JPS55129960A - Rotary drum unit of magnetic recording and reproducing device - Google Patents

Rotary drum unit of magnetic recording and reproducing device

Info

Publication number
JPS55129960A
JPS55129960A JP3469179A JP3469179A JPS55129960A JP S55129960 A JPS55129960 A JP S55129960A JP 3469179 A JP3469179 A JP 3469179A JP 3469179 A JP3469179 A JP 3469179A JP S55129960 A JPS55129960 A JP S55129960A
Authority
JP
Japan
Prior art keywords
drum
rotary drum
tape
grooves
outside circumference
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3469179A
Other languages
Japanese (ja)
Inventor
Etsuro Saito
Mitsuo Kakinuma
Ryutaro Ogawa
Koji Hishinuma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP3469179A priority Critical patent/JPS55129960A/en
Publication of JPS55129960A publication Critical patent/JPS55129960A/en
Pending legal-status Critical Current

Links

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE: To obtain tape running where contact pressure is uniform throughout all the circumference of a rotary drum, by providing a groove inclined for the rotation direction on the rotary drum outside circumference face of a full-rotation rotary drum unit.
CONSTITUTION: Through-hole 4 to which the tip of magnetic head 2 of a rotary magnetic head unit faces is provided in the center of outside circumference face 3 of rotary drum 1. Durm 1 is rotated and driven in the arrow A direction together with the magnetic head unit, and magnetic tape 5 is wound on the outside circumference through approximately 360° into an α form and runs in the arrow A direction and the arrow B direction. Plural grooves 12 extending from lower edge 11 to the part slightly lower than the center position, where through-hole 4 is provided, are provided on outside circumference face 3 of drum 1, and these grooves are a spiral form inclined to the rotation direction of the drum. Magnetic tape 5 wound into an α form runs while sliding on grooves 12 near the leaving side from drum 1, and air enters into grooves 12 due to rotation of drum 1, so that tape 5 can be prevented from being stuck to drum 1 by a formed air film layer, and contact pressure of tape 5 may be uniform.
COPYRIGHT: (C)1980,JPO&Japio
JP3469179A 1979-03-24 1979-03-24 Rotary drum unit of magnetic recording and reproducing device Pending JPS55129960A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3469179A JPS55129960A (en) 1979-03-24 1979-03-24 Rotary drum unit of magnetic recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3469179A JPS55129960A (en) 1979-03-24 1979-03-24 Rotary drum unit of magnetic recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS55129960A true JPS55129960A (en) 1980-10-08

Family

ID=12421399

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3469179A Pending JPS55129960A (en) 1979-03-24 1979-03-24 Rotary drum unit of magnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS55129960A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03259447A (en) * 1990-03-08 1991-11-19 Sony Corp Recording and reproducing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03259447A (en) * 1990-03-08 1991-11-19 Sony Corp Recording and reproducing device

Similar Documents

Publication Publication Date Title
JPS52134410A (en) Rotary head tape magnetic record/reproduce device
JPS5593530A (en) Magnetic head unit
JPS57189325A (en) Composite magnetic head
JPS52145013A (en) Magnetic disk device
GB1422072A (en) Tape guide assembly for tape recording and/or reproducing apparatus
JPS53123906A (en) Magnetic disc
SE8202258L (en) Magnetic recording and reproducing device tape loading appts. - has rotary guides which project perpendicularly from loading ring
JPS55129960A (en) Rotary drum unit of magnetic recording and reproducing device
JPS5258903A (en) Magnetic record/reproduction unit
JPS54145426A (en) Magnetic recording reproducer
JPS5641551A (en) Tape driving unit of cassette tape recorder
JPS5834606Y2 (en) magnetic recording and reproducing device
JPS57198569A (en) Rotary head drum for magnetic picture recording and reproducing
JPS55113120A (en) Erasing magnetic head
JPS5238906A (en) Tape guide device
JPS57130206A (en) Magnetic recording system
JPS5220808A (en) Reproducing apparatus for magnetic recording
JPS51135614A (en) Rotary head magnetic recording device
JPS5290907A (en) Rotary head magnetic recording device
JPS5225604A (en) Tape running control device
JPS55132559A (en) Magnetic recording and reproduction unit
JPS5677A (en) Tape recorder
JPS52115206A (en) Tape recorder
JPS5250213A (en) Magnetic recorder and reproducer
JPS5290906A (en) Rotary head magnetic recording device