专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明专利

JPH09106172A NONMAGNETIC ONE-COMPONENT DEVELOPING DEVICE 失效
公开(公告)号：JPH09106172A
公开(公告)日：1997-04-22
申请号：JP26262195
申请日：1995-10-11
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SHIMAZAKI HIROMITSU , TSURU TETSUHIRO , TAGUCHI HIROCHIKA , NODA KAZUHIKO , GOTO YOSHIHIRO
IPC分类号： G03G15/06 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a nonmagnetic one-component developing device having a uniform image characteristic and excellent reliability with less influence of an environmental change by reducing the unevenness of the electrostatic charge quantity of toner on a developing roller and the layer thickness of the toner to the developing roller due to variations of temperature and humidity. SOLUTION: The nonmagnetic one-component developing device 1 is provided with the developing roller 8 whose surface has a formed nonmagnetic one- component toner layer and to which a developing bias voltage is applied, a toner supplying roller 10 disposed in contact with the developing roller 8, in its rear and rotated to supply the toner 6 to the roller 8 and a developing blade 13 disposed in the upper part of the roller 8 and coming into press-contact with the roller 8, to regulate a toner quantity. Further, the developing device 1 is provided with toner supplying roller bias supply 1A as a constant current power source for applying a constant current between the toner supplying roller 10 and the developing roller 8, to obtain the uniform image characteristic and high reliability.

22. 发明专利

JPH0990723A NONMAGNETIC SINGLE COMPONENT DEVELOPING DEVICE 失效
公开(公告)号：JPH0990723A
公开(公告)日：1997-04-04
申请号：JP25066295
申请日：1995-09-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TSURU TETSUHIRO , SHIMAZAKI HIROMITSU
IPC分类号： G03G15/06
摘要： PROBLEM TO BE SOLVED: To provide a nonmagnetic single component developing device by which a uniform image characteristic can be obtained and which is excellent high image quality and high resolution by eliminating both reduction in the image rear end concentration and reduction in the image tip concentration. SOLUTION: A nonmagnetic single component developing device is provided with a developing roller 9 where a layer of toner 7 being a nonmagnetic single component developer is formed on a surface and on which developing bias voltage is impressed, a toner supply roller 10 which is arranged in contact in a rear part of the developing roller 9 and rotates/replenishes the toner 7 on/to the developing roller 9 and a toner regulating blade 11 to regulate a toner quantity by being brought into pressure contact with the developing roller 9. The toner supply roller 10 is composed of a conductive member, and is provided with a toner supply roller bias power source 1A to impress AC voltage on the toner supply roller 10, and the magnitude of developing bias voltage is set in VB (V), the magnitude of inter-peak voltage of AC voltage is set in VP- P (V), and the roller is constituted so as to satisfy the relationship of |VP- P|>2|VB|.

23. 发明专利

JPH0943978A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH0943978A
公开(公告)日：1997-02-14
申请号：JP19016595
申请日：1995-07-26
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NODA KAZUHIKO , SHIMAZAKI HIROMITSU , GOTO YOSHIHIRO , TSURU TETSUHIRO , YASUDA HIDEKI
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an image forming device in which no white streaks appear in an image, by equipping a film which comes into contact with a developing roller on the downstream side along the rotational direction of the developing roller relative to a reprenishing roller for supplying the developing roller with toner. SOLUTION: A film 11 which comes into contact with a developing roller 8 is equipped on the upstream side along the rotational direction of the developing roller 8 relative to a layer thinning blade 10 for thinning toner on the developing roller 8, and at the same time, on the developing roller 8 the downstream side along the rotational direction of the developing roller 8 relative to a reprenishing roller 9 for supplying the developing roller 8 with toner. Soft coagulation of toner, before it reaches the layer thinning blade 10, is shattered to pieces by the toner coagulation sticking preventing film 11 and therefore the toner is prevented from sticking to the layer thinning blade 10. Accordingly, white blemishing can be prevented from appearing in an image by equipped the toner coagulation sticking preventing film 11 which comes into contact with the developing roller 8.

