Ceramic guide rails for photographic film and paper and polymeri

Compositions: ceramic – Ceramic compositions – Refractory

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501104, 396956FOR, 396957FOR, 396958FOR, C04B 3548

Patent

active

061178055

ABSTRACT:
Ceramic guide rails for guiding photographic film into a perforating machine are disclosed. The ceramic includes zirconium oxide and yttria in a molar ratio of yttria to zirconium oxide of from about 3:97 to about 5:95. The zirconium oxide is essentially the tetragonal phase crystal grain. In an alternate embodiment of the present invention the outer surface of the zirconium oxide is altered to the cubic phase crystal grain or the monoclinic crystal grain.

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Japanese Patent Abstract--"Feed Device for Machine Tool", Kobayashi et al., JP 61-230835 (Oct. 15, 1986). See abstract.
Japanese Patent Abstract--"IC Guide Rail for IC Handler", Oomomo et al., JP 56-78129 (Jun. 26, 1981). See abstract.

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