Patents by Inventor Steven J. Lachajewski

Steven J. Lachajewski has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Adaptive color control system and method for regulating ink utilizing a gain parameter and sensitivity adapter
    Patent number: 6142078
    Abstract: An adaptive control system is intended for use in conjunction with a printing press to control the setting of an ink control device that regulates the amount of ink applied to a substrate. The control system includes a controller for calculating a new setting for the ink control device based on a measured ink color value and a target ink color value. The controller has at least one gain parameter. The control system also includes a sensitivity adapter in communication with the controller. The sensitivity adapter modifies the gain parameter in response to the sensitivity of the ink control device to a correction in setting issued by the controller. The control system operates so that a measured ink color value on the substrate converges toward a target ink color value.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: November 7, 2000
    Assignee: Quad/Tech, Inc.
    Inventor: Steven J. Lachajewski