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21. 发明专利

JPH06318022A CLEANING METHOD, ELASTIC CLEANING BLADE ATTACHING METHOD, CLEANING DEVICE, PROCESS CARTRIDGE AND IMAGE FORMING DEVICE 失效
公开(公告)号：JPH06318022A
公开(公告)日：1994-11-15
申请号：JP12322993
申请日：1993-04-28
申请人： CANON KK
发明人： SHOJI TAKEO , ADACHI HIROYUKI , NOMURA YOSHIYA , SUGIURA YOSHINORI
IPC分类号： G03G21/16 , G03G15/00 , G03G15/08 , G03G21/00 , G03G21/10 , G03G21/18
摘要： PURPOSE:To improve cleaning performance by setting an elastic cleaning blade so that it may abut on an image carrier with specified line pressure. CONSTITUTION:A cleaning device is constituted of the cleaning blade 13a which comes in contact with the surface of a photosensitive drum 9 and scrapes residual toner on the drum 9, a scooping sheet 13b which is positioned below the blade 13a in order to scoop the scraped toner and comes in contact with the surface of the drum 9, and a discharged toner receiver 13c where scooped discharged toner is accumulated. Furthermore, the form of the lower edge of the sheet 13b is made nearly the same as a form curved by drawing a mount surface 13d by means of a drawing tool. In the case the average particle size of toner is 4-7mum, the elastic cleaning blade is allowed to abut on the image carrier with abutting pressure being the line pressure of >=25gf/cm and

22. 发明专利

JPH06318017A PHOTOSENSITIVE DRUM, PROCESS CARTRIDGE AND IMAGE FORMING DEVICE 失效
公开(公告)号：JPH06318017A
公开(公告)日：1994-11-15
申请号：JP12311593
申请日：1993-04-28
申请人： CANON KK
发明人： ARAKI RYUJI , MIURA KOUJI , NOMURA YOSHIYA , KAWAGUCHI HIDESHI , MIYAKE HIROAKI , MATSUDA KENJI , SUGIURA YOSHINORI
IPC分类号： G03G21/18 , G03G15/00 , G03G21/00 , G03G21/16
摘要： PURPOSE:To miniaturize the gear of a photosensitive drum, to reduce the number of parts, to reduce cost and to eliminate the uneven pitch of the gear. CONSTITUTION:The photosensitive drum 9 is provided with a cylindrical member 9a having a photosensitive body 9b on its surface, a helical gear 9c1 installed on the member 9a, and a spur gear 9c2 installed in the member 9a, and the gears 9c1 and 9c2 are integrally molded. A reinforcing material is press-fitted in a lightening part on the inside of the bottom of a gear part 9c consisting of the gear 9c1 and the gear 9c2, furthermore, the diameter of the gear 9c1 is made larger than that of the gear 9c2, and the number of teeth of the gear 9c1 is larger than that of the gear 9c2, and the gear 9c1 is constituted to be wider than the gear 9c2.

23. 发明专利

JPH06317954A METHOD FOR ASSEMBLING IMAGE FORMING DEVICE, IMAGE FORMING DEVICE AND METHOD FOR FITTING ARMOR COVER 失效
公开(公告)号：JPH06317954A
公开(公告)日：1994-11-15
申请号：JP12322093
申请日：1993-04-28
申请人： CANON KK
发明人： SUGIURA YOSHINORI , ISHIKAWA NORIYOSHI , SETORIYAMA TAKESHI , AMASHIRO CHITOSE , HAMADA TATSUO , TSUCHITANI YOSHIRO , KUBOTA TAKESHI , MUROOKA KEN , NIIMURA TAKESHI , ADACHI NOBUKAZU , KURODA AKIRA , SUGITA SOJI , YUZA AKIRA , AZUMA JUN , NOMURA YOSHIYA
IPC分类号： B41J29/00 , G03G15/00 , G03G21/16 , G03G21/18 , H04N1/00
摘要： PURPOSE:To facilitate assembling work and to improve the accuracy of a carrying position by fitting an armor cover after a feeding unit and an electrical unit are assembled from the lower part of a frame and required members are assembled from the upper part of the frame. CONSTITUTION:A cover guide 10e is assembled from the lower part of the frame 15 first and the electrical unit 14 is assembled from the lower part thereof. Besides, the feeding unit 30 obtained by unitizing a pickup roller, a feeding gear, a carrying roller or the like is assembled. Next, a scanner unit 8e is assembled after a transfer unit constituted of a main motor 20, a transfer roller 11, a guide member 11b or the like is assembled from the upper part of the frame 15. Besides, the armor cover 16 is assembled from the upper part of the frame 15 after the required members such as a fixing means 12 is assembled. Therefore, the carrying guide part 15j of a recording medium positioned at the upper part of the unit 14 can be integrally formed with the frame 15 and positional relation between a transfer nip part and the recording medium is easily and accurately constituted.

