Browse Prior Art Database

Ribbon-Saving Technique for APA Printers

IP.com Disclosure Number: IPCOM000034569D
Original Publication Date: 1989-Mar-01
Included in the Prior Art Database: 2005-Jan-27
Document File: 3 page(s) / 72K

Publishing Venue

IBM

Related People

Czyszczewski, JS: AUTHOR [+6]

Abstract

Described is a method for optimizing ribbon usage by identifying areas that contain white space in text, graphics and image print tasks. (Image Omitted) Most APA print technologies that produce high quality print and use ribbons for printing have high supplies cost. One example is R2T2 (Resistive Ribbon Thermal Transfer) technology which produces very precise, dark print at high resolution by heating the print head and melting the ink to the paper. To make the printer cost effective to operate, special methods for manipulating the print head and ribbon intake mechanism must be used in the printer software to maximize the number of characters that will be printed from each ribbon.

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Ribbon-Saving Technique for APA Printers

Described is a method for optimizing ribbon usage by identifying areas that contain white space in text, graphics and image print tasks.

(Image Omitted)

Most APA print technologies that produce high quality print and use ribbons for printing have high supplies cost. One example is R2T2 (Resistive Ribbon Thermal Transfer) technology which produces very precise, dark print at high resolution by heating the print head and melting the ink to the paper. To make the printer cost effective to operate, special methods for manipulating the print head and ribbon intake mechanism must be used in the printer software to maximize the number of characters that will be printed from each ribbon. This is accomplished by identifying areas where there is a large amount of white space where the print head would be retracted, ribbon intake mechanism would stop and the printer would escape (horizontal movement) or index (vertical movement) to the next print position without advancing the ribbon. Since the nature of text and graphics data is inherently different, and often printed at different resolutions even in the same printer, separate methods are used for processing text and graphics data. A certain speed must be attained by the ribbon before printing can start. For text data, horizontal sections of the page (called swaths) are divided into sections equal to the threshold distance needed to attain proper print speed (on the order of 1.5 inc...