Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1975-04-07
1977-09-06
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
73351, 219505, 219530, 432 60, H05B 102
Patent
active
040469905
ABSTRACT:
Apparatus for controlling the surface temperature of a fusing roller of the type having a heat-insulative, release surface over a thermally conductive core, by (1) internally heating the core, (2) sensing the temperature of the core rather than of the external release surface, (3) providing different temperature control settings for the core sensor and (4) selectively switching the internal heating means into operative relation with a predetermined control setting in anticipation of changes in heat loss from the external surface. The core of the fusing roll is thereby controlled toward the different temperature control settings, one at the "copy run" condition, another at the "idle" condition, and in some instances the same control setting is used for the "copy run" and the "idle" condition. Such core temperature settings are selected to create the particular temperature differentials across the heat-insulative roll cover that are necessary to counteract the different heat losses which occur during running and idling conditions in order to maintain the proper external release surface fusing temperature.
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patent: 2870312 (1959-01-01), Westervelt
patent: 3189729 (1965-06-01), Lusebrink
patent: 3398259 (1968-08-01), Tregay et al.
patent: 3553431 (1971-01-01), Petersen
patent: 3612830 (1971-10-01), Dienes
patent: 3666922 (1972-05-01), Leitner et al.
patent: 3690176 (1972-09-01), Connolly et al.
patent: 3735092 (1973-05-01), Traister
patent: 3745304 (1973-07-01), Hutner
patent: 3825725 (1974-07-01), Leitner et al.
Eastman Kodak Company
Mayewsky Volodymyr Y.
Sales Milton S.
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