Patent ID: 6467887
Filing Date: 2002-10-22
Classification: B41J

Abstract:
A piezoelectric ink jet printing system comprisinga primary ink supply, a plurality of non-reciprocating piezoelectric ink jet printhead assemblies, each assembly comprising a housing, a piezoelectric ink jet printhead in the housing, a secondary ink supply attached to the housing adjacent the printhead, and an ink supply line for delivery of ink from the secondary ink supply to the printhead, the printhead of each printhead assembly comprising a linear array of ink orifices through which ink is ejected to print indicia on a surface, each printhead assembly further comprising a device for mounting the housing and printhead therein for rotation about a first axis extending generally perpendicular to said surface thereby to vary the height of the indicia printed on the surface by the printhead in the housing, and a device for locking the housing in a selected position of rotational adjustment according to the desired height of indicia to be printed, and the secondary ink supply of each printhead assembly being rotatably mounted with respect to the housing of the assembly so that when the housing of the printhead assembly is rotated in one direction about said first axis, the secondary ink supply may be rotated in an opposite direction to maintain the secondary ink supply in a selected predetermined attitude.