Types of Codes
Julian Codes
For companies that process food, personal care products, pharmaceuticals, and other goods, Julian codes are printed on packaging to display packing dates for retailers and consumers. Gem’s Julian coding solutions for packaging include marking glass, metal, shrink-wrapped packages, and high density polyethylene and polypropylene product containers.
QR Codes
Printed QR codes are used in many different applications to enable anyone with a mobile device the ability to scan the code to obtain information about a product or service. Gem produces specialty marking fluids and equipment that effectively mark even the most difficult to print on surfaces with high-quality, durable QR codes.
Lot Codes
Lot codes identify production batches for traceability, allowing manufacturers to pinpoint specific runs in case of quality checks or recalls. Gem’s continuous inkjet printers apply crisp, permanent lot codes on plastic, metal, wire, cable, and flexible packaging — even in high-speed environments.
Date Codes (Expiration / Best-By / Use-By)
Date codes communicate freshness, shelf life, and regulatory compliance across food, beverage, and pharmaceutical industries. Gem’s systems ensure clear and legible date markings that withstand moisture, abrasion, and sterilization processes.
Batch Codes
Batch codes record manufacturing sequence and formulation details. For multi-line or variable data, Gem’s CIJ printers integrate directly with ERP or MES systems to automatically print the correct batch data on each product, eliminating operator input errors.
Barcodes (1D and 2D)
Linear (1D) and two-dimensional (2D) barcodes are used for scanning and inventory tracking. Gem’s inks are formulated to produce high-contrast, machine-readable marks that maintain scannability across porous and nonporous substrates.
Data Matrix Codes
Data Matrix codes are compact 2D symbols that store extensive product data in a small footprint, common in electronics, aerospace, and medical device packaging. Gem’s high-resolution printers and UV-curable inks deliver durable, high-density codes even on curved or reflective surfaces.
Serial Numbers
Serialized marking enables unique product identification for warranty tracking and anti-counterfeit control. Gem’s inkjet systems can automatically generate and increment serial numbers in real time, synchronized with production line speeds.
Model / Part Numbers
Printed model and part numbers help streamline assembly and inventory. Gem’s printers integrate easily with existing PLC or database systems to print accurate part identification directly onto cables, components, or housings.
Regulatory & Compliance Codes
These include FDA, CE, UL, or ISO markings that certify product safety and manufacturing compliance. Gem offers permanent, high-contrast printing solutions that ensure legibility for regulators and inspectors across harsh industrial environments.
Shift / Operator Codes
Shift or operator identifiers are printed on products to trace production back to the responsible team or machine. Gem’s variable data printing allows automatic shift changes based on time or line data, ensuring consistent, traceable output.
Promotional Codes
Promotional or contest codes link physical products to digital campaigns. Gem’s continuous inkjet systems print random or unique alphanumeric codes with precision, helping brands create secure, trackable promotions.
Bandmarking
Bandmarking is one of the oldest and simplest processes for marking and coding. Bandmarking is popular for applications used in electrical and telecommunications applications. Due to a variety of substrates including PVC, FEP, PFA and ETFE, it’s critical to choose the right marking fluids from Gem to ensure the mark is clear, legible, and durable.