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1. 发明专利

JP2002132034A DEVELOPING DEVICE, PROCESS CARTRIDGE AND IMAGE FORMING DEVICE 失效
公开(公告)号：JP2002132034A
公开(公告)日：2002-05-09
申请号：JP2000319472
申请日：2000-10-19
申请人： CANON KK
发明人： MIYAMOTO JUN , MIURA KOJI
IPC分类号： G01F23/28 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a developing device capable of attaining the reduction of the number of parts, the subsequent cost reduction, and the improved reliability and assemblability. SOLUTION: For the developing device, provided with optical detection system developer remaining quantity detecting light transmissive windows 14a and 14b, rib-shaped light guides (rib) 14aL1 to 14aL3, and 14bL1 to 14bL3 are planted integrally on the light transmissive windows 14a and 14b, and the leading end faces of the light guides 14aL1 to 14aL3 and 14bL1 to 14bL3 are inclined, so that the light may be totally reflected. By having such a constitution that the light guides 14aL1 to 14aL3 and 14bL1 to 14bL3 are planted integrally on the light transmissive windows 14a and 14b, it becomes unnecessary to install the light guide which is required conventionally, so that reduction in the number of components, the subsequent cost reduction and the improved reliability and assemblability are attained.

2. 发明专利

JP2001318524A METHOD FOR DETECTING RESIDUAL DEVELOPER QUANTITY, DEVELOPING DEVICE, PROCESSING CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE 失效
公开(公告)号：JP2001318524A
公开(公告)日：2001-11-16
申请号：JP2001034289
申请日：2001-02-09
申请人： CANON KK
发明人： MIURA KOJI , SUZUKI TATSUYA , MIYAMOTO JUN
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a method for detecting the residual developer quantity of the developer T from the stage that the developer T is in the developer containing part 16 and a developing device, a processing cartridge, and an electrophotographic image forming device. SOLUTION: The residual quantity of the developer T is detected one after another, by transporting the developer T to the position where light L to enter from a first light transmission opening 14a in the developer containing part 16 by a developer transporting member 12 and based on the time in which the developer T transported by the developer transporting member 12 interrupts the above light L.

3. 发明专利

JP2001125363A DEVELOPING DEVICE, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE 失效
公开(公告)号：JP2001125363A
公开(公告)日：2001-05-11
申请号：JP30608799
申请日：1999-10-27
申请人： CANON KK
发明人： MIURA KOJI , MIYAMOTO JUN , SUZUKI TATSUYA
IPC分类号： G01N21/15 , G01N21/59 , G03G15/08 , G03G21/18
摘要： PROBLEM TO BE SOLVED: To provide a developing device having high degree of freedom in terms of the arrangement of a light emitting part and a light receiving part and having high latitude of design related to a developer container, in the constitution of light transmission system toner remaining quantity detection. SOLUTION: 1st and 2nd stirring members 12 and 13, and 1st and 2nd light transmission windows for detecting the remaining toner quantity 14a and 14b are arranged in the developer container 16, and only the 1st light transmission window 14a positioned near the light emitting part 15a is wiped up and cleaned by the 1st stirring member 12 arranged near the developing roller 10, and only the 2nd light transmission window 14b positioned near the light receiving part 15b is wiped up and cleaned by the 2nd stirring member 13 positioned away from the roller 10. An optical axis for transmitting the toner remaining quantity detecting light is formed by the 1st window 14a and the 2nd window 14b.

4. 发明专利

JPH1173019A DEVELOPMENT FRAME, AND DEVELOPMENT CARTRIDGE 失效
公开(公告)号：JPH1173019A
公开(公告)日：1999-03-16
申请号：JP18615598
申请日：1998-07-01
申请人： CANON KK
发明人： YOKOMORI KANJI , SUGANO KAZUHIKO , MIURA KOJI
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To miniaturize a development frame and a development cartridge, and efficiently store the toner by specifying the construction of the development frame and the development cartridge. SOLUTION: A development frame 63A is provided with a development roller 12, a toner storage part 63a, and a coating roller 19. A toner supply opening 63Ae to supply the toner stored in the toner storage part 63a to the development roller 12, and a development roller mounting part to mount the development roller 12 along the toner supply opening are provided. Connection surfaces 63n which are connection surfaces to be connected to a toner frame 63B having the toner storage part 63a and provided on one end side and the other end side in the shorter side direction of the toner supply opening 63Ae along the longitudinal direction of the toner supply opening 63Ae, and a projecting part provided so as to be across the connection surfaces 63n are provided. A development cartridge can be miniaturized compared with the conventional construction. More toner can be stored with the development cartridge of the same size as the conventional one.

