Stripping fingers for copying machine
AssigneesNtn Corporation, Sumitomo Chemical Company, Limited
InventorsFuminori Satoji, Shoichi Hashimoto, Kuniaki Asai, Tadayasu Kobayashi
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Abstract
Stripping fingers for use in a copying machine, molded of a liquid crystal polyester resin composition containing a liquid crystal polyester having a flow temperature of 340.degree. C. or higher and aluminum borate whiskers. The stripping fingers have excellent heat deflection resistance, heat aging resistance, thermal shock resistance, heat load resistance, low attack on the counter roller, good shape retainability of the finger edges, and good non-stick property against toner. Coating with PFA at 330.degree. C. or higher on the stripping finger increases non-tackiness.
Claims3
Stripping fingers molded of a liquid crystal polyester resin composition comprising a liquid crystal polyester having the repeating structural units expressed by the following formulas (A), (B) and (C):
- ##STR5## wherein n is 0 or 1 and having a flow temperature of 340.degree. C. or higher, and about 5 to 50% of aluminum borate whiskers, said flow temperature being the temperature at which the melt viscosity of a resin is 48000 poise when the resin is melted by heating it at a rate of 4.degree. C./min. and extruded through a nozzle of 1 mm in inner diameter and 10 mm in length under a load of 100 kgf/cm.sup.2.
Dependencies are inferred from the claim text.