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    • 7. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US08610982B2
    • 2013-12-17
    • US13117637
    • 2011-05-27
    • Shinichi TsunodaNaoya YamasakiShunichiro Shishikura
    • Shinichi TsunodaNaoya YamasakiShunichiro Shishikura
    • G03F3/08H04N1/40
    • H04N1/407H04N1/00013H04N1/00037H04N1/6033H04N2201/0081
    • An image forming apparatus includes an image reader that covers an image recorded material placed on a reading surface with an openable cover plate so as to press thereof and optically reads an image of the image recorded material, an image output unit that forms an image on a recording sheet and outputs the image, a detecting unit that detects an opened/closed state of the cover plate when the image output unit forms a gradation test image on the recording sheet, the recording sheet having the gradation test image formed thereon is placed on the reading surface of the image reader, and an operation of reading the gradation test image is performed, and a gradation correction unit that conducts a gradation correction of the image forming apparatus based on an image read by the image reader when the detecting unit detects the closed state of the cover plate.
    • 图像形成装置包括:图像读取器,其利用可打开的盖板覆盖放置在读取表面上的图像记录材料,以便按压它并光学地读取图像记录材料的图像;图像输出单元, 记录纸并输出图像;检测单元,其在图像输出单元在记录纸上形成灰度测试图像时检测盖板的打开/关闭状态,其上形成有灰度测试图像的记录纸放置在 执行图像读取器的读取表面和读取灰度测试图像的操作;以及灰度校正单元,当检测单元检测到关闭时,基于由图像读取器读取的图像进行图像形成装置的灰度校正 盖板的状态。
    • 9. 发明授权
    • Image forming apparatus having a toner concentration sensor
    • 具有调色剂浓度传感器的图像形成装置
    • US07751731B2
    • 2010-07-06
    • US12423741
    • 2009-04-14
    • Shigeru TsukadaShunichiro ShishikuraNaoya YamasakiMasayuki Aratake
    • Shigeru TsukadaShunichiro ShishikuraNaoya YamasakiMasayuki Aratake
    • G03G15/01G03G15/08
    • G03G15/0163G03G15/0121G03G2215/00063G03G2215/0177
    • An image forming apparatus includes an image carrier on which an electrostatic latent image is formed, a rotary developing device having N developer carriers, where N defines a total number of developer carriers, the N developer carriers carrying developers to develop the electrostatic latent image, and the rotary developing device moves the N developer carriers to a development position opposite to the image carrier, and a toner concentration sensor that measures toner concentrations of the developers carried in the developer carriers. A measurement position of the toner concentration sensor is set on a second virtual straight line with the second virtual straight line having a first angle or an angle that is double the first angle toward a first virtual straight line on a rotation orbit of the rotary device, and the first virtual straight line connects a rotation center of the rotary developing device and the development position. The N developer carriers are placed in turn in an order starting from a first developer carrier to an N-th developer carrier at the same angular interval as the first angle on the rotation orbit of the rotary developing device, and an angular interval between the N-th developer carrier and the first developer carrier is set to a second angle greater than the first angle.
    • 图像形成装置包括其上形成有静电潜像的图像载体,具有N个显影剂载体的旋转显影装置,其中N限定显影剂载体的总数,携带显影剂的N显影剂载体显影静电潜像,以及 旋转显影装置将N个显影剂载体移动到与图像载体相对的显影位置,以及调色剂浓度传感器,其测量在显影剂载体中承载的显影剂的调色剂浓度。 调色剂浓度传感器的测量位置被设置在第二虚拟直线上,其中第二虚拟直线具有与旋转装置的旋转轨道上的第一假想直线相对应的第一角度或第一角度的两倍的角度, 并且第一虚拟直线连接旋转显影装置的旋转中心和显影位置。 N个显影剂载体依次以与旋转显影装置的旋转轨道上的第一角度相同的角度间隔从第一显影剂载体开始到第N显影剂载体的顺序放置,并且N 第一显影剂载体和第一显影剂载体被设定为大于第一角度的第二角度。
    • 10. 发明申请
    • Image Forming Apparatus Having A Toner Concentration Sensor
    • 具有调色剂浓度传感器的成像装置
    • US20090202261A1
    • 2009-08-13
    • US12423741
    • 2009-04-14
    • Shigeru TSUKADAShunichiro ShishikuraNaoya YamasakiMasayuki Aratake
    • Shigeru TSUKADAShunichiro ShishikuraNaoya YamasakiMasayuki Aratake
    • G03G15/08
    • G03G15/0163G03G15/0121G03G2215/00063G03G2215/0177
    • An image forming apparatus includes an image carrier on which an electrostatic latent image is formed, a rotary developing device having N developer carriers, where N defines a total number of developer carriers, the N developer carriers carrying developers to develop the electrostatic latent image, and the rotary developing device moves the N developer carriers to a development position opposite to the image carrier, and a toner concentration sensor that measures toner concentrations of the developers carried in the developer carriers. A measurement position of the toner concentration sensor is set on a second virtual straight line with the second virtual straight line having a first angle or an angle that is double the first angle toward a first virtual straight line on a rotation orbit of the rotary device, and the first virtual straight line connects a rotation center of the rotary developing device and the development position. The N developer carriers are placed in turn in an order starting from a first developer carrier to an N-th developer carrier at the same angular interval as the first angle on the rotation orbit of the rotary developing device, and an angular interval between the N-th developer carrier and the first developer carrier is set to a second angle greater than the first angle.
    • 图像形成装置包括其上形成有静电潜像的图像载体,具有N个显影剂载体的旋转显影装置,其中N限定显影剂载体的总数,携带显影剂的N显影剂载体显影静电潜像,以及 旋转显影装置将N个显影剂载体移动到与图像载体相对的显影位置,以及调色剂浓度传感器,其测量在显影剂载体中承载的显影剂的调色剂浓度。 调色剂浓度传感器的测量位置被设置在第二虚拟直线上,其中第二虚拟直线具有与旋转装置的旋转轨道上的第一假想直线相对应的第一角度或第一角度的两倍的角度, 并且第一虚拟直线连接旋转显影装置的旋转中心和显影位置。 N个显影剂载体依次以与旋转显影装置的旋转轨道上的第一角度相同的角度间隔从第一显影剂载体开始到第N显影剂载体的顺序放置,并且N 第一显影剂载体和第一显影剂载体被设定为大于第一角度的第二角度。