US4942410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toner receptive coating
Assignee: Dennison Manufacturing Co
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Filing: 1989-07-06
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Granted: 1990-07-17
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Expires: 2009-07-06
Abstract
Abstract The invention comprises a toner receptive coating for substrates, typically paper, for use in conventional printers such as ion deposition printers and photostatic copiers. The coating on paper or polymeric film improves the print density and durability of text or images transferred thereto from printers or copiers, particularly those which employ dry magnetic toner. The coating eliminates the need to use heat fusing to fix the transferred toned image to the substrate. The coating is composed of pressure sensitive polymeric binder material and particulate fillers. The polymeric binder has a glass transition temperature less than 20° C. preferably a glass transition temperature between -10° C. and +10° C. The fillers include a polymeric filler, typically a polyethylene wax or a polyethylene/polytetrafluoroethylene wax mixture and a mineral filler, typically particulate silicon dioxide. The receptive coating also improves the smudge resistance of transferred toned images, particularly when employing dry magnetic toner.
Inventors
- 👤 John J. Fitch
- 👤 Tim Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:55
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/14; G03G13/16; G03G7/00; G03G7/0006; G03G7/002; G03G7/0026; G03G7/004
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
151 words
A toner receptive coating for paper substrates and polymeric film substrates for use in receiving pressure transferred toned images from printers and electrostatic copiers employing dry magnetic toners, said toner receptive coating comprising: a blend of particulate fillers comprising particulate mineral filler and a particulate polymeric wax filler, and a polymeric binder for the blend of particulate fillers, said particulate mineral filler having the property of securing said dry toner particles and restraining their mobility, and said mineral filler reducing coating tack to prevent the coating from sticking to the underside of the substrate if the substrate is unwound from a roll, and said particulate polymer wax filler having the property of imparting lubricity to the coating so that the dry magnetic toned images transferred to the coating will not substantially rub off onto adjacent portions of the coating on the substrate if the transferred toned image is rubbed or abraded.
Claim 2
Dependent Claim
151 words
A toner receptive coating for paper substrates and polymeric film substrates for use in receiving pressure transferred toned images from printers and electrostatic copiers employing dry magnetic toners, said toner receptive coating comprising: a blend of particulate fillers comprising particulate mineral filler and a particulate polymeric wax filler, and a polymeric binder for the blend of particulate fillers, said particulate mineral filler having the property of securing said dry toner particles and restraining their mobility, and said mineral filler reducing coating tack to prevent the coating from sticking to the underside of the substrate if the substrate is unwound from a roll, and said particulate polymer wax filler having the property of imparting lubricity to the coating so that the dry magnetic toned images transferred to the coating will not substantially rub off onto adjacent portions of the coating on the substrate if the transferred toned image is rubbed or abraded.
Claim 3
Dependent Claim
47 words
A toner receptive coating as in claim 1 wherein the polymeric binder has a glass transition temperature below about 20° C., said polymeric binder promoting adherence of the transferred toner particles to the receptive coating and said binder promoting adhesion of the particulate fillers to said binder.
Claim 4
Dependent Claim
24 words
A toner receptive coating as in claim 2 wherein the polymeric binder has a glass transition temperature between about -10° C. to 10° C.
Claim 5
Dependent Claim
24 words
A toner receptive coating as in claim 2 wherein said coating avoids the need for heat fusing the toned transferred image to the substrate.
Claim 6
Dependent Claim
46 words
A toner receptive coating as in claim 2 wherein the coating is formed by applying it to the substrate in the form of a dispersion of said particulate fillers and polymeric binder in a liquid medium and hence subsequently evaporating the liquid medium by convective heat.
Claim 7
Dependent Claim
46 words
A toner receptive coating as in claim 4 wherein the coating has the property that it permits transfer of toned images from a dielectric imaging cylinder to the substrate coated with said receptive coating wherein said coated substrate is exposed to ambient temperatures during said transfer.
Claim 8
Dependent Claim
37 words
A toner receptive coating as in claim 1 wherein the coating is translucent with sufficient contact clarity so that printed matter on the substrate will still be legible if the coating is applied over said printed matter.
Claim 9
Dependent Claim
16 words
A toner receptive coating as in claim 1 wherein the particulate mineral filler comprises silicon dioxide.
Claim 10
Dependent Claim
15 words
A toner receptive coating as in claim 1 wherein the polymeric filler comprises polyethylene wax.
Claim 11
Dependent Claim
20 words
A toner receptive coating as in claim 1 wherein the polymeric filler comprises a blend of polyethylene wax and polytetrafluoroethylene.
Claim 12
Dependent Claim
16 words
A toner receptive coating as in claim 2 wherein the polymeric binder comprises vinyl acrylic copolymer.
