US4249328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic slide and method of making same
Assignee: Photon Chroma Inc
•
Filing: 1979-07-02
•
Granted: 1981-02-10
•
Expires: 1999-07-02
Abstract
Abstract An improved slide for electrophotographic film which comprises a pair of slide frame forming panels hingedly connected along adjacent edges enabling the panels to be folded together in superposed relation. The inner surfaces of each panel is coated with a pressure sensitive adhesive which bonds an electrophotographic film to one panel. A transparent protective film or a second photographic film may be bonded to the other panel. A conductive foil strip is affixed along an edge of the film for providing a grounding contact required for imaging the film in a duplicating camera and a release paper is disposed over the adhesive coating of the other panel. Subsequent to imaging, a slide is formed by stripping off the release paper and folding the panels so that the adhesive coating bonds the inner surfaces together with the film being retained therebetween.
Inventors
- 👤 John D. Plumadore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:30
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/75; G03G15/758
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
124 words
Slide transparency for electrophotographic film which includes an electrically conductive layer comprising a generally planar frame including a pair of panels defined by a hinge therebetween and each lying in generally in the same plane before folding and each having a window shaped projection aperture therethrough registrable when the panels are folded together about said hinge, the first of said panels having an electrophotographic film disposed thereon spanning the window aperture therein, the inner surface of the second panel having an adhesive thereon for bonding the two panels together in superposed relation when folded about said hinge, and an electrically conductive strip disposed on said film for grounding said electrically conductive layer of the film when imaging said film before said frame is folded.
Claim 2
Dependent Claim
124 words
Slide transparency for electrophotographic film which includes an electrically conductive layer comprising a generally planar frame including a pair of panels defined by a hinge therebetween and each lying in generally in the same plane before folding and each having a window shaped projection aperture therethrough registrable when the panels are folded together about said hinge, the first of said panels having an electrophotographic film disposed thereon spanning the window aperture therein, the inner surface of the second panel having an adhesive thereon for bonding the two panels together in superposed relation when folded about said hinge, and an electrically conductive strip disposed on said film for grounding said electrically conductive layer of the film when imaging said film before said frame is folded.
Claim 3
Dependent Claim
53 words
Slide transparency for electrophotographic film as set forth in claim 1 wherein said film is disposed on the inner surface of said first panel and said adhesive is a pressure sensitive adhesive disposed on the second panel, a release material removably covering said adhesive and peelable therefrom for binding the two panels together.
Claim 4
Dependent Claim
29 words
Slide transparency for electrophotographic film as set forth in claim 2 in which said electrically conductive material is a metallic foil disposed on the surface of said electrophotographic film.
Claim 5
Dependent Claim
31 words
Slide transparency for electrophotographic film as set forth in claim 3 wherein said foil is scribed to cause portions thereof to be deformed into electrical contact with said electrically conductive layer.
Claim 6
Dependent Claim
20 words
Slide transparency for electrophotographic film as set forth in claim 3 wherein said release material and film are generally coplanar.
Claim 7
Dependent Claim
55 words
Slide transparency for an electrophotographic film as set forth in claim 5 wherein said film is generally coextensive with said first frame panel and terminates in contiguous relation with said release material along a line on said first panel spaced from said hinge whereby the release material spans the hinge area of said slide transparency.
Claim 8
Dependent Claim
43 words
Slide transparency for an electrophotographic film as set forth in claim 5 wherein the opening in said second panel is covered with a transparent material for protecting an unfixed image on said electrophotographic film when said frame panels are folded and bonded together.
Claim 9
Dependent Claim
62 words
Slide transparency for electrophotographic film as set forth in claim 5 wherein the dimensions of the apertures in said second panel are greater than the corresponding dimensions of the apertures of the first panel so that light transmitted through said second panel will project over the entire image imprinted on said film despite some misalignment of the two panels when bonded together.
Claim 10
Dependent Claim
50 words
Slide transparency for electrophotographic film as set forth in claim 1 and further including a photographic film disposed on the second of said panels, spanning the window therein, such that said photographic film and said electrophotograhic film are disposed in surface-to-surface aligned contact when said two panels are bonded together.
Claim 11
Dependent Claim
31 words
Slide transparency for electrophotographic film as set forth in claim 9 wherein said photographic film is a pre-imaged color transparency projectable with said electrophotographic film to produce a composite color image.
References Cited (Backward Citations)
US3077150A
Cited
US3240142A
Cited
US3542465A
Cited
US3694069A
Cited
DE2112132A1
Cited
US3813164A
Cited
US3864035A
Cited
US4064514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-10 | 1984-08-11 | 1985-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-10 | 1988-08-11 | 1989-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-10 | 1992-08-11 | 1993-02-10 | $7700.00 | Window Closed / Lapsed |