Sekisui Medical Co., Ltd.

Ricoh Company, Ltd.

Rioch Company, Limited

Mayumi Yoshida

Mitsuaki Yamamoto

Shinya Yokokawa

Tomo Shimizu

Keigo Kono

Shigeru Watanabe

Shinji Kato

Hiromitsu Takagaki

Hisao Murayama

Shunji Kato

Haruji Mizuishi

Keigo Kohno

Kenji Karashima

Hisashi Fuzisaki

Marie Asami

Hiroshi Yoshinaga

Ken Amemiya

Kenzo Tatsumi

Masaru Tanaka

Takeo Suda

Motoki Morita

Yasushi Akiba

Toshitaka Yamaguchi

Yusuke Shimbo

A problem of the present invention is to provide an immunochromatographic test strip avoiding agglutination of colloidal gold while red blood cells in whole blood are agglutinated and then separated and removed in the case of using polybrene as a hemagglutinating agent and the colloidal gold conjugates as a detection reagent, and to provide immunochromatography using the test strip. To solve the problem, the present inventors reviewed the composition of the existing reagent itself from a completely different viewpoint rather than the selection of type or amount of polyanions, and as a result of extensive study on each element, the inventors surprisingly found that agglutination of colloidal gold may be suppressed by using a particular additive without neutralization by polyanions.

Immunochromatographic test strip for detecting object in red blood cell-containing sample and immunochromatography using the test strip

A problem to be solved by the present invention is to provide an immunochromatographic test strip and a detection method using immunochromatography avoiding aggregation of colloidal gold conjugates while red blood cells in whole blood are agglutinated and then separated and removed in the case of using polybrene as a blood-agglutinating agent and the colloidal gold conjugates as a detection reagent. To solve the problem, the present inventers reviewed a past reagent configuration itself from a completely different viewpoint rather than selecting type and amount of polyanions and, as a result of extensive study on each element, the inventers surprisingly found that aggregation of colloidal gold can be suppressed by using a certain buffer solution without using neutralization by polyanions.

Immunochromatographic test strip and detection method using immunochromatography for detecting object in red blood cell-containing sample

A problem to be solved by the present invention is to provide an immunochromatographic test strip and a detection method using immunochromatography avoiding aggregation of colloidal gold conjugates while red blood cells in whole blood are agglutinated and then separated and removed in the case of using polybrene as a blood-agglutinating agent and the colloidal gold conjugates as a detection reagent. To solve the problem, the present inventors reviewed a past reagent configuration itself from a completely different viewpoint rather than selecting type and amount of polyanions and, as a result of extensive study on each element, the inventors surprisingly found that aggregation of colloidal gold can be suppressed by using a certain buffer solution without using neutralization by polyanions.

Immunochromatographic test strip and detection method using immunochromatography for detecting target in red blood cell-containing sample

A contact type image transferring device and method incorporated in an image forming apparatus for cleaning a residual toner on a transfer roller. The transfer roller is in contact with a photoconductive drum at a first force and forms nip between the roller and the drum. A sheet of paper passes through the nip and a toner image on the drum is transferred to the sheet of paper. When the sheet of paper is not at the nip, the transfer roller is moved such that the force of the roller against the drum is a second force which is different from the first force. A cleaning bias voltage is applied to the roller and toner on the roller is transferred to the drum.

Apparatus and method for cleaning a transfer device of an image forming

There is provided an image forming device capable of preventing smudges on the background of an image due to excess toner replenishment caused by a failure in stirring developer and toner enough to charge the toner or scattering of replenished toner without being charged. A toner conveying member for conveying replenished toner from a toner replenishing portion through a toner replenishing port to a developer stirring and conveying member is constructed by a screw member unitarily formed with the developer stirring and conveying member. The screw member has a spiral conveying fin capable of conveying the replenished toner at relatively high speed. The replenished toner is delivered to a toner replenishing portion provided in the upstream of a developer receiving portion of the screw member.

Image forming device with improved mixing of circulated developer with

A contact type image transferring system and method, incorporated in an image forming apparatus, for cleaning a residual toner on a transfer roller. The transfer roller is in contact with a photoconductive drum and forms a nip between the roller and the drum. A sheet of paper passes through the nip and a toner image on the drum is transferred to the sheet of paper. When the sheet of paper is not at the nip, not only a transfer voltage but also a charging voltage is applied at a same time. The polarities of the voltages applied to the charger and to the transfer roller cause the toner on the transfer roller to be removed.

An image forming apparatus capable of collecting a toner remaining on an image carrier after image transfer and conveying the collected toner to a developing unit to reuse it. A toner supplement roller and a toner conveyor are so controlled as to maintain the supplement of a fresh toner from a hopper to the developing unit and the supplement of the collected toner from the toner conveyor to the developing unit in a ratio lying in a predetermined range.

Image forming apparatus with toner recycling device

A scorotron charging device applicable to electrophotographic image forming equipment and having a main charger with discharge wires and a grid and applying voltages to the wires and the grid by respective power sources. The two power sources are controlled by the same control signal. In response to the control signal, a voltage starts being applied to the grid before a voltage is applied to said wires and ends being applied to the grid after the voltage application to the wires has ended. This allows the charge potential of a photoconductive element to rise and fall rapidly.

Charging device for electrophotographic equipment

Growing community of inventors

Tokyo, Japan

Mayumi Yoshida