| 摘要 |
PURPOSE:To reduce the force of winding film by positioning guiding rollers which linearly guide the film between both film entrance and exit parts at the respective film entrance and exit parts and respectively fitting them in both cartridge so that they can freely rotate. CONSTITUTION:The film 7 extending over both cartridges 2 and 3 is linearly guided by the guiding rollers 10 and 12 between both film entrance and exit parts 8 and 9. Therefore, the film 7 is made to pass in gaps provided in the film entrance and exit parts 8 and 9 which constitute a light shielding part, so that the film 7 can be prevented from coming into contact with internal and external light shielding wall parts 8a, 8b, 9a and 9b. Since the film 7 can be made to pass between both film entrance and exit parts 8 and 9 without being held and brought into contact with the light shielding wall parts 8a, 8b, 9a and 9b, a light shielding structure hardly becomes frictional resistance at the time of winding the film 7. Thus, the resistance at the time of winding the film becomes minimum and the force of winding film is reduced. |
