Browse Prior Art Database

Ribbon Feed Mechanism

IP.com Disclosure Number: IPCOM000086010D
Original Publication Date: 1976-Jul-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Bernard, LP: AUTHOR

Abstract

A compact ribbon mechanism is shown which uses a friction drive and can be moved into and out of the printing line as required.

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Ribbon Feed Mechanism

A compact ribbon mechanism is shown which uses a friction drive and can be moved into and out of the printing line as required.

In the figure, supply spool 1 and rewind spool 2 are supported for rotation about a common shaft 3 which is rotated by an elastic belt 4 on driven pulley 5 and drive pulley 6. The drive pulley 6 is part of a ribbon feed roll 7 which also supports an O-ring 8 engaging the platen 9. The ribbon mechanism is mounted for movement along the platen 9 on a bar 10 and as the platen moves from one print position to the next, the O-ring 8 rotates the ribbon feed roll 7 and belt 4.

Stacked ribbon spools 1 and 2 are supported on a base plate 11 which is pivotally mounted on a bracket 12 fixed to the base 13.

Also secured to the plate 11 is a slotted arm 14 which extends under a rotatable bail 15. The bail is connected to an actuating device such as a solenoid, not shown, that is operable to move the bail 15 to the position shown in dotted lines. A pin 16 affixed to base 13 extends into the slot and limits the travel of the ribbon and plate 11 about its pivot. The bail 15 is coextensive with the support bar 10 for the head, and the ribbon mechanism is thus permitted to move along the entire length of the bar 10 and print line.

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