Title: Colorant presentation for pad printing
Application Number: 200610149214 Application Date: 2006.09.27
Publication Number: 1951694 Publication Date: 2007.04.25
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B41F31/02;B41F33/10;G02C7/04
Applicant(s) Name: Johson And Johnson Vision Care, Inc. Address:
Inventor(s) Name: Michael F. Widman Joseph Ryan Aiden Flaming
Attorney & Agent: liuhua lian
Abstract:
    The present invention provides systems and methods for providing colorant to a colorant cup apparatus that is adjacent to a pad printing cliche. The fluid colorant is fed from a colorant container through a feed conduit to the cup and an inline viscometer external to the colorant container measures the viscosity of colorant within the feed conduit. A control mechanism can dispense colorant solvent into the colorant container based upon a viscosity measurement performed by the inline viscometer. The disclosed systems, colorant cups and methods are useful in the preparation of tinted contact lenses.
Time: 5