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
Time-shifted transport of multi-latticed video for resiliency from burst-error effects
Coated article and method for making the same
Cryptographic authentication apparatus, systems and methods
Integrated process for producing ethanol
Direct memory access (DMA) address translation between peer-to-peer input/output (I/O) devices
Orthogonal frequency division multiplexing-code division multiple access system
Method and apparatus for memory fault tolerance
  Randomly Featured Patents
Sleeve mounting and removal tool
Brake lining, particularly for a vehicle drum brake
Methods and systems for managing consumer transactional accounts
Vehicle drive control system and method
Suspension unit for active suspension system
Motor vehicle vibrating system
Disc cartridge loading mechanism with an oscillating gear and two levers controlling a cover and the ejecting of a disc from the disc player
Method of treating emesis and itch
Method of electrical discharge machine with simultaneous relative advance and cyclic translational movement of the electrodes
Stereoscopic image display device comprising transmissive liquid crystal display element