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131results about How to "Good time stability" patented technology

Polyhydroxyalkanoate having amide group and sulfonic group, method of producing the same, charge controlling agent containing novel polyhydroxyalaknaote, toner binder, toner, and image forming apparatus using the toner

A polyhydroxyalkanoate comprises a unit of formula (1): —(O—CH((CH2)mSASO2R)CH2C(═O))— wherein R is selected from the group consisting of OH, a halogen atom, ONa, OK, OCH3 and OC2H5; A represents a substituted or unsubstituted aliphatic hydrocarbon structure; m is an integer number selected from 1 to 8; and in the case where a plurality of units exist in the same molecule, R, A and m in one unit can be different from them in another unit respectively. A method of producing the polyhydroxyalkanoate comprises the step of reacting a polyhydroxyalkanoate comprising a unit of formula (18): —(O—CH((CH2)mBr)CH2C(═O))—, wherein m is an integer number selected from 1 to 8, and in the case where a plurality of units exist in the same molecule, m in one unit can be different from that in another unit, with at least one type of compounds of formula (19): HS-A1-SO2R15 wherein R15 is selected from the group consisting of OH, a halogen atom, ONa, OK, OCH3 and OC2H5 and A1 is a substituted or unsubstituted aliphatic hydrocarbon structure, and in the case where a plurality of types of compounds exist in the same molecule, R15 and A1 in one unit can be different from them in another unit respectively.
Owner:CANON KK

Three-dimensional micro nanometer contact scanning probe

The invention discloses a three-dimensional micro nanometer contact scanning probe, which is characterized in that in the front section of a cylinder, a Michelson interferometer is fixedly arranged in an installation box; in a rear section of the cylinder, a two-dimensional sensor is fixedly installed on an installation plate; a fixing ring is arranged at the front end of the front section of thecylinder, a cross suspension sheet is arranged in the center of the fixing ring, each cantilever of the cross suspension sheet is connected with the fixing ring through each cantilever spring sheet to form a suspension structure, a central planar reflection mirror and at least one cantilever planar reflection mirror are respectively positioned on the cross suspension sheet, emergent light of the Michelson interferometer is projected on the central planar reflection mirror, emergent light of the two-dimensional sensor is projected on the cantilever planar reflection mirror, and on one side plane of the cross suspension sheet towards the outside of the cylinder, the scanning probe is fixedly installed in the center of the cross suspension sheet. The three-line structured light machine vision width measurement method can acquire detection effects with large range, high accuracy, high flexibility and small measurement force.
Owner:HEFEI UNIV OF TECH

Double-plate linear motion eddy current retarder

The invention discloses a double-plate linear motion eddy current retarder, and belongs to the technical field of spacecraft on-track micro-vibration control. The double-plate linear motion eddy current retarder comprises a center shaft, a spring, a mounting cylinder, an outer cylinder, a first metal plate, a permanent magnet, a connecting shaft, a second metal plate, a magnetic shielding end cover and a magnetic shielding cylinder; the bottom of the mounting cylinder is fixed at the end part of the outer cylinder; a linear bearing is mounted in the mounting cylinder; the center shaft is sleeved in the linear bearing; the spring coats the mounting cylinder; the magnetic shielding cylinder is fixed in the outer cylinder; the magnetic shielding end cover is mounted at an opening end of the magnetic shielding cylinder; the permanent magnet is mounted in a closed space consisting of the magnetic shielding cylinder and the magnetic shielding end cover; after the connecting shaft penetrates through the permanent magnet, the top end of the connecting shaft is connected with the tail end of the center shaft; the first metal plate and the second metal plate are respectively fixedly connected to the two ends of the connecting shaft, and are respectively positioned at two ends of the polarization direction of the permanent magnet. The double-plate linear motion eddy current retarder is applied to the spacecraft on-track micro-vibration control, uses an electromagnetic induction principle for generating damping, and can adapt to such complex environments as high space vacuum and thermal alternation.
Owner:BEIJING INST OF SPACECRAFT SYST ENG
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