125results about How to "Improve development performance" patented technology

A magnetic carrier having magnetic carrier particles each containing at least a magnetic core particle and a resin; the magnetic carrier having a resistivity of from 1.0×106 Ω·cm or more to 1.0×1010 Ω·cm or less at an electric-field intensity of 1.0×103 V / cm as found by measuring dynamic impedance; electric-field intensity E(109) at which the resistivity of the magnetic carrier comes to 1.0×109 Ω·cm being 2.0×104 V / cm or less, and electric-field intensity E(108) at which the resistivity of the magnetic carrier comes to 1.0×108 Ω·cm being from 5.0×103 V / cm or more to 2.8×104 V / cm or less; and the electric-field intensity E(108) and the electric-field intensity E(109) being in a ratio, E(108) / E(109), of from 1.0 or more to 5.0 or less.

Provided is a yellow toner having toner particles each containing at least a binder resin, a colorant, and a polar resin, the yellow toner being characterized in that: the colorant is a coloring compound having a specific structure; in a microscopic compression test at a measurement temperature of 25° C., the toner has a recovery ratio Z(25) of 40 to 80%; and the toner has a glass transition temperature (TgA) measured with a differential scanning calorimeter (DSC) of 40° C. to 60° C. and a temperature (P1) of the highest endothermic peak measured with the DSC of 70° C. to 90° C., and the temperature (P1) of the highest endothermic peak and the glass transition temperature (TgA) satisfy the relationship of 15° C.≦P1−TgA≦50° C.

Provided is a two-component developer having excellent developing performance and little change in image concentration, and achieving long-term suppression of image defects such as transfer failure and fogging.Provided is a two-component developer containing a magnetic carrier and a toner, wherein the magnetic carrier has magnetic carrier particles comprising a silicone resin B coated on the surfaces of filled core particles in which pores of porous magnetic core particles are filled with a silicone resin A, the silicone resin A is a silicone resin cured in the presence of a non-metal catalyst or without a catalyst, while the silicone resin B is a silicone resin cured in the presence of a metal catalyst having titanium or zirconium, and the toner contains a binder resin, a release agent and a colorant, and has an average circularity of 0.940 or more.

The invention discloses a multiple-stratum-series tight sandstone gas reservoir well spacing method. The method includes the following steps that first, based on high-resolution sequence stratigraphy, distribution of sand bodies is depicted, an effective reservoir stratum is predicted through the earthquake and well logging technology, and an enrichment region is preferentially selected; second, based on a favorable region, a longitudinal structure of the sand bodies is fine dissected through the geology and well logging technology, and therefore the horizontal distribution law of the sand bodies can be researched; third, in the preferential favorable region, well spacing is performed according to conditions. The well spacing method is reasonable and takes the complex geology that multiple gas-bearing series longitudinally develop in an upper palaeozoic tight sandstone gas reservoir, the single layer yield is low and the lateral variety of the reservoir stratum is fast into consideration, the drilling success of a development well can be guaranteed, the development effect can be improved to the maximum extent, and the economical and effective development of the tight sandstone gas reservoir is achieved.

An electrophotographic toner showing good cleanability and is suitable for use in developing an electrostatic latent image formed on an amorphous-silicon photosensitive member is provided. The toner includes toner particles each comprising a binder resin and a colorant, and inorganic fine powder A. The inorganic fine powder A contains 88.0-97.0 wt. % of a rare earth compound comprising a rare earth oxide. The rare earth compound contains 40.0-65.0 wt. % of Ce (calculated as CeO2), 25.0-45.0 wt. % of La (calculated as La2O3), 1.0-10.0 wt. % of Nd (calculated as Nd2O3) and 1.0-10.0 wt. % of Pr (calculated as Pr6O11). The rare earth compound contains further a fluorinated rare earth compound in such an amount as to provide the inorganic fine powder A with a fluorine content of 2.0-11.0 wt. %.

In a toner comprising toner particles which comprise toner base particles containing at least a binder resin and a magnetic material, and inorganic fine particles, the toner base particles have been obtained through a pulverization step; and, the toner base particles having a circle-equivalent diameter of from 3 μm or more to 400 μm or less as measured with a flow type particle image analyzer have an average circularity of from 0.935 or more to less than 0.970; and the toner base particles have an average surface roughness of from 5.0 nm or more to less than 35.0 nm as measured with a scanning probe microscope. The toner can enjoy less toner consumption per sheet of images, can achieve a long lifetime in a smaller quantity of toner, and has superior developing performance in any environment.

The present invention provides a magnetic carrier that can stably impart charge to a toner on a long term basis and that exhibits an excellent toner separation property and thus exhibits an excellent developing performance. This magnetic carrier is a magnetic carrier in which a vinyl resin coats the surface of a resin-filled core in which a resin is filled in pores of a porous ferrite particle, wherein the resistivity, Mg content, and total content of Sr and Ca oxides of the porous ferrite particle exhibit prescribed values and the magnetic carrier has a total area—in the backscattered electron projection image obtained by observation using a scanning electron microscope at an acceleration voltage of 2.0 kV—for a region originating with the porous ferrite particle of from at least 0.2 area % to not more than 5.0 area % with reference to the projected area of the magnetic carrier.

A toner is constituted by at least a binder resin, a colorant and a wax. The binder resin has been formed from monomers including a vinyl monomer and polyester-forming monomers containing at least a polybasic carboxylic acid having three or more carboxyl groups or its anhydride, and comprises at least a hybrid resin comprising a vinyl polymer unit and a polyester unit.

Provided is a magnetic carrier excellent in leakage, uniformity of a solid image having satisfactory charging stability and developing performance at low electric field. The magnetic carrier is a magnetic carrier comprising: a magnetic substance-dispersed resin carrier core, which contains a magnetic substance and a binding resin, and a coating resin on a surface thereof, wherein: the carrier core has resistivity at 1000 V / cm of 5.0×106-8.0×107 Ω·cm, the magnetic substance has a number average particle diameter of 0.20-0.35 μm; and comprises magnetic-substance particles having vertexes and a particle diameter of 0.53 μm or more in an amount of 10.0-32.0 vol % based on a total amount of the magnetic substance; and wherein: the carrier core has Fe2O3 content of 98.00% by mass or more; and ZnO content of 0.06-0.50% by mass.

A toner for developing an electrostatic image includes a binder resin, a colorant and a wax. The toner shows heat-absorption characteristics represented by a DSC heat-absorption curve obtained on temperature increase in a temperature range of 30-150 DEG C. by a differential scanning colorimeter (DSC). The DSC heat-absorption curve shows a maximum heat-absorption peak (P1) in a temperature range of 70-90 DEG C. The DSC curve also provides a differential curve showing a first maximum (Max1) on a lowest temperature side at a temperature (T1) of 50-65 DEG C., showing a second maximum (Max2) on a next lowest temperature side at a temperature (T2) of 65-85 DEG C., and showing a minimum (Min1) on a highest temperature side at a temperature (T3) of at least 95 DEG C. Because of the DSC heat-absorption characteristics, the toner exhibits excellent fixability (including anti-offset characteristic) over a wide temperature range and excellent continuous image forming characteristic.

The invention provides a visual multi-database ETL integration method and system. The visual multi-database ETL integration method includes the following steps that source databases and target databases are connected; the SQL statements of source lists of the source databases are obtained through ETL matching of the source databases and the target databases; the SQL statements are optimized and executed, and the ETL data of the multiple source databases are obtained and introduced into target lists of the target databases. The visual multi-database ETL integration system comprises a database management system layer and a semantic layer, the database management system layer connects the source databases with the target databases, and the SQL statements of the source lists of the source databases are obtained through ETL matching of the source databases and the target databases; the semantic layer optimizes and executes the SQL statements, obtains the ETL data of the multiple source databases and introduces the ETL data to the target lists of the target databases. The visual multi-database ETL integration method and system reduce the complexity degree of integration of the multiple databases, improve the integration efficiency of the multiple databases, and reduce the risk of integration of the multiple databases.

The invention relates to a method for improving recovery ratio of massive oil pool with large monolayer thickness by utilizing subsection fireflooding exploitation. The method comprises the following steps: selecting oil pool meeting the following requirements through exploration; taking viscosity-temperature inflection point temperature of which the oil layer temperature exceeds the temperature of underground raw oil as a boundary to judge whether the oil layer is explored or not, using the heating volume occupied by each small layer as a weight factor of output compartment, and carrying outoutput compartment according to a small layer output compartment module; distributing multistage grading perforations on a gas well casing by utilizing space thickness of the oil layer in the length wise direction and referring to the distribution of the interlayer in the oil layer, firing the perforations at the bottom inside each stage; and expanding the ultimate swept volume of the oil layer by making full use of the space of the oil layer in the length wise direction and the lapout characteristic of the combustion of oil in situ. The method of the invention improves the recovery ratio of a thickened oil block.

