公开(公告)号：JPS641181A

公开(公告)日：1989-01-05

申请号：JP12878588

申请日：1988-05-26

Applicant: SONY CORP

Inventor： OTA TERUO ,  KOYAMA MASARU

IPC: G11B23/087

Abstract: PURPOSE:To prevent the deviation between both right and left ends of a tape guide block and vibrations by providing plural projections which guide a tape to a guide block and a projection cylinder part which forms a positioning hole, and boring a hole which receives the projection cylinder part of the guide block in a cassette housing. CONSTITUTION:The tape guide block 11 is provided with projection cylinder parts 17a and 17b which constitute positioning holes 7a and 7b and the cassette housing 1 is provided with fixation holes 18a and 18b. The projection cylinder parts 17a and 17b are fitted into the fixation holes 18a and 18b to suppress the vibration and deviation between both right and left ends of the tape guide block 11, and a pole for positioning is inserted from a player side to maintain positioning accuracy and determine the relative position between the player side and tape cassette. Then tape guide projections 11b-11g are directed in parallel to the magnetic head of the player side.

公开(公告)号：JPS60179976A

公开(公告)日：1985-09-13

申请号：JP3485684

申请日：1984-02-25

Applicant: SONY CORP

Inventor： KIKUCHI SHIYUUICHI ,  KATOU SHINICHIROU ,  OOTSUKI MASAHIRO ,  KOYAMA MASARU ,  ITABASHI MASAYUKI

IPC: G11B23/087

Abstract: PURPOSE:To prevent the winding disturbance of a tape at the outer circumferential part of a tape winding matter by fixing with contraction both end parts of an elastic belt-shaped film in its lengthwise direction into a distance shorter than the total length of both ends so that these end parts are swelled toward the tape winding matter. CONSTITUTION:In an REW mode a supply reel 2 is revolved toward an arrow head C and a magnetic tape 4 is rewound round the outer circumference of the reel 2. Thus the winding diameter of the reel 2 is gradually increased. A belt- shaped film 11 is put into a cassette housing 1 to oppose to the outer circumference of a tape winding matter 4a so that the tip part 14a of a swell 14 is pressed elastically to the outer circumference of the matter 4a. This prevents the loose winding of the tape 4 and then prevents the winding disturbance of the tape 4 produced at its outer circumference layer part 4a'.