Patent ID: 9442423
Filing Date: 2016-09-13
CPC Classification: G03G

Claim Text:
1. A developing cartridge comprising: a developing roller having an axis extending in an axial direction and an axial center region in the axial direction; a first frame including a toner accommodating portion and a developing roller support portion, the toner accommodating portion having an edge portion extending in a first direction perpendicular to the axial direction, the developing roller support portion supporting the developing roller and being in communication with the toner accommodating portion, the first frame comprising: a second frame covering the toner accommodating portion and the developing roller support portion, the second frame being melt-bonded to the first frame, the second frame comprising: a center surface facing the first frame and extending in the axial direction, the center surface being positioned closer to the axial center region of the developing roller than the fourth melt-bonding surface to the axial center region of the developing roller with respect to the axial direction, the center surface having a first center surface extending in the first direction and a second center surface positioned closer to the developing roller than the first center surface to the developing roller with respect to the first direction, the second center surface forming a second obtuse angle with the first center surface, the second center surface being separated from the first frame farther than the fourth melt-bonding surface from the first frame with respect to a direction perpendicular to the fourth melt-bonding surface, wherein the second obtuse angle formed between the first center surface and the second center surface is equal to or greater than 120° and smaller than 180°.