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
Stats
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May 21, 1996
Issued date -
Nov 30, 1994
filing date -
08/346,995
serial no -
Expired
status
Importance
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Abstract
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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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 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 | 86 | 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 | 21 | 1990 | |
| 5,285,324 Magnetic head-to-recording medium support apparatus | 16 | 1991 | |
| 5,276,472 Photographic film still camera system with audio recording | 72 | 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 | |
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| 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 | |
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| 5,146,378 Multi-track head | 8 | 1991 | |
| 5,321,452 Magnetic head for a camera featuring multiple, varied-sized head portions | 18 | 1992 | |
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| 5,282,102 Gimbal for magnetic head suspension systems | 37 | 1992 | |
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| 4,669,016 Thin layered magnetic head | 8 | 1985 | |
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| 4,922,361 Pressure pad, particularly for magnetic tapes | 11 | 1988 | |