Abstract: An jet recording apparatus, which records on a recording medium by discharging ink form a recording head, is provided with at least two electrothermal converting elements each having different amount of heat generation, and driven each individually, which are arranged in the ink flow path communicated with the discharge port of the recording head along the ink flow path each in different distance to the discharge port, and when the pre-discharge is performed without participating in recording, driving signals needed for discharging ink are supplied to the electrothermal converting element on the side near to the discharge port subsequent to being supplied to the electrothermal converting element on the side away from the discharge port.

Abstract: A liquid container includes a lever having one end supported to an outer wall of a housing containing a liquid therein and the other end as a free end, the lever being elastically deformable. The liquid container further includes a projection provided in an area of the housing which is opposite to and away from the supported one end of the lever, the projection covering at least a part of a space between the free end of the lever and the housing in the above area. By virtue of the projection, the lever can be protected against accidental external forces. In a cap-equipped liquid container, a straight line connecting a projected end of the projection of the liquid container and a distal end of a tab of a cap is set to cross a movable range of the lever provided on the liquid container in which the lever is allowed to angularly move with elastic deformation thereof.

Abstract: The present invention provides a method of forming a model for a circuit for simulating an electromagnetic interference, the model being described by a combination of at least one variable resistance and at least one load capacitance, wherein a variable resistance value of the at least one variable resistance and a load capacitance value of the at least one load capacitance are obtained based on at least one current flowing through at least one current path between at least one set of power terminals.

Abstract: An immunoassay element for quantitatively analyzing a macromolecular antigen by determining the change in enzymatic activity caused by a reaction between the macromolecular polymer antigen and an enzyme-labelled antibody. The immunoassay element comprises a substrate layer containing a non-diffusible substrate which forms a diffusible material in the presence of the enzyme, and a reagent layer containing a fragmenting enzyme for further fragmenting the diffusible material into a lower molecular weight product. Also provided is a process for quantitatively analyzing a macromolecular antigen in a sample by the use of the immunoassay element.

Abstract: An jet recording apparatus, which records on a recording medium by discharging ink form a recording head, is provided with at least two electrothermal converting elements each having different amount of heat generation, and driven each individually, which are arranged in the ink flow path communicated with the discharge port of the recording head along the ink flow path each in different distance to the discharge port, and when the pre-discharge is performed without participating in recording, driving signals needed for discharging ink are supplied to the electrothermal converting element on the side near to the discharge port subsequent to being supplied to the electrothermal converting element on the side away from the discharge port.

Abstract: A water-soluble fluorescent intercalator compound having the formula: F—La—X F is a fluorescent moiety, X is a divalent cyclic group, and La is a linking group, and at least one of X and La has a site imparting water solubility to the compound or a site that is convertible into a site imparting water solubility to the compound is favorably employable as a fluorescent intercalator in a method for fluorometrically detecting complementary DNA fragments.

Abstract: A macro array comprises a film-shaped hard porous body and a plurality of spots, which contain test substances and are arrayed on the film-shaped hard porous body. The film-shaped hard porous body may be constituted of a surface layer region, which is provided with through-pores having a comparatively small mean pore diameter, and a base layer region, which is provided with through-pores having a comparatively large mean pore diameter. The surface of the film-shaped hard porous body, on which surface the spots are to be arrayed, may be coated with an auxiliary substance for promoting fixation of the test substances to the surface of the film-shaped hard porous body.

Abstract: The present invention provides a method of forming a model for a circuit for simulating an electromagnetic interference, the model being described by a combination of at least one variable resistance and at least one load capacitance, wherein a variable resistance value of the at least one variable resistance and a load capacitance value of the at least one load capacitance are obtained based on at least one current flowing through at least one current path between at least one set of power terminals.

Abstract: An object of the present invention is to provide a method which comprises adhering a biological sample to a film, cutting out a target area of the sample, and then peeling off the film to collect the fragment which was cut out, wherein the operability is good and a cutting sharpness in cutting by a laser beam is good. The present invention provides a method for cutting a biological sample by light irradiation, which comprises locating the biological sample and a colored film having a thickness of 3 to 6 &mgr;m onto one side of a support, and irradiating the biological sample with a light beam, thereby cutting out a target area of the biological sample.

