Patent ID: 8403577

Claim:
A multicolor writing and painting instrument comprising: a tubular housing sized and shaped to be held by fingers of a user; a single, hard, wear-resistant nib at an end of the tubular housing, the nib having: a substantially-curved writing surface; and a plurality of tubes which each lead to the substantially-curved writing surface of the nib, the tubes forming a plurality of openings on the writing surface, the openings arranged in clusters of one or more openings, each cluster of openings lying approximately along a circumference of a common circle, the substantially-curved writing surface on the nib and the openings on them being configured so as to cause ink at only a subset of the openings to come in contact with a flat writing surface at any one time; a separate ink reservoir within the tubular housing for each cluster of openings; and a fluid delivery system within the tubular housing connected between each ink reservoir and the tubes which form the openings of one of the clusters of openings and configured to deliver fluid from the reservoir to which it is connected to the tubes to which it is connected.