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41. 发明专利

JPH10268645A DEVELOPER REPLENISHMENT DEVICE 失效
公开(公告)号：JPH10268645A
公开(公告)日：1998-10-09
申请号：JP7200697
申请日：1997-03-25
申请人： MINOLTA CO LTD
发明人： IINO SHUJI , FUJIWARA TOSHIMITSU , MIYAMOTO HIDETOSHI , YAMADA MASASANE , KOJIMA SEIJI
IPC分类号： G03G15/10
摘要： PROBLEM TO BE SOLVED: To correctly measure the concentration of toner with an amount of charge able to developer electrostatic latent image, by electrically attaching toner to two electrodes impregnated with liquid developer, and measuring the concentration of the electrically attached toner with a measuring means provided apart from the liquid developer. SOLUTION: The internal wall of a liquid-developer tank 408, extending between opposite parts from its edge (f) to the bottommost point of a developing roller 402, has a circular face with a specified gap maintained between the developing roller 402 and itself. On the circular face, the electrode 401 is provided for electrically attaching toner to the surface of the developing roller 402 by applying a voltage between the circular face and the developing roller 402. Also, the concentration sensor 59 for measuring the concentration of the toner charged and attached to the developing roller 402 is provided between the area of the thin-layer formation electrode 401 and the area (c) where the developing roller 402 faces a photoreceptor 1. The concentration sensor 59 emits light to the thin layer of liquid developer formed on the surface of the developing roller 402, and measures the light reflected from it.

42. 发明专利

JPH10268581A ELECTROPHOTOGRAPHIC LIQUID DEVELOPER 失效
公开(公告)号：JPH10268581A
公开(公告)日：1998-10-09
申请号：JP7200197
申请日：1997-03-25
申请人： MINOLTA CO LTD
发明人： MIYAMOTO HIDETOSHI , KOJIMA SEIJI , FUJIWARA TOSHIMITSU
IPC分类号： G03G9/12 , G03G9/13
摘要： PROBLEM TO BE SOLVED: To obtain an electrophotographic liquid developer excellent in stability with time with which a high system rate is obtd., by incorporating an oil-soluble ionic surfactant as a charge controlling agent and incorporating a specified polyester resin as a binder resin into color fine particles. SOLUTION: This electrophotographic liquid developer is produced by dispersing color fine particles in an electrically insulating liquid medium, into which an oil-soluble ionic surfactant is incorporated as a charge controlling agent. The color fine particles contain a polyester resin having the acid value between >=40 mgKOH/g and =40 mgKOH/g and

43. 发明专利

JPH10268580A ELECTROPHOTOGRAPHIC LIQUID DEVELOPER 失效
公开(公告)号：JPH10268580A
公开(公告)日：1998-10-09
申请号：JP7185197
申请日：1997-03-25
申请人： MINOLTA CO LTD
发明人： KOJIMA SEIJI , MIYAMOTO HIDETOSHI , FUJIWARA TOSHIMITSU
IPC分类号： G03G9/12 , G03G9/13
摘要： PROBLEM TO BE SOLVED: To obtain an electrophotographic liquid developer excellent in stability with time with which a high system rate is obtd., by incorporating an oil-soluble ionic surfactant as a charge controlling agent and incorporating a specified polyester resin as a binder resin into color fine particles. SOLUTION: This electrophotographic liquid developer is produced by dispersing color fine particles in an electrically insulating liquid medium, into which an oil-soluble ionic surfactant is incorporated as a charge controlling agent. The color fine particles contain a polyester resin as a binder resin having the glass transition temp. (Tg) between >=35 deg.C and =35 deg.C and

44. 发明专利

JPH0926707A INTERMEDIATE TRANSFER MEDIUM 失效
公开(公告)号：JPH0926707A
公开(公告)日：1997-01-28
申请号：JP17578195
申请日：1995-07-12
申请人： MINOLTA CO LTD
发明人： MATSUURA MASAHIKO , KOJIMA SEIJI
IPC分类号： G03G15/16 , G03G7/00
摘要： PROBLEM TO BE SOLVED: To suppress the change in surface condition according to repetition of an image shape and to prevent the smoothing of a substrate layer surface by formation of a protective layer by providing an intermediate transfer medium with a protective film by a plasma polymn. method. SOLUTION: A resin sheet which is the substrate part of the intermediate transfer medium is wound around the surface of an aluminum cylinder 102 and is fixed by chucking members 107a, 107b. The inside of a vessel 101 is evacuated by using a rotary pump until a reduced pressure is attained. On the other hand, a heater 108 is energized to heat the aluminum cylinder 102 to maintain a specified temp. of a resin sheet. A gaseous raw material is then supplied from a gas supplying pipe 106 into the vessel 101 and while the discharge rate is regulated, the inside of the vessel 101 is regulated to a prescribed pressure. AC current is impressed on an electrode 111 by a power source 105 and a plasma discharge is effected by a prescribed discharge electric power in the vessel 101 when the flow rate of the gas stabilizes and the pressure in the vessel 101 stabilizes. The film thickness of the surface protective layer is controlled by regulating the discharge time.

45. 发明专利

JPH07191500A IMAGE FORMING METHOD 失效
公开(公告)号：JPH07191500A
公开(公告)日：1995-07-28
申请号：JP32926293
申请日：1993-12-27
申请人： MINOLTA CO LTD
发明人： KOJIMA SEIJI , OSAWA MOCHIKIYO
IPC分类号： G03G9/08 , G03G5/08 , G03G5/147 , G03G13/08 , G03G15/08
摘要： PURPOSE:To prevent image flowing or defective cleaning from occurring even when an image forming process is repeatedly executed by developing an electrostatic latent image on an image carrier provided with a carbonaceous high- hardness coating layer as the surface layer by using toner obtained by externally adding post-treatment particulates after organic particulates which are harder than the binder resin is fixed to the surface. CONSTITUTION:A photoreceptor drum 1 is uniformly and electrostatically charged by a corona electrostatie charger 2 and irradiated with exposure light 3 next. Then, the electrostatic latent image is formed. The electrostatic latent image is continuously developed by the toner housed in a developing device 4 and transferred on a transfer paper 5 by a transfer charger 6. As the toner housed in the developing device 4, the toner obtained by externally adding the post-treatment particulates after the organic particulates are fixed to the surface is used. As the organic particulates used for the fixing processing, the harder particulates than the binder resin of the toner preferably the Rockwell hardness thereof is 10 or higher than that of the binder resin of the toner are used.

46. 发明专利

JPH07121005A CONTACT ELECTRIFIER 失效
公开(公告)号：JPH07121005A
公开(公告)日：1995-05-12
申请号：JP26922493
申请日：1993-10-27
申请人： MINOLTA CO LTD
发明人： OSAWA MOCHIKIYO , DOI ISAO , KOJIMA SEIJI , UCHIMOTO YOSHIHIRO
IPC分类号： F16C13/00 , G03G15/02
摘要： PURPOSE:To obtain a contact electrifier of high reliability capable of obtaining an excellent image without generating a very small bound even in a high speed region as well by constituting a conductive resin layer so as to obtain a specific elongatic>n percentage. CONSTITUTION:The contact electrifier is used for an image forming device having an electrostatic latent image carrier whose surface moving speed is >=22cm/sec and provided with a conductive elastic layer having elongation of 10% in a piece of 1cm width on a conductive substrate. Moreover, an electrifier 2, a developing device 3, a transfer charger 4, a cleaning device 5 and an eraser 6 are successively arranged around a photoreceptor drum. At this time, the electrifying device 2 can be driven in such a manner that a roller is brought into contact with the photoreceptor drum 1 by a coil spring 100 as an energizing means. A function separation type organic photoreceptor where charge generating and transferring layers are successively laminated on the conductive substrate is manufactured and used as the photoreceptor drum 1.

47. 发明专利

JP2004294843A Nonmagnetic one component toner, nonmagnetic one component contact developing device, and image forming apparatus 审中-公开
标题翻译：非特异性组件调色剂，非特异性组件联系开发设备和图像形成装置
公开(公告)号：JP2004294843A
公开(公告)日：2004-10-21
申请号：JP2003087887
申请日：2003-03-27
申请人： Minolta Co Ltd , ミノルタ株式会社
发明人： KOJIMA SEIJI , UEDA HIDEAKI
IPC分类号： G03G9/08 , G03G9/087 , G03G9/097
CPC分类号： G03G9/0821 , G03G9/0819 , G03G9/0827
摘要： PROBLEM TO BE SOLVED: To provide a nonmagnetic one component toner, a developing device, and an image forming apparatus capable of providing images free of noises such as image unevenness, blur, and fogging over a prolonged period of time even when a nonmagnetic one component contact developing system, a cleanerless system, and a contact charging system are applied. SOLUTION: The nonmagnetic one component toner comprises toner particles having a volume average particle diameter of 2-8 μm, a volume average particle diameter to number average particle diameter ratio of ≤1.22, an average circularity of ≥0.92, and a Vickers hardness of ≥13.5HV0.01 (10 g). The nonmagnetic one component contact developing device and the image forming apparatus use this toner. Thus, transfer efficiency can be made high at an early stage and during long-time printing and images free of image unevenness, blur and fog and having sufficiently high image density are formed. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种非磁性单组分调色剂，显影装置和图像形成装置，其能够在长时间内提供无图像不均匀，模糊和起雾等噪点的图像，即使当非磁性单组分接触显影系统，无清洁器系统和接触充电系统。解决方案：非磁性单组分调色剂包括体积平均粒径为2-8μm，体积平均粒径与数均粒径比≤1.22，平均圆形度≥0.92的调色剂颗粒和维氏硬度≥13.5HV0.01（10g）。非磁性单组分接触显影装置和图像形成装置使用该调色剂。因此，可以在早期和长时间打印期间提高传送效率，并且形成没有图像不均匀，模糊和雾并且具有足够高图像密度的图像。版权所有（C）2005，JPO＆NCIPI

