Brumbaugh, Graves, Donohue & Raymond
Roller for use in a photographic sheet material processing apparatus
 A roller, for use in a photographic sheet material processing apparatus, comprises a core (32) provided with a covering of relatively soft material (34). The roller has a length (L) of from 0.4 to 2.0 m. The core has a maximum diameter (D) of less than 0.04*L m. The roller is characterised by having a deflection as measured by a specific test and a weight (W) below levels defined by a specified boundary condition formulae (1) & (2). Rollers satisfying this condition are characterised in that the core is formed of a composite material comprising fibers and a resin matrix. Such rollers have a relatively small diameter, are light and yet still have sufficient stiffness to avoid substantial wrinkling of the sheet material in the apparatus and to satisfy the requirements of high processing quality. 
Agfa-Gevaert N.V.
G
G03D
inventional
Ludo Bart Jan Bartholomeus
Van Schepdael Verhoest Claes Verlinden