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
Cosmetic or pharmaceutical peptides containing uncoded amino acids and their use in the treatment and/or care of the skin, mucous membranes, or scalp
Circuit design approximation
Synthesis of amines and intermediates for the synthesis thereof
Asymmetric switching rectifier
Method for restricting the use of an application program, system for authenticating the user of a measuring apparatus, authentication server, client apparatus and storage medium
Optical switching device and communications system
Method for assembling a camera module, and camera module
  Randomly Featured Patents
Nucleic acids encoding mutants of MAW motifs of RecA protein homologs
Apparatus for controlling horses
Method for protecting a data memory
Stripping a solution containing molybdenum, tungsten and/or vanadium values
Pseudo-differential current sense amplifier with hysteresis
Wall-mounted single-handle mixing faucet
Optical pickup using an optical phase plate
Video signal processing
Interactive dynamic range adjustment system for printing digital images
Hair styling iron for straightening and curling