Printing apparatus including error correction and memory means,

Details Printing apparatus including error correction and memory means, Printing apparatus including error correction and memory means,

1991-01-17

1992-04-28

Burr, Edgar S.

Typewriting machines

For typing or forming continuous or discontinuous line

400 17, 400 20, 400 65, B41J 328

Patent

active

051082039

ABSTRACT:
A printing apparatus includes a print wheel having a vertical lien character, a minus symbol character, and an underline symbol character. A first control moves a carriage on which the print wheel is mounted at one of two pitches and a second control advances a printing paper for receiving printing at one of two pitches in a direction generally perpendicular to the direction of movement of the carriage. Respective keys select the vertical line character and underline character for printing and the printing and paper-advancing pitches. One key signals repeat actuation of either the key selecting the vertical line character or the underline character and a memory stores actuation of the key for selecting the vertical line character. Printing of a vertical line character and advancement of paper is achieved by a control in response to actuation of the repeat signaling key, if the memory stores actuation of the vertical character key. Another control clears the memory in response to operation of any key other than the repeat signaling key.

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