US5027151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film transparency holder
Assignee: FFEI Ltd
•
Filing: 1990-08-16
•
Granted: 1991-06-25
•
Expires: 2010-08-16
Abstract
Abstract A method of mounting a transparency for use in an input scanner comprises first inserting a transparency into an envelope. Within the envelope a film of liquid of substantially the same refractive index as the transparency is spread over the transparency. The liquid may be provided in a rupturable pod within the envelope. The transparency holder is sealed by either an integral seal or adhesive tape. The transparency holder protects the transparency from dust and scratches and helps to prevent Newtons rings occuring in the image produced when mounted in the scanner.
Inventors
- 👤 Robert W. Rayner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:34
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/10; H04N2201/00; H04N2201/04; H04N2201/0402; H04N2201/0404; H04N2201/0422
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
46 words
A method of mounting a transparency for use in an input scanner, the method comprising inserting said transparency into an envelope, and spreading a film of liquid over said transparency within said envelope, said liquid having substantially the same refractive index as that of said transparency.
Claim 2
Independent Claim
46 words
A method of mounting a transparency for use in an input scanner, the method comprising inserting said transparency into an envelope, and spreading a film of liquid over said transparency within said envelope, said liquid having substantially the same refractive index as that of said transparency.
Claim 3
Dependent Claim
17 words
A method according to claim 1, wherein said liquid has a refractive index between 1.4 and 1.5.
Claim 4
Dependent Claim
21 words
A method according to claim 1, wherein said envelope is reversibly sealed to maintain said liquid and transparency within said envelope.
Claim 5
Dependent Claim
19 words
A method according to claim 1, wherein a rupturable pod is provided within said envelope to contain said liquid.
Claim 6
Dependent Claim
18 words
A method according to claim 4, wherein said pod is formed as an integral part of said envelope.
Claim 7
Dependent Claim
64 words
A film transparency holder comprising a transparent flexible envelope into which a film transparency can be inserted; and a pod of liquid within said envelope, said liquid having substantially the same refractive index as that of said transparency, the arrangement being such that said pod ruptures when pressurized to release said liquid which can spread between the surfaces of said envelope and said transparency.
Claim 8
Dependent Claim
64 words
A film transparency holder comprising a transparent flexible envelope into which a film transparency can be inserted; and a pod of liquid within said envelope, said liquid having substantially the same refractive index as that of said transparency, the arrangement being such that said pod ruptures when pressurized to release said liquid which can spread between the surfaces of said envelope and said transparency.
Claim 9
Dependent Claim
14 words
A holder according to claim 6, wherein a seal is provided for said envelope.
Claim 10
Dependent Claim
20 words
A holder according to claim 7, wherein said seal comprises a self-amalgamating tape on the inner surfaces of the opening.
Claim 11
Dependent Claim
15 words
A holder according to claim 6, wherein said pod is integrally formed with said envelope.
Claim 12
Dependent Claim
17 words
A holder according to claim 6, wherein said envelope is made of optically clear and flat material.
Claim 13
Dependent Claim
18 words
A holder according to claim 6, wherein said liquid has a refractive index of between 1.4 and 1.5.
References Cited (Backward Citations)
US2890621A
Cited
US2855822A
Cited
US2843011A
Cited
DE2109752A1
Cited
US4047804A
Cited
US3893763A
Cited
US4067737A
Cited
US4209250A
Cited
GB2085762A
Cited
US4509852A
Cited
US4480910A
Cited
GB2096537A
Cited
US4528570A
Cited
US4763169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-24 | 1994-12-24 | 1995-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-24 | 1998-12-24 | 1999-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-24 | 2002-12-24 | 2003-06-25 | $7700.00 | Window Closed / Lapsed |