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1. 发明授权

US5530528A Image forming apparatus having contact type, one-component developing unit 失效
标题翻译：具有接触型，单组分显影单元的图像形成装置
公开(公告)号：US5530528A
公开(公告)日：1996-06-25
申请号：US103807
申请日：1993-08-10
申请人： Yoji Houki , Makoto Matsuoka , Takeo Kojima , Akira Takahashi , Mitsuhito Furukawa , Hiroshi Kera
发明人： Yoji Houki , Makoto Matsuoka , Takeo Kojima , Akira Takahashi , Mitsuhito Furukawa , Hiroshi Kera
IPC分类号： G03G15/08 , G03G21/00
CPC分类号： G03G15/0806 , G03G15/0856 , G03G15/0862
摘要： An image forming apparatus having a developing unit for developing an electrostatic latent image on a photosensitive drum with a one-component toner, consisting of an endless latent image carrier; an image forming unit for forming an electrostatic latent image on the image carrier; a developing unit, for causing the developing roller to contact the image carrier to develop the electrostatic latent image on the image carrier; a mechanism for driving the developing unit; a toner sensor for detecting the presence/absence of the toner in the developing unit; and an abutting/detaching mechanism for abutting or detaching the developing roller of the developing unit on or from the image carrier. According to one aspect of this invention, this apparatus further has a controller for executing an image forming mode to control image formation in response to an image forming instruction, and a developer supply mode for, with the developing roller set apart from the image carrier, driving the driving mechanism to supply the toner to the developing roller in accordance with an output of the toner sensor indicating an insufficient amount of the toner.
摘要翻译：一种图像形成装置，具有显影单元，用于利用由无限潜像载体构成的单组分调色剂在感光鼓上显影静电潜像; 图像形成单元，用于在所述图像载体上形成静电潜像; 显影单元，用于使显影辊接触图像载体以在图像载体上显影静电潜像; 用于驱动显影单元的机构; 用于检测显影单元中调色剂的存在/不存在的调色剂传感器; 以及用于将显影单元的显影辊抵接或分离在图像载体上或从图像载体上脱离的抵接/分离机构。根据本发明的一个方面，该装置还具有控制器，用于执行图像形成模式以响应于图像形成指令来控制图像形成;以及显影剂供应模式，其中显影辊与图像载体分离，驱动驱动机构以根据调色剂传感器的输出将调色剂供应到显影辊，该输出指示调色剂的量不足。

2. 发明授权

US5095319A Optical scanning with light quantity compensation 失效
标题翻译：光量扫描与光量补偿
公开(公告)号：US5095319A
公开(公告)日：1992-03-10
申请号：US397885
申请日：1989-08-23
申请人： Shinichi Watarai , Shunji Kitagawa , Yoji Houki
发明人： Shinichi Watarai , Shunji Kitagawa , Yoji Houki
IPC分类号： B41J2/44 , G02B26/10 , G03G15/04 , G03G15/041 , G06K15/12 , H04N1/113 , H04N1/23
CPC分类号： G06K15/1209
摘要： An optical beam apparatus includes a light emission device, a driver for driving the light emission device with the applied VIDEO signal, an integral circuit for estimating a drop of the quantity of light emited by the light emission device from the VIDEO signal applied, and a light output control circuit for controlling the driver in compliance with the estimated result so that the quantity of light emitted by the light emission device becomes constant.

3. 发明授权

US5355200A Printer with print density switching means 失效
标题翻译：具有打印浓度切换功能的打印机
公开(公告)号：US5355200A
公开(公告)日：1994-10-11
申请号：US956868
申请日：1992-10-02
申请人： Hiroki Ohba , Yoshihiro Tonomoto , Kiyohisa Yanagita , Yoji Houki , Tomokazu Akuta , Akihiro Komuro
发明人： Hiroki Ohba , Yoshihiro Tonomoto , Kiyohisa Yanagita , Yoji Houki , Tomokazu Akuta , Akihiro Komuro
IPC分类号： B41J2/205 , B41J2/47 , B41J2/505 , B41J29/20 , B41J29/38 , B41J29/46 , G03G15/00 , G03G15/06 , G03G15/08 , G03G21/00 , G06K15/00 , G06K15/12
CPC分类号： B41J2/5056 , B41J2/471 , G03G15/065 , G03G15/0849 , G03G15/0853 , G03G15/50 , G03G15/5033 , G06K15/00 , G06K15/12 , G03G2215/00042 , G06K2215/0074
摘要： A printer capable of operation in an economy mode as well as in a normal mode. The printer includes a print mechanism for printing in accordance with print data. The printer also includes a print controller which controls the print mechanism. The printer is provided with a mode of operation selector for selecting between a normal mode of operation in which the print quality is relatively emphasized and an economy mode of operation in which operating costs are relatively emphasized. The print controller controls the print density at a first level when the normal mode of operation has been selected and at a second reduced level when the economy mode of operation has been selected.
摘要翻译：一种能够以经济模式以及正常模式操作的打印机。打印机包括用于根据打印数据进行打印的打印机构。该打印机还包括一个控制打印机构的打印控制器。打印机具有操作模式选择器，用于在其中相对强调打印质量的正常操作模式与操作成本相对强调的经济操作模式之间进行选择。当选择正常操作模式时，打印控制器将打印浓度控制在第一级，并且当选择经济操作模式时，打印控制器处于第二级别。

