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:
May. 04, 1976
Filed:
Jul. 31, 1974
Applicant:
Inventors:
Alexander C Wu, Wayne, MI (US);
Shou L Hou, Chagrin Falls, OH (US);
Assignee:
Addressograph Multigraph Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01T / ;
U.S. Cl.
CPC ...
3172 / ; 96 / ; 250324 ;
Abstract
The invention deals with the construction and shape of the electrode employed in a duplicating apparatus which uses a drum shaped gas-ion modulating device. The curved modulator is matched with a curved gas-ion collecting electrode so that the propagation of the charged particles follows along the electrical field lines which are symmetrical about a center axis running longitudinally between the modulator and the collecting electrode. The ion optical system assures the production of a charge pattern on the dielectric paper that corresponds to the charge distribution system on the modulator.