Browse Prior Art Database

Express Space and Backspace

IP.com Disclosure Number: IPCOM000077391D
Original Publication Date: 1972-Jul-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Hunt, RE: AUTHOR [+3]

Abstract

Correspondence between printed output and recorded data is obtained during spacing and backspacing without actuating latches between cycles on I/O printers, having a lead screw controlled carrier and attached recording media.

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Express Space and Backspace

Correspondence between printed output and recorded data is obtained during spacing and backspacing without actuating latches between cycles on I/O printers, having a lead screw controlled carrier and attached recording media.

A space bar is provided with two depression positions, one of which is a repeat position. When depressed to the repeat position, a reed switch is picked Which results in the locking of the keyboard to prevent the keying of other characters. Also, carrier escapement is initiated and a space defined by a predetermined number of units is recorded on the media. As long as the space bar remains in the repeat position, escapement will continue without the usual latch up between cycles. At the beginning of each subsequent cycle the latch is not actuated, but the predetermined number of units is recorded on the recording media. When the space bar is released, the keyboard will not be free and escapement will not terminate until the carrier has traversed the predetermined number of units. The above function is also performed with the backspace key, which also has two depression positions.

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