4. 发明授权

US5546170A Printer with print density switching means 失效
标题翻译：具有打印浓度切换功能的打印机
公开(公告)号：US5546170A
公开(公告)日：1996-08-13
申请号：US262872
申请日：1994-06-21
申请人： Hiroki Ohba , Yoshihiro Tonomoto , Kiyohisa Yanagita , Yoji Houki , Tomokazu Akuta , Akihiro Komuro
发明人： Hiroki Ohba , Yoshihiro Tonomoto , Kiyohisa Yanagita , Yoji Houki , Tomokazu Akuta , Akihiro Komuro
IPC分类号： B41J2/205 , B41J2/47 , B41J2/505 , B41J29/20 , B41J29/38 , B41J29/46 , G03G15/00 , G03G15/06 , G03G15/08 , G03G21/00 , G06K15/00 , G06K15/12
CPC分类号： B41J2/5056 , B41J2/471 , G03G15/065 , G03G15/0849 , G03G15/0853 , G03G15/50 , G03G15/5033 , G06K15/00 , G06K15/12 , G03G2215/00042 , G06K2215/0074
摘要： A computer controlled printer is capable of printing at different print densities. This makes it possible to automatically determine an optimum print density according to a normal operational mode with serious consideration given to print quality and an economy operational mode with serious consideration given to operating costs, thereby decreasing the print consumables. The printer has a print mechanism section for printing papers according to print data and a print controlling section for controlling the print mechanism section. The print controlling section selects either a print density in a normal mode or a print density in an economy mode according to the normal/economy instructions and controls the print density of the print mechanism section correspondingly.
摘要翻译：计算机控制的打印机能够以不同的打印浓度进行打印。这使得可以根据正常操作模式自动确定最佳打印浓度，同时严格考虑打印质量和经济运行模式，同时认真考虑操作成本，从而减少打印耗材。打印机具有用于根据打印数据打印纸张的打印机构部分和用于控制打印机构部分的打印控制部分。打印控制部分根据正常/经济指令选择正常模式下的打印浓度或经济模式下的打印浓度，并相应地控制打印机构部分的打印浓度。

