CARTRIDGE

摘要

PROBLEM TO BE SOLVED: To provide a cartridge which is suitable for a cartridge of a large moving quantity of a shutter, is dealable with a cartridge for one side and a cartridge for both sides and is capable of surely preventing the accidental insertion of the cartridge. SOLUTION: The cartridge 1 has at least one corners 4 which have a substantially rectangular shape and have a shape coming into contact with accidental insertion preventive members so as to move the accidental insertion preventive members to the outside of an insertion route and at least one accidental insertion preventive mechanisms 5 engaging with the accidental insertion preventive members so as to prevent the accidental insertion of the cartridge 1. The cartridge 1 is substantially in a direction perpendicular to the surface of the disk and has two flank formed in a direction substantially parallel with the insertion direction of the cartridge. The insertion preventive mechanisms 5 is provided at least on the one flank.