A photo print is produced from image data. The liquid crystal composite material includes a liquid chemical compound represented by a general chemical formula 1In the formula, X1, X2 and X3 are selected from a group consisting of fluoro group, cyano group, trifluoromethyl group, trifluoromethoxyl group, nitro group and hydrogen atom and not all three X1, X2 and X3 being a hydrogen group. The upper housing part has the discharge opening, which is connected via a discharge channel and a discharge valve with the pump chamber.