Braille printing plate

Details Braille printing plate Braille printing plate

1987-12-03

1989-08-22

Pieprz, William

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101368, 1014011, 434114, B41J 332, B41M 316

Patent

active

048590940

ABSTRACT:
A braille printing plate includes a male part formed of a board on which braille letters are formed by a braillewriter and balls loaded in braille-forming recesses appearing on the rear side of the board. The male part is alternatively formed by loading balls in recesses on a rear side of a braille-printed sheet formed using a braille printer and then piecing the same to a master board. A female part is formed of a board which has been pressed against raised portions constituting the braille letters on the male part. The male and female parts are binded at lateral edges thereof so as to be foldable at the binding.

REFERENCES:
patent: 2616198 (1952-11-01), Sewell
patent: 2793585 (1957-05-01), Granitsas
patent: 4551102 (1985-11-01), Meinzer
patent: 4571190 (1986-02-01), Zagler et al.
patent: 4650352 (1987-03-01), Eriksson
Franklin, "High Speed Embossing of Braille Masters" IBM Tech Disclosure Bulletin, vol. 11, No. 10, pp. 1296-1297, 3/69.

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