24. 发明专利

JPH06312530A LASER SHUTTER MECHANISM, IMAGE FORMING DEVICE AND IMAGE FORMING SYSTEM 失效
公开(公告)号：JPH06312530A
公开(公告)日：1994-11-08
申请号：JP12322293
申请日：1993-04-28
申请人： CANON KK
发明人： SUGIURA YOSHINORI , ISHIKAWA NORIYOSHI , SETORIYAMA TAKESHI , AMASHIRO CHITOSE , HAMADA TATSUO , TSUCHITANI YOSHIRO , KUBOTA TAKESHI , MUROOKA KEN , NIIMURA TAKESHI , ADACHI NOBUKAZU , KURODA AKIRA , SUGITA SOJI , YUZA AKIRA , AZUMA JUN , NOMURA YOSHIYA
IPC分类号： B41J2/44 , G02B26/10 , G03G15/00 , G03G21/00
摘要： PURPOSE:To enhance safety by providing protection guide members, which perform both the protection of an actuator for driving a laser shutter that is freely opened and closed with respect to the laser light path of a laser light emitting means and the guides for a process cartridge to the actuator. CONSTITUTION:In a laser beam printer, a laser shutter 8g, which can be moved between a closing position for shielding the laser light path so as to prevent the careless leaking of the laser light and a releasing position for releasing the laser light path by the evacuation from the closing position in use, is provided in a scanner unit 8e that is the laser-light emitting means. The laser shutter 8g is pushed up to the releasing position by pushing a lever 8i with a protruding part (actuator) 1b, which is provided at the tip of a process cartridge B. At this time, two protecting guide members 8j, which also become the guides when the protruding part 1b is inserted, are provided around an insertion part 8g3, wherein the protruding part 1b is inserted. The reaching of a finger or the like into the lever 8j is blocked.

25. 发明专利

JPH06148969A PROCESS CARTRIDGE AND IMAGE FORMING DEVICE 失效
公开(公告)号：JPH06148969A
公开(公告)日：1994-05-27
申请号：JP32626392
申请日：1992-11-12
申请人： CANON KK
发明人： HIGETA AKIRA , SATO MINORU , SHISHIDO KAZUO , KOBAYASHI HIROO , MIYAKE HIROAKI , MATSUDA KENJI , NOMURA YOSHIYA
IPC分类号： B41J2/44 , B41J21/16 , G03G15/00 , G03G15/08 , G03G21/00 , G03G21/10 , G03G21/16
摘要： PURPOSE:To enable a stuck label to be peeled from a peeling part and to improve recycling efficiency when a cartridge is recycled by providing the peeling part of the label stuck on a sticking part on the outer surface of the cartridge. CONSTITUTION:The peeling part of the label 16 is provided on a rib 18. That means, the rib 18 does not continue to a rib 17 perfectly and a notch 19 is provided at one part. The notch 19 is provided in order to peel the label 16 when the used process cartridge B is recovered and recycled. That means, when a frame body is reused, parts housed in the frame body need to be removed and the stuck label 16 also need to be peeled. At this time, the corner part or the like of the label 16 cannot be directly peeled by fingers because there are the ribs 17 and 18. Besides, since the notch 19 is provided, the end part of the label 16 is peeled a little by inserting a wire or forcept from the notch 19. Then, it can be peeled by being picked up by the forceps or the fingers.

26. 发明专利

JPH0667512A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH0667512A
公开(公告)日：1994-03-11
申请号：JP23883292
申请日：1992-08-17
申请人： CANON KK
发明人： HIGETA AKIRA , MATSUDA KENJI , MIYAKE HIROAKI , SHISHIDO KAZUO , NOMURA YOSHIYA , SATO MINORU , TAKANO MANABU , GOTO MASAHIRO , KOYAMA HIROSHI , ISHIHARA TOMOJI , YOSHIHARA YOSHIYUKI , SAKURAI KAZUE , YAMAZAKI MICHIHITO , KISU HIROKI
IPC分类号： B41J19/04 , G03G15/00 , G03G15/02 , G03G21/00 , G03G21/10 , G03G21/16 , H02K5/24
摘要： PURPOSE:To prevent the generation of an electrifying noise by making an image carrier by the use of solid resin and providing a damper which absorbs the vibration of an electrifying means, and to prevent soiling of the electrifying means and the image carrier by separating them. CONSTITUTION:In order to prevent the generation of electrifying noises which result from the vibrations of the image carrier 2-1 and the electrification roller 2-50, the image carrier 2-1 is made of a solid material, so that the same effect as in the case where a vibration-proof material of the maximum width is attached to the inside of a hollow image carrier is obtained and the mass is also increased. A dynamic damper 2-52 is disposed on an electrification roller cover 2-51; thereby, when an image forming device is actuated, the damper receives the vibration of the electrification roller 2-50 via the electrification roller cover 2-51 and vibrates together. Since, in a system, the dynamic damper 2-52 is more vibratile than the electrification roller cover 2-51, the dynamic damper 2-52 vibrates and the electrification roller cover 2-51 doesn't. Therefore, the amplification of vibration resulting from transmission to other container, etc., can be prevented.

