Liquid discharge head and recording apparatus using the same

Patent metadata

Field	Value
Publication number	US-8944569-B2
Application number	US-201414172655-A
Country	US
Kind code	B2
Filing date	Feb 4, 2014
Priority date	Feb 7, 2013
Publication date	Feb 3, 2015
Grant date	Feb 3, 2015

Abstract

A liquid discharge head includes: a recording element substrate including a discharge port group for discharging liquid and a supply port for supplying the liquid to the discharge port group; a supporting member including a liquid chamber for storing the liquid therein, the supporting member being configured to support the recording element substrate; a flow path formed between the liquid chamber and the supply port and configured to allow the liquid to flow therethrough along a main surface of the recording element substrate on which the supply port opens; and a plurality of through holes communicating the liquid chamber with the flow path. A sum of opening areas of the plurality of through holes per unit area is greater in a region having relatively high temperature than that in a region having relatively low temperature in an in-plane direction of the main surface of the recording element substrate.

First claim

What is claimed is:

1. A liquid discharge head comprising:
a recording element substrate including a discharge port group configured to discharge liquid and a supply port configured to supply the liquid to the discharge port group;
a supporting member including a liquid chamber configured to store the liquid therein, the supporting member being configured to support the recording element substrate;
a flow path formed between the liquid chamber and the supply port and configure…

Assignees

• Canon Kk

Inventors

• Moriya Takatsugu
• Goto Ryohei
• Yamada Kazuhiro
• Iwanaga Shuzo

Classifications

• B41J2/14427 Primary

  Operations & Transport · mapped topic

• B41J2/1433 Primary

  Operations & Transport · mapped topic