Abstract: In the method for checking a container inspection system with at least two detection devices, the at least two detection devices are configured to check a first and a second area of the containers to be inspected. A test container is fed to the container inspection system. The test container has a test feature in a first area to be inspected and a marking in a second area to be inspected, which is read by one of the detection devices and with which the test container can be identified as a test container. Also disclosed is a test container for use in connection with the disclosed method.

Abstract: An optical fiber mounting waveguide device includes a substrate, an optical fiber mounting groove provided on a part of the substrate for mounting an optical fiber, an under cladding layer and a core sequentially formed on the substrate, and an over cladding layer formed on the core, the over cladding layer having an end surface facing to the optical fiber mounting groove, and wherein the core and the under cladding layer are protruded toward the optical fiber mounting groove with respect to the end surface of the over cladding layer.

Abstract: In embodiments described herein, a memory architecture has an array of non-volatile memory cells and a pair of independently controlled voltage pumps. The pair of voltage pumps is coupled for supplying both positive and negative voltage biases to the memory array during program and erase operations, such that a sum of the magnitudes of the positive and negative voltage biases is applied across a storage node of an accessed memory cell.

Abstract: In holographic recording, it is important to form stably an interference fringe between a reference beam and a signal beam in a holographic storage medium. To suppress factors degrading stability of the interference fringe, such as fluctuation of atmospheric air, position displacement of optical components and the like during propagation of the reference and signal beams, an optical pickup and an optical information recording/reproducing apparatus adopt an optical system structure providing a higher proportion of optical components shared by the reference and signal beams optical path than conventional optical system structure. To increase the proportion of shared optical components, the signal beam and the reference beam pass through the PBS prism as parallel beams and a concave lens is placed on a reference beam path just before the objective lens.

Abstract: An electrode master for ferroelectric recording records information on a ferroelectric recording medium in which the direction of polarization of a ferroelectric material has been unified in one direction by applying a voltage thereto, based on the direction of polarization of the ferroelectric material, by applying voltage pulses to the ferroelectric recording medium. The electrode master includes an electroconductive base material; a plurality of electrode convexes provided on a surface of the electroconductive base material so as to correspond to information to be recorded on the ferroelectric recording medium; and an electrode terminal conducted to each of the electrode convexes and provided on the electroconductive base material.

Abstract: A waveguide includes a cladding region that has a refractive index that is substantially uniform and surrounds a wave-guiding region that has an average index that is close to the index of the cladding. The wave-guiding region also contains a thin ring or series of rings that have an index or indices that differ significantly from the index of the cladding. The ring or rings enable the structure to guide light.

Abstract: A thermally programmable memory has a programmable element (20) of a thermally programmable resistance preferably of phase change material, material and a blown antifuse (80) located adjacent to the programmable material. Such a blown antifuse has a dielectric layer (100) surrounded by conductive layers (90, 110) to enable a brief high voltage to be applied across the dielectric to blow a small hole in the dielectric during manufacture to form a small conductive path which can be used as a tiny electrical heater for programming the material. Due to the current confinement by the hole, the volume of the material that must be heated in order to switch to a highly-resistive state is very small. As a result the programming power can be low.

Abstract: A CD-ROM has an obscurable section wherein exists a photosensitive mask material layer or constituent operative to alter the optical properties of areas subjected to prolonged exposure to the CD-ROM read laser radiation. Digital information stored on a CD-ROM is made accessible by use of a password, which is generated from user machine unique information, and which is written on the CD-ROM via selective exposure of the CD-ROM to the radiation used to read the CD-ROM.

Abstract: Input stage having increased input signal noise margin and method for generating an output signal having a predetermined logic level based on the voltage level of an input signal. The input stage includes an input buffer generating an output signal having a logic level based on the voltage of the input signal relative to the voltage of the reference voltage signal. A voltage generator provides a variable output voltage signal that is used as the reference voltage by the input buffer. The voltage of the output voltage signal provided by the voltage generator is dependent on the logic value of the output signal of the input buffer. In this manner, the reference voltage applied to the input buffer can be adjusted based on the logic level of the outputs signal in order to provide increased input signal noise margin.

Abstract: Thermal transfer articles of the invention comprising a carrier, optionally a release layer, a color layer releasably adhered thereto, and optionally an adherence layer on the bottom side of the color layer. Also graphic imaging compositions and methods for thermal transfer using such articles and compositions and graphic articles made by such methods. The transfer articles 1) exhibit thermoplastic, low cohesive properties during transfer such that good image resolution and transfer is achieved and 2) are radiation crosslinked after transfer such that a durable image is formed.

Abstract: A description is provided of an optical information recording and reproducing apparatus which detachably supports a volume holographic memory formed of a photorefractive crystal. The apparatus includes a portion for supplying a coherent reference light beam at a first wavelength into the volume holographic memory; a portion for supplying a coherent signal light beam at the first wavelength, modulated in accordance with image data, into the memory to produce an optical interference pattern with the reference light within the memory; a portion for supplying a gate light beam at a second wavelength into the memory for activating or deactivating an index grating in accordance with the presence or absence of the optical interference pattern to enhances a photo-sensitivity of the memory; and a detector for detecting diffraction light from the index grating of the memory by the irradiation of the reference light beam.

Abstract: A method and a compact apparatus to read shift-multiplexed holograms on a storage medium without the need for any lenses, and without the need for moving the storage medium. The shift-multiplexed holograms have centers at different locations. The apparatus can generate an array of diverging spherical waves of reference beams, each for illuminating one of the holograms. Each hologram is read as an image on a detector array by illuminating that hologram with a corresponding diverging spherical wave of reference beam. Different holograms can be read by illuminating the medium with a different diverging spherical reference beam. The diverging beams can be from an array of sources, or can be from switching one source.

Abstract: A method and a compact apparatus to read shift-multiplexed holograms on a storage medium without the need for any lenses, and without the need for moving the storage medium. The shift-multiplexed holograms have centers at different locations. The apparatus can generate an array of diverging spherical waves of reference beams, each for illuminating one of the holograms. Each hologram is read as an image on a detector array by illuminating that hologram with a corresponding diverging spherical wave of reference beam. Different holograms can be read by illuminating the medium with a different diverging spherical reference beam. The diverging beams can be from an array of sources, or can be from switching one source.

Abstract: A system for rapidly producing an integrated circuit on a substrate using a curable liquid capable of solidification to form a photo-resist pattern corresponding to an artwork representation of interconnections when subjected to ultra-violet light energy operates with a processor and computer aided design software. The system includes an x-y table, an electronically erasable mask, a drawing device and a projecting system. The substrate is disposed on the x-y table. The curable liquid lies in a solidification plane on the substrate. The electronically erasable mask is an ultra-violet wavelength isolating image buffer and is electrically coupled to the processor. The drawing device may be a back lighted liquid crystal display or a high resolution cathode ray tube or an infrared diode laser raster scanner and electronically draws an image of the artwork representation for the interconnections onto the electronically erasable mask.

Abstract: A method and apparatus for recording and reading information in a recording medium comprising a thin film of an organic compound having polymorphisms. The free energy of each polymorphism is different with each other. Information is recorded in the recording medium by applying energy to the recording medium and transferring locally the polymorphism of the organic compound to another polymorphism of the organic compound. The amount of the energy corresponds to the difference in free energy between the polymorphisms. Information is read from the recording medium by optically discriminating between the optical absorption properties of the polymorphisms.

Abstract: The bit storage density of an Electrically Alterable Non-Volatile Memory (EANVM) cell is improved by increasing the number of bits that are stored on an individual memory cell, without increasing the size and complexity of the memory cell, by allowing a non-volatile memory cell to assume 2 n discrete memory states. A multi-bit memory cell uses a floating gate FET which is electrically programmed to 2 n different thresholds. The 2 n different conductivity states of the FET are provided as information storage states for the cell.

Abstract: A system for generating three-dimensional objects by creating a cross-sectional pattern of the object to be formed at a selected surface of a fluid medium capable of altering its physical state in response to appropriate synergistic stimulation by impinging radiation, particle bombardment or chemical reaction, successive adjacent laminae, representing corresponding successive adjacent cross-sections of the object, being automatically formed and integrated together to provide a step-wise laminar buildup of the desired object, whereby a three-dimensional object is formed and drawn from a substantially planar surface of the fluid medium during the forming process.

Abstract: Method and apparatus for storing digital information in a dense memory structure. A semiconductor substrate has a thin insulating layer formed thereon. Over the thin insulating layer is formed a dielectric charge-storage layer. A piezoelectric bimorph cantilever arm has a tip formed at its free end to access certain memory sites defined by charge-storage regions in the charge-storage layer. To write infromation in the form of charges into a memory site the tip contacts or is in close proximity to the surface of the charge-storage layer and an electric field is applied between the tip and the substrate to induce charges to tunnel through the thin insulating layer into the charge-storage layer where the charges are stored as trapped charges. Information is read from a storage-site by spacing the tip of the cantilever arm a distance from the surface of the charge storage layer and applying an electric field between the tip and the substrate.

Abstract: Disclosed are medium and methods for storage and reading of stored information. The storage medium comprises an oxide layer having a plurality of pits and projections on the oxide layer surface. Information storage is achieved by applying voltage or light, in accordance to information signals, to the oxide layer, to differentially heat said oxide layer and create a plurality of portions which contain different quantities of oxygen. Stored information is read by the application of voltage or light to the oxide layer containing a plurality of portions containing different quantity of oxygen and detection of the electrical resistance or light reflectivity of each of said plurality of portions.

Abstract: Recordable/erasable optical storage media are disclosed. The medium of the present invention generally comprises a rigid substrate, an expansion layer, a retention layer, and a dual-metal reflective layer. A single, active layer may be substituted for the expansion and retention layers. A protective layer may or may not be present. The dual-metal reflective layer comprises a first metal sublayer and a second metal sublayer with a graded first metal/second metal alloy at the interface of the first metal sublayer and the second metal sublayer. Methods for applying the dual-metal reflective layer to a polymer-coated substrate and substrates produced by such methods are also provided.

Abstract: Recordable/erasable optical storage media are disclosed. More particularly, it provides a method and apparatus for recording and erasing information on an optical storage medium. The medium of the present invention generally includes a rigid substrate and an active region or layer adjacent to the substrate. The active region is a single polymer layer that functions as both an expansion layer and a retention layer. Reflective and protective layers may or may not be present. Additionally, methods for writing and erasing on these media are described.

Abstract: An optical recording material (21a) or a photochemical hole burning reaction. That is to say, informations are recorded in the recording material formed of a recording member in which molecules (D.sub.1) to (D.sub.3) having a property of changing characteristics of an optical absorption spectrum before and after the absorption of light by absorbing a light within an inherent wavelength range of the optical absorption spectrum are linked with at least one macromolecular chain (P). The optical recording material can be used in memories in the computer system and the like.

Abstract: A system for rapidly producing a plastic part from a curable liquid which solidifies when subjected to ultra-violet light energy operates with a processor and computer aided design software. The system includes a receptacle and a moving mechanism which is electrically coupled to the processor. The receptacle stores the curable liquid part of which lies in a solidification plane. The system also includes an electronically erasable mask, a drawing device and a projecting system all of which are electrically coupled to the processor. The electronically erasable mask is an ultra-violet wavelength isolating image buffer. The drawing device may be a back lighted liquid crystal display or a high resolution cathode ray tube or an infrared diode laser raster scanner and electronically draws a plurality of images of successive cross-sectional laminae onto the electronically erasable mask.

Abstract: What is described is a method of applying optically readable code marks (14) to the surface of bottles (10) of plastics material or glass by producing depressions in the surface by means of a laser (12) in such a manner that the bottom of each code mark (14) is constructed in the form of a diffusely scattering reflector. A sensor (16) constructed from optical fibres with emitting optical fibres disposed centrally and receiving optical fibres arranged radially is used for the automatic reading of the code marks. The sensor forms an angle of less than 90.degree. with the surface of the bottle so that light is only reflected into the sensor at places on the surface where there are code marks (14). The code marks (14) are easy to apply and can be read reliably.

Abstract: An optical disk of the invention comprises a substrate of an aromatic polycarbonate obtained by polymerizing one or two monomers polymerized through carbonate linkages and a recording layer coated thereon, said recording layer being recordable and readable by a laser beam,the monomer being selected from the group consisting of:(a-1) 1,1'-bis-(4-hydroxyphenyl)-p-diisopropylbenzene(a-2) 1,1'-bis-(4-hydroxyphenyl)-m-diisopropylbenzene,(b-1) 2,2-bis-(4-hydroxyphenyl)propane,(b-2) 2,2-bis-(4-hydroxyphenyl)butane,(b-3) 2,2-bis-(4-hydroxyphenyl)-4-methylpentane,(b-4) 2,2-bis-(4-hydroxyphenyl)octane,(b-5) 1,1-bis-(4-hydroxyphenyl)cyclohexane,(b-6) 4,4'-dihydroxy-2,2,2-triphenylethane,(b-7) 2,2-bis-(4-hydroxy-3-methylphenyl)propane,(b-8) 2,2-bis-(4-hydroxy-3-isopropylphenyl)propane,(b-9) 2,2-bis-(4-hydroxy-3-sec.

Abstract: In a reversible memory system, a pulsed laser beam generated from a laser unit is directed to a recording layer formed on a substrate 1. The recording layer essentially consists of a recording medium, for example, an iron-nickel alloy containing iron as a major component and 27 to 30 atomic % of nickel, which undergoes martensite transformation from a low-temperature phase to a high-temperature phase at a predetermined temperature Af and which undergoes a stress-induced transformation at a characteristic temperature Md. When a region of the recording layer is irradiated with the laser beam having a predetermined intensity, the region undergoes a stress-induced transformation so that the region is changed from the high temperature phase to the low temperature phase.

Abstract: An aromatic polycarbonate copolymer is useful for a substrate of an optical disk and is composed of 1 to 99 mole percent of the unit of 2,2-bis(4-hydroxy-3-tertiary-butyl-phenyl)propane, 99 to 1 mole percent of the unit of a comonomer selected from the group consisting of(1) 2,2-bis(4-hydroxyphenyl)propane,(2) 4,4'-dihydroxy-2,2,2-triphenylethane,(3) 2,2-bis(4-hydroxy-3-methylphenyl)-propane,(4) 1,1'-bis(4-hydroxyphenyl)-p-diisopropylbenzene,(5) 1,1'-bis(4-hydroxyphenyl)-m-diisopropyl-benzene,(6) 2,2-bis(4-hydroxyphenyl)butane,(7) 2,2-bis(4-hydroxyphenyl)-4-methylpentane,(8) 2,2-bis(4-hydroxyphenyl)octane,(9) 1,1-bis(4-hydroxyphenyl)cyclohexane and(10) 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propaneand a carbonate group located between the two units.

Abstract: A digital recording medium formed of a thermoplastic substrate having an array of parallel rows of equally-spaced microscopic optically-alterable mirrors each supported by a mesa projecting from one surface. A layer of transparent plastic over the mirrors provides dust protection. The medium can be formed also from a single transparent thermoplastic substrate with an array of indentations in a first surface. The bottom of each indentation is coated with a reflective material. When viewed from the opposite surface of the substrate, the indentations become mesas. The micromirrors are formed of a composite of gold and silicon dioxide. Recording is by exposure to a laser beam that reduces the reflectivity of selected mirrors. After exposure to the recording laser beam, the mirrors retain enough reflectivity to be distinguishable from the intervening valleys. The mirrors serve as timing and tracking markers prior to and during recording, and during read-out.

Abstract: A digital recording medium formed of a thermoplastic substrate having a regular array of microscopic optically-alterable mirrors each by a mesa projecting from one surface. The parallel rows of the mirrors are the same distance apart as the mirrors in each row. A layer of transparent plastic over the mirrors provides dust protection. The medium can be formed from a single transparent thermoplastic substrate with an array of indentations in a first surface. The bottom of each indentation is coated with a reflective material. When viewed from the opposite surface of the substrate, the indentations become mesas.Recording is by exposure to a laser beam that reduces the reflectivity of selected mirrors. After exposure to the recording laser beam, the mirrors retain enough reflectivity to be distinguishable from the intervening valleys. The mirrors serve as timing and tracking markers prior to and during recording, and during read-out.

Abstract: In an optical memory of phase transition type such that information is recorded or erased by reversibly changing the phase of a thin recording film between equilibrium phase and non-equilibrium phase in response to a laser beam, the memory is formed with a recording film comprising as the main component an intermetallic compound with a melting point between 300.degree. to 800.degree. C. in accordance with a binary target co-sputtering technique. Since the phase transition temperature of the recording film is higher than room temperatures, the recorded film can stably be kept in non-equilibrium phase state for a long time. Further, since the melting point thereof is lower than 800.degree. C., it is possible to record or erase information in or from the medium in response to a relatively small power laser beam.

Abstract: An erasable optical data storage medium has a polymer dual recording layer including an expansion layer bonded to a retention layer, each of the layers dyed to selectively absorb light in respective narrow wavelength bands. The retention layer has a glass transition temperature substantially above the glass transition temperature of the expansion layer, and is capable of undergoing substantial viscoelastic shear deformation while below its glass transition temperature. A first laser beam heats the expansion layer causing it to expand and cause viscoelastic deformation in the retention layer while the retention layer is below its glass transition temperature. A second laser beam is used to heat the retention layer above its glass transition temperature and relax the deformation, erasing the medium.

Abstract: A thin film transducer having a substrate, a first and second pole piece formed of a selected magnetic material and terminating in a gap, a coil positioned between the first and second pole pieces and a magnetically conductive layer formed of a material having selected chemical, magnetic and physical properties and having a known magnetic saturation flux density and being positioned contiguous at least one of the first pole piece and second pole piece and rearward of the edges forming the gap to conduct magnetic flux in parallel to the pole pieces and to increase and concentrate the magnetic flux density at the edges of the first and second pole piece defining the gap is shown.

Abstract: An optical memory system for storage and retrieval of digital data using a source of writing light in the visible light range and a separate source of near infrared, polarized reading light. The writing light is amplitude modulated by a signal containing the digital data to be stored. Horizontal and vertical deflectors deflect the beams to scan horizontally and vertically in response to control signals. The scanning beams are focused to a focal point to impinge upon a stationary medium manufactured of a dry film having submicron electrically photosensitive particles embedded in a thermoplastic layer mounted on a substantially transparent electrically conductive substrate. The particles are insensitive to light at the reading light wavelength. The particles are initially uncharged and the film is sensitive to light after receiving an initial surface charge.

Abstract: An associative (content addressable) optical memory system is comprised by a matched optical holographic filter (10, 18, 21, L1, L2) coupled to a digital computing system (14, 15, 16) having a memory (15, 16). In order to search the computing system memory for occurrences of an item, a hologram of a binary representation of the item is formed in the Fourier transform plane (18) employing laser (11) as the light source. A page of the memory to be searched is subsequently displayed at the input plane (10), which for example is comprised by a liquid crystal over silicon display, and illuminated by the laser (11). The light is filtered at the Fourier transform plane (18). Any occurrences in the input plane display of the item result in a respective correlation spot at the output plane, which spot output is decoded and supplied to the processor (14), thus providing correlation information to the computing system as to the location in its memory of the occurrences of the item.

Abstract: A disk-shaped optical type recording medium is disclosed which includes a transparent substrate and recording layer formed on the substrate. The recording layer in a single layer, which is made of a material capable of absorbing energy reaching it through the substrate and being locally raised on one surface according to the absorbed heat energy of the laser beam.

Abstract: Charged beam accessible data storage methods and devices involve a storage medium having an array of protrusions formed on a thermally insulative, substantially charged beam transparent base. The protrusions, made of high contrast material, can be selectively melted by a charged beam, such as an electron beam, in order to decrease the protrusions' aspect ratio and to increase their energy absorptive action when scanned by a charged beam. Since the melted protrusions do not wet on the base, the protrusions quickly assume a spherical bead shape when melted due to favorable surface tension forces. The bi-level charged beam absorption characteristics of the melted and unmelted protrusions provide the two "on" or "off" stored data states.

Abstract: A fuse circuit as used in self-repairing memory devices or the like employs a CMOS inverter and a feedback transistor to provide zero static or standby current. The fuse is in series with the feedback transistor across the supply, and the CMOS inverter has as its input the node between the fuse and feedback transistor. The inverter output controls the gate of the feedback transistor, which is N-channel or P-channel, depending upon whether the circuit is connected for high or low voltage output.

Abstract: A method for erasing a light recording medium comprising a thermoplastic resin having a number average molecular weight of 30,000 or less wherein a recording pit is refilled by using a light beam diameter greater than the pit diameter.

Abstract: The invention relates to thermo-optic writing on an information support comprising a substrate on which there is deposited an organic sub-layer covered by a metal layer.The invention provides a writing process which consists in creating in the metal layer a plastic deformation due to the thrust exerted by the localized swelling of the sub-layer. The writing produces a relief impression without piercing of said metal layer.

Abstract: The invention relates to thermo-optical inscription or writing on a data support comprising an organic intermediate layer (2) covered by a metal layer (3).The invention relates to a writing process consisting of creating in the metal layer 3 a plastic deformation as a result of the gaseous pressure exerted due to the local thermal degradation of intermediate layer 2. Inscription produces a bulge-like impression without perforating the metal layer (3).The invention more particularly applies to the thermo-optical inscription and storage of data on an optically readable support by phase or amplitude contrast.

Abstract: The use of a photoconducting material having specific characteristics in conjunction with a heat sensitive optical recording medium also having specific characteristics yields desirable properties. Specifically, through the use of this combination an optical recording medium that has a relatively low applied power threshold for writing and yet a relatively long-term stability is obtained. The photoconductor material should have an unilluminated resistivity of at least 10.sup.6 Ohm-cm and should undergo a resistivity descrease of at least 10.sup.5 upon illumination to yield this desired attribute.

Abstract: Information is stored, using a relatively low-power light beam, by redistributing the material in a deformable film. In a disc configuration, positioning of the light beam is achieved by referencing to a previously recorded track. In a document storage and retrieval system the document is scanned with the resultant scanned signal modulating the writing light beam producing a recorded track. This track is optically read with the resultant signal applied to a printer. For optimum utilization of the area, the recording and readout take place at constant velocity.

Abstract: Thermo-optic writing on an information support in which an organic sublayer covered by a metal layer is deposited on a substrate. A plastic deformation due to the thrust exerted by the localized swelling of the sub-layer is created in the metal layer to produce a relief impression without piercing of the metal layer.

