Invention Grant
- Patent Title: Transfer printing using shape memory polymers
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Application No.: US15657487Application Date: 2017-07-24
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Publication No.: US10533080B2Publication Date: 2020-01-14
- Inventor: Seok Kim , Jeffrey D. Eisenhaure
- Applicant: The Board of Trustees of the University of Illinois
- Applicant Address: US IL Urbana
- Assignee: The Board of Trustees of the University of Illinois
- Current Assignee: The Board of Trustees of the University of Illinois
- Current Assignee Address: US IL Urbana
- Agency: Brinks Gilson & Lione
- Main IPC: C08J7/04
- IPC: C08J7/04 ; B05C1/02 ; B05D1/26 ; B41J2/475 ; B81C1/00

Abstract:
A method of transfer printing comprises globally heating an array of stamps, where each stamp comprises a shape memory polymer with a light absorbing agent dispersed therein, and pressing the array of stamps to a donor substrate comprising a plurality of inks. Each stamp is thereby compressed from an undeformed adhesion-off configuration to a deformed adhesion-on configuration. The array of stamps is then cooled to rigidize the shape memory polymer and bind the plurality of inks to the stamps in the deformed adhesion-on configuration. The plurality of inks remain bound to the stamps while the array of stamps is positioned in proximity with a receiving substrate. A selected stamp in the array is then locally heated using a concentrated light source. The selected stamp returns to the undeformed adhesion-off configuration, and the ink bound to the selected stamp is released and transfer printed onto the receiving substrate.
Public/Granted literature
- US20180100046A1 TRANSFER PRINTING USING SHAPE MEMORY POLYMERS Public/Granted day:2018-04-12
Information query