1. Field of the Invention
The present invention relates to an image forming apparatus.
2. Description of Related Art
Conventionally, in a full color image forming apparatus in which multiple photosensitive drums are made to contact a feeding belt and rotate, when printing information is sent from a host apparatus such as an information processing apparatus, activation of the photosensitive drums and activation of the feeding belt begin at approximately the same time to print a developer image, based on the printing information, onto a recording medium such as paper.
However, in conventional image forming apparatuses, because the printing process is begun without eliminating the sag previously existing in the feeding belt, a color shift occurs in the image printed on the paper fed with the sag, which leads to the problem that a high quality image cannot be printed. Here, the feeding belt is driven a prescribed amount before initiating the printing process to eliminate the sag arising in the feeding belt, but such a case is not desirable because of the time required from when the printing apparatus receives the printing information to the time when the printing process is initiated.
USPTO Backgrounds
USPTO Backgrounds