27. 发明专利

JPH05297646A 失效
公开(公告)号：JPH05297646A
公开(公告)日：1993-11-12
申请号：JP12113092
申请日：1992-04-16
申请人： CANON KK
发明人： MIYABE SHIGEO , HIGETA AKIRA , NOMURA YOSHIYA , MIURA KOJI , SATO MINORU , MATSUDA KENJI , ISOBE HIROYUKI , SHISHIDO KAZUO , KOBAYASHI HIROO
IPC分类号： G03G15/00
摘要： PURPOSE:To prevent a photosensitive drum from being damaged even if impact is somewhat exerted on a cartridge. CONSTITUTION:An opening/closing cover 4g is provided on an opening which exposes a part of the photosensitive drum 4a, and a film 4i as a protective means which enters between the photosensitive drum 4a and the developing sleeve 4c4 is fixed to the cover 4g. When the cover 4g is closed, the film 4i enters between the photosensitive drum 4a and the developing sleeve 4c4. Therefore, even if impact is somewhat exerted on the cartridge, the developing sleeve 4c4 does not damage the photosensitive drum 4a.

28. 发明专利

JPH0580601A IMAGE FORMING DEVICE AND PROCESS CARTRIDGE FREELY ATTACHABLE TO IMAGE FORMING DEVICE 失效
公开(公告)号：JPH0580601A
公开(公告)日：1993-04-02
申请号：JP6731692
申请日：1992-03-25
申请人： CANON KK
发明人： SHISHIDO KAZUO , NOMURA YOSHIYA , MATSUDA KENJI , SATO MINORU , MIYAKE HIROAKI
IPC分类号： G03G21/16 , G03G15/00 , G03G15/06 , G03G15/08 , G03G15/09 , G03G15/20 , G03G21/00 , G03G21/10
摘要： PURPOSE:To reuse the image forming device even after expiration of service life by selectively attaching an abutting member abutted to a mobile body to a first position and a second position differing from the first position. CONSTITUTION:A cleaning container 132 is provided with three holes each of 132c and 132d on both ends to have pins inserted to position a cleaning blade, the holes 132c and 132d are provided in pairs on both sides of the lengthwise direction of the blade, and the position of the holes on both ends are moved to a tip part of the blade. Then, bottom holes 132e and 132f are provided to fix the cleaning blade with self tapping screws. For example, when the cleaning blade recovered from the market is to be reused, the elasticity of a polyurethane rubber part is measured, the position of the positioning pins are slid to the outer side according to creep, and the blade is attached lower against the cleaning device 132. That is, attaching positions are varied with a new blade and a reused one.

29. 发明专利

JPH04326381A DEVELOPING DEVICE 失效
公开(公告)号：JPH04326381A
公开(公告)日：1992-11-16
申请号：JP12280091
申请日：1991-04-26
申请人： CANON KK
发明人： NOMURA YOSHIYA , SHISHIDO KAZUO , SATO MINORU , MIYAKE HIROAKI , MATSUDA KENJI , SASAKI SHINICHI
IPC分类号： G03G15/08
摘要： PURPOSE:To offer a low cost developing device in which a developer carrier is rotated without causing uneven rotation. CONSTITUTION:The device is provided with a drive force transmitting means 30 for rotating the developer carrier 21, with which an image carrier 1 press- contacts and which follows the carrier 1 and is rotated by frictional force accompanied with the rotation of the image carrier 1. Since the carrier 21 is rotated by following the carrier 1 through the frictional force, it is rotated more smoothly than it is rotated through a gear, etc., and the uneven rotation is not caused in its rotation. Then, the means 30 has only to transmit the frictional force to the carrier 21, so that its constitution is simple in comparison with the gear, etc., and the cost of the device is reduced as much as by the simplification of the constitution.

30. 发明专利

JPH04320281A ELECTROSTATIC CHARGER 失效
公开(公告)号：JPH04320281A
公开(公告)日：1992-11-11
申请号：JP11550891
申请日：1991-04-19
申请人： CANON KK
发明人： SHISHIDO KAZUO , MIYAKE HIROAKI , NOMURA YOSHIYA , HIGETA AKIRA
IPC分类号： G03G15/02
摘要： PURPOSE:To prevent the occurrence of a failure in the electrifying-processing of a body to be electrified caused by a failure in the conduction of a power feeding path by directly feeding power to an end surface in the rotary shaft of an electrifying member which comes into contact with the body to be electrified to electrify it, and freely rotates. CONSTITUTION:In a laser beam printer using, for instance, a process unit attaching/detaching type electrophotographic process, an electrifying roller 30 as the electrifying member is contacted with a photosensitive body 5 with prescribed pressure in such a manner that both end parts of a core metal 31 are supported by bearings 35 respectively, and these both bearings 35 are biased in the direction of the photosensitive body 5 by a spring 36 shrunk/provided between the bearing and a process unit frame body. The top end side 40a of an electrode 40 is brought into contact with an end surface 31a in the thrust direction of the core metal 31 of the electrifying roller 30 with constant pressure by the elastic force of the electrode 40. Therefore, when a process unit is fitted to a printer main body, the power receiving terminal 41a of a process unit side comes into contact with the power feeding terminal 41b of a printer main body side, to directly feed the power to the electrifying roller 30.

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