Line printer for the raised-dot language of braille characters

Details Line printer for the raised-dot language of braille characters Line printer for the raised-dot language of braille characters

1978-03-29

1980-01-15

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 18, 400649, B41J 332

Patent

active

041836839

ABSTRACT:
A printing mechanism of a line printer for printing Braille characters is disclosed. The printing mechanism comprises a base member having a plurality of printing pins arranged in a row and adapted to be prevented from moving downward in response to the energization of solenoids corresponding to character patterns to be printed, a semicircular printing plate for pressing a paper against the printing pins and a printing plate driving mechanism. During every printing operation, the printing plate is rocked in a lengthwise direction by a pair of rotating disks provided at the ends of the printing plate and each including an eccentric cam groove different in phase with each other, so that the paper is successively pressed against the printing pins in the direction of their arrangement and the raised dots are produced. In another embodiment of the invention, the printing plate is operated by a pair of piston-crank mechanisms provided at the ends of the printing plate.

REFERENCES:
patent: 3280739 (1966-10-01), Hu

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