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Two-dimensional codes containing product information, lot information, serial numbers, etc., are printed directly onto LCD substrates using a laser marker or exposure device, and the 2-dimensional codes are read at each process.
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Sheet-feed Control of LCD Glass Substrates with Stringent Quality Controls


• This makes it easy to read direct marking, which is otherwise difficult to read.
• The retrial function and bank function allow stable reading of codes that are covered by a film. This also provides a countermeasure for printing fluctuations.
• System configuration and settings are easy, reducing the number of steps required for start-up.


Each individual substrate can be managed, so more accurate history management is possible.

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