公开(公告)号：US5146275A

公开(公告)日：1992-09-08

申请号：US625850

申请日：1990-12-11

申请人： Eiichi Tone ,  Yosuke Ohata ,  Kazuto Hori

发明人： Eiichi Tone ,  Yosuke Ohata ,  Kazuto Hori

IPC分类号： G03G15/00 ,  G03G15/04 ,  H04N1/387

CPC分类号： G03G15/605 ,  G03G15/04018 ,  H04N1/3871 ,  H04N1/3873 ,  H04N1/3875

摘要： A composite image forming apparatus including an analog or a digital image forming apparatus of the type in which an optical system moves relative to a document placed on a document table, the image on the document is scanned by the optical system and the image is transferred to a sheet of image transferring paper and a belt like recording medium on which additional or optional images from which additional or optional images other than the document image can be transferred to the sheet of image transferring paper.

公开(公告)号：US20060093387A1

公开(公告)日：2006-05-04

申请号：US11262950

申请日：2005-11-01

申请人： Kazuto Hori

发明人： Kazuto Hori

IPC分类号： G03G15/043

CPC分类号： G03G15/043 ,  G03G2215/00084

摘要： In a laser beam printer, even when an inexpensive CPU having low throughput capacity is used, stable power can be obtained by following a sudden change in temperature of a laser chip. A control unit sets a scanning cycle for performing the automatic power control based on ambient temperature of a photoconductive drum and the number of continuously-printed sheets. Then, the control unit output a horizontal synchronizing signal to a laser driving circuit and causes a laser scan unit to output a scanning laser beam. Substantially, when scanning corresponds the scanning cycle, the automatic power control is performed based on an output signal of a photodiode. When scanning does not correspond to the scanning cycle, a horizontal synchronizing signal of the next line is output. Whereby, the scanning cycle for performing the automatic power control according to a change in temperature of the laser chip, thereby reducing loads applied to the control unit.

摘要翻译： 在激光束打印机中，即使使用廉价的具有低吞吐能力的CPU，也可以通过跟随激光芯片的温度突然变化来获得稳定的功率。 控制单元基于感光鼓的环境温度和连续打印的片材的数量设置用于执行自动功率控制的扫描周期。 然后，控制单元向激光驱动电路输出水平同步信号，并使激光扫描单元输出扫描激光束。 基本上，当扫描对应于扫描周期时，基于光电二极管的输出信号执行自动功率控制。 当扫描不对应于扫描周期时，输出下一行的水平同步信号。 由此，用于根据激光芯片的温度变化执行自动功率控制的扫描周期，从而减少施加到控制单元的负载。

公开(公告)号：US5517283A

公开(公告)日：1996-05-14

申请号：US63567

申请日：1993-05-19

申请人： Kazuto Hori ,  Sadao Tanigawa

发明人： Kazuto Hori ,  Sadao Tanigawa

IPC分类号： G03G21/00 ,  G03G15/00 ,  G03G15/06 ,  G03G15/08

CPC分类号： G03G15/5041 ,  G03G2215/00042

摘要： An image forming apparatus capable of detecting a toner image density well by shifting a developing bias. In adjusting a fog density or a solid density, the developing bias is shifted by a specified width so as to form an image of a gray density. This enables detection of the fog density and the solid density to be replaced with detection of a density in a gray density region where a reflection type photosensor can detect a density with high sensitivity. Thus, densities in a fog or solid density region where usually an output from the reflection type photosensor is saturated can be detected with high accuracy.

