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:
Jan. 24, 1978
Filed:
Sep. 10, 1976
Applicant:
Inventors:
John H Lewis, Los Angeles, CA (US);
Robert A Young, Chatsworth, CA (US);
Assignee:
Xonics, Inc., Van Nuys, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
2503 / ; 2504 / ;
Abstract
Apparatus and method for improving contrast in the visual image formed by toner deposited on an electrostatic image such as is formed in xerography and ionography. Hard copy and real time electrostatic imaging systems utilizing a fluorescent toner in the form of particles having a fluorescent core and an electrophoretic coating. A viewing system with a radiation source of a wavelength for exciting the fluorescent toner particles and preferably a filter for suppressing the excitation radiation in the fluorescent image.