Patent ID: 9081360
Filing Date: 2015-07-14
Classification: G03G

Abstract:
1. An image formation apparatus performing light exposure scanning based on image data of a target page, thereby forming a toner image on a charged image carrier surface of a photosensitive body, applying electrical charge to the image carrier surface, while rotating the photosensitive body, in order to remove residual charge from the photosensitive body, during a period between completion of said light exposure scanning and commencement of light exposure scanning based on image data of a next page, and performing a first control on rotation distance of a circumference of the photosensitive body during the period such that the rotation distance is a predetermined distance that is shorter than circumferential length of the photosensitive body, the image formation apparatus comprising: a coverage calculation unit configured to calculate, for the target page, a coverage value indicating surface area of a toner deposition region as a proportion of surface area of an image formation region of the target page; a prediction unit configured to, when an inter-image distance between a trailing end of an image of the target page in terms of a sub-scanning direction and a leading end of an image of the next page in terms of the sub-scanning direction is shorter than the circumferential length of the photosensitive body, perform a prediction as to whether or not image noise will occur in the image of the next page, based on the coverage value calculated for the target page; and a sheet interval control unit configured to, upon the prediction unit predicting that image noise will occur, suspend the first control and perform a second control on the rotation distance of the circumference of the photosensitive body during the period such that the inter-image distance is extended to be at least as long as the circumferential length of the photosensitive body.