48. 发明专利

JP2002184023A INFORMATION-RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JP2002184023A
公开(公告)日：2002-06-28
申请号：JP2000374012
申请日：2000-12-08
申请人： MINOLTA CO LTD
发明人： OGURA KAZUYUKI , HATANO HIROSHI , KOJIMA SEIJI
IPC分类号： G11B7/004 , G11B7/135
摘要： PROBLEM TO BE SOLVED: To increase the quantity of detected light and to improve stability and reliability of reproduced information, when the information is reproduced in an information recording and reproducing device. SOLUTION: The light for reproduction of information is emitted from a laser light source 31 and converted into annular light by an annular light generating optical system 33 compose of axicon lenses 331, 332. The annular light enters a solid immersion mirror 1 and approaches as the near-field light for information reproducing the recording layer 8a of a recording medium 8. The light, reflected on the recording layer 8a, has light in the annular region, and the light in the inner region and the whole light is reflected by a polarization beam splitter 34 and is guided to a photodetector 37.

49. 发明专利

JP2000315321A NON-DESTRUCTIVE REPRODUCING METHOD OF INFORMATION ON OPTICAL RECORDING MEDIUM AS WELL AS OPTICAL REPRODUCING DEVICE AND OPTICAL RECORDING/REPRODUCING DEVICE 失效
公开(公告)号：JP2000315321A
公开(公告)日：2000-11-14
申请号：JP12448799
申请日：1999-04-30
申请人： MINOLTA CO LTD
发明人： OGURA KAZUYUKI , KOJIMA SEIJI
IPC分类号： G11B7/244 , G11B7/00 , G11B7/005 , G11B7/125 , G11B7/24
摘要： PROBLEM TO BE SOLVED: To provide a reproducing device for reproducing information without destructing information by reproducing the information by using the light of wavelengths which are not absorbed by organic dyestuffs in a recording layer containing the organic dyestuffs for recording the information as the light for reproducing the information. SOLUTION: This optical recording/reproducing device includes a light-emitting device 10 for reproducing, a light-emitting device 20 for recording, a read-out device 30, a storing part 40 of the optical recording medium or the like, and executes both of recording and reproducing of the information for the optical recording medium 31. A laser beam source 33 for reproducing the information emits a beam L1 for reproducing the information (a He-Ne red laser beam of 632.8 nm oscillating wavelength) and a laser beam source 32 for recording the information emits a beam L2 for recording the information (a He-Ne green laser beam of 543.5 nm oscillating wavelength). As the beam L1, with which a recording layer of the optical recording medium 31 is irradiated, is a beam which is not absorbed at the wavelength thereof by the organic dyestuffs in the recording layer at the time of reproducing the information, the recording of the information does not change thereon even when the recording layer is irradiated with the beam L1 for reproducing the information.

50. 发明专利

JP2000285505A OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JP2000285505A
公开(公告)日：2000-10-13
申请号：JP8809399
申请日：1999-03-30
申请人： MINOLTA CO LTD
发明人： KOJIMA SEIJI , OGURA KAZUYUKI
IPC分类号： G11B7/24
摘要： PROBLEM TO BE SOLVED: To improve the accuracy for detection of positions and distance in a tracking operation by forming a thin metal layer on the surface of an information recording layer of an optical recording medium in which information can be recorded, reproduced and erased by near-field light. SOLUTION: The optical recording medium 5 consists of a glass substrate 51, a photochromic recording layer 52, and a thin metal layer 53. The optical recording medium 5 is produced by mixing a diaryl ethene compd. as a photochromic material in a polystyrene resin to obtain the layer 52, applying the mixture on a glass substrate 51 by a spin coating method, and then forming the thin metal layer 53 thereon. A near-field light generator is disposed in the proximity of the metal layer 53 side. The thin metal layer 53 is formed to cover the surface of the recording layer 52. The metal layer 53 can be used for the detection of the relative position between the optical recording medium 5 and the near-field light generator in the direction parallel to the medium surface 5a.

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