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1. 发明专利

JP2002006632A ELECTROPHOTOGRAPHIC DEVICE 失效
公开(公告)号：JP2002006632A
公开(公告)日：2002-01-11
申请号：JP2000188906
申请日：2000-06-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KOMAGINE HIROSHI , HAYASHI KAZUMASA , YUASA YASUHITO
IPC分类号： G03G9/08 , G03G9/087 , G03G9/097 , G03G15/06 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an electrophotographic device where shaving or filming of a developing roll is not generated, with high uniformity and high image quality. SOLUTION: The device includes one component toner where an additive with a reverse polarity as the electrified polarity of a toner base is added to the toner base consisting of binding resin, charge controller and colorant, a developing roll, a contact member installed in contact with the developing roll and provided with a conductor in at least one part and a power source applying AC and DC voltage between the developing roll and the contact member.

2. 发明专利

JP2001188411A IMAGE FORMING DEVICE MEMBER AND MANUFACTURING METHOD THEREOF 失效
公开(公告)号：JP2001188411A
公开(公告)日：2001-07-10
申请号：JP37386099
申请日：1999-12-28
申请人： MATSUSHITA ELECTRIC IND CO LTD , MATSUSHITA GRAPHIC COMMUNIC
发明人： KOMAGINE HIROSHI , NIIGAE RYUICHI , TATEMATSU HIDEKI , HAYASHI KAZUMASA , TAKEUCHI KEIZO
IPC分类号： G03G15/02 , C08L83/04 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To eliminate the problem of the soiling of a photoreceptor due to silicone oil bled from a member in an electrophotographic image forming device member such as a roller or a blade for electrification, developing and transfer for which silicone rubber is used. SOLUTION: After an image forming device member is molded by using a silicone rubber material, the image forming device member is washed and processed with a solvent to dissolve the silicone oil, so that the silicone oil existing at the image forming device member is removed.

3. 发明专利

JPH09134044A COLOR ELECTROPHOTOGRAPHIC DEVICE 失效
公开(公告)号：JPH09134044A
公开(公告)日：1997-05-20
申请号：JP29072895
申请日：1995-11-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HAYASHI KAZUMASA , TERADA HIROSHI , YAMAMOTO HAJIME , TOYODA AKINORI , KOMAGINE HIROSHI
IPC分类号： G03G15/00 , G03G15/01
摘要： PROBLEM TO BE SOLVED: To provide, without being affected by an irregularity in the electrostatic characteristic of the photoreceptor of each of image forming units, a color image which is stable all the time, to make halftone reproducibility high, and to facilitate maintenance, in a color electrophotographic device having four image-forming units. SOLUTION: The four image-forming units 1B, 1Y, 1M, and 1C, each of which has a charge roller, the photoreceptor 9, a developing roller 19 and so on and forms a toner image whose color is different from those of the others are placed into an image forming position 50 in order, a patch image is formed onto the photoreceptor 9 of each of the image forming units and transferred to an intermediate transfer belt 32, and the density of each patch image is detected by a toner concentration sensor 61. Then, conditions for latent-image formation in each image forming unit are determined, and a toner image in each color is formed using the determined conditions.

4. 发明专利

JPH06208304A ELECTROPHOTOGRAPHIC DEVICE 失效
公开(公告)号：JPH06208304A
公开(公告)日：1994-07-26
申请号：JP377993
申请日：1993-01-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KOMAGINE HIROSHI , TERADA HIROSHI , YAMAMOTO HAJIME , HAYASHI KAZUMASA , AIZAWA MASAHIRO
IPC分类号： G03G15/09 , G03G15/095
摘要： PURPOSE:To prevent the stripe of an image or the unevenness of development caused by the defective recovery of toner by sticking developer to an eletrostatic latent image holding body having a fixed magnet, carrying and feeding it to an electrode roller part impressing AC bias thereon and removing toner in a non-image part by electrostatic force and magnetic force. CONSTITUTION:An electrostatic latent image is formed by irradiating a photosensitive body 14 with a laser beam 18, and magnetic component toner is stuck to the image by the magnetic force of the magnet 15 in the photosensitive body 14 in a developer storage 19 Then, the photosensitive body 14 is allowed to pass before an electrode roller 21. A toner layer moves between the photosensitive body 14 and the roller 21, and the toner in the non-image part is gradually shifted to the roller 21 side, then a toner image inverted from negative to positive remains only in an image part on the photosensitive body 14. The toner stuck to the roller 21 forms a magnetic brush along magnetic field in the peripheral direction of the roller 21 by the magnet 22 and wholy fed as the magnetic brush by frictional force by the rotation of the roller 21 scraped by a scraper 24, and restored to the developer storage 19, then the roller 21 is used for next image forming again.