5. 发明授权

US5539447A Optical scanning unit and image forming apparatus using the same with rotating lever attached to a cover for light emission and prevention 失效
标题翻译：光学扫描单元和使用该光学扫描单元的图像形成设备具有附接到盖的旋转杆以用于发光和防止
公开(公告)号：US5539447A
公开(公告)日：1996-07-23
申请号：US104017
申请日：1993-08-10
申请人： Tomokazu Akuta , Yoji Houki , Takashi Maekawa , Akihiro Komuro , Mamoru Hokari , Yasuhiro Ite
发明人： Tomokazu Akuta , Yoji Houki , Takashi Maekawa , Akihiro Komuro , Mamoru Hokari , Yasuhiro Ite
IPC分类号： G03G15/04 , G06K15/12 , H04N1/053 , H04N1/113 , H04N1/12 , B41J2/435 , G11B7/00
CPC分类号： H04N1/053 , G03G15/04 , G06K15/1219 , H04N1/1135 , G03G15/0435 , H04N1/12 , H04N2201/0471
摘要： The present invention relates to an optical scanning unit used for exposing a photosensitive drum of an image forming apparatus to light, and an image forming apparatus using this optical scanning unit. This optical scanning unit comprises a light source; an optical scanning mechanism for scanning with light from the light source; a start detecting mechanism for detecting scan light of the optical scanning mechanism at an end portion of a scanning range of the scan light to detect beginning of light scanning; and a frame which has a higher rigidity than that of a frame of an image forming apparatus and to which the light source, the optical scanning mechanism and the start detecting mechanism are attached. The image forming apparatus comprises an endless photosensitive body; charging unit for charging the photosensitive body; an optical scanning unit for exposing the photosensitive body to light, including a light source, an optical scanning mechanism having the same structure as the aforementioned optical scanning unit; a developing unit for developing an electrostatic latent image formed on the photosensitive body by light exposure by the optical scanning unit; and a transfer unit for transferring a toner image on the photosensitive body onto a sheet. Alteration of the optical path of the optical scanning unit by external force applied is made smaller by making the frame of the optical scanning unit more rigid than that of the image forming apparatus.
摘要翻译：本发明涉及用于将图像形成装置的感光鼓曝光的光学扫描单元和使用该光学扫描单元的图像形成装置。该光学扫描单元包括光源; 用于利用来自光源的光进行扫描的光学扫描机构; 用于检测扫描光的扫描范围的端部处的光学扫描机构的扫描光以检测光扫描的开始检测机构; 以及具有比图像形成装置的框架更高的刚性的框架，并且光源，光学扫描机构和启动检测机构被安装到该框架上。图像形成装置包括环形感光体; 用于对感光体充电的充电单元; 用于将感光体曝光的光学扫描单元，包括光源，具有与上述光学扫描单元相同结构的光学扫描机构; 显影单元，用于通过光学扫描单元的曝光来显影形成在感光体上的静电潜像; 以及用于将感光体上的调色剂图像转印到片材上的转印单元。通过使光学扫描单元的框架比图像形成装置的框架更刚性，通过外力施加的光学扫描单元的光路的变化更小。

6. 发明授权

US4986528A Method of separately feeding a print medium sheet and apparatus therefor 失效
标题翻译：单独供给打印介质片的方法及其装置
公开(公告)号：US4986528A
公开(公告)日：1991-01-22
申请号：US360698
申请日：1989-06-02
申请人： Shinichi Watarai , Yoji Houki , Tomohiro Nonomura
发明人： Shinichi Watarai , Yoji Houki , Tomohiro Nonomura
IPC分类号： B65H5/06 , B65H9/00 , G03G15/00
CPC分类号： B65H9/00 , B65H5/062
摘要： A skew of a print medium sheet generally occurs when the sheet is fed to an image-forming area in an image-forming apparatus, for example, an electronics image-forming printer, from a pile of such sheets. An apparatus according to the present invention is provided with a plurality of pairs of feed rollers between the pile and the image-forming area, and a skew of a sheet is corrected every time the sheet comes in contact with each pair of rollers which are not rotating for a predetermined time, so that even a large skew can be corrected by the time the sheet reaches the image-forming area.

7. 发明授权

US5418604A Image forming method and apparatus with automatic skew control 失效
标题翻译：具有自动倾斜控制的图像形成方法和装置
公开(公告)号：US5418604A
公开(公告)日：1995-05-23
申请号：US103789
申请日：1993-08-10
申请人： Masanao Nagakura , Hiroji Uchimura , Yasunori Hamada , Nobuyuki Hayashida , Haruhisa Inagaki , Yoji Houki
发明人： Masanao Nagakura , Hiroji Uchimura , Yasunori Hamada , Nobuyuki Hayashida , Haruhisa Inagaki , Yoji Houki
IPC分类号： G03G15/00 , G03G21/00
CPC分类号： G03G15/6502 , G03G15/6564 , G03G15/6567
摘要： Disclosed are an image forming method for checking pickup of a sheet on which an image is to be formed before correcting skewing of the sheet, and an image forming apparatus. This method comprises a first step of permitting a pickup roller to pick up a sheet from a sheet retaining unit and causing the leading edge of the sheet to abut against resist rollers; a second step of permitting a detecting mechanism to detect that the sheet has been picked up by the pickup roller; a third step of rotating the pickup roller by a predetermined amount according to the detection of the detecting mechanism; a fourth step of driving the resist rollers to feed the sheet and driving an image forming mechanism for forming an image on the sheet; and a fifth step of permitting the image forming mechanism to form an image on the fed sheet. The apparatus comprises a sheet retaining unit for retaining sheets; a pickup roller for picking up a sheet from the sheet retaining unit; resist rollers against which the leading edge of the sheet abuts; an image forming mechanism for forming an image on a sheet fed by the resist rollers; a detecting mechanism for detecting that the sheet has been picked up by the pickup roller; and a controller for rotating the pickup roller, then rotating the pickup roller by a predetermined amount according to a sheet detection output of the detecting mechanism, then stopping rotating the pickup roller, and then rotating the resist rollers.
摘要翻译：公开了一种图像形成方法，用于在校正片材的偏斜之前检查要在其上形成图像的片材的拾取，以及图像形成装置。该方法包括：第一步骤，允许拾取辊从片材保持单元拾取片材并使片材的前缘抵靠抵抗辊; 第二步骤，允许检测机构检测所述纸张是否被拾取辊拾取; 第三步骤，根据检测机构的检测将拾取辊旋转预定量; 驱动所述阻挡辊进给所述片材并驱动用于在所述片材上形成图像的图像形成机构的第四步骤; 以及允许图像形成机构在供纸片材上形成图像的第五步骤。该装置包括用于保持片材的片材保持单元; 拾取辊，用于从片材保持单元拾取片材; 阻挡辊，所述片的前缘抵靠着所述抵抗辊; 图像形成机构，用于在由所述阻挡辊供给的片材上形成图像; 检测机构，用于检测纸张是否被拾取辊拾取; 以及用于旋转拾取辊的控制器，然后根据检测机构的纸张检测输出将拾取辊旋转预定量，然后停止旋转拾取辊，然后旋转阻挡辊。