摘要翻译： 能够通过移动显影偏压来良好地检测调色剂图像浓度的图像形成装置。 在调整雾密度或固体密度时，将显影偏压移动指定的宽度，以形成灰度密度的图像。 这样可以通过检测灰度密度区域中的浓度来检测雾密度和固体密度，其中反射型光电传感器可以以高灵敏度检测密度。 因此，可以高精度地检测通常反射型光电传感器的输出饱和的雾或固体密度区域的密度。

公开(公告)号：US5477312A

公开(公告)日：1995-12-19

申请号：US262661

申请日：1994-06-20

申请人： Kazuto Hori

发明人： Kazuto Hori

IPC分类号： G03G15/00 ,  G03G21/00

CPC分类号： G03G15/5041

摘要： A method of controlling image density includes imaging a pattern of reference density as a toner image on a photoconductor. The density of the toner image is detected by a reflection-type photosensor, and parameters on the image density are adjusted based upon the results of this detection. In this invention, prior to measuring the reference density toner image, the drive current for the reflection-type photosensor is varied, and output from the reflection-type photosensor is measured while no toner is present on the photoconductor. A reference value of the drive current for the reflection-type photosensor which permits output from the reflection-type photosensor to be a predetermined value is determined. Then, the drive current for the reflection-type photosensor for measuring the reference density toner image is set based on the reference drive current value.

摘要翻译： 控制图像浓度的方法包括将参考密度图案作为感光体上的调色剂图像进行成像。 调色剂图像的浓度由反射型光电传感器检测，并根据该检测结果调整图像浓度参数。 在本发明中，在测量参考浓度调色剂图像之前，反射型光电传感器的驱动电流是变化的，并且在光电导体上不存在调色剂的同时测量反射型光电传感器的输出。 确定允许从反射型光电传感器输出的反射型光电传感器的驱动电流的参考值为预定值。 然后，基于参考驱动电流值设定用于测量基准浓度调色剂图像的反射型光电传感器的驱动电流。

公开(公告)号：US07453484B2

公开(公告)日：2008-11-18

申请号：US11262950

申请日：2005-11-01

申请人： Kazuto Hori

发明人： Kazuto Hori

IPC分类号： B41J2/435

CPC分类号： G03G15/043 ,  G03G2215/00084

摘要： In a laser beam printer, even when an inexpensive CPU having low throughput capacity is used, stable power can be obtained by following a sudden change in temperature of a laser chip. A control unit sets a scanning cycle for performing the automatic power control based on ambient temperature of a photoconductive drum and the number of continuously-printed sheets. Then, the control unit output a horizontal synchronizing signal to a laser driving circuit and causes a laser scan unit to output a scanning laser beam. Substantially, when scanning corresponds the scanning cycle, the automatic power control is performed based on an output signal of a photodiode. When scanning does not correspond to the scanning cycle, a horizontal synchronizing signal of the next line is output. Whereby, the scanning cycle for performing the automatic power control according to a change in temperature of the laser chip, thereby reducing loads applied to the control unit.

摘要翻译： 在激光束打印机中，即使使用廉价的具有低吞吐能力的CPU，也可以通过跟随激光芯片的温度突然变化来获得稳定的功率。 控制单元基于感光鼓的环境温度和连续打印的片材的数量设置用于执行自动功率控制的扫描周期。 然后，控制单元向激光驱动电路输出水平同步信号，并使激光扫描单元输出扫描激光束。 基本上，当扫描对应于扫描周期时，基于光电二极管的输出信号执行自动功率控制。 当扫描不对应于扫描周期时，输出下一行的水平同步信号。 由此，用于根据激光芯片的温度变化执行自动功率控制的扫描周期，从而减少施加到控制单元的负载。

公开(公告)号：US5396314A

公开(公告)日：1995-03-07

申请号：US989512

申请日：1992-12-11

申请人： Yasushi Umeda ,  Tetsuo Tomiyama ,  Hiroyuki Yoshikawa ,  Yuichi Koike ,  Yoshiki Shimomura ,  Kazuto Hori ,  Sadao Tanigawa

发明人： Yasushi Umeda ,  Tetsuo Tomiyama ,  Hiroyuki Yoshikawa ,  Yuichi Koike ,  Yoshiki Shimomura ,  Kazuto Hori ,  Sadao Tanigawa

IPC分类号： B41J29/46 ,  G03G15/00 ,  G03G21/00 ,  G05B9/02 ,  G05B9/03 ,  G06F11/00 ,  G06F11/25 ,  H04N1/00 ,  G03G15/02 ,  G03G15/04

CPC分类号： G03G15/50 ,  G03G15/55 ,  G05B9/03 ,  G06F11/2257 ,  G06F11/2038

摘要： An image forming apparatus has a functional redundancy system by which an inherent function normally performed by a certain portion is performed as a potential function by another portion, when such certain portion no longer can be perform its inherent function. In a first operative sequence, portions in the image forming apparatus perform their respective inherent functions. However, where a function of a certain portion in the apparatus is lost, for example, where a fault occurs and a particular element has failed, operation of other portions in the apparatus are controlled according to a second sequence. In the second sequence, the inherent function of the portion which has failed is replaced by the potential function of another portion in the apparatus.