5. 发明专利

JPH1172984A SHUTTER, DEVELOPING CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE 失效
公开(公告)号：JPH1172984A
公开(公告)日：1999-03-16
申请号：JP18615298
申请日：1998-07-01
申请人： CANON KK
发明人： YOKOMORI KANJI , SUGANO KAZUHIKO , MIURA KOJI
IPC分类号： G03G15/01 , G03G15/00 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To prevent a developing cartridge from being loaded in a wrong position of an image forming device main body by providing a developing cartridge discrimination part capable of entering a main body discrimination part when the main body discrimination part provided in the image forming device main body in order to discriminate the developing cartridge coincides with an installation position in the case of loading the developing cartridge in the image forming device main body. SOLUTION: This developing cartridge is equipped with a shutter having developing cartridge discrimination parts 64M, 64C, 64Y and 64B entering discrimination parts 11m1, 11c1, 11y1 and 11b1 provided in an image device main body in order to discriminate the developing cartridge when the installation position coincides with the discrimination parts in the case of loading the developing cartridge to any one of plural developing cartridge loading parts provided in the image forming device main body. Thus, when a user loads the developing cartridge in the cartridge loading part of the image forming device main body, the developing cartridge of another color which is not fit to the cartridge loading part is prevented from being loaded.

6. 发明专利

JPH09101668A DEVELOPER QUANTITY DETECTOR AND IMAGE FORMING DEVICE 失效
公开(公告)号：JPH09101668A
公开(公告)日：1997-04-15
申请号：JP27969995
申请日：1995-10-03
申请人： CANON KK
发明人： ARIMITSU TAKESHI , MIURA KOJI , NISHIKAMIDOKO TSUTOMU , KURIHARA SATOSHI
IPC分类号： G03G21/00 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To easily infer the end of a developer by sequentially detecting/ displaying the quantity of the developer in the developer housing part of a developing means. SOLUTION: The developer 17 is housed in the developer housing part 16 of the developing means 15 and a developer quantity position detecting member 30 is arranged in the vicinity of the top surface of the housed developer 17. Then, the developer quantity position detecting member 30 is moved according to the movement of the top surface position of the developer 17 in the developer housing part, 16, due to the consumption of the developer 17 and the position of the detecting member 30 is detected to detect the quantity of the developer 17 in the developer housing part 16.

7. 发明专利

JPH0990762A DEVELOPING DEVICE 失效
公开(公告)号：JPH0990762A
公开(公告)日：1997-04-04
申请号：JP24941695
申请日：1995-09-27
申请人： CANON KK
发明人： MIURA KOJI , SUGANO KAZUHIKO , NISHIKAMIDOKO TSUTOMU
IPC分类号： G03G15/09 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To prevent a backlash of a magnet roll as miniaturizing a developing device and reducing the number of part items by positioning the magnet roll in the thrust direction by an electrode member energizing a developing sleeve. SOLUTION: A magnet roller 2 made of an integrally molded plastic magnet rotating in one direction is disposed in a cylindrical developing sleeve 1 made of non-magnetic metal, and a flange 4b is fastened to one end of the developing sleeve 1 together with an electrode 6 and is fitted to a developing unit main body 3 via bearing member 5b. A sleeve electrode 6 fastened to the flange 4b contacts with an electrode plate 7 fastened to a holder 9b so as to supply a bias voltage to the developing sleeve 1. A protrusion 7b protruding from one part of the hole shape portion of the electrode plate 7 presses the magnet roller 2 to the holder side 9a of the other end side by the elastic force of the protrusion 7b so as to position the magnetic roller 2 in the thrust direction. Thereby, the magnet roller 2 can be held at a fixed position.

8. 发明专利

JPH0944001A TRANSFER MATERIAL GUIDE MEANS AND PROCESS CARTRIDGE 失效
公开(公告)号：JPH0944001A
公开(公告)日：1997-02-14
申请号：JP19490495
申请日：1995-07-31
申请人： CANON KK
发明人： NISHIKAMIDOKO TSUTOMU , MIURA KOJI , SUGANO KAZUHIKO
IPC分类号： G03G15/16 , G03G15/00 , G03G21/18
摘要： PROBLEM TO BE SOLVED: To smoothly feed even transfer materials of different sizes having width approximate to specified width to an image carrier by providing an oblique guide rib having an angle to the direction of conveyance of a transfer material. SOLUTION: Seven pairs of guide ribs 31 are provided at intervals in the right-and-left direction on the surface of a rush-in rib 33 on the side of a transfer material carrying path, and further the oblique guide ribs 32 obliquely laid from the lower end of the 3rd pair of guide ribs 31 to the upper edge of the 4th pair of guide ribs 31 between the 3rd and 4th pairs of guide ribs 31 when counted from the center. Even when the leading edge of the transfer material fed toward a photoreceptor drum is warped to both side parts to cause the deformation such as turning-over by the action of the rib 32, the deformation is regulated in the direction where the transfer material is made flat by the rib 32, consequently, the transfer material is smoothly transferred toward the photoreceptor drum. Therefore, the transfer material of every size can be guided smoothly toward the photoreceptor without being caught by the rib 33.

9. 发明专利

JPH0922185A DEVELOPING DEVICE, IMAGE FORMING DEVICE AND PROCESS CARTRIDGE 失效
公开(公告)号：JPH0922185A
公开(公告)日：1997-01-21
申请号：JP19613495
申请日：1995-07-07
申请人： CANON KK
发明人： NISHIKAMITOKO TSUTOMU , MIURA KOJI , SUGANO KAZUHIKO
IPC分类号： G03G21/16 , G03G15/08 , G03G21/18
摘要： PROBLEM TO BE SOLVED: To keep the hermetic sealability of the end part seal members of a developer carrier and a developing means frame by providing groove parts into which the end parts of the end part seal members are inserted in the vicinities of the end parts of the developing carrier. SOLUTION: Supporting parts 41e1 for supporting the end part seal members 45 are provided on the sides of the opening parts 41c of end part connecting parts 41e and the seal grooves 41b for accepting the end parts 45a of the end part. seal members 45 are formed on a longitudinal rib 41a, to be successive to the supporting parts 41e1 . The seal grooves 41b have the same width as that of the end part seal members 45 and are constituted so that the end parts 45a of the end part seal members 45 are inserted into the seal grooves 41b. Two opposed faces of the seal grooves 41b are in contact with side surfaces in the vicinities of the end parts 45a on the side of the longitudinal rib 41a of the end part seal members 45 respectively, to prevent the outflow of toner. Thus, the hermetic sealability of the end part seal members 45 of a developing sleeve and the developing means frame 41 can be surely held and the attachment of the end part seal members 45 to the developing means frame 41 can be facilitated.

10. 发明专利

JPH08314358A DEVELOPING DEVICE AND PROCESS CARTRIDGE 失效
公开(公告)号：JPH08314358A
公开(公告)日：1996-11-29
申请号：JP13743795
申请日：1995-05-12
申请人： CANON KK
发明人： NISHIGAMIDOKO TSUTOMU , MIURA KOJI , SUGANO KAZUHIKO
IPC分类号： G03G21/18 , F16C13/02 , G03G15/08
摘要： PURPOSE: To obtain a developing device which is simple, is constituted to allow the reduction in the size of the diameter of a developing sleeve and is capable of impressing voltage on the developing sleeve by forming one supporting member of a conductive member and disposing the conductive member in such a manner that the member comes into direct contact with a developer carrying member. CONSTITUTION: The developing sleeve 6 which is the developer carrying member is supported freely rotatably at their both ends by sleeve bearings 11, 12 which are the supporting members. The developing sleeve 6 is rotationally driven by receiving driving force at a sleeve gear 14 mounted at the end face of the sleeve. AC bias is impressed on the developing sleeve 6 at the time of image formation. The direct impression of the AC bias on the sleeve bearing 12 from the AC power feed contact 113 of the device body is made possible by forming the sleeve bearing 12 of the conductive member. Then, the impression of the voltage on the developing sleeve 6 by the simple constitution is made possible and the reduction in the diameter of the developing sleeve 6 is embodied.

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