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:
Mar. 08, 2022
Filed:
May. 21, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Masahiro Kuri, Utsunomiya, JP;
Noriyasu Hasegawa, Utsunomiya, JP;
Hisashi Namba, Utsunomiya, JP;
Ken Katsuta, Saitama, JP;
Keita Sakai, Utsunomiya, JP;
Nobuto Kawahara, Utsunomiya, JP;
Kenichi Kobayashi, Utsunomiya, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is an ejection apparatus including: an ejection head having an ejection opening for ejecting an ejection material in a liquid state; a storage container storing therein the ejection material and communicating with the ejection head; and a pressure control unit that maintains the pressure inside the storage container at a negative pressure. The pressure control unit generates a first pressure in the storage container in a normal operation, the first pressure being capable of forming a meniscus of the ejection material in the ejection opening. The pressure control unit drops the pressure inside the storage container to at least the first pressure in a case where the pressure inside the storage container reaches a predetermined pressure above the first pressure.