Braille Printer Capable of Being Easily Monitored by a Blind Typist
Original Publication Date: 1987-Dec-01
Included in the Prior Art Database: 2005-Feb-02
A Braille printer prints Braille characters on standard Braille paper so that a blind typist can monitor what has been printed while the paper is still in the printer. A printhead 1 (Fig. 1) is mounted on a carrier 2, which is moved along rails 3 by a lead screw 4. The printhead 1 has a magnetic hammer 5 activated by a solenoid. A platen 6 has balls 7 arranged thereon in a single horizontal row so that activation of the solenoid of the hammer 5 causes a cupped tip 8 (Fig. 2) of the hammer 5 to engage a sheet 9 of paper to force the sheet 9 of paper over the ball 7 with which the cupped tip 8 of the hammer 5 is aligned when the solenoid of the hammer 5 is activated. This embosses a single dot 10 on the sheet 9 of paper.