Matsushita Electric Industrial Co., Ltd.

Makoto Okuda

Osamu Zaitsu

Seiko Minamide

Jiro Kajino

Mitsuo Utsumi

Tatsuhiro Yabuki

Isamu Inoue

Shinobu Nakata

Tadahiro Fukui

A tape cassette which includes a housing having an opening at the front portion of the housing in which opening loading posts are maneuvered, a pair of tape reels rotatably disposed in the housing, a slider slidably mounted by the housing and having a front portion located in the opening, and a front cover supported by both the slider and housing for covering the magnetic tape exposed to the outside, and shifting means for rotating the front cover in the direction in which the loading posts are entered into the opening, end sliding the front cover in such a direction that the front cover moves away from the magnetic tape so that in accordance with the movement of the slider in a direction that the front portion moves away from the magnetic tape, the magnetic tape is exposed to the outside.

Tape cassette

A tape cassette to be mounted on a magnetic recording/reproducing apparatus. A magnetic tape is extended in front of an opening formed at a front part of a housing. The housing is provided with a front cover for covering the tape. The tape is exposed by an upward rotation of the front cover. The front cover is upwardly rotated when a slider, which is slidably attached to the housing, is slid rearward with respect to the housing. The slider, which is in engagement with an engaging member, is slid by relative movement of the engaging member and the housing. The slider is locked to the housing by a locking member, which unlocks the slider when the engaging member is engaged with the slider.

Tape cassette including a locking slider

A magnetic recording/reproducing apparatus according to the present invention is constituted by a chassis on which a rotary head cylinder and a reel frame are provided; a cassette carrier for holding a tape cassette; and cassette carrier moving means for relatively moving/guiding the rotary head cylinder into the tape cassette in a state where the tape cassette is not engaged to the reel frame. The tape cassette and the reel frame are engaged to each other after the rotary head cylinder has been relatively moved/guided into the tape cassette. As a result, the depth of the apparatus can be reduced and as well as the thickness can also be reduced.

Cassette loading device for a magnetic recording/reproducing apparatus

A thermoluminescence dosimeter element including an adhesive coating formed in a predetermined thickness on a base tape, and particles of thermoluminescent material sprayed onto the surface of the adhesive coating. Such thermoluminescence dosimeter element is produced by a method including a first step of spreading into an adhesive coating of a small thickness an adhesive agent applied in drops to the surface of a base tape, a second step of spraying particles of thermoluminescent material onto the surface of the adhesive coating through one of openings formed in a masking tape operatively brought into contact with the base tape, and a third step of drying the adhesive coating to ensure that the particles of the thermoluminescent material firmly adhere to the base plate. The method enables thermoluminescence dosimeter elements of high sensitivity and reliable performance to be produced continuously on a mass production basis.

Method of producing thermoluminescence dosimeter element

An automatic thermo-luminescence desimeter, comprising a thermo-luminescence dosimeter element which is composed of a card carrying a thermo-luminescence material and contained in an encasing member; a magazine adapted to accommodate therein a plurality of the thermo-luminescence dosimeter elements; means for transporting the magazine; card feeding means for extracting a thermo-luminescence dosimeter element from the magazine and feeding the element into a longitudinal groove formed in a housing; releasing means for releasing engagement between the card and the encasing member; means for feeding the card into a transversal groove formed in the housing; heating means for heating the thermo-luminescence material carried by the card fed to the transversal groove by irradiating with infrared rays; and photoelectric converter means for converting thermo-luminescence emitted by the thermo-luminescence material into an electric signal, whereby doses of exposed radiation of the individual theremo-luminescence dosimeter elements are successively measured within a short time.

Growing community of inventors

Hirakata, Japan

Makoto Okuda