UST941022I4 - Apparatus for lifting tape edges above path of rotating head - Google Patents

Apparatus for lifting tape edges above path of rotating head Download PDF

Info

Publication number
UST941022I4
UST941022I4 US53540774A UST941022I4 US T941022 I4 UST941022 I4 US T941022I4 US 53540774 A US53540774 A US 53540774A US T941022 I4 UST941022 I4 US T941022I4
Authority
US
United States
Prior art keywords
tape
mandrel
head
ramps
rotating head
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
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 filed Critical
Priority to US53540774 priority Critical patent/UST941022I4/en
Priority to GB40468/75A priority patent/GB1480869A/en
Application granted granted Critical
Publication of UST941022I4 publication Critical patent/UST941022I4/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/60—Guiding record carrier
    • G11B15/61—Guiding record carrier on drum, e.g. drum containing rotating heads

Definitions

  • a rotor 11 in the longitudinal center of the mandrel carries a magnetic head 12 to transversely scan the helically wrapped tape 32.
  • Entry and exit ramps 16 and 22 on the mandrel are provided where the tape enters and exits the mandrel.
  • the function of these ramps is to lift the edge of the tape adjacent the path of the rotating head 12 as the head crosses the edges of the tape 32. This lifting by the ramps prevents the head from striking the edges of the tape and thus damaging the head and the tape.
  • Both the ramps and the mandrel are made from porous material so as to be air bearing.

Abstract

DISCLOSED HEREIN IS A MANDREL 10A AND 10B ON WHICH TAPE 22 IS HELICALLY WRAPPED 360* ABOUT THE MANDREL. A ROTOR 11 IN THE LONGITUDINAL CENTER OF THE MANDREL CARRIES A MAGNETIC HEAD 12 TO TRANSVERSELY SCAN THE HELICALLY WRAPPED TAPE 32. ENTRY AND EXIT RAMPS 16 AND 22 ON THE MANDREL ARE PROVIDED WHERE THE TAPE ENTERS AND EXITS THE MANDREL. THE FUNCTION OF THESE RAMPS IS TO LIFT THE EDGE OF THE TAPE ADJACENT THE PATH OF THE ROTATING HEAD 12 AS THE HEAD CROSSES THE EDGES OF THE TAPE 32. THIS LIFTING BY THE RAMPS PREVENTS THE HEAD FROM STRIKING THE EDGES OF THE TAPE AND THUS DAMAGING THE HEAD AND THE TAPE. BOTH THE RAMPS AND THE MANDREL ARE MADE FROM POROUS MATERIAL SO AS TO BE AIR BEARING.

Description

DEFENSIVE PUBLICATIQN UNITED STATES PATENT AND TRADEMARK OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 O.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and arearranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.
Defensive Publication app1ications.have not been examined as to the merits of alleged invention. The Patent and Trademark Otfice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED DECEMBER 2, 1975 T941,022 APPARATUS FOR LIFTING TAPE EDGES ABOVE PATH OF ROTA'ITNG HEAD Frederic F. Freeman, Boulder County, and Ernest P. Kollar, Weld County, Colo., assignors to International Business Machines Corporation, Armonk, N.Y.
Filed Dec. 23, 1974, Ser. No. 535,407 Int. Cl. Gllb 15/60 U.S. Cl. 360-130 2 Sheets Drawing. 6 Pages Specification Disclosed herein is a mandrel 10A and 10B on which tape 32 is helically wrapped 360 about the mandrel. A rotor 11 in the longitudinal center of the mandrel carries a magnetic head 12 to transversely scan the helically wrapped tape 32. Entry and exit ramps 16 and 22 on the mandrel are provided where the tape enters and exits the mandrel. The function of these ramps is to lift the edge of the tape adjacent the path of the rotating head 12 as the head crosses the edges of the tape 32. This lifting by the ramps prevents the head from striking the edges of the tape and thus damaging the head and the tape. Both the ramps and the mandrel are made from porous material so as to be air bearing.
Dec. 2, 1975 F. R. FREEMAN et a1. T941,022
APPARATUS F LIFTING TAPE EDGES ABOVE PAT F ROTATING HEAD Original Filed Dec. 23, 1974 Sheet 1 of 2 Dec. 2, 1975 F. R. FREEMAN et a1. APPARATUS FOR LIFTING TAPE EDGES ABOVE PATH OF ROTATING HEAD Original Filed Dec. 23, 1974 FIG. 3
Sheet 2 of 2
US53540774 1974-12-23 1974-12-23 Apparatus for lifting tape edges above path of rotating head Pending UST941022I4 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US53540774 UST941022I4 (en) 1974-12-23 1974-12-23 Apparatus for lifting tape edges above path of rotating head
GB40468/75A GB1480869A (en) 1974-12-23 1975-10-03 Rotary magnetic head apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US53540774 UST941022I4 (en) 1974-12-23 1974-12-23 Apparatus for lifting tape edges above path of rotating head