24. 发明专利

JPH08328400A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH08328400A
公开(公告)日：1996-12-13
申请号：JP12870995
申请日：1995-05-29
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TSURU TETSUHIRO , SHIMAZAKI HIROMITSU , GOTO YOSHIHIRO , NODA KAZUHIKO , YASUDA HIDEKI
IPC分类号： G03G15/16
摘要： PURPOSE: To provide an image forming device capable of preventing the rise of transfer voltage without damaging transfer property even if resistance of a transfer roller is increased due to an environment and a production process, by performing constant current control for a transfer bias power source, in the roller transfer system. CONSTITUTION: This image forming device is provided with an electrostatic latent image carrier 1, an exposure part for forming the electrostatic latent image by irradiating a surface of the electrostatic latent image carrier 1 with exposure light beams 4, the developing part for turning the electrostatic latent image to the toner image by arranging the toner thin layer formed on the developing roller 5 surface in contact with or close to the electrostatic latent image carrier surface, and a transfer part for transferring the toner image onto a recording paper 15. The electrostatic latent image is turned to the toner image by the developing part, while the toner image on the electrostatic latent image carrier is transferred on the recording paper 15 by the transfer part, applying the roller transfer system with use of the transfer roller 20, and moreover the transfer bias impressed to the transfer roller 20 is applied with the constant current control, and a conductive member 25 is provided on a position contacting to the transfer paper on the front side or rear side of the transfer roller 20.

25. 发明专利

JPH08327935A SCANNING OPTICAL DEVICE 失效
公开(公告)号：JPH08327935A
公开(公告)日：1996-12-13
申请号：JP13553895
申请日：1995-06-02
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： GOTO YOSHIHIRO , SHIMAZAKI HIROMITSU , NODA KAZUHIKO , TSURU TETSUHIRO , YASUDA HIDEKI
IPC分类号： B41J2/44 , G02B26/10 , G02B26/12
摘要： PURPOSE: To provide a scanning optical device with which an improvement in the plane tilt correction effect of a polygon mirror is possible. CONSTITUTION: A first imaging optical system (cylindrical lens, etc.) 24 is oscillated in the revolving shaft direction of the polygon mirror 25 by a driving device 62 according to the moving quantity calculated in a controller 61 in accordance with the plane tilt quantity of the reflection surface 26 of the polygon mirror previously detected by a detector 52. This moving quantity has the relation of the synthesized waveform of the trigonometric function Σan .sin(Nn .θ) (where an : real number, Nn : natural number). The spread of the incident luminous flux from the reflection surface 26 of the polygon mirror to the second imaging optical system 27 is made equal to the spread before the occurrence of the plane tilt of the reflection surface 26 of the polygon mirror and the plane tilt correction effect of the reflection surface 26 of the polygon mirror 25 by the second imaging optical system 27 is improved, and good printing images can be obtd.

26. 发明专利

JPH08292595A ELECTROPHOTOGRAPHIC TONER 失效
公开(公告)号：JPH08292595A
公开(公告)日：1996-11-05
申请号：JP9917195
申请日：1995-04-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SHIMAZAKI HIROMITSU , DOI OSAMU , NODA KAZUHIKO , TSURU TETSUHIRO
IPC分类号： G03G9/08
摘要： PURPOSE: To obtain a toner having both of cleaning property of an irregular toner and transfer property of a spherical toner and to obtain an image of high resolution and high image quality with stable print quality by mixing an irregular toner and a spherical toner to constitute the toner. CONSTITUTION: This electrophotographic toner is transferred to an electrostatic latent image formed on an electrostatic latent image holding body to form a visible image. The toner consists of a mixture of an irregular toner and a spherical toner. The spherical toner means that the toner particles satisfy the condition of 1.0

