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:
Sep. 10, 2002
Filed:
May. 07, 1999
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
The present image forming device is provided with a toner carrier and a counter electrode opposite the toner carrier. Between the toner carrier and the counter electrode is provided a jet control section having a plurality of gates, each forming a space for passage of a jet of toner. Also provided is a control electrode driver, which is capable of applying potentials independently to each gate of the jet control section. The present image forming device forms a toner image on a transfer material by controlling passage of toner through a given gate by application of an ON potential which allows passage of the toner through the gate and an OFF potential which prevents passage of the toner through the gate. A potential difference VH between the toner carrier and the counter electrode and an intensity EH of an electrical field in the vicinity of the counter electrode satisfy VH≦1.5 kV and EH≧1.8 kV/mm, respectively. Thus it is possible to provide a toner jet image forming device which reduces scattering occurring when the toner particles strike the transfer material, and which is able to form good pixels and good images.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile