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 and process cartridge
    4.
    发明授权
    Image forming apparatus and process cartridge 有权
    成像设备和处理盒

    公开(公告)号:US06169869A

    公开(公告)日:2001-01-02

    申请号:US09492335

    申请日:2000-01-27

    IPC分类号: G03G1522

    摘要: An image forming apparatus includes an image bearing member, a developer carrying member for carrying thereon a developer to transport the developer to a developing zone, and a regulation member provided in touch with the surface of the developer carrying member to regulate coat weight of the developer carried thereon. The image bearing member includes a conductive substrate and a photosensitive layer formed thereon, and the photosensitive layer contains at least one polycarbonate resin (I) having a viscosity-average molecular weight not more than 1.5×104 and at least one polycarbonate resin (II) having a viscosity-average molecular weight more than 1.5×104, the polycarbonate resin (I) being contained in a proportion of from 30% by weight to 95% by weight based on the total weight of the polycarbonate resins (I) and (II). On the developer carrying member, the developer is in a coat weight not more than 1.5 mg/cm2 at the developing zone after its regulation by the regulation member. This apparatus can prevent smeared images and enables stable and high-grade image formation.

    摘要翻译: 图像形成装置包括图像承载部件,用于承载显影剂以将显影剂输送到显影区域的显影剂承载部件和与显影剂承载部件的表面接触地设置的调节部件,以调节显影剂的涂层重量 在其上承载。 图像承载部件包括导电基材和形成在其上的感光层,感光层含有至少一种粘均分子量不大于1.5×10 4的聚碳酸酯树脂(I)和至少一种聚碳酸酯树脂(II),其具有 基于聚碳酸酯树脂(I)和(II)的总重量,粘均分子量大于1.5×10 4,聚碳酸酯树脂(I)的含量为30重量%至95重量%。 在显影剂承载构件上,显影剂在调节构件调节之后的显影区中的涂层重量不超过1.5mg / cm 2。 该装置可以防止模糊图像,并且能够进行稳定和高档次的图像形成。

    Image forming apparatus
    7.
    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。

    Charging member, process cartridge, and image forming apparatus
    8.
    发明授权
    Charging member, process cartridge, and image forming apparatus 失效
    充电部件,处理盒和成像设备

    公开(公告)号:US06317574B1

    公开(公告)日:2001-11-13

    申请号:US09510341

    申请日:2000-02-22

    IPC分类号: G03G1502

    CPC分类号: G03G15/0233

    摘要: A charging member is disposed in contact with an electrophotographic photosensitive member and charges the surface of the electrophotographic photosensitive member electrostatically upon application of a voltage. The charging member has a conductive support, a base layer and a surface layer which are formed on the conductive support. The surface layer contains fluorine resin particles as a filler and a fluorine resin as a binder resin.

    摘要翻译: 充电构件设置成与电子照相感光构件接触,并且在施加电压时静电地对静电感光构件的表面充电。 充电构件具有形成在导电支撑件上的导电支撑件,基底层和表面层。 表面层含有作为填料的氟树脂颗粒和作为粘合剂树脂的氟树脂。

    IMAGE FORMING APPARATUS
    9.
    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 using a developer of a given polarity and an
externally added additive of an opposite polarity
    10.
    发明授权
    Image forming apparatus using a developer of a given polarity and an externally added additive of an opposite polarity 有权
    使用给定极性的显影剂和相反极性的外部附加添加剂的成像装置

    公开(公告)号:US6163663A

    公开(公告)日:2000-12-19

    申请号:US167735

    申请日:1998-10-07

    IPC分类号: G03G15/06 G03G15/09

    摘要: An image forming apparatus includes an image bearing member for bearing an electrostatic image; a developer carrying member for carrying a developer and for forming a developing zone with the image bearing member, wherein the developer is externally added with additive having a charging polarity opposite from that of the developer; a voltage applying device for applying a developing voltage to the developer carrying member; voltage a control device for controlling the developing voltage so as to change force for directing the additive toward a non-image portion of the image bearing member in accordance with a number of image forming operations.

    摘要翻译: 图像形成装置包括用于承载静电图像的图像承载部件; 用于承载显影剂并与图像承载部件形成显影区的显影剂承载构件,其中显影剂外部添加具有与显影剂相反的充电极性的添加剂; 用于向显影剂承载构件施加显影电压的电压施加装置; 电压控制显影电压的控制装置,以便根据成像操作的数量改变用于将添加剂引导到图像承载部件的非图像部分的力。