Abstract: A method of overcoating a conductive polymer support with an aqueous-based polymer coating comprises crosslinking the conductive polymer with hydrolyzed tetraethyl orthosilicate prior to overcoating. An electrophotographic element can be prepared by coating a support with a conductive layer comprising a conductive polymer crosslinked with hydrolyzed tetraethyl orthosilicate (polysilicic acid) and overcoating with an aqueous-based layer of an electrically insulating polymer containing a photoconductor.

Abstract: A process for the introduction of .DELTA..sup.11 unsaturation into steroid compounds having a C-12 sulfonate ester group is described. Dehydrosulfonation is carried out by reacting the sulfonate with a hexaalkylphosphoric triamide. The process is particularly useful with steroid compounds that also contain a blocked C-7 hydroxy group. The process yields the 11-enate in preference to the 6,11-dienate. The yield of the process can be increased by carrying out the reaction in the presence of a weak base.

Abstract: A photosensitive composition comprising a mixture of cadmium iodide and cuprous iodide is useful in photographic elements. The elements are imagewise exposed to radiation and conventionally developed to form an image.

Abstract: A novel copper (II) complex having the formula:[CuL.sub.n ](BAr.sub.4).sub.2,wherein L is a monodentate or polydentate ligand, Ar is aryl containing from 6 to 12 carbon atoms, and n is an integer of 2 or 4, is employed as an actinic radiation-sensitive component in an imaging process comprising imagewise-exposing a support carrying the copper (II) complex to actinic radiation and developing an image by direct printout or chemical or physical development. The complex has improved photographic speed and may be handled in room light prior to development.

Abstract: Polymers comprising quaternary nitrogen atoms and at least two aromatic nuclei in the polymer cation for each quaternary nitrogen atom are described. In one embodiment at least 1/3 of the units of said polymer comprise quaternary nitrogen atoms. In another embodiment polymers comprising at least two aromatic nuclei in the polymer cation, such as aryl groups, for each quaternary nitrogen atom can be used in photograhic elements to provide excellent mordants for dyes.

Abstract: A process for preparing photographic elements comprising a support, a layer containing an acid dye or acid dye precursor and a layer containing a dye mordant composition, said process comprising coating on a support with a substantially aqueous dispersion of a polymer containing units according to the formula: ##SPC1##Wherein A represents units of an addition-polymerizable monomer containing at least 2 ethylenically-unsaturated groups; B represents units of a copolymerizable ethylenically unsaturated monomer; Q is N or P; R.sup.1, R.sup.2 and R.sup.3 are independently selected from the group consisting of carbocyclic groups and alkyl groups; M.sup.- is an anion and x is from about 0.25 to about 5 mole percent; y is from about 0 to about 90 mole percent and z is from about 10 to about 99 mole percent; and applying a layer containing acid dyes or acid dye precursors. The polymeric mordants are especially useful in diffusion transfer processes.

Abstract: Amine salts of polyacetylenic compounds containing a carboxylate moiety, preferably in conjunction with a group capable of hydrogen bonding, have unusually high radiation sensitivity, and are useful radiation-sensitive components in imaging systems.

Abstract: A water-insoluble polymer comprising repeating units at least 1/3 of said repeating units having the formula: ##SPC1##Wherein R.sup.1 and R.sup.2 are hydrogen or alkyl and R.sup.3, R.sup.4 and R.sup.5 are alkyl groups wherein the total number of carbon atoms in R.sup.3, R.sup.4 and R.sup.5 is at least 12 and X.sup.-is an anion; is useful in dye mordant compositions in photographic elements. Preferred dye mordants comprise copolymers with styrene or methyl methacrylate.

Abstract: A manipulator is described for moving a platform in translation in a plane. An actuator is mounted for rotation about an axis aligned parallel with the plane. A manual control lever is pivotly supported by the actuator which engages the platform through a similarly pivotly mounted coupling device. The coupling device engages the platform through a universal sliding movement in a slot to enable pivot motions from the control lever to produce translational position changes of the platform. Low frictional engagements of the moving elements together with a selectable motion reduction enable minutely accurate manual positioning of the platform.

Abstract: A physical developer composition for latent images comprises a mixture of at least one copper salt and at least one nickel salt and a reducing agent for copper and nickel salts wherein the nickel and copper salts are in such proportions that upon reduction to a metal alloy, the alloy contains from 9 to 98 mole percent copper and from 2 to 91 mole percent nickel.

Abstract: Solvent soluble block copolyesters consisting essentially of units having the formula: ##EQU1## WHEREIN R is an alkylene radical containing at least 3 carbon atoms; R.sup.1 is an alkyl radical and R.sup.2 is an alkyl, alkaryl, aralkyl or aryl radical; A is an alkylene or arylene radical; a is an integer of at least 10; b is an integer of at least 1; c is an integer of at least 2; and d is an integer of at least 2; are formed by first reacting a dihalo-polydiorganosiloxane with a dihydric phenol or other diol and subsequently reacting the resulting reaction product with a dicarboxylic acid halide. These polymers are useful as release agents and leveling agents and find particular utility as abhesive materials for waterless lithographic printing plates.

Abstract: A class of pyrylium dyes, having at least one rigidized, nitrogen-containing heterocyclic ring fused thereto is described. The rigidized dyes are useful lasing components in lasing media.