Dot matrix printing method and printer therefor

Details Dot matrix printing method and printer therefor Dot matrix printing method and printer therefor

1982-03-02

1985-10-22

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358280, 358263, H04N 122

Patent

active

045492220

ABSTRACT:
The method enables images recorded with different definitions to be printed by the same printer, and the information to be printed with maximum print definitions. For this purpose, the print definitions (dots per mm) is a common multiple of the possible recording definitions. The information to be printed is extracted from a signal generator with a frequency corresponding to the recording definition, and is repeated in accordance with the multiple. For example with a print definition of 24 dots/mm defined by a row and column grid L1, L2, etc., C1, C2, etc., a character definition of 8 dots/mm is obtained by printing each dot three times in each row and repeating each row a further two times. The printer, which is therefor suitable for various purposes, for example as a word processor printer and as a facsimile printer, repeatedly prints each dot, along the horizontal and/or along the vertical, for a number of times corresponding to the multiple, to provide a line continuity and an improved image resolution. The printer used may be of electrophotographic type, with the printing element provided by a laser generator.

REFERENCES:
patent: 4135212 (1979-01-01), Pugsley et al.
patent: 4151562 (1979-04-01), Tregay
patent: 4280144 (1981-07-01), Bacon

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