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21. 发明专利

JP2008129479A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2008129479A
公开(公告)日：2008-06-05
申请号：JP2006316494
申请日：2006-11-24
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAKAHASHI TOMOKO , KOSUGI HIDEKI , YAMADA MASAAKI , NAKAGAWA YOSHINORI , KADOTA ICHIRO , ISHII YASUYUKI , YOSHINAMI HIDEKI
IPC分类号： G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus of a hopping developing system, capable of avoiding insufficiency of image density and soiling of a base, resulting from failure in generating an appropriate electric field on the surface of a toner carrier roller 31.
SOLUTION: The image forming apparatus comprises the toner carrier roller 31 including a plurality of electrodes, not shown, arranged in the rotating direction, and an AC power source 59 for generating an electric field on the surface of the toner carrier roller 31 by applying a voltage to the plurality of electrodes. The image forming apparatus causes toner supplied to the rotating surface of the toner carrier roller 31 to hop on the roller surface by means of the electric field and, simultaneously, conveys the toner to the place opposite a photoreceptor 58 by the rotation of the roller surface, thereby attaching the toner to the latent image on the photoreceptor 58. In the image forming apparatus, the AC power source 59 used here is the one that brings the surface potential of the toner carrier roller 31 to a value between the potential of the latent image on the photoreceptor 58 and the potential of the base of the photoreceptor 58 by applying the voltage.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种跳跃显影系统的图像形成装置，其能够避免由于在调色剂承载辊的表面上产生适当的电场的失败而导致的图像密度和底部的污染不足解决方案：图像形成装置包括：调色剂承载辊31，其包括沿旋转方向布置的多个未示出的电极;以及AC电源59，用于在调色剂承载器的表面上产生电场辊31通过向多个电极施加电压。图像形成装置使得供给到调色剂承载辊31的旋转表面的调色剂通过电场在辊表面上跳跃，同时通过辊表面的旋转将调色剂传送到与感光体58相对的位置，从而将调色剂附着在感光体58上的潜像上。在图像形成装置中，这里使用的AC电源59是使调色剂承载辊31的表面电位为潜在的潜在值通过施加电压，感光体58上的图像和感光体58的基底的电位。版权所有（C）2008，JPO＆INPIT

22. 发明专利

JP2007241320A Fixing device and image forming apparatus 审中-公开
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2007241320A
公开(公告)日：2007-09-20
申请号：JP2007166545
申请日：2007-06-25
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ECHIGO KATSUHIRO , KOSUGI HIDEKI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device capable of obtaining a desired glossiness by eliminating the need to switch temperature, linear velocity and, furthermore, pressure.
SOLUTION: The fixing device fixes an unfixed image held on a sheet S. The device includes: a pair of heat conductive belts 14, 14' disposed such that opposite extending faces move in the same direction; and nip parts N11, N2 disposed at least in two areas in the extending direction of the opposite extending faces of the heat conductive belts 14, 14' so as to press a sheet S sandwiched between the heat conductive belts 14, 14'. In the one nip N1, the heat conductive belts 14, 14' are constantly in contact with each other. In the other nip N2, the heat conductive belts 14, 14' are brought into contact with each other or separated therefrom. The length of the area where heat is transmitted to a sheet S, defined by the opposite extending faces, can be altered according to a contact/separation state.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够通过消除切换温度，线速度以及压力来获得所需光泽度的定影装置。解决方案：固定装置固定保持在片材S上的未固定的图像。该装置包括：一对导热带14,14'，其布置成使得相对的延伸面沿相同方向移动; 以及在导热带14,14'的相对的延伸面的延伸方向上至少设置在两个区域中的压区N11，N2，以便挤压夹在导热带14,14'之间的片材S. 在一个压区N1中，导热带14,14'彼此不断地接触。在另一个辊隙N2中，导热带14,14'彼此接触或与其分离。可以根据接触/分离状态改变热量传递到由相对的延伸面限定的片材S的区域的长度。版权所有（C）2007，JPO＆INPIT

