Abstract: In an ink print head of sandwich type construction which works according to the bubble-jet principle, the heating elements, electric lines and contacts, as well as the shoot out openings are advantageously produced in the same chip by planar processing steps (back-shooter principle). The heating elements and the shoot out openings are arranged so as to be laterally offset relative to one another in such a way that the spreading direction of the steam bubble is directed opposite to the ink shooting direction. Such an arrangement results in a simple and accordingly inexpensive production of such ink print heads since all precision processing steps are advantageously effected in a planar process and joined on one element.

Abstract: A process for recording information on a recording substrate, in which a print head with number (a) of printing elements moves back and forth over print positions, one print line at a time. Partial numbers of printing elements form subgroups in accordance with predetermined formations specific to the print lines. These subgroups are allocated to the print positions of a print line and are formed by at least partly differing printing elements. The individual printing elements of the respective subgroup are selectively controlled at the print positions in accordance with print data to produce a print pattern line. On completion of a subsequent print pattern line, the predetermined formation for a subsequent print line conforms, at least on the continuation side, to the predetermined formation of the preceding print line. Stripes caused by line continuation errors or ink ribbon structure errors are distributed throughout the printed image so as to be vertically offset.