US4826749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toner for developing electrostatic latent images
Assignee: Orient Chemical Industries Ltd
•
Filing: 1986-04-17
•
Granted: 1989-05-02
•
Expires: 2006-04-17
Abstract
Abstract A toner for developing electrostatic latent images comprising 0.5 to 5 parts by weight of a salt forming compound represented by the formula <IMAGE> wherein R1 is C1-C8 alkyl or benzyl, R2 and R3 each C1-C18 alkyl, R4 is C1-C18 alkyl or benzyl, X is hydroxyl or amino, and Y is hydroxyl or hydrogen and is not hydrogen when X is hydroxyl, and 100 parts by weight of a resin.
Inventors
- 👤 Yoji Kawagishi
- 👤 Shinichi Narita
- 👤 Takashi Kiriu
- 👤 Schunichiro Yamanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:46
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/097; G03G9/09733; G03G9/09741; G03G9/0975
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
83 words
A toner for developing electrostatic latent images characterized in that the toner comprises a resin and a charge control effective amount of a salt forming compound represented by the formula ##STR18## wherein R 1 is C 1 -C 8 alkyl or benzyl, R 2 and R 3 are each C 1 -C 18 alkyl, R 4 is C 1 -C 18 alkyl or benzyl, X is hydroxyl or amino, and Y is hydroxyl or hydrogen and is not hydrogen when X is hydroxyl.
Claim 2
Dependent Claim
83 words
A toner for developing electrostatic latent images characterized in that the toner comprises a resin and a charge control effective amount of a salt forming compound represented by the formula ##STR18## wherein R 1 is C 1 -C 8 alkyl or benzyl, R 2 and R 3 are each C 1 -C 18 alkyl, R 4 is C 1 -C 18 alkyl or benzyl, X is hydroxyl or amino, and Y is hydroxyl or hydrogen and is not hydrogen when X is hydroxyl.
Claim 3
Dependent Claim
33 words
A toner as defined in claim 1 which comprises 0.5 to 5 parts by weight of the salt forming compound represented by the formula (I) and 100 parts by weight of a resin.
Claim 4
Dependent Claim
9 words
Toner of claim 1, further including a coloring agent.
Claim 5
Dependent Claim
13 words
Toner of claim 1 and mixed with a carrier to form a developer.
Claim 6
Dependent Claim
18 words
Toner of claim 1, further including a coloring agent and mixed with a carrier to form a developer.
Claim 7
Dependent Claim
13 words
Toner of claim 1, wherein R 1 and R 4 are both benzyl.
Claim 8
Dependent Claim
22 words
Toner of claim 1, wherein R 1 is C 1 -C 8 alkyl and R 4 is C 1 -C 18 alkyl.
Claim 9
Dependent Claim
18 words
Toner of claim 1, wherein R 1 is C 1 -C 8 alkyl and R 4 is benzyl.
Claim 10
Dependent Claim
11 words
Toner of claim 1, wherein X and Y are both hydroxyl.
Claim 11
Dependent Claim
12 words
Toner of claim 1, wherein X is amino and Y is hydroxyl.
Claim 12
Dependent Claim
12 words
Toner of claim 1, wherein X is amino and Y is hydrogen.
Claim 13
Dependent Claim
9 words
Toner of claim 1 wherein said compound is benzyltripropyl-ammonium-1,7-dihydroxy-naphthalene-3-sulfonate.
Claim 14
Dependent Claim
9 words
Toner of claim 1 wherein said compound is benzyltripropyl-ammonium-2,3-dihydroxy-naphthalene-7-sulfonate.
Claim 15
Dependent Claim
9 words
Toner of claim 1 wherein said compound is benzyltributyl-ammonium-1,7-dihydroxy-naphthalene-1-sulfonate.
Claim 16
Dependent Claim
9 words
Toner of claim 1 wherein said compound is benzyltributyl-ammonium-4,5-dihydroxy-naphthalene-1-sulfonate.
Claim 17
Dependent Claim
9 words
Toner of claim 1 wherein said compound is stearyltrimethyl-ammonium-1,7-dihydroxy-naphthalene-3-sulfonate.
Claim 18
Dependent Claim
9 words
Toner of claim 1 wherein said compound is benzyloctyl-dipropyl-ammonium-1,7-dihydroxy-naphthalene-3-sulfonate.
Claim 19
Dependent Claim
9 words
Toner of claim 1 wherein said compound is dibenzyl-dimethyl-ammonium-1,7-dihydroxy-naphthalene-3-sulfonate.
Claim 20
Dependent Claim
9 words
Toner of claim 1 wherein said compound is benzyltributyl-ammonium-1,5-dihydroxy-naphthalene-4-sulfonate.
Claim 21
Dependent Claim
9 words
Toner of claim 1 wherein said compound is benzyltributyl-ammonium-1-hydroxy-6-amino-naphthalene-3-sulfonate.
Claim 22
Dependent Claim
9 words
Toner of claim 1 wherein said compound is benzyltributyl-ammonium-4-amino-naphthalene-1-sulfonate.
Claim 23
Dependent Claim
9 words
Toner of claim 1 wherein said compound is benzyltripropyl-ammonium-2-amino-naphthalene-1-sulfonate.
Claim 24
Dependent Claim
9 words
Toner of claim 1 wherein said compound is benzyloctyl-dimethyl-ammonium-1-amino-naphthalene-7-sulfonate.
Claim 25
Dependent Claim
9 words
Toner of claim 1 wherein said compound is dibenzyl-dimethyl-ammonium-4-amino-naphthalene-1-sulfonate.
Claim 26
Dependent Claim
93 words
A toner for developing electrostatic latent images characterized in that the toner comprises a resin and a 0.1 to 10 parts by weight, per 100 parts by weight of the resin, of a salt forming compound represented by the formula ##STR19## wherein R 1 is C 1 -C 8 alkyl or benzyl, R 2 and R 3 are each C 1 -C 18 alkyl, R 4 is C 1 -C 18 alkyl or benzyl, X is hydroxyl or amino, and Y is hydroxyl or hydrogen and is not hydrogen when X is hydroxyl.
Claim 27
Dependent Claim
93 words
A toner for developing electrostatic latent images characterized in that the toner comprises a resin and a 0.1 to 10 parts by weight, per 100 parts by weight of the resin, of a salt forming compound represented by the formula ##STR19## wherein R 1 is C 1 -C 8 alkyl or benzyl, R 2 and R 3 are each C 1 -C 18 alkyl, R 4 is C 1 -C 18 alkyl or benzyl, X is hydroxyl or amino, and Y is hydroxyl or hydrogen and is not hydrogen when X is hydroxyl.
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) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |