Abstract: Photoconductive elements comprising a support, a .beta.-phase indium phthalocyanine charge generation layer and a charge transport layer have excellent photosensitivity in the infrared region of the electromagnetic spectrum.

Abstract: Electrophoretic migration imaging apparatus and method of the type using electrophotosensitive pigment particles are improved, e.g., as to image density and background, by providing an enlarged migration environment for the imaged electrode. In one embodiment the non-imaged electrode and pigment dispersion thereon are moved predeterminedly, in direction and rate, so as to supplant non-imaged electrode surface and dispersion presented to imaged electrode portions during each successive imaging sequence.

Abstract: An electrophoretic migration imaging process, apparatus, and materials useful therein are disclosed. Electrically photosensitive particles, at least some of which bear a positive polarity electrostatic charge, are disposed between two spaced electrodes. One of the electrodes has the surface thereof adjacent to the electrically photosensitive particles bearing a uniform layer containing an amount of a dark charge exchange material sufficient to provide a net change in charge polarity with at least a portion of said positive polarity particles upon electrical contact therewith in the presence of an electric field and in the absence of activating radiation. Imaging is accomplished byA. disposing the electrically photosensitive particles between the spaced electrodes, andB. substantially simultaneously1.

Abstract: An electrophoretic migration imaging process, apparatus, and materials useful therein are disclosed. Electrically photosensitive particles, at least some of which bear a positive polarity electrostatic charge, are disposed between two spaced electrodes. One of the electrodes has the surface thereof adjacent to the electrically photosensitive particles bearing a uniform layer containing an amount of a dark charge exchange material sufficient to provide a net change in charge polarity with at least a portion of said positive polarity particles upon electrical contact therewith in the presence of an electric field and in the absence of activating radiation. Imaging is accomplished byA. disposing the electrically photosensitive particles between the spaced electrodes, andB. substantially simultaneously1.