5. 发明专利

JPH04208943A ONE-COMPONENT NONMAGNETIC DEVELOPER 失效
公开(公告)号：JPH04208943A
公开(公告)日：1992-07-30
申请号：JP34087990
申请日：1990-11-30
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HAYASHI KAZUMASA , KOMAGINE HIROSHI , NAGASE HISANORI
IPC分类号： G03G9/08
摘要： PURPOSE:To obtain a developer having a long service life, guaranteeing prescribed image density over a long period of time and not causing an image noise due to the aggregation of silica by specifying the relation between the average particle size of a base and the amt. of silica added. CONSTITUTION:When a one-component nonmagnetic developer is triboelectrically charged by carrying with roll members, fed to a developing roll, pressed into a thin film with an elastic member and used for development, silica is added to the developer so as to satisfy an inequality 1/rX5.9

6. 发明专利

JP2003084563A Layer regulation member, layer forming device and image forming apparatus 审中-公开
标题翻译：层次调节成员，层形成装置和图像形成装置
公开(公告)号：JP2003084563A
公开(公告)日：2003-03-19
申请号：JP2001273122
申请日：2001-09-10
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： KOMAGINE HIROSHI , HAYASHI KAZUMASA , TSUJIMOTO TAKAHIRO
IPC分类号： G03G9/08 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a developing device forming a uniform toner layer with small pressure force by a layer regulation member with a simple constitution. SOLUTION: In the layer regulation member which is abutted on a carrier carrying powder and forms a thin layer of the powder on the carrier by making relative movement with the carrier, the layer regulation member is constituted of a plate shaped member and is formed so that each ridge line is in parallel to each other and each ridge line is bent so that they exist on the opposite surface of the layer regulation member in the vicinity of the abutted part on the carrier.
摘要翻译：要解决的问题：以简单的结构，通过层调节构件提供以小的压力形成均匀的调色剂层的显影装置。解决方案：在与承载粉末载体抵接的层调节件中，通过与载体相对运动在载体上形成薄层粉末，层调节构件由板状构件构成，形成为每个脊线彼此平行并且每个脊线被弯曲，使得它们存在于层调节构件的在载体上的邻接部分附近的相对表面上。

7. 发明专利

JPH10319665A COLOR ELECTROPHOTOGRAPHIC DEVICE 失效
公开(公告)号：JPH10319665A
公开(公告)日：1998-12-04
申请号：JP13015597
申请日：1997-05-20
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KOMAGINE HIROSHI , HAYASHI KAZUMASA , TOYODA AKINORI , ONO TADAAKI
IPC分类号： G03G15/01 , G03G15/08 , G03G21/18
摘要： PROBLEM TO BE SOLVED: To provide a color electrophotographic device capable of saving resources by making a service life prolonged, a running cost lowered, and waste toner reduced, in a small size, at high speed, through simple constitution that is to say, providing a path spatially connecting the waste toner box with a development hopper. SOLUTION: As for this device, the image forming unit is provided with an electrifying device 10, an organic photoreceptor 9 forming the toner image, the development hopper 14 for gathering the toner, and the waste toner box 51 for gathering the waste toner recovered by a cleaning blade 27. The plural image forming unit is respectively arrayed in a annular shape and a whole body is made possible to rotate as one body, and the path 52 spatially connecting the waste toner box 51 with the development hopper 14 is disposed. Thus, the totter is allowed to pass through the path 52, and the toner is made possible to freely shift between the development hopper 14 and the waste toner box 51, therefore the waste toner becomes available for developing again.

