| 摘要 |
PROBLEM TO BE SOLVED: To provide a toner for positive charge image development, the toner having high charging stability for a long time. SOLUTION: The toner for positive charge image development contains a ferrocene derivative expressed by general formula (I). In formula (I), R<SB>1</SB>and R<SB>2</SB>are same or different groups, each representing a hydrogen atom, halogen atom, a straight-chain or branched alkyl group, aryl group, alkenyl group, acyl group, nitro group or amino group, wherein the alkyl group, aryl group, alkenyl group, acyl group and amino group may have a substituent; and m and n represent integers of 1 to 3, however, if two or three R<SB>1</SB>or R<SB>2</SB>are substituted, each R<SB>1</SB>or each R<SB>2</SB>may be a different group from others. COPYRIGHT: (C)2007,JPO&INPIT
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