Selective fusing apparatus

Details Selective fusing apparatus Selective fusing apparatus

1975-03-10

1976-06-22

Albritton, C. L.

Electric heating

Heating devices

Combined with diverse-type art device

219388, 219469, 250317, 432 60, 432228, H05B 100, G03G 1520

Patent

active

039653323

ABSTRACT:
Apparatus of the type which fuses toner images onto support material by heat and pressure. A heated fuser roll includes a cylindrical member made of quartz which transmits radiant energy from a lamp source located on the interior of the cylindrical member. The cylindrical member is covered with a layer made of elastomeric material which also transmits radiant energy. A first reflector member is positioned adjacent the lamp source for focusing the radiant energy along a heat transfer zone segment of the elastomeric layer. Positioned adjacent to the heat transfer zone is a second reflector member to reflect the energy back to the surface of the layer. Tack and detack corotrons tack sheets bearing powder images to be fused to the surface of the elastomeric layer to selectively heat the powder images. A pressure roll forms a nip with the layer at the exit of the heat transfer zone to apply heat and pressure thereat. A blower controls the exit temperature of the exit of the nip to effect fusing of the images without objectionable background.

REFERENCES:
patent: 3371915 (1968-03-01), Kawamura et al.
patent: 3452181 (1969-06-01), Stryjewski
patent: 3465122 (1969-09-01), Kolless
patent: 3475589 (1969-10-01), Bartusek et al.
patent: 3679302 (1972-07-01), Ludwig
patent: 3811821 (1974-05-01), Ariyama et al.
patent: 3832065 (1974-08-01), Sullivan
patent: 3861860 (1975-01-01), Thettu et al.

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