LIQUID DISCHARGE HEAD, LIQUID DISCHARGE UNIT, LIQUID DISCHARGING DEVICE

To make it possible to efficiently perform monitoring and positional alignment of an application state of an adhesive.SOLUTION: A liquid discharge head comprises a first component 101, and a second component 102 which is joined to the first component 101 by an adhesive 103. The first component 101 is provided with a through hole mark 111 as a mark for positional alignment, and the second component 102 is provided with a first mark 121 and a second mark 122 as a mark for positional alignment. The first mark 121 is a mark for positional alignment such that the adhesive 103 is applied in vicinity thereof located in a joint area 104, and the second mark 122 is a mark for positional alignment such that the adhesive 103 is not applied in vicinity thereof located outside the joint area 104.SELECTED DRAWING: Figure 5 【課題】接着剤の付与状態のモニタリングと位置合わせを効率的に行えるようにする。【解決手段】第１部材１０１と、第１部材１０１と接着剤１０３で接合される第２部材１０２とを備え、第１部材１０１には位置合わせ用マークとして貫通穴マーク１１１が設けられ、第２部材１０２には位置合わせ用マークとして第１マーク１２１と第２マーク１２２が設けられ、第１マーク１２１は、接合領域１０４内に配置された近傍に接着剤１０３が付与されている位置合わせ用マークであり、第２マーク１２２は、接合領域１０４外に配置された近傍に接着剤１０３が付与されていない位置合わせ用マークである。【選択図】図５