Abstract: A toner composition that permits printing of clear-cut and high image quality without developing a fog or a blur is provided.

Abstract: A toner composition having a high light transmission when printed on a transparent medium, in addition to being superior in strength and durability is provided. Binder resin particles manufactured through a dispersing polymerization method are colored using at least one kind of dye and are then subjected to a process of injecting an organic finely divided powder and a charge controlling agent and to a process of externally adding a hydrophobic silica and a conductive titanium oxide, thereby making a toner composition having a gel percentage of 2 to 15%.

Abstract: An antenna coil (21) for generating a magnetic field (25) to supply power to a transponder (26) is energized through switching devices (23 and 24) connected between Vcc and GND of a D.C. power supply (20) and having contacts S1 and S2 that are actuated in opposite phases in accordance with a carrier signal. Both of the switching devices (23 and 24) are turned OFF while the carrier signal is absent. Accordingly, the oscillating current flowing through a series resonance circuit of the antenna coil (21) and a capacitor (22) quickly attenuates, thereby dropping the intensity of the magnetic field (25).

Abstract: A developer for developing an electrostatic latent image formed on an photosensitive body, including a toner, a fluidity improving material, a cleaning material, and hydrophobic fine particles obtained by treating surfaces of the fine particles with silicone, the treated fine particles containing not less than 5% of the silicone.

Abstract: An electrostatic latent image developer containing a carrier, a toner, and an electric field adjusting agent. The electric field adjusting agent is formed as particles having an average particle size smaller than that of the carrier, and contains a magnetic powder in a specific amount less than that of a magnetic powder contained in the carrier and greater than that of a magnetic powder contained in the toner. The magnetic powder may be deposited on the surface of each particle of the electric field adjusting agent to form a conductive layer capable of smoothly taking or imparting charges away from or to the toner. Accordingly, an electric field formed in a gap between a developing sleeve and a photosensitive member can be intensified to thereby prevent an edge effect and enhance a permittivity in this gap. Accordingly, the electrostatic latent image formed on the photosensitive member can be faithfully developed.

Abstract: Disclosed is a dry type developer including colored particles which are flown to a recording medium, thereby an image being recorded on the recording medium, wherein, a ratio of both an average particle size of the particles calculated based on volume of the particle and an average particle size of the particles calculated based on number of the particle, lies in a range of from 1.00 to 1.35. Thereby, the distribution of the particle size in the toner can be made sharp with mono-dispersion, thus uniform charge quantity can be obtained without being affected by changing in the charge quantity changed according to the toner particle size, because the toner particle size can be made uniform. Therefore, the image with stable and uniform concentration can be recorded on the recording medium all the time. As a result, the image with fine line can be clearly recorded on the recording medium with high resolution.

Abstract: A developer material toner comprising powdered developer material color-reactable with dye or dye precursor and powdered inorganic oxide covering the surface of the powdered developer material.

Abstract: A photosensitive recording medium for forming an image through reaction of a dye precursor with a developer material and method and apparatus for recording images employing such a photosensitive recording medium. The photosensitive pressure-sensitive recording medium comprises a base, an electrically conductive layer, a photoconductive layer being rendered electrically conductive in response to light, and microcapsules being variable in mechanical rupture strength by photopolymerization and containing a dye precursor. The image recording apparatus includes charging means for electrically charging such photosensitive pressure-sensitive recording medium and developer material applying means for applying a developer material to the exposed photosensitive pressure-sensitive recording medium.

Abstract: A thermal developing type photosensitive pressure sensitive recording medium records an image and transfers the image onto an image receiving medium. The image recording medium includes a substrate, microcapsules and binder. The microcapsules are formed on the substrate, and encapsulate therein dye and polymerizable compound. A latent image is formed in a combination of the microcapsules by changing mechanical strength thereof upon photopolymerization of the polymerizable compound for forming cured and non-cured microcapsules. The dye flows out of the non-cured microcapsules and is transferred onto an image receiving layer by rupturing the non-cured microcapsules upon pressure application. The binder fixes the microcapsules onto the substrate. The binder contains a pressure sensitive adhesive agent.

Abstract: An image forming apparatus makes use of a color developing principle in which there is an absorption or reaction between a color developer and a dye, pigment or dye precursor. A photosensitive member whose surface is rendered electrically conductive by application of light, and a photosensitive/pressure sensitive recording medium are exposed to image information containing light simultaneously so that the color developer is selectively deposited only onto portions of the photosensitive/pressure sensitive recording medium which is to develop color. Microcapsules containing the dyes, pigments or dye precursors located on the photosensitive/pressure sensitive recording medium are selectively broken according to the image information containing light, and the selectively deposited color developer transferred onto the photosensitive/pressure sensitive recording medium are transferred and fixed on any arbitrary medium to be recorded, thereby obtaining a desired image on the arbitrary medium.

