Optical device of a copying apparatus
Optical focusing system
Optical mechanism for increasing optical path and office...
Optical member drive system for copying machine
Optical positioning apparatus for electrophotographic copying ma
Optical system and method for the production of...
Optical system featuring change in magnification by combined le
Optical system for electrostatic copiers
Optical system for projecting patterns comprising a constant-mag
Optical system for providing visual aid for proper magnification
Optical system supporting mechanism for an image processing equi
Optically imaging method and apparatus
Optically variable magnification mechanism
Parallel process focus compensation
Pattern transfer apparatus
Phase grating focus monitor using overlay technique
Photo enlarger remote focusing control
Photo-lithographic method to print a line-space pattern with...
Photocopying machine equipped with variable magnification arrang
Photographic apparatus and method