The Vietnam Post and Telecommunications Group (VNPT) have implemented a camera based, data verification system from Lake Image Systems to read, inspect and verify variable data, inkjet printed onto prepaid telephone cards produced on its Edale Beta Press.

The existing vision system consisted of four low resolution cameras, which proved to be problematic and unable to meet the the company’s inspection demands. These were replaced with one 8K linescan camera from Lake Image Systems, capable of scanning the full width of the web at significantly higher resolutions, improving overall readability and enabling operational flexibility and efficiency. 

Previously, misreads of critical data printed on the card had resulted in the vision system stopping the press, severely impacting press productivity and reducing operator performance. Lake Image’s Discovery Multiscan software, with intelligent IQ functionality, provides intelligent data matching and ensures that cards printed using a low-resolution inkjet printheads can be correctly read. The data captured can be reconciled against the original datafile or database, as well. When an error is now detected, the nature of the error and its location on the web is precisely logged for subsequent offline inspection. The operator is then alerted via a light and buzzer alarm without stopping the press.

“The old vision system we had was giving us a few headaches” says Ngo Manh Hung, general director at VNPT. “Since implementing the system from Lake Image, we have experienced fewer stoppages, resulting in better overall productivity, as well as greatly reducing the setup time we had to allocate for each job.”

“With camera technology advancing so rapidly, we constantly strive to take advantage of the benefits that they bring,” adds Paul Stinson, vice president of sales at Lake Image Systems. “We are delighted that VNPT has chosen us for their inspection needs and how our system has helped them in streamlining their production processes.”