rubber-peeling at a low cost, to provide a developing blade unit for suppressing a variation in the contact pressure of the developing blade, and to provide a developing device and a process cartridge having stable developing characteristics, constituted so that an image of uneven density and a fogged image, etc., may not be outputted. SOLUTION: As to the typical constitution of the developing device, the developing blade unit 1 is provided with a developing sleeve 4 for carrying/ transferring developer, the developing blade 2 having the leading end part which comes into contact with the developing sleeve 4 so as to travel toward the upstream side in the moving direction of the developing sleeve 4 and for forming a developer layer on the developing sleeve 4, and a supporting plate 3 for supporting the developing blade 2, a soft elastic member 11 is arranged between the supporting plate 3 and the developing blade 2.

2. 发明专利

JP2002351241A IMAGE FORMING DEVICE 失效
公开(公告)号：JP2002351241A
公开(公告)日：2002-12-06
申请号：JP2001160574
申请日：2001-05-29
申请人： CANON KK
发明人： DOMON AKIRA , OKANO KEIJI , KONISHI TAKESHI
IPC分类号： G03G15/00 , G03G15/04 , G03G15/043 , G03G15/20 , G03G21/00
摘要： PROBLEM TO BE SOLVED: To provide an image forming device, capable of suppressing the change of a printing magnification in the sub-scanning direction due to change in the temperature of a pressing roller while making the image forming device small- sized. SOLUTION: In the image forming device where the distance between a transferring position and a fixing position is shorter than the distance of a paper passing direction, the number of rotations of the pressing means is controlled, based on at least either one of the value of the outer diameter of the pressing means, measured at a predetermined temperature and detecting information from a temperature detecting element.

3. 发明专利

JP2002214985A IMAGE FORMING DEVICE 失效
公开(公告)号：JP2002214985A
公开(公告)日：2002-07-31
申请号：JP2001013461
申请日：2001-01-22
申请人： CANON KK
发明人： DOMON AKIRA , OKANO KEIJI
IPC分类号： G03G21/00 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To inexpensively, easily and accurately discriminate whether a process cartridge is new or old without mounting parts such as a storing element and a transmitter in the process cartridge. SOLUTION: By providing a toner residual amount detection circuit 220 detecting toner residual amount in a developing device 50 and a cartridge capacity detection circuit 700 detecting the usage of a photoreceptor, and by storing toner residual amount detection information, photoreceptor usage information and the number of printed sheets in the storing element 230 of a device main body 310, whether the cartridge is new or old is discriminated based on the toner residual amount detection information and the photoreceptor usage information.

4. 发明专利

JP2002072638A IMAGE FORMING DEVICE 失效
公开(公告)号：JP2002072638A
公开(公告)日：2002-03-12
申请号：JP2001177037
申请日：2001-06-12
申请人： CANON KK
发明人： OKANO KEIJI , TSUKIDA TATSUICHI , DOMON AKIRA
IPC分类号： B41J2/44 , G03G15/04 , G03G15/043 , G03G21/00 , H04N1/113 , H04N1/29 , H04N1/387 , H04N1/40
摘要： PROBLEM TO BE SOLVED: To provide an image forming device where an equivalent image can be formed for all of a character, an all black image and a dot image even when picture element density is switched over. SOLUTION: In the device, when an image signal is outputted by a control means 18, an exposing means 102 carrying out exposure of an image carrier 1 is driven by an optical beam driving means 17 based on the image signal and an electrostatic latent image is formed on the image carrier. Furthermore, when the picture element density of the electrostatic latent image is switched over, a switch over signal that switches over the responsiveness for an image signal of the exposure means 102 is outputted to the optical beam driving means 17 by the control means 18 and the responsiveness for the image signal of the exposure means 102 is switched over.

5. 发明专利

JP2001242766A ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE AND CARTRIDGE 失效
公开(公告)号：JP2001242766A
公开(公告)日：2001-09-07
申请号：JP2000054911
申请日：2000-02-29
申请人： CANON KK
发明人： DOMON AKIRA , OKANO KEIJI , KONISHI TAKESHI
IPC分类号： G03G21/00 , G03G15/08 , G03G21/18
摘要： PROBLEM TO BE SOLVED: To correct fluctuation in the characteristics of a developing device or an electrophotographic photoreceptor, and securely detect a residual amount of developer sequentially. SOLUTION: Information on toner consumption per one dot optimized according to the characteristics of a cartridge 100 is stored in a nonvolatile memory 101 mounted in the cartridge 100. An image forming device 200 performs pixel count remaining amount detection based on the information on toner consumption.

6. 发明专利

JPH11327304A DEVELOPING DEVICE, DEVELOPING CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING DEVICE 失效
公开(公告)号：JPH11327304A
公开(公告)日：1999-11-26
申请号：JP15232798
申请日：1998-05-15
申请人： CANON KK
发明人： SATO HIROSHI , DOMON AKIRA , SAITO MASANOBU , SHIMIZU YASUSHI , KONISHI TAKESHI
IPC分类号： G03G21/18 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To obtain a developing device which can be made easily electrically conductive with an image forming device main body and facilitates the execution of the detections of the remaining amount of a developer and temperature, etc., and has an advantages of reduction in the number of parts for these detecting member, etc., in a developing device incorporated in the image forming device main body. SOLUTION: An opening part 7A of a partition wall 7a partitioning a developing container 7 into a developing chamber, in which a developing sleeve is installed, and a developer chamber housing toner, is covered with a seal member 11 consisting of a sticking layer stuck to the partition wall, a reinforcing resin layer and a conductive layer. In the seal member 11, two cut grooves G are previously formed in pulling out direction and the seal member 11 is made able to be torn and pulled out along the cut grooves G by pulling from the outside of the container 7. Thus, the upper seal part 11A of two parts remaining on the partition 7 is projected outside the container 7 and the projecting part P1 is made to be a point of contact for making the developing device electrically conductive with the image forming device main body.

