Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
March 18, 2008
Patent Application Number
10721069
Date Filed
November 26, 2003
Patent Primary Examiner
Patent abstract
A toner for an image-forming apparatus and method which apparatus has a cleaning means with a cleaning blade to remove a residual toner remaining on a surface of a photoconductive member after transfer; the toner being a mixture of a colored polymer particle and an external additive. The colored polymer particle has an average circle degree in the range of 0.95-0.995 and a volume average particle diameter in the range of 3-8 μm. The toner has an absolute value of charge amount in the range of 20-70 μC/g in a toner layer formed on a developing roll when the toner is used with the image-forming apparatus.
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