Patent ID: 11904308
Assignee: RICOH COMPANY, LTD.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A liquid ejection unit, comprising:
a liquid holding section which has an ejection port through which a liquid is ejected and which holds the liquid;
a pressure adjustment section comprising a supply section and 1) detection unit which is fluidly connected in parallel to said supply section, with said liquid holding section or 2) an optical detection unit and which is configured to adjust a pressure of a liquid held in the liquid holding section; and
a displacement member which is configured to displace at least a part of the liquid whose pressure is adjusted and eject the liquid from the liquid holding section,
wherein the displacement member which is configured to displace the liquid holding section substantially parallel to an ejection direction of the liquid,
the liquid holding section is a tubular member extending substantially parallel to the ejection direction of the liquid,
the liquid holding section and the displacement member are arranged to overlap when viewed in a plan view, and
a shape of the liquid holding section when viewed in a plan view is smaller than a shape of the displacement member when viewed in a plan view.