Patent ID: 6390700
Filing Date: 2002-05-21
Classification: B41J,F16C

Abstract:
An imaging apparatus, comprising:a frame; a feed roller assembly, said feed roller assembly including a feed roller shaft having a cylindrical shaft surface and at least one feed roller secured to said feed roller shaft, said cylindrical shaft surface being defined by a shaft radius extending from a rotational axis of said feed roller shaft; and at least one bearing coupled to said frame and positioned for locating said feed roller shaft in rotatable engagement with said at least one bearing, said bearing including: a first bearing flank including a first bearing surface having a shape in cross-section defined by a first arc having a first radius extending from a first surface axis; and a second bearing flank including a second bearing surface having a shape in cross-section defined by a second arc having a second radius extending from a second surface axis, wherein said first bearing flank and said second bearing flank are structured and adapted such that said first bearing surface and said second bearing surface together in cross-section form a concave shape in which said first bearing surface and said second bearing surface are non-concentric, and wherein a portion of each of said first bearing surface and said second bearing surface contact said cylindrical shaft surface.