Ink Smudge-Prevention/Acoustic Noise Dampening Design for a Dot Matrix
Original Publication Date: 1987-Feb-01
Included in the Prior Art Database: 2005-Jan-31
An improved ribbon guide which serves to guide the ribbon in front of the printhead as well as hold the paper firmly against the platen is disclosed. Prior-art ribbon guides are thin sheets of plastic or metal having an aperture through which the characters are printed. By using an apertured guide, the thickness of the guide and the need to avoid ink smudging requires that the printhead, ribbon, and guide assembly be spaced from the paper by a minimum amount. By using the guide of this disclosure, printhead-to-paper spacing 31, shown in Fig. 1, can be reduced. Printhead 11 is mounted on a carrier (not shown) for transverse movement while printing a line of print. Ribbon guide 13 is mounted, as shown in Figs. 2 and 3, on printhead 11 for movement therewith.