Image forming apparatus with random density pattern growth
    2.
    发明授权
    Image forming apparatus with random density pattern growth 失效
    具有随机密度模式生长的图像形成装置

    公开(公告)号:US5446550A

    公开(公告)日:1995-08-29

    申请号:US25800

    申请日:1993-03-03

    CPC分类号: H04N1/4056

    摘要: An image processing apparatus in which a density pattern is generated which corresponds to input image data. Growth direction of the density pattern is controlled by generating a density pattern in a prescribed direction, and generating a density pattern in a direction based on a random signal. As a result, when printing the image data based on the generated density patterns, there is no joining between adjacent pixels and a high-quality image is produced.

    摘要翻译: 一种其中生成与输入图像数据相对应的浓度图案的图像处理装置。 密度图案的生长方向通过在规定的方向上生成浓度图案,并且基于随机信号在方向上产生浓度图案来控制。 结果,当基于生成的密度图案打印图像数据时,相邻像素之间不存在连接,并且产生高质量图像。

    Halftone image recording apparatus and method based on first and second
timing signals chosen from a plurality of synchronized clocks
    3.
    发明授权
    Halftone image recording apparatus and method based on first and second timing signals chosen from a plurality of synchronized clocks 失效
    基于从多个同步时钟中选择的第一和第二定时信号的半色调图像记录装置和方法

    公开(公告)号:US5760811A

    公开(公告)日:1998-06-02

    申请号:US21851

    申请日:1993-02-24

    CPC分类号: H04N1/40037 G06K15/128

    摘要: A half-tone image recorder in which input digital data is represented by a plurality of bit data for each pixel. A data conversion device outputs digital data indicative of a recording-start position and a recording-end position, based on the input digital data. A recording device such as a laser printer records an image in accordance with the output digital data from the data conversion device. The data conversion device controls a first value of the digital data indicative of the recording-start position and a second value of the digital data indicative of the recording-end position so as to change a black-area growing direction within one pixel in the recorded image. This results in the recordation of a high-quality half-tone image without conspicuous vertical stripes and without conspicuous white stripes in the main-scanning direction of the recording device due to pitch irregularity.

    摘要翻译: 一种半色调图像记录器,其中输入数字数据由每个像素的多个位数据表示。 数据转换装置基于输入的数字数据输出指示记录开始位置和记录结束位置的数字数据。 诸如激光打印机的记录装置根据来自数据转换装置的输出数字数据记录图像。 数据转换装置控制指示记录开始位置的数字数据的第一值和指示记录结束位置的数字数据的第二值,以便改变所记录的记录结束位置的一个像素内的黑色区域生长方向 图片。 这导致由于间距不规则而在记录装置的主扫描方向上记录高质量的半色调图像而没有明显的垂直条纹和没有明显的白色条纹。

    Image forming apparatus having prediction of development time and mode change
    10.
    发明授权
    Image forming apparatus having prediction of development time and mode change 有权
    具有开发时间和模式变化预测的图像形成装置

    公开(公告)号:US06266497B1

    公开(公告)日:2001-07-24

    申请号:US09396879

    申请日:1999-09-16

    IPC分类号: G03G1500

    摘要: An image forming apparatus which forms images onto a plurality of pages has prediction unit which predicts a development processing time to develop a band of intermediate data based on print data to a bit map image and a controller which switches from a first mode to form one page or second mode to form images of a plurality of pages depending on the prediction information calculated by the prediction device. Thus the throughput can be increased by controlling the print data and a band development schedule.

    摘要翻译: 在多页上形成图像的图像形成装置具有预测单元,该预测单元基于打印数据预测开发处理时间以将打印数据开发到位图图像,以及控制器,其从第一模式切换到一页 或第二模式,以根据由预测装置计算的预测信息形成多个页面的图像。 因此,可以通过控制打印数据和频带开发进度来增加吞吐量。