Abstract: A method and apparatus for mapping land can create overlapping images of portions of a strip of land, assign to those images geographic coordinates calculated in real time from initially stored coordinates of a first predetermined templated image, such that a series of images can be accessed from a storage medium to be displayed as a video map of the strip of land without manually assigning geographic coordinates to it. The method and apparatus can also be used to electronically measure the portions of the strip of land, and determine the geographic elevation of points on the strip of land.

Abstract: An acid photographic fixing agent adapted for colour photography utilizing silver coating rates of up to 2.1 mg/dm.sup.2 whereby stabilized thiosulfate fixer solution has a concentration of less than 10 gpl of ammonium thiosulphate or its chemical equivalent, comprising a solution of an alkali metal thiosulphate or an ammonium thiosulphate or a mixture thereof stabilized by a soluble sulphite or bisulphite; characterized in that the ratio by weight of the soluble sulphite to the thiosulphate is greater than 1.2:1 or greater than 1.44:1 if the bisulphite is used; thereby to preferentially maintain the thiosulfate in use.

Abstract: The present invention relates to a photoelectrographic element having a conductive layer in electrical contact with an acid photogenerating layer which is free of photopolymerizable materials and contains an electrically insulating binder and acid photogenerator. A pigment which absorbs near-infrared radiation is included in the photoelectrographic element so that the element, when used in electrostatic copying, can be exposed with near-infrared radiation. A method for forming images with this element is also disclosed.

Abstract: A method of recovering silver from used photographic fixer solutions characterized in that the solution contains an alkali metal sulphite as the sole silver halide solvent.

Abstract: A low volume thin tank photographic development apparatus has a narrow passage which has a width which is adjustable by placing strips of chemically inert material at the edges of the passage. The strips may be wound on rollers, and the strips may be stepped so that they are of different dimensions, to accommodate different webs of photographic material being processed. The use of the strips ensures that the minimum quantity of photographic processing solution is used.

Abstract: A method is presented for achieving constant purification cycle times over the life of an ultrafiltration membrane in a silver halide purification system. Silver halide emulsion pumped from a feed vessel enters an ultrapurification module wherein a permeate stream is separated from the emulsion. The permeate stream is then divided into a permeate-to-drain stream and a recycle stream. The recycle stream is returned to the feed vessel. By varying the amount of permeate recycled, a constant permeate-to-drain rate can be maintained, and hence the purification cycle time can be maintained constant despite fouling of the membrane.

Abstract: A photoelectrographic element for electrostatic imaging, containing a conductive layer and a photosensitive layer, is produced using photosensitive layer materials which form a barrier to charge injection where exposed to near-infrared radiation. As a result, exposed areas can be charged, while unexposed portions cannot. The photosensitive layer contains an organic photoconductor, a near-infrared radiation sensitizer, and, optionally, an organic binder. A method of forming images with this phctoelectrographic element is also disclosed.

Abstract: A photoconductive element of smooth surface comprises a single aggregate photoconductive layer which contains an aggregate photoconductor and at least three organic charge transport agents. In a preferred embodiment the aggregate photoconductive composition is formed from a high molecular weight alkylidene diarylene polycarbonate and is mixed with at least five organic charge transport agents and the element is overcoated with a thin, smooth, abrasion-resistant layer of silicon carbide. The smooth surface of the photoconductive element has a 20.degree. gloss greater than about 6 and is resistant to scumming by fine toner particles.

Abstract: Electrophotographic elements contain certain chemical compounds as electron-transport agents, which are substituted derivatives of phospha-2,5-cyclohexadiene. These compounds have good solubility or dispersibility in organic solvents and polymeric binders, and they exhibit good electron-transport properties in electrophotographic elements.

Abstract: The present invention relates to a fluid conditioning system having a primary distribution channel configured to distribute coating fluid transversely. Fluid from the primary distribution channel is carried by a second conduit to a secondary distribution channel which is configured to minimize transverse pressure gradients in fluids having Reynolds Numbers of up to 50 without substantial formation of eddies. A product conduit withdraws liquid from the secondary distribution channel. This fluid conditioning system is particularly useful in applying photographic liquids to a web of photographic film or paper. For this utility, the system can be incorporated in a conventional slide hopper between adjacent layering plates or the liquid-applying plate and its adjacent layering plate.

