Method for removing and attaching first holder member relative to second holder member supported by housing in cartridge

A method for removing a first holder member from a second holder member in a cartridge, the cartridge comprising:

• a housing;
• the first holder member holding an electrical contact surface;
• and the second holder member supported by the housing, the first holder member including a pawl and the second holder member including a corner part engageable with the pawl of the first holder member, the electrical contact surface being held at one end surface of the first holder member in a first direction crossing the electrical contact surface,
• the method comprising:
• disengaging the pawl from the corner part;
• and
• separating the housing and the second holder member from the first holder member in the first direction away from the one end surface of the first holder member,
• wherein the pawl includes a first pawl and a second pawl,
• wherein the corner part includes:
• a first corner part engageable with the first pawl;
• and a second corner part engageable with the second pawl,
• wherein the second holder member has one end portion and another end face in the first direction, and the second holder member has a first through-hole and a second through-hole both of which are open at the another end face, and
• wherein the disengaging includes:
• disengaging the first pawl from the first corner part from an outside of the second holder member through the first through-hole;
• and disengaging the second pawl from the second corner part from the outside of the second holder member through the second through-hole.