Image forming apparatus and control method therefor
    1.
    发明授权
    Image forming apparatus and control method therefor 失效
    图像形成装置及其控制方法

    公开(公告)号:US06236415B1

    公开(公告)日:2001-05-22

    申请号:US09216714

    申请日:1998-12-21

    IPC分类号: B41J2385

    CPC分类号: H04N1/506 B41J2/473

    摘要: In forming a multi-colored image by superimposing a plurality of plane images, positional offsets of the plane images are prevented, thereby obtaining high quality color images. The timing at which image data corresponding to each plane image is generated is controlled in accordance with the phase difference between the sub-scanning start signal indicating the rotational timing of an image carrier and the main-scanning start signal representing the rotational timing of a rotating polygonal mirror. Various controls are further performed.

    摘要翻译: 在通过叠加多个平面图像来形成多色图像时,防止平面图像的位置偏移,从而获得高质量的彩色图像。 根据表示图像载体的旋转定时的副扫描开始信号和表示旋转的旋转定时的主扫描开始信号之间的相位差来控制与每个平面图像相对应的图像数据的定时 多面镜。 进一步进行各种控制。

    Image processing apparatus including means for judging a chromatic portion of an image
    3.
    发明授权
    Image processing apparatus including means for judging a chromatic portion of an image 失效
    图像处理装置包括用于判断图像的彩色部分的装置

    公开(公告)号:US06181819B2

    公开(公告)日:2001-01-30

    申请号:US08426628

    申请日:1995-04-21

    IPC分类号: H04N140

    CPC分类号: H04N1/46

    摘要: An image processing apparatus and method includes a device for judging the degree of color or lack of color of an input color image signal, judging dot areas in input color image signal and controlling a spacial filter or a density conversion device for processing the input image signal according to a judgment by the first and second judging results, the spacial filter or the density conversion device being controlled according to the judgment by the first and second judging results, wherein the image processing also includes the ability to independently set sharpness of each of a plurality of color component signals.

    摘要翻译: 一种图像处理装置和方法包括:用于判断输入彩色图像信号的颜色程度或颜色不足的装置,判断输入彩色图像信号中的点区域,并控制空间滤波器或密度转换装置,以处理输入图像信号 根据第一和第二判断结果的判断,空间滤波器或密度转换装置根据第一和第二判断结果的判断进行控制,其中,图像处理还包括独立地设置每个的清晰度的能力 多个颜色分量信号。

    Image processing apparatus and method for performing image inclination
    4.
    发明授权
    Image processing apparatus and method for performing image inclination 失效
    用于执行图像倾斜的图像处理装置和方法

    公开(公告)号:US6137921A

    公开(公告)日:2000-10-24

    申请号:US777091

    申请日:1996-12-30

    IPC分类号: G06T3/60 G06K9/32

    CPC分类号: G06T3/606

    摘要: An image signal that enters line by line is subjected to italicization processing in a zoom unit. When an input image signal is stored in memory, a controller performs control in such a manner that the write starting address is changed, line by line, in dependence upon angle of italicization (amount of image inclination) and zoom rate.

    摘要翻译: 逐行进行的图像信号在变焦单元中进行斜体处理。 当输入图像信号被存储在存储器中时,控制器以这样的方式执行控制,使得写起始地址根据斜体角度(图像倾斜度)和缩放比例逐行地改变。

    Image processing apparatus
    8.
    发明授权
    Image processing apparatus 失效
    图像处理装置

    公开(公告)号:US5420938A

    公开(公告)日:1995-05-30

    申请号:US301029

    申请日:1994-09-06

    CPC分类号: G06T5/20 H04N1/56 H04N1/58

    摘要: An image processing apparatus includes a first judgment circuit for judging whether an input image is a monochrome image or a color image on the basis of an input image signal, and a second judgment circuit for judging whether a pixel represented by the input image signal is part of a character which is black. In an image processing method, a judgment is made as to whether an input image is a monochrome image or a color image on the basis of an input image signal, and a judgment is made as to whether a pixel represented by the input image signal is part of a character which is black.

    摘要翻译: 图像处理装置包括:第一判断电路,用于基于输入图像信号判断输入图像是单色图像还是彩色图像;第二判断电路,用于判断由输入图像信号表示的像素是否为部分 一个黑色的角色。 在图像处理方法中,基于输入图像信号判断输入图像是单色图像还是彩色图像,并且判断由输入图像信号表示的像素是否为 黑色的角色的一部分。

    Image reading apparatus
    9.
    发明授权
    Image reading apparatus 失效
    图像读取装置

    公开(公告)号:US5371613A

    公开(公告)日:1994-12-06

    申请号:US838968

    申请日:1992-02-21

    IPC分类号: H04N1/401 G06K9/00 H04N1/40

    CPC分类号: H04N1/401

    摘要: An image reader comprises a platen on which an original is to be placed, a read unit for reading an image of the original placed on the platen, a first standard member having even density, a second standard member having even density and provided at a position different from the first standard member, a correction unit for correcting unevenness of a video signal resulted from reading the image of the original by the read unit on the basis of a first standard signal resulted from reading the first standard member by the read unit, and a compensation unit for compensating correction operation made by the correction unit on the basis of a second standard signal resulted from reading the second standard member by the read unit. The reader may also comprise an authorization unit for authorizing the compensation operation by the compensation unit. With the reader, unevenness of the video signal is always automatically corrected with satisfactory results.

    摘要翻译: 图像读取器包括其上要放置原件的压板,用于读取放置在压板上的原稿的图像的读取单元,具有均匀密度的第一标准构件,具有均匀密度的第二标准构件,并且设置在位置 基于由读取单元读取第一标准构件而得到的第一标准信号,由读取单元读取原稿的图像而产生的视频信号的不均匀性的校正单元,以及 补偿单元,用于基于由读取单元读取第二标准构件而产生的第二标准信号来补偿由校正单元进行的校正操作。 读取器还可以包括授权单元,用于由补偿单元授权补偿操作。 对于读写器,视频信号的不均匀性总是自动校正,结果令人满意。

    Processing apparatus using selectable period triangular or sawtooth waves
    10.
    发明授权
    Processing apparatus using selectable period triangular or sawtooth waves 失效
    使用可选择的周期三角形或锯齿波的处理装置

    公开(公告)号:US4989098A

    公开(公告)日:1991-01-29

    申请号:US276935

    申请日:1988-11-28

    申请人: Shinobu Arimoto

    发明人: Shinobu Arimoto

    IPC分类号: G03G15/04 H03K7/08 H04N1/405

    CPC分类号: H04N1/4056

    摘要: An image processing apparatus includes an input unit for inputting an image signal, a conversion unit for converting the image signal input from the input unit and outputting the converted image signal, and an output unit for outputting a pulse-width modulation signal based on the converted image signal output from the conversion unit. The output unit is operated in a fixed period processing mode regardless of an output characteristic of the pulse-width modulation signal, and outputs the pulse-width modulation signal. The conversion unit switches a conversion mode of the input image signal in association with the output characteristic of the pulse-width modulation signal.

    摘要翻译: 一种图像处理装置,包括用于输入图像信号的输入单元,转换单元,用于转换从输入单元输入的图像信号并输出​​转换的图像信号;以及输出单元,用于输出基于转换的图像信号的脉冲宽度调制信号 从转换单元输出的图像信号。 输出单元在固定周期处理模式下操作,而不管脉冲宽度调制信号的输出特性如何,并输出脉宽调制信号。 转换单元与脉冲宽度调制信号的输出特性相关联地切换输入图像信号的转换模式。