Food producers and packaging businesses can use a handheld 12.7mm inkjet printer to mark expiry dates and other identification details on suitable packaging materials. Examples include compatible cartons, boxes, labels, and selected plastic packaging surfaces, depending on the ink formulation and printer specifications. Printing date information directly onto packaging can support stock rotation and help workers distinguish between production batches. The portable design is particularly useful for small food-processing operations that do not require a permanently installed coding line. Businesses should use inks approved for the intended packaging application and follow relevant food safety requirements. Clear, legible date marking helps support organized inventory management and responsible product handling.