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1. (WO2000062296) MAGNETIC TAPE CASSETTE, ITS PART, METHOD FOR MOLDING THE PART, METHOD FOR MARKING MOLDED PRODUCT, AND MOLDED PRODUCT

Pub. No.:    WO/2000/062296    International Application No.:    PCT/JP2000/002323
Publication Date: Oct 19, 2000 International Filing Date: Apr 10, 2000
IPC: G11B 23/087
Applicants: FUJI PHOTO FILM CO., LTD.

NAKANE, Takanobu

NISHIYAMA, Shigeru

Inventors: NAKANE, Takanobu

NISHIYAMA, Shigeru

Title: MAGNETIC TAPE CASSETTE, ITS PART, METHOD FOR MOLDING THE PART, METHOD FOR MARKING MOLDED PRODUCT, AND MOLDED PRODUCT
Abstract:
A magnetic tape cassette comprises a lower half or slider having a recess (groove) in one side along and near a positioning groove for driving a magnetic tape formed in the other side, a slider having a dust-proof wall at its engagement sliding part, a brake member having a thin part at the back opposite to the sliding surface of a horizontal plate part and having a generally constant thickness, a lower half or slider formed symmetrically and having a groove for providing a marked part, and a plate spring having a throttle part at least at the plate surface of one of a center bent part and an arm part. The slider is so molded that the side wall can move up onto the side-core of a mold for molding the side wall when the mold is opened after the molding by rounding at least the upper and lower edges of the vertical wall of the side-core, and thus the slider has an excellent moldability and an excellent appearance without sacrificing its dimensional accuracy.