A gloss processing apparatus for glossing at least part of a toner image formed on a sheet, said apparatus comprising:
- (i) a main body of said apparatus including a movable portion;
- (ii) a film cartridge detachably mountable to said main body, said film cartridge including
- (ii-i) a film;
- (ii-ii) a first roller configured so that said film can be wound thereon;
- (ii-iii) a first container configured to contain said first roller, said first container having a first opening configured to permit passage of said film therethrough;
- (ii-iv) a second roller configured to wind up said film;
- (ii-v) a second container configured to contain said second roller, said second container having a second opening configured to permit passage of said film therethrough;
- and
- (ii-vi) an abutting portion configured to abut said movable portion with a moving operation to receive a force for causing said first container and said second container to move away from each other.