公开(公告)号：US08189026B2

公开(公告)日：2012-05-29

申请号：US13023045

申请日：2011-02-08

申请人： Hideo Izawa ,  Yasushi Katagiri ,  Osamu Ebuchi

发明人： Hideo Izawa ,  Yasushi Katagiri ,  Osamu Ebuchi

IPC分类号： G03G15/00

CPC分类号： G03G15/5062 ,  G03G15/5008

摘要： A method of correcting print images in an electrophotographic printer wherein an image formed by a print head (3) on a peripheral surface of a photoconductor drum (1) is transferred and printed on a sheet of paper. The method comprises: furnishing the print head with a standard tacho signal in the form of pulses and thereby printing on a sheet of paper a check mark (9) for each given number of pulses of the standard tacho signal while the photoconductor drum makes one rotation; by means of a camera (10), detecting a periodic deviation in each spacing between successive such check marks; in response to the deviation in each spacing between the successive check marks, varying the pulse width of pulses of the standard tacho signal for each spacing between the successive check marks, thereby to provide a modified tacho signal; and effecting printing thereafter based on the modified tacho signal.

摘要翻译： 一种在电子照相打印机中校正打印图像的方法，其中由感光鼓（1）的外周表面上的打印头（3）形成的图像被转印并印刷在一张纸上。 该方法包括：以脉冲形式向打印头提供标准的转速信号，从而在感光鼓转动一圈时，在标准转速信号的每个给定数量的脉冲上在一张纸上打印一个复选标记（9） ; 通过相机（10），检测连续的这种检验标记之间的每个间隔的周期性偏差; 响应于连续检查标记之间的每个间隔的偏差，改变连续检验标记之间的每个间隔的标准转速信号的脉冲的脉冲宽度，由此提供修正的转速信号; 然后根据修正后的转速信号进行打印。

公开(公告)号：US20110199452A1

公开(公告)日：2011-08-18

申请号：US13023045

申请日：2011-02-08

申请人： Hideo Izawa ,  Yasushi Katagiri ,  Osamu Ebuchi

发明人： Hideo Izawa ,  Yasushi Katagiri ,  Osamu Ebuchi

IPC分类号： B41J2/385

CPC分类号： G03G15/5062 ,  G03G15/5008

摘要： A method of correcting print images in an electrophotographic printer wherein an image formed by a print head (3) on a peripheral surface of a photoconductor drum (1) is transferred and printed on a sheet of paper. The method comprises: furnishing the print head with a standard tacho signal in the form of pulses and thereby printing on a sheet of paper a check mark (9) for each given number of pulses of the standard tacho signal while the photoconductor drum makes one rotation; by means of a camera (10), detecting a periodic deviation in each spacing between successive such check marks; in response to the deviation in each spacing between the successive check marks, varying the pulse width of pulses of the standard tacho signal for each spacing between the successive check marks, thereby to provide a modified tacho signal; and effecting printing thereafter based on the modified tacho signal.

摘要翻译： 一种在电子照相打印机中校正打印图像的方法，其中由感光鼓（1）的外周表面上的打印头（3）形成的图像被转印并印刷在一张纸上。 该方法包括：以脉冲形式向打印头提供标准的转速信号，从而在感光鼓转动一圈时，在标准转速信号的每个给定数量的脉冲上在一张纸上打印一个复选标记（9） ; 通过相机（10），检测连续的这种检验标记之间的每个间隔的周期性偏差; 响应于连续检查标记之间的每个间隔的偏差，改变连续检验标记之间的每个间隔的标准转速信号的脉冲的脉冲宽度，由此提供修正的转速信号; 然后根据修正后的转速信号进行打印。

公开(公告)号：US07792442B2

公开(公告)日：2010-09-07

申请号：US12369481

申请日：2009-02-11

申请人： Hideo Izawa ,  Yasushi Katagiri ,  Osamu Ebuchi

发明人： Hideo Izawa ,  Yasushi Katagiri ,  Osamu Ebuchi

IPC分类号： G03G15/00

CPC分类号： G03G15/105 ,  G03G15/5062 ,  G03G2215/00042 ,  G03G2215/00067 ,  G03G2215/0629

摘要： A electronic photograph printer includes a density-measurement section and a density controller section. The density-measurement section includes a density sensor 31 for measuring densities of images printed on a web by electronic-photograph-printing units. The density controller section adjusts densities of images which are about to be printed on the web by the electronic-photograph-printing units based on measurement data obtained by using the density sensor 31 associated with the densities of the image on the web. This configuration enables accurate and stable print-density control at a low cost.

摘要翻译： 电子照片打印机包括密度测量部分和浓度控制器部分。 密度测量部分包括一个密度传感器31，用于通过电子照相印刷单元测量印刷在卷筒纸上的图像的密度。 密度控制器部分基于通过使用与网络上的图像的密度相关联的密度传感器31获得的测量数据来调整即将被电子照片打印单元打印在卷筒纸上的图像的浓度。 该配置可以以低成本实现精确和稳定的打印浓度控制。