US5294473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic polyester support
Assignee: Fujifilm Holdings Corp
•
Filing: 1993-08-13
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Granted: 1994-03-15
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Expires: 2013-08-13
Abstract
Abstract A photographic polyester support is disclosed which hardly curls when heat-treated at a temperature of from 50° C. to the glass transition temperature thereof in the form of a bulk roll, its thickness pattern satisfying the conditions of (1) Max-Min in the whole widthwise direction (TD R value): 8 μm or less, (2) Max-Min of 5 m length in the lengthwise direction (MD R value): 10 μm or less, (3) the difference in thickness between the adjacent hill and hollow (MD fluctuation): 8 μm or less, and (4) the maximum value of hills above a base line of the average thickness of both ends (TD base line value): 5 μm or less. The surface flatness of the heat-treated support is good. When the support is coated with photographic emulsions, the surface of the coated photographic material is even.
Inventors
- 👤 Fumio Kawamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:21
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/795; G03C1/7954; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/31; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
61 words
A photographic polyester support which has a thickness pattern having a TD R value, an MD R value, an MD fluctuation and a TD base line value as follows: (1) TD R value: 8 μm or less (2) MD R value: 10 μm or less (3) MD fluctuation: 8 μm or less (4) TD base line value: 5 μm or less.
Claim 2
Dependent Claim
61 words
A photographic polyester support which has a thickness pattern having a TD R value, an MD R value, an MD fluctuation and a TD base line value as follows: (1) TD R value: 8 μm or less (2) MD R value: 10 μm or less (3) MD fluctuation: 8 μm or less (4) TD base line value: 5 μm or less.
Claim 3
Dependent Claim
25 words
A photographic polyester support as claimed in claim 1, which has been coated with at least one of a subbing layer and a backing layer.
Claim 4
Dependent Claim
28 words
A photographic polyester support as claimed in claim 1, which is made of polyethylene terephthalate or a compound formed therefrom or polyethylene naphthalate or a compound formed therefrom.
Claim 5
Dependent Claim
31 words
A photographic polyester support as claimed in claim 1, which is made of a polyester obtained by reacting 2,6-naphthalene-dicarboxylic acid or dimethyl 2,6-naphthalene-dicarboxylate and a glycol consisting essentially of ethylene glycol.
Claim 6
Dependent Claim
31 words
A photographic polyester support as claimed in claim 4, which has been biaxially stretched 3.0 to 3.5 times in a lengthwise direction and 2.8 to 4.2 times in a crosswise direction.
Claim 7
Dependent Claim
13 words
A photographic polyester support as claimed in claim 1, which has been knurled.
Claim 8
Dependent Claim
30 words
A photographic polyester support as claimed in claim 6, in which the knurled thickness is thicker than the mean thickness of the bulk roll by 5 μm to 50 μm.
Claim 9
Dependent Claim
24 words
A photographic polyester support as claimed in any of claims 1 to 7, which has a thickness of from 60 μm to 90 μm.
Claim 10
Dependent Claim
15 words
A photographic polyester support as claimed in claim 1, which is made of polyethylene naphthalate.
Claim 11
Dependent Claim
19 words
A photographic polyester support as claimed in claim 1, wherein the support is a film containing an ultraviolet absorbent.
Claim 12
Dependent Claim
23 words
A photographic polyester support as claimed in claim 1, wherein the support is a film which has been treated by a corona-discharging treatment.
Claim 13
Dependent Claim
20 words
A photographic polyester support as claimed in claim 2, which is coated with a subbing layer of a hydrophilic binder.
Claim 14
Dependent Claim
18 words
A photographic polyester support as claimed in claim 12, which is coated with a subbing layer of gelatin.
References Cited (Backward Citations)
US4141735A
Cited
US4645731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-14 | 1997-09-13 | 1998-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-14 | 2001-09-13 | 2002-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-14 | 2005-09-13 | 2006-03-15 | $7700.00 | Window Closed / Lapsed |