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1. 发明公开

EP1967371A1 Light amount control, optical writing, and image forming apparatuses 有权
标题翻译： Lichtstärkenkontrolle，optische Schreib- undBilderzeugungsgeräte
公开(公告)号：EP1967371A1
公开(公告)日：2008-09-10
申请号：EP08152256.7
申请日：2008-03-04
申请人： Ricoh Company, Ltd.
发明人： Ohide, Toshio , Ono, Kenichi
IPC分类号： B41J2/45
CPC分类号： B41J2/45
摘要： A light-amount control apparatus for controlling an output light amount of light sources used for optical writing is disclosed. The apparatus includes one or more drive units for supplying a drive current to the light source; one or more drive-current setting units for determining an amount of the drive current provided to the light source from the drive unit; a light-amount detecting unit for detecting an output light from the light source; and outputting a voltage according to the detected light amount; and a processing unit for setting the drive current amount based on the detected value detected with the light-amount detecting unit.
摘要翻译：公开了一种用于控制用于光学写入的光源的输出光量的光量控制装置。该装置包括用于向光源提供驱动电流的一个或多个驱动单元; 一个或多个驱动电流设置单元，用于确定从驱动单元提供给光源的驱动电流的量; 光量检测单元，用于检测来自光源的输出光; 并根据检测到的光量输出电压; 以及处理单元，用于基于由光量检测单元检测到的检测值来设定驱动电流量。

2. 发明公开

EP2299390A3 Optical writing device, image forming apparatus, and optical writing method 有权
标题翻译：光学写入装置，图像形成装置和光学写入方法
公开(公告)号：EP2299390A3
公开(公告)日：2013-08-28
申请号：EP10176398.5
申请日：2010-09-13
申请人： Ricoh Company Ltd.
发明人： Ohide, Toshio
IPC分类号： G06K15/12 , H04N1/047
CPC分类号： G06K15/1257 , H04N1/053 , H04N1/06 , H04N2201/04781 , H04N2201/04786 , H04N2201/04789
摘要： An optical writing device (10) includes two or more light sources. The two or more light sources can be driven independently, are placed away from each other in a subscanning direction of a photoreceptor (30), and each distance of beams emitted from the light sources to the photoreceptor (30) is different. A phase control unit (214, 218, 224, 228) causes a difference in phase among timing control data of two or more beams emitted from the two or more light sources by a phase change amount, which is determined on the basis of beam position of the each beam on the photoreceptor (30) in a main scanning direction and varies depending on the beam position. The modulating unit (215, 225) modulates the timing control data of the respective phase-controlled beams by a same clock.

3. 发明授权

EP2299390B1 Optical writing device, image forming apparatus, and optical writing method 有权
标题翻译：光学写入装置，图像形成装置和光学写入方法
公开(公告)号：EP2299390B1
公开(公告)日：2016-11-02
申请号：EP10176398.5
申请日：2010-09-13
申请人： Ricoh Company Ltd.
发明人： Ohide, Toshio
IPC分类号： G06K15/12 , H04N1/047
CPC分类号： G06K15/1257 , H04N1/053 , H04N1/06 , H04N2201/04781 , H04N2201/04786 , H04N2201/04789

4. 发明公开

EP2299390A2 Optical writing device, image forming apparatus, and optical writing method 有权
标题翻译： Optische Schreibvorrichtung，Bilderzeugungsvorrichtung und optisches Schreibverfahren
公开(公告)号：EP2299390A2
公开(公告)日：2011-03-23
申请号：EP10176398.5
申请日：2010-09-13
申请人： Ricoh Company Ltd.
发明人： Ohide, Toshio
IPC分类号： G06K15/12
CPC分类号： G06K15/1257 , H04N1/053 , H04N1/06 , H04N2201/04781 , H04N2201/04786 , H04N2201/04789
摘要： An optical writing device (10) includes two or more light sources. The two or more light sources can be driven independently, are placed away from each other in a subscanning direction of a photoreceptor (30), and each distance of beams emitted from the light sources to the photoreceptor (30) is different. A phase control unit (214, 218, 224, 228) causes a difference in phase among timing control data of two or more beams emitted from the two or more light sources by a phase change amount, which is determined on the basis of beam position of the each beam on the photoreceptor (30) in a main scanning direction and varies depending on the beam position. The modulating unit (215, 225) modulates the timing control data of the respective phase-controlled beams by a same clock.
摘要翻译：光学写入装置（10）包括两个或更多个光源。两个或更多个光源可以独立地驱动，在感光体（30）的副扫描方向上彼此远离放置，并且从光源发射到感光体（30）的光束的每个距离是不同的。相位控制单元（214,218,224,228）在由两个或多个光源发射的两个或更多个光束的定时控制数据之间产生相位差，相位变化量是根据光束位置确定的的每个光束在主扫描方向上的感光体（30）上，并且根据光束位置而变化。调制单元（215,225）以相同的时钟调制各个相控束的定时控制数据。

5. 发明授权

EP1967371B1 Light amount control, optical writing, and image forming apparatuses 有权
标题翻译：光强度控制，光学写入和成像装置
公开(公告)号：EP1967371B1
公开(公告)日：2010-05-12
申请号：EP08152256.7
申请日：2008-03-04
申请人： Ricoh Company, Ltd.
发明人： Ohide, Toshio , Ono, Kenichi
IPC分类号： B41J2/45
CPC分类号： B41J2/45

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