23. 发明专利

JP2007147980A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2007147980A
公开(公告)日：2007-06-14
申请号：JP2005341969
申请日：2005-11-28
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KOSUGI HIDEKI , SUZUKI KAZUMI , KADOTA ICHIRO
IPC分类号： G03G15/00 , G03G15/06 , G03G15/08 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide a means for restraining the deterioration of image quality when toner is deteriorated by accurately detecting the deterioration of the toner caused by agitation in a developing device. SOLUTION: The image forming apparatus 100 is equipped with a means for detecting 71 or arithmetically calculating the electrification amount of toner particles in developer, and a means for detecting 120a and 120b or arithmetically calculating the adhesive amount and the electrification amount of the toner particles developed as an image, and controls a developing condition and a transfer condition by deciding the deteriorated state of the developer on the basis of the value of α arithmetically calculated by α=(Q/M) dev /(Q/M) unit on the basis of the result of detection or arithmetic calculation. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于通过精确地检测由显影装置中的搅动引起的调色剂劣化来提供调色剂劣化时抑制图像质量劣化的手段。图像形成装置100配备有用于检测71或计算显影剂中的调色剂颗粒的带电量的装置，以及用于检测120a和120b的装置或算术计算粘合剂量和电化量的装置作为图像显影的调色剂颗粒，并且通过基于通过α=（Q / M） ~~算术计算的α的值来决定显影剂的劣化状态来控制显影条件和转印条件， /（Q / M）单位</ SB>。版权所有（C）2007，JPO＆INPIT~~

24. 发明专利

JP2005196154A Two-component developer, developing method, and image forming apparatus 审中-公开
标题翻译：双组分开发者，开发方法和图像形成装置
公开(公告)号：JP2005196154A
公开(公告)日：2005-07-21
申请号：JP2004357999
申请日：2004-12-10
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUZUKI KAZUMI , KATO KOICHI , NAKAI HIROSHI , YASUTOMI HIROSHI , SUZUKI HIROKATSU , KOSUGI HIDEKI , KADOTA ICHIRO , YURA JUN
IPC分类号： G03G9/08 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a developer and a developing method which realize the output of stable images, free from surface staining and toner scattering, when a copying process is repeated for a long period of time and even when such a special use state consuming less toner continues over a long period of time relating to a development device of such a small size as represented by a process cartridge, and to provide an image forming apparatus which uses the development device. SOLUTION: The toner of the two-component developer comprises the toner with an external additive added thereto and a magnetic carrier, wherein the toner is a negative charge type toner and is so formed that the relation between the amount of electrostatic charge distribution peak position μ'0 of the toner in the external force imparting developer and the amount of electrostatic charge distribution peak position μ'1 of the replenishing toner of the equilibrium state measured in a separately set test method falls within the range of 0>μ'0>μ'1 and 0.3fC/μm COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种实现稳定图像的输出的显影剂和显影方法，当没有表面染色和调色剂散射时，当复制过程长时间重复时，甚至当这样特殊的使用耗时较少的调色剂在与由处理盒所表示的小尺寸的显影装置有关的长时间内持续，并且提供使用显影装置的图像形成装置。解决方案：双组分显影剂的调色剂包括添加有外部添加剂的调色剂和磁性载体，其中调色剂是负电荷型调色剂，并且形成为使静电电荷分布量之间的关系外力赋予显影剂中的调色剂的峰值位置μ'0和在分开设定的测试方法中测量的平衡状态的补充调色剂的静电电荷分布峰值位置μ'1的量落在0>μ' 0>μ'1和0.3fC /μm<¾μ'1-μ'0¾<0.6fC /μm; 并且当调色剂是正电荷型调色剂时，平衡状态的关系落在0 <μ'0<μ'1和0.3fC /μm<¾μ'1-μ'0¾<0.6fC /μm的范围内。版权所有（C）2005，JPO＆NCIPI

