Browse Prior Art Database

Resistive Ribbon Printing using Sublimable Dyes

IP.com Disclosure Number: IPCOM000103520D
Original Publication Date: 1990-Dec-01
Included in the Prior Art Database: 2005-Mar-18
Document File: 1 page(s) / 47K

Publishing Venue

IBM

Related People

Aviram, A: AUTHOR [+2]

Abstract

Resistive ribbon printing is an improved form of thermal printing in which heat is generated directly within the print ribbon instead of within the print head. The heat locally melts a fusible interlayer to transfer ink to a receiving medium, such as paper. The use of a resistive ribbon permits high quality printing at many inches/sec. but is somewhat costly. In order to utilize the ribbon efficiently there has been interest in developing special inks that permit the printing of several inches of print from one inch of ribbon by physically skidding the ribbon across the paper during the printing process. However, this leads to some degree of smearing of the ink as it is melted and transferred to paper.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 80% of the total text.

Resistive Ribbon Printing using Sublimable Dyes

      Resistive ribbon printing is an improved form of thermal
printing in which heat is generated directly within the print ribbon
instead of within the print head.  The heat locally melts a fusible
interlayer to transfer ink to a receiving medium, such as paper.  The
use of a resistive ribbon permits high quality printing at many
inches/sec. but is somewhat costly.  In order to utilize the ribbon
efficiently there has been interest in developing special inks that
permit the printing of several inches of print from one inch of
ribbon by physically skidding the ribbon across the paper during the
printing process.  However, this leads to some degree of smearing of
the ink as it is melted and transferred to paper.

      To solve this problem, a sublimable ink is used and printing is
achieved by vapor transport between the paper and printing ribbon.
In this way smearing is avoided and quality printing can be achieved.
It is very advantageous to use a sublimable dye as an ink with a
resistive ribbon, since much higher print temperatures are reached
with carbon black-loaded polycarbonate ribbon than are possible with
typical thermal ribbon consisting of polyester. Sublimination rate
increases exponentially with temperature so that considerably faster
printing is possible with the higher temperature ribbon.  Other
advantages are the following:

      Improved print quality on rough paper since intricate contact
for...