US4332872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optically annotatable recording film
Assignee: Individual
•
Filing: 1980-09-19
•
Granted: 1982-06-01
•
Expires: 2000-09-19
Abstract
Abstract In a device for projecting a primary image from a transparency along an optical path and for altering the image by selectively directing a writing light source reversably along the optical path toward the transparency, a transparent recording film includes a pre-recorded primary image layer and a secondary layer annotatable by the marking light. The two layers are congruent, and in one embodiment comprise superimposed substrates which are joined mechanically. In another embodiment, the two layers are coated jointly on one substrate, and in a further embodiment the two layers are intimately mixed to form one bifunctional layer. Various means are disclosed whereby the primary image layer is unaffected by the marking light, and the annotatable secondary layer is unaffected by the projection illumination.
Inventors
- 👤 Arthur R. Zingher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:09
CPC Classifications
G; G03; G03C; G03C11/00; G03C11/02; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24835; Y10T428/24843; Y10T428/24851; Y10T428/2486; Y10T428/24868; Y10T428/24876; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/31935; Y10T428/31938
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
107 words
A microfiche film structure for use in a bi-directional microfiche apparatus which projects an image from said film structure and which also includes a laser marking light source for optically annotating said image, including: a primary image recording medium for photographically forming and photochemically fixing a primary image in said film structure; a secondary image recording medium of a separate and distinct character from said primary image recording medium, said secondary image recording medium being disposed in said film structure and being responsive to said laser marking light to record annotations to said primary image, said annotations being recorded in congruent, overlying registration with said primary image.
Claim 2
Dependent Claim
107 words
A microfiche film structure for use in a bi-directional microfiche apparatus which projects an image from said film structure and which also includes a laser marking light source for optically annotating said image, including: a primary image recording medium for photographically forming and photochemically fixing a primary image in said film structure; a secondary image recording medium of a separate and distinct character from said primary image recording medium, said secondary image recording medium being disposed in said film structure and being responsive to said laser marking light to record annotations to said primary image, said annotations being recorded in congruent, overlying registration with said primary image.
Claim 3
Dependent Claim
30 words
The film structure of claim 1, wherein said secondary image recording medium includes a pyrographic compound adapted to produce localized opaque annotating marks upon receipt of said laser marking light.
Claim 4
Dependent Claim
24 words
The film structure of claim 2, wherein said pyrographic compound includes a layer of iron acetyl acetonate coated on a layer of polyvinyl chloride.
Claim 5
Dependent Claim
33 words
The film structure of claim 1 wherein said secondary image recording medium comprises a thermographic monomolecular compound adapted for decomposing and forming localized opaque annotating marks upon illumination by said laser marking light.
Claim 6
Dependent Claim
12 words
The film structure of claim 4, wherein said compound includes lead dithioformate.
Claim 7
Dependent Claim
31 words
The film structure of claim 1, wherein said secondary image recording medium includes a thermographic bimolecular compound adapted for reacting to said laser marking light to produce localized opaque annotating marks.
Claim 8
Dependent Claim
34 words
The film structure of claim 6, wherein said biomolecular compound includes a silver salt and granules of soap intermixed in a binder compound which is adapted to be melted by said laser marking light.
Claim 9
Dependent Claim
32 words
The film structure of claim 1, wherein said secondary image recording medium includes a thermographic compound adapted for melting upon illumination by said laser marking light to form localized opaque annotating marks.
Claim 10
Dependent Claim
32 words
The film structure of claim 8, wherein said thermographic compound includes a transparent compound forming a layer in said film structure and an infra-red wavelength absorbing dye dispersed in said transparent compound.
Claim 11
Dependent Claim
27 words
The film structure of claim 1, wherein said primary image recording medium and said secondary image recording medium are adhered to opposed sides of said film structure.
Claim 12
Dependent Claim
51 words
The film structure of claim 1, wherein said primary image recording medium provides transparent marking portions on a translucent field having a first field color, said secondary image recording medium providing transparent marking portions on a translucent field having a second field color, said first and second field colors being complementary.
Claim 13
Dependent Claim
22 words
The film structure of claim 1, wherein said primary image recording medium comprises a first transparency having a primary image prerecorded thereon.
Claim 14
Dependent Claim
25 words
The film structure of claim 12, further including a second transparency mechanically joined to said first transparency and incorporating said secondary image recording medium therein.
Claim 15
Dependent Claim
40 words
The film structure of claim 13, wherein said secondary image recording medium is confined to defined response zones occupying selected portions of said second transparency, said defined response zones being aligned in registration with selected portions of said primary image.
Claim 16
Dependent Claim
17 words
The film structure of claim 13, wherein said second transparency is selectively removable from said first transparency.
References Cited (Backward Citations)
US3682684A
Cited
US3843384A
Cited
US4076371A
Cited
US3851948A
Cited
US4214249A
Cited
US4025345A
Cited
JPS5125478A
Cited
US4199615A
Cited
US4118229A
Cited
JPS549059A
Cited
JPS555437A
Cited
US4191457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |