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Adjustable Ribbon Tracking Device

IP.com Disclosure Number: IPCOM000080175D
Original Publication Date: 1973-Nov-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Lentz, RC: AUTHOR

Abstract

This tracking device includes a roll 10 over which an inked ribbon 12 passes, and roll 10 is adjustable in position so that ribbon 12 tracks within close tolerances across printer 14 for proper printing action.

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Adjustable Ribbon Tracking Device

This tracking device includes a roll 10 over which an inked ribbon 12 passes, and roll 10 is adjustable in position so that ribbon 12 tracks within close tolerances across printer 14 for proper printing action.

Ribbon 12 is drawn from a ribbon cartridge 16 across rolls 10 and 18 to printer 14. Cartridge 16 includes nipped rolls 20 and 22, one of which is driven for moving ribbon 12 in this manner.

Roll 10 is rotatably mounted on shaft 24 fixed with respect to stud 26 having a tenon 28 eccentrically disposed on one end. Stud 26 is located in a cavity 30 of a fixed member 32, and an annular retainer 34 is screw-threaded into cavity 30 and has shaft 24 passing through it. Tenon 28 fits within a small diameter cavity 36 connected with cavity 30.

Ribbon tracking may be adjusted in direction of arrows A and B by slightly loosening retainer 34 while holding shaft 24 and stud 26 from rotating, by a screw driver in slot 24a provided in the end of shaft 24. Retainer 34 preferably has a hexagonal periphery to allow loosening with a wrench-type tool. After retainer 34 is loosened, shaft 24 is adjustably rotated. This action causes shaft 24 and roll 10 to change angular position with respect to the direction of movement C of ribbon 12, due to the location of cavity 36 concentric with cavity 30 and the eccentric disposition of tenon 28 on the end of stud 26. Such change in angular disposition of roll 10 causes the ribbon 12 to move in either d...