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. 12, 1977
Filed:
Jul. 12, 1976
Bertram Van Breemen, Dayton, OH (US);
John A Robertson, Chillicothe, OH (US);
The Mead Corporation, Dayton, OH (US);
Abstract
An ink jet recorder has a means for forming streams of ink drops and a means for selectively charging the drops in the streams as they are formed. The drops pass through charge ring orifices which are lined with charge rings. Charging potentials are selectively applied to the charge rings to induce selectively charges in the drops as they are formed. In order to prevent a large deplating current from flowing between the charge rings in the event of an inadvertent short, a means for limiting current flow is provided. Current may be limited by a charge ring formed from a bulk resistive material such as an epoxy filled with conductive particles. Alternatively, current may be limited by discrete resistors positioned adjacent the charge rings and through which the charging potential is applied.