Dual length copier lamp

Details Dual length copier lamp Dual length copier lamp

1982-03-25

1984-04-10

Chatmon, Saxfield

Electric lamp and discharge devices

Incandescent lamps

Plural filaments or glowers

313 1, 313274, 315 67, 315 68, H01K 900, H01K 118

Patent

active

044423748

ABSTRACT:
A tubular incandescent lamp for use in a fusing type lamp in a photocopy machine in which the lamp filament means is capable of operation at two different lengths on a selective basis as a function of the different lengths of paper that are to be reproduced by the copier. In one embodiment the filament means comprises a single linear filament with the contacts being taken at opposite ends of the filament for full length reproduction and along a predetermined length of the filament or shorter length of reproduction. In an alternate embodiment of the invention, two different length filaments are employed, each one selectively and mutually exclusively operated.

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patent: 4285032 (1981-08-01), Honda et al.
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