US5407774A
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US
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Charge control agent and positively chargeable toner for developing electrostatic images
Assignee: Orient Chemical Industries Ltd
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Filing: 1993-07-14
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Granted: 1995-04-18
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Expires: 2013-07-14
Abstract
Abstract A charge control agent for positive charging whose active ingredient is a salt-forming compound represented by the following formula and a positively chargeable toner for developing electrostatic images comprising at least one kind of the charge control agent, a coloring agent and a resin. <IMAGE>yl group, a substituted or unsubstituted phenyl group, or -COR5 in which R5 is a lower alkyl group; Z represents a hydrogen, a hydroxyl group or an alkyl group; R1 and R3 independently represent an alkyl group having 1 to 18 carbon atoms or a benzyl group; R2 represents an alkyl group having 5 to 18 carbon atoms; and R4 represents an alkyl group having 1 to 4 carbon atoms or a benzyl group.
Inventors
- 👤 Chiemi Matsushima
- 👤 Tetsuji Kihara
- 👤 Shun-ichiro Yamanaka
- 👤 Kazuaki Sukata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:55
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/097; G03G9/09733; G03G9/09741; G03G9/0975
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
108 words
A charge control agent for positive charging whose active ingredient is a salt-forming compound represented by the following formula I: ##STR19## wherein X represents an alkyl group, a cycloalkyl group, a substituted or unsubstituted phenyl group, or --COR 5 in which R 5 is a lower alkyl group; Z represents a hydrogen, a hydroxyl group or an alkyl group; R 1 and R 3 independently represent an alkyl group having 1 to 18 carbon atoms or a benzyl group; R 2 represents an alkyl group having 5 to 18 carbon atoms; and R 4 represents an alkyl group having 1 to 4 carbon atoms or a benzyl group.
Claim 2
Dependent Claim
108 words
A charge control agent for positive charging whose active ingredient is a salt-forming compound represented by the following formula I: ##STR19## wherein X represents an alkyl group, a cycloalkyl group, a substituted or unsubstituted phenyl group, or --COR 5 in which R 5 is a lower alkyl group; Z represents a hydrogen, a hydroxyl group or an alkyl group; R 1 and R 3 independently represent an alkyl group having 1 to 18 carbon atoms or a benzyl group; R 2 represents an alkyl group having 5 to 18 carbon atoms; and R 4 represents an alkyl group having 1 to 4 carbon atoms or a benzyl group.
Claim 3
Dependent Claim
36 words
The charge control agent of claim 1 wherein the anion component of the salt-forming compound is an aminonaphtholsulfonic acid residue selected from the group consisting of 2-phenylamino-5-naphthol-7-sulfonic acid residue, 2-methylamino-5-naphthol-7-sulfonic acid residue and 2-acetylamino-5-naphthol-7-sulfonic acid residue.
Claim 4
Dependent Claim
33 words
The charge control agent of claim 1 wherein the cation component of the salt-forming compound is an ammonium selected from the group consisting of trioctylmethylammonium, trilaurylmethylammonium, triamylbenzylammonium, trihexylbenzylammonium, trioctylbenzylammonium, trilaurylbenzylammonium, benzyldimethylstearylammonium and benzyldimethyloctylammonium.
Claim 5
Dependent Claim
22 words
The charge control agent of claim 1 wherein R 1 through R 3 are alkyl groups having 5 or more carbon atoms.
Claim 6
Dependent Claim
27 words
The charge control agent of claim 1 wherein R 1 through R 3 are alkyl groups having 8 or more carbon atoms. R 3 in formula I.
Claim 7
Dependent Claim
27 words
A positively chargeable toner for developing electrostatic images comprising at least one kind of the charge control agent of claim 1, a coloring agent and a resin.
Claim 8
Dependent Claim
35 words
Positively chargeable toner of claim 6 wherein the anion component of the salt-forming compound is an aminonaphtholsulfonic acid residue selected from the group consisting of 2-phenylamino-5-naphthol-7-sulfonic acid residue, 2-methylamino-5-naphthol-7-sulfonic acid residue and 2-acetylamino-5-naphthol-7-sulfonic acid residue.
Claim 9
Dependent Claim
32 words
Positively chargeable toner of claim 6 wherein the cation component of the salt-forming compound is an ammonium selected from the group consisting of trioctylmethylammonium, trilaurylmethylammonium, triamylbenzylammonium, trihexylbenzylammonium, trioctylbenzylammonium, trilaurylbenzylammonium, benzyldimethylstearylammonium and benzyldimethyloctylammonium.
Claim 10
Dependent Claim
21 words
Positively chargeable toner of claim 6 wherein R 1 through R 3 are alkyl groups having 5 or more carbon atoms.
Claim 11
Dependent Claim
21 words
Positively chargeable toner of claim 6 wherein R 1 through R 3 are alkyl groups having 8 or more carbon atoms.
Claim 12
Dependent Claim
30 words
Positively chargeable toner of claim 6 wherein the charge control agent is present in an amount, by weight, of about 0.1 to 10 parts per 100 parts of the resin.
Claim 13
Dependent Claim
30 words
Positively chargeable toner of claim 6 wherein the charge control agent is present in an amount, by weight, of about 0.5 to 5 parts per 100 parts of the resin.
Claim 14
Dependent Claim
100 words
Positively chargeable toner for developing electrostatic images comprising a toner resin and a positive charging charge control agent comprising a salt-forming compound having an anion component and a cation component and having the formula ##STR20## wherein X is alkyl, cycloalkyl, unsubstituted or substituted phenyl, or --COR 5 in which R 5 is lower alkyl, Z is hydrogen, hydroxyl or alkyl, R 1 and R 3 each independently is alkyl having 1 to 18 carbon atoms or benzyl, R 2 is alkyl having 5 to 18 carbon atoms, and R 4 is alkyl having 1 to 4 carbon atoms or benzyl.
Claim 15
Dependent Claim
100 words
Positively chargeable toner for developing electrostatic images comprising a toner resin and a positive charging charge control agent comprising a salt-forming compound having an anion component and a cation component and having the formula ##STR20## wherein X is alkyl, cycloalkyl, unsubstituted or substituted phenyl, or --COR 5 in which R 5 is lower alkyl, Z is hydrogen, hydroxyl or alkyl, R 1 and R 3 each independently is alkyl having 1 to 18 carbon atoms or benzyl, R 2 is alkyl having 5 to 18 carbon atoms, and R 4 is alkyl having 1 to 4 carbon atoms or benzyl.
Claim 16
Dependent Claim
33 words
Toner of claim 13 wherein the anion component of the salt-forming compound is an aminonaphtholsulfonic acid anion selected from the group consisting of 2-phenylamino-5-naphthol-7-sulfonic acid anion, 2-methylamino-5-naphthol-7-sulfonic acid anion and 2-acetylamino-5-naphthol-7-sulfonic acid anion.
Claim 17
Dependent Claim
30 words
Toner of claim 13 wherein the cation component of the salt-forming compound is an ammonium selected from the group consisting of trioctylmethylammonium, trilaurylmethylammonium, triamylbenzylammonium, trihexylbenzylammonium, trioctylbenzylammonium, trilaurylbenzylammonium, benzyldimethylstearylammonium and benzyldimethyloctylammonium.
Claim 18
Dependent Claim
22 words
Toner of claim 13 wherein R 1 , R 2 and R 3 are each alkyl having 5 or more carbon atoms.
Claim 19
Dependent Claim
22 words
Toner of claim 13 wherein R 1 , R 2 and R 3 are each alkyl having 8 or more carbon atoms.
Claim 20
Dependent Claim
28 words
Toner of claim 13 wherein the charge control agent is present in an amount by weight of about 0.1 to 10 parts per 100 parts of the resin.
Claim 21
Dependent Claim
28 words
Toner of claim 13 wherein X is lower alkyl, cyclo lower alkyl, phenyl, lower alkyl substituted phenyl or lower alkanoyl, and Z is hydrogen, hydroxyl or lower alkyl.
Claim 22
Dependent Claim
68 words
Toner of claim 13 wherein X is alkyl having 1 to 4 carbon atoms, cycloalkyl having 3 to 6 ring carbon atoms, phenyl, alkylphenyl in which the alkyl moiety has 1 to 4 carbon atoms, dialkylphenyl in which each alkyl moiety has 1 to 4 carbon atoms, or alkanoyl having 2 to 5 carbon atoms, and Z is hydrogen, hydroxyl or alkyl having 1 to 4 carbon atoms.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-04-17 | 1998-10-17 | 1999-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-17 | 2002-10-17 | 2003-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-17 | 2006-10-17 | 2007-04-18 | $7700.00 | Window Closed / Lapsed |