Patent ID: 8290382

Claim:
An image forming apparatus comprising: an image carrier; a toner image formation mechanism for forming a toner image on the image carrier; a transfer member, provided at a position at which the transfer member can be pressed against the image carrier, for transferring the toner image, formed on the image carrier, onto a transferred material; a detection device for detecting a toner attachment amount of the toner image formed on the image carrier; and a control section, wherein the control section comprises: an avoidance judging section for judging whether or not avoidance of a pressed region should be performed when a toner image for image formation is formed on the image carrier, the pressed region serving as a region located on the image carrier and being pressed against the transfer member from the end of a previous image forming operation to the start of a present image forming operation; and a first avoidance continuation judging section for judging the necessity for continuation of the avoidance by being operated when it is judged by the avoidance judging section that the â€œavoidance should be performedâ€, and wherein the first avoidance continuation judging section comprises: a recognition part for recognizing the position of the pressed region; a first formation part for forming a detection toner image on the pressed region and an adjacent region of the pressed region by the toner image formation mechanism; a first detection part for detecting, by the detection device, a toner attachment amount of the detection toner image formed on the pressed region and a toner attachment amount of the detection toner image formed on the adjacent region of the pressed region; and a first decision part for calculating a difference between both of the toner attachment amounts, thus deciding the necessity for continuation of the avoidance based on whether or not this difference falls within a given range.