Patent ID: 6883801
Filing Date: 2005-04-26
Classification: B41C,B41F,H04N

Abstract:
1. A holding apparatus for a sheet member which has a density c and a thickness t, the apparatus comprising: (a) a rotary body having a radius r and an outer peripheral surface around which the sheet member can be wound, a coefficient of maximum rest friction between the sheet member and the outer peripheral surface being μ (b) a support attached to the outer peripheral surface of said rotary body; (c) an arm comprising two end portions and an arm portion supported by said support between said two end portions, said arm having a weight m per unit length in an axial direction of said rotary body, said arm being pivotable about a fulcrum at said arm portion, said arm having a clamp section provided at one of said end portions at a distance L (d) a resiliently deformable element connected to said other end portion of said arm and which, when said support is attached to said rotary body, is resiliently deformed such that a pressure force T wherein a tensioning force F acts to move the sheet member along a stretching direction along the outer peripheral surface of said rotary body, and the expression μ