Ribbon Cartridge - Ribbon Guide Attachment Point
Original Publication Date: 1986-Sep-01
Included in the Prior Art Database: 2005-Mar-09
A technique is described whereby problems with frictional drag on printer cartridge ribbons are reduced by pivoting flexible ribbon guides around the center of stuffer gears. The printer ribbon frictional drag problem, as shown in Figs. 1a and 1b, is caused by ribbon 10 pulling flexible ribbon guide 11 toward stuffer gears 12, about pivot point 13, as the ribbon 10 is being pulled through the cartridge. Ribbon 10 wraps into flexible ribbon guide 11 at an angle greater than 180 degrees, causing high frictional forces. The improved method, as shown in Figs. 2a and 2b, positions the flexible ribbon guide pivot 13 at the center of top stuffer gear 12, at the entry section of the ribbon cartridge, and eliminates the ribbon drag problem at the entry portions of the flexible ribbon guide 11.