Method to Provide a Multi-Pass Color Printing With a Multi-Line Print Head
Original Publication Date: 1987-May-01
Included in the Prior Art Database: 2005-Feb-01
This article describes method for using a multiple track color ribbon with a multi-line print head, i.e., a print head with a vertical height such as to span multiple print lines. The method disclosed does not require precise vertical alignment of the ribbon with respect to the print head, nor does it require the use of a ribbon shift mechanism. (Image Omitted) A typical resistive ribbon thermal transfer print head consists of a column of 40 printing electrodes at a vertical spacing of 1/240th inch. This head allows the printing of a 1/6th-inch-wide swath of text or graphics across the page with each pass of the print head. The print head described consists of a column of 160 printing electrodes and is capable of printing four lines (2/3rds inch) with each pass. Two types of ribbons can be used with the print head.