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1. (WO2018100412) IMPROVEMENTS IN THERMAL TRANSFER PRINTING

Pub. No.:    WO/2018/100412    International Application No.:    PCT/IB2016/057226
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Thu Dec 01 00:59:59 CET 2016
IPC: B41M 5/025
B41N 10/00
Applicants: LANDA LABS (2012) LTD
Inventors: LANDA, Benzion
ABRAMOVITCH, Sagi
HAVIV, Amit
AKNIN, Ofer
VALDMAN, Yaakov
NAGLER, Michael
Title: IMPROVEMENTS IN THERMAL TRANSFER PRINTING
Abstract:
A method and apparatus are disclosed for thermal transfer printing onto selected regions of a surface of a substrate. The method comprises the steps of: a) providing a transfer member having an imaging surface; b) coating the imaging surface of the transfer member with individual particles formed of, or coated with, a thermoplastic polymer; c) removing substantially all particles that are not in direct contact with the imaging surface to leave a uniform monolayer particle coating on the imaging surface; d) applying energy to selected regions of the coated imaging surface to heat and render tacky the particles within the selected regions; and e) pressing the coated imaging surface and the substrate surface against one another, either during or after application of energy, to cause transfer to the surface of the substrate of only the regions of the particle coating that have been rendered tacky. Steps b) and c) can be repeated to apply a fresh monolayer coating of particles to the selected regions from which the previously applied monolayer coating was transferred to the substrate surface, to leave the imaging surface again uniformly coated with a monolayer of particles allowing printing onto a subsequent substrate surface.