CALCIUM TITANATE POWDER, METHOD FOR PRODUCING SAME AND EXTERNAL TONER ADDITIVE FOR ELECTROPHOTOGRAPHY

A powder which is composed of particles that are mainly composed of calcium titanate having a perovskite crystal structure, and primary particles of which have a generally spherical shape and an average particle diameter within the range of from 20 nm to 100 nm (inclusive). This powder is produced b...

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Bibliographische Detailangaben
Hauptverfasser:	KOGA, Toshiyuki, TANAKA, Takayasu, YOSHIMI, Tomoko, SEKI, Toshimasa, MINO, Wataru
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CINEMATOGRAPHY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY INORGANIC CHEMISTRY MAGNETOGRAPHY METALLURGY PHOTOGRAPHY PHYSICS
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Beschreibung
Zusammenfassung:	A powder which is composed of particles that are mainly composed of calcium titanate having a perovskite crystal structure, and primary particles of which have a generally spherical shape and an average particle diameter within the range of from 20 nm to 100 nm (inclusive). This powder is produced by a method which comprises: the production of calcium titanate by subjecting a mixed liquid that contains a sugar, an alkali, a water-soluble compound containing calcium, and a compound which is obtained by deflocculating a hydrolysis poroduct of a titanium compound with use of a monobasic acid to a high-pressure liquid-phase reaction that includes heating to a temperature of from 100° C. to 270° C. (inclusive),; and a subsequent calcium removal treatment.