Typewriting machines – Carriage or carriage-moving or movement-regulating mechanism – Carriage-return mechanism
Patent
1978-05-22
1981-05-05
Wright, Jr., Ernest T.
Typewriting machines
Carriage or carriage-moving or movement-regulating mechanism
Carriage-return mechanism
400279, B41J 2518
Patent
active
042655544
ABSTRACT:
Described herein is a feature and the electronics and logic necessary to implement a paragraph indent feature on an electronic typewriter which is improved and more advantageous than previous routines which accomplished similar results. Paragraph Indent is beneficial to the operator in that it automatically positions the printing carrier at an indented level for setting off typed material so that the left edge of the indented material does not extend to the normal left margin. The typewriter under electronic control stores in memory, upon an appropriate command, a temporary left margin to which the carrier will return when the typewriter is operating under the paragraph indent mode. The operator may enter the Paragraph Indent mode from the keyboard by keying an alternate function or code signal together with a tabulation or tab code signal. This causes the electronics to control the typewriter so as to move the print point to the next tab stop and thereafter until countercommanded will return the carrier to that indented line position on all subsequent carrier returns.
REFERENCES:
patent: 3579193 (1971-05-01), Bernier
patent: 3837459 (1974-09-01), Martin
patent: 4087852 (1978-05-01), Campbell et al.
IBM Technical Disclosure Bulletin, "Variable Left Margin with Counter Control", Hobgood et al, vol. 10, No. 2, Jul. 1967, pp. 109-110.
Clancy Douglas E.
Johnson Carl F.
McCray William R.
Neal Danny M.
International Business Machines - Corporation
Letson Laurence R.
Wright, Jr. Ernest T.
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