Patent US4623606A successfully refreshed from Google Patents.
US4623606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toner compositions with negative charge enhancing additives
Assignee: Xerox Corp
•
Filing: 1986-01-24
•
Granted: 1986-11-18
•
Expires: 2006-01-24
Abstract
Abstract Disclosed is negatively charged toner composition comprised of resin particles, pigment particles, and as a charge enhancing additive an iron complex compound of the following formula: ##STR1## wherein A is independently selected from the group consisting of hydrogen, alkyl substituents, halogen, nitro, and alkoxy; n is the number 1, 2 or 3; X is a cation; and B is of the formula ##STR2## wherein R is selected from the group consisting of hydrogen, alkyl, halogen, nitro, and alkoxy; and n is as defined herein.
Inventors
- 👤 Roger N. Ciccarelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:47
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/09; G03G9/0906; G03G9/091; C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/22
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
83 words
A negatively charged toner composition comprised of resin particles, pigment particles, and as a charge enhancing additive an iron complex compound of the following formula: ##STR7## wherein A is independently selected from the group consisting of hydrogen, alkyl substituents, halogen, nitro, and alkoxy; n is the number 1, 2 or 3; X is a cation; and B is of the formula ##STR8## wherein R is selected from the group consisting of hydrogen, alkyl, halogen, nitro, and alkoxy; and n is as defined herein.
Claim 2
Dependent Claim
83 words
A negatively charged toner composition comprised of resin particles, pigment particles, and as a charge enhancing additive an iron complex compound of the following formula: ##STR7## wherein A is independently selected from the group consisting of hydrogen, alkyl substituents, halogen, nitro, and alkoxy; n is the number 1, 2 or 3; X is a cation; and B is of the formula ##STR8## wherein R is selected from the group consisting of hydrogen, alkyl, halogen, nitro, and alkoxy; and n is as defined herein.
Claim 3
Dependent Claim
20 words
A toner composition in accordance with claim 1 wherein the alkyl substituent is from 1 to about 20 carbon atoms.
Claim 4
Dependent Claim
14 words
A toner composition in accordance with claim 1 wherein the alkyl substituent is methyl.
Claim 5
Dependent Claim
15 words
A toner composition in accordance with claim 1 wherein the halogen is chloride or fluoride.
Claim 6
Dependent Claim
26 words
A toner composition in accordance with claim 1 wherein the cation X is selected from the group consisting of hydrogen, sodium, potassium, ammonium, and substituted ammonium.
Claim 7
Dependent Claim
13 words
A toner composition in accordance with claim 1 wherein the cation is hydrogen.
Claim 8
Dependent Claim
30 words
A toner composition in accordance with claim 1 wherein the iron complex is present in an amount of from about 0.25 percent by weight to about 5 percent by weight.
Claim 9
Dependent Claim
30 words
A toner composition in accordance with claim 1 wherein the iron complex is present in an amount of from about 1 percent by weight to about 5 percent by weight.
Claim 10
Dependent Claim
12 words
A toner composition in accordance with claim 1 wherein X is sodium.
Claim 11
Dependent Claim
20 words
A toner composition in accordance with claim 1 wherein the resin particles are comprised of styrene polymers, or mixtures thereof.
Claim 12
Dependent Claim
15 words
A toner composition in accordance with claim 10 wherein the styrene polymer is styrene butylmethacrylate.
Claim 13
Dependent Claim
17 words
A toner composition in accordance with claim 1 wherein the resin paticles are comprised of a polyester.
Claim 14
Dependent Claim
15 words
A toner composition in accordance with claim 1 wherein the pigment particles are carbon black.
Claim 15
Dependent Claim
14 words
A developer composition comprised of the toner composition of claim 1 and carrier particles.
Claim 16
Dependent Claim
16 words
A developer composition in accordance with claim 14 wherein the carrier particles are comprised of ferrites.
Claim 17
Dependent Claim
18 words
A developer composition in accordance with claim 14 wherein the carrier particles are comprised of an iron powder.
Claim 18
Dependent Claim
20 words
A developer composition in accordance with claim 14 wherein the carrier particles consist of a core with a coating thereover.
Claim 19
Dependent Claim
17 words
A developer composition in accordance with claim 14 wherein the coating is comprised of a methyl terpolymer.
Claim 20
Dependent Claim
26 words
A developer composition in accordance with claim 14 wherein the alkyl substituent on the charge enhancing iron complex is from 1 to about 20 carbon atoms.
Claim 21
Dependent Claim
14 words
A developer composition in accordance with claim 14 wherein the alkyl substituent is methyl.
Claim 22
Dependent Claim
22 words
A developer composition in accordance with claim 14 wherein the cation X on the charge enhancing iron complex is hydrogen or sodium.
Claim 23
Dependent Claim
20 words
A developer composition in accordance with claim 14 wherein the resin particles are comprised of styrene polymers, or mixtures thereof.
Claim 24
Dependent Claim
30 words
A developer composition in accordance with claim 14 wherein the additive particles are present in an amount of from about 0.25 percent by weight to about 5 percent by weight.
Claim 25
Dependent Claim
26 words
A developer composition in accordance with claim 14 wherein from about 1 percent by weight to about 5 percent by weight of additive particles are present.
Claim 26
Dependent Claim
36 words
A method of imaging which comprises formulating an electrostatic latent image on a positively charged photoreceptor; affecting development thereof with the toner composition of claim 1; and thereafter transferring the developed image to a suitable substrate.
Claim 27
Dependent Claim
19 words
A method of imaging in accordance with claim 25 wherein the transferred image is permanently fixed to the substrate.
Claim 28
Dependent Claim
28 words
A method of imaging in accordance with claim 25 wherein the alkyl substituent for the iron complex charge enhancing additive contains from 1 to about 20 carbon atoms.
Claim 29
Dependent Claim
24 words
A method of imaging in accordance with claim 25 wherein the cation X for the iron complex charge enhancing additive is hydrogen or sodium.
Claim 30
Dependent Claim
21 words
A method of imaging in accordance with claim 25 wherein the resin particles are comprised of styrene polymers, or mixtures thereof.
Claim 31
Dependent Claim
20 words
A method of imaging in accordance with claim 25 wherein the pigment particles for the toner composition are carbon black.
References Cited (Backward Citations)
US2775581A
Cited
US2933489A
Cited
US2871233A
Cited
US2891938A
Cited
US2891939A
Cited
US4053462A
Cited
US4314937A
Cited
US4404271A
Cited
US4562136A
Cited
US4562136B1
Cited
US4563409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |