A toner for electrostatic latent image development having coloring particles containing at least a binding resin, a coloring agent and a release agent, and an external additive, wherein a variation in a number average particle diameter of the coloring particles is 25 or less, an average circularity of the coloring particles is 0. The finish has a thread portion and an opening formed by the finish. In addition, positioning means are provided so that in a first position setting, the suction grippers extend past the suction surface of the suction plate and so that in a second position setting, the suction grippers are set back into the openings in such a manner that they no longer extend past the suction surface of the suction plate. The ADC lookahead pipeline uses open-loop residue amplifiers.