Label printer with selective memory update

Details Label printer with selective memory update Label printer with selective memory update

1992-01-29

1994-11-01

Wiecking, David A.

Typewriting machines

Including control of format and selection of type-face by...

Separate interrelated programs

400 63, B41J 530

Patent

active

053602773

ABSTRACT:
A dot printer receives coded printing information, and expands it into dots in an image memory. When expanding the information into dots, the printing contents of the previous printed document and the new printing document are compared as to their coded information. Only the changed portions therebetween are rewritten in the image memory. As a result, the printing efficiency with respect to multiple documents of the same type in which only small portions thereof change is improved.

REFERENCES:
patent: 4677551 (1987-06-01), Suganuma
patent: 4826333 (1989-05-01), Tanaka
patent: 4944614 (1990-07-01), Tanaka
patent: 4988221 (1991-01-01), Shibayama
patent: 5104245 (1992-04-01), Oguri
patent: 5156468 (1992-10-01), Uematsu

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