Patent ID: 6163334
Filing Date: 2000-12-19
Classification: G06K,H04N

Abstract:
An image forming device comprising a plurality of image optical scanning recording sections, each image optical scanning recording section starting image recording by line scanning in accordance with an image signal when the number of clocks of a reference clock signal counted in synchronization with a line scanning synchronizing signal reaches a predetermined number, wherein:at least one of said image optical scanning recording sections has frequency varying means for varying a frequency of the reference clock signal thereof,said image forming device further comprising:control means for controlling said frequency varying means so as to adjust the frequency of the reference clock signal based on an offset of an image recording start position of said image optical scanning recording section in a main scanning direction crossing a proceeding direction of a transfer material so that the image recording start position coincides with an image recording start position of the other image optical scanning recording section; andwherein:the image signal is composed of color image signals resulting on color decomposition;the plurality of said image optical scanning recording sections correspond to the color image signals, respectively, andpairs of said image optical scanning recording sections are formed, and said control means controls the reference clock signals so that in each pair, a reference clock signal of one image optical scanning recording section is adjusted by referring to a reference clock signal of the other image scanning recording section.