Electronic printing device and method for producing metal print item

A method for producing a metal print item, comprising the steps of:

• providing a reference capacitance value;
• providing an electronic printing device comprising:
• a print board including a substrate having a border region and an active region adjacent to the border region;
• a first print unit arranged on the substrate and disposed in the active region, and provided with a first print electrode and a first transistor having a gate end, a first end, and a second end electrically connected to the first print electrode;
• a first gate line arranged on the substrate, configured to extend along a first direction, and electrically connected to the gate end of the first transistor;
• a first sensing electrode arranged on the substrate and disposed in the active region;
• and a first sensing line arranged on the substrate and electrically connected to the first sensing electrode, wherein the first sensing line at least partially overlaps with the active region;
• and
• multiple print units including the first printing unit;
• in a printing stage, providing a first electrical energy to a first group of print units of the multiple print units of the print board to perform a first printing, so that the metal of the electrolyte is printed on the cathode board to form a first portion of the metal print item;
• in the printing stage, providing a second electrical energy to a second group of print units in the multiple print units of the print board to perform a second printing, so that the metal of the electrolyte is printed on the cathode board to form a second portion of the metal print item, wherein the second portion of the metal print item is formed on the first portion of the metal print item;
• in a sensing stage, measuring a detection capacitance value through the first sensing line;
• and
• adjusting a distance between the print board and the metal print item according to a difference between the detection capacitance value and the reference capacitance value.