Smearless means 'does not smear' - solves the problem of wax ribbon printing, which can smear. Scratch means 'scratch resistant' - the printing cannot be scratched off by abrasion. Solvent means 'solvent resistant' - the printing cannot be dissolved by solvent attack. Wax is a cheaper printing medium. With a low melt point it can smear or scratch.
Resin tends to be a more expensive printing medium.
With a high melt point it is hard wearing, smear and scratch resistant. All rights reserved. Reproduction prohibited without express written permission.