SED-SPMJ-D — Handheld Inkjet Code Printer

Operator selects a saved file or types/pastes a string on the touchscreen. As the printer is moved across the substrate, the synchronous wheel drives an internal encoder; the encoder triggers the cartridge nozzle to fire ink in the correct cadence so the printed image preserves aspect ratio at any sweep speed. Alternatively, a photoelectric sensor on the assembly line triggers each print at a configured delay. The HP-style ink cartridge sits at the front; voltage is set per ink type (oil 9.0V, water 11V). The internal encoder and inkjet nozzle render the rasterized character set or BMP at up to 150 vertical pixels per pass.