Lottery Ticket Paper Specifications: What You Need to Know

Lottery tickets must produce barcodes that are scannable at any angle and in any lighting condition. This requires thermal paper with high optical density (typically 1.2-1.4 OD minimum) and excellent barcode edge definition. Poor edge definition — caused by thermal spread in the coating — produces barcodes with ragged edges that fail to scan reliably.

The thermal sensitivity must be matched to the specific terminal model. Most lottery terminals use print speeds of 100-200mm/sec and print head temperatures of 60-80°C. Paper that is too sensitive will produce grey backgrounds; paper that is not sensitive enough will produce faint images.

Uniformity of the thermal coating is critical for lottery applications. Coating weight variations across the paper width produce density variations in the printed image, which can cause barcode scanning failures. Premium lottery paper uses precision coating technology to achieve coating weight uniformity of ±2% across the full paper width.

Lottery tickets must remain legible for the full validity period of the ticket, which can range from weeks to years depending on the lottery type. Standard thermal paper provides 5-10 years of image stability under controlled conditions; premium lottery paper achieves 25+ years.

Resistance to light is particularly important for lottery tickets, which may be stored in wallets, pockets, or on window sills. UV-stabilised thermal coatings and protective topcoats are available for applications requiring extended light resistance.

Chemical resistance is required for tickets that may contact common household chemicals, solvents, or cleaning agents. Top-coated lottery paper provides significantly better chemical resistance than uncoated grades.

Premium lottery paper incorporates security features to prevent counterfeiting and fraud. Common security features include UV-reactive fibres or patterns visible under UV light, watermarks in the base paper, void patterns that appear when the ticket is photocopied, and microprinting in the paper structure.

Some lottery operators require serialised paper with pre-printed sequential numbers or barcodes, enabling end-to-end ticket tracking from paper manufacture to terminal redemption.

Security features must be specified at the paper manufacturing stage and cannot be added retrospectively. Lottery operators should work with their paper supplier to define security requirements before placing initial orders.

Paper width is determined by the terminal model. Common widths for lottery terminals include 80mm, 112mm, and custom widths. Width tolerance is typically ±0.5mm; tighter tolerances may be required for high-speed terminals.

Core diameter and roll diameter must match the terminal specifications exactly. Standard core diameters are 12mm and 25mm; roll diameters range from 50mm to 200mm depending on the terminal capacity.

Paper weight (grammage) affects roll capacity and print quality. Heavier papers provide more rolls per pallet but may reduce the number of tickets per roll. Standard lottery paper is typically 55-65 gsm.