Claim 13
Dependent Claim
16 words
A toner receptive coating as in claim 2 wherein the polymeric binder comprises ethylene vinyl chloride.
Claim 14
Dependent Claim
27 words
A toner receptive coating as in claim 1 for paper substrates for use in receiving pressure transferred toned images from ion deposition printers employing dry magnetic toner.
Claim 15
Independent Claim
165 words
A method of transferring a toned image from a dielectric imaging cylinder of an ion deposition printer to a paper substrate wherein dry magnetic toner is employed as the toning medium, comprising the steps of: (a) applying a toner receptive coating to the paper substrate to form a coated paper substrate, (b) passing the coated paper between a pressure nip roller and a dielectric imaging cylinder having a toned image thereon, the pressure nip roller operating at a temperature below the softening temperature of the toner whereupon the toned image is transferred to the coated paper substrate, (c) not exposing the transferred toned image on the paper substrate to a step of heat fusing, said receptive coating comprising a blend of particulate mineral filler and particulate polymeric wax filler, said receptive coating having the property of causing sufficient adherence of the transferred toned image thereto and sufficient smudge resistance, thus obviating the need to subject the transferred toned image to a step of heat fusing.
Claim 16
Independent Claim
165 words
A method of transferring a toned image from a dielectric imaging cylinder of an ion deposition printer to a paper substrate wherein dry magnetic toner is employed as the toning medium, comprising the steps of: (a) applying a toner receptive coating to the paper substrate to form a coated paper substrate, (b) passing the coated paper between a pressure nip roller and a dielectric imaging cylinder having a toned image thereon, the pressure nip roller operating at a temperature below the softening temperature of the toner whereupon the toned image is transferred to the coated paper substrate, (c) not exposing the transferred toned image on the paper substrate to a step of heat fusing, said receptive coating comprising a blend of particulate mineral filler and particulate polymeric wax filler, said receptive coating having the property of causing sufficient adherence of the transferred toned image thereto and sufficient smudge resistance, thus obviating the need to subject the transferred toned image to a step of heat fusing.
Claim 17
Dependent Claim
51 words
A method as in claim 14 wherein the receptive coating further comprises a polymeric binder having a glass transition temperature below about 20° C., said polymeric binder promoting adherence of the transferred toner particles to the receptive coating and said binder further promoting adhesion of the particulate fillers to the binder.
Claim 18
Dependent Claim
22 words
A method as in claim 15 wherein the polymeric binder has a glass transition temperature between about -10° C. and 10° C.
Claim 19
Dependent Claim
35 words
A method as in claim 15 wherein the coating is translucent with sufficient contact clarity so that printed matter on the substrate will still be legible if the coating is applied over said printed matter.
Claim 20
Dependent Claim
14 words
A method as in claim 15 wherein the particulate mineral filler comprises silicon dioxide.
Claim 21
Dependent Claim
13 words
A method as in claim 15 wherein the polymeric filler comprises polyethylene wax.
Claim 22
Dependent Claim
14 words
A method as in claim 15 wherein the polymeric binder comprises vinyl acrylic copolymer.
Claim 23
Dependent Claim
18 words
A method as in claim 15 wherein the polymeric filler comprises a blend of polyethylene wax and polytetrafluoroethylene.
Claim 24
Dependent Claim
14 words
A method as in claim 15 wherein the polymeric binder comprises ethylene vinyl chloride.
Claim 25
Dependent Claim
104 words
A toner receptive coating for paper substrates and polymeric film substrates for use in receiving transferred toned images from printers and electrostatic copiers employing dry magnetic toners, said toner receptive coating comprising: a polymeric binder matrix; particulate material therein for securing said dry toner particles and restraining their mobility; and particulate polymer wax filler within said binder matrix; said polymer filler having the property of imparting lubricity to the coating so that the dry magnetic toned images transferred to the coating will not substantially rub off onto adjacent portions of the coating on the substrate if the transferred toned image is rubbed or abraded.
Claim 26
Dependent Claim
104 words
A toner receptive coating for paper substrates and polymeric film substrates for use in receiving transferred toned images from printers and electrostatic copiers employing dry magnetic toners, said toner receptive coating comprising: a polymeric binder matrix; particulate material therein for securing said dry toner particles and restraining their mobility; and particulate polymer wax filler within said binder matrix; said polymer filler having the property of imparting lubricity to the coating so that the dry magnetic toned images transferred to the coating will not substantially rub off onto adjacent portions of the coating on the substrate if the transferred toned image is rubbed or abraded.
References Cited (Backward Citations)
US4859550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-16 | 1994-01-15 | 1994-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-16 | 1998-01-15 | 1998-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-16 | 2002-01-15 | 2002-07-17 | $7700.00 | Window Closed / Lapsed |