| 摘要 |
PROBLEM TO BE SOLVED: To provide a developing cartridge and a drum cartridge that can cover a first gear and a second gear and achieve size reduction.SOLUTION: A developing cartridge 1 includes: a developing frame 2 configured to accommodate a toner therein; a developing roller 4 configured to rotate about a developing roller central axis line A2; a supply roller 5 configured to rotate about a supply roller central axis line A3 and configured to supply a toner to the developing roller 4; a developing gear 51 connected to an end of the developing roller 4; a supply gear 52 connected to an end of the supply roller 5; and a gear cover 48 including a developing roller covering part 73, a supply roller covering part 81, and a second peripheral wall 80; where the second peripheral wall 80 includes a notch 84 exposing a part of the supply gear 52, and a lower end part of the supply gear 52 projects with respect to the second peripheral wall 80 through the notch 84. |
