Nippon Kokan Kabushiki Kaisha

Dainichiseika Color & Chemicals Mfg. Co., Ltd.

Nkk Corporation

Danichisekia Color and Chemicals Mfg. Co., Ltd.

Kazuo Sano

Fumiyoshi Saito

Mitsuaki Uesugi

Takao Miyazaki

Hiroshi Matsunaga

Seigo Ando

Tsuneo Miyashita

Osamu Kobayashi

Masaichi Inomata

Ryo Ando

Yoshiro Yamada

Katsujiro Watanabe

Yoshihiro Shigemori

Kazuo Ishihara

Kyoji Sasaguri

Yoshihiro Okuno

Masami Harayama

Eiichi Makabe

Yasaku Watanabe

Eiko Fujiyama

Shunichi Hironaka

Kyusuke Maruyama

Kenji Iwai

Yoichi Matsuju

Tomiko Yoshida

Tomio Saito

The object of the invention is to provide a CCM calculating system being relatively inexpensive and alleviating the necessity of a spectrophotometer, a CCM calculating method and a recording medium. A CCM calculating system according to the invention calculates a blending ratio of colorants based on stored color data. The system has an input device() for inputting data of color specification values corresponding to a desired target color; and a data operation unit() for calculating a blending ratio of colorants for reproducing the target color, based on the input data of color specification values and stored color data. Since the blending ratio of colorants for reproducing the desired target color may be calculated based on the input color specification value data and stored color data, such CCM calculation may be performed without the necessity of a spectrophotometer.

CCM calculating system, CCM calculating method and recording medium

Under the conditions that there are 2 or more samples produced in a CCM toning or visual toning process by which colors are adapted to the target color and respective components such as a coloring agent defining the sample color are registered in a CCM system, the reproducibility of the samples is evaluated based on the difference &#x394;R&#x2212;n (n denotes a sample number) between spectral reflectance RST&#x2212;n obtained by actually measuring the respective samples and spectral reflectance RPR&#x2212;n obtained by the CCM simulation corresponding to the coloring agent recipe for the sample color at the same n, and determination whether toning work should be continued or not is rapidly and simply performed. On the other hand, when an abnormal sample is perceived, the difference &#x394;R'&#x2212;b of the sample obtained from the specified equations is determined and, by comparison of the difference between the target color and a color of a toning sample in the color matching process, components such as a coloring agent mixed into the abnormal sample is presumed and its mixed amount is presumed.

Method for evaluating reproducibility of toning sample by CCM

The colorimetric value at a specified temperature is determined by measuring the colorimetric value of a colored material sample at an arbitrary temperature using a color meter such as a spectrophotometer, colorimeter, or densitometer, and by correcting the measured colorimetric value on the basis of the change in colorimetric value with temperature, which change in colorimetric value is computed from the difference in colorimetric values observed for a single colored material sample at a minimum of two different temperatures. When a spectrophotometer is applied, the spectral reflectance or the spectral transmittance of the colored material sample is measured. On the other hand, spectral reflectance or spectral transmittance is measured in advance for a dye or pigment at a minimum of two different temperatures. The difference (.DELTA.K) of absorption coefficient (K), the difference (.DELTA.S) in the scattering coefficient (S), and the difference (.DELTA.D) in absorbance (D) at each wavelength are computed from the preliminarily observed spectral reflectance or spectral transmittance. The spectral transmittance or spectral reflectance observed at an arbitrary temperature is corrected to define the colorimetric value at a specified temperature using the obtained values of K, S, and D.

Method for determining colorimetric value

A linearly polarized light beam is applied to the surface of a film and is reflected therefrom. The beam is then split into three light beams by three or four optical flats. These light beams are applied to photoelectric conversion devices after passing through analyzers with fixed analyzing angles. The photoelectric conversion devices convert the beams into electric signals representing the intensities of these light beams. Two ellipsometric parameters .psi. and .DELTA. are calculated from these three electric signals.

Film thickness-measuring apparatus using linearly polarized light

An apparatus for measuring shapes, comprises a scanner, having a plurality of arms for holding an object the shape of which is to be measured, and a turntable to which one end of each of the arms is fixed; and a device for forming a silhouette image of the object including a first optical system which has an optical axis parallel to a rotating axis of the turntable and which has a light source and a light receiving unit confronting each other to allow the object to be in between the light source and the light receiving unit of the first optical system, and a second optical system which has another optical axis substantially at a right angle to the rotating axis of the turntable and which has another light source and another light receiving unit confronting each other to allow the object to be in between the light source and the light receiving unit of the second optical system. A calculating device calculates a shape of the object, based on electric signals converted from an intensity pattern of light which has been formed by the device for forming a silhouette image of the object.

Apparatus for measuring a shape

Fatigue crack position detection apparatus

A method for continuously measuring the steepness of a defective flatness of a metal strip during rolling, which comprises: detecting a variation in the relative distance between a metal strip during rolling and a distance-detecting means arranged adjacent to the surface of said metal strip, during the travel thereof between two support rolls arranged at a prescribed spacing, by means of said distance-detecting means, as a vibration including a vibration corresponding to a defective flatness produced in said metal strip; calculating the natural vibration frequency of said metal strip during the travel thereof between said two support rolls, from the detected value of the tension applied to said metal strip during the travel thereof between said two support rolls, the specific weight of said metal strip, and the distance between said two support rolls; cutting off the frequency components, which are below said calculated value of the frequency of said metal strip, from said detected value of the vibration of said metal strip obtained by said distance-detecting means, to detect the vibration of said metal strip, which corresponds to only the defective flatness of said metal strip; detecting, from said detected value thus obtained of the vibration of said metal strip, which corresponds to only said defective flatness, the amplitude and the frequency of said vibration; and, continuously calculating the ratio amplitude/(travelling speed/frequency) of said vibration, i.e., the accurate steepness of the defective flatness of said metal strip, from the detected values thus obtained of the amplitude and the frequency of said vibration, and the separately determined travelling speed of said metal strip.

Method for continuously measuring steepness of defective flatness of

The swirling burner comprises a vertical combustion chamber and an annular blast member located beneath the combustion chamber and provided with a central cylindrical space and a plurality of alternately superposed fuel gas passages and air passages. These passages are communicated with the cylindrical space through blow openings which are inclined in the same direction with respect to the radii of the cylindrical space. In a modification, the burner is further combined with straight blowing type burner for promoting the effect of the air-gas mixing.

Swirling burners for use in hot blast stoves

A device for making high temperature reformed gas from coke oven gas and blast furnace gas comprises a continuous heating apparatus for preheating a coke oven gas; and a first system including (a) an intermittent heat exchanger containing therein a packing bed of the heat-accumulator type for preheating a blast furnace gas; (b) a separate cyclone-type gas mixing chamber for mixing the preheated raw gases; and (c) an intermittent reforming furnace containing therein a packing bed of the heat-accumulator type impregnated with a catalyst. A second system comprising counterpart elements (a), (b) and (c) is connected to the apparatus (a) in parallel with the first system so as to be operated alternately with said first system. Bypass valves are preferably provided to feed the blast furnace gas directly to the gas mixing chamber bypassing the intermittent heat exchanger.

Device for making high temperature reformed gas

Growing community of inventors

Tokyo, Japan

Kazuo Sano