Abstract: There is provided a biosensor chip where the collecting amount necessary for the measurement is made small whereby burden of a user is reduced and, at the same time, a sample at a puncture opening is able to be easily collected and measured without an operation of making the sample collection opening nearer the puncture opening. When an end of a main body chip is pushed onto a test body, an elastic body installed at an end of the main body chip is compressed and a device for puncture is produced whereby the test body is able to be punctured. When the pushing force is made weak, the device for puncture is pulled out from the test body due to resilience of the elastic body and a sample is flown out from the puncture opening.

Abstract: It is intended to provide a sensor chip which has a small size and is easily produced and capable of determining quantities of at least two components of multiple samples rapidly, conveniently, and correctly as well as to provide a production method capable of producing the sensor chip easily and with high productivity. A sensor chip includes a substrate, a cover layer, a spacer layer sandwiched between the substrate and the cover layer, multiple reaction portions disposed between the substrate and the cover layer, multiple detection units exposed in the hollow reaction portions, and a sample inlet communicated with the hollow reaction portions and a method for producing the sensor chip.

Abstract: A toner for the development of an electrostatic image is provided wherein at least one layer of a particulate resin is coated onto a substantial portion of the surface of an agglomerate of particles made from at least primary polymer particles and primary colorant particles, wherein at least one of the primary polymer particles and the particulate resin contains a wax, and the particulate resin of the outermost layer is substantially free of wax and a process for producing the toner.

Abstract: Provided are a biosensor chip measurement machine that can obtain accurate measurement results within a short period of time by employing only a tiny amount as a sample, and a measurement method therefor. A biosensor measurement machine 20 includes a power source 21, which is connected to a voltage regulator 22, a measurement instrument 23, and a controller 24 for supplying power. When a biosensor chip 1 is connected to the biosensor measurement machine 20 and a voltage is applied, the measurement instrument begins the measurement of a current value for a biosensor. When a measured current value or a measured charge value is greater than a reference value, the measurement is ended in accordance with an instruction issued by the controller 24, and when the value is smaller than the reference value, the measurement is continued in accordance with a controller instruction.

Abstract: It is intended to provide a sensor chip that enables detection of a deterioration state of a reagent applied on a reaction portion when measuring a concentration of a measurement object substance and a sensor system that enables a correct measurement by using the sensor chip for detecting the reagent deterioration state. A sensor chip including two substrates opposed to each other, a spacer layer sandwiched between the substrates, a multiple reaction portions provided in the spacer layer, and detection electrode units disposed on surfaces of the substrates facing to the spacer layer and exposed to the reaction portions, wherein an identical reagent A is applied on two or more of the reaction portions, and another reagent B that reacts with the reagent A is applied on at least one of the two reaction portions and a sensor system including the sensor chip and a measurement unit for comparing current values from the two or more reaction portions on which the identical reagent A is applied.

Abstract: A method for fabricating a sensor chip having a substrate, a cover layer, a spacer layer interposed between the substrate and the cover layer, and a hollow reaction section provided in the spacer layer, the method comprising the steps of: affixing two or more adhesive or bonding tapes onto a sheet where a plurality of substrates are to be formed or onto a plurality of substrates, to thus form a spacer layer; and forming a hollow reaction section from one or a plurality of gaps between the tapes, whereby volumetric variations or positional displacements of the hollow reaction section can be reduced. A sensor chip which can be fabricated by this method.

Abstract: There is provided a sensor chip including: a base plate; a cover layer; a hollow reaction portion provided between the base plate and the cover layer, in which a reaction is performed between a sample and a reagent applied thereinto; a sensing member constructed of an electrode which is exposed to the hollow reaction portion; and a sample inlet for conducting the sample to the hollow reaction portion, wherein entire portions of the base plate and the cover layer, which are located opposite to the sensing member provided with the hollow reaction portion, are made transparent.

Abstract: It is intended to provide a biosensor chip capable of rapid and correct measurement, including a reaction chamber that enables a measurement of a very small amount of a measurement sample and has a small capacity and potassium ferricyanide having a very small crystal particle size disposed in the reaction chamber. In a biosensor chip 1, electrodes 3 and 4 are disposed on the lower substrate 2, and lower spacer 5 (7 and 8) is adhered on the electrodes 3 and 4. An upper spacer 11 (12 and 13) is adhered to an upper substrate 15, and a lower spacer 5 is attached to the upper spacer 11 by and adhesive agent 10. A lower groove 9 is formed between long and short lower spacers 7 and 8, and an upper groove 14 is formed between long and short spacers 12 and 13, so that a reaction chamber 17 is formed by the upper and lower grooves 9 and 14. A capacity of the reaction chamber is 0.

