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US3853400A Expired / Lapsed US ⏱️ 0.0 years remaining

Liquid applicator for a photographic printer

Assignee: Bell and Howell Co
•
Filing: 1973-06-06
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Granted: 1974-12-10
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Expires: 1993-06-06
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Abstract

Abstract There is disclosed an improved liquid applicator for use in a conventional photographic printer wherein the liquid applicator applies liquid to the surface of a film having an image thereon by utilizing a roller means slightly spaced from the film surface which rotates through a portion of a liquid supply whereby the roller means is wetted by the liquid supply and continues to rotate, thereby transferring the liquid onto the film surface. By varying the speed of the roller means, the amount of liquid placed on the surface of the film can be regulated regardless of the speed at which the film passes through the liquid applicator.

Inventors

  • 👤 H Hosaka

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 04:58
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/04; G03B27/08

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 326 words
In a photographic film printer having a printing axis and having means for moving a first image bearing film and a second photosensitive film through respective first and second film paths, for coating the first and second surfaces of said first film with a liquid and for guiding said first and second films across said printing axis thereby exposing said image from said first film onto said second film, the improvement comprising: a liquid applicator means through which said first film path traverses, said liquid applicator means including a first liquid supply means and a second liquid supply means, a first roller means adjacent to said first film path and to said first liquid supply means wherein said first roller means rotaTes through at least a portion of said liquid in said first liquid supply means and wherein said first roller means transfers said liquid to said first surface of said first film and a second roller means adjacent to said first film path and to said second liquid supply means wherein said second roller means rotates through at least a portion of said liquid in said second liquid supply means and wherein said second roller means transfers said liquid to said second surface of said first film, and means for selectively varying the speed of rotation of said first and said second roller means whereby a preselectable quantity of liquid is applied to the surfaces of said film regardless of the speed of which said film passes through said liquid applicator means; a printing means adjacent to said liquid applicator means through which said printing axis traverses and through which said first and second film paths traverse, wherein said first and second film paths traverse said printing axis whereby said image on said first film is exposed onto said second film; and a drying means adjacent to said printing means through which said first film path traverses wherein said drying means dries said first film.
Claim 2
Dependent Claim 326 words
In a photographic film printer having a printing axis and having means for moving a first image bearing film and a second photosensitive film through respective first and second film paths, for coating the first and second surfaces of said first film with a liquid and for guiding said first and second films across said printing axis thereby exposing said image from said first film onto said second film, the improvement comprising: a liquid applicator means through which said first film path traverses, said liquid applicator means including a first liquid supply means and a second liquid supply means, a first roller means adjacent to said first film path and to said first liquid supply means wherein said first roller means rotaTes through at least a portion of said liquid in said first liquid supply means and wherein said first roller means transfers said liquid to said first surface of said first film and a second roller means adjacent to said first film path and to said second liquid supply means wherein said second roller means rotates through at least a portion of said liquid in said second liquid supply means and wherein said second roller means transfers said liquid to said second surface of said first film, and means for selectively varying the speed of rotation of said first and said second roller means whereby a preselectable quantity of liquid is applied to the surfaces of said film regardless of the speed of which said film passes through said liquid applicator means; a printing means adjacent to said liquid applicator means through which said printing axis traverses and through which said first and second film paths traverse, wherein said first and second film paths traverse said printing axis whereby said image on said first film is exposed onto said second film; and a drying means adjacent to said printing means through which said first film path traverses wherein said drying means dries said first film.
Claim 3
Dependent Claim 91 words
The improvement of claim 1 wherein said liquid applicator means further comprises a first guide means adjacent to said first roller means and a second guide means adjacent to said second roller means wherein said first film path traverses between said first roller means and said first guide means and between said second roller means and said second guide means whereby said first and second guide means ensure that said first and second surfaces of said film are evenly coated by said liquid from said respective first and second roller means.
Claim 4
Dependent Claim 25 words
The improvement of claim 2, wherein said liquid applicator means further comprises a means for introducing liquid into said first and second liquid supply means.
Claim 5
Dependent Claim 37 words
The improvement of claim 3 further comprising a means for adjusting the level of said liquid in said first and second liquid supply means with respect to the position of said first and second roller means, respectively.
Claim 6
Dependent Claim 17 words
The improvement of claim 2 wherein said first and second guide means each comprise a roller means.
Claim 7
Dependent Claim 20 words
The improvement of claim 1 wherein said first and second film paths are parallel as they traverse said printing axis.
Claim 8
Dependent Claim 13 words
The improvement of claim 1 wherein said printing means comprises an optical printer.
Claim 9
Dependent Claim 152 words
The improvement of claim 7 wherein said liquid applicator means further comprises: a third roller means adjacent to said first roller means wherein said first film path traverses between said first and third roller means and wherein said third roller means ensures that said first surface of said first film is evenly coated by said liquid from said first roller means; a fourth roller means adjacent to said second roller means wherein said first film path traverses between said second and fourth roller means and wherein said fourth roller means ensures that said second surface of said film evenly coated by said liquid from said second roller means; a means for introducing liquid into said first and second liquid supply means; and a means for adjusting the levels of said liquid in said first and second liquid supply means with respect to the position of said first and second roller means, respectively.
Claim 10
Dependent Claim 27 words
The improvement of claim 1 wherein one of said surfaces of said first film contacts the surface of said second film as they traverse said printing axis.
Claim 11
Dependent Claim 49 words
The improvement of claim 8 wherein the position of said third roller means in relation to said first roller means and said fourth roller means in relation to said second roller means may be changed so as to vary the amount of said liquid being transferred to said film.
Claim 12
Dependent Claim 49 words
The improvement of claim 8 wherein the position of said third roller means in relation to said first roller means and said fourth roller means in relation to said second roller means May be changed so as to vary the amount of said liquid being transferred to said film.

References Cited (Backward Citations)

US2695591A Cited
US3145637A Cited
US3554641A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-12-09 1978-06-10 1978-12-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-12-09 1982-06-10 1982-12-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-12-09 1986-06-10 1986-12-10 $7700.00 Window Closed / Lapsed

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