Patent Document ID: 4600320
Application ID: 06675024

Base Claim:
1. A printer for producing both standard printed characters and braille characters on a recording medium, comprising: a platen having a generally cylindrical exterior recording medium supporting surface, said platen being rotatable about its central axis, said surface having alternating solid and perforated regions, said regions extending along the surface of said platen in a direction parallel to said central axis, said solid portions serving as a backing surface for said recording medium as said standard printed characters are printed, said perforated portions comprising holes formed in six-dot braille patterns; a braille printing actuation device located in the interior of said cylindrical platen, said actuation device comprising a base housing, a plurality of embossing pins and a plurality of solenoids housed in said base housing, one solenoid being furnished for each pin, each solenoid, upon actuation, serving to drive its associated pin outwardly through one of said holes formed in said platen so as to form braille characters in said record media at the same time that a corresponding standard character is being printed on said sheet adjacent said braille character.

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Claim 5:
5. A printer as claimed in claim 1 wherein said braille printing actuating device is mounted by an axial rod and bolts within said platen and can be easily removable by removing said bolts.