Image forming apparatus and image forming method
    2.
    发明授权
    Image forming apparatus and image forming method 失效
    图像形成装置及图像形成方法

    公开(公告)号:US06873350B2

    公开(公告)日:2005-03-29

    申请号:US09887119

    申请日:2001-06-25

    CPC分类号: G06K15/1219

    摘要: There is provided an image forming apparatus such as a latent image forming apparatus, in which the density of a half tone is stable independent on a write position of a main scanning line, even if a plurality of semiconductor lasers are used. The image forming apparatus has a latent image forming unit for pulse-width-modulating a drive signal of the semiconductor laser in response to the write position of image data. The latent image forming unit has an image sorting circuit for sorting the image data into an odd line and an even line, a memory for storing a turning on position, a pulse generating position control circuit for generating a pulse generating position signal, a PWM circuit for generating a triangular wave in accordance with the pulse generating position signal, and a beam-A-circuit and a beam-B-circuit, which control beams from the semiconductor laser.

    摘要翻译: 提供了一种诸如潜像形成装置的图像形成装置,其中半色调的浓度独立于主扫描线的写入位置是稳定的,即使使用多个半导体激光器。 图像形成装置具有潜像形成单元,用于响应于图像数据的写入位置对半导体激光器的驱动信号进行脉宽调制。 潜像形成单元具有用于将图像数据分类为奇数行和偶数行的图像分类电路,用于存储接通位置的存储器,用于产生脉冲产生位置信号的脉冲产生位置控制电路,PWM电路 用于根据脉冲产生位置信号产生三角波,以及控制来自半导体激光器的光束的光束A电路和光束B电路。

    Image forming apparatus and method
    3.
    发明授权
    Image forming apparatus and method 有权
    图像形成装置及方法

    公开(公告)号:US06636251B2

    公开(公告)日:2003-10-21

    申请号:US10157976

    申请日:2002-05-31

    IPC分类号: G03G1504

    CPC分类号: G06K15/1223 H04N1/40031

    摘要: An image forming and apparatus is provided in which a halftone density of an image is stabilized irrespective of a timing at which writing on scanning lines is started, even when using multiple laser beams. First, it is determined whether or not a portion exposed by adjacent laser beams (i.e., exposed by both of two beams simultaneously) is present. If the result of the determination is affirmative, it is then determined whether or not a portion adjacent to the exposed portion and not exposed by a laser beam is present. If the result of this determination is affirmative, exposure by fine dots is added to the portion not exposed by a laser beam.

    摘要翻译: 即使使用多个激光束,也设置图像形成和装置,其中图像的半色调浓度稳定,而与扫描线上写入的时间无关。 首先,确定是否存在由相邻激光束曝光的部分(即,由两个光束同时曝光)。 如果确定的结果是肯定的,则确定是否存在与暴露部分相邻并且不被激光束曝光的部分。 如果该确定的结果是肯定的,则通过细小点的曝光被添加到未被激光束曝光的部分。

    Image forming apparatus
    4.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号:US07444092B2

    公开(公告)日:2008-10-28

    申请号:US11553730

    申请日:2006-10-27

    IPC分类号: G03G15/02

    摘要: An image forming apparatus forming a preferable image without white dots caused by excessive charging when a halftone image is formed by providing a potential difference between a surface potential of a photosensitive drum immediately before charging by a charging device, and that of the drum after the charging in an image forming area of the drum. At least one of a charging bias and a transfer bias is changed between a first area and a second area. The first area is an area on the drum that passes a transfer portion when a recording medium is not present between the roller and the drum, and on that a latent image is to be formed. The second area is an area on the drum that passes the transfer portion when the medium is present between the roller and the drum, and on that a latent image is to be formed.

    摘要翻译: 一种图像形成装置,当通过在充电装置充电之前提供感光鼓的表面电位和充电装置之后的感光鼓的表面电位之间的电位差来形成通过在形成半色调图像时由过度充电引起的白点的优选图像 在滚筒的图像形成区域中。 在第一区域和第二区域之间改变充电偏压和转印偏压中的至少一个。 第一区域是当滚筒和滚筒之间不存在记录介质时通过传送部分的滚筒上的区域,并且将形成潜像。 第二区域是当介质存在于辊和滚筒之间时通过转印部分的滚筒上的区域,并且将形成潜像。

    IMAGE FORMING APPARATUS
    5.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号:US20080095550A1

    公开(公告)日:2008-04-24

    申请号:US11553730

    申请日:2006-10-27

    IPC分类号: G03G15/02 G03G15/16

    摘要: An image forming apparatus forming a preferable image without white dots caused by excessive charging when a halftone image is formed by providing a potential difference between a surface potential of a photosensitive drum immediately before charging by a charging device, and that of the drum after the charging in an image forming area of the drum. At least one of a charging bias and a transfer bias is changed between a first area and a second area. The first area is an area on the drum that passes a transfer portion when a recording medium is not present between the roller and the drum, and on that a latent image is to be formed. The second area is an area on the drum that passes the transfer portion when the medium is present between the roller and the drum, and on that a latent image is to be formed.

    摘要翻译: 一种图像形成装置,当通过在充电装置充电之前提供感光鼓的表面电位和充电装置之后的感光鼓的表面电位之间的电位差来形成通过在形成半色调图像时由过度充电引起的白点的优选图像 在滚筒的图像形成区域中。 在第一区域和第二区域之间改变充电偏压和转印偏压中的至少一个。 第一区域是当滚筒和滚筒之间不存在记录介质时通过传送部分的滚筒上的区域,并且将形成潜像。 第二区域是当介质存在于辊和滚筒之间时通过转印部分的滚筒上的区域,并且将形成潜像。

    Image forming apparatus and developer remaining amount detecting method
    7.
    发明授权
    Image forming apparatus and developer remaining amount detecting method 有权
    图像形成装置和显影剂剩余量检测方法

    公开(公告)号:US07532828B2

    公开(公告)日:2009-05-12

    申请号:US11680060

    申请日:2007-02-28

    IPC分类号: G03G15/08

    摘要: An image forming apparatus, which uses a developing device including: a developer carrying member; a developer containing portion; an agitating member agitating a developer; a developer amount detecting member outputting a signal for detecting the remaining amount of the developer contained in the developer containing portion, the image forming apparatus including a main body controller detecting the remaining amount using a first detecting unit that sets a reference value as a reference for detecting the remaining amount by the signal, and thereafter calculates the remaining amount based on an amount of change in the signal from the reference value, and a second detecting unit that detects the remaining amount based on a band of fluctuation in the signal corresponding to a rotational period of the agitating member.

    摘要翻译: 一种图像形成装置,其使用显影装置,包括:显影剂承载构件; 显影剂容纳部分; 搅拌构件搅拌显影剂; 显影剂量检测构件,输出用于检测包含在显影剂容纳部分中的显影剂的剩余量的信号,所述图像形成装置包括主体控制器,其使用将参考值设置为基准的第一检测单元作为基准来检测剩余量 通过信号检测剩余量,然后基于来自基准值的信号的变化量来计算剩余量;以及第二检测单元,其基于对应于信号的信号的波动的波段来检测剩余量 搅拌构件的旋转周期。

    IMAGE FORMING APPARATUS AND DEVELOPER REMAINING AMOUNT DETECTING METHOD
    8.
    发明申请
    IMAGE FORMING APPARATUS AND DEVELOPER REMAINING AMOUNT DETECTING METHOD 有权
    图像形成装置和开发者剩余量检测方法

    公开(公告)号:US20070206966A1

    公开(公告)日:2007-09-06

    申请号:US11680060

    申请日:2007-02-28

    IPC分类号: G03G15/08

    摘要: An image forming apparatus, which uses a developing device including: a developer carrying member; a developer containing portion; an agitating member agitating a developer; a developer amount detecting member outputting a signal for detecting the remaining amount of the developer contained in the developer containing portion, the image forming apparatus comprising a main body controller detecting the remaining amount using a first detecting unit that sets a reference value as a reference for detecting the remaining amount by the signal, and thereafter calculates the remaining amount based on an amount of change in the signal from the reference value, and a second detecting unit that detects the remaining amount based on a band of fluctuation in the signal corresponding to a rotational period of the agitating member.

    摘要翻译: 一种图像形成装置,其使用显影装置,包括:显影剂承载构件; 显影剂容纳部分; 搅拌构件搅拌显影剂; 显影剂量检测构件输出用于检测包含在显影剂容纳部分中的显影剂的剩余量的信号,所述图像形成装置包括:主体控制器,使用设置参考值作为参考的第一检测单元检测剩余量; 通过信号检测剩余量,然后基于来自基准值的信号的变化量来计算剩余量;以及第二检测单元,其基于对应于信号的信号的波动的波段来检测剩余量 搅拌构件的旋转周期。