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1. 发明授权

US5424763A Color misregistration-free color image forming apparatus 失效
标题翻译：彩色无对准彩色图像形成装置
公开(公告)号：US5424763A
公开(公告)日：1995-06-13
申请号：US903606
申请日：1992-06-24
申请人： Kenichi Komiya , Jiro Egawa , Kyoichi Okada , Hirokazu Izawa
发明人： Kenichi Komiya , Jiro Egawa , Kyoichi Okada , Hirokazu Izawa
IPC分类号： G03G15/01 , H02P5/52 , H04N1/047 , H04N1/113 , H04N1/12 , G01D9/42 , G01D15/06 , H02P5/46
CPC分类号： G03G15/0163 , G03G15/0131 , H02P5/56 , H04N1/047 , H04N1/1135 , H04N1/12 , H04N2201/04729 , H04N2201/04731 , H04N2201/04789 , H04N2201/04791
摘要： In a color image forming apparatus such as a color laser printer, misregistration of colors of an output image along a subscanning direction is minimized so as to prevent accumulation of color misregistrations in the output image. In the apparatus, a photosensitive drum motor and a transfer drum motor are driven by motors exclusively provided thereto. The apparatus includes a photosensitive drum motor controller and a transfer drum motor controller respectively provided for speed-controlling the photosensitive drum motor and the transfer drum motor. By these motor controllers, a phase difference between a frequency generator signal from the motor and a phase reference signal is checked. Even if the phase difference exceeds a predetermined range of phase, the motor controller controls the motor so that the phase difference quickly falls within the predetermined range of phase.
摘要翻译：在诸如彩色激光打印机的彩色图像形成装置中，沿着副扫描方向的输出图像的颜色的对准被最小化，以防止输出图像中的颜色不对齐的累积。在该装置中，感光鼓电动机和转印鼓电动机由专门提供于其上的电动机驱动。该装置包括分别设置用于速度控制感光鼓电动机和转印鼓电动机的感光鼓电动机控制器和转印鼓电动机控制器。通过这些电动机控制器，检查来自电动机的频率发生器信号与相位参考信号之间的相位差。即使相位差超过预定的相位范围，电动机控制器控制电动机，使得相位差快速落在相位的预定范围内。

2. 发明授权

US5414331A Drive circuit for brushless motor 失效
标题翻译：无刷电机驱动电路
公开(公告)号：US5414331A
公开(公告)日：1995-05-09
申请号：US971953
申请日：1992-11-05
申请人： Hirokazu Izawa , Jiro Egawa , Kenichi Komiya
发明人： Hirokazu Izawa , Jiro Egawa , Kenichi Komiya
IPC分类号： H02P6/08 , H02P6/06 , H02P6/14 , H02K23/00 , H02P1/18
CPC分类号： H02P6/06 , H02P6/14
摘要： A drive circuit for a brushless motor having a rotor formed of a permanent magnet and stator coils includes a plurality of magnetic sensors each for sensing a rotational position of the rotor of the brushless motor to generate a voltage signal in accordance with a magnitude of a magnetic flux density received from the rotor passing, power amplifiers each for converting the voltage signal from each corresponding magnetic sensor to a drive voltage having a predetermined phase and voltage value and supplying the drive voltage obtained to each corresponding stator coil, a speed control signal generating circuit for generating a speed control signal for control of the rotational speed of the brushless motor, and magnetic sensor controller for controlling the magnitude of the output voltage of each magnetic sensor in response to the speed control signal so that the output voltage of each magnetic sensor takes a value in accordance with the speed control signal.
摘要翻译：一种用于具有由永磁体和定子线圈形成的转子的无刷电动机的驱动电路，包括多个磁传感器，每个磁传感器用于感测无刷电动机的转子的旋转位置，以根据磁场的大小产生电压信号从转子通过的磁通密度通过的功率放大器，用于将来自每个相应的磁传感器的电压信号转换为具有预定相位和电压值的驱动电压，并将获得的驱动电压提供给每个相应的定子线圈;速度控制信号发生电路用于产生用于控制无刷电动机的转速的速度控制信号;以及磁传感器控制器，用于响应于速度控制信号控制每个磁传感器的输出电压的大小，使得每个磁传感器的输出电压根据速度控制信号的值。

3. 发明授权

US5331341A Image forming apparatus 失效
标题翻译：图像形成装置
公开(公告)号：US5331341A
公开(公告)日：1994-07-19
申请号：US794892
申请日：1991-11-20
申请人： Jiro Egawa , Kenichi Komiya , Kyoichi Okada , Hideo Mori , Hirokazu Izawa
发明人： Jiro Egawa , Kenichi Komiya , Kyoichi Okada , Hideo Mori , Hirokazu Izawa
IPC分类号： B41J2/44 , B41J2/47 , G02B26/12 , G03G15/01 , G03G15/04 , G03G15/16 , G03G21/14 , G06K15/12 , H04N1/047 , H04N1/113 , H04N1/12 , H04N1/23 , H04N1/21 , B41J2/435
CPC分类号： G06K15/129 , B41J2/473 , H04N1/047 , H04N1/1135 , H04N1/12 , H04N2201/04729 , H04N2201/04731 , H04N2201/04789 , H04N2201/04791
摘要： An image forming apparatus includes a scanner for scanning a light beam over an image carrier, an image forming unit for forming an image on the image carrier corresponding to the light beam scanned over the image carrier by the scanner and a movable supporting member for supporting an image forming medium and conveying the image forming medium to a position where the image on the image carrier is transferred to the image forming medium. The image forming apparatus further includes a first driver for driving the scanner, a second driver for driving the image carrier, a third driver for driving the supporting member, a generator for generating a reference signal, a first controller for controlling the first driver to regulate the scanning speed of the scanner based on the reference signal generated by the generator and a second controller for controlling the second driver to regulate the moving speed of the image carrier based on the reference signal generated by the generator and a third controller for controlling the third driver to regulate the moving speed of the supporting member based on the reference signal generated by the generator.
摘要翻译：一种图像形成装置包括用于扫描图像载体上的光束的扫描仪，用于在扫描仪上对与图像载体上扫描的光束相对应的图像载体上形成图像的图像形成单元和用于支撑扫描仪的可移动支撑构件图像形成介质，并将图像形成介质传送到图像载体上的图像被转印到图像形成介质的位置。图像形成装置还包括用于驱动扫描仪的第一驱动器，用于驱动图像载体的第二驱动器，用于驱动支撑构件的第三驱动器，用于产生参考信号的发生器，用于控制第一驱动器调节的第一控制器基于由发电机产生的参考信号的扫描仪的扫描速度和用于根据由发生器产生的参考信号控制第二驱动器来调节图像载体的移动速度的第二控制器，以及用于控制第三驱动器的第三控制器驱动器，以基于由发电机产生的参考信号来调节支撑构件的移动速度。

4. 发明授权

US4930087A Image forming apparatus 失效
标题翻译：图像形成装置
公开(公告)号：US4930087A
公开(公告)日：1990-05-29
申请号：US230021
申请日：1988-08-09
申请人： Jiro Egawa , Koji Tanimoto , Kunihiko Miura
发明人： Jiro Egawa , Koji Tanimoto , Kunihiko Miura
IPC分类号： G06K15/00
CPC分类号： G06K15/00 , G06K2215/0005 , G06K2215/0017 , G06K2215/0077 , Y10S347/90
摘要： An image forming apparatus has a printing side and a host side. Status signals are transmitted from the printing side to the host side and, according to the status signals, commands are transmitted from the host side to the printing side to execute printing operations. One exclusive line is added to status lines and used to inform the host side of changes in urgent statuses of the printing side.According to another aspect, an image forming apparatus has a printing side and a host side that transmits various data signals to the printing side. The printing side outputs a video clock signal whose frequencey changes in proportion to a recording density of the printing side. According to the video clock signal, the host side transmits a video data signal to the printing side.
摘要翻译：图像形成装置具有打印侧和主机侧。状态信号从打印侧发送到主机侧，并且根据状态信号，从主机侧向打印侧发送命令以执行打印操作。一条专用线被添加到状态线，用于通知主机侧打印方的紧急状态的变化。根据另一方面，图像形成装置具有向打印侧发送各种数据信号的打印侧和主机侧。打印面输出其频率与打印面的记录密度成比例地变化的视频时钟信号。根据视频时钟信号，主机侧向打印面发送视频数据信号。

5. 发明授权

US5321468A Image forming apparatus having inference means and method of manufacturing the same 失效
标题翻译：具有推理装置的图像形成装置及其制造方法
公开(公告)号：US5321468A
公开(公告)日：1994-06-14
申请号：US035953
申请日：1993-03-23
申请人： Rintaro Nakane , Jiro Egawa
发明人： Rintaro Nakane , Jiro Egawa
IPC分类号： B41J2/52 , G03G15/00 , G03G15/01 , G03G15/02 , G03G15/04 , G03G15/043 , G03G15/06 , G03G15/08 , G03G21/00 , H04N1/29
CPC分类号： G03G15/50 , G03G15/5041 , G03G2215/00042 , G03G2215/00118 , Y10S706/90
摘要： In an image forming apparatus of the present invention, the adhesion amounts of developing agent on a high-density test pattern and a low-density test pattern are measured by a toner density measuring unit. On the basis of the measured adhesion amounts of developing agent on the high-density region and low-density region and the target values of the adhesion amounts, deviations of the adhesion amounts of the high-density region and the low density region are calculated. The renewal amount of contrast voltage and the renewal amount of background voltage corresponding to the high-density region deviation and low-density region deviation are inferred by an inference unit on the basis of inference data stored in a memory unit. The grid bias value and development bias value corresponding to the inferred renewal amounts of contrast voltage and background voltage are calculated. The grid bias voltage and development bias voltage are varied in accordance with the calculated grid bias value and development bias value.
摘要翻译：在本发明的图像形成装置中，通过调色剂浓度测量单元测量显影剂对高密度测试图案和低密度测试图案的粘附量。基于显影剂在高密度区域和低密度区域的测量的粘附量和粘附量的目标值，计算高密度区域和低密度区域的粘合量的偏差。基于存储在存储器单元中的推理数据，推断单元推断对比度电压的更新量和对应于高密度区域偏差和低密度区域偏差的背景电压的更新量。计算对应于对比度电压和背景电压的推断更新量的电网偏置值和显影偏压值。电网偏置电压和显影偏压根据计算的电网偏置值和开发偏压值而变化。

6. 发明授权

US5270784A Image forming apparatus having means for measuring the amount of developing agent on the image carrier 失效
标题翻译：图像形成装置具有用于测量图像载体上显影剂量的装置
公开(公告)号：US5270784A
公开(公告)日：1993-12-14
申请号：US935276
申请日：1992-08-29
申请人： Rintaro Nakane , Jiro Egawa
发明人： Rintaro Nakane , Jiro Egawa
IPC分类号： B41J2/44 , G03G15/00 , G03G15/01 , G03G15/08 , G03G21/00
CPC分类号： G03G15/5041 , G03G2215/00042
摘要： An image forming apparatus includes a measuring for measuring an amount of a toner agent deposited on the image carrier. The measuring device has measuring section facing the image carrier, and a conductive cover plate arranged between the measuring section and the image carrier. The cover plate is applied with a voltage whose polarity is equal to the polarity of the toner so that an electric field is generated between the image carrier and the cover plate. The electric field prevents the toner, dispersed from the image carrier, from reaching the measuring section. The toner may also be kept from adhering to the elements of the measuring section by placing a transparent plate between the image carrier and the measuring device.
摘要翻译：图像形成装置包括用于测量沉积在图像载体上的调色剂的量的测量。测量装置具有面向图像载体的测量部分和布置在测量部分和图像载体之间的导电盖板。盖板施加极性等于调色剂极性的电压，使得在图像载体和盖板之间产生电场。电场防止从图像载体分散的调色剂到达测量部分。通过将透明板放置在图像载体和测量装置之间，调色剂也可以防止粘附到测量部件的元件上。

