Abstract: A colored coating composition comprising (a) 5 to 60% by weight of a polymer having a carboxyl group and a carboxylate group; (b) 5 to 60% by weight of a polymer having a hydroxyl group and an epoxy group; (c) 0.05 to 20% by weight of a pigment-dispersing agent; and (d) 0.1 to 50% by weight of a pigment; (wherein, each amount formulated of the components (a) to (d) is based on the weight of total solid in the colored coating composition), wherein, an acid total amount AR and a base total amount BR which are derived from said pigment-dispersing agent, and an acid total amount AP and a base total amount BP which are derived from said pigment, suffice the following relations: AR>0.5 BP or BR>0.5 AP, and AR+AP >BR. Thus provided is a solid color coating composition that can meet the requirements of mar resistance, acid resistance, storage stability, and excellent appearance.

Abstract: An object of the invention is to present a corona discharge processing apparatus capable of performing uniform and excellent corona discharge processing, on work of any thickness or shape, with the constant processing effect regardless of a thickness and shape of the work.A corona discharge processing apparatus of the invention comprises an excitation electrode and a counter-electrode, and generates a corona discharge by applying a high voltage between them, thereby applying corona discharge processing on the work, wherein the excitation electrode and the counter-electrode are both disposed on the same surface of the work with an interval between them.