Semiconductor laser drive
    1.
    发明授权
    Semiconductor laser drive 失效
    半导体激光驱动

    公开(公告)号:US4771431A

    公开(公告)日:1988-09-13

    申请号:US901185

    申请日:1986-08-27

    CPC分类号: H01S5/06825 H01S5/0683

    摘要: A semiconductor laser driver is designed to detect a semiconductor laser output and control a drive voltage or current of a semiconductor laser so as to set a detected laser output to be a predetermined constant laser output. The laser driver includes an integrator for integrating the detected laser output, thereby utilizing an integrated signal as a semiconductor laser drive signal. The integrator integrates the difference between a voltage corresponding to the detected laser output and a reference voltage corresponding to the predetermined constant laser output.

    摘要翻译: 半导体激光驱动器被设计为检测半导体激光器输出并控制半导体激光器的驱动电压或电流,以便将检测到的激光输出设置为预定的恒定激光输出。 激光驱动器包括用于对检测到的激光输出进行积分的积分器,从而利用积分信号作为半导体激光驱动信号。 积分器将对应于检测到的激光输出的电压与对应于预定的恒定激光输出的基准电压进行积分。

    Image reading apparatus and image forming apparatus
    4.
    发明授权
    Image reading apparatus and image forming apparatus 失效
    图像读取装置和图像形成装置

    公开(公告)号:US06750989B1

    公开(公告)日:2004-06-15

    申请号:US09619769

    申请日:2000-07-19

    IPC分类号: H04N132

    摘要: An image reading apparatus, comprises an image reader to read images of a document; a rotation processor to conduct a rotation processing for image data obtained through reading by the image reader in accordance with inclination of the document; a memory in which image data subjected to rotation processing by the rotation processor are stored; and an external inputting device to input arbitrary rotation angles. When the rotation angles are inputted from the external inputting device, the image data obtained through reading by the image reader are subjected to the rotation processing in accordance with the inputted rotation angle and are stored in the memory.

    摘要翻译: 一种图像读取装置,包括:图像读取器,用于读取文件的图像; 旋转处理器,用于对由图像读取器读取而获得的图像数据进行旋转处理,根据文档的倾斜度; 存储由旋转处理器进行旋转处理的图像数据的存储器; 以及输入任意旋转角度的外部输入装置。 当从外部输入装置输入旋转角度时,通过图像读取器读取获得的图像数据根据输入的旋转角度进行旋转处理并被存储在存储器中。

    Image forming apparatus that modulates image density data
    7.
    发明授权
    Image forming apparatus that modulates image density data 失效
    图像形成装置,用于调制图像密度数据

    公开(公告)号:US5493411A

    公开(公告)日:1996-02-20

    申请号:US468386

    申请日:1995-06-06

    CPC分类号: H04N1/52 H04N1/4056 H04N1/58

    摘要: In an image forming machine, density data of small pixels in an objective pixel determined according to density of pixels adjoining the objective pixels, the objective pixel determines a recording position for each color based on density distribution of the adjoining pixels when the recording position of each color is modulated in the primary scanning direction and secondary scanning direction based on density distribution of both the objective pixel and the adjoining pixels. Further, there are provided an image discriminator for image judgment on the objective pixel and a modulator for modulating a recording position using a reference wave with a long cycle when an image is judged to be a halftone image area under a reference wave with a short cycle when an image is judged to be a character image area.

    摘要翻译: 在图像形成机中,根据与目标像素相邻的像素的密度确定的目标像素中的小像素的浓度数据,当每个像素的记录位置为每个像素的记录位置时,目标像素基于相邻像素的密度分布确定每种颜色的记录位置 基于目标像素和相邻像素的密度分布,在主扫描方向和副扫描方向上调制颜色。 此外,提供了一种用于对目标像素进行图像判断的图像鉴别器,以及当在短周期的基准波下判断图像为半色调图像区域时,使用具有长周期的参考波来调制记录位置的调制器 当图像被判断为字符图像区域时。

    Digital image forming apparatus using subdivided pixels
    8.
    发明授权
    Digital image forming apparatus using subdivided pixels 失效
    使用细分像素的数字图像形成装置

    公开(公告)号:US5486927A

    公开(公告)日:1996-01-23

    申请号:US927746

    申请日:1992-08-10

    CPC分类号: H04N1/40068 H04N1/4056

    摘要: In a method of forming an image in a form of pixels, the density distribution around a target pixel is obtained by processing image signals of pixels neighboring the target pixel. The target pixel is sub-divided into a plurality of sub-pixels which form of matrix of n rows.times.m columns. The sub density distribution of the sub-pixels in the target pixel is assumed from the density distribution of the neighboring pixels. The density of each of sub-pixels is determined by multiplying the density of the target pixel, by a constant P and a density ratio of the corresponding sub-pixels in the sub density distribution.

    摘要翻译: 在以像素形式形成图像的方法中,通过处理与目标像素相邻的像素的图像信号来获得目标像素周围的密度分布。 目标像素被分割为形成n行x列的矩阵的多个子像素。 目标像素中的子像素的子密度分布由相邻像素的密度分布假定。 每个子像素的密度通过将目标像素的密度乘以常数P和子密度分布中相应子像素的密度比来确定。

    Image forming apparatus to provide multicolor images
    9.
    发明授权
    Image forming apparatus to provide multicolor images 失效
    图像形成装置提供多色图像

    公开(公告)号:US5374950A

    公开(公告)日:1994-12-20

    申请号:US142079

    申请日:1993-10-28

    摘要: In a color toner image forming apparatus equipped with a scanning device to scan a photoreceptor with a light beam which is modulated on the basis of image density represented by image signals so that a latent image is formed on the photoreceptor; there is provided a control device to control the color toner image forming apparatus so that plural color toner images are superimposed on the photorecetor. The control device includes a start position control circuit to control a scanning start position of the scanning device so that the scanning start position is shifted for each of the plural color component images.

    摘要翻译: 在具有扫描装置的彩色调色剂图像形成装置中,用基于由图像信号表示的图像浓度调制的光束扫描感光体,使得在感光体上形成潜像; 提供了一种用于控制彩色调色剂图像形成装置的控制装置,使得多个彩色调色剂图像叠加在光电倍增管上。 控制装置包括控制扫描装置的扫描开始位置的开始位置控制电路,使得扫描开始位置对于多个颜色分量图像中的每一个移动。

    Image forming apparatus
    10.
    发明授权
    Image forming apparatus 失效
    图像形成装置

    公开(公告)号:US5331432A

    公开(公告)日:1994-07-19

    申请号:US42598

    申请日:1993-04-02

    CPC分类号: H04N1/4056

    摘要: An apparatus for forming an image with modulated image lights which are obtained by modulating an image light in accordance with image signals, including a reference pattern signal generation circuit, a comparator to compare image signals with a reference pattern signal so as to produce a pulse width modulation signal, and a circuit to shift the level of the image signal of either a maximum or minimum value to a level out of the amplitude of the reference pattern signal.

    摘要翻译: 一种用于通过根据包括参考图案信号生成电路的图像信号调制图像光而获得的具有调制图像光的图像的装置,比较器,用于将图像信号与参考图案信号进行比较,以产生脉冲宽度 调制信号,以及使最大或最小值的图像信号的电平移动到参考图形信号的幅度之外的电平的电路。