25. 发明专利

JP2005111899A Apparatus and method for forming image 有权
标题翻译：用于形成图像的装置和方法
公开(公告)号：JP2005111899A
公开(公告)日：2005-04-28
申请号：JP2003351444
申请日：2003-10-10
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YASUTOMI HIROSHI , YURA JUN , KOSUGI HIDEKI , SUZUKI HIROKATSU , KATO KOICHI , NAKAI HIROSHI , KADOTA ICHIRO , SUZUKI KAZUMI
IPC分类号： B41J2/52 , B41J2/44 , G03G9/09 , G03G15/00 , G03G15/04 , G06K15/12 , H04N1/40 , H04N1/405 , H04N1/409 , H04N1/52 , H04N1/58 , H04N1/60
CPC分类号： H04N1/40068 , G06K15/1223 , G06K15/1238 , H04N1/405 , H04N1/6072
摘要： PROBLEM TO BE SOLVED: To output a high-quality image by maintaining a good gradation of a photographic image or a graphic image as well as to suppress jaggy in a character or a line image. SOLUTION: This image forming apparatus comprises a quasi-intermediate processing section 15 for forming output image data by applying a quasi-intermediate processing to input image data and an exposure unit 3 as a writing section for performing writing by optically modulating a plurality of lighting points according to the output image data. The exposure unit 3 performs the writing wherein the numbers of lighting points to be used in the plurality of lighting points are made different from each other between a character or a line image and a photographic image or a graphic image. The quasi-intermediate processing section 15 performs the quasi-intermediate processing wherein resolutions are made different from each other between a character or a line image and a photographic image or a graphic image corresponding to the number of lighting points used by the exposure unit 3. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过保持摄影图像或图形图像的良好灰度以及抑制字符或行图像中的锯齿来输出高质量图像。解决方案：该图像形成装置包括准中间处理部分15，用于通过对输入图像数据应用准中间处理来形成输出图像数据;以及曝光单元3，作为写入部分，用于通过光学调制多个的照明点根据输出图像数据。曝光单元3执行写入，其中使得多个照明点中的照明点的数量在字符或行图像与摄影图像或图形图像之间彼此不同。准中间处理部分15执行准中间处理，其中字符或行图像与摄影图像之间的分辨率彼此不同，或者与曝光单元3使用的点数相对应的图形图像。版权所有（C）2005，JPO＆NCIPI

26. 发明专利

JP2005091954A Image forming method, image forming apparatus, and process cartridge 审中-公开
标题翻译：图像形成方法，图像形成装置和处理盒
公开(公告)号：JP2005091954A
公开(公告)日：2005-04-07
申请号：JP2003327119
申请日：2003-09-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NAKAI HIROSHI , KATO KOICHI , YURA JUN , YASUTOMI HIROSHI , SUZUKI KAZUMI , SUZUKI HIROKATSU , KOSUGI HIDEKI , KADOTA ICHIRO
IPC分类号： G03G9/10 , G03G5/147
摘要： PROBLEM TO BE SOLVED: To provide an image forming method which can reduce the wear of a photoreceptor and can simultaneously suppress the occurrence of filming with a simple configuration and can maintain stable image for long period, and an image forming apparatus, and a process cartridge.
SOLUTION: The image forming method develops an electrostatic latent image on the photoreceptor 2 by using a developing device 1 which develops the electrostatic latent image with the toner supplied by a developing sleeve 3 carrying a dry two-component developer composed of a magnetic carrier and the toner and coming into contact with the photoreceptor 2. In the above method, the photoreceptor 2 contains fillers in a surface layer and the saturation magnetization of the magnetic carrier to an applying magnetic field of 1,000 oersteds is 80 to 180 emu/g.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够降低感光体的磨损的图像形成方法，并且能够以简单的构造同时抑制成像的发生，并且可以长期保持稳定的图像，以及图像形成装置，以及处理盒。解决方案：图像形成方法通过使用显影装置1显影感光体2上的静电潜像，显影装置1利用由携带由磁性材料构成的干燥双组分显影剂的显影套筒3供给的调色剂显影静电潜像载体和调色剂并与感光体2接触。在上述方法中，感光体2含有表面层中的填料，磁性载体与1000奥斯特施加磁场的饱和磁化强度为80至180emu / g 。版权所有（C）2005，JPO＆NCIPI

27. 发明专利

JP2004249677A Image forming apparatus 审中-公开
公开(公告)号：JP2004249677A
公开(公告)日：2004-09-09
申请号：JP2003044866
申请日：2003-02-21
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YASUTOMI HIROSHI , KADOTA ICHIRO , KOSUGI HIDEKI , SUZUKI HIROKATSU , SUZUKI KAZUMI , NAKAI HIROSHI , YURA JUN , KATO KOICHI
IPC分类号： B41J2/44 , G03G5/047 , G03G9/08 , G03G9/09 , G03G15/01 , G03G15/04 , H04N1/23 , H04N1/29
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of achieving good graininess with a value of "graininess degree" of 0.30 or below even if an error diffusion method excellent in the sharpness of an image or writing positional precision and hard to cause a moire is employed. SOLUTION: When the lengths of one pixel calculated based on resolving powers in the main scanning direction and sub-scanning direction of irradiated light are respectively set to Lp1 and Lp2 and the beam diameters in the main scanning direction and sub-scanning direction of irradiated light on a photosensitive drum 1 are set to D1 and D2, the relations of D1 COPYRIGHT: (C)2004,JPO&NCIPI

