Abstract: An antireflective layer comprising a plurality of functional layers having different refractive indexes, the plurality of functional layers including a lowre fractive index layer containing a fluorine-containing copolymer, wherein the low refractive index layer further contains a polymer having a polymer graft part containing a polysiloxane segment represented by the following formula [1] in a side chain of the polymer: wherein R1 and R2 may be same or different and each represents a hydrogen atom, an alkyl group or an aryl group; and p is an integer of from 10 to 500.

Abstract: A thermal fixing device for a xerographic reproducing apparatus includes a thin planar resistance heating element having a low thermal mass and a high coefficient of thermal expansion. The heating element is supported in such manner that one end thereof is free to move linearly under thermal expansion to activate a heater displacement detector comprising a pivotally mounted lever arm having a right angle configuration. One end of the lever arm is received in an opening in the heating element and the other end form a contact of a normally open switch which is adapted to be closed by pivoting of the arm due to expansion of the heating element. Closure of the switch activates a power controller to interrupt the power supply to the heating element.