Color imagers

CYlionic nicthine dye u.sed to 1002 ohtaln positive colored image in an Ag-free photobleaching process... 

Me Me R-CH=CH-(R Heteroan. salts) Used to cibiain ] positive colored images with a cop nng material 541... 

CD ROM set includes electronic files of all full color images m the text Import the images into your own presentation or use the PowerPoint presentation provided for each chapter... 

In most color photographic products, organic compounds such as couplers or redox dye releasers are added to the melted emulsions before coating. These compounds are essential to the development reactions that produce the dye molecules composing color images. 

The integral film format required different processing chemistry and film components from those used previously. The processed film unit needed to contain all of the reaction products along with the final color image. Polaroid followed the original SX-70 film with Time-Zero SX-70 film (1979), 600 film (1981), Spectra film (1986), and 600 Plus film (1988). 

Fig. 15. Schematic cross section of Kodak PR-10 integral film. This film is exposed through the transparent covet sheet, and the color image is formed by...

Fig. 17. Schematic cross section of Agfachrome-Speed film. During processing of this single-sheet film, dyes released by reduction in unexposed areas diffuse from layers of the negative to the image-receiving layer to form the positive color image (5).

Fig. 22. Micrographs of Polachrome film, (a) is a cross section of the unprocessed film (lOOOX) (b) is portion of a red image area after processing, with dense positive silver overlying the blue and green lines (250X) (c) and (d) are portions of a hiU color image, showing the image stmcture at 30X and 500X.

The need to obtain color hard copies from electronic systems such as TV and video sets, or from personal computers, has been increasing. Several methods have been proposed to obtain hard copies of full color images. Among them, sublimation thermal-transfer printing has the following characteristics the quaHty of the printed color picture is extremely high, and the equipment is compact, quiet, and easy to manipulate as well as to maintain. 

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