US3833378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developer composition for producing photographic materials for the graphic arts
Assignee: Fujifilm Holdings Corp
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Filing: 1972-04-27
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Granted: 1974-09-03
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Expires: 1992-04-27
Abstract
Abstract A developer composition for producing photographic materials for the graphic arts comprising a dihydroxy benzene developing agent and at least one polyethoxy amino compound represented by the following formula A wherein n ranges from 2 to 10; M RANGES FROM 0 TO 6; AND A + B + C + D + E X M RANGES FROM 5 TO 200 WITH A, B, C, D AND E EACH REPRESENTING AN INTEGER OTHER THAN 0. OR THE FORMULA B wherein R represents an alkyl group of less than four carbon atoms, where C4 x X y ranges from 3 to 100 or R represents a (CH2CH2O)zH group, where x + y + z ranges from 5 to 100, in which x, y and z each represent an integer other than 0 is disclosed.
Inventors
- 👤 K Hayashi
- 👤 Y Iijima
- 👤 T Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:24
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/305; G03C5/3056
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
25 words
The developer composition of claim 1, wherein said composition additionally contains an aldehyde-alkali metal bisulfite adduct, a ketone-alkali metal bisulfite adduct or a combination thereof.
Claim 2
Dependent Claim
13 words
The developer composition of claim 2, wherein said composition contains formaldehyde-sodium bisulfite adduct.
Claim 3
Dependent Claim
20 words
The developer composition of claim 1, wherein said developing agent is hydroquinone, chlorohydroquinone, bromohydroquinone, isopropylhydroquinone, toluhydroquinone, methylhydroquinone, 2,3-dichlorohydroquinone, or 2,5-dimethylhydroquinone.
Claim 4
Dependent Claim
12 words
The developer composition of claim 4, wherein said developing agent is hydroquinone.
Claim 5
Dependent Claim
50 words
The developer composition of claim 1, wherein said polyethoxy amino compound is present at a level ranging from 0.1 g to 100 g per liter of the developer composition and wherein said developing agent is present at a level ranging from 5 to 50 g per liter of developer composition.
Claim 6
Dependent Claim
33 words
A method for producing a photographic line of half-tone reproduction in the graphic arts comprising exposing a high contrast photographic element and developing said exposed element in the developer composition of claim 1.
Claim 7
Dependent Claim
24 words
The method of claim 7, wherein said composition additionally contains a aldehyde-alkali metal bisulfite adduct, a ketone-alkali metal bisulfite adduct or a combination thereof.
Claim 8
Dependent Claim
12 words
The method of claim 8, wherein said composition contains formaldehyde-sodium busulfite adduct.
Claim 9
Dependent Claim
19 words
The method of claim 7, wherein said developing agent is hydroquinone, chlorohydroquinone, bromohydroquinone, isopropylhydroquinone, toluhydroquinone, methylhydroquinone, 2,3-dichlorohydroquinone, or 2,5-dimethylhydroquinone.
Claim 10
Dependent Claim
11 words
The method of claim 10, wherein said developing agent is hydroquinone.
Claim 11
Dependent Claim
48 words
The method of claim 7, wherein said polyethoxy amino compound is present at a level ranging from 0.1 g to 100 g per liter of developer composition and wherein said developing agent is present at a level ranging from 5 to 50 g per liter of developer composition.
Claim 12
Dependent Claim
24 words
The developer composition of claim 1, wherein said compound is an ethylene oxide addition product of ethylenediamine having an addition mol number of 30.
Claim 13
Dependent Claim
24 words
The devloper composition of claim 1, wherein said compound is an ethylene oxide addition product of hexamethylenediamine having an addition mol number of 5.
Claim 14
Dependent Claim
24 words
The developEr composition of claim 1, wherein said compound is an ethylene oxide addition product of trimethylenediamine having an addition mol number of 30.
Claim 15
Dependent Claim
24 words
The developer composition of claim 1, wherein said compound is an ethylene oxide addition product of diethylenetriamine having an addition mol number of 50.
Claim 16
Dependent Claim
24 words
The developer composition of claim 1, wherein said compound is an ethylene oxide addition product of tetraethylenepentamine having an addition mol number of 50.
Claim 17
Dependent Claim
24 words
The developer composition of claim 1, wherein said compound is a methylene oxide addition product of triethylenetetramine having an addition mol number of 100.
Claim 18
Dependent Claim
24 words
The developer composition of claim 1, wherein said compound is an ethylene oxide addition product of diethylenetriamine having an addition mol number of 10.
Claim 19
Dependent Claim
24 words
The developer composition of claim 1, wherein said compound is an ethylene oxide addition product of tetraethylenepentamine having an addition mol number of 10.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |