US5679505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element useful as a motion picture print film
Assignee: Eastman Kodak Co
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Filing: 1995-12-21
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Granted: 1997-10-21
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Expires: 2015-12-21
Abstract
Abstract A photographic film that is especially useful as a motion picture print film is comprised of a support having, in order, on one side thereof an antihalation undercoat and at least one silver halide emulsion layer and having, in order, on the opposite side thereof an antistatic layer and a protective topcoat; wherein the protective topcoat is comprised of a polyurethane binder and a lubricant and the polyurethane binder has a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 lb/in 2 . The polyurethane binder provides a tough but flexible protective topcoat that is capable of resisting abrasion and scratching when the film is conveyed through a projector and capable of standing up to the repeated use to which motion picture print films are typically subjected.
Inventors
- 👤 Kenneth Lloyd Tingler
- 👤 Charles Chester Anderson
- 👤 Lori Jeanne Shaw-Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:37
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/7614; G03C1/85; G03C1/95; Y; Y10; Y10S; Y10S430/00; Y10S430/151
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
85 words
A motion picture print film comprising a support having, in order, on one side thereof an antihalation undercoat and at least one silver halide emulsion layer and having, in order, on the opposite side thereof an antistatic layer and a protective topcoat; wherein said protective topcoat is comprised of a polyurethane binder and a lubricant and said polyurethane binder has a tensile elongation to break of at least 50% and a Young's modulus measured at a 2% elongation of at least 50000 lb/in 2 .
Claim 2
Dependent Claim
85 words
A motion picture print film comprising a support having, in order, on one side thereof an antihalation undercoat and at least one silver halide emulsion layer and having, in order, on the opposite side thereof an antistatic layer and a protective topcoat; wherein said protective topcoat is comprised of a polyurethane binder and a lubricant and said polyurethane binder has a tensile elongation to break of at least 50% and a Young's modulus measured at a 2% elongation of at least 50000 lb/in 2 .
Claim 3
Dependent Claim
17 words
A motion picture print film as claimed in claim 1, wherein said support is a polyester film.
Claim 4
Dependent Claim
18 words
A motion picture print film as claimed in claim 1, wherein said support is a cellulose triacetate film.
Claim 5
Dependent Claim
20 words
A motion picture print film as claimed in claim 1, wherein said antihalation undercoat comprises a solid particle filter dye.
Claim 6
Dependent Claim
39 words
A motion picture print film as claimed in claim 1, wherein said antistatic layer comprises electrically-conductive metal-containing particles selected from the group consisting of donor-doped metal oxides, metal oxides containing oxygen deficiencies, conductive nitrides, conductive carbides and conductive borides.
Claim 7
Dependent Claim
18 words
A motion picture print film as claimed in claim 1, wherein said antistatic layer comprises an electrically-conductive polymer.
Claim 8
Dependent Claim
17 words
A motion picture print film as claimed in claim 1, wherein said antistatic layer comprises vanadium pentoxide.
Claim 9
Dependent Claim
26 words
A motion picture print film as claimed in claim 1, wherein said antistatic layer has a dry coverage of from 1 to 400 mg/m 2 .
Claim 10
Dependent Claim
26 words
A motion picture print film as claimed in claim 1, wherein said antistatic layer has an electrical resistivity of less than 9 log ohms per square.
Claim 11
Dependent Claim
27 words
A motion picture print film as claimed in claim 1, wherein said topcoat has a dry coverage of from about 50 to about 3000 mg/m 2 .
Claim 12
Dependent Claim
18 words
A motion picture print film as claimed in claim 1, wherein said polyurethane binder is an aliphatic polyurethane.
Claim 13
Dependent Claim
18 words
A motion picture print film as claimed in claim 1, wherein said polyurethane binder is an aqueous-dispersible polyurethane.
Claim 14
Dependent Claim
20 words
A motion picture print film as claimed in claim 1, wherein said polyurethane binder is crosslinked by a crosslinking agent.
Claim 15
Dependent Claim
17 words
A motion picture print film as claimed in claim 1, wherein said lubricant is an aqueous-dispersible lubricant.
Claim 16
Dependent Claim
26 words
A motion picture print film as claimed in claim 1, wherein said topcoat has a coefficient of friction in the range of from 0.15 to 0.30.
Claim 17
Dependent Claim
32 words
A motion picture print film as claimed in claim 1, wherein said topcoat additionally comprises matte particles having a mean diameter in the range of from about 0.5 to about 3 micrometers.
Claim 18
Dependent Claim
28 words
A motion picture print film as claimed in claim 16, wherein said matte particles have a dry coating weight of about 15 to about 65 mg/m 2 .
