Treated Paper for High Resolution Printing With Good Adhesion
Original Publication Date: 1988-Nov-01
Included in the Prior Art Database: 2005-Feb-15
The surface of any standard, white paper is treated with polyethylacrylate during manufacture. Use of the paper with a dot-matrix thermal printer results in increased ink-to-paper adhesion, permitting accurate and very high resolution images. U.S. Patent No. 4,384,797 discloses a ribbon for such thermal printing by dots in which the ink layer of the ribbon comprises a major amount of an ethylene vinyl acetate copolymer and minor amounts of polyethylacrylate and carbon black. The ribbon is heated from small electrodes which create localized points of heat. Heat from those points renders the ink layer flowable, and the ink flows to adjoining paper in a printer to form the dots. However, the images can be fragile and too easily rubbed off ordinary paper when the dots are exceptionally small.