Abstract: A photocurable composition containing at least a radical polymerizable unsaturated group-bearing compound, a metal allene compound, a squalilium dye, and N,N-dimethylaniline. The photocurable composition is polymerized and cured by generation of radicals upon receipt of low energy of visible light having long wavelengths or near infrared light.

Abstract: A hot-melt ink that exhibits good penetration into recording paper, comprises at least one binder and at least one coloring matter dispersed or dissolved therein, and the hot-melt ink, during cooling, exhibits a peak at a temperature of 61.degree. C. or below on a heating/cooling hysteresis curve plotted for the range 40.degree. C. to 150.degree. C. using a differential scanning calorimeter.

Abstract: A hot-melt ink includes an amide resin component and a wax component. The wax component includes at least montan ester wax and a ketone wax, and these waxes are contained in a total amount of at least 50 wt % based on the total amount of the hot-melt ink.

Abstract: An electrostatic latent image developing method using an electrostatic latent image developing apparatus to develop an electrostatic latent image, including providing the electrostatic latent image apparatus with an initial developing agent containing at least one carrier and toner containing at least one missing-middle-prevention agent, forming an electrostatic latent image on the photosensitive body, developing the electrostatic latent image on the photosensitive body by contacting the electrostatic latent image with the developing agent to produce a developed toner image, transferring the developed toner image formed on the photosensitive body to a recording medium, fixing the developed toner image to the recording medium, and supplying replacement toner to compensate for the toner consumed from the initial developing agent in developing the electrostatic latent image, wherein the replacement toner does not contain missing-middle-prevention agent.

Abstract: A photosensitive microcapsule toner encapsulating a photocurable composition is excellent in weather resistance, and is curable by application of low energy visible light, particularly light having a wavelength not less than 600 nm. The photocurable composition is composed of a radical polymerizable unsaturated group-bearing compound, a metal arene compound as a polymerization initiator, a spectral sensitizing dye, and a color material.

Abstract: A photosensitive microencapsulated toner includes a radical polymerizable unsaturated group-containing compound, a metal arene compound, a spectral sensitizing dye, and a photosensitizer. The toner is photocurable by application of low energy visible light, particularly at a wavelength of not shorter than 600 nm.

Abstract: The invention relates to an optical microlens array producing method.

Abstract: A photocurable composition comprises a radical polymerizable unsaturated group-bearing compound, a metal allene compound, and a squalilium compound. The composition is cured by application of low energy visible light or near infrared light having a long wavelength. In the composition, the metal allene compound and the squalilium dye serve as photopolymerization initiators, which are able to produce radicals by application of the long wavelength light and to polymerize the radical polymerizable unsaturated group-bearing compound.

Abstract: An image forming apparatus is capable of forming a good image without a color shade and a dropped color by coating uniformly photosensitive toner particles on a supporting member. The image forming apparatus includes a coating amount detecting unit for detecting an amount of the photosensitive toner particles coated on the supporting member, in the vicinity of a coating unit. Therefore, the image forming apparatus can determined whether a required amount of the photosensitive toner particles is coated on the supporting member, or not. When a required amount of the photosensitive toner particles is coated on the supporting member, an exposure operation is executed. When there is a part on the supporting member which is not coated with enough photosensitive toner particles, the coating unit is operated again. This processing is repeated until the whole of the supporting member is coated with the enough photosensitive toner particles. After this, the exposure operation is executed.

Abstract: The invention relates to an optical waveguide array producing method.

Abstract: The present invention relates to an image recording method utilizing photosensitive microcapsules. These photosensitive microcapsules have characteristics of being rendered hardenable upon exposure. Further, only the hardenable photosensitive microcapsules can be hardened. In this image recording method, an optional image pattern is initially exposed to a photosensitive recording medium having thereon the photosensitive microcapsules for rendering only the exposed photosensitive microcapsules hardenable corresponding to the image pattern. Subsequently, the exposed photosensitive recording medium is heated to harden only the hardenable photosensitive microcapsules. Further, the photosensitive recording medium is entirely exposed again with light to render the unhardened photosensitive microcapsules hardenable.

Abstract: In the optical waveguide array according to the present invention, a clad portion and cores formed by curing photocurable resins are sandwiched between two reinforcing members, at least one of which has a light transmitting characteristic. The clad portion covers the cores.

Abstract: An apparatus and a method for forming a three-dimensional article with photosetting or thermosetting material on the basis of a three-dimensional information on the article by means of an ink jet method. The material is jetted from at least one ink jet head to a stage and laminated thereon. The laminated material is exposed to light by a light source to be cured. In this process, a jetting direction of the material from the ink jet head to the stage and/or a jetting amount of the material jetted from the ink jet head is changed in accordance with the information by a control unit, thereby forming a solid article having a desired three-dimensional shape.