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. 20, 1993
Filed:
Oct. 03, 1991
Yoshiyasu Honma, Nagoya, JP;
Tetsuya Kitamura, Gifu, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
The invention relates to an image recording apparatus which directly controls a flow of toner particles for recording an image on a recording medium. The image recording apparatus of the invention, for recording an image on an image recording medium according to an image signal, has a toner particle supplying portion for supplying charged toner particles and a control electrode for directly controlling the flow of toner particles supplied from the toner particles supplying portion. The control electrode has a first electrode layer which has a thin board-like shape. The first electrode layer is provided on a base insulating material of the control electrode and is disposed facing to the toner particles supplying portion with a predetermined space therebetween. A first voltage power supply supplies a predetermined voltage, having at opposite polarity to that of the charged toner particles, to the first electrode layer. On the opposite side of the base insulating material is a second electrode layer made up of multiple independent electrodes. Each of the independent electrodes is supplied with a second voltage that is either larger or smaller than the predetermined voltage. A plurality of apertures, equal in number to the number of independent electrodes, that pass through the first electrode layer, the base insulating material and an associated independent electrode have an electrical field established therein that either pass or repel the charged toner particles to produce high density contrast images.