Abstract: A method for producing an organic crystal is disclosed. One embodiment comprises maintaining a capillary tube containing a fused liquid of an organic crystal material and having a fused liquid reservoir at one end thereof at a temperature not less than the fusion point of the organic crystal material together with the fused liquid reservoir, reducing the temperature of the fused liquid in the fused liquid reservoir to precipitate seed crystals, and then slowly cooling the capillary tube successively from the end toward the other end to allow a single crystal to grow from the seed crystal in the capillary tube. Because of the large quantity of the fused liquid, a seed crystal can be formed and allowed to grow even from a fused liquid of an organic crystal material which hardly crystallizes in the form of a fused liquid.

Abstract: A fiber-type wavelength converting device comprises a nonlinear optical crystal core; and a glass cladding surrounding the core that produces a second harmonic utilizing Cherenkov radiation. An exit end face of the cladding is flat, and an exit end face of the core has asperities. The exit end face of the core is formed inside with respect to the exit end face of the cladding, and particles may be filled in a recess portion composed of a bottom surface of the exit end face of the core and side surface of an inner wall of the cladding. The cladding has an outer diameter of at least 1 mm to prevent breakage of device upon polishing and grinding. A thin film may be formed on an input end face of the device.

Abstract: An image forming apparatus for forming an image by use of photosensitive microcapsules each consisting of an outer shell and a liquid component encapsulated in the outer shell. The liquid component contains an image forming material and a photocuring substance that is polymerized by light. The microcapsules are electrically charged to be supported on a support member. Then, the microcapsules are exposed to light having image information to selectively harden the microcapsules. The microcapsules not cured are ruptured to discharge the image forming material, thereby forming an image by the image forming material on an image receiving paper. Then, a residue inclusive of the remaining microcapsules and a part of the liquid component left on the support member are exposed again to light to be cured and solidified. The solidified residue on the support member is wholly removed by a cleaning member.

Abstract: A single crystal non-linear optical transmission line is manufactured by using a cladding made of a glass material that eliminates or reduces the formation of an uneven inner wall of an optical fiber cladding made of a glass mother material. The improved glass material suppresses the elution of metal mono-oxides on the inner wall and results in a high yield of non-defective fiber manufacturing. A glass mother material, such as SF1, having a low concentration of lead oxide does not contribute to the elution problem common to higher concentration glass mother materials. A glass mother material having no metal oxides also overcomes the problem of elusion since substitute molecules, such as TaC6, do not elute in water or in acid solutions. These glass materials can be used to successfully form a non-defective core having a low refractive index layer of the inner wall and make possible single mode propagation of a laser light in a single crystal non-linear optical transmission line.

Abstract: The invention relates to a selective particle applying device provided with a developer applying device. The selective particle applying device applies a developer to the entire surface of a capsule sheet coated with microcapsules, disposes the capsule sheet with its surface coated with the developer facing a developer removing electrode provided with a photoconductive member to which a predetermined voltage is applied, splits a light beam by a light beam splitter, irradiates the developer removing electrode with one of the split light beams, and irradiates the capsule sheet with the other split light beam. Portions of the photoconductive member irradiated intensely with the split light beam become conductive to enhance the intensity of electric fields created between conductive portions of the developer removing electrode and the capsule sheet.

Abstract: A method for the production of a thin film on an end surface of a fiber made up of a core of an organic material, and a clad made of glass. This method involves the steps of placing the fiber in a vacuum chamber, reducing the pressure in the chamber, cutting the fiber under reduced pressure, and either simultaneously, or immediately after cutting the fiber, forming a thin film on the cut surface of the fiber.

Abstract: An image forming apparatus for forming an image on a pressure-deformable or pressure-damageable image receiving member, such as corrugated cardboard, using a photosensitive, pressure-sensitive recording medium referred to as a microcapsule sheet which has a surface coated with an immense number of microcapsules encapsulating a chromogenic material therein. The microcapsule sheet is exposed to imaging light to form a latent image thereon. A developing agent is deposited on the latent image formed portion of the recording medium and a pressure is applied thereto to develop a visible image. The visible image is formed on the microcapsule or another member. In a thermal transfer section, the imaged microcapsule sheet and the image receiving member which are superposed one on the other are heated to transfer the image onto the surface of the image receiving member.

Abstract: A method of coating the ends of a fiber wavelength-conversion element with a macromolecular film. This serves to protect the crystal core and change in quality without changing the state of the core end surface.

Abstract: An imaging material providing device of the present invention comprises: means for carrying imaging material particles charged to a first polarity, the imaging material carrying means having a portion formed of elastic material for holding the imaging material particles; means for receiving imaging material particles, the imaging material carrying means being disposed apart from the imaging material carrying means with a gap therebetween and being charged to a second polarity opposite to the first polarity so that the imaging material particles may be electrostatically attached onto the imaging material receiving means; means for elastically deforming the elastic portion of the carrying means, the imaging material particles being introduced into the gap when the deformed elastic portion is restored; and means for generating an electric field in the gap and electrostatically attracting the charged imaging material particles in a direction toward the imaging material receiving means.

Abstract: A fiber type wavelength converter comprising a cladding made of a thin glass tube an inner wall of which is coated with a coupling agent, and a core which is contained in the cladding and made of a single crystal of methyl 4-hydroxybenzoate, which can convert a fundamental wave to a second harmonic effectively.

Abstract: A fiber wavelength modulator device which emits a secondary harmonic component by Cerenkov radiation, including a core being a single crystal of a non-linear optical material and a cladding being composed of glass, wherein the relative difference between the core and the cladding has a refraction index with respect to an incident beam, of at lesat 0.015.

Abstract: A fuel assembly for a nuclear reactor comprises a fuel bundle in which a number of fuel rods are regularly arranged and a channel box surrounding the outer periphery of the fuel bundle. The interior of the channel box is designed so that the inner cross sectional area of the channel box increases from the upstream side of the coolant flow towards the downstream side thereof, for example, by stepwisely shaving the inner surface of the channel box. The corner portions of the channel box may be chamfered to improve the stress due to the inner pressure.

Abstract: A machine tool having a tool spindle rotatable about a horizontal axis provided with first and second tool magazines and first and second tool transfer devices. The first tool magazine removably stores a plurality of small diameter tools, with the axes of the small diameter tools extending horizontally. The first tool transfer device transfers the small diameter tools between the first tool magazine and the tool spindle. The second tool magazine is installed on the floor at one side of a column of the machine tool in a horizontal direction perpendicular to the tool spindle and removably stores a plurality of large diameter tools, with the axes of the large diameter tools extending vertically. The second tool magazine is provided with a turnover mechanism, which pivotally moves a large diameter tool indexed to a large tool removal position so as to lay the large diameter tool horizontally in parallel relation with the tool spindle.

Abstract: A rest apparatus for supporting a cylindrical portion of a workpiece to be machined. A pilot shaft is supported at the opposite ends thereof by a support head and provided with a piston portion to form a hydraulic cylinder with a cylinder bore of a rest housing so as to move the rest housing toward and away from the workpiece. The axis of the pilot shaft passes through or slightly above the axis of the workpiece. Rotation of the rest housing about the pilot shaft is prevented. A pair of rest shafts are slidably but nonrotatably received in the rest housing for horizontally and vertically supporting the workpiece by a pair of rest shoes. Feed apparatus is operatively connected to the pair of rest shafts to feed the pair of rest shoes toward the center of the workpiece.

Abstract: A machine tool having a frame, a turret head rotatably mounted upon the frame, at least one tool spindle rotatably supported within the turret head, first coupling means mounted upon the tool spindle, and second coupling means slidably and rotatably mounted within the frame and adapted to engage with the first coupling means of the tool spindle positioned at an operative position so as to transmit a driving power to the tool spindle. Within the turret head there is mounted angular maintenance means for maintaining the tool spindle in a first predetermined angular position. Within the frame there are mounted release means for releasing the tool spindle positioned at the operative position from the angular maintenance means, orienting means for positioning the second coupling means to a second predetermined angular position, and means for moving the second coupling means positioned at the second predetermined angular position into and out of engagement with the first coupling means.