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. 09, 1997
Filed:
Jun. 07, 1994
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A recording head comprises electrothermal transducers for jetting ink and functional devices for driving these electrothermal transducers, both of which are arranged on a single substrate plate. The functional devices comprise a pair of major electrode regions such as drain and source regions arranged on the substrate plate, a region comprising control electrode region and surrounding one of electrode regions used to be grounded, an insulating layer arranged on the control electrode region and a control electrode arranged on the insulating layer. The control layer alters the semiconductor types of a boundary surface of the control electrode region by applying a control voltage through the insulating layer and as a result a current flow between major electrode regions, source and drain, is controlled.