TAPE REEL DEVICE AND TAPE CARTRIDGE EQUIPPED WITH TAPE REEL

摘要

PROBLEM TO BE SOLVED: To prevent shaft run-out of a core while imparting an appropriate back tension to a tape shape member.;SOLUTION: The tape reel device comprises a core 21 around which a tape shape member 12 is wound to be fed out freely, cases 3 and 4 for containing the tape shape member 12 and the core 21, a first bearing 22 and a second bearing 4a provided on a pair of opposing walls of the cases 3 and 4 and straddlingly bearing the core 21 rotatably on the opposite sides thereof, a bearing sliding portion 24a provided on one end face of the core 21 born by at least one bearing 22 coaxially therewith and coming into rotary contact with the first bearing 22, and a means 25 for urging the bearing sliding portion 24a relatively to the first bearing 22 wherein at least one of the first bearing 22 and the bearing sliding portion 24a has a recess and the other has a protrusion. The first bearing 22 and the bearing sliding portion 24a come into line contact with with each other circularly in the circumferential direction and at an angle in the radial direction through the recess and the protrusion.;COPYRIGHT: (C)2007,JPO&INPIT