Browse Prior Art Database

Self-Aligning Ribbon-Stuffing Mechanism

IP.com Disclosure Number: IPCOM000059933D
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 76K

Publishing Venue

IBM

Related People

Hedrick, DR: AUTHOR [+2]

Abstract

In a printer ribbon cartridge ribbon-stuffing mechanism, consisting of a two-roller friction drive system, the idler roll support is mounted by means of a ball pivot which permits the idler roller to self-align its axis parallel to the axis of the driven feed roller. This arrangement promotes more even, jam-free feeding of the ribbon by eliminating the commonly experienced effects of axial misalignment of the rollers. In a conventional printer ribbon cartridge, the ribbon is contained within a reservoir in loose, irregular folds. The ribbon is withdrawn from one end of the reservoir, to traverse the print line, by a friction drive mechanism which pulls the ribbon to the other end of the cartridge and stuffs it back into the reservoir. Fig. 1 shows a plan view of the ribbon input end of the cartridge, and Fig.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 94% of the total text.

Page 1 of 2

Self-Aligning Ribbon-Stuffing Mechanism

In a printer ribbon cartridge ribbon-stuffing mechanism, consisting of a two-roller friction drive system, the idler roll support is mounted by means of a ball pivot which permits the idler roller to self-align its axis parallel to the axis of the driven feed roller. This arrangement promotes more even, jam-free feeding of the ribbon by eliminating the commonly experienced effects of axial misalignment of the rollers. In a conventional printer ribbon cartridge, the ribbon is contained within a reservoir in loose, irregular folds. The ribbon is withdrawn from one end of the reservoir, to traverse the print line, by a friction drive mechanism which pulls the ribbon to the other end of the cartridge and stuffs it back into the reservoir. Fig. 1 shows a plan view of the ribbon input end of the cartridge, and Fig. 2 shows an isometric view of the stuffing mechanism for the present embodiment. It is seen that ribbon 1 is pulled into cartridge 2 by driven feed roller 3 and idler roller 4, and stuffed into the reservoir area in loose, irregular folds 5. It is further seen that idler roller 4 is carried by stripper block 6 which is mounted by means of ball joint 7. Stripper block 6 is a one-piece molded part with two spring fingers 8. It is apparent that spring fingers 8, acting against the wall of cartridge 2, provide required idler roller tension and induce alignment of idler roller 4 parallel to feed roller 3, by pivoting strippe...