7. 发明授权

US5225850A Apparatus for controlling intensity of laser beam emitted from semiconductor laser unit 失效
标题翻译：用于控制从半导体激光单元发射的激光束的强度的装置
公开(公告)号：US5225850A
公开(公告)日：1993-07-06
申请号：US634519
申请日：1990-12-27
申请人： Jiro Egawa , Naoaki Ide
发明人： Jiro Egawa , Naoaki Ide
IPC分类号： B41J2/44 , G03G15/04 , G06K15/12 , H01S3/101 , H01S5/0683 , H04N1/113
CPC分类号： G06K15/1214 , H01S5/0683
摘要： In an apparatus for adjusting the intensity of a light beam, the light beam from a semiconductor laser is deflected to scan a photosensitive drum and is detected to generate a positional signal by a photodetector outside of the drum. The intensity of the light beam is also detected by a monitor detector and compared with a predetermined value. The comparison result is latched in a latch circuit in accordance with the positional signal and the semiconductor laser is controlled depending on the latched comparison result.
摘要翻译：在用于调节光束强度的装置中，来自半导体激光器的光束被偏转以扫描感光鼓，并且被检测为通过在鼓外部的光电检测器产生位置信号。光束的强度也由监视器检测器检测，并与预定值进行比较。比较结果根据位置信号锁存在锁存电路中，并根据锁存的比较结果来控制半导体激光器。

8. 发明授权

US4903051A Image forming apparatus for controlling developer to be replenished in accordance with density of developer 失效
标题翻译：用于根据显影剂的密度控制显影剂补充的图像形成装置
公开(公告)号：US4903051A
公开(公告)日：1990-02-20
申请号：US222704
申请日：1988-07-21
申请人： Jiro Egawa , Osamu Kenmochi
发明人： Jiro Egawa , Osamu Kenmochi
IPC分类号： G03G15/08
CPC分类号： G03G15/0855 , G03G15/0856 , G03G15/0887 , G03G15/5041
摘要： A laser printer includes a plurality of lenses and mirrors for scanning a laser beam to form an optical image on a photoconductive drum, a developing unit for storing a developer for developing an electrostatic latent image formed on the drum by the plurality of lenses and mirrors, and an image transfer section for transferring the image developed by the developing unit onto paper. The developer is a two-component developer consisting of a toner and a carrier. The toner densities of toner adhered to a toner hopper for replenishing the toner stored in the developing unit and of that adhered to a toner density detecting probe coaxially attached to the drum are measured by utilizing a light-emitting diode and a photodiode. In a CPU, a toner density measured by the light-emitting diode and the photodiode is compared with a first reference value, and then the measured density value is compared with a second reference value which is smaller than the first reference value. When the measured density value is smaller than the first reference value, the replenishment toner is controlled to be replenished from the toner hopper to the developing unit. When the measured density value is smaller than the second reference value, the CPU stops the image forming operation, and at the same time, informs that the replenishment toner in the toner hopper is empty using an operation display section.
摘要翻译：激光打印机包括用于扫描激光束以在感光鼓上形成光学图像的多个透镜和反射镜，用于存储用于通过多个透镜和反射镜显影形成在滚筒上的静电潜像的显影剂的显影单元，以及用于将由显影单元显影的图像转印到纸上的图像转印部分。显影剂是由调色剂和载体组成的双组分显影剂。通过利用发光二极管和光电二极管来测量粘附到调色剂料斗上的调色剂调色剂浓度，用于补充存储在显影单元中的调色剂和粘附到同轴连接到滚筒上的调色剂浓度检测探针。在CPU中，将由发光二极管和光电二极管测量的调色剂浓度与第一参考值进行比较，然后将测量的浓度值与小于第一参考值的第二参考值进行比较。当测量的密度值小于第一参考值时，补充调色剂被控制以从调色剂料斗补充到显影单元。当测量的密度值小于第二参考值时，CPU停止成像操作，同时使用操作显示部分通知调色剂料斗中的补充调色剂是空的。

