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
System for determining movement properties of a guided vehicle
Printing system, information processing apparatus, print job processing method, information processing method, program, and storage medium
Flame-retardant polyamide composition
Dual work function recessed access device and methods of forming
Behavioral fingerprint based authentication
Auto-provisioning of network services over an Ethernet access link
Method of allocating IP address of image forming apparatus using DHCP, image forming apparatus and system of allocating IP address using DHCP
  Randomly Featured Patents
Auxiliary handle for a shovel
Control and prevention of blackhead disease in birds
Pneumatic tire
2D central difference level set projection method for ink-jet simulations
Compounds and methods for immunotherapy and diagnosis of tuberculosis
Printing apparatus having data memory and method therefor
Polymeric surface treatment compositions
Cartridge shell and cartridge for blast holes and method of use
Soft absorbent tissue containing derivitized amino-functional polysiloxanes
Pick-up and laydown machine