US5300390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid toner composition
Assignee: HP Indigo BV
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Filing: 1992-02-18
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Granted: 1994-04-05
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Expires: 2012-02-18
Abstract
Abstract An improved liquid toner composition for developing latent electrostatic images comprising toner particles, a release agent and a nonpolar dispersant liquid. An agent causing an apparent increase in the cohesivity of the toner particles may be included in the toner composition, or such agent may be used independently of the release agent in the toner composition.
Inventors
- 👤 Benzion Landa
- 👤 Yaacov Almog
- 👤 Peretz Ben-Avraham
- 👤 Moshe Levanon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:51
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/12; G03G9/13; G03G9/132
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
30 words
A method of preparing a liquid toner composition for development of latent electrostatic images comprising: adding a polymerized ground gel to a dispersion of toner particles in a liquid dispersant.
Claim 2
Independent Claim
30 words
A method of preparing a liquid toner composition for development of latent electrostatic images comprising: adding a polymerized ground gel to a dispersion of toner particles in a liquid dispersant.
Claim 3
Dependent Claim
25 words
The method of claim 1 further comprising: adding an agent causing an apparent increase in the cohesivity of said toner particles to said toner concentrate.
Claim 4
Dependent Claim
33 words
The method of claim 1 wherein said gel comprises at least one silicone material, operative to facilitate release of a developed image from an image forming surface which carries the latent electrostatic image.
Claim 5
Dependent Claim
22 words
The method of claim 3 wherein said silicone material is a polymeric siloxyane having a repeating silicon-oxygen linkages in the polymer backbone.
Claim 6
Dependent Claim
29 words
The method of claim 3 wherein said silicone material is present in the range of up to about 30% by weight based on the weight of the toner particles.
Claim 7
Dependent Claim
13 words
The method of claim 5 wherein said silicone material is in gel form.
Claim 8
Dependent Claim
22 words
The method of claim 1 wherein said ground gel is operative to cause an apparent increase in cohesivity of the toner particles.
Claim 9
Dependent Claim
22 words
The method of claim 2 wherein said agent causing an apparent increase in cohesivity of said toner particles is a ground gel.
Claim 10
Dependent Claim
14 words
The method of claim 8 wherein the ground gel is a thermoplastic polyamide resin.
Claim 11
Dependent Claim
23 words
The method of claim 9 wherein said agent is present in the range of up to 30% by weight of said toner particles.
Claim 12
Dependent Claim
58 words
The method of claim 2 wherein the proportions of said ground gel on the basis of said toner particles is up to about 30% by weight percent and the proportion of said agent causing an apparent increase in the cohesivity of said toner particles on the basis of said toner particles is up to about 30% by weight.
Claim 13
Dependent Claim
20 words
A developed electrostatic image that has been developed with a toner composition prepared according to the method of claim 1.
Claim 14
Dependent Claim
20 words
A developed electrostatic image that has been developed with a toner composition prepared according to the method of claim 2.
Claim 15
Dependent Claim
20 words
A carrier sheet comprising a toner image produced with a toner composition prepared according to the method of claim 1.
Claim 16
Dependent Claim
23 words
A carrier sheet comprising a toner image produced with a toner composition with improved release prepared according to the method of claim 2.
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) | 1997-04-04 | 1997-10-04 | 1998-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-04 | 2001-10-04 | 2002-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-04 | 2005-10-04 | 2006-04-05 | $7700.00 | Window Closed / Lapsed |