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Braille Printed Dot Configuration

IP.com Disclosure Number: IPCOM000088960D
Original Publication Date: 1977-Aug-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Loeber, NC: AUTHOR

Abstract

These patterns for printed Braille dots enhance the tactile sensing characteristic.

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Braille Printed Dot Configuration

These patterns for printed Braille dots enhance the tactile sensing characteristic.

Recent experiments have shown that dot height is not the critical parameter for sensing dots with a finger tip, but rather it is the movement of the skin tissue against a raised or roughened surface. It is actually the change in the surface tension of the skin that signals a disturbance to the brain and effects recognition of the presence of a dot.

Any printed or electrophotostatically deposited symbol to be used in place of an embossed dot is enhanced by using a configuration, such as either one of these illustrated, having a multiple of discontinuities of straight line form, or ridges, that increase the tendency to disturb the skin as the finger is moved across the dot.

Such dot printing greatly facilitates the production of Braille materials since they then can be produced at high speeds on an ink-jet or electrophotographic printer directly from a data processor. The program can handle translations for various grades of Braille and, also, foreign languages.

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