8. 发明专利

JPH10153910A DEVELOPING DEVICE AND ROTARY DEVELOPING UNIT USING THE SAME 失效
公开(公告)号：JPH10153910A
公开(公告)日：1998-06-09
申请号：JP31250096
申请日：1996-11-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KOMAGINE HIROSHI , HAYASHI KAZUMASA , TOYODA AKINORI
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a developing device which obtains high image quality free of density irregularity in a layer formation system of a rotary type that uses nonmagnetic toner. SOLUTION: This developing device has a developing roller 20 which rotates in a specific direction while holding nonmagnetic toner on it and is composed of an elastic member, a rotary toner-layer-regulating member 22 in contact with the surface of the developing roller 20 and, regulates the toner layer by rotating in a direction opposite that of the rotation of the developing roller 20 in a contact part, a scraper 23 which scrapes toner on the rotary toner-layer- regulating member 22 by its contact with the member 22, and a photoreceptor 12 set in contact with the surface of the developing roller 20. When the amount of the engagement of the developing roller 20 in the rotary toner-layer-regulating member 22 is A and the amount of the engagement of the developing roller 20 in the photoreceptor 12 is B, their relationship is set to A>=B.

9. 发明专利

JPH09244335A COLOR ELECTROPHOTOGRAPHIC DEVICE AND IMAGE FORMING UNIT 失效
公开(公告)号：JPH09244335A
公开(公告)日：1997-09-19
申请号：JP5747596
申请日：1996-03-14
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HAYASHI KAZUMASA , TOYODA AKINORI , KOMAGINE HIROSHI
IPC分类号： G03G15/01 , G03G15/16 , G03G21/18
摘要： PROBLEM TO BE SOLVED: To stably realize the optical static elimination at a low cost and to provide a stable color image with simple constitution by providing an optical static eliminating means to realize the optical static elimination to an electrostatic image carrier at the position between a cleaning means and a charging means. SOLUTION: Four sets of fan-shaped image forming units are arranged in an annular manner at a central part of a device. Each image forming unit is provided with a charging means 10, and electrostatic image carrier 9, a developing means 19, and a cleaning means 27, and a toner image of different colors is formed on the electrostatic image carrier 9. An LED optical static eliminating means 71 to realize the optical static elimination of the electrostatic image carrier 9 is provided at the position between the cleaning means 27 and the charging means 10. The charging characteristic of the electrostatic image carrier 9 is stabilized, the irregular density in one screen of the color image is reduced, and the secular stability of the whole device is improved. Similar effect can be obtained with a halogen lamp, etc., as the optical static eliminating means 71 in place of an LED array.

10. 发明专利

JPH086390A IMAGE FORMING METHOD AND DEVICE 失效
公开(公告)号：JPH086390A
公开(公告)日：1996-01-12
申请号：JP13296994
申请日：1994-06-15
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HAYASHI KAZUMASA , OGAWA KATSUTOSHI , KOMAGINE HIROSHI
IPC分类号： G03G15/08
摘要： PURPOSE:To provide an image invariably having a uniform line width vertically and horizontally by controlling the laser radiation time in the unit as one picture element. CONSTITUTION:A toner 51 is indiscriminately fed to the charge pattern of an electrostatic image holding member 11, and the unnecessary toner is removed by a developer removing member 54 rotated in the opposite direction to the electrostatic image holding member 11 to form the final image in this method. A laser beam 13 has the resolution of 400 dot/in., and the beam diameter is 90mum in the main scanning direction and 100mum in the auxiliary scanning direction at the 13.5% position of the maximum light quantity. A laser exposure radiation time control circuit 26 can control the laser radiation time from 40% to 100% for each picture element, and the line width is reduced as the radiation time is reduced. When the laser exposure radiation time control circuit 26 is operated and the radiation time for the unit picture element is changed, the line width of vertical lines and horizontal lines can be made uniform.

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