Apparatus for using ferrite spacers to suppress arc noise in ele
Aqueous alkali developable negative working lithographic printin
Auto-process film unit with removable folded sheet between negat
Auxiliary mordant layer for excess dye formed in integral color
Catalytic activation of cobalt complex imaging by cobalt
Channeled photosensitive element
Cobalt complex amplification imaging system with blocked dye pre
Color diffusion transfer photographic elements
Color diffusion transfer photographic materials with sulfone col
Color diffusion transfer photographic materials with vinyl copol
Color diffusion transfer photographic unit
Color diffusion transfer unit with polymeric quaternary nitrogen
Color light-sensitive material with spontaneously developable si
Color photographic light-sensitive material containing +-alkyl s
Color photographic materials with spiro heterocyclic stabilizing
Diazo copying material for secondary original
Diazotype materials
Diazotype materials with hydroxypropyl cellulose ether as anti-s
Diazotype reproduction layer formed from matrix of spheric parti
Diffusion retarding layers comprising polymers of dimethoxyethyl