JP2012011653A5

JP2012011653A5 -

Info

Publication number: JP2012011653A5
Application number: JP2010149788A
Authority: JP
Filing date: 2010-06-30
Publication date: 2013-02-21
Anticipated expiration: 2030-06-30

Description

（発明１０）：発明１０に係る液体吐出ヘッドは、液滴を吐出する複数のノズルと、前記複数のノズルに対応して設けられた複数の圧力室と、前記複数の圧力室のそれぞれに対応して配置され、各圧力室内の液体に吐出力を与えるエネルギー発生素子と、前記複数の圧力室に連通し、各圧力室に液体を供給する第１共通流路と、前記第１共通流路を他の第１流路に連結させるために当該第１共通流路に設けられた第１連結口と、前記圧力室毎に各圧力室と前記第１共通流路との間をつなぐ第１個別流路と、前記各圧力室にそれぞれ個別に連通する第２個別流路と、前記第２個別流路を介して前記複数の圧力室に連通し、各圧力室から液体を回収し又は各圧力室に液体を供給する第２共通流路と、前記第２共通流路を他の第２流路に連結させるために当該第２共通流路に設けられた第２連結口と、前記第１共通流路及び第２共通流路のうち、前記第１連結口から前記圧力室までの流路抵抗値と前記第２連結口から前記圧力室までの流路抵抗値とを比較して流路抵抗値が低い方の共通流路に連通し、前記複数のノズルが形成されたノズル面に開口を有する大気開放孔と、を備えたことを特徴とする。 (Invention 10): A liquid discharge head according to Invention 10 corresponds to each of a plurality of nozzles for discharging droplets, a plurality of pressure chambers provided corresponding to the plurality of nozzles, and the plurality of pressure chambers. And an energy generating element that provides a discharge force to the liquid in each pressure chamber, a first common flow path that communicates with the plurality of pressure chambers and supplies the liquid to each pressure chamber, and the first common flow path A first connection port provided in the first common flow path to connect the first pressure passage to the other first flow path and each pressure chamber and the first common flow path for each pressure chamber. An individual channel, a second individual channel that individually communicates with each of the pressure chambers, and a plurality of pressure chambers that communicate with each other via the second individual channel, and collect liquid from each pressure chamber or A second common channel for supplying a liquid to the pressure chamber, and the second common channel is connected to another second channel. Therefore, among the second connection port provided in the second common flow channel, and the first common flow channel and the second common flow channel, the flow resistance value from the first connection port to the pressure chamber, and the Comparing with the channel resistance value from the second connection port to the pressure chamber, it communicates with the common channel with the lower channel resistance value, and has an opening on the nozzle surface where the plurality of nozzles are formed. And a hole.

Claims

A plurality of nozzles for discharging droplets;
A plurality of pressure chambers provided corresponding to the plurality of nozzles;
An energy generating element that is disposed corresponding to each of the plurality of pressure chambers, and that applies a discharge force to the liquid in each pressure chamber;
A first common flow path communicating with the plurality of pressure chambers and supplying a liquid to each pressure chamber;
A first connection port provided in the first common flow path for connecting the first common flow path to another first flow path;
A first individual flow path connecting between each pressure chamber and the first common flow path for each pressure chamber;
A second individual flow path individually communicating with each of the pressure chambers;
A second common flow path that communicates with the plurality of pressure chambers via the second individual flow path, recovers liquid from each pressure chamber, or supplies liquid to each pressure chamber;
A second connection port provided in the second common flow path for connecting the second common flow path to another second flow path;
Of the first common flow path and the second common flow path, the flow resistance value from the first connection port to the pressure chamber is compared with the flow resistance value from the second connection port to the pressure chamber. An air opening hole having an opening on the nozzle surface where the plurality of nozzles are formed,
A liquid discharge head comprising: