Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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Filing date
Publication date
Application filed by Ricoh Co LtdfiledCriticalRicoh Co Ltd
Priority to JP7448977ApriorityCriticalpatent/JPS549929A/en
Publication of JPS549929ApublicationCriticalpatent/JPS549929A/en
PURPOSE: To enable deterioration of color reproductivity due to the impure components of 3 primary color toners and deterioration of purity of a black image in a 2-color image to be corrected simply, by using 2 kinds of specified colored toners for color superposition type multicolor copying method.