Image forming apparatus
    1.
    发明申请
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号:US20020015165A1

    公开(公告)日:2002-02-07

    申请号:US09842036

    申请日:2001-04-26

    IPC分类号: G06K001/00

    摘要: In a color image forming apparatus, component color images formed by respective image forming stations are sometimes displaced as they are transferred onto recording paper. Therefore, a set pattern image (Q0) with no displacement at all is recorded onto recording paper as a set pattern image (Q1). In this set pattern image, the centers of auxiliary patterns (Y1, C1, M1) are displaced in an auxiliary scan direction off a referential straight line (H) passing through the centers of primary patterns (K1, K1null). The image forming apparatus causes the set pattern image to be read, measures the displacements (nullY1, nullC1, nullM1) of the auxiliary patterns in the auxiliary scan direction off the referential straight line, and adjusts writing timings in the auxiliary scan direction so that the displacements become 0. As a result, the color image recorded on the recording paper shows improved quality. Therefore, the resist of the component color images can be corrected by measuring the displacements of the component color images without being affected by a tilt of the patterns on the recording paper or irregularity in operation of the image forming stations for recording the component color images.

    摘要翻译: 在彩色图像形成装置中,由各个图像形成站形成的分量彩色图像在被转印到记录纸上时有时会移位。 因此,完全没有位移的设定图案图像(Q0)被记录在记录纸上作为设定图案图像(Q1)。 在该设定图案图像中,辅助图案(Y1,C1,M1)的中心在辅助扫描方向上偏离通过主图案(K1,K1')的中心的参考直线(H)。 图像形成装置使得设置的图案图像被读取,测量辅助扫描方向上的辅助图案离开参考直线的位移(DELTAY1,DELTAC1,DELTAM1),并且调整辅助扫描方向上的写入定时,使得 位移变为0.结果,记录在记录纸上的彩色图像显示出提高的质量。 因此,可以通过测量分量彩色图像的位移而不受记录纸上的图案的倾斜的影响或用于记录分量彩色图像的图像形成站的操作的不规则性来校正分量彩色图像的抗蚀剂。