Multi-sheet assembly using autogenous coating

Coating processes – Nonuniform coating

Patent

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101DIG1, 229 68R, 229 72, 229 75, 282 275, 427150, 427151, 427152, 427153, 427261, 427288, 428195, 428211, 4283208, 428537, 428914, B41M 516, B41M 522

Patent

active

044253869

ABSTRACT:
A multi-ply business form comprising a plurality of sheets in superposed relationship wherein the top sheet comprises a support bearing a localized coating comprising both microscopic pressure rupturable capsules containing a chromogenic material, and an electron acceptor material. At least one underlying sheet can comprise a support bearing a second localized autogenous coating comprising chromogen-containing microscopic pressure rupturable capsules and an electron acceptor material on its upper surface wherein the localized autogenous coatings are non-coextensive.

REFERENCES:
patent: 3914511 (1975-10-01), Vassiliades
patent: 4012554 (1977-03-01), Miller et al.
patent: 4112138 (1978-09-01), Davis et al.
patent: 4172605 (1979-10-01), Welsch et al.
patent: 4199174 (1980-04-01), Sornberger

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