公开(公告)号：US5315352A

公开(公告)日：1994-05-24

申请号：US900450

申请日：1992-06-18

申请人： Rintaro Nakane ,  Jiro Egawa

发明人： Rintaro Nakane ,  Jiro Egawa

IPC分类号： G03G15/00 ,  G03G21/00

CPC分类号： G03G15/5041 ,  G03G2215/00042

摘要： An image forming apparatus, in accordance with the present invention, forms a color image on an image bearing member. The image forming apparatus includes a charging device for electrically charging the image bearing member, an exposing device for exposing a light beam on the image bearing member so as to form a latent image on the charged image bearing member corresponding to image data to be formed, and a developing device for developing the latent image formed on the image bearing member with a developing agent including toner. The image forming apparatus also includes a detecting device for detecting the amount of toner attached to the image bearing member by the developing device, an estimating device for estimating the amount of toner attached to the image bearing member in accordance with image data to be formed, and a control device for controlling the charging device, the exposing device and the developing device in accordance with the detected toner attaching amount and the estimated toner attaching amount so as to stabilize image density changes of the image formed on the image bearing member. Thereby, the image forming apparatus of the present invention can correct for image density variations due to a change in the operating environment or a deterioration over time independently of the conventional maintenance of image forming materials and processes, and forms an image having a stable high image density.

摘要翻译： 根据本发明的图像形成装置在图像承载部件上形成彩色图像。 图像形成装置包括用于对图像承载部件充电的充电装置，用于将图像承载部件上的光束曝光以在与要形成的图像数据对应的带电图像承载部件上形成潜像的曝光装置， 以及显影装置，用于利用包括调色剂的显影剂使形成在图像承载部件上的潜像显影。 图像形成装置还包括用于检测由显影装置附着到图像承载部件的调色剂量的检测装置，用于根据要形成的图像数据估计附着到图像承载部件的调色剂量的估计装置， 以及控制装置，用于根据检测到的调色剂附着量和估计的调色剂附着量来控制充电装置，曝光装置和显影装置，以便稳定图像承载部件上形成的图像的图像浓度变化。 因此，本发明的图像形成装置可以独立于图像形成材料和处理的常规维护来校正由于操作环境的变化或随着时间的劣化而导致的图像浓度变化，并且形成具有稳定的高图像的图像 密度。

公开(公告)号：US5264870A

公开(公告)日：1993-11-23

申请号：US791506

申请日：1991-11-14

申请人： Jiro Egawa

发明人： Jiro Egawa

IPC分类号： B41J2/44 ,  G02B26/10 ,  G03G15/01 ,  G03G15/04 ,  G03G15/043 ,  G03G15/16 ,  G03G21/14 ,  H04N1/04 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  H04N1/21 ,  B41J2/47

CPC分类号： H04N1/047 ,  G03G2215/0119 ,  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 and 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 and 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，用于驱动图像载体和支撑构件的第二驱动器，用于产生参考信号的发生器，用于控制第一驱动器以调节第一驱动器的扫描速度的第一控制器 基于由发电机产生的参考信号的扫描器和用于根据由发生器产生的参考信号来控制第二驱动器来调节图像载体和支撑构件的移动速度的第二控制器。

公开(公告)号：US5196886A

公开(公告)日：1993-03-23

申请号：US855871

申请日：1992-03-23

申请人： Rintaro Nakane ,  Jiro Egawa ,  Shigeru Fujiwara

发明人： Rintaro Nakane ,  Jiro Egawa ,  Shigeru Fujiwara

IPC分类号： B41J2/44 ,  G03G15/00 ,  G03G15/01 ,  G03G15/02 ,  G03G15/08

CPC分类号： G03G15/5041 ,  G03G15/0849 ,  G03G15/0855 ,  G03G15/5037 ,  G03G2215/00042

摘要： A toner sensor measures the amount of toner attached onto a photosensitive drum upon development by a developing unit. A controller compares the measured toner attaching amount with a predetermined reference value, and executes processing for changing at least one of image forming conditions, for example, the charging amount by a charger, the developing bias voltage of the developing unit, the exposure amount of an optical system, and the toner density of the developing unit, on the basis of the comparison result. Besides the above, a shielding member is provided and is opened only during a measurement mode of the toner sensor in order to prevent the toner sensor from being contaminated by toner during a non-measurement mode.

公开(公告)号：US5159184A

公开(公告)日：1992-10-27

申请号：US634436

申请日：1990-12-27

申请人： Jiro Egawa ,  Kunihiko Miura

发明人： Jiro Egawa ,  Kunihiko Miura

IPC分类号： H01S5/068 ,  G06K15/12

CPC分类号： G06K15/1219 ,  G06K15/1209

摘要： In an apparatus for adjusting the intensity of a light beam, a first driving current which is stepwisely increased in a first cycle is supplied to a semiconductor laser. The light beam 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 target intensity. The comparison result is latched in a latch circuit to determine a first drive signal. When the intensity of the light beam reaches the target intensity after the generation of the positional signal, a second drive signal is generated in a second cycle longer than the first cycle instead of the first drive signal and is supplied to the semiconductor laser. The second drive signal is determined in accordance with the comparison result latched in the latch circuit.

