IMAGE FORMATION APPARATUS AND CONTROL METHOD OF IMAGE FORMATION APPARATUS

摘要

PROBLEM TO BE SOLVED: To reduce a positional deviation caused by time-division light emission and prevent a density variation due to a difference in a rotation speed of a photoreceptor when performing the time-division light emission.SOLUTION: Time-division driving is performed by respectively controlling light emission of LED devices by group in a predetermined light emission period. In response to a determination of linear velocity according to a sheet, a pattern for density correction is drawn and a density correction value is generated.SELECTED DRAWING: Figure 16