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Patent EP0690608A2 successfully refreshed from Google Patents.
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EP0690608A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Film scanning system and method

Assignee: International Business Machines Corp
•
Filing: 1995-06-16
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Granted: —
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Expires: 2015-06-16
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Abstract

Abstract A scanner housing encloses a rotatable cylindrical drum (28), the outer surface having opposing rims supporting respective outer edges of a film strip. The edges are releasably held flat against respective rims by means of bands (52, 54) contacting respective radially outer edges of the film to maintain them against the respective outer rim surfaces. A scanner assembly (72) is disposed internally of the housing adjacent one outer side of the drum (28). A light source (114) is located adjacent an opposing outer side of the drum (28) at a location substantially diametrically opposed from the scanner assembly (72). A focusing lens assembly (42) is disposed internally of the drum (28) between the light source (114) and the scanner assembly (72). The film being carried on the outer circumference of the rotating drum (28) as the drum rotates, passes adjacent the light source (114). Light from the source (114) thereby is directed through the film, the lens assembly (42), and impinges upon the scanner assembly (72) whereupon the portion of the film adjacent the light source is thereby scanned (172).

Inventors

  • 👤 Albert Durr Edgar
  • 👤 Steven Craig Penn

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 14:26
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/12; H04N1/121; H04N1/1215; H04N1/19; H04N1/191; H04N1/192; H04N1/193; H04N2201/00; H04N2201/04; H04N2201/0402; H04N2201/0404; H04N2201/0408

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 51 words
A method for scanning film comprising disposing said film along a curved path, a segment of said path extending between and a first and a second location; directing light from said first location through said film and said segment to said second location; and collecting said light at said second location.
Claim 2
Dependent Claim 13 words
A method as claimed in Claim 1 wherein said collecting comprises linear scanning.
Claim 3
Dependent Claim 18 words
A method as claimed in Claim 2 further including moving said film along said path during said scanning.
Claim 4
Dependent Claim 23 words
A method as claimed in Claim 3 wherein said curved path defines an arc; and wherein said first location is outside said arc.
Claim 5
Dependent Claim 19 words
A method as claimed in Claim 4 wherein said scanning is from within said arc from said second location.
Claim 6
Dependent Claim 51 words
A method as claimed in Claim 3 wherein said arc defines a radius of curvature; said film defines a scan area on a surface facing said second location; and said first and second locations and said scan area lie along a line parallel to and offset from said radius of curvature.
Claim 7
Independent Claim 24 words
A method as claimed in any Claim wherein said scanning is in a parallel direction to a line transverse to and intersecting said arc.
Claim 8
Independent Claim 14 words
A method as claimed in any Claim wherein said scan is a direct scan.
Claim 9
Dependent Claim 91 words
The method of Claim 3 wherein said arc defines a beginning point and an ending point at respective opposing ends of said arc; wherein said film defines opposing edges; and wherein step of moving comprises: urging said film at said beginning point into support along said edges; maintaining said support along said edges when said edges are moving between said beginning point and said ending point along said arc; and withdrawing said support of said edges at said end point of said arc as said film exits at said end point.
Claim 10
Dependent Claim 14 words
A method as claimed in Claim 9 wherein said support is a fixed support.
Claim 11
Independent Claim 74 words
A system for scanning film comprising: means (52, 54, 38, 40, 48, 50) for disposing said film along a curved path, a segment of said path extending between a first 64 and a second location 72; means (114, 64, 42) for directing light from said first directly location 64 through said film and said segment to said second location 72; and means (110, 111, 112) for collecting said light at said second location 72.

References Cited (Backward Citations)

US5266805A Cited

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