Ribbon Shield Structure for Printer
Original Publication Date: 1983-Jun-01
Included in the Prior Art Database: 2005-Feb-07
A ribbon shield device is provided for preventing ribbon smear in printers which have very tight tolerances between the ribbon and the paper. In order to prevent such smearing, a very thin stainless steel band is utilized in the area about the print point. The stainless steel band has an opening which permits the impact member to drive the ribbon through this opening to print on a substrate. We have observed that very thin stainless steel shields used for this purpose tend to undergo some buckling or distortion when pressure is applied from an outside source, such as an outfold in a continuous form. In order to prevent this, magnetically charged cylinders may be used adjacent to a thin magnetic member to provide a magnetic field which maintains the same shape as a stainless steel member but without buckling.