Patents Represented by Law Firm Roberts & Mercant
  • Solid transfer negative- or positive-working color proofing element
    Patent number: 5725988
    Abstract: This invention provides an improved negative-working or positive-working, single sheet color proofing method which can accurately reproduce images by using colored, photosensitive layers on substrates which are then overcoated with partially developable adhesive layers. The final construction is useful in predicting the image quality from a lithographic printing process. The partial removal of the adhesive layers cleans out any background stain which may remain from the incomplete removal of the photosensitive layer.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: March 10, 1998
    Assignee: Bayer Corporation
    Inventor: Stephan J. W. Platzer