摘要翻译： 图像形成装置具有功能冗余系统，通过该功能冗余系统，当某一部分不再能够执行其固有功能时，由某一部分正常执行的固有功能作为其他部分的潜在功能被执行。 在第一操作顺序中，图像形成装置中的部分执行它们各自的固有功能。 然而，在设备中某个部分的功能丢失的情况下，例如，发生故障并且特定元件发生故障的情况下，根据第二顺序来控制设备中其他部分的操作。 在第二个序列中，故障部分的固有功能由设备中另一部分的潜在功能代替。

公开(公告)号：US5369473A

公开(公告)日：1994-11-29

申请号：US67210

申请日：1992-05-24

申请人： Kazuhiro Ogawa ,  Kazuto Hori

发明人： Kazuhiro Ogawa ,  Kazuto Hori

IPC分类号： G03G15/00 ,  G03G15/02 ,  G03G21/00

CPC分类号： G03G15/5041 ,  G03G2215/00042 ,  G03G2215/00054 ,  G03G2215/00075

摘要： An image forming apparatus is provided with a rotatable photosensitive member; an imaging assembly for exposing the surface of the photosensitive member to light so as to form an electrostatic latent image thereon and developing the electrostatic latent image; and a sensor arranged in the vicinity of and opposed to the surface of the photosensitive member, and adapted for detecting an imaging performance in a specific region on the surface of the photosensitive member. With the image forming apparatus thus constructed, measurement values vary only within a reduced range since an imaging performance of the photosensitive member is detected in a specific region on the photosensitive member.

摘要翻译： 图像形成装置设置有可旋转感光构件; 用于将感光构件的表面暴露于光以便在其上形成静电潜像并显影静电潜像的成像组件; 以及布置在感光构件的表面附近并与感光构件的表面相对并且适于检测感光构件表面上的特定区域中的成像性能的传感器。 利用如此构造的图像形成装置，由于在感光构件的特定区域中检测到感光构件的成像性能，所以测量值仅在减小的范围内变化。

公开(公告)号：US07595813B2

公开(公告)日：2009-09-29

申请号：US11713001

申请日：2007-03-02

申请人： Kazuto Hori

发明人： Kazuto Hori

IPC分类号： B41J2/385 ,  B41J2/41 ,  B41J27/00 ,  B41J2/435

CPC分类号： H04N1/1135 ,  G03G15/04072 ,  G03G15/0435 ,  H04N1/032 ,  H04N2201/02418 ,  H04N2201/02427 ,  H04N2201/02441 ,  H04N2201/02483

摘要： In an image forming apparatus (1) utilizing electrophotographic technology, position and posture of a laser scan unit (5) with respect top a frame (13) is adjusted easily without cost rise and upsizing of the apparatus. Semicircular recesses (53) and an elongate hole (54) are formed at each of three fixing portions (52a, 52b and 52c) in the vicinities of side faces (51b) and a rear face (51c) of a housing (51) of the laser scan unit (5), and an adjuster 30 serving as a spacer is attached to each of the fixing portions (52a, 52b and 52c). Each adjuster (30) is elected among a plurality of kinds of adjustors respectively having different thicknesses manufactured by press working of metal plates commercially produced and having different thicknesses with using the same dies. The adjustor has a pair of semicircular engaging portions 30b and a coupling portion 30a perpendicular to and coupling the engaging portions (30b).

