. . "developing apparatus depicted in FIG. 4, with a blade 76 removed; [0058]FIG. 7 is a simplified right-hand side view showing the developing apparatus depicted in FIG. 4, with the blade 76 and the developing roller 71 removed; [0059]FIGS. 8A and 8B are a front view and a right-hand side view, respectively, each showing the side seal 75 of FIG. 4 kept in an unmounted state; [0060]FIG. 9 is a simplifi" . .