A printer, comprising: a main body including a printing unit to print an image on a printing medium and including an interior space to accommodate a removable developer cartridge that includes a developer to be supplied to the printing unit; characterized in that the printer comprises: a releasing member, provided in a rear portion of the interior space of the main body, that when the developer cartridge is installed in the main body and is to be removed from the main body, is to rotate so as to move the developer cartridge in a removal direction to remove the developer cartridge from the main body; and a latching portion (31, 32), provided in a front portion of the interior space of the main body, that when the developer cartridge is installed in the main body is latched to a portion of the developer cartridge so that a handle (5, 100) of the developer cartridge is maintained in a first position, and when the developer cartridge is removed from the main body the latching portion (31, 32) is unlatched from the portion of the developer cartridge so that the handle (5, 100) is concurrently moved to a second position to protrude from the developer cartridge. a main body including a printing unit to print an image on a printing medium and including an interior space to accommodate a removable developer cartridge that includes a developer to be supplied to the printing unit; characterized in that the printer comprises: a releasing member, provided in a rear portion of the interior space of the main body, that when the developer cartridge is installed in the main body and is to be removed from the main body, is to rotate so as to move the developer cartridge in a removal direction to remove the developer cartridge from the main body; and a latching portion (31, 32), provided in a front portion of the interior space of the main body, that when the developer cartridge is installed in the main body is latched to a portion of the developer cartridge so that a handle (5, 100) of the developer cartridge is maintained in a first position, and when the developer cartridge is removed from the main body the latching portion (31, 32) is unlatched from the portion of the developer cartridge so that the handle (5, 100) is concurrently moved to a second position to protrude from the developer cartridge. a releasing member, provided in a rear portion of the interior space of the main body, that when the developer cartridge is installed in the main body and is to be removed from the main body, is to rotate so as to move the developer cartridge in a removal direction to remove the developer cartridge from the main body; and a latching portion (31, 32), provided in a front portion of the interior space of the main body, that when the developer cartridge is installed in the main body is latched to a portion of the developer cartridge so that a handle (5, 100) of the developer cartridge is maintained in a first position, and when the developer cartridge is removed from the main body the latching portion (31, 32) is unlatched from the portion of the developer cartridge so that the handle (5, 100) is concurrently moved to a second position to protrude from the developer cartridge.