28. 发明专利

JP2004184907A Electrostatic charge image developing toner and developing device 审中-公开
公开(公告)号：JP2004184907A
公开(公告)日：2004-07-02
申请号：JP2002354693
申请日：2002-12-06
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KATO KOICHI , KADOTA ICHIRO , KOSUGI HIDEKI , NAKAI HIROSHI , SUZUKI HIROKATSU , SUZUKI KAZUMI , YASUTOMI HIROSHI , YURA JUN
IPC分类号： G03G9/08 , G03G9/087 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a developing device which effectively prevents dropping of additives such as titania and silica from a toner to thereby prevent adhesion of the additives to a lamination member, and consequently makes a toner layer uniformly thin to improve developing performance. SOLUTION: An electrostatic charge image developing toner used in the developing device 1 comprising a cylindrical rotating roller 2 for supporting an electrostatic charge image developing toner, a toner feed roller 3 for feeding an electrostatic charge image developing toner to the rotating roller 2, and a lamination member 4 for thinning an electrostatic charge image developing toner layer supported on the rotating roller 2 is obtained by mixing toner matrix particles formed using at least a binder resin and a colorant with titania and silica, and in the developing device 1, the lamination member 4 is free of adhesion of titania and silica dropping from the electrostatic charge image developing toner after printing on 100 sheets. COPYRIGHT: (C)2004,JPO&NCIPI

29. 发明专利

JP2004118180A Developing device, process cartridge and non-magnetic one-component toner 审中-公开
公开(公告)号：JP2004118180A
公开(公告)日：2004-04-15
申请号：JP2003303549
申请日：2003-08-27
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUZUKI KAZUMI , KATO KOICHI , NAKAI HIROSHI , YASUTOMI HIROSHI , KOSUGI HIDEKI , KADOTA ICHIRO , SUZUKI HIROKATSU , YURA JUN , SAKON HIROTA , ISHIKAWA MASAHIKO
IPC分类号： G03G9/08 , G03G9/087 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a developing device and a process cartridge constituted so that toner supply amount to a developing roller 2 can be kept constant, and non-magnetic one-component toner used therein. SOLUTION: The developing device is at least equipped with the developing roller used as one means constituting an electrophotographic image forming apparatus, carrying the non-magnetic one-component toner on its peripheral surface, rotating in contact with a latent image carrier and developing an electrostatic latent image formed on the latent image carrier by supplying the toner thereto, and a thin layer forming member for making the toner on the developing roller the thin layer while coming into contact with the peripheral surface of the developing roller. Assuming that the frictional force of the developing roller with the toner is F 1 and that of the thin layer forming member with the toner is F 2 , F 1 2 is satisfied. COPYRIGHT: (C)2004,JPO

30. 发明专利

JP2004109702A Device and method for forming image 审中-公开
公开(公告)号：JP2004109702A
公开(公告)日：2004-04-08
申请号：JP2002274080
申请日：2002-09-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO , IWAI SADAYUKI , TAKAHASHI TOMOKO , KOSUGI HIDEKI , IINO AYAKO
IPC分类号： B41J2/44 , G03G15/04 , G03G15/043 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To suppress transfer dust, to stably suppress irregularities in dots regardless of variation in lapse of time or irregularities in a developer and to improve image quality by improving graininess in an image forming device such as a copying machine, a printer and a facsimile. SOLUTION: A voltage applying member 15 for applying voltage which has the same polarity as a charge polarity of a photosensitive body 3 and also has an absolute value larger than latent image voltage V L is provided in an intermediate transfer belt 2 of a part corresponding to a gap on the upstream side of a transferring area in the rotating direction of the photosensitive body 3, and transferring is performed by a transferring bias roller. An optical writer 5 has a static beam spot wherein the relation between a dot pitch P of resolution X (dpi) in a vertical scanning direction and a static beam spot diameter ω is ω ≤ 2P. In this case, the static beam spot diameter ω is 1/e 2 of maximum beam intensity. COPYRIGHT: (C)2004,JPO

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