| 摘要 |
<p>PURPOSE:To accurately align the developing position of each color by correcting the degree of slur so that dots of magenta toner and dots of cyan toner are arranged in a dot line based on the dots of yellow toner as a reference. CONSTITUTION:Three exposure LED arrays 21, 24, 27 are recorded by using a light timing clock at the same interval of the array 21 over the entire circumference of a photosensitive drum and the recording state of the toner of each color is expanded partially and checked. Each dot of yellow, magenta and cyan is recorded while being slurred in the direction of rotation of the photosensitive drum and the deviation is measured corresponding to an output pulse interval of a rotary encoder 1 based on the dots of yellow color. Then the light timing of the exposure LED array recording magenta and cyan is written in each ROM to form a light timing clock generating means.</p> |