7. 发明专利

JPH11174808A DEVELOPING DEVICE AND IMAGE FORMING DEVICE 失效
公开(公告)号：JPH11174808A
公开(公告)日：1999-07-02
申请号：JP34602897
申请日：1997-12-16
申请人： CANON KK
发明人： NAKAZONO YUSUKE , YOSHIDA MASAHIRO , DOMON AKIRA
IPC分类号： G03G21/18 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a developing device which uses up developer unwastefully without needing the operation of shaking a process cartridge. SOLUTION: In the developing device 7 having, at least, toner (developer) 8, a developing sleeve (developer carrier) 10 for carrying the toner 8 while holding it thereon, and a developing container 3 for supplying the toner 8 to the developing sleeve 10, the developing container 3 is turned around the developing sleeve 10. Because the developing container 3 itself inclines, the angle of the inclination of the inside bottom of the developing container 3 can be varied, therefore the toner 8 remaining in the developing container 3 can be carried to the developing sleeve 10, then this device eliminates the need for the operation of shaking the process cartridge 43 and makes it possible to use up the toner 8 unwastefully.

8. 发明专利

JPH09222818A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH09222818A
公开(公告)日：1997-08-26
申请号：JP2926396
申请日：1996-02-16
申请人： CANON KK
发明人： SAITO MASANOBU , NAKAZONO YUSUKE , DOMON AKIRA
IPC分类号： G03G15/20 , G03G21/10
摘要： PROBLEM TO BE SOLVED: To prevent offset toner from adhering to a pressure roller by uniformly applying wax to the pressure roller without a web or the like in a heat fixing device adapted to press a transfer material to a heat source by a pressure roller. SOLUTION: In an image forming device having a heat fixing means 10 including a pressure roller 23 for pressing a transfer material to a heat source from the back of an image print surface, high temperature softening solid wax 16 is applied to the back of an image print surface of a recording material P. After that, the recording material P enters a heat fixing means 10, and the wax 1 6 is softened and fused from the back of the recording material P by heat of the pressure roller to be uniformly supplied and applied to the pressure roller 23, thereby preventing offset toner from adhering to the pressure roller.

9. 发明专利

JPH09106175A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH09106175A
公开(公告)日：1997-04-22
申请号：JP26127395
申请日：1995-10-09
申请人： CANON KK
发明人： DOMON AKIRA
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an image forming device capable of minimizing the increase of driving torque and reducing a sleeve ghost by the use of a simple constitution. SOLUTION: In the image forming device provided with at least a photoreceptive drum (image carrier) 2 carrying an electrostatic latent image and a developing device 17 constituted to include a developing sleeve (developer carrier) 6 carrying toner (developer) 8 and an elastic rubber blade (layer thickness regulating member) 5 for regulating the layer thickness of the toner 8, an electrode plate 31 is provided in a part facing the developing sleeve 6 between a position where the photoreceptive drum 2 faces the developing sleeve 6 and the part where the elastic rubber blade 5 is abutted against the developing sleeve 6, in the rotational direction of the sleeve 6, to form a vibrating electric field between the electrode plate 31 and the sleeve 6. Thus, after a developing process is completed, the vibrating electric field formed between the electrode plate 31 and the sleeve 6 is exerted on a toner layer, to rearrange the toner 8, so that friction in a nondeveloping part and a developing part can be suppressed lower than that in a conventional manner.

10. 发明专利

JPH08202152A DEVELOPING DEVICE 失效
公开(公告)号：JPH08202152A
公开(公告)日：1996-08-09
申请号：JP2724695
申请日：1995-01-24
申请人： CANON KK
发明人： DOMON AKIRA , KINOSHITA MASAHIDE , NAKAZONO YUSUKE , SAITO MASANOBU
IPC分类号： G03G15/09 , G03G15/08
摘要： PURPOSE: To prevent the leakage of a developer from both end parts of a developer carrier by setting the part facing the developer carrier of a toner sealing member, so as to be in an inner part in the longitudinal direction of the developer carrier, as it goes to the upstream side in the rotational direction of the developer carrier. CONSTITUTION: The face facing a developing sleeve 3 of a magnetic body 6 is magnetized by the magnetic force of a magnet roller 4 arranged inside the developing sleeve 3, a magnetic circuit is formed between the magnet roller 4 and the magnetic body 6 and a magnetic field is concentrated between the magnetic body 6 and the developing sleeve 3, to form a magnetic brush with toner between the magnetic body 6 and the sleeve 3. Then, the magnetic brush therebetween is formed to go inward in the longitudinal direction of the sleeve 3 as well. Therefore, the toner moved to both ends of the sleeve 3 is brought back to the inner part in the longitudinal direction of the sleeve 3, to be guided by the magnetic brush.

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