The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 1978
Filed:
Feb. 25, 1977
Donald William Edwards, Wilmington, DE (US);
Emery John Gorondy, Chadds Ford, PA (US);
Arend Van Roggen, Kennett Square, PA (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Magnetic printing process, and apparatus for carrying out same, comrpising: A. forming a magnetic image on a ferromagnetic material which is imposed on an electrically conductive support and subjecting the ferromagnetic material to the action of a charge dissipating means; B. developing the magnetic image by decorating same with a ferromagnetic toner comprising a ferromagnetic component, a dye and/or chemical treating agent and a water-soluble or water-solubilizable, preferably thermoplastic, resin which substantially encapsulates the ferromagnetic component and the dye and/or treating agent; C. transferring the developed image to a substrate; D. permanently fixing the dye and/or chemical treating agent of the image on the substrate; and E. removing the ferromagnetic component and the resin from the image on the substrate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile