LIQUID JET HEAD, AND LIQUID JET DEVICE

To provide a technique for lowering channel resistance from pressure chambers to nozzles.SOLUTION: A liquid jet head includes a nozzle plate formed with a first nozzle for jetting liquid, first and second pressure chambers arranged side by side in a first direction, third and fourth pressure chambers arranged side by side in the first direction, a first communication channel which is a channel extending along the nozzle plate, is connected to the first nozzle and communicates with the first to fourth pressure chambers, a first common liquid chamber communicating with the first and second pressure chambers, and a second common liquid chamber communicating with the third and fourth pressure chambers. The first and second pressure chambers, and the third and fourth pressure chambers are deviated in a second direction perpendicular to the first direction. When a width in the first direction of the first communication channel at a position overlapping the first nozzle when being viewed toward the nozzle plate in plan view is defined as a first width, and a width in the first direction of the first pressure chamber is defined as a pressure chamber width, the first width is equal to or more than the pressure chamber width.SELECTED DRAWING: Figure 6 【課題】圧力室からノズルまでの流路抵抗を低下する技術を提供する。【解決手段】液体噴射ヘッドは、液体を噴射する第１ノズルが形成されたノズルプレートと、第１方向に並んで配置された第１及び第２圧力室と、第１方向に並んで配置された第３及び第４圧力室と、ノズルプレートに沿って延在する流路であり、第１ノズルに接続されるとともに第１乃至第４圧力室に連通する第１連通流路と、第１及び第２圧力室に連通する第１共通液室と、第３及び第４圧力室に連通する第２共通液室と、を備える。第１及び第２圧力室と、第３及び第４圧力室とは、第１方向に直交する第２方向にずれている。ノズルプレートに向かって見た平面視において第１ノズルと重なる位置での第１連通流路の第１方向の幅を第１幅とし、第１圧力室の第１方向の幅を圧力室幅としたとき、第１幅は圧力室幅以上である。【選択図】図６