The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 1988
Filed:
Nov. 20, 1986
Satoru Yoshioka, Kamakura, JP;
Ricoh Company Ltd., , JP;
Abstract
An ink ribbon cartridge for use in a typewriter, printer and the like includes a driving mechanism to move a strip of ink ribbon out of the cartridge through a supply port and again into the cartridge through a take-up port and a deterrent mechanism to impart a back tension to the ink ribbon when pulled toward the take-up port from the supply port. The deterrent mechanism includes a guide post and a leaf spring whose forward end is pressed against the guide post with the ink ribbon sandwiched therebetween. The forward end of the leaf spring is provided with oppositely extending side projections which are inserted into the relief holes provided in the top and bottom walls of the cartridge. More preferably, the guide post extends from the bottom wall and extends into the relief hole of the top wall.