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 JP16939480ApriorityCriticalpatent/JPS5794048A/ja
Priority to US06/256,162prioritypatent/US4618672A/en
Priority to DE3117076Aprioritypatent/DE3117076C2/de
Priority to GB8113374Aprioritypatent/GB2076007B/en
Publication of JPS5794048ApublicationCriticalpatent/JPS5794048A/ja
Publication of JPS64424B2publicationCriticalpatent/JPS64424B2/ja