Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Bi-directional registration of servo indexed webs










Image Number 3 for United States Patent #5000725.

A bag machine fabricates plastic bags by transversely cutting and sealing, at regularly spaced preselected locations, an elongate plastic web having graphic material repetitively printed thereon. In operation, the bag machine advances the web by a calculated draw length, and an optical sensor, sensitive to the passage of eyemarks printed in regularly spaced locations on the web, functions to ensure that the web is cut and sealed only at the desired locations. To avoid inaccuracies resulting from a gradual variance between the nominal draw length and the actual distance between eyemarks, a control system monitors the actual distance between eyemarks and sets the nominal draw length to the average actual spacing between eyemarks as measured over a preselected number of successive eyemarks.








 
 
  Recently Added Patents
Analyte assaying by means of immunochromatography with lateral migration
Encoding digital content based on models for predicting similarity between exemplars
Control method and allocation structure for flash memory device
PCSK9 antagonists
Asynchronous loading of scripts in web pages
Quantitative sleep analysis system and method
Systems and methods for automated institutional processing of payments
  Randomly Featured Patents
Sizing tag
Projector with lens height adjusting function
Acid diverting system containing quaternary amine
Method for forming laterally varying doping concentrations and a semiconductor device
Pull tab
Buoy for storing rope connected to an underwater article
Cradle for an electronic device
Miniature speaker device and television set
Singleshot anastomosis instrument with detachable loading unit and method
Timing recovery in a packet network using a buffer