摘要:
A process for preparing a polyvalent metal salt of a salicylic acid resin which comprises the steps of reacting salicylic acid or its derivative with styrene or its derivative at a temperature of -20.degree. C. or higher but lower than 40.degree. C. in the presence of sulfuric acid, and then reacting the resulting reaction product with a polyvalent metal compound; an aqueous dispersion in which the polyvalent metal salt of the resin is dispersed in water; and a developing sheet in which the polyvalent metal salt of the salicylic acid resin is used.
摘要:
Provided are a color-developing agent comprising a multivalent metal salt of a salicylic acid derivative and a sulfonated phenol and/or a metal salt thereof and having excellent initial and ultimate color-developing capacities and improved waterproofness; and a color-developing sheet making use of the color-developing agent.
摘要:
The invention is a novel developer composition which comprises one or more phenol derivative of sulfonamide structure represented by the formula (1) and one or more constituents selected from a polyvalent metal compound, antioxidant and reducing agent and provides dispersion having excellent preservation stability on atomization in water. The heat sensitive recording material comprising the developer composition has high color density in developed image and is also excellent in whiteness degree before recording. wherein X1 is a hydrogen or halogen atom, an alkyl, alkoxy or hydroxyl group, Z1 is a hydrogen atom or alkyl group, and R1 is an unsubstituted or substituted alkyl or aryl group.
摘要:
Provided is a broadcast control apparatus that realizes broadcasting to a predetermined distribution area, as in an existing public mobile communication network in a communication system using a femto cell base station. The broadcast control apparatus includes a database, in which location information of the femto cell base station existing in a predetermined distribution area section is associated with the distribution area section. The broadcast control apparatus also includes update means for updating the association in the database based on the location information of the femto cell base station received by reception means.
摘要:
An apparatus concealing member in which a film-type information input device (4) is placed under a film-type transparent base member (3), a functional liquid crystal film (5) is placed under the information input device (4) at a position where the functional liquid crystal film (5) covers a portion to be concealed (1b) of an apparatus and can be electrically changed over between being transparent and being non-transparent, and a non-metal and film-type glossy layer (6) is placed under the functional liquid crystal film and exhibits transparency and a gloss due to reflection.
摘要:
A housing case (1) for a small electric device and communication device includes a flat plate (2) having a dimension substantially the same as that of the front portion of the housing case and comprising at least a glass plate, and a resin frame (3) integrated with the flat plate (2) to support the backside periphery of the flat plate (2).
摘要:
A two-color molding equipment for shaping a two-color molded product by placing a film in primary mold tool configured by a fixed mold and a movable mold, injecting a resin into a first cavity formed by closing the molds to shape a primary molded piece, shifting the primary molded piece provided with the film to secondary mold tool configured by the fixed mold and the movable mold, and injecting a resin into a second cavity formed by closing the molds to shape a secondary molded piece, the two-color molded product composed of an integrated combination of the primary molded piece, the secondary molded piece, and the film interposed therebetween, wherein the first cavity is configured to shape the primary molded piece to be smaller than the film so that a part of the film protrudes from the primary molded piece, and a wall surface located at the protruding portion of the film to constitute the first cavity is provided with a convex portion that restricts mold shrinkage of the film protruding portion in the primary molded piece.
摘要:
A zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power and a second lens unit having a positive refractive power. In the zoom lens, an interval between the first and second lens units becomes smaller at a telephoto end than at a wide-angle end during zooming. The first lens unit includes, in order from the object side to the image side, a first lens having a negative refractive power, a second lens having a negative refractive power, which is made of a plastic and has an aspheric lens surface, and a third lens unit having a positive refractive power. In the zoom lens, a refractive index and an Abbe number of the plastic (Nd, νd), a focal length of the second lens (fn), and a focal length of the first lens unit (f1) are appropriately set.
摘要:
A display device for displaying information is provided with an optical system for guiding the light of the display device to the eye, the optical system having, in the order in the proceeding direction of the light, an entrance face for receiving the light, a curved face for totally reflecting the light and a reflecting face concave to the eye side and adapted to reflect the light toward the eye. The reflected light is transmitted by the curved face and reaches the eye. Thus there is obtained a compact display device with satisfactorily suppressed aberrations.
摘要:
A following control unit 30 is provided. When a connecting-side connector 120 included in a connecting electronic device 100 is connected with a receiving-side connector 20 disposed within a main frame 10 and supported so as to be movable in a connection direction, the control unit 30 controls a movement of the receiving-side connector 20 in a connection direction by applying a pressing force when connecting to the connecting-side connector 120 in the connection direction. The connecting electronic device 100 is a connection-subject. The control unit 30 performs a control by the pressing force when connecting being applied to the connecting-side connector 120 in the connection direction, when the connecting-side connector 120 and the receiving-side connector 20 are being connected. The control is released by a pressing force when storing being applied in the connection direction to the connecting-side connector 120 to which the receiving-side connector 20 is connected, after the connecting-side connector 120 and the receiving-side connector 20 are connected.