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 Chemical analysis apparatus

Details
Inventors: Muraishi, Katsuaki;
Assignee: Fuji Photo Film Co., Ltd. (Kanagawa, JP)
Primary Examiner: Warden; Robert J.
Assistant Examiner: Trembley; Theresa A.
Attorney, Agent or Firm: Sughrue, Mion, Zinn, Macpeak & Seas

A chemical analysis apparatus is provided with an incubator having compartments for housing and incubating a chemical analysis slide having a reagent layer with a sample material applied thereon, and a read-out head moveable along the housing compartments to stand facing the reagent layer of the chemical analysis slide housed in the housing compartment via a read-out opening formed in the housing compartment, thereby to emit measuring light to the reagent layer and to measure an optical density of light reflected by the reagent layer. The chemical analysis apparatus comprises a temperature-controlled chamber for housing the incubator therein, a first temperature adjustment system provided with a heater and a temperature sensor secured to the incubator for maintaining the temperature in the housing compartment at a predetermined value, and a second temperature adjustment system provided with a heater disposed in the temperature-controlled chamber and a temperature sensor secured to the read-out head or disposed in the temperature-controlled chamber, thereby to maintain the temperature in the temperature-controlled chamber at the predetermined value.

DETAILED DESCRIPTION The primary object of the present invention is to provide a chemical analysis apparatus wherein the temperature in a slide housing compartment of an incubator is accurately maintained at a predetermined value.
Another object of the present invention is to provide a chemical analysis apparatus wherein stabilization of the temperature of the external air in the vicinity of a read-out opening, decrease of the distance between a read-out head and a chemical analysis slide, increase in the heat capacity of an incubator, and prevention of adverse effects of external light on the read-out head are achieved simultaneously with a simple configuration.
The specific object of the present invention is to provide a chemical analysis apparatus which improves the accuracy of quantitative analysis.
The present invention provides a chemical analysis apparatus provided with an incubator having a plurality of housing compartments for respectively housing a chemical analysis slide having a reagent layer with a substance, which is to be measured, applied thereon, and for incubating the chemical analysis slide, and a read-out head moveable along said housing compartments to stand facing the reagent layer of the chemical analysis slide housed in one of said housing compartments via a read-out opening formed in each of the housing compartments, thereby to emit measuring light to the reagent layer and to measure the optical density of light reflected by the reagent layer, wherein the improvement comprises the provision of: i) a temperature-controlled chamber for housing said incubator therein, ii) a first temperature adjustment means provided with a heater and a temperature sensor secured to said incubator, thereby to maintain the temperature in each of said housing compartments at a predetermined value, and iii) a second temperature adjustment means provided with a heater disposed in said temperature-controlled chamber and a temperature sensor secured to said read-out head, thereby to maintain the temperature in said temperature-controlled chamber at said predetermined value



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