School of Chemistry - Research Publications

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    Wetting enhancement coating on intermediate transfer member (itm) for aqueous inkjet intermediate transfer architecture
    METTU, S ; Liu, C-H ; Condello, AS ; McConville, PJ ( 2014-06-19)
    Described herein is a method and apparatus for ink jet printing. The method includes providing a wetting enhancement coating on a transfer member. The wetting enhancement coating includes water; binders selected from the group consisting of acrylic polymers, styrene acrylic polymers, vinyl-acrylic polymers, vinyl acetate ethylene; and a surfactant. The wetting enhancement coating is dried to form a film having a surface energy greater than 25 mJ/m2. Ink droplets are ejected onto the film to form an ink image on the film. The ink image is dried and the ink image and film are transferred to a recording medium.
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    Oxygen plasma to improve wetting of aqueous latex inks on low surface energy elastomeric surfaces
    METTU, S ; Kanungo, M ; Condello, AS ; Badesha, SS ; Sharma, A ; Gervasi, DJ ( 2014-06-19)
    Described herein is a transfer member for use in aqueous ink jet printer. The transfer member includes an elastomeric material. The surface layer of the transfer member has been subjected to an energy treatment selected from the group including corona discharge, oxygen plasma discharge and electron beam discharge such that the surface layer possesses an aqueous ink contact angle of from about 25° to about 40°. The transfer member has a Shore A durometer of from about 20 to about 70. The ink jet printer is also described.
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    Apparatus and methods for ink-based digital printing using imaging plate having regular textured surface for reduced pullback
    METTU, S ; Kanungo, M ; Stowe, TD ; Pattekar, A ( 2014-07-24)
    An ink-based digital printing apparatus includes an imaging member having a surface layer with regular texture. The regular texture includes an array of microstructures such as cavities. Methods include forming the imaging member textured surface using photolithography and molding processes.