Claim 19
Dependent Claim
28 words
A motion picture print film as claimed in claim 1, wherein the surface roughness of said topcoat is in the range of from 0. 025 to 0. 045.
Claim 20
Dependent Claim
24 words
A motion picture print film as claimed in claim 1, additionally comprising a gelatin overcoat overlying said at least one silver halide emulsion layer.
Claim 21
Dependent Claim
115 words
A motion picture print film comprising a polyester support having, in order, on one side thereof an antihalation undercoat and at least one silver halide emulsion layer and having, in order, on the opposite side thereof an antistatic layer and a protective topcoat; wherein said antihalation undercoat comprises a solid particle filter dye dispersed in gelatin; said antistatic layer comprises vanadium pentoxide dispersed in a polyesterionomer; said protective topcoat is comprised of a stearate wax dispersed in a polyurethane binder and said polyurethane binder is an aqueous-dispersible aliphatic polyurethane which has a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 lb/in 2 .
Claim 22
Dependent Claim
115 words
A motion picture print film comprising a polyester support having, in order, on one side thereof an antihalation undercoat and at least one silver halide emulsion layer and having, in order, on the opposite side thereof an antistatic layer and a protective topcoat; wherein said antihalation undercoat comprises a solid particle filter dye dispersed in gelatin; said antistatic layer comprises vanadium pentoxide dispersed in a polyesterionomer; said protective topcoat is comprised of a stearate wax dispersed in a polyurethane binder and said polyurethane binder is an aqueous-dispersible aliphatic polyurethane which has a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 lb/in 2 .
Claim 23
Dependent Claim
116 words
A motion picture print film comprising a polyester support having, in order, on one side thereof an antihalation undercoat and at least one silver halide emulsion layer and having, in order, on the opposite side thereof an antistatic layer and a protective topcoat; wherein said antihalation undercoat comprises a solid particle filter dye dispersed in gelatin; said antistatic layer comprises vanadium pentoxide dispersed in a vinylidene-chloride-containing terpolymer latex; said protective topcoat is comprised of carnauba wax dispersed in a polyurethane binder and said polyurethane binder is an aqueous-dispersible aliphatic polyurethane which has a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 lb/in 2 .
Claim 24
Dependent Claim
116 words
A motion picture print film comprising a polyester support having, in order, on one side thereof an antihalation undercoat and at least one silver halide emulsion layer and having, in order, on the opposite side thereof an antistatic layer and a protective topcoat; wherein said antihalation undercoat comprises a solid particle filter dye dispersed in gelatin; said antistatic layer comprises vanadium pentoxide dispersed in a vinylidene-chloride-containing terpolymer latex; said protective topcoat is comprised of carnauba wax dispersed in a polyurethane binder and said polyurethane binder is an aqueous-dispersible aliphatic polyurethane which has a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 lb/in 2 .
Claim 25
Dependent Claim
122 words
A motion picture print film comprising a polyester support having, in order, on one side thereof an antihalation undercoat and at least one silver halide emulsion layer and having, in order, on the opposite side thereof an antistatic layer and a protective topcoat; wherein said antihalation undercoat comprises a solid particle filter dye dispersed in gelatin; said antistatic layer comprises a crosslinked vinylbenzyl ammonium chloride conductive polymer and a cationic vinylidene-chloride-containing terpolymer latex; said protective topcoat is comprised of a stearate wax dispersed in a polyurethane binder and said polyurethane binder is an aqueous-dispersible aliphatic polyurethane which has a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 lbs/in 2 .
Claim 26
Dependent Claim
122 words
A motion picture print film comprising a polyester support having, in order, on one side thereof an antihalation undercoat and at least one silver halide emulsion layer and having, in order, on the opposite side thereof an antistatic layer and a protective topcoat; wherein said antihalation undercoat comprises a solid particle filter dye dispersed in gelatin; said antistatic layer comprises a crosslinked vinylbenzyl ammonium chloride conductive polymer and a cationic vinylidene-chloride-containing terpolymer latex; said protective topcoat is comprised of a stearate wax dispersed in a polyurethane binder and said polyurethane binder is an aqueous-dispersible aliphatic polyurethane which has a tensile elongation to break of at least 50% and a Young's modulus measured at 2% elongation of at least 50000 lbs/in 2 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-10-20 | 2001-04-21 | 2001-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-20 | 2005-04-21 | 2005-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-20 | 2009-04-21 | 2009-10-21 | $7700.00 | Window Closed / Lapsed |