Printing – Planographic – Processes of lithographic printing
Reexamination Certificate
2005-03-22
2005-03-22
Eickholt, Eugene H. (Department: 2854)
Printing
Planographic
Processes of lithographic printing
C101S483000, C101S491000, C101S451000, C428S447000, C106S287160, C427S515000
Reexamination Certificate
active
06868786
ABSTRACT:
A patterning method for micro-contact printing involves the steps of: applying a resin on a master having projected patterns, hardening the resin and thereafter removing the hardened resin from the master to make a stamp of the resin; applying a molecular ink including hydrophobic molecules dispersed in a solvent on the stamp; forming micro-contact printed patterns of the hydrophobic molecular layer on a substrate by means of the stamp on which the molecular ink is applied; dipping the substrate with micro-contact printed patterns in a hydrophilic molecule solution dispersed in a solvent to give chemical modification to the areas of the surface of the substrate around the micro-contact printed patterns, the solution including hydrophilic molecules having a chain length shorter than the chain length of hydrophobic molecules included in the molecular ink is used as the hydrophilic molecule solution. According to the method, printed products having micro-contact printed patterns of a molecular level are obtained with a contrast between the micro-contact printed patterns and the area of the surface of the substrate around the micro-contact printed patterns.
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Akiba Uichi
Fujihira Masamichi
Fujii Shintaro
Kurihara Masa-aki
Okui Hiroki
Dainippon Printing Co., Ltd.
Eickholt Eugene H.
Flynn ,Thiel, Boutell & Tanis, P.C.
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