US 6,712,303 B2Granted

Magnetic tape cartridge

AssigneeFuji Photo Film Co., Ltd.

InventorsYusuke Ishihara, Hideaki Shiga, Kiyoo Morita, Daisuke Takahashi, Seiji Tsuyuki

Life of this patent

Estimating the term…

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Abstract

A magnetic tape cartridge includes a cartridge casing, a single reel which is housed in the cartridge casing for rotation and around which a magnetic tape is wound, the leader pin which is fixed to the leading end of the magnetic tape in order to draw out the magnetic tape from the cartridge casing, a lock member which is adapted to removably hold opposite ends of the leader pin inside an opening of the cartridge casing, and a sliding door for opening and closing the opening. A recess is formed on the inner surface of the sliding door at least at a part opposed to the front end of the lock member so that the front end of the lock member is prevented from interfering with the sliding door, whereby leader pin holding action by the lock member and opening and closing of the sliding door are stabilized and reliability of the magnetic tape cartridge is improved.

Claims8

Dependent claims

A magnetic tape cartridge comprising a cartridge casing formed by upper and lower casing halves mated together, a single reel which is housed in the cartridge casing for rotation and around which a magnetic tape is wound, a leader pin which is fixed to the leading end of the magnetic tape in order to draw out the magnetic tape from the cartridge casing, a lock member which is adapted to removably hold opposite ends of the leader pin inside an opening of the cartridge casing, and a sliding door for opening and closing the opening,

wherein a coiled spring member extends through the sliding passage of the sliding door and a hole extending from the sliding passage in the direction in which the sliding door is opened along the mating surfaces of the upper and lower casing halves, and a plug is inserted into the hole to push the end of the coiled spring member remote from the sliding door so that the coiled spring urges the sliding door to its closing position.

Dependencies are inferred from the claim text.

Facts

Application: 10/335,876Filed 3 Jan 2003 · division
Priority: JP 10-17450322 Jun 1998
Published: US 2003/0102396 A15 Jun 2003
Granted: 30 Mar 2004
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G11B 23/045
Details: covers
G11B 23/041
Magazines; Cassettes for webs or filaments: details
G11B 23/107
For housing webs or filaments having two distinct ends: using one reel or core, one end of the record carrier coming out of the magazine or cassette
G11B
Information storage based on relative movement between record carrier and transducer

Family

PCT/JP99/02956Parent of this division · filed 3 Jun 1999
Application10/115,920Parent of this division · filed 5 Apr 2002
US 2003/0102396 A1Pre-grant publication · published 5 Jun 2003
US 6,533,204 B2Parent of this division
Application09/720,344Parent of this division
US 6,435,439 B1Parent of this division
US 2002/0104913 A1Published application
US 6,712,303 B2This patent

From the US filing history. Foreign family members aren’t listed.