摘要翻译： 在利用电子照相技术的图像形成设备（1）中，相对于框架（13），激光扫描单元（5）的位置和姿势被容易地调节，而不会增加设备的大小。 在三个固定部分（52a，52b和52c）的每个侧面（51b）和壳体（51）的侧面（51b）和后面（51c）附近形成有半圆形凹部53和长孔54， 激光扫描单元（5）和用作间隔物的调节器30附接到每个固定部分（52a，52b和52c）。 每个调节器（30）在具有不同厚度的多种调节器中选出，所述多个调节器通过使用相同的模具商业生产和具有不同厚度的金属板的冲压加工制造。 调节器具有一对半圆形接合部分30b和垂直于并联接接合部分（30b）的联接部分30a。

公开(公告)号：US20070211136A1

公开(公告)日：2007-09-13

申请号：US11713001

申请日：2007-03-02

申请人： Kazuto Hori

发明人： Kazuto Hori

IPC分类号： B41J2/45

CPC分类号： H04N1/1135 ,  G03G15/04072 ,  G03G15/0435 ,  H04N1/032 ,  H04N2201/02418 ,  H04N2201/02427 ,  H04N2201/02441 ,  H04N2201/02483

摘要： In an image forming apparatus (1) utilizing electrophotographic technology, position and posture of a laser scan unit (5) with respect top a frame (13) is adjusted easily without cost rise and upsizing of the apparatus. Semicircular recesses (53) and an elongate hole (54) are formed at each of three fixing portions (52a, 52b and 52c) in the vicinities of side faces (51b) and a rear face (51c) of a housing (51) of the laser scan unit (5), and an adjuster 30 serving as a spacer is attached to each of the fixing portions (52a, 52b and 52c). Each adjuster (30) is elected among a plurality of kinds of adjustors respectively having different thicknesses manufactured by press working of metal plates commercially produced and having different thicknesses with using the same dies. The adjustor has a pair of semicircular engaging portions 30b and a coupling portion 30a perpendicular to and coupling the engaging portions (30b).

摘要翻译： 在利用电子照相技术的图像形成设备（1）中，相对于框架（13），激光扫描单元（5）的位置和姿势被容易地调节，而不会增加设备的大小。 在三个固定部分（52a，52b和52c）中的每个固定部分（52a，52b和52c）的侧面（51b）附近形成有半圆形凹部（53）和细长孔 激光扫描单元（5）的壳体（51）和用作间隔件的调节器30附接到每个固定部分（52a，52b和52c）。 每个调节器（30）在具有不同厚度的多种调节器中选出，所述多个调节器通过使用相同的模具商业生产和具有不同厚度的金属板的冲压加工制造。 调节器具有一对半圆形接合部分30b和与接合部分（30b）垂直并联接的联接部分30a。

公开(公告)号：US5506659A

公开(公告)日：1996-04-09

申请号：US262660

申请日：1994-06-20

申请人： Kazuto Hori

发明人： Kazuto Hori

IPC分类号： G01N21/47 ,  G03G15/00 ,  G03G21/00

CPC分类号： G03G15/605 ,  G03G15/5041 ,  G03G2215/00042

摘要： The present invention is directed to an image density control device in an image formation apparatus where a pattern of reference density on a sample original is exposed to light from an exposing light source to image the pattern on photoconductor, density of the resultant toner image is detected by a reflection-type photosensor, and parameters on image density are adjusted based upon results of detection by the reflection-type photosensor. In the image density control device in the image formation apparatus, the sample original is mounted on a cabinet of the image formation apparatus so that a distance from the exposing light source in illuminating the pattern of the reference density to the pattern of the reference density can be adjusted.

摘要翻译： 本发明涉及图像形成装置中的图像浓度控制装置，其中样本原稿上的参考浓度图案暴露于来自曝光光源的光以对感光体上的图案成像，以检测所得到的调色剂图像的浓度 通过反射式光电传感器，根据反射式光电传感器的检测结果，调整图像浓度参数。 在图像形成装置中的图像浓度控制装置中，将样本原稿安装在图像形成装置的机壳上，使得在照射参考密度的图案到参考密度的图案时从曝光光源的距离可以 调整。