专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2000315018A IMAGE FORMING DEVICE 失效
公开(公告)号：JP2000315018A
公开(公告)日：2000-11-14
申请号：JP2000123021
申请日：2000-04-24
申请人： TOSHIBA CORP , TOSHIBA TEC KK
发明人： KIKUCHI KAZUHIKO , YOSHIDA MINORU , YAMAGUCHI MASAO , WATANABE TAKESHI , HIRANO KOJI
IPC分类号： G03G21/00 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To prevent developer from soiling transfer material and the inside of a device even when the developer drops from an image disturbing means. SOLUTION: This device is equipped with a photoreceptor 1 on which an image is carried, a latent image forming means 4 forming a latent image on the photoreceptor 1, a developing device for developing the latent image formed by the means 4 by supplying the developer, a transfer means 6 transferring the image developed by the developing device to the transfer material, the image disturbing means 42 making the developer remaining on the photoreceptor 1 non-pattern by sliding in contact therewith after the image is transferred by the means 6, and a toner drop preventing member 23 receiving the developer scraped by the means 42's sliding in contact with the photoreceptor 1.

2. 发明专利

JP2000047483A IMAGE FORMING DEVICE 失效
公开(公告)号：JP2000047483A
公开(公告)日：2000-02-18
申请号：JP20993498
申请日：1998-07-24
申请人： TOSHIBA CORP
发明人： MIZUTA KATSUNORI , HIRANO KOJI
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To efficiently suck a scattered toner without pulluting a machine body and to form a good image by providing a developer sucking device having a sucking wind velocity controller for changing the sucking velocity in a development state and in a nondevelopment state on a developing device. SOLUTION: This device 100 is provided with a developer feed roller 3a feeding a developer to a developing roller 1, a stirring roller 3b, a slit 5 provided below the developing roller 1 as a suction port, a sucking duct 4 provided below a developer casing 7 from the slit 5, and a sucking device having a toner filter 14, an ozone filter 13 and a sucking fan 12 provided in sequence at the end section of the sucking duct 4. The motor of the sucking fan 12 and a motor drive circuit are connected to a controller controlling the voltages impressed to various sections. When the fan voltage impressed to the sucking fan 12 is controlled, the sucking wind velocity is changed in a development state and in a nondevelopment state.

3. 发明专利

JPH11174864A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH11174864A
公开(公告)日：1999-07-02
申请号：JP34234597
申请日：1997-12-12
申请人： TOSHIBA CORP
发明人： HIRANO KOJI
IPC分类号： G03G15/00 , G03G15/16 , G03G21/00
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of letter scattering phenomenon and middle missing phenomenon and to enhance display definition by installing means such as a constant voltage power source for impressing a voltage to a charge imparting means and a control means for controlling the constant voltage power source so that the appropriate voltage may be impressed on the charge imparting means in accordance with the thickness of a transferred body. SOLUTION: As for the input of a controller 37 for controlling a laser exposure system copying device, the measurement results from a current monitoring device 38 which is arranged between a constant voltage transformer 36a and a transfer roller 32 and for measuring the current value flowing into the transfer roller 32 are inputted. The thickness of the sheet paper P passing through the transfer roller 32 is judged by the controller 37 in accordance with the current value inputted from the current monitoring device 38. And, the appropriate impressing voltage value is set through a ROM 40 by the controller 37 in accordance with the current value from the device 38, then, the voltage adjuster 36b is controlled by the controller 37, and the voltage impressed by the constant voltage transfer 36a is switched. Thus, the appropriate voltage is impressed on the transfer roller 32 by the constant voltage power source 36.

