Mitsumi Electric Company Ltd.

Hewlett-Packard Company

Koichi Shimoyama

Ikuichiro Nawa

Masafumi Ishizuki

Naoki Tatsumi

Nobutaka Tsuneyoshi

Keiichi Setsumasa

Kiyotaka Aoki

Geoff Mansbridge

David Moseley

The present invention provides an optical scanning control device and a retina scanning projection device provided with a structure for suppressing heat transfer to a laser module, and a heat dissipation structure for dissipating the heat of the laser module. The optical scanning control device () is configured to emit, as image light, a laser light in accordance with an image signal. The optical scanning control device includes: a housing () made of metal; a laser module () configured to emit laser light, which abuts the top of the base () of the housing, and is arranged on one side inside the housing; a power supply unit () arranged inside the housing on a side opposite that of the laser module; and an electronic circuit board () having heat source members (IC chips) configured to cause the laser module to emit image light, the electronic circuit board being arranged on a side opposite the base-side of the laser module. The heat source members are arranged on a surface on a side of the electronic circuit board facing away from the laser module, and are at positions which avoid a position directly above the laser module.

Optical scanning control device and retina scanning projection device

A connector includes a housing and a terminal. The housing has an insertion space into which a thin insertion object is inserted. The terminal member has a supported portion supported by the housing, an elastic portion configured to be elastically deformed according to an insertion of the thin insertion object into the insertion space, and a terminal portion to be soldered to a board. The terminal portion is extended from the supported portion in a direction different form an extending direction of the elastic portion. The terminal member is configured to detect an insertion state of the thin insertion object based on a change of conduction by the elastic deformation of the elastic portion A sectional area reducing part is provided in the terminal member between the supported portion and the terminal portion. The sectional area reducing part has a sectional area smaller than a sectional area at the terminal portion.

Thin connector

A tape recording and reproduction apparatus includes a post base with a tape guide post, a leaf spring member pressing the post base against a post base catcher, and a leaf spring member control part. The leaf spring member control part presses the leaf spring member so that a gap is formed between the post base catcher and the leaf spring member, and removes the press on the leaf spring member so that the leaf spring member presses the post base against the post base catcher. The leaf spring member control part presses the leaf spring member so as to form the gap when the post base moves to the side of the post base catcher opposing the leaf spring member. The leaf spring member control part removes the press on the leaf spring member when the post base enters the gap.

Tape recording and reproduction apparatus capable of stable operation with reduced wear

A magnetic recording and reproduction apparatus includes a tape loading mechanism including a driving ring gear member, first and second ring gear members for shifting first and second tape guide posts, respectively, and first, second, and third gear members engaging the driving ring gear member and the first and second ring gear members, respectively. Each of the first through third gear members includes a gear part and a cam part in the same plane. The cam part of the first gear member has an arcuate shape. The cam part of the second gear member engages the cam part of the third gear member so as to transmit rotation during the operation of the tape loading mechanism, and is pressed against the circumferential surface of the arcuate cam part of the first gear member in a state where the operation of the tape loading mechanism is completed.

Magnetic recording and reproduction apparatus including gear mechanism

A mount which is fixed to a retaining board is provided with a mounting surface on which a mechanism component consisting of a link mechanism and a solenoid is mounted; a first support leg having a vertical portion downwardly folded along one edge of the mounting surface and a horizontal attachment portion which is horizontally folded along the lower end of the vertical portion and is fixed to the retaining board with a screw; and a second support leg having a vertical portion downwardly folded along the other edge of the mounting surface and a holding edge which partially extends from a lower edge of the vertical portion and is horizontally folded.

Mounting structure for mechanism element

There is provided a magnetic recording/reproducing apparatus using a plastic chassis having side walls integrally formed with a bottom plate. A cassette holder holding the cassette case moves between a loaded position and an ejected position. A pair of pins are protrudingly provided on side surfaces of the cassette holder. One pin of the pair of pins is provided on a left side surface, and the other pin is provided on a right side surface. The plastic chassis has a bottom plate and left and right side walls formed perpendicularly on the left side and the right side of the bottom plate. The bottom plate and the left and right side walls are integrally formed with each other. A pair of slots are formed on the left and right side walls, one slot of the pair of slots being formed on the left side wall, the other slot being formed on the right side wall. The cassette holder is movably supported by the pins being inserted into the respective slots between the left side wall and the right side wall. A movement of the cassette holder is guided by the slots in extending directions of the slots.

Magnetic recording/reproducing apparatus having a plastic chassis in

A tape cassette loading apparatus includes: a cassette holder which moves a tape cassette to a loaded position when the tape cassette is inserted to move the cassette holder; a lid opener, including a rotatable portion, which opens a lid of the tape cassette when the tape cassette is inserted to bring the lid into contact with the rotatable portion of the lid opener; a cam slider which locks the cassette holder to a chassis when the tape cassette is not inserted; a first protecting unit which cancels the locking of the cassette holder to the chassis by moving the cam slider when the first protecting unit is rotated by the lid of the tape cassette; and a second protecting unit which includes a first portion connected to the first protecting unit and a second portion connected to the chassis. In the apparatus, when the tape cassette is inserted and the first protecting unit is rotated by the lid of the inserted tape cassette, the second protecting unit is rotated by the first protecting unit through the first portion to cancel the connection of the second portion to the chassis. When the tape cassette is not inserted, the connection of the second portion to the chassis is maintained.

Tape cassette loading apparatus

A tape loading mechanism includes: a chassis having a guide groove; a loading post assembly having a loading post and a loading post base, the loading post base being movably supported on the chassis and being movable along the guide groove, the loading post being supported on the loading post base and loading a tape onto a tape path of a rotating drum when the loading post base is moved to a loading end position; a projecting portion, projecting from an end of the loading post base in a direction of the movement of the loading post base, which is brought into contact with a drum base of the rotating drum when the loading post base is moved to the loading end position; and a stopper portion, provided within the drum base, for catching the projecting portion to stop the movement of the loading post base at the loading end position.

Tape loading mechanism with reduced height

A plastic chassis is provided in which a shaft is fixed to the chassis even if a snap fitting integrally formed with the chassis is broken. An arm member having a claw portion is formed around a through hole formed in the chassis. A protrusion having a top surface located a predetermined distance lower than a top surface of the arm member is formed around the through hole. When the shaft is inserted into the through hole, the claw portion engages with an annular groove formed near the end of the shaft so as to fix the shaft to the chassis. When the arm member is broken, a slit washer is engaged with the annular groove so as to fix the shaft to the chassis. The slit washer is disposed on the top surface of the protrusion.

Growing community of inventors

Tokyo, Japan

Koichi Shimoyama