Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1997-03-04
1999-05-11
Chapman, Mark
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
4283055, 4283155, 428446, 4284111, B32B3/06
Patent
active
059026731
ABSTRACT:
A toner image receiver sheet for electrophotography comprises a substantially opaque substrate of microporous material and, disposed on at least one surface of the substrate, a substantially water-impervious toner image-receiving layer comprising a thermoplastic organic polymer. The microporous material of the substrate comprises a matrix of substantially water-insoluble organic polymer in which is distributed finely divided substantially water-insoluble filler particles that are at least 50 weight percent siliceous particles and constitute about 40 to 90 weight percent of the microporous material. A network of interconnecting pores communicating throughout the microporous material constitutes about 35 to 95 volume percent of the microporous material. On at least one surface of the substrate is disposed a substantially water-impervious toner image-receiving layer comprising a thermoplastic organic polymer. The toner image receiver sheet is substantially impervious to water and has a volume resistivity of about 1.times.10.sup.8 ohm-cm to 1.times.10.sup.13 ohm-cm, preferably about 1.times.10.sup.10 ohm-cm to 1.times.10.sup.12 ohm-cm. In a process for forming the just-described toner image receiver sheet, the toner image-receiving layer is preferably applied on at least one surface of the substrate using a water-dispersible composition of a thermoplastic organic polymer.
REFERENCES:
patent: 4795676 (1989-01-01), Maekawa et al.
patent: 4927802 (1990-05-01), Leatherman
patent: 5055371 (1991-10-01), Lee et al.
patent: 5302439 (1994-04-01), Malhotra
patent: 5451458 (1995-09-01), Malhotra
Bugner Douglas E.
Missell Gregory E.
Chapman Mark
Eastman Kodak Company
Everett John R.
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