Image latent

The image reader, which converts the induced latent image in the TP into analog signals and subsequently into a time sequence of digital signals ... 

The process of image forming in GDC can be divided into several stages formation of a latent electron-ion image, amplification of a latent image in a pulse gas discharge and production of a visible half-tone image. 

Fayet P, Granzer F, Hegenbart G, Moisar E, Pischel B and Woste L 1985 Latent-image generation by deposition of monodisperse silver clusters Phys. Rev. Lett. 55 3002... 

Microcrystalline grains with latent image centers... 

Coating containing a mixture of amplified latent image centers (ie, developed silver)... 

Chemical Sensitization. After the photographic microcrystals are precipitated but before they are coated on a support, the crystals are treated to enhance their sensitivity to light. Chemical sensitization is a process which improves that abiUty of the emulsion grains to use the absorbed photons, independent of the wavelength. Various methods of post-precipitation chemical sensitization have been developed to reduce the number of photons required to produce a developable latent-image center. 

As in chemical sensitization, spectral sensitization is usually done after precipitation but before coating, and usually is achieved by adsorbing certain organic dyes to the silver haUde surfaces (47,48,212—229). Once the dye molecule is adsorbed to the crystal surface, the effects of electromagnetic radiation absorbed by the dye can be transferred to the crystal. As a result of this transfer, mobile electrons are produced in the conduction band of the silver haUde grain. Once in the conduction band, the electrons are available to initiate latent-image formation. 

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