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​​Lot Code and Expiration Date Inspection with OCR​

From cartons and flexible packaging to consumer products, OCR systems ensure traceability, compliance, and product quality. Cognex vision systems combine advanced imaging, AI-powered OCR, and smart lighting to verify lot, date, and expiration codes across production lines – accurately reading even difficult or poorly printed codes in real time.

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Safeguard compliance and traceability with reliable batch code checks

​​In industries like food and beverage, where safety and compliance are critical, accurate product identification is non-negotiable. Misprinted or missing date, lot, batch, or expiration codes can disrupt supply chains, complicate recalls, and hurt consumer trust. Accurate codes show when and where a product was made, supporting quality control and global traceability. These codes are printed or stamped on products early in production, often combining linear barcodes (1D barcodes) with readable text to encode batch and manufacturing information.

Optical character recognition (OCR) and optical character verification (OCV) technologies reliably capture this information at both batch and item levels, ensuring codes are present, correctly printed, and compliant with labeling requirements. This verification helps maintain traceability, streamline quality inspections, and manage product recalls more efficiently.

​Modern OCR solutions are built for speed and precision, even on fast-moving lines and complex packaging, such as curved surfaces or reflective materials.

​​Reliable batch code checking for smooth operations​

​​Unreadable or poorly printed codes — caused by smudged ink, inconsistent printing, or reflective packaging — can lead to botched deliveries, insufficient stock, and frustrated customers. Traditional OCR systems must be programmed for each specific packaging background or design, which slows production as packaging designs multiply and evolve. These constant adjustments not only cause delays but also raise the risk of errors, complicating efforts to maintain consistent traceability and quality.

​To reliably read codes under any conditions, manufacturers need solutions that adapt easily to different surfaces, backgrounds, and printing styles – without constant reprogramming. Cognex OCR has the answer, offering unmatched ease of use, exceptional read rates, and high-speed performance to keep your production lines running smoothly.​

Cognex vision reads skewed text on food packaging

Cognex AI-powered OCR reads skewed, smudged text on irregularly shaped food products.​


Cognex solutions read date/lot codes and barcodes at the same time

Cognex solutions read date and lot codes and perform other inspections at the same time, such as reading barcodes or detecting defects.​


​​Elevate supply chain management with advanced OCR​

​​Cognex vision systems combine advanced imaging, AI-powered OCR, and smart lighting to verify lot codes, expiration dates, and other manufacturing data with speed and reliability. From individual units, cartons, flexible packaging, our systems ensure traceability, compliance and quality – even for seasonal promotions, special events, or new product formulations – even for seasonal promotions, special events, or new product formulations.

​Our solutions go beyond basic verification to handle the most challenging codes. For laser-engraved, dot-peen, or chemically etched Direct Part Marking (DPM) text, AI-powered OCR and OCV tools decipher deformed, skewed, or poorly marked characters, ensuring even difficult codes are accurately read and verified.  

​Key benefits of advanced Cognex OCR include:

  • ​Reliable verification of origin, date/lot, expiration, and other manufacturing data.
  • ​High-performance imaging with even, diffuse illumination.
  • ​Pre-trained omni-font library for identifying most text without additional programming.
  • ​Format verification (e.g., YYYYMMDD) to ensure codes are correct and readable.
  • ​Compliance with FDA UDI label requirements, including:

​With Cognex's global support, managing production and compliance is effortless – our experts are always ready to help you succeed.​

The Essential Guide For Automated Code Reading And Optical Character Recognition | English

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