Abstract: A thermo-optic data writing process and record in which focussed radiation is directed onto a data medium made up of a substrate, an organic layer directly deposited thereon with the interface therebetween being non-reflective and, on the organic layer, a metal layer of an alloy of metals selected to provide desired adhesion, range of deformation and shock resistance to rupture, for example, incorporating gold, silver or copper. Gas evolution by local degradation of the organic layer produces a bubble in the metal.

Abstract: The invention relates to a reversible memory structure with thermo-optical inscription or writing and optical reading on a moving support.According to the invention, the memory structure deposited on a substrate (1) is constituted by a double layer (2 and 3). A second alloy layer (3) at ambient temperature in the martensitic phase is deposited on a first thermally deformable layer (2). A heat pulse creates a deformation in the first layer, which deforms the martensitic alloy layer. A more powerful heat pulse raises the alloy layer to a temperature above its transformation point from the martensitic phase to another crystallographic phase and erases the inscribed deformation.Particular application to optical disks.

Abstract: The invention relates to a permanent memory structure supported by a moving substrate.This substrate is formed by two metal layers (9, 10) vacuum-deposited on the relatively inexpansible substrate (1). One of the two metal layers is very expansible (9), while the other layer (10) is relatively inexpansible, but ductile. During inscription by the laser beam, the beam energy absorbed by the layers (9, 10) produces an elongation of the expansible layer (9), which deforms the ductile layer (10) by stretching it beyond the elastic limit. There is a permanent deformation of the two-layer assembly, without perforation.Particular application to optical disks.

Abstract: The fingerprint transducer contains a sensing member having a sensing surface for receiving a fingerprint, a device for generating an electrostatic charge on the sensing surface and a heating device for heating the sensing surface up to a temperature which is approximately the softening temperature of the sensing member. The method for enhancing fingerprints comprises the steps of generating the fingerprint on the sensing surface, electrostatically charging the sensing surface, heating the sensing surface up to the softening temperature, and thereafter cooling down the sensing member.

Abstract: A curl resistant transmissively readable photoplastic film is produced having a base ply of polyethylene terephthalate to one side of which is laminated, in sequence, a light transmissive layer of electrically conductive particles, a primer layer of a dimethyl-phenylene oxide polymer, and a photoplastic layer. The latter layer may be formed from a mixture of 75% by weight of an intermediate molecular weight (800-5,000) polystyrene and 25% by weight of a polymolecular plasticizer derived from alpha-methylstyrene to which mixture has been added about 3.3% of the total weight of solids of very fine particle size copper phthalocyanine. To the other side of the base ply is laminated a layer of a solvent deposited methyl methacrylate polymer. When the photoplastic layer is about 17 to 18 microns thick the methyl methacrylate layer may be about 4 to 6 microns thick.

Abstract: A multiple display system for the display of electronically processed data includes a deformographic storage tube in which a deformographically created image pattern is generated. High intensity projection light is directed at the deformographic storage tube and a plurality of separate images of the pattern are displayed by a controlled scanning arrangement. One of the images may be projected upon a thermomagnetic recording medium so as to induce in the thermomagnetic sensitive medium a retained pattern corresponding to the deformographically created image pattern. From the thermomagnetic recording medium, the retained pattern may be transferred to a further recording medium such as through a magnetoxerography process.

Abstract: An apparatus for and a method of optically recording or writing data into a thermoplastic layer is disclosed. The recording medium is fabricated as an integral part of the face of a cathode ray tube (CRT) and includes a layer of thermoplastic material that is thermoplastically responsive to a heating light beam having a wavelength within the infrared (IR) range and that is a dielectric capable of storing charges corresponding to a data-containing charging (electron) beam. The thermoplastic layer is first selectively exposed to the charging (electron) beam for spatially selectively electrically charging the exposed surface of the thermoplastic layer and is then softened by the heating (IR) beam causing the charged, softened surface to distort under the forces of the data-bearing charge.