Abstract: An ink tank having an absorbing member for holding therein ink to be supplied to a recording head for discharging ink to thereby effect recording, a tank container containing the absorbing member therein, a buffer portion capable of temporarily containing the ink therein, and an atmosphere communicating port disposed in the buffer portion and communicating the interior of the ink containing portion with the atmosphere, the buffer portion is disposed on a side portion of the absorbing member, and the direction from the absorbing member toward the buffer portion is a direction intersecting with the scanning direction of a carriage.

Abstract: A method for measuring protease such as matrix metalloproteinase which comprising steps of (1) bringing a biological sample such as protease-containing tissue slices and tissue extracts into contact with a thin membrane which comprises a protease substrate and a hardening agent and is formed on a surface of a support; and (2) detecting the trace of digestion formed on the thin membrane by the action of protease with the naked eyes or under a microscope, and a thin membrane used for said method.

Abstract: A method of detecting nucleic acid fragments in plural samples is performed by the steps of: attaching an electroconductive label to nucleic acid fragments in one sample and attaching a different electroconductive label to nucleic acid fragments in another sample; preparing a mixture of these samples; spotting the mixture on an electroconductive microarray having plural electrodes onto which probe molecules complementary to the nucleic acid fragments are fixed, so that hybridization between the nucleic acid fragments and the probe molecules on the electroconductive microarray can proceed to form hybrid structures; applying to the electrode an electric potential corresponding to the oxidation-reduction potential of the former label and detecting on the electrode an electric current; applying to the electrode an electric potential corresponding to the oxidation-reduction potential of the latter label and detecting on the electrode an electric current; and comparing the electric current detected in the former de

Abstract: A method of analyzing a nucleic acid fragment sample to judge whether the nucleic acid fragment sample is uncomplementary, partly complementary or complementary to a DNA fragment in its specific base sequence is conducted by the steps of: bringing an aqueous solution of the nucleic acid fragment sample into contact with a DNA chip having an electroconductive substrate and the DNA fragment fixed onto the substrate in the presence of an electrochemical thread intercalator; measuring an electric current flowing from or to the electroconductive substrate along the DNA fragment under application of a potential to the substrate; and comparing the electric current measured above with a referential electric current which is prepared employing a DNA chip equivalent to the above DNA chip, the intercalator, and an aqueous solution of a nucleic acid fragment which is complementary to the DNA fragment of the DNA chip.

Abstract: To provide an ink filling method for pouring ink into an ink tank to be mounted to a printer, an ink filling apparatus, and the ink tank to be properly filled with the ink by the ink filling method. The ink filling method includes the steps of: pouring a predetermined amount of ink into a housing in a state in which an ink holding member is opened to the atmosphere, and filling the ink holding member with the ink by imparting, to the ink poured, an inertial force, which is greater than a sum of a static ink holding force of the ink holding member and a dynamic resistant force to movement of the ink.

Abstract: The present invention provides a power model for a semiconductor integrated circuit, wherein the power model comprises a logic gate circuit part representing an operating part of the semiconductor integrated circuit and an equivalent internal capacitive part representing a non-operating part of the semiconductor integrated circuit.

Abstract: A nucleic acid detective means composed of an electrode and plural peptide nucleic acids which are fixed onto the electrode via covalent bonding is favorably employed for electrochemically detecting complementary DNA fragments The covalent bonding between the electrode and the peptide nucleic acids are favorably produced by the reaction between a reactive hydrogen-containing group attached to the peptide nucleic acid and a vinylsulfonyl group or a reactive precursor thereof attached to the electrode.

Abstract: A method of for testing complementation of nucleic acid fragment is performed by the steps of:

Abstract: A water-soluble fluorescent intercalator compound having the formula:

Abstract: A method for quantitatively analyzing a biochemical compound such as glucose or cholesterol is performed by bringing the biochemical compound into contact with double stranded DNA fragments which are fixed onto a surface of an electrode at their one terminals and in which electrochemically active threading intercalators are intercalated, in an aqueous medium under application of electric potential to the electrode in the presence of an oxidase capable of oxidizing the biochemical compound and becoming a reduced oxidase, and detecting an electric current flowing between the electrode and another electrode placed in the aqueous medium.