METHOD AND DEVICE FOR AUTOMATICALLY ADJUSTING IMAGE LINE SENSOR READ START TIME, RECORDING MEDIUM HAVING PROGRAM FOR AUTOMATICALLY ADJUSTING IMAGE LINE SENSOR READ START TIME RECORDED THEREON, AND RECORDING MEDIUM HAVING IMAGE DATA READ PROCESSING PROGRAM RECORDED THEREON

摘要

PROBLEM TO BE SOLVED: To efficiently adjust an image line sensor read start time. SOLUTION: In the control part, a carrier roller 5 driven by a carrier motor 10 carries a reference medium, an image sensor drive circuit 8 drives an image line sensor 1 just after an image read start sensor 2 detects the tip of the reference medium, and the output data of the image line sensor are expanded in an image buffer 4 through an image sensor input circuit 9. After that, the black image line number Z is counted from the head line of the image buffer 4 until the tip edge of the reference medium. Subtracting a black image line number Y required to detect the tip edge of the reference medium in image data from the black image line number Z, a line number X is obtained to calculate the image line sensor read start time after the detection of the tip edge of the reference medium, which is stored as a soft parameter.