Ribbon feed device for office machines

B - Operations – Transporting – 41 – J

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197/110

B41J 33/14 (2006.01)

Patent

CA 1047430

TITLE OF THE INVENTION RIBBON FEED DEVICE FOR OFFICE MACHINES INVENTOR GIUSEPPE ODDICINI, Via Galluzia 1, Banchette (Turin) Italy ABSTRACT OF THE DISCLOSURE A ribbon feed device for a ribbon in a cartridge, comprises a support for the cartridge with spools therein engaged on hubs of the device, two guides for guiding a length of ribbon looped out of the cartridge, and a single control member operable from a normal posi- tion to an operated position to shift the guides transversely of the length of the ribbon to a position of greater accessibility for fitting the ribbon therein. The ribbon feed device is capable of ac- cepting either an inked ribbon cartridge or a carbon coated cartridge and includes a pair of sensing levers urged by a spring adapted to sense the inked ribbon wound on the two spools respectively through apertures in the inked ribbon cartridge , for effecting reversal of the movement of the inked ribbon. Moreover, the feed mechanism in- cludes a feed roller and counter-roller for unidirectionally feeding the carbon coated ribbon. The control member withdraws the sensing levers from contact with the ribbon and the counter-roller from the feed roller. The inked ribbon cartridge includes a first aperture enabling the sensing levers to contact the inked ribbon wound on the two spools and a second aperture in which the feed roller and the counter-roller are freely rotat- able, externally to the path of the inked ribbon in the cartridge. The carbon coated ribbon cartridge includes an aperture which engages the sensing levers and sets the mechanism to wind in the corresponding spool the ribbon fed thereto from the feed roller and counter-roller. - 1 -

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