Printing apparatus for accentuating the outline portion of a pri

Details Printing apparatus for accentuating the outline portion of a pri Printing apparatus for accentuating the outline portion of a pri

1987-03-19

1988-09-13

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

340730, 400120, B41J 312

Patent

active

047705523

ABSTRACT:
A printing device comprising a character generator storing items of character data, each constituted by a plurality of printing dot data, a first memory for storing the character data read out from the character generator, a printer, and a control unit for driving the printer such that the printer prints the characters represented by the character data, accentuating the outline portions of each character. The printing device further comprises a second memory. The control unit derives, from the character data stored in the first memory, outline-image data representing the outline portions of the characters represented by the character data, and writes the outline-image data into the second memory. It drives the printer in accordance with the character data stored in the first memory and also with the outline-image data stored in the second memory, thereby printing, with a first printing energy, those dots specified by both the character data and the outline-image data, and printing, with a second printing energy, less than the first printing energy, those dots specified by the outline-image data.

REFERENCES:
patent: 3744611 (1973-07-01), Montanari
patent: 3918039 (1975-11-01), Clark
patent: 4195937 (1980-04-01), Baran
patent: 4590484 (1986-05-01), Matsushita

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