Patent ID: 8236229

Claim:
A mold for use in producing a development blade, which blade is to be formed by adhering an elastic member to an elongated-shaped hard plate along the longitudinal direction thereof, the mold comprising: a cavity portion having a shape in accordance with the shape of the elastic member and including respective notched portions at respective ends in the longitudinal direction, such that the cavity portion is divided into a center portion between the two notched portions, and respective side end portions on the outer sides in the longitudinal direction of the notched portion, the cavity portion having a widthwise dimension of 2 to 10 mm; and a gate portion for injecting a material into the cavity portion, wherein the gate portion is positioned, in the longitudinal direction, either on a border between each notched portion and the center portion of the cavity portion, on one of the outer sides or on the center portion within 10 mm of the border.