US3771868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing and checking a photographic cut which is to be transferred to a sensitized printing cylinder, and means for applying this process
Assignee: Individual
•
Filing: 1971-04-28
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Granted: 1973-11-13
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Expires: 1991-04-28
Abstract
Abstract A process for the preparation and checking of a photographic cut which is to be transferred to a printing cylinder consisting in simultaneously projecting on a screen with the aid of a pair of projectors disposed in a plane perpendicular to said cut, a point on the upper edge and a corresponding point on the lower edge of said cut, merging the images of these two points and moving the pair of projectors parallel to the cut in such a way as to project, successively, all points on the upper and lower edges of the cut and an apparatus for carrying out this process.
Inventors
- 👤 R Bassereau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:21
CPC Classifications
G; G03; G03F; G03F9/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
210 words
A method for preparing and checking a photographic cut with a transparent border, designed to be transferred to a printing cylinder, consisting in, simultaneously projecting on a screen, with the aid of two similar projectors, a point on the upper edge of the cut and the corresponding point on the lower edge of the cut, causing the images of these two projected points to coincide on said screen, displacing said two projectors parallel to the cut to project, successively, all points on the upper and lower edges of the cut, manually retouching the cut to correct the same and thus the total image obtained on the screen of the cut if the image shows discontinuities, next fixing masks along the lower and upper edges of the cut so that the images on the screen of the edges of the masks will be merged, manually retouching the cut to correct the total image when said image again shows discontinuities, providing lines on said transparent border surrounding the cut which are the prolongations of the edges of the masks, and projecting said lines on said screen to determine if the images of these two lines are merged, and are in the prolongation of the image of said two edges of the masks.
Claim 2
Independent Claim
210 words
A method for preparing and checking a photographic cut with a transparent border, designed to be transferred to a printing cylinder, consisting in, simultaneously projecting on a screen, with the aid of two similar projectors, a point on the upper edge of the cut and the corresponding point on the lower edge of the cut, causing the images of these two projected points to coincide on said screen, displacing said two projectors parallel to the cut to project, successively, all points on the upper and lower edges of the cut, manually retouching the cut to correct the same and thus the total image obtained on the screen of the cut if the image shows discontinuities, next fixing masks along the lower and upper edges of the cut so that the images on the screen of the edges of the masks will be merged, manually retouching the cut to correct the total image when said image again shows discontinuities, providing lines on said transparent border surrounding the cut which are the prolongations of the edges of the masks, and projecting said lines on said screen to determine if the images of these two lines are merged, and are in the prolongation of the image of said two edges of the masks.
Claim 3
Independent Claim
101 words
A device for preparing and checking a photographic cut designed to be transferred to a printing cylinder comprising, in combination, a glass on which the cut to be checked and prepared can be detachably mounted, a frame supporting said glass vertically and having at least two parallel sides, connected slides slideably mounted on said two parallel sides of said frame, a pair of projectors each adjustably connected to one of said slides, means carried by said slides for adjusting the position of said projectors relative to said glass and means on said frame for adjusting the position of said glass thereon.
Claim 4
Independent Claim
101 words
A device for preparing and checking a photographic cut designed to be transferred to a printing cylinder comprising, in combination, a glass on which the cut to be checked and prepared can be detachably mounted, a frame supporting said glass vertically and having at least two parallel sides, connected slides slideably mounted on said two parallel sides of said frame, a pair of projectors each adjustably connected to one of said slides, means carried by said slides for adjusting the position of said projectors relative to said glass and means on said frame for adjusting the position of said glass thereon.
Claim 5
Dependent Claim
82 words
In a device according to claim 2, wherein said slides includes sleeves each slideable mounted on a different one of said two parallel sides of the frame, at least one cross-brace, disposed perpendicular to said frame sides and connecting said sleeves and two slides slideably mounted on said cross-brace, and each slide supporting a light source of one of said projectors on one side of said glass, and a lens of one of said pRojectors on the other side of said glass.
Claim 6
Dependent Claim
61 words
In a device according to claim 3, wherein said slides also includes U-shaped pieces each integral with a corresponding one of said sleeves, the branches of said U-shaped piece extending on both sides of said glass and supporting one of said light sources on one side of said glass, and one of said lens on the other side of said glass.
Claim 7
Dependent Claim
15 words
In a device according to claim 4, wherein said sleeves are disposed behind said glass.
Claim 8
Dependent Claim
50 words
In a device according to claim 4 wherein said projector adjusting means includes platens each integral with the corresponding end of one of said U-shaped pieces on which a projector is mounted, and means to articulate said platens along an axis parallel to the direction of displacement of said slides.
Claim 9
Dependent Claim
53 words
In a device according to claim 6, including a threaded pin on each slide, a spring on each pin, a tab on each platen, said tab having an oblong opening with said pin extending therethrough, and an adjusting nut on said pin for compressing said spring and vary the inclination of said platen.
Claim 10
Dependent Claim
67 words
In a device according to claim 2, including uprights on said frame cross-pieces supporting the upper and lower edges of said glass, oblong openings in said uprights of said frame with the ends of said cross-pieces therein, and said glass adjusting means comprising two screws in threaded engagement with one of said frame parallel sides with the heads of said screws supporting the lower of said cross-pieces.
References Cited (Backward Citations)
US2825142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |