Abstract: A pickup guide mechanism in which a shaft for guiding a pickup is arranged over an opening formed on a chassis and the shaft is fixed to the chassis by a fixing unit. The fixing unit includes a countersunk head screw, which is screwed to the chassis, the tapered face of the head portion of which pushes an end portion of the guide shaft, wherein the taper angle of the tapered face of the head portion exceeds 90°.

Abstract: A pigment dispersion is disclosed which comprises a pigment dispersant, a nonaqueous solvent and optionally a binder resin, wherein the pigment dispersion comprises as the pigment dispersion at least 0.2 parts by weight of a modified novolak resin (A) relative to 100 parts weight of the pigment, the modified novolak resin (A) having an aromatic ring and a ring structure given by ring opening of an epoxy group by a carboxyl group of a hydroxycarboxylic acid or a derivative thereof. An ink composition for offset printing containing the pigment dispersion is also disclosed.

Abstract: A pigment dispersion is disclosed which comprises a pigment, a pigment dispersant, and optionally a binder resin, wherein the pigment dispersion comprises as the pigment dispersion at least 0.2 parts by weight of a modified novolak resin (A) and/or a graft copolymer (B) relative to 100 parts by weight of the pigment, the modified novolak resin (A) and the graft copolymer (B) each having an aromatic ring and a ring structure given by ring opening of an epoxy group by a carboxyl group of a hydroxycarboxylic acid or a derivative thereof. An ink composition for offset printing containing the pigment dispersion is also disclosed.

Abstract: A rod-shaped workpiece W is supported at its circumferential surface by a shoe 14 and a pair of rolls 16 and 17, and is rotated by the rolls 16 and 17. The rod-shaped workpiece W is ground by being abut against a backing plate 19 at its one end by the rotation of the rolls 16 and 17, and put in abrasive contact with a sectionally arch-shaped groove-like circumferential surface 20b of a grinding wheel 20 at its other end surface. A floating plate 37 is provided so that a slight gap takes place is in a guide hole 42 of a housing 36. A sphere 39 supported by a support member 38 is provided in a retaining recess 47 on a rear end surface of the floating plate 37, and the floating plate 37 is swingably supported.

Abstract: A workpiece transfer device of a grinding machine is provided with an arm having a suction pad thereon for transferring ground workpieces. Since air is injected from the suction pad when the arm is in a standby position, coolant and grinding chips are not sucked into the suction pad.