Patent ID: 7113723

Claim:
An image forming device comprising: a photoreceptor; an endless type belt-like member wound around a plurality of support members at least one of them having a roller shape, with the outer periphery surface brought into contact with said photoreceptor; a blade-like member having a contact part extending in parallel in the axial direction of said at least one support member, with the contact part pressed against said at least one support member having the roller shape; and tapered parts provided on both end parts in the axial direction of the said at least one support member having the roller shape, and sloped to have reduced outer diameters toward both end parts in the axial direction, said blade-like member extending axially beyond said tapered parts of said at least one support member so as to apply a substantially constant pressure to said belt member in an area of said belt member which is between said tapered parts of said end parts of said at least one support member.