27. 发明专利

JPH08271823A SCANNING OPTICAL DEVICE 失效
公开(公告)号：JPH08271823A
公开(公告)日：1996-10-18
申请号：JP7749495
申请日：1995-04-03
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： GOTO YOSHIHIRO , SHIMAZAKI HIROMITSU , DOI OSAMU , NODA KAZUHIKO , TSURU TETSUHIRO , YASUDA HIDEKI
IPC分类号： G02B26/12 , G02B26/10
摘要： PURPOSE: To prevent noise and the contamination of the deflecting and reflecting surface of a light deflector at the time of rotating a polygon mirror by covering the entire deflecting and reflecting surface with light transmissive resin. CONSTITUTION: The periphery of the deflecting and reflecting surface 4 of the polygon mirror 3 is spherically covered with the light transmissive resin 14. The mirror 3 is positioned at the center of the resin 14. The mirror 3 is fixed on a shaft 15 supported by a motor 16. By such constitution, the flow of air on the surface 4 of the light deflector becomes smooth, so that a wind whistle is prevented because the air is cut by the angle part of the surface 4, and the surface 3 of the mirror 3 is prevented from being stained by dust in the air caused by the turbulent flow of the air occurring behind the angle part of the surface 4 and from being bedewed because dew is condensed by the change of air density in the turbulent flow at the time of rotating the mirror 3.

28. 发明专利

JPH086378A NONMAGNETIC ONE-COMPONENT DEVELOPMENT ROLLER 失效
公开(公告)号：JPH086378A
公开(公告)日：1996-01-12
申请号：JP13553794
申请日：1994-06-17
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SHIMAZAKI HIROMITSU , DOI OSAMU , NODA KAZUHIKO , TSURU TETSUHIRO , YAMAGUCHI MINORU
IPC分类号： G03G15/08 , F16C13/00
摘要： PURPOSE:To provide a small nonmagnetic one-component development roller capable of preventing its creep deformation and obtaining a good noiseless image, excellent in reliability and manufacturing workability and mass productivity, and suitable for a process cartridge at a low cost. CONSTITUTION:This nonmagnetic one-component development roller 5 is provided with a shaft section 5a, an elastic synthetic resin layer 5b formed around the shaft section 5a, and a hard synthetic resin layer 5c laminated on the surface of the elastic synthetic resin layer 5b.

29. 发明专利

JPH05158335A ONE-COMPONENT DEVELOPING DEVICE 失效
公开(公告)号：JPH05158335A
公开(公告)日：1993-06-25
申请号：JP32356891
申请日：1991-12-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SHIMOKAWA TAKUO , TSURU TETSUHIRO , MIZOGUCHI YOSHIHIRO
IPC分类号： G03G15/08
摘要： PURPOSE:To reduce the frictional resistance of an elastic developing roller with a toner regulating blade, a photosensitive body and a recovery seal, etc., which are arranged in contact with the developing roller by forming a toner layer on the surface of the elastic developing roller from the beginning of producing a developing device. CONSTITUTION:The toner layer 17 is formed on the surface of the elastic developing roller 1 which carries toner 7 to the surface of the photosensitive body 5 from the time when the device is not used. By thus forming the toner layer 17 on the periphery of the roller 1, the particles of the toner 7 lie between the roller 1 and the toner regulating blade 4, the photosensitive body 5, the recovery sheet 6, and a toner replenishing roller 2 which contact elastically with the roller 1. Therefore, in the case that the particles of the toner do not exist, the sum of the rolling friction of the toner 7 with the roller 1 and the toner 7 with the respective contact members is obtained though sliding friction is obtained between the roller 1 and the respective contact members, so that the initial driving torque of the developing device immediately after attaching an unused developing device to device main body is made small.

30. 发明专利

JPH0535097A RESIDUAL TONER DETECTING DEVICE 失效
公开(公告)号：JPH0535097A
公开(公告)日：1993-02-12
申请号：JP18736691
申请日：1991-07-26
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TSURU TETSUHIRO , EJIMA YOSHINORI , SHIMOKAWA TAKUO , MIZOGUCHI YOSHIHIRO
IPC分类号： G03G15/08
摘要： PURPOSE:To detect residual toner and simultaneously, the presence of a developing unit, in a residual toner detecting device detecting the residual toner inside the developing unit attachably/detachably provided on an electrophotographic device. CONSTITUTION:The residual toner detecting device has a constitution so as to be provided with a toner sensor composed of light emitting and receiving elements disposed on the main body of the electrophotographic device, a toner detecting window 9 disposed on the developing unit, 2 member 10 removing toner sticking to the toner detecting window 9, and a means detecting/ discriminating the output pattern of the toner sensor, and the presence of the toner 3 and the developing unit can be detected with three patterns of the output of the toner sensor.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式