PAPER GUIDING DEVICE TO PHOTOSENSITIVE DRUM IN IMAGE FORMING DEVICE

摘要

PURPOSE:To excellently carry out the transfer of an image by controlling the size of a loop formed by paper fed from a paper carrying path at a position where a toner image formed on a photosensitive drum is transferred to paper according to the stiffness of the paper. CONSTITUTION:The stiffness of the paper is measured by arranging a sensor 15 for measuring the pressurizing force of the loop Pr of the paper to a paper fitting device 10 arranged uptream of an image transfer part from the photosensitive drum 1 and matched by forming a loop on the paper. Furthermore, a driving device 7 for rocking an upper guide plate 5 is arranged between a resist roller device 11 and a photosensitive drum and the size of the loop Ps is controlled by rocking the upper guide plate according to the information outputted from a controller 20 according to the information of the strength of the paper. Then, turbulence in the image is prevented without rubbing the drum surface by the force of the loop by allowing the position of the paper at an image transfer part to be controlled.