Patent ID: 6652166
Filing Date: 2003-11-25
Classification: G03B,Y10T

Abstract:
A photographic film cartridge comprising:a light-shielding cloth that is attached to a photographic film cartridge outlet slit through which a film is drawn out; the light-shielding cloth being a cloth that is subjected to napping; the napping comprising napping with a coarse napping machine and then napping with a fine napping machine, the napping machines having napper rollers comprising a pile roller that rotates in the direction in which the cloth advances and a counter roller that rotates in the direction opposite to the direction in which the cloth advances, the rotational speed of the pile roller of the fine napping machine being higher than the rotational speed of the pile roller of the coarse napping machine and the rotational speed of the counter roll of the coarse napping machine being higher than the rotational speed of the counter roller of the fine napping machine; the napping being carried out so that the cloth thickness obtained by napping using the fine napping machine is less than the cloth thickness obtained by napping using the coarse napping machine; and a further napping being carried out using the fine napping machine so that the cloth thickness is greater than the cloth thickness obtained by napping using the coarse napping machine.