Method and printing plate for adjusting exposure heads in an exposure unit for print data

摘要

A test exposure is performed with each exposure head to record a test area and a background area in the recording band of the exposure head (11). The recorded areas of the background area and the test area of the adjacent test pattern formed with each exposure head are compared visually to calculate the difference between the recorded areas to correct a laser power level. - An INDEPENDENT CLAIM is also included for test pattern for equalizing exposure head.