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Vapor Scavenger in Thermal Ribbons

IP.com Disclosure Number: IPCOM000061398D
Original Publication Date: 1986-Jun-01
Included in the Prior Art Database: 2005-Mar-09

Publishing Venue

IBM

Related People

Authors:
Beach, BL Franey, TE Leslie, GG Mitchell, JL [+details]

Abstract

Thermal ribbons are necessarily heated in closed areas and such heating may produce vapors which are objectionable. A known scavenger such as ammonium thiocyanate or ammonium iodide may be dispersed through layers which are heated and transferred from a thermal ribbon during printing. The printing temperature breaks down those materials into an ammonia component, which is reactive with a broad range of possible vapors. Specifically, the ammonia will react with formaldehyde to form hexamethylene-tetramine.