| 摘要 |
A sheet member holding apparatus (204) which holds a winding direction end portion of a sheet member (202) that is wound around a rotary body (200). Centrifugal force generated by rotation of the rotary body is efficiently utilized to hold the end portion securely and prevent looseness or the like of the sheet member, because the holding apparatus is designed such that the expression ä( mu 1 + mu 2) x (L2/L1) x mü > c x r x t is satisfied. L1 is distance from a fulcrum (206) to a clamp section (212), L2 is distance from the fulcrum (206) to a center of gravity (214), m is mass of a plate of the apparatus per unit length in the rotary body's axial direction, t is thickness and c is density of the sheet member, and mu 1 and mu 2 are coefficients of friction between the sheet member (202) and, respectively, the clamp section (212) and the rotary body (200). <IMAGE> |
