Fixing unit that supplies electricity to a lamp of an image form

Details Fixing unit that supplies electricity to a lamp of an image form Fixing unit that supplies electricity to a lamp of an image form

1998-02-20

1999-10-26

Royer, William

Electrophotography

Machine operation

Having power supply

219216, 399 90, 399330, 432 60, G03G 1500

Patent

active

059742852

ABSTRACT:
Even if a halogen lamp is thermally expanded or contracted when electricity is supplied to it, the fixing unit in accordance with the invention responds to the thermal expansion or contraction of the halogen lamp without breaking it and supplies electricity to the halogen lamp reliably. In the fixing unit, lead pins extend from both ends of the halogen lamp that is disposed in a heating roller. Each lead pin is fixed at a pin fixing portion wherein each lead pin is pinched by a top pinching portion and a bottom pinching portion of one of a pair of conductive spring members. A static friction force generated between each conductive spring member and the corresponding lead pin is set to not exceed 10 kgf, and the surface roughness of each lead pin is adjusted to not exceed Rz 3.2 .mu.m. A cone-like pin guide portion which is open at the lead pin side is formed on the top pinching portion of the conductive spring member.

REFERENCES:
patent: 4780078 (1988-10-01), Masui
patent: 5436431 (1995-07-01), Tsuji et al.
patent: 5737664 (1998-04-01), Fukuda et al.

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