Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Process and device for copying photographic color images










Image Number 2 for United States Patent #4050807.

A blocking filter is used, in conjunction with the substractive filter method of copying photographic color images, to remove or substantially remove by greatly weakening wave lengths from the copying light in the range in which the filter characteristics of the blue and green color filters or the spectral sensitivity curves of photographic copying paper overlap each other, or more particularly in a 30 nm belt about a central wave length of approximately 500 nm.








 
 
  Recently Added Patents
Tactile output device for computing device notifications
Systems and methods for determining muscle force through dynamic gain optimization of a muscle PID controller for designing a replacement prosthetic joint
Monitoring of undesirable fluid ingress into subsea control modules
Multi-contoured yoga support
Method and composition for improving skin barrier function
Carbon nanotube fiber spun from wetted ribbon
System and method for routing streaming data requests
  Randomly Featured Patents
Modulated laser source for optical storage
Distributed object classification
Speed-increased small boat
Method and device for measuring and adjusting valve clearance
Multiple gap magnetic reading head
Communication system for selecting communication method
Window boot
Head for compressor
Superconductor gate semiconductor channel field effect transistor
Knee pillow