Fuji Photo Film Company, Limited

Seiji Kiuchi

Masaaki Sakaguchi

Hiroshi Chikamasa

Kengo Oishi

Osamu Suzuki

Masao Tsuruta

Mitsunobu Usui

Keisuke Wakatsuki

Shinichi Satoh

Akira Honjyoh

Shoji Imai

A magnetic tape winding method and apparatus in which a magnetic field is applied to a magnetic tape during winding on a reel to even up the edges of the wound tape. After winding, the magnetic tape is demagnetized.

Method and device for winding magnetic tape using magnetic alignment

A miniature video magnetic tape cassette which is easy to assemble. An opening is formed in a front part of a cassette body which is covered by a guard panel, with the guard panel being swingably supported on the cassette body by shafts protruding from an inner surface of the side walls of the guard panel fitted into openings in the cassette body. A coil spring is supported on each supporting shaft with one end of each spring engaged with the guard panel to urge the guard panel toward the closed position of the opening. The other end of each coil spring is held by a locking structure provided on an inner surface adjacent to side wall of the upper half of the cassette body. The locking structure may be a locking shaft with the other end of the coil spring engaged with the locking shaft. Otherwise, the locking structure can be formed by a gap between the side wall of the upper half of the cassette and a supporting side wall inwardly thereof, in which case the other end of the coil spring is inserted into the gap and fixedly held therein with a block fitted in the gap.

Lid spring locking structure in a magnetic tape cassette

A tape winding apparatus for a magnetic tape in which a permanent magnet apples a magnet field to the magnetic tape as it is being wound on a take-up reel. The permanent magnet is of the rare earth type being made of such materials as Sm-Co or Nd-Fe-B of annular form, small in size, coaxial to the wound tape and adjacent to the side thereof, and of high field intensity.

Device for winding magnetic tape using magnetic alignment

A method and apparatus for repairing a defective portion of tape wound onto a tape cassette. The tape is pulled out of the cassette and held by a stationary and movable table such that the defective portion is on the part held by the stationary table. The tape is cut between the tables. A second movable table holding an end of a disposal tape replaces the first movable table and the disposal tape is spliced to the tape with the defect. The defect is wound toward the disposal reel and then cut. The good remaining tape pieces on the stationary and first movable tables are then spliced together.

Tape defect eliminating method and apparatus

A magnetic tape winding apparatus including a magnetic tape winding unit and an arranging unit wherein a group of operations of connecting, winding and cutting a magnetic tape supplied from a magnetic tape supplying source (roll stock) and a group of operations of cutting a leader tape fastened to a pair of reels and connecting the leader tape of each reel to the magnetic tape are carried out in a parallel mode to greatly decrease the time required for completing winding operations.

Magnetic tape winding apparatus

A feed table and a receiving table respectively having top surfaces which are flush with each other are positioned spaced from each other by a very small distance. A magnetic recording tape is fed along the top surface of the feed table toward the receiving table to extend over the top surface of the receiving table across the space between the tables, and is fixed to the top surfaces of the tables. A cutting edge is inserted into the space between the tables to cut the recording tape. A leader tape is fed along the top surface of the feed table toward the receiving table to extend over the top surface of the receiving table across the space between the tables by a predetermined length, and is fixed to the top surfaces of the tables. Then the cutting edge is inserted into the space to sever a leader tape piece having a predetermined length from the leader tape. The receiving table is moved with respect to the feed table in the lateral direction of the tapes so that the leader tape piece held on the receiving table is aligned with the part of the recording tape held on the feed table. Further the receiving table is moved in the longitudinal direction of the tapes to adjust the space between the opposed ends of the leader tape piece and the recording tape to an optimal value, and subsequently a splicing tape piece is applied to the opposed end portions of the leader tape piece and the recording tape.

Method of splicing a magnetic recording tape and a leader tape

A method of winding a predetermined length of magnetic recording tape from a large reel (on which the tape is initially wound), onto a small reel, in which the running speed of the tape is gradually increased at the beginning stage of each winding cycle to a predetermined high speed, is subsequently kept at the high speed, and is gradually slowed down near the end of the cycle, and then the tape is finally stopped to end the cycle. Simultaneously with the beginning of each winding cycle, an encoder begins to generate a pulse train, the number of pulses of which is in proportion to the number of rotations of the small reel. The number of pulses in the pulse train is counted and the tape running speed is gradually slowed down when the number of pulses counted reaches a predetermined value according to the time at which the tape running speed is to be gradually slowed down.

Method of winding magnetic recording tape

A tape splicing apparatus in which two tapes are quickly joined with no air bubbles entrapped by splicing tape. A drum body holds splicing tape by suction pressure applied through holes and the peripheral surface of the drum. The splicing tape is cut into segments of predetermined length upon the drum surface. The drum is then lowered to the splicing position upon stationary and movable receiving stands to press the sticky side of the tape segment against the abutting tape joint. A movable roller presses the splicing tape segment, which was initially attached along only a single line, in forward then rearward directions from the center of the joint so that no air can be entrapped under the splicing tape.

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Kanagawa, Japan

Seiji Kiuchi