Chemical print element

Details Chemical print element Chemical print element

1980-05-05

1982-08-10

Sewell, Paul T.

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Including type-faces movable relative to type-face-carrier

400175, 400900, 400904, B41J 130

Patent

active

043435556

ABSTRACT:
Disclosed is a novel print element for a serial impact printer having a novel character set which permits the typing of text as well as chemical symbols and formulae with a small number of character elements. Closed ring structures may be formed with the character set which may be expanded to various sizes. Also disclosed is a serial impact printing system using the aforementioned printing element which automatically subscripts small numerals when the printing element is positioned without further action on the part of the typist.

REFERENCES:
patent: 3267852 (1966-08-01), Gordon
patent: 3927752 (1975-12-01), Jones et al.
patent: 3949853 (1976-04-01), Lahr et al.
patent: 4037705 (1977-07-01), Martin et al.
patent: 4074798 (1978-02-01), Berger
IBM Tech. Disc. Bulletin, vol. 16, No. 5, Oct. 1973, p. 1515.

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