Insertable, multi-array print/cartridge

For use in ink jet printing apparatus, an insertable print/cartridge having (i) ink resrevoir means, (ii) at least two arrays of drop generating elements located in a parallel relation, (iii) a support for coupling said ink reservoir means and said drop generating arrays and (iv) an orifice plate comprising a plurality of linear orifice arrays aligned in spaced relation over respective drop generating arrays, said orifice plate:

• (a) being an integral element wherein the line patterns formed by said orifice arrays are precisely parallel and have a precise predetermined spacing therebetween and (b) having an integral, linear, indexing surface located precisely perpendicular to said line patterns of said orifice arrays.

For use in ink jet printing apparatus, an insertable print/cartridge comprising:

• (a) ink reservoir means, (b) two linear arrays of drop generating elements located in a parallel relation, (c) means for coupling said ink reservoir means and said drop generating arrays and (d) an orifice plate mounted over said drop generating arrays and comprising two linear arrays of uniformly spaced orifices aligned with respective drop generating elements, said orifice plate being an integral element wherein the linear patterns formed by said orifice arrays:
• (i) are precisely parallel, (ii) have a precise predetermined spacing therebetween and (iii) are precisely staggered in the direction of their linear dimensions by a distance S/2 where S is the center-to-center spacing of adjacent orifices of each array and wherein said orifice plate includes an integral, linear, indexing surface located precisely perpendicular to said linear patterns of said orifice arrays.