PRINT IMAGE CHECKING DEVICE,申请号JP19980112984-传众专利搜索

PRINT IMAGE CHECKING DEVICE

申请公布号：JPH11300938(A)

申请号：JP19980112984

申请日期：1998.04.23

申请公布日期：1999.11.02

申请人：

TOKYO KIKAI SEISAKUSHO LTD

发明人：MIYAUCHI CHUJI;AIHARA KAZUO

分类号：B41F33/14;G01J3/46;G06T1/00;H04N1/04

主分类号：B41F33/14

摘要：PROBLEM TO BE SOLVED: To enhance the accuracy of a check by reading each of ink images such as yellow, magenta and black from the reflected light of a blue color light emitted to a print image and each of ink images such as cyan, magenta and black from the reflected light of a yellow color light. SOLUTION: A light source driver outputs a light source blinking signal to an image reading part 2 based on a control signal from a control part each time a web W travels to be displaced by a predetermined amount. The image reading part 2 makes a blue color light emitting diode 21B and a yellow color light emitting diode 21Y emit lights based on the light source blinking signal and thereby the web W is exposed to the light. The light from the blue color light emitting diode 21B is reflected by the print image portion of the cyan ink and the white texture of the web W to be a 'bright' reflected light while the light is adsorbed by the portion other than the bright portion to be a 'dark' reflected light. The light of the yellow light emitting diode 21Y is reflected by the print image portion of the yellow ink and the white texture of the web W to be a 'bright' reflected light, while the light is absorbed by the portion other than the bright portion to be a 'dark' reflected light.