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Inks save dough for tortilla maker

Switching inks and interfering with a preset ink handling system caused headaches aplenty at this tortilla manufacturer. Now operations are back to normal.

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When a plant engineer at Tia Rosa bakery decided to change ink-jet inks, he was just trying to save the company some "dough." What he didn't count on was putting thousands of lb of tortilla dough in jeopardy.

Based in Grand Prairie, TX, Tia Rosa is a specialty bakery manufacturing corn and flour tortillas for retail and foodservice markets in the Southwest and Mexico. The ink in question is used on five Codebox 2 Automatic ink-jet printers from Domino Amjet (Gurnee, IL). These coders are used to identify flexible film packages with a shift code, the initials of the operator and a pull-by date.

From the day the coders were first put to use in 1995, the ink used in them was one from Domino that met FDA requirements for food packaging materials. All five coders were running smoothly until November '97, when they started producing errors. It didn't take long to realize that a switch in inks had caused the problem.

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