Abstract: A rotary drum processor (10) having a closed interior which is partly filled with liquid. An electrical immersion heating element (19) is mounted within the drum (10) so that it is always immersed in the liquid. Electrical power is supplied to the heating element (19) through a rotary transformer (24) outside the drum.

Abstract: When an exposure counter in a single-use camera indicates that the maximum number of exposures on a roll of film in the camera have been exposed, a function of the camera such as an electronic flash capability is disabled to prevent unauthorized recycling of the camera. A reset code must be inputted to the camera to initialize the exposure counter and to enable the electronic flash capability, to permit authorized reuse of the camera with another roll of film.

Abstract: The invention relates to providing a method of toning a black-and-white image formed with color couplers comprising providing a developed image, applying a hue changing material to said print wherein the hue of at least dye in said print is changed.

Abstract: An apparatus for processing photosensitive materials, which comprises: a tank through which a processing solution flows; a rack having integral means to facilitate its insertion and removal from the tank, the rack and the tank are relatively dimensioned so that a small volume for holding processing solution and photosensitive material is formed between the rack and the tank; means for circulating the processing solution through the small volume; and means coupled to the rack for moving the photosensitive material through the small volume.

Abstract: A storage phosphor radiography patient identification system which matches a patient with an x-ray image of the patient stored in a storage phosphor. The system includes a patient identifying bar code--uniquely identifying a patient; a storage phosphor identifying bar code uniquely identifying a storage phosphor and a portable bar code scanner. The bar code scanner is used to scan the patient bar code and the storage phosphor bar code when a patient is exposed to an X-ray which is stored on the storage phosphor. Preferably, a portable x-ray source has a chart having sets of bar codes identifying x-ray examination type information. The bar code scanner scans the examination type bar codes at the time the x-ray of the patient is taken. The storage phosphor has a non-volatile read/write memory adhered to it. The bar code scanner has a memory probe which transfers the patient ID, storage phosphor ID and exam time information from the bar code scanner to the storage phosphor memory.

Abstract: A coating composition for applying a layer to a photographic element which comprises gelatin, water and from 0.35 to 1 percent by weight based on the total weight of the composition of a surfactant mixture comprising from 20 to 60 percent by weight of a mixture of anionic surfactants, from 30 to 75 percent by weight of a nonionic surfactant and from 3 to 13 percent by weight of a cationic surfactant based on the total weight of surfactant mixture; the mixture of anionic surfactants comprising from 30 to 85 percent by weight of di- and tri-isopropyl naphthalene sulfonate, sodium salts and from 15 to 70 percent by weight of a dioctyl sulfosuccinate, sodium salt; a di-fluoroalkyl sulfosuccinate, sodium salt where alkyl is C.sub.4 -C.sub.6 ; perfluoro-octyl sulfonate(tetraethyl ammonium salt) or a perfluoro-alkyl carboxylate ammonium salt where alkyl is a mixture of C.sub.5 -C.sub.

Abstract: Herein is disclosed a differential densitometer for continuously measuring total undissolved solids in a liquid. The densitometer comprises:a) a first densitometer having liquid inlet and outlet;b) a second densitometer having liquid inlet and outlet; andc) a filter connecting the outlet of the first densitometer to the inlet of the second densitometer.

Abstract: Instead of trying to minimize some cost function of color errors, the present invention exploits physical models of scene-image relations. An image is first segmented into regions corresponding to objects in the physical world. Each object is then painted with a few levels of shades of the same chromaticity. This is motivated by the observation that physical objects are the basic units for human visual perception. Chromatic variations within an object surface tend to be grossly discounted by our color vision, and therefore, it is not necessary to render those variations accurately. Furthermore, since the shading across an object surface spans a much smaller dynamic range as compared to the whole scene, the limited number of color shades can be more effectively used within a segmented image region.

Abstract: A clamping arrangement essentially comprising two lever arms driven at one end by a solenoid and having a resilient clamp pad mounted on a flexure member at the other end thereof. The clamp pad is made of a resilient material such as, for example, urethane and has four non-parallel side walls defining an upper face which is complementary to the radial face of the scanning apparatus gate. The sloping side walls of the clamp pad act as a light baffle to prevent reflected light from entering the imaging lens, and the pad is gimballed so that any variations between the upper surface of the clamp pad and the radial surface of the gate will be eliminated attain as perfect a match therebetween as is possible. In another embodiment of the clamping arrangement, a single arm can be utilized in place of the dual arm arrangement described above. The single arm has a Y-shape in which the clamp pad is supported on the branched end of the arm and the solenoid drives the single member.

