Developer carrying member and manufacturing method thereof

A developer carrying member comprising:

• a shaft extending in a predetermined direction;
• a magnet fixed to an outer circumferential surface of the shaft;
• a sleeve in a cylindrical shape with the shaft as a central axis thereof, the sleeve carrying developer on an outer circumferential surface thereof;
• a flange fixed to an end opening of the sleeve in the predetermined direction and rotatably supported on the shaft, the flange rotating together with the sleeve about the central axis;
• and
• an adhesive that bonds together the sleeve and the flange,
• wherein
• the flange has a fitting portion in a cylindrical shape that is fitted inside the sleeve through the end opening,
• the fitting portion has:
• a first fitting portion that contacts an inner circumferential surface of the sleeve;
• a second fitting portion that has a same outer diameter as the first fitting portion and that contacts the inner circumferential surface of the sleeve at a position closer to the end opening than the first fitting portion;
• and
• a groove portion that is formed between the first fitting portion and the second fitting portion in the predetermined direction and that is recessed in a radial direction with respect to outer circumferential surfaces of the first fitting portion and the second fitting portion,
• the adhesive is disposed in the groove portion, the groove portion has a first groove portion, a second groove portion, and a third groove portion,
• the first groove portion, the second groove portion, and the third groove portion are formed continuously in this order in the predetermined direction from a first fitting portion side to a second fitting portion side, and
• a height from a bottom surface of the second groove portion to an outer circumferential surface of the first fitting portion is greater than a height from a bottom surface of the first groove portion to the outer circumferential surface of the first fitting portion, and
• a height from a bottom surface of the third groove portion to the outer circumferential surface of the first fitting portion is smaller than the height from the bottom surface of the second groove portion to the outer circumferential surface of the first fitting portion, and is equal to or greater than the height from the bottom surface of the first groove portion to the outer circumferential surface of the first fitting portion.