Method and apparatus for printing a ribbon for packaging gelatin capsules
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United States of America Patent
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May 8, 2007
Grant Date -
Mar 27, 2003
app pub date -
Sep 6, 2002
filing date -
Mar 20, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
Apparatus for producing image bearing filled gelatin capsules (12 and 16) for directing gelatin ribbon (2,4) from respective casting drums to an encapsulation station (6). Along the path of at least one ribbon (4) is a transfer station (18) at which images are applied to the ribbon. The images are applied in a pattern which corresponds to the pattern of capsules formed from the ribbon at the encapsulation station (6). Both the rollers (8) at the encapsulation station, and a support roller at or adjacent the transfer station are positively drive, and a control system ensures that the peripheral speed of a support roller (16) in the transfer station (18) is the same as the speed of the ribbon into and through the encapsulation station. The drive motor for the respective support roller in the transfer station is preferably a stepping motor, adjustable to advace or retard relative to the ribbon spped in the encapsulation station (6). Sensors (28, 64) may be included to postiviely monitor the alignment of ribbon with the encapsulation process. Provision is also made for monitoring the lateral positioning of images on the ribbon, and for shifting the ribbon to accommodate any lateral misalignment.
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