US3685420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer apparatus
Assignee: Individual
•
Filing: 1969-10-15
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Granted: 1972-08-22
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Expires: 1989-10-15
Abstract
Abstract An apparatus for transferring portions of a pigmented layer from a temporary transfer sheet to a permanent receiving sheet wetted with liquid wherein two platforms are arranged on the same side of a set of rotatably driven pressure rollers, the lower platform receiving the permanent sheet and being of a size at least substantially coextensive therewith, the lower platform being inclined downwardly away from the pressure rollers with a tray located along and below its lower-most edge and having its surface equipped with a multiplicity of protuberances so that surplus wetting liquid on the permanent sheet may flow by gravity therefrom into the tray, the upper platform being inclined upwardly from the pressure rollers for receiving the temporary sheet, the two platforms having their adjacent edges proximate the nip of the pressure rollers and to one another so that the adjacent ends of the sheet can be introduced into the nip of such rollers after the sheets are oriented on their respective platforms.
Inventors
- 👤 Emile Frans Stievenart
- 👤 Omer Jan Mees
- 👤 Johan Lodewijk Verelst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:08
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/34; G03F7/343; G03D; G03D9/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
286 words
Apparatus for transferring a photo-hardenable or photosolubilizable pigmented layer from a temporary flexible transfer sheet to a liquid-wetted, flexible permanent receiving sheet which comprises a pair of cooperating pressure rollers at least as long as the maximum sheet width and means for rotating said rollers, a first generally planar platform of a size at least substantially coextensive with said receiving sheet disposed with one end adjacent the nip of roller pair within the confines between the ends of the roller pair for supporting the receiving sheet prior to introduction into the nip of said rollers, said platform extending on an inclined plane with the higher edge thereof proximate the nip of said rollers and provided on its upper surface with a plurality of protuberances for holding the wetted receiving sheet clear of the planar surface of the platform, a second planar upper platform for supporting the temporary sheet, said second planar platform being disposed on an inclined plane in vertically spaced generally registering relation above the first platform with the lower edge thereof proximate to and with the confines of the nip of the pressure rollers and proximate to the upper edge of said first platform, and a tray located along and below the lower edge of the first lower platform for receiving liquid which may flow downwardly from said platform, whereby said sheets can be arranged on the respective platforms in spaced apart oriented relation, excess wetting liquid being removed by gravity while the wetted sheet rests on the lower platform, and the sheet ends adjacent the roller nip are then introduced into such nip to press the sheets together and effect transfer of said pigment layer from said transfer sheet to said receiving sheet.
Claim 2
Dependent Claim
286 words
Apparatus for transferring a photo-hardenable or photosolubilizable pigmented layer from a temporary flexible transfer sheet to a liquid-wetted, flexible permanent receiving sheet which comprises a pair of cooperating pressure rollers at least as long as the maximum sheet width and means for rotating said rollers, a first generally planar platform of a size at least substantially coextensive with said receiving sheet disposed with one end adjacent the nip of roller pair within the confines between the ends of the roller pair for supporting the receiving sheet prior to introduction into the nip of said rollers, said platform extending on an inclined plane with the higher edge thereof proximate the nip of said rollers and provided on its upper surface with a plurality of protuberances for holding the wetted receiving sheet clear of the planar surface of the platform, a second planar upper platform for supporting the temporary sheet, said second planar platform being disposed on an inclined plane in vertically spaced generally registering relation above the first platform with the lower edge thereof proximate to and with the confines of the nip of the pressure rollers and proximate to the upper edge of said first platform, and a tray located along and below the lower edge of the first lower platform for receiving liquid which may flow downwardly from said platform, whereby said sheets can be arranged on the respective platforms in spaced apart oriented relation, excess wetting liquid being removed by gravity while the wetted sheet rests on the lower platform, and the sheet ends adjacent the roller nip are then introduced into such nip to press the sheets together and effect transfer of said pigment layer from said transfer sheet to said receiving sheet.
Claim 3
Dependent Claim
24 words
Apparatus according to claim 1, characterized in that the protuberances on the upper surface of the first platform have the form of semi-spherical projections.
Claim 4
Dependent Claim
45 words
Apparatus according to claim 1, characterized in that the dimension of the second platform in a direction transverse to the roller axes is less than the corresponding dimension of the first support, to thereby provide ready access to the lower edge of the first platform.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |