Abstract: An infrared ray detector assembly for detecting a plurality of components such as hydrocarbons, CO.sub.2 and CO gases includes a housing member having a hollow interior and a portion transmissible to infrared rays and a holder member mounted within the hollow interior and having a plurality of separate compartments. An infrared detector is mounted in each compartment, and an optical filter is mounted over each compartment, abutting adjacent filters to respectively limit the wavelength band to each infrared detector, each optical filter having a substrate of approximately the same material and thickness.

Abstract: A crosslinked polymer liquid crystal is stretched to provide a polymer liquid crystal layer with a higher degree of uniform alignment than a non-crosslinked polymer liquid crystal. Such a stretched layer of crosslinked polymer liquid crystal is disposed between a pair of substrates to form a liquid crystal device showing a better contrast as a recording medium or display device. The improvement in alignment obtained by stretching of a crosslinked polymer liquid crystal is also effective in increasing the responsive characteristics in response to an electric field or magnetic field and also the pyro-electric effect of the resultant polymer liquid crystal layer where the polymer liquid crystal is a ferro-electric one.

Abstract: An optical image recording apparatus includes an image holding member comprising a polymer recording layer capable of recording and holding data through heat application, thermal recording means for applying heat to the polymer recording layer, a photosensitive member, and exposure means for recording the data recorded by the recording layer by the photosensitive member. The polymer recording layer is preferably composed from a polymer liquid crystal. The polymer recording layer and the photosensitivie member can be provided in a laminated form. The data recorded on the photosensitive member may be subjected to an electrophotographic image forming process.

Abstract: An optical modulation method comprises writing in a ferroelectric having a glass transition point at or above the glass transition point, and holding the resultant written state below the glass transition point. Preferably, the ferroelectric is formed in an optical modulation layer set to have an optical thickness capable of providing a multiple reflection state. The multiple reflection state of the optical modulation layer is locally changed at or above the glass transition point by irradiating the optical modulation layer under an electric field with a laser beam to write in the optical modulation layer.

Abstract: A recording medium having a recording layer comprising a polymer liquid crystal is used for multivalue recording by using at least two different liquid crystal phases at least two levels of locally different liquid crystal proportion, or thicknesswise difference in an optical variable, such as transmittance a reflectance, generally through controlled heating and cooling. In effecting the recording, two heating sources may suitably be used, one for imagewise heating and the other for supplemental heating.

Abstract: An image recording method and an image recording apparatus using an ink which is substantially non-adhesive but can be imparted with an adhesiveness when subjected to a pH change. In the image recording method, the ink is subjected to a pattern of pH change to be provided with an adhesive pattern, which is then transferred to a recording medium, such as plain paper, directly or by the medium of an intermediate transfer medium to form an ink pattern corresponding to the pH change pattern.

Abstract: A toner suitable for developing electrostatic images is produced through a process comprising: dispersing a monomer composition comprising at least a polymerizable monomer and a colorant in an aqueous medium heated at a temperature higher than a polymerization temperature, thereby to form particles of the monomer composition; adjusting the aqueous medium to the polymerization temperature; and adding a substantially water-insoluble polymerization initiator to the aqueous medium containing the particles of the monomer composition dispersed therein and adjusted to the polymerization temperature, thereby to cause the polymerization of the polymerizable monomer. According to this process, a toner containing a large amount of a low-softening point compound and having good fixability at low pressure and/or low temperature can be produced while retaining good anti-blocking characteristic and fluidity.

Abstract: A recording method utilizing a thin blended layer of two or more polymers which assumes a mutually dissolved transparent state below a predetermined temperature but a phase-separated opaque state above this temperature, in which a halftone reproduction is achieved through control of temperature applied to the thin layer.

Abstract: A sampling device for use with a gas analyzer, has an inlet, a changeover valve connected to the inlet, two branch passages having upstream ends connected in parallel to the changeover valve for having gas to be analyzed directed through one or the other thereof from the inlet depending on the position of the changeover valve, a further changeover valve connected to the downstream ends of the branch passages for opening the downstream ends of the respective ones of the passages when gas to be analyzed is being directed into the respective branch passages, and a capillary for each of the branch passages, each capillary having an upstream end connected to the corresponding branch passage and having the downstream end adapted to be connected to a detector for detecting components of the gas being analyzed.

Abstract: Thermal recording material has a plate- or film-formed polymer blend layer which is in a mutually dissolved transparent state below a certain temperature and in a phase-separated opaque state above said temperature. This thermal recording material is employed in an image display device, which is provided, in succession, with a recording heater movable along the recording material, an image display unit, a uniform heater and a gradual cooler for image erasure.

Abstract: A toner for developing electrostatic latent images is produced by a process comprising the steps of: (a) preliminarily dispersing a monomer composition comprising at least a polymerizable monomer and a colorant in a liquid dispersion medium which is substantially mutually-insoluble with the monomer and contains a fine powdery dispersion stabilizer, thereby to form a liquid dispersion containing the preliminarily dispersed monomer composition; (b) pressurizing the liquid dispersion up to a pressure of 10 kg/cm.sup.2 or above; (c) ejecting the dispersion into a low pressure section to form particles of the monomer composition; and (d) subjecting the particles of the monomer composition to suspension polymerization, thereby to produce toner particles.

Abstract: A gas analyzer for measuring the concentration of a gaseous component in a test gas includes first and second separate cells adapted to alternately be filled with a test gas containing a gaseous component to be analyzed and a standard gas, light sources for directing rays of energy through the first and second cells and through the test gas and standard gas alternately contained therein, a detector positioned to receive the rays of energy after passage thereof through the first and second cells for detecting the concentration of the gaseous component within the test gas, and a changeover device connected to the first and second cells and adapted to be connected to sources of the test gas and the standard gas for alternately supplying the test gas and standard gas, at fixed intervals and in fixed amounts, into the first and second cells.