Optical typewriter

Details Optical typewriter Optical typewriter

1975-09-08

1978-10-03

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

178 15, 346 76L, B41J 320

Patent

active

041181280

ABSTRACT:
A typewriter for writing with a light beam on a photo-sensitive paper includes a translatable typewriter carriage having a sight carried fixedly to a frame of the typewriter defining a region on which an indicia is being written. A light source is carried on a servo-driven trolley along an arcuate track having a center of curvature at the sight portion. A perforate letter template is located along a coaxial arc between the track and the carriage. In response to the depression of a key on a keyboard, for selecting a letter to be typed, the trolley is positioned along the track so that the light therefrom passes through a selected indicia on the template and then to the sight defined region of the paper.

REFERENCES:
patent: 2929294 (1960-03-01), Kardas et al.
patent: 3287736 (1966-11-01), Germer
patent: 3570380 (1971-03-01), Kamenstein
patent: 3842195 (1974-10-01), Takahashi et al.
patent: 3907089 (1975-09-01), Montoya

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