Patents by Inventor Antonius B. T. M. Koenders

Antonius B. T. M. Koenders 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).

  • Device for the development of a latent electrostatic image, apparatus for producing prints by electrophotographic means and method for developing a latent electrostatic image
    Patent number: 4768061
    Abstract: A device is described for developing a latent electrostatic image which is present on a surface, for example a photoconductor surface. The device has one or more regions of a first type having relatively large dimensions and one or more regions of a second type having relatively small dimensions, both dimensions being measured parallel to the direction of relative movement of the device with respect to the image surface.The regions described may be separately and independently supplied with electric potentials.A method is described for developing a latent electrostatic image with use of a device according to the invention whereby energizing of the first and second type regions is carried out in accordance with developer-density and/or contrast requirements.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: August 30, 1988
    Assignee: Coulter Stork Patents B.V.
    Inventors: Antonius B. T. M. Koenders, Theodorus P. S. Louwers, Julia M. Alston