US4652508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toner compositions with stabilizer irreversibly anchored thereto
Assignee: Xerox Corp
•
Filing: 1985-04-11
•
Granted: 1987-03-24
•
Expires: 2005-04-11
Abstract
Abstract Disclosed is an improved toner composition comprised of colored dyes and resin particles, having irreversibly anchored thereto stabilizer generated by the reaction of a stabilizer selected from the group consisting of hydroxy celluloses, poly(acrylic acids), poly(vinyl butyral), and poly(vinyl pyridines), with an alkyl halide, an alcohol, or a carboxylic acid.
Inventors
- 👤 Christopher K. Ober
- 👤 Kar P. Lok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:55
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/087; G03G9/08702; G03G9/08726; G03G9/08722; G03G9/0874; G03G9/08775; G03G9/08777
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
49 words
An improved toner composition comprised of colored dyes and resin particles, having irreversibly anchored thereto a stabilizer generated by the reaction of a stabilizer selected from the group consisting of hydroxy celluloses, poly(acrylic acids), poly(vinyl butyral), and poly(vinyl pyridines), with an alkyl halide, an alcohol, or a carboxylic acid.
Claim 2
Dependent Claim
49 words
An improved toner composition comprised of colored dyes and resin particles, having irreversibly anchored thereto a stabilizer generated by the reaction of a stabilizer selected from the group consisting of hydroxy celluloses, poly(acrylic acids), poly(vinyl butyral), and poly(vinyl pyridines), with an alkyl halide, an alcohol, or a carboxylic acid.
Claim 3
Dependent Claim
19 words
An improved composition in accordance with claim 1 wherein the stabilizers containing tertiary amines are reacted with alkyl halides.
Claim 4
Dependent Claim
15 words
An improved composition in accordance with claim 2 wherein the alkyl halide is cetyl chloride.
Claim 5
Dependent Claim
17 words
An improved composition in accordance with claim 1 wherein the poly(acrylic acid) stabilizers are reacted with alcohols.
Claim 6
Dependent Claim
13 words
An improved composition in accordance with claim 4 wherein the alcohol is methanol.
Claim 7
Dependent Claim
13 words
An improved composition in accordance with claim 4 wherein the alcohol is ethanol.
Claim 8
Dependent Claim
18 words
An improved composition in accordance with claim 1 wherein the hydroxy cellulose stabilizers are reacted with carboxylic acids.
Claim 9
Dependent Claim
16 words
An improved composition in accordance with claim 7 wherein the stabilizer is reacted with acetic acid.
Claim 10
Dependent Claim
17 words
An improved composition in accordance with claim 1 wherein the resin particles are comprised of styrene polymers.
Claim 11
Dependent Claim
22 words
An improved composition in accordance with claim 9 wherein the resin particles are comprised of styrene methacrylate, styrene acrylate, or styrene butadienes.
Claim 12
Dependent Claim
26 words
An improved toner composition in accordance with claim 1 wherein the colored dyes are selected form the group consisting of red, blue, yellow, cyan, and magenta.
Claim 13
Dependent Claim
31 words
An improved toner composition in accordance with claim 1 wherein the stabilizer particles are present in an amount of from about 0.1 percent by weight to about 1 percent by weight.
Claim 14
Dependent Claim
48 words
A method of developing images in an electrostatic imaging apparatus comprising causing the formation of an electrostatic image on an imaging member, followed by development of the image with the toner composition of claim 1, thereafter transferring the image to a suitable substrate and affixing the image thereon.
Claim 15
Dependent Claim
17 words
An imaging method in accordance with claim 13 wherein the resin particles are comprised of styrene polymers.
Claim 16
Dependent Claim
22 words
An imaging method in accordance with claim 14 wherein the resin particles are comprised of styrene methacrylate, styrene acrylate, or styrene butadienes.
Claim 17
Dependent Claim
26 words
An imaging method in accordance with claim 13 wherein the colored dyes are selected from a group consisting of red, blue, green, cyan and magenta substances.
Claim 18
Dependent Claim
30 words
An imaging method in accordance with claim 16 wherein the colored dyes are present in an amount of from about 0.1 percent by weight to about 1 percent by weight.
Claim 19
Dependent Claim
44 words
An improved toner composition in accordance with claim 1 wherein the triboelectric charge on the resulting toner composition having irreversibly anchored thereto the transformed stabilizers is from a positive or negative 5.0 microcoulombs per gram to a positive or negative 50 microcoulombs per gram.
Claim 20
Dependent Claim
14 words
A developer composition comprised of the toner composition of claim 1 and carrier particles.
Claim 21
Dependent Claim
16 words
A developer composition in accordance with claim 19 wherein the carrier particles are comprised of steel.
Claim 22
Dependent Claim
51 words
An improved toner composition consisting essentially of colored dyes and resin particles having irreversibly anchored thereto a component generated by the reaction of a compound selected from the group consisting of hydroxy celluloses, and poly(acrylic acid), poly(vinyl butyral), and poly(vinyl pyridines); with an alkyl halide, an alcohol, or a carboxylic acid.
Claim 23
Dependent Claim
51 words
An improved toner composition consisting essentially of colored dyes and resin particles having irreversibly anchored thereto a component generated by the reaction of a compound selected from the group consisting of hydroxy celluloses, and poly(acrylic acid), poly(vinyl butyral), and poly(vinyl pyridines); with an alkyl halide, an alcohol, or a carboxylic acid.
Claim 24
Dependent Claim
16 words
An improved toner composition in accordance with claim 21 wherein the components is a steric stabilizer.
Claim 25
Dependent Claim
17 words
An improved toner composition in accordance with claim 21 wherein there results a positively charged toner composition.
Claim 26
Dependent Claim
17 words
An improved toner composition in accordance with claim 21 wherein there results a negatively charged toner composition.
Claim 27
Dependent Claim
14 words
A developer composition comprised of the toner composition of claim 21 and carrier particles.
Claim 28
Dependent Claim
15 words
A developer composition in accordance with claim 25 wherein the toner composition is negatively charged.
Claim 29
Dependent Claim
15 words
A developer composition in accordance with claim 25 wherein the toner composition is positively charged.
Claim 30
Dependent Claim
16 words
A developer composition in accordance with claim 25 wherein the carrier particles are comprised of steel.
References Cited (Backward Citations)
US3965021A
Cited
US3591537A
Cited
US3852208A
Cited
US3933664A
Cited
US3959153A
Cited
US3767603A
Cited
US3770692A
Cited
US3941729A
Cited
US4134760A
Cited
US4152279A
Cited
US4077804A
Cited
US4107062A
Cited
EP0010986A1
Cited
US4282304A
Cited
US4299903A
Cited
US4448871A
Cited
JPS57139750A
Cited
JPS57168254A
Cited
JPS58107549A
Cited
JPS59177570A
Cited
JPS59195662A
Cited
US4476210A
Cited
JPS59228660A
Cited
US4524199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |