Browse Prior Art Database

Key Entry/Composer/Editor Using Photoresistive Material

IP.com Disclosure Number: IPCOM000085547D
Original Publication Date: 1976-Apr-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Durbeck, RC: AUTHOR [+2]

Abstract

A device is described comprising a one line display that can be used in a composer/editor mode, in conjunction with a typewriter or terminal-type device.

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Key Entry/Composer/Editor Using Photoresistive Material

A device is described comprising a one line display that can be used in a composer/editor mode, in conjunction with a typewriter or terminal-type device.

The display device is fabricated with a separate segment for each print position in a line. The display device has suitable dimensions for a one line display and is attached to the typewriter above the keyboard in a position suitable for viewing.

The display device utilizes a material with high sensitivity which responds to an optical input, to produce a visible image that can be enhanced by the application of a potential of one polarity and erased by the application of a potential of the opposite polarity.

A typewriter of the type which uses a character ball on a transport mechanism may be used and a character wheel or disk is added to the transport mechanism. The character disk is synchronized with the typewriter mechanism, so that a character aperture of the selected character is moved in position to be illuminated by a source of ultraviolet radiation, such as a low-power mercury arc. The resulting optical input, in the form of the selected character, is relayed to the segment of the display device corresponding to the transverse position of the type ball.

The operation of the system would be to place the type ball into a compose mode so that the type ball would not impact the ribbon to print, but would still allow the type ball to translate across the p...