Reel of magnetic tape cartridge
AssigneeFuji Photo Film Co., Ltd.
InventorsHideaki Shiga, Seiji Tsuyuki
Life of this patent
Estimating the term…
Abstract
In the reel of a magnetic tape cartridge, in which the reel with magnetic tape wound thereon is rotatably housed in a cartridge case, a magnetic metal plate is molded integrally on a reel bottom surface by insert molding. The metal plate is formed into an annular shape having a central hole. In a reel bottom wall closing the central hole of the metal plate with resin injected from a gate at the center of the central hole of the metal plate when the insert molding is performed, a recess is formed between a gate trace at the center portion of the bottom wall and an inner peripheral surface of the central hole of the metal plate.
Claims2
A single reel of a magnetic tape cartridge in which the reel with magnetic tape wound thereon is rotatably housed in a cartridge case,
- a magnetic metal plate being molded integrally on a reel bottom surface by insert molding;
- said metal plate being formed into an annular shape having a central hole;
- and
- in a reel bottom wall closing said central hole of said metal plate with resin injected from a gate at the center of said central hole of said metal plate when said insert molding is performed, a recess being formed between a gate trace at the center portion of said bottom wall and an inner peripheral surface of the central hole of said metal plate.
Dependencies are inferred from the claim text.