Printing apparatus and information processing apparatus using th

Details Printing apparatus and information processing apparatus using th Printing apparatus and information processing apparatus using th

1991-05-16

1992-09-29

Evans, Arthur G.

395106, G06K 1500

Patent

active

051519739

ABSTRACT:
A main control unit for controlling a dot printing element in a laser beam printer has a first control means for controlling the dot printing element so as to print a predetermined dot size in accordance with an existence of a dot signal in an image information signal. The main control unit has a second control means and a control selection means. The second control means controls the dot printing element so as to vary a size of the dot of a dither matrix. The control selection means operates selectively the first control means and the second control means. A gradation data is transmitted to the printer without conversion of a dither matrix data. The printer can print an image in response to in either cases of a character pattern dot data signal and a gradation data signal. The printer has a gradation signal on an interference, a gradation converting means and a laser modulating means. The printer can connect in either cases of an existence state and a non-existence state of the gradation signal.

REFERENCES:
patent: 4491875 (1985-01-01), Kawamura
patent: 4516135 (1985-05-01), Todoh

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