bi metallic strip cause the pump diaphragm 22 to deform a change in the temperature of the bi metallic strip can be brought about for example by a thermo electric component suitably connected to an electrical circuit not illustrated the micropump integrated in the print head 1 shown in fig2 is electrostatically activated to this end there is a first electrode 36 attached to the side of the pump diaphragm 22 facing away from the pump chamber 12 opposite the first electrode on the first end plate 2 is a second or opposing electrode 38 the pump diaphragm can be actuated by means of electrostatic attraction or repulsion the differing electrical potentials of the first and second electrodes 36 38 can be brought about by connection to a suitable electronic circuit not illustrated as illustrated by fig1 and 2 the print head can operate with edge or side orifices the method of operation of the pump is not dependent on the method of operation of the print head the method of operation of a print head 1 with integrated micropump is illustrated by fig3 a 3e the description which follows applies to a print head with integrated thermally activated diaphragm pump it is self evident that the method of operation will be similar with other types of pump fig3 a shows the print head with the integrated micropump in its neutral position in addition to the ink supply orifice 6 the first end plate 2 also has a pressure equalization.