Heat transfer printing

US10620570B2 · kind B2 · utility

Assignee

• HP INDIGO B.V. · NL

Inventors

• Inna Tzomik · Nes Ziona, IL
• Albert Teishev · Nesher, IL

Key dates

• Filing date: Apr 5, 2017
• Grant date: Apr 14, 2020
• Expiry date: Apr 5, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41M2205/10
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

There is provided a process for heat transfer printing, comprising: electrostatically printing a transparent release composition onto a transfer material (1) to form a release layer (2) disposed on the transfer material; (1) electrostatically printing an electrostatic ink composition to form an image layer (3) disposed on the release layer (2); applying a heat-activatable adhesive composition to the image layer to form a heat-activatable adhesive layer (4); contacting the heat-activatable adhesive layer (4) with a target substrate (5) under conditions such that the heat-activatable adhesive layer (4) is activated to adhere to the target substrate and the release layer (2) is softened; and separating the target substrate (5) and the transfer material (1) such that the heat-activatable layer (4), image layer (3) and release layer (2) are transferred to the target substrate.