A METERING DEVICE FOR PAINT FOR DIGITAL PRINTING

摘要

A paint injector (300) for digital printing in which paint is deposited in metered amounts on a print medium comprising a wheel (304) rotatable by a shaft (303) of a motor (324), an idler (308) disposed in a paint reservoir (306), and a segment of wire (302) disposed around the wheel (304) and the idler (308). The motor (324) is preferably computer controlled (350) such that the rotation of the wheel (304) and thus movement of the wire (302) is selectively controlled. As the wheel (304) is rotated, paint contained within the paint reservoir (306) coats the wire (302) and is thus drawn by the wire (302) in front of an air stream. The air stream pulls the paint from the wire (302) and carries it toward the print medium.