A handheld inkjet coding printer provides a convenient way to print product information directly onto different surfaces. It can be used for batch numbers, dates, serial numbers, barcodes, logos, and short messages. Its portable design makes it easy to move between production areas and workstations. The printer is suitable for cartons, plastic, metal, glass, wood, bags, packaging materials, and other compatible surfaces. It is useful in manufacturing, retail, warehouses, workshops, food packaging, and small businesses requiring flexible product identification.