Magnetic tape cartridge
AssigneeFuji Photo Film Co., Ltd.
InventorsHidetoshi Yamamoto, Kenji Ishikawa, Yusuke Ishihara, Naoki Okutsu
Life of this patent
Estimating the term…
Abstract
A magnetic tape cartridge includes an opening 1C through which a magnetic tape is drawn out, and a slide door 6 that slides along a sidewall 1D provided with the opening 1C to open and close the opening 1C. The opening 1C is provided in part of the sidewall 1D across a lower half 1A and an upper half 1B of the cartridge case 1. At least one of a lower half portion and an upper half portion of the sidewall is provided with a holding groove 1L that receives a front end portion 6A of the slide door 6 when the opening is closed. Therefore, the upper half 1B and the lower half 1A of the magnetic tape cartridge may be smoothly combined.
Claims8
A magnetic tape cartridge comprising:
- an opening through which a magnetic tape is drawn out, the opening being provided in part of a sidewall of a cartridge case across a lower half and an upper half of the cartridge case;
- and
- a slide door that slides along the sidewall provided with the opening to open and close the opening,
- wherein at least one of a lower half portion and an upper half portion of the sidewall is provided with a holding concave portion that receives a front end portion of the slide door when the opening is closed.
A method of assembling a magnetic tape cartridge comprising the steps of:
- providing an opening through which a magnetic tape is drawn out in part of a sidewall of a cartridge case across a lower half and an upper half of the cartridge case;
- mounting a slide door that opens and closes the opening between guide portions each provided in the lower half and the upper half, while stressing the slide door with a spring member toward a position in which the opening is closed,
- wherein the mounting step includes:
- mounting the slide door stressed with the spring member toward the position in which the opening is closed by fitting a lower edge of the slide door into the guide portion of the lower half;
- keeping a mounting position of the slide door by holding an end of the slide door facing a direction in which the slide door moves to close the opening with a chuck device;
- and
- combining the upper half with the lower half.
A method of assembling a magnetic tape cartridge comprising the steps of:
- providing an opening through which a magnetic tape is drawn out in part of a sidewall of a cartridge case across a lower half and an upper half of the cartridge case;
- mounting a slide door that opens and closes the opening between guide portions each provided in the lower half and the upper half, while stressing the slide door with a spring member toward a position in which the opening is closed,
- wherein the mounting step includes:
- mounting the slide door stressed with the spring member toward the position in which the opening is closed by fitting a lower edge of the slide door into the guide portion of the lower half;
- holding the slide door by pressing an appropriate spot of an end of the slide door facing a direction in which the slide door moves to close the opening so that the end of the slide door facing the direction in which the slide door moves to close the opening is prevented from rising out due to stress imposed by the spring member;
- and
- combining the upper half with the lower half.
An assembly supportive device which guides a distal end of a spring support rod onto a support rod receiving block provided on a lower half of a cartridge case when a slide door for opening/closing an opening through which a magnetic tape of a magnetic tape cartridge is drawn out is fitted in the lower half of the cartridge case, a proximal end of the spring support rod being projected from the slide door, around which spring support rod a compression coil spring is wound, the assembly supportive device comprising:
- a guide member having a V-shaped groove that receives the distal end of the spring support rod;
- and
- a positioning device capable of moving the guide member from a retraction position outside the lower half to a use position over the support rod receiving block on the lower half,
- wherein the guide member is formed with a slit so provided as to cut through a bottom of the V-shaped groove partway from one end.
Dependencies are inferred from the claim text.