4. 发明专利

JPH1077977A SCROLL TYPE COMPRESSOR 失效
公开(公告)号：JPH1077977A
公开(公告)日：1998-03-24
申请号：JP23304296
申请日：1996-09-03
申请人： TOSHIBA CORP
发明人： KAWABE ISAO , CHIYOTANI TSUKASA , YAJIMA TOSHIYA , HIRANO KOJI
IPC分类号： F04C18/02
摘要： PROBLEM TO BE SOLVED: To provide a scroll type compressor in which an abnormal sound and a defective compression are not generated by sealing a compression space by pushing a fixed scroll against a turning scroll stably, in the transition state of the usual operation time, start time and a frost removing time. SOLUTION: This compressor is provided with a small hole 75c for communicating a suction space Q with a discharge space U, a pressing plate 75 in which main discharge port 75d, 75d is formed, a moving ring 73 for expanding the area of the small hole 75c and main discharge port 75d, 75d by installing movably in an axial direction in response to the discharge pressure in the discharge space U of a compressed gas compressed by a compression part 60 and becoming from a contact state to a separation state for the pressing plate 75 and an elastic member 74 energized in the direction for separating the moving ring 73 from he fixed scroll.

5. 发明专利

JPH09127772A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH09127772A
公开(公告)日：1997-05-16
申请号：JP28076895
申请日：1995-10-27
申请人： TOSHIBA CORP
发明人： HIRANO KOJI
IPC分类号： G03G21/10 , G03G15/06 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an image forming device forming a stabilized image without having white void by reducing toner consumption by recycling toner. SOLUTION: Voltage having a reverse polarity to normal developing bias voltage is applied to the developing roller 14a of a developing device 14, so that toner agglomerate incorporated in the toner recycled by a toner recycling mechanism 20 and coarse particles are surely separated from the developing roller 14a. The toner agglomerate and the coarse particles increased in terms of acceleration with the increase of the number of times of image-forming are removed from the developing roller 14a as the time of making the voltage having the reverse polarity from the developing bias voltage applied to the developing device 14 is extended. Thus, the white void caused when an electrostatic latent image is repeatedly developed by recycling the toner by the toner recycling mechanism is prevented.

6. 发明专利

JPH0588528A DEVELOPING DEVICE 失效
公开(公告)号：JPH0588528A
公开(公告)日：1993-04-09
申请号：JP25067091
申请日：1991-09-30
申请人： TOSHIBA CORP , TOSHIBA INTELLIGENT TECH
发明人： KIKUCHI KAZUHIKO , HIRANO KOJI
IPC分类号： G03G15/08
摘要： PURPOSE:To obtain a high-grade image free from defective images, such as unequal densities and surface fogging, and to obviate the generation of the degradation in the image even in long-term use by changing the direction where a developing roller is drawn at every one time in dipping coating of the surface of an elastic material layer. CONSTITUTION:This developing device has the developing roller including a base 12a, the elastic material layer 12b formed on the outer periphery of this base 12a and a surface layer 12c formed on the surface of this elastic material layer 12b by an even number of times of dipping coating of a resin or rubber and changing the direction of drawing the developing roller at every one time. The layer thickness of the surface layer can be maintained uniformly in the longitudinal direction of the developing roller by changing the direction of drawing the developing roller at every one time of dipping coating. The high- quality image free from the unequal densities, etc., is obtd. over a long period of time.

7. 发明专利

JPH0486878A RECORDING DEVICE 失效
公开(公告)号：JPH0486878A
公开(公告)日：1992-03-19
申请号：JP20313490
申请日：1990-07-31
申请人： TOSHIBA CORP , TOSHIBA INTELLIGENT TECH
发明人： YOSHIDA MINORU , HIRANO KOJI
IPC分类号： G03G15/16
摘要： PURPOSE:To perform excellent printing without the omission of a line or a character by impressing the AC transfer bias of a proper frequency which satisfies a specified condition on a transfer means. CONSTITUTION:An electrostatic latent image is formed on a selenic photosensitive drum 1 by an exposing means. Normal developing with toner is performed by a two-component developing device 3 so as to develop the electrostatic latent image. The toner has a positive polarity and the toner image is carried to a transfer area with the rotation of the drum 1. A transfer material 4 is stocked in a cassette 5, inserted in the transfer area which is formed by the photosensitive drum 1 and a transfer roller 12 by an aligning roller 6, and the toner image is transferred to the transfer material 4 by the transfer roller. The AC bias which satisfies the following condition and biased to be positive is impressed on the driving shaft of the roller 12. Ft =20, provided that Fe(Hz) denotes the frequency of the AC bias, d(mm) denotes a nip width formed by the transfer means and the image carrier, and V(mm/sec) denotes the moving speed of the image carrier. By impressing the AC bias, the floccuration of the toner in the transfer nip is prevented and the high-quality printing without the omission of the character or the line is performed.

