Liquid ejection head, method of detaching protection member from liquid ejection head, and liquid ejection apparatus

A liquid ejection apparatus, comprising:

• a liquid ejection head including a detachable protection member, wherein
• the liquid ejection head includes:
• a rail portion extending along a first direction,
• a rail opening formed in the rail portion, and
• a fixing opening fixing the protection member,
• the protection member includes
• a protection portion covering an ejection surface of the liquid ejection head,
• an engagement portion that can be engaged with the rail portion and that has a shorter length in the first direction than that of the rail opening, and
• a fixing portion that is engaged with the fixing opening in an engagement position in which the rail portion and the engagement portion are engaged with each other and that fixes the liquid ejection head and the protection member so as to regulate movement of the protection member with respect to the liquid ejection head in the first direction,
• the rail portion includes a contact portion at one end in the first direction with which the engagement portion is put in contact,
• the other end on an opposite side of the one end in the first direction is connected with the rail opening while the liquid ejection head and the protection member are fixed, and
• the liquid ejection apparatus includes:
• the liquid ejection head from which the protection member is detached, and
• a liquid ejection head mounting unit that detachably mounts the liquid ejection head on the liquid ejection apparatus.