JP2012212190A5 - - Google Patents

Description

The above object is achieved by the image forming apparatus according to the present invention. In summary, the present invention is provided an image bearing member for bearing a toner image, a movable belt member in contact with the image bearing member, at a position opposed to the image carrier across the belt body a transfer unit was, have a, and a voltage applying means for applying a voltage to the transfer means, that the voltage to the transfer means is applied by said voltage applying means, the toner image is the belt on the image bearing member in the image forming apparatus is transferred to the body or the transfer material carried on said belt member, wherein the transfer means is in contact with the surface before Symbol belt member is sandwiched the elastic member and the elastic member, and the belt body sheet The sheet member is bent so that a portion of the elastic member upstream of the upstream end surface of the elastic member is separated from the belt member with respect to the moving direction of the belt member. Downstream from the end face on the downstream side It is an image forming apparatus, comprising the parts are separated and the elastic member.

Claims (10)

An image carrier that carries a toner image; a belt member that is movable in contact with the image carrier; a transfer unit provided at a position facing the image carrier across the belt member; and the transfer unit to possess and voltage applying means for applying a voltage, and said that voltage to the transfer means is applied by the voltage applying means, the toner image on the image bearing member is supported on the belt member or said belt member In the image forming apparatus transferred to the transfer material ,
It said transfer means includes an elastic member, and the sheet member to surface contact with the belt body and the SL prior sandwiched elastic member belt member, and
The seat member is bent with respect to the moving direction of the belt body so that a portion upstream from the upstream end surface of the elastic member is separated from the belt body, and is downstream from the downstream end surface of the elastic member. The image forming apparatus is characterized in that the portion is separated from the elastic member .   The downstream end of the sheet member is located downstream of the downstream end of the contact area between the image carrier and the belt member, and the downstream end of the elastic member is the contact between the image carrier and the belt member. The image forming apparatus according to claim 1, wherein the image forming apparatus is located downstream of the downstream end of the region and upstream of the downstream end of the sheet member.   The image forming apparatus according to claim 1, wherein the elastic member has a substantially rectangular parallelepiped shape, and one surface is in surface contact with the sheet member.   The thickness of the said elastic member is larger than the thickness of the said sheet member regarding the direction which clamps the said sheet member with the said belt body and the said elastic member, The Claim 1 characterized by the above-mentioned. The image forming apparatus described in 1. With respect to the moving direction of the said belt body claims 1 to 4, characterized in that the entire area of the contact area between the elastic member and the sheet member is present in the contact area between the sheet member and the belt member The image forming apparatus according to claim 1.   The image forming apparatus according to claim 1, wherein a downstream end of the sheet member in the moving direction of the belt body is a free end. The elastic member is an image forming apparatus according to any one of claims 1 to 6, characterized in that a foamed sponge body.   The image forming apparatus according to claim 7, wherein the foamed sponge body is urethane foam.   The image forming apparatus according to claim 1, further comprising a pressing member that presses the elastic member toward the image carrier.   10. The image carrier according to claim 1, wherein a plurality of the image carrier and the transfer means opposed to the image carrier exist corresponding to different color toners. The image forming apparatus described.