Abstract: Provided are a sensor chip and a manufacturing method of this sensor chip, that includes a substrate, a cover layer, a spacer layer sandwiched between the substrate and the cover layer, and a hollow reaction section between the substrate and the cover layer, wherein warping due to changes in the environmental temperature and humidity does not occur. A sensor chip is provided including: a substrate; a cover layer; a spacer layer sandwiched between the substrate and the cover layer; a hollow reaction section provided between the substrate and the cover layer; and a detection section provided in the hollow reaction section, wherein the substrate and the cover layer are made of the same material and have the same thickness, and a material and a shape of the spacer layer are symmetrical with respect to a plane which is parallel to the substrate and located at equal distances from the substrate and from the cover layer, and a manufacturing method of the sensor chip is provided.

Abstract: A coupled member made of a plurality of sensor chips is featured by that adjacent sensor chips are coupled to each other under cuttable condition; the respective sensor chips can be cut and piece-separated from the coupled member in a higher efficiency; and even after the sensor chips are piece-separated, these sensor chips can be readily and quickly stored in containers thereof; and furthermore, the sensor chips can be easily checked and failure chips can be readily removed.

Abstract: The present invention relates to a plating solution of palladium alloy and has an object to provide a plating solution of palladium alloy highly stable and capable of stably forming a plated film of a given alloy composition. The present invention relates to a plating solution of palladium alloy containing a palladium complex and a metal salt, wherein the palladium complex is coordinated with at least one neutral amino acid selected from the group consisting of glycine, alanine, valine, leucine, serine, threonine, asparagine, glutamine and tyrosine as a ligand.

Abstract: A toner for the development of an electrostatic image is provided wherein at least one layer of a particulate resin is coated onto a substantial portion of the surface of an agglomerate of particles made from at least primary polymer particles and primary colorant particles, wherein at least one of the primary polymer particles and the particulate resin contains a wax, and the particulate resin of the outermost layer is substantially free of wax and a process for producing the toner.

Abstract: A toner for the development of an electrostatic image is provided wherein at least one layer of a particulate resin is coated onto a substantial portion of the surface of an agglomerate of particles made from at least primary polymer particles and primary colorant particles, wherein at least one of the primary polymer particles and the particulate resin contains a wax, and the particulate resin of the outermost layer is substantially free of wax and a process for producing the toner.

Abstract: A toner is provided for the development of an electrostatic image which includes an agglomerate of particles obtained by agglomerating at least primary polymer particles and primary colorant particles, wherein the toner has a THF insoluble content of from 15% to 80% and the toner further includes a wax having a melting point of 30 to 100° C., and the method for producing the same.

Abstract: A toner is provided for the development of an electrostatic image which includes an agglomerate of particles obtained by agglomerating at least primary polymer particles and primary colorant particles, wherein the toner has a THF insoluble content of from 15% to 80% and the toner further includes a wax having a melting point of 30 to 100° C., and the method for producing the same.

Abstract: A toner is provided for the development of an electrostatic image which includes an agglomerate of particles obtained by agglomerating at least primary polymer particles and primary colorant particles, wherein the toner has a THF insoluble contentof from 15% to 80% and the toner further includes a wax having a melting point of 30 to 100° C., and the method for producing the same.

Abstract: An image-forming apparatus comprising at least a photoreceptor, a toner and an exposure device, wherein the photoreceptor has a photosensitive layer containing oxytitanium phthalocyanine having a distinct diffraction peak at a Bragg angle (2&thgr;±0.2) of 27.3° in the X-ray diffraction by CuK&agr;-ray, and the toner has a volume average particle diameter (Dv) of from 3 to 8 &mgr;m and satisfies a relation of 1.0≦Dv/Dn≦1.3 where Dv is the volume average particle diameter and Dn is the number average particle diameter.

Abstract: A toner for the development of an electrostatic image is provided wherein at least one layer of a particulate resin is coated onto a substantial portion of the surface of an agglomerate of particles made from at least primary polymer particles and primary colorant particles, wherein at least one of the primary polymer particles and the particulate resin contains a wax, and the particulate resin of the outermost layer is substantially free of wax and a process for producing the toner.

Abstract: An electrostatic image developing toner containing a polysiloxane having the following repeating units (a) and ##STR1## wherein R.sup.1 is a C.sub.1 -C.sub.6 alkyl group such as a methyl group or a C.sub.6 -C.sub.12 aryl group such as a phenyl group, which may be different from each other, and R.sup.2 is a C.sub.6 -C.sub.200 saturated hydrocarbon group, provided that the carbon number of R.sup.2 is larger than the carbon number of R.sup.1.