Abstract: A method of processing an imagewise exposed photographic silver halide colour material by a redox amplification method in wherein colour developing solution is applied to the material in the presence of atmospheric oxygen and a hydroxylamine compound of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are each an alkyl or aryl groups either of which may be substituted, andwherein the colour developer solution is agitated sufficiently for redox amplification to occur.

Abstract: A magnetic recording medium has recorded thereon a series of discrete time-limited servo signal bursts. To suppress residual fields emanating from each servo signal burst, at least one half-cycle of a compensating signal is recorded immediately prior to and immediately after each signal burst of a polarity opposite the polarity of the immediately adjacent half-cycle of the servo signal burst. Furthermore, each half-cycle of each compensating signal has a magnetic moment that is weaker than the magnetic moment of one half-cycle of the immediately adjacent servo signal burst.

Abstract: The invention provides a cyan color producing silver halide emulsion layer or a magenta color producing silver halide emulsion layer wherein said at least one layer has an exposure range of at least 0.6 log E from the point where the instantaneous contrast is 1.0 and wherein the instantaneous contrast of said layer increases as a function of increasing exposure over at least 70 percent of said exposure range.

Abstract: Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating include an adhesive interlayer interposed between the imaging layer and a protective overcoat layer. The adhesive interlayer, which is comprised of a polyalkoxysilane, strongly bonds the overcoat layer to the imaging layer.

Abstract: Spectral sensitizing dyes, and silver halide photographic elements incorporating them, which dyes have the formula: ##STR1## wherein: X1 and X2 each independently represent the atoms necessary to complete a 5- or 6-membered heterocyclic nucleus (preferably benzo-condensed), and X1 may be further substituted and X2 substituted or unsubstituted;n is a positive integer from 1 to 4,p and q each independently represents 0 or 1,each L independently represents a substituted or unsubstituted methine group,R1 and R2 each independently represents substituted or unsubstituted aryl or substituted or unsubstituted alkyl,Z1 represents a substituted or unsubstituted pyrrole or furan containing group;W1 is a counterion as needed to balance the charge of the molecule.

Abstract: A disulfide compound represented by the following formula: ##STR1## wherein X is independently --O--, --NH-- or --NR--, where R is a substituent;m and r are independently 0, 1 or 2;M is --H or a cationic species;Ar is an aromatic group; andL is a linking group, where p is 0 or 1.A silver halide emulsion comprising said disulfide compounds and a photographic element comprising a silver halide emulsion in reactive association with said disulfide compounds and a method of making same.

Abstract: A camera has a deployable cartridge receiving chamber that is supported for opening movement unidirectionally about one pivot and bidirectionally about another pivot point.

Abstract: A frequency tunable waveguide extended cavity laser formed with a laser diode, a channel waveguide comprising an electro-optic material, a frequency tunable Bragg grating reflector formed in or on the channel waveguide and a pair of conducting electrodes. The frequency of radiation produced by the frequency tunable waveguide extended cavity laser is adjusted so as to be at a desired frequency by applying a voltage to the conducting electrodes. The device further incorporates a waveguide nonlinear optical frequency converter to produce frequency convened radiation at a higher frequency. Feedback means are included for dynamically controlling the desired frequency so as to be at a frequency for optimum frequency conversion.

Abstract: A mulitchannel optical waveguide page scanner has a diode laser and a primary optical channel waveguide. Light is coupled from the diode into the primary channel waveguide. Multiple secondary side channels each have a thin-film electro-optic waveguide modulator. A series of T-branch connectors distribute light from the primary channel to the secondary side channels. Each of the electro-optic waveguide modulators is addressable individually.

Abstract: It is well known to use a transport belt to transport material being processed through photographic processing apparatus. In some arrangements, water is used to hold photographic material against the belt using surface tension. However, other means are needed to apply processing solution to the sensitized surface of the material being processed. Described herein is an arrangement in which the transport belt (10) is used to both transport the material (32,34) through the apparatus and to apply processing solution (18) to the sensitized surface.