摘要翻译： 在用于调整光束强度的装置中，向半导体激光器提供在第一周期中逐步增加的第一驱动电流。 光束被偏转以扫描感光鼓，并且被检测为通过在鼓外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，并与预定的目标强度进行比较。 比较结果被锁存在锁存电路中以确定第一驱动信号。 当在产生位置信号之后光束的强度达到目标强度时，在比第一周期长的第二周期而不是第一驱动信号中产生第二驱动信号，并将其提供给半导体激光器。 根据锁存在锁存电路中的比较结果确定第二驱动信号。

公开(公告)号：US5136160A

公开(公告)日：1992-08-04

申请号：US659225

申请日：1991-02-22

申请人： Rintaro Nakane ,  Jiro Egawa

发明人： Rintaro Nakane ,  Jiro Egawa

IPC分类号： G02B26/10 ,  B41J2/44 ,  G02B26/12 ,  G06K15/12 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12

CPC分类号： H04N1/053 ,  G02B26/127 ,  G06K15/1204 ,  G06K15/1214 ,  G06K15/1219 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471

摘要： In an optical unit, a light beam is emitted from a light source toward a given object. Part of the light beam is reflected by a reflecting mirror and is returned to a monitor diode which is incorporated in the light source. The reflecting mirror is arranged in an optical path along which the light beam is directed from the light source to the object, but is located outside of an image region containing an optical axis and expanding in the main scanning direction. By use of the light beam returned to the monitor diode, the deflection start position from which the light beam emitted from the light source is deflected is detected. In other words, the deflection start timing is detected. A variation in the monitor current produced by the monitor diode is utilized for controlling the light source, to thereby match the horizontal synchronization.

摘要翻译： 在光学单元中，从光源向给定物体发射光束。 光束的一部分被反射镜反射并返回到结合在光源中的监视二极管。 反射镜被布置在光束从光源引导到物体的光路中，但位于包含光轴并在主扫描方向上扩展的图像区域的外侧。 通过使用返回到监视二极管的光束，检测从光源发射的光束偏转的偏转开始位置。 换句话说，检测偏转开始定时。 由监视二极管产生的监视电流的变化用于控制光源，从而使水平同步化。

公开(公告)号：US5134623A

公开(公告)日：1992-07-28

申请号：US634456

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 ,  H01S3/101 ,  H01S5/06 ,  H01S5/062 ,  H01S5/0683 ,  H04N1/113

CPC分类号： H01S5/0683 ,  H01S5/0617 ,  H01S5/06209

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 generated a positional signal by 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 first latch circuit in accordance with the positional signal and a driving data is determined in accordance with the latched comparison data. The driving data is also latched in a second latch circuit and the semiconductor laser is controlled depending on the latched driving data.

摘要翻译： 在用于调整光束强度的装置中，来自半导体激光器的光束被偏转以扫描感光鼓，并且被检测为通过光电检测器在鼓外部产生位置信号。 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第一锁存电路中，根据锁存的比较数据确定驱动数据。 驱动数据也被锁存在第二锁存电路中，并且根据锁存的驱动数据来控制半导体激光器。

公开(公告)号：US4885596A

公开(公告)日：1989-12-05

申请号：US232281

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 recording medium, scanning laser beams on the recording medium to form electrostatic latent images thereon, and developing and transferring the electrostatic latent image, comprises a charger for charging the 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，其中通过对记录介质充电来记录数据，在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，包括用于对记录进行充电的充电器 中; 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。

公开(公告)号：US4735408A

公开(公告)日：1988-04-05

申请号：US918117

申请日：1986-10-14

申请人： Mitsuo Yamashita ,  Kiyoshi Tomimori ,  Jiro Egawa

发明人： Mitsuo Yamashita ,  Kiyoshi Tomimori ,  Jiro Egawa

IPC分类号： B65H31/34 ,  B65H33/08 ,  G03G15/00 ,  B65H29/20

CPC分类号： G03G15/6538 ,  B65H31/34 ,  B65H33/08 ,  B65H2301/3332 ,  B65H2405/351

摘要： A recording apparatus records an image impression of an original on a sheet. The recording apparatus comprises a flip lever arranged to oppose a distal end of a first convey path for conveying the sheet recorded by a recording mechanism. The flip lever is movable between the first position where the sheet conveyed along the first convey path is guided in a second convey path and a second position where the sheet is guided in a third convey path. A temporary stacking tray is arranged to oppose a distal end of the second convey path and temporarily stacks the sheet guided by the flip lever from the first convey path to the second convey path while the first surface of the sheet faces upward. In front of the temporary stacking tray, an inverting mechanism is provided for conveying the sheet temporarily stacked on the temporary stacking tray to the third convey path through a fourth convey path without passing through the flip lever while the second surface opposing the first surface faces upward.

摘要翻译： 记录装置将原稿的图像印象记录在纸上。 记录装置包括翻转杆，其设置成与用于传送由记录机构记录的片材的第一传送路径的远端相对。 翻转杆可在第一位置和第二位置之间移动，在第一位置，第一位置沿着第一传送路径传送的片材在第二传送路径中被引导，而第二位置在片材被引导在第三传送路径中。 临时堆垛托架布置成与第二输送路径的远端相对，并且将由翻转杆引导的片材从第一输送路径临时堆叠到第二输送路径，同时片材的第一表面向上。 在临时堆垛托盘的前面，提供翻转机构，用于将临时堆叠在临时堆垛盘上的片材通过第四传送路径传送到第三传送路径而不通过翻转杆，而与第一表面相对的第二表面面向上 。

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。

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。