Abstract: A method of fusing an electrostatographic colored toner image on a transparent support to provide a projection viewable color transparency exhibiting excellent color clarity. The support comprises a polymer layer bearing the color toner image. The toner image and the polymer forming the layer on the support have a loss tangent value of at least 1.6. The transparent element is subjected to fusing in three distinct zones; a fusing zone where it is contacted with a textured fusing member, a cooling zone where contact with the fusing member is maintained and the toner image is cooled and a release zone where the toner image is released from the fusing member at a temperature where no toner image or polymer layer offset occurs.

Abstract: Electrostatographic toners and developers are provided containing styrene-acrylic copolymer binders and charge-control agents comprising fluorinated .beta.-diketone metal complexes having the structure: ##STR1## where R is alkyl or aryl,M is calcium, barium or zinc, andn is a positive number up to 7.

Abstract: In a guar-flour-containing drink and tube food by adding sodium alginate and/or agar-agar a stabilizing is achieved and the precipitation of the hydrocolloid guar flour during storage prevented.

Abstract: Disclosed are electron-transport polymeric liquid crystalline compounds having the formula (I) ##STR1## wherein A and B are alkylsubstituted siloxane or acrylate repeating units;S.sub.1 and S.sub.2 are alkylene spacer groups;L is a mesogenic group;ET is an electron-transport functionality; andx and y are integers, the ratio of x to y is from about 100 to about 0.1, the sum of x and y is from about 5 to about 100.Multi-active and single active electrophotographic elements comprising these compounds and electrophotographic processes are also disclosed.

Abstract: Toner fusing members with improved properties are formed with an outer layer comprising a melamine-cured polyurethane coating composition. Such a polyurethane is formed by polycondensation of a diisocyanate, and a polysiloxane diol containing units of 2,2-bis(4-hydroxyphenyl) hexafluoropropane.

Abstract: An electrophotographic element comprises a single aggregate photoconductive layer which contains a continuous phase that has a high glass transition temperature T.sub.g, of at least about 110.degree. C. The required high glass transition temperatures can be obtained by using compositions for the aggregate photoconductive layer that contain organic charge transport agents with high glass transition temperatures or polymer binders with high glass transition temperatures, or combinations of both. In a preferred embodiment an aggregating bisphenol A polycarbonate is used in combination with a cobinder polymer that has a high glass transition temperature. The electrophotographic element of the invention can be dried at temperatures of at least about 100.degree. C., and preferably from about 110.degree. C. to about 145.degree. C., to eliminate the solvent used in coating.

Abstract: Disclosed are hole-transport polymeric liquid crystalline compounds having the formula (I) ##STR1## wherein A and B are alkylsubstituted siloxane or acrylate repeating units;S.sub.1 and S.sub.2 are alkylene spacer groups;L is a mesogenic group;HT is a hole-transport functionality; andx and y are integers, the ratio of x to y is from about 100 to about 0.1, the sum of x and y is from about 10 to about 500.Multi-active and single active electrophotographic elements comprising these compounds and electrophotographic processes are also disclosed.

Abstract: The present invention relates to a photoelectrographic element having a conductive layer in electrical contact with a acid photogenerating layer which is free of photopolymerizable materials and contains an acid photogenerator, a pigment which absorbs near-infrared radiation, and, preferably, an electrically insulating binder. Contiguous with the acid photogenerating layer is a charge transport layer formed from a polymeric binder and one or more charge transport materials. A process for forming images with this element is also disclosed.

Abstract: A plasmid which contains a genetic code for an immunogenic portion which is conserved in many strains of nontypable Haemophilus influenzae and the bacterium containing this plasmid is disclosed. The immunogenic portion is preferably an epitope on an outer membrane protein of H. influenzae. A monoclonal antibody to the immunogenic portion and the hybridoma which will produce the monoclonal antibody is also included. The invention further includes a DNA probe constructed to correspond to the nucleic acids which code for the immunogenic portion. This probe may be labelled with a radioactive marker and may be used as a diagnostic tool to assay various clinical samples for the presence of H. influenzae.