Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent
1977-10-11
1978-05-16
Pieprz, William
Typewriting machines
Typing by other than type-face or type-die
Character formation by impact
178 17C, 101 9337, 335258, 335281, B41J 700
Patent
active
040894010
ABSTRACT:
A printout device for calculators and the like includes a plurality of print segments, each encased in elastomer and embedded in a rigid block with the lower, indicia forming ends flush with the lower surface of the block. The upper end of each print segment is provided with a diametrically extending slot. Disposed above each print segment and axially aligned therewith is an electromagnetic driver element which is provided with a diametrically extending bar or key projecting from the lower surface thereof. With the electromagnet unactuated, downward pressure applied to the upper surface of the block will drive the key into the aligned slot so that no force will be transmitted to the printing segment. Actuation of the electromagnet will cause the key to be attracted to the upper extremities of the printing segment as it approaches it, causing the key to misalign with the slot and impinge on the upper surface of the printing segment. The force thus transferred drives the segment to print on a printing surface subjacent to the block.
REFERENCES:
patent: 2766686 (1956-10-01), Forenko et al.
patent: 3128694 (1964-04-01), Kittler
patent: 3528368 (1970-09-01), Oberholtzer
patent: 3848527 (1974-11-01), Nihira
patent: 3955498 (1976-05-01), Scott
patent: 4008448 (1977-02-01), Muggli
Pieprz William
Zimmerman Harris
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