9. 发明授权

US5130524A Apparatus for controlling intensity of laser beam emitted from semiconductor laser unit 失效
标题翻译：用于控制从半导体激光单元发射的激光束的强度的装置
公开(公告)号：US5130524A
公开(公告)日：1992-07-14
申请号：US634557
申请日：1990-12-27
申请人： Jiro Egawa , Naoaki Ide
发明人： Jiro Egawa , Naoaki Ide
IPC分类号： B41J2/44 , G02B26/10 , G03G15/04 , G06K15/12 , H01S3/101 , H01S5/068 , H04N1/113 , H04N1/407
CPC分类号： H01S5/06825 , G06K15/1214 , H04N1/4076
摘要： In an apparatus for adjusting the intensity of a light beam, a driving current which is gradually increased is supplied to a semiconductor laser in a warming-up mode. The intensity of the light beam is detected by a monitor detector and compared with a predetermined value. The comparison result is latched in a first latch circuit and a preset drive data is determined in accordance with the latched comparison data and stored in a memory. The semiconductor laser is driven in a printing mode, in accordance with the preset drive data stored in the memory mode so that a printing condition can be established in a relatively short time. In the printing mode, the intensity of the light beam is adjusted in accordance with the comparison result obtained in the printing mode.
摘要翻译：在用于调整光束强度的装置中，逐渐增加的驱动电流在预热模式中被提供给半导体激光器。光束的强度由监视器检测器检测，并与预定值进行比较。比较结果被锁存在第一锁存电路中，并且根据锁存的比较数据确定预设的驱动数据并将其存储在存储器中。根据存储在存储器模式中的预设驱动数据，以打印模式驱动半导体激光器，从而可以在较短的时间内建立打印条件。在打印模式中，根据在打印模式中获得的比较结果来调整光束的强度。

10. 发明授权

US4876560A Recording apparatus 失效
标题翻译：记录装置
公开(公告)号：US4876560A
公开(公告)日：1989-10-24
申请号：US232222
申请日：1988-08-15
申请人： Jiro Egawa , Naruhito Yoshida , Toshihiro Kasai , Moriya Nagasawa , Naoaki Ide , Hironobu Machida
发明人： Jiro Egawa , Naruhito Yoshida , Toshihiro Kasai , Moriya Nagasawa , Naoaki Ide , Hironobu Machida
IPC分类号： B41J2/44 , G03G15/00 , G03G15/01 , G03G15/04 , G03G15/08
CPC分类号： G03G15/50 , G03G15/01 , G03G15/08
摘要： A recording apparatus according to the present invention in which a data is recorded by charging a driven recording medium, scanning laser beams on the driven recording medium to form electrostatic latent images thereon, and developing and transferring the electrostatic latent image, comprises a charger for charging the driven recording medium; and at least two image forming device disposed around the recording medium for recording multi-colored and/or uni-colored data in a plurality of print modes. In the recording apparatus, the print modes is controlled so as to drive the second image forming device corresponding to the second print mode after the operation of the first print mode is closed, when the second print mode is designated in the operation of the first image forming means corresponding to the first print mode. And, the driver for driving the recording medium is controlled so as to continuously drive the recording medium when the first print mode is switched to the second print mode by the switching device. The image forming device comprises device for forming an electrostatic latent image on the recording medium by scanning laser beams in accordance with the recording data and device for developing the electrostatic latent image.
摘要翻译：根据本发明的记录装置，其中通过对驱动记录介质进行充电来记录数据，在驱动记录介质上扫描激光束以在其上形成静电潜像，以及显影和转印静电潜像，包括用于充电的充电器驱动记录介质; 以及设置在记录介质周围的用于以多种打印模式记录多色和/或单色数据的至少两个图像形成装置。在记录装置中，在第一打印模式的操作关闭之后，控制打印模式以驱动与第二打印模式对应的第二图像形成装置，当在第一图像的操作中指定第二打印模式时对应于第一打印模式的形成装置。并且，通过开关装置将第一打印模式切换为第二打印模式时，控制用于驱动记录介质的驱动器，以便连续地驱动记录介质。图像形成装置包括：通过根据记录数据扫描激光束和用于显影静电潜像的装置在记录介质上形成静电潜像的装置。

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