8. 发明授权

US5066978A Image forming apparatus having an exchangeable unit exchange timing indicating device 失效
标题翻译：具有可交换单元交换指示装置的图像形成装置
公开(公告)号：US5066978A
公开(公告)日：1991-11-19
申请号：US359012
申请日：1989-05-31
申请人： Shinichi Watarai , Megumi Yasuda , Yoji Houki , Yukio Nishio
发明人： Shinichi Watarai , Megumi Yasuda , Yoji Houki , Yukio Nishio
IPC分类号： G03G21/00 , G03G15/00 , G03G21/18
CPC分类号： G03G21/1889 , G03G15/55 , G03G15/553 , G03G2221/1663 , G03G2221/183
摘要： The image forming device of this invention is related to a device such as a duplicator, a printer, a facsimile or the like in which a printing operation is carried out by utilizing an electrophotographic recording system and an electrostatic recording system, wherein the device includes a plurality of consumable working parts including at least a developing unit, a drum unit, a fixing unit, and a transfer unit, and the device further includes a unit for integrating the working time of each of the working parts, a memory for storing the integrated working time of each working part, a lifetime setting unit in which a predetermined lifetime of each working part is set, and a generator for generating an exchange requirement signal for at least one of the working parts when the integrated working time of the working part reaches the lifetime of the part set in the lifetime setting unit, whereby an image forming device having a system in which these consumable working parts can be exchanged at correct intervals, regardless of the conditions of use, is provided.

9. 发明授权

US4878088A Developing unit of electrophotographic apparatus 失效
标题翻译：电子照相设备显影单元
公开(公告)号：US4878088A
公开(公告)日：1989-10-31
申请号：US880920
申请日：1986-07-01
申请人： Akio Nakanishi , Toshio Hino , Yoshio Iino , Kazuhisa Suetani , Yoji Houki , Hirotoshi Ikuta
发明人： Akio Nakanishi , Toshio Hino , Yoshio Iino , Kazuhisa Suetani , Yoji Houki , Hirotoshi Ikuta
IPC分类号： G03G15/08 , G03G15/09
CPC分类号： G03G15/0935 , G03G15/0822 , G03G15/0896 , G03G15/09
摘要： A developing unit of an electrophotographic apparatus is provided for developing an electrostatic latent image formed on an image forming member, by electrostatically adsorbing powder developer onto the latent image. The developing unit includes a screw provided with paddles or grooves, each having a helix angle with respect to an axis of the screw, the screw transferring and supplying the powder developer stored in a developer reservoir to the developing roller; a blade for regulating a layer thickness of the powder developer to be transferred to the image forming member; and a flow regulating plate for biasing a flow of the powder developer, which has been removed by the blade and returned to the developer reservoir due to the force of gravity, in a direction opposite to a direction in which the powder developer is transferred by the screw. The developing unit further includes a structure for accurately positioning and maintaining the developing roller within a specified distance from the image forming member, thereby improving the uniformity of the developer concentration.

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