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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co LtdfiledCriticalRicoh Co Ltd
Priority to JP6798477ApriorityCriticalpatent/JPS543536A/en
Publication of JPS543536ApublicationCriticalpatent/JPS543536A/en
PURPOSE: To let colored toner on the black image cause heat sublimation and obtain good quality dichromatic copies without degrading the purity of the black portions by making use of the temperature differences produced owing to differences in endothermic rate between the black image portions and other color image portions.