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
Systems and related methods of user-guided searching
Extract of Vanilla planifolia
Method and system for tracking mobile electronic devices while conserving cellular network resources
Virtual multi-cluster clouds
Signal processing apparatus, display apparatus having the same, and signal processing method
Washing machine
Water purification using energy from a steam-hydrocarbon reforming process
  Randomly Featured Patents
Methods of providing signal parameter information using delta-modulation and related systems and terminals
Data management system providing a data thesaurus for mapping between multiple data schemas or between multiple domains within a data schema
Direct-access team/workgroup server shared by team/workgrouped computers without using a network operating system
Beverage container and opening means
Device for the production of sol-gel globules in coarse and fine fractions
Regenerative laser device
Downhole tool
Method of dissolving contaminants from substrates by using hydrofluorocarbon solvents having a portion which is fluorocarbon and the remaining portion is hydrocarbon
Foot flush adaptor
Methods of identifying and isolating stem cells and cancer stem cells