Abstract: A method for forming a lens at an end portion of an optical apparatus, such as an optical fiber assembly, a fiber optical CRT or an LED array, which method comprises a dipping step wherein the end portion of the optical apparatus is dipped into an unsolidified photo-setting resin and a lighting step wherein the photo-setting resin is solidified according to an intensity distribution of the light outputted from the optical apparatus. Further, an optical information processing apparatus and an optical signal transmission apparatus have a lens array formed by the above method.

Abstract: An image recording medium is provided with an identifying index indicative of whether or not one side of the image recording medium is a front side coated with developing agent. In another image recording medium coated with developing agent, electrical resistance material is coated on at least one side of the image recording medium. In a detecting device for the another image recording medium, an electrode unit is provided for measuring electric conductivity of one side of the image recording medium. A control unit is connected to the electrode unit for identifying the image recording medium on the basis of the electric conductivity measured by the electrode unit. In another detecting device, a light emitting unit emits light with which at least one of front and back sides of an image recording medium is illuminated. A light receiving unit receives light reflected from the at least one side of the image recording medium.

Abstract: An image recording apparatus which can provide an output visible image on an ordinary sheet. The apparatus uses a photosensitive recording medium whose surface is provided with microcapsules encapsulating therein a chromogenic material or dye precursor. Developer material particles are supplied over one of the photosensitive recording medium and the ordinary sheet for generating a chromogenic reaction with the dye precursor.

Abstract: An optical phase plate is provided in the form of a drawn and oriented film or sheet, having a composition comprising a vinylidene fluoride resin and a methyl methacrylate resin in a mixing ratio of the former to the latter between about 65/35 and about 85/15 by weight, in which the crystal structure of the vinylidene fluoride resin consists mainly of a .beta.-form and the film or the sheet has dimensional stability and a retardation value R within a range from 500 to 650 nm. The optical phase plate is produced by uniformly kneading and melt-extruding the predetermined PVDF/PMMA mixture into a sheet and subjecting the sheet to drawing and then to heat treatment.

Abstract: A microlens having pliability is disclosed, which comprises a layer of a polymer composition having the thickness gradually changed, the layer of the polymer composition being formed by exposing to light a layer of a photo-reactive composition selected from (i) compositions containing a photopolymerizable monomer and a photopolymerizable initiator or (ii) compositions containing a photopolymerizable polymer. A process for producing the microlens is also disclosed.

Abstract: An image recording apparatus having a first exposure unit for forming a latent image corresponding to an original image on a photosensitive pressure sensitive recording medium, and a second exposure unit for electrostatically forming a developer particle image. The developer particle image is transferred onto the photosensitive pressure sensitive recording medium, and the thus transferred developer particles are reacted with chromogenic material of the photosensitive recording medium at a pressure developing unit so that a visible image is provided on another sheet medium. A method for recording the image includes the steps of effecting a first exposure for forming the latent image, effecting a second exposure for forming the developer particle image, electrostatically transferring the developer particle image onto the recording medium, and pressure developing the image to provide a visible image on a separate plane paper.

Abstract: A recording system including an exposing device for image-wise exposing a pressure-sensitive photosensitive medium according to source image information, so as to form thereon latent images, and a developing device for applying a pressure to the image-wise exposed photosensitive medium so as to cause a chemical reaction with a developer material, to thereby develop the latent images into visible images on a recording medium. The recording system further includes a coating device for applying the developer material to the recording medium.

Abstract: A toner for forming a developer medium which is capable of reacting with a chromogenic material to produce a visible dye image, comprising developer particles and thermoplastic particles. Each developer particle includes a developer material capable of reacting with the chromogenic material. The thermoplastic resin particles has a smaller grain size than the developer particles. Each developer particle carries a multiplicity of the thermoplastic particles deposited on its surface.

Abstract: In a heat-fixing method, a sheet is prepared whose one side is coated with a release-agent layer. The sheet is superimposed upon at least a recording side of a recording medium having carried thereon an unfixed image such that the coated release-agent layer is faced to the recording side. Alternatively, the sheet is folded double into two sections such that release-agent layer sections on the respective two sections of the folded sheet are faced each other, and then the recording medium is sandwiched between the two sections of the folded sheet. The recording medium as well as the sheet is heated. Subsequently, the sheet is peeled off the recording medium.

Abstract: A vinylidene fluoride resin composition which comprises 100 parts by weight of vinylidene fluoride resin and 0.1 to 10 parts by weight of glycidyl (meth)acrylate resin, said glycidyl (meth)acrylate resin being a polymer composed of at least one of glycidyl acrylate and glycidyl methacrylate, or a copolymer composed of a monomer selected from the group consisting of methyl acrylate, methyl methacrylate, ethyl acrylate and ethyl methacrylate and at least one of glycidyl acrylate and glycidyl methacrylate.The resin composition has improved thermal stability and electrical properties, and is immune to deleterious discoloration.