8. 发明专利

JPH0470683A DEVELOPING DEVICE 失效
公开(公告)号：JPH0470683A
公开(公告)日：1992-03-05
申请号：JP17881490
申请日：1990-07-06
申请人： TOSHIBA CORP , TOSHIBA INTELLIGENT TECH
发明人： YOSHIDA MINORU , HIRANO KOJI
IPC分类号： G03G15/08
摘要： PURPOSE:To prevent the conductive layer of a developing roller from being peeled and to obtain a high-definition image without a faulty part in the long term by providing an elastic layer and the conductive layer provided on the surface of the elastic layer on the developing roller and satisfying a specified relation between the elongation of the material of the elastic layer and the elongation of the material of the conductive layer. CONSTITUTION:The developing roller 12 is provided with the elastic layer 12b and the conductive layer 12c provided on the surface of the layer 12b. Supposing that the elongation of the material of the layer 12b is Le%, the elongation of the material of the layer 12c is Ll%, the relation of 0.5

9. 发明专利

JP2005017498A Image forming apparatus and method for controlling toner concentration 审中-公开
标题翻译：图像形成装置和控制浓度浓度的方法
公开(公告)号：JP2005017498A
公开(公告)日：2005-01-20
申请号：JP2003179708
申请日：2003-06-24
申请人： Toshiba Corp , Toshiba Tec Corp , 東芝テック株式会社 , 株式会社東芝
发明人： HIRANO KOJI
IPC分类号： G03G21/14 , G03G15/01 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus by which a stable output image is obtained by properly controlling toner concentration by accurately detecting the toner concentration of color developer. SOLUTION: The image forming apparatus possesses a developing device 4 storing toner where a chromatic color is given and a toner concentration detector 44 to detect the toner concentration after developing an electrostatic image by supplying the electrostatic image formed at a photoreceptor 1 with the toner, and when the toner concentration is detected by the toner concentration detector, developing bias voltage having a polarity reverse to that at a developing time is supplied to the developing device is for specified time. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种通过精确地检测彩色显影剂的调色剂浓度适当地控制调色剂浓度来获得稳定的输出图像的图像形成装置。解决方案：图像形成装置具有存储有色彩的调色剂的显影装置4和调色剂浓度检测器44，以通过将形成在感光体1上的静电图像供给到静电图像来显影静电图像之后检测调色剂浓度调色剂，并且当通过调色剂浓度检测器检测到调色剂浓度时，具有与显影时间相反的极性的极性的显影偏压被提供给显影装置指定的时间。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JPH1063106A TRANSFER DEVICE AND IMAGE FORMING DEVICE 失效
公开(公告)号：JPH1063106A
公开(公告)日：1998-03-06
申请号：JP22279496
申请日：1996-08-23
申请人： TOSHIBA CORP
发明人： TAKAHASHI KOJI , IMAMIYA KOJI , KATO HIROTAKA , HIRANO KOJI
IPC分类号： G03G15/14 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To excellently peel a material to be transferred (paper) from an image carrier (photoreceptor drum) whether the material to be transferred (paper) is thick or thin. SOLUTION: This transfer device is equipped with a transfer roller 17 coming into contact with the photoreceptor drum 10 and bringing the paper advancing along an advancing path into press-contact with an image carried on the drum 10 so that the image may be transferred. In such a case, the central angle of the drum 10 to contact width between the roller 17 and the drum 10 is set to 2θ. Assuming that an angle formed by a 1st center line l0 passing the center of the drum 10 and orthogonally crossing the paper advancing path and a 2nd center line lx passing the center of the drum 10 and a center obtained when the roller 17 is moved to the upstream side in a paper progressing direction by a specified distance is θ', relation θ

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