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:
Jan. 14, 2003
Filed:
Jul. 25, 2001
Hiroyuki Ishinaga, Tokyo, JP;
Sadayuki Sugama, Ibaraki, JP;
Yoshinori Misumi, Tokyo, JP;
Yoichi Taneya, Kanagawa, JP;
Hiroyuki Sugiyama, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Liquid is discharged at a high frequency in a consecutive manner with a liquid discharge head having a movable member. A bubble formed for discharge a first discharged droplet grows large into a discharge port side by the movable substantially closing a common liquid chamber side in a bubble forming procedure, and disappears fast at the common liquid chamber side by the movable member releasing the common liquid chamber side of a flow path in a bubble disappearance procedure, and reaches a state to remain at the discharge port side of a heat-generating body. Under this state, since the bubble disappears at the common liquid chamber side, a constant liquid is refilled to reach the discharge port side, and the bubble does not yet completely disappear, a meniscus is disposed comparatively closer to a liquid discharge face. Under the circumstances, if discharge of a second discharged droplet is arranged to start from this state, the liquid can be discharged well at a short interval in a consecutive manner.