Fuji Photo Film Company, Limited

Hikaru Tsuruta

Osamu Seshimoto

Yuzo Tsunekawa

Shigeru Tezuka

Yasushi Fujisaki

Masao Kitajima

Shigehisa Shimizu

Takehiko Sato

Shigemitsu Mizutani

Yoshihiko Abe

Sigeru Tezuka

Teruaki Koizumi

Masaaki Utsui

Yoshinao Torii

A dry analytical substantially flat film chip for use as an analytical element composed of a support, at least one reagent layer and a spreading layer laminated in this order. The chip is suitable for use as is as an analytical element for liquid samples. The chip further has means for restraining a liquid sample applied to its surface from spreading beyond a predetermined area of the surface. The restraining means may be a fused nonporous area of the spreading layer or may be a portion or area of the spreading layer which has been clogged with a hydrophobic or lipophilic material to render it nonporous. The inventive film chip, in addition, provides means for preventing fraying of the edges of the porous spreading layer as well as the prevention of the generation of fiber dust during cutting of the chip.

Dry analytical element

A means for collecting and spotting a small amount of blood which comprises a cylinder, a piston, and a puncturing tip, wherein: the piston is inserted airtightly into one end of the cylinder; the puncturing tip is airtightly and exchangeably fitted onto another end of the cylinder; the puncturing tip comprises a blood conduit and a needle suspended by a spring within the blood conduit; the blood conduit has a volume which is equal to a volume of blood to be spotted to analytical means; and the needle is arranged to be pushed out from the puncturing tip by descent of the piston and then return back by ascent of the piston.

Means for collecting and spotting small amount of blood

A cartridge for storing a plurality of stacked chips having an exit for taking out the end dry analytical film chip one by one which are pushed toward the exit, and a flexible engager for inhibiting the discharge of the end chip. The exit and the engager are provided at an end portion of a side wall of the casing, the opening being provided at an end of the casing, and the flexible engager has a strength capable of releasing the end chip from the conveyor but is also capable of holding the second end, wherein the exit and the engager are provided at an end portion of a side wall of the casing, the opening being provided at an end of the casing. The engager is capable of holding the second end chip, or wherein the exit and the engager are provided at an end portion of the casing, and the engager is a non-flexible engager for releasing the end chip by its deformation occurring by the pull of the conveyor through the second end through the release of the lowermost end chip, and the exit also functions as the opening. The cartridge has a compact size and ejects only one chip while preventing the simultaneous ejection of two chips.

Cartridge for storing dry analytical film chips

A dry type chemical analysis slide has a plurality of plate members formed of thermoplastic resin and a mount which holds a detecting element formed by the use of an electrode film and is integrally sandwiched between the plate members. At least one of the plate members is formed by extrusion.

Method of assembling chemical analysis slide

An improvement of a device for measuring ion activity in a liquid sample comprising at least a pair of ion-selective electrode sheets, liquid-guiding portions for guiding a reference liquid and a liquid sample to each active surface of the pair of ion-selective electrode sheets respectively, and a bridge for electrically connecting both liquids supplied on the electrode sheets to each other is disclosed. Each ion-selective electrode sheet is arranged in such a manner that the active surface of the ion-selective electrode is placed upside down and each liquid guiding portion comprises a horizontal passage for conveying the liquid sample or the reference liquid supplied from the outside in the horizontal direction to the position just below the active surface of the ion-selective electrode, the horizontal passage being formed in a lower position than the active surface of the ion-selective electrode; and the horizontal passage is provided with a porous distributor which is bent to protrude upwardly from the horizontal passage up to the position just below the active surface of the ion-selective electrode so that the liquid sample or the reference liquid conveyed to the porous distributor can be brought into contact with the active surface of the electrode.

Ion activity measuring device

An apparatus for cutting a continuously horizontally moving web into desired lengths comprises a first slider crank mechanism 21 for horizontally reciprocating a first slider 71 mounting relatively reciprocable cutting edges 81, 82 disposed below and above the web, a second slider crank mechanism 22 for vertically reciprocating the upper cutting edge 82 via a second slider 72 to sever the web, and a third slider crank mechanism 23 for horizontally reciprocating a third slider 73 mounting a torque balancing weight 83. All three mechanisms are driven by a common rotary shaft 13, and the angles between the crank arms of the mechanisms and the magnitude of the balancing weight are selected such that the shaft torque is substantially constant over the cutting region whereat the first slider moves at a substantially constant speed approximately equal to that of the travelling web.

Growing community of inventors

Saitama, Japan

Hikaru Tsuruta