The present invention relates to for operating food printer (1), and the household electrical appliance (9) that there are food printer (1) installing mechanism (7) to be designed into installation food printer (1) processing compartment (8) in this way, especially at (9a) of cooking compartment (8a) domestic oven and/or in the refrigerator of refrigerating chamber, the present invention relates to household electrical appliance (9), especially domestic oven (9a) and/or Domestic refrigerator, it is designed with electrical interface (16) to be electrically connected the household electrical appliance (9) of food printer (1) the type, especially domestic oven (9a) and/or to domestic refrigerator, and/or the actuating food printer.