Publications (1)

Publication Number Publication Date
UST941022I4 true UST941022I4 (en) 1975-12-02

Family

ID=24134052

Family Applications (1)

Application Number Title Priority Date Filing Date
US53540774 Pending UST941022I4 (en) 1974-12-23 1974-12-23 Apparatus for lifting tape edges above path of rotating head

Country Status (2)

Country Link
US (1) UST941022I4 (en)
GB (1) GB1480869A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0069499A1 (en) * 1981-07-03 1983-01-12 Sony Corporation Rotary magnetic head drum apparatus
US5212613A (en) * 1990-12-29 1993-05-18 Samsung Electronics Co., Ltd. Rotary head drum
US5502607A (en) * 1987-11-02 1996-03-26 Canon Kabushiki Kaisha Recording or reproducing apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6055900B2 (en) * 1978-03-06 1985-12-07 ソニー株式会社 Recording/playback device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0069499A1 (en) * 1981-07-03 1983-01-12 Sony Corporation Rotary magnetic head drum apparatus
US5502607A (en) * 1987-11-02 1996-03-26 Canon Kabushiki Kaisha Recording or reproducing apparatus
US5212613A (en) * 1990-12-29 1993-05-18 Samsung Electronics Co., Ltd. Rotary head drum

Also Published As

Publication number Publication date
GB1480869A (en) 1977-07-27

Similar Documents

Publication Publication Date Title
ES452647A1 (en) Procedure for the obtaining of a photosensible copy material. (Machine-translation by Google Translate, not legally binding)
AT351820B (en) METHOD FOR PRODUCING AN INFORMATION STORAGE DESCRIBED WITH INFORMATION AND INFORMATION STORAGE
SE7608968L (en) DEVICE FOR STORAGE AND READING AUTHENTIC INFORMATION
GB1385533A (en) Laser recording method
SE415938B (en) METHOD AND DEVICE FOR COPYING DOCUMENTS
GB666653A (en) Improvements in or relating to methods of duplicating magnetic recordings, the elongated magnetic record members resulting from said method and apparatus for duplicating magnetic recordings from a master tape
UST941022I4 (en) Apparatus for lifting tape edges above path of rotating head
ES8105109A1 (en) Tape recording or reproducing apparatus with rotating magnetic head.
DK54876A (en) PROCEDURE FOR REPAIRING OR RENOVATING WORN OR DAMAGED DRIVE SHAFTS OR OTHER MACHINE ELEMENTS
ATA575778A (en) METHOD FOR PRODUCING AN EXTRA HARD MATERIAL
IT1049680B (en) APPARATUS FOR MAGNETIC RECORDING AND REPRODUCTION
FI51002C (en) Method and apparatus for impregnating carbon fiber strings and tapes.
AU461920B2 (en) Method and apparatus for recording intelligence ona sheet material
SE7505385L (en) METHODS AND APPARATUS FOR IONIZATION OF PARTICULARS OF ONE ISOTOPE TYPE IN AN ENVIRONMENT OF PARTICULARS OF SEVERAL ISOTOPE TYPES.
NL7509380A (en) TEST TAPE AND TEST METHOD FOR A MAGNETIC RECORDING DEVICE WITH SCREW-LINE-SHAPED SCANNING.
SE7613608L (en) PROCEDURE AND APPARATUS FOR TEMPERATING MELTORS OR THERMOPLASTIC SOLUTIONS
NL7512181A (en) MAGNETIC RECORDING MEDIUM AND METHOD FOR ITS MANUFACTURE.
AT342884B (en) LAMINATED MATERIAL FOR MAGNETIC RECORDING AND REPLAY HEADS AND THE PROCESS FOR THEIR PRODUCTION
SE404249B (en) PROCEDURE AND APPARATUS FOR DRYING FIBER MATERIAL
ES403581A1 (en) Amplification of photographic images
SE381338B (en) PROCEDURE FOR INVESTING AN INFLATABLE DECK AND EXAMINATION APPARATUS FOR PERFORMING THE PROCEDURE
FI52600C (en) Method and apparatus for handling fibrous material.
FR2321995A1 (en) PUNCHING MACHINE FOR SHEET MATERIAL, SUCH AS HIGH DENSITY POLYETHYLENE
FR2308128A1 (en) Intensifying screens for X-ray films - with surface layer of protruding particles of PTFE etc. to avoid frictional damage
JPS5243409A (en) Scanner drive unit of recording and reproducing device