US Patent No: 5,519,464

Number of patents in Portfolio can not be more than 2000

Magnetics-on-film image area recording head with film flattening emulsion side support

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Importance

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Abstract

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Magnetic recording and/or reproducing heads particularly for use for recording and reading information on a magnetics-on-film (MOF) layer in the image area of photographic filmstrips exhibiting a cross-film curvature in cameras or other filmstrip handling apparatus. A magnetic record/reproduce multi-head array is formed of a plurality of magnetic head elements mounted to extend across the width of the filmstrip and across the filmstrip image frame area, each head element contacting the magnetic layer at a predetermined cross-film position in a film transport path. The surfaces of the head elements aligned to contact the filmstrip magnetic layer are burnished or lapped by an abrasive tape lapping of the head as a final contouring operation on the head to remove all edges that can scrape or scratch the magnetic surface of the filmstrip. An elongated, compliant backing support, e.g. a free wheeling roller, pad or brush, having a low friction contact surface, is positioned to bear against the filmstrip emulsion layer opposite to the multi-head array. Light pressure is applied through the backing support to conform the filmstrip magnetic layer to the magnetic head elements in the cross-film and film advance directions.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
EASTMAN KODAK COMPANYROCHESTER, NY16425

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brock, George W La Jolla, CA 30 323
Czarnecki, Wlodzimierz S Rancho Santa Fe, CA 8 80
Gandola, Kent R Carlsbad, CA 7 40

Cited Art Landscape

Patent Info (Count) # Cites Year
 
EASTMAN KODAK COMPANY (12)
4,933,780 Camera apparatus for magnetically recording on film 33 1988
4,977,419 Self-clocking encoding/decoding film information exchange system using dedicated magnetic tracks on film 89 1988
5,034,836 Magnetic head suspension apparatus for use with a photographic film 29 1989
5,041,933 Magnetic head suspension apparatus for use with a photographic film 18 1989
5,006,873 Implicit mid roll interrupt protection code for camera using dedicated magnetic tracks on film 36 1989
5,025,283 Magnetic recording on film of scene parameters and photofinishing process for use therewith 23 1990
5,285,324 Magnetic head-to-recording medium support apparatus 16 1991
5,276,472 Photographic film still camera system with audio recording 84 1991
5,231,438 Camera with interlock for cover piece and cartridge light shield 62 1991
5,274,522 Magnetic head-to-media backer device 21 1992
5,285,325 Web guiding device for use in a magnetic reading and/or recording apparatus 16 1992
5,450,149 Photographic camera and method for recording magnetic data on film 23 1994
 
FUJI PHOTO FILM CO., LTD. (4)
4,612,593 Tape pad for use in magnetic recording tape cassette 3 1982
4,910,629 Magnetic head 8 1988
5,307,100 Magnetic recording/reproducing apparatus for a camera having pressure roller 45 1993
5,344,730 Method of recording information on a photographic film 42 1993
 
CANON KABUSHIKI KAISHA (2)
5,146,378 Multi-track head 8 1991
5,321,452 Magnetic head for a camera featuring multiple, varied-sized head portions 18 1992
 
HUTCHINSON TECHNOLOGY INCORPORATED (1)
5,282,102 Gimbal for magnetic head suspension systems 37 1992
 
ROBERT BOSCH GMBH (1)
4,669,016 Thin layered magnetic head 8 1985
 
Other [Check patent profile for assignment information] (1)
4,922,361 Pressure pad, particularly for magnetic tapes 11 1988

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
EASTMAN KODAK COMPANY (5)
5,828,506 Magnetic head interface having a single narrow band of contact for longitudinal edge track record/reproduce on magnetics-on-film (MOF) 0 1996
6,233,407 Camera with magnetic roller recorder for repetitively recording information along magnetic track on filmstrip 0 1996
5,671,454 Head to film interface for photofinishing equipment 0 1996
5,749,006 Camera for recording images on a photographic film or on a magnetic tape 13 1997
6,321,040 System and method of scanning, viewing and writing information on a magnetic layer of photosensitive film 12 1998
 
NIKON CORPORATION (1)
5,815,756 Film positioning apparatus 1 1997