Typewriting machines – Including interposed inking device for record-medium – Ribbon – per se
Patent
1988-02-10
1990-02-06
Pieprz, William
Typewriting machines
Including interposed inking device for record-medium
Ribbon, per se
400120, 428195, 4283213, B41J 3100
Patent
active
048984868
ABSTRACT:
A thermocarbon ribbon is formed by emulsifying two mutually incompatible thermoplastic polymers melting at heat-transfer temperatures of a wax. The emulsion containing a pigment is applied to a ribbon support and the solvent is evaporated. The ribbon has multi-strike capabilities and improved sharpness of transfer to rough paper resulting from the presence in the solid continuous phase of beads or microspheres of a dispersed phase, both phases being formed by the polymers.
REFERENCES:
patent: 2739909 (1956-03-01), Rosenthal
patent: 4515489 (1985-05-01), Kohle et al.
patent: 4612243 (1986-09-01), Shimayahi et al.
patent: 4707707 (1987-11-01), Ohno
patent: 4774128 (1986-09-01), Koshizuka et al.
patent: 4783360 (1988-11-01), Katayama et al.
patent: 4784905 (1988-11-01), Suzuki et al.
Krauter Heinrich
Mecke Norbert
Dubno Herbert
McDaniel James R.
Pelikan Aktiengesellschaft
Pieprz William
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