Xerographic developer

Schmidlin (56) has pointed out that the commonly observed broad range of van der Waals forces between toner and carrier particles causes xerographic development to require much higher electric fields for toner release than those required to establish a sharp threshold. In fact, he argues that if the adhesive forces between these surfaces could be made sufficiently small and uniform ("noise-free"), it should be possible to reduce electrostatic charge density required for a given... 

Much needs to be learned about the microstructure, microscopic rheology, and electronic properties of particle-polymer composites, such as are met in aggregate photoconductors and xerographic developer materials. 

A highly sensitive CdS pigment was also developed for a conventional xerographic appHcation. Optimum xerographic properties were obtained using copper doping at Cu concentrations of 200—300 ppm (26). 

Therefore, the development of organic polymer materials was of critical importance to the success of xerographic technology (51). 

Just as the growth of xerographic copying and laser-printing, which derives from xerography, was a physicists triumph, the development of fax machines was driven by chemistry, in the development of modern heat-sensitive papers most of which have been perfected in Japan. 

As with the triarylamines, the triphenylmethanes were first developed for xerographic and photoconductor applications [103], The prototypical example of a material of this type is MPMP (58) shown in Scheme 3.22. 

From a commercial standpoint, except in the case of matnre technology associated with the xerographic process, the present state of development of amorphous... 

Mobility measurements by the TOP methods considered in Chapters 3 and 4 are particularly important, but they cannot give information about the whole spectrum of states in the mobility gap of amorphous chalcogenides. Therefore, in addition to TOP, XTOP, IPTOP, TSC, and TSDC, other complimentary techniques that probe the gap states are needed. Xerographic techniques that were initially developed to characterize properties of electrophotographic (xerographic) receptors [1] seemed to be informative, suitable, and widely applicable for the study of amorphous thin films and photoconductive insulator thin films [2],... 

Dark discharge rate must be sufficiently low to maintain an ample amount of charge on the photoreceptor during the exposure and development steps. A high dark decay rate will limit the available contrast potential. The residual potential remaining after the xerographic cycle must be small enough that it does not impair the quality... 

A transfer material has been developed for transferring monochrome and full-color images produced by a xerographic process or a dry toner printing onto a substrate. The process requires the use of a film from TPX as the transfer material. This material is used to transfer the xerographic or dry toner image onto the substrate with the application of heat and pressure (27). 

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