A developing assembly is disclosed having at least a developer container, a developer-carrying member and a developer layer thickness regulation member, wherein the developer is composed mainly of toner particles containing at least a binder resin and a colorant, and conductive fine particles, and the developer-carrying member has a substrate and a surface layer formed on the substrate of a non-magnetic metal, an alloy or a metallic compound. This developing assembly causes no sleeve ghost, enables electrostatic latent images to be faithfully developed, causes no fading phenomenon, and enables high-density images to be formed in every environment. Also disclosed are a process cartridge having the developing assembly and the latent-image-bearing member integrally set as one unit detachably mountable on the main body of an image-forming apparatus, and an image-forming method making use of the features of this developing assembly.

The present invention relates to laser processing, opto electromechanical technology and image processing technology, and is especially one multifunctional laser cutter with one measurement unit. The multifunctional laser cutter has adjustable laser spot with changeable spot shape and energy distribution for boring, cutting, welding and other functions. It includes one optical system and one signal acquiring, signal processing and controlling device. The optical system includes an He-Ne laser, a CO2 laser, a plane mirror, a beam expanding collimator, a positive rotating prism, a negative rotating prism and a focusing lens; and the signal acquiring, signal processing and controlling device includes a signal acquiring and processing unit, a controller and a feedback circuit.

The invention relates to a method for improving recovery rate of a thick massive viscous oil reservoir by controlling burning gas injection speed, which mainly comprises the following steps of: determining the thickness and residual oil saturation of an oil layer at the burning front edge by stages according to the condition and rule of fire-flooding live wire wave by combining fine research results of double analogs in a massive oil reservoir chamber; then determining planar residual oil saturation and residual oil at different positions apart from a gas injection well, and predicting the burned section area of the burning front edge, the non-homogeneity of the reservoir and the optimal configuration relationship between the residual oil and the gas injection speed; and finally, dynamically adjusting the single-well gas injection speed by stages, and selecting a variable and lower burning gas injection speed to maintain stable and normal burning on the premise of ensuring combustion. The method can fulfill the purposes of improving the burning wave and volume of the massive oil reservoir, the development effect of the burning oil layer and the final recovery rate.

Provided is toner that contains a toner particle, and an external additive containing a strontium titanate particle, wherein the toner has an average circularity of at least 0.935 and not more than 0.995, the strontium titanate particle has a number-average primary particle diameter of at least 10 nm and not more than 60 nm, the strontium titanate particle has a peak in the range of 39.700°±0.150° and a peak in the range of 46.200°±0.150° in a CuKα x-ray diffraction spectrum obtained in the 2θ range of at least 10° and not more than 90° where θ is the Bragg angle, and the ratio of the area Sb of the peak at 46.200°±0.150° to the area Sa of the peak at 39.700°±0.150° is at least 1.80 and not more than 2.30.

The invention discloses an optical smoke-sensing detection test device and a test method thereof, belonging to the technical field of fire detection. The invention also provides an optical smoke-sensing detection test device with complete functions and the test method thereof. The optical smoke-sensing detection test device can exactly measure five types of typical smoke of different wavelength spectrums on different grain sizes, different colors and different temperatures, an optical scattering smoke-sensing angle is 6-354 degrees, and the smoke-sensing characteristics and a quantization rule of a space with the size of S phi 10-160mm are detected under the condition of keeping a basic constant condition, and reliable design basis and technical support are provided for a point-type photoelectric smoke-sensing fire detector with excellent development performances. The optical smoke-sensing detection test device disclosed by the invention comprises an optical smoke-sensing measurement room, a controller, a smoke generator and a centrifugal fan, wherein an outlet of the smoke generator is connected with an inlet of the optical smoke-sensing measurement room through a smoke guide and control pipe, an outlet of the optical smoke-sensing measurement room is connected with an inlet of the smoke generator through the smoke guide and control pipe, and the central fan is connected with the smoke generator.

The invention discloses an image segmentation method based on improved whale optimal fuzzy clustering, so as to mainly solve the problems of serious loss and long segmentation time after image information segmentation in the prior art. The method comprises the realization steps: 1, an image is inputted and the gray levels of all pixel points are acquired; 2, c clustering centers are selected to segment the image into c classes; 3, n whales are generated, wherein each whale has a c-dimensional vector, which represents a possible solution of a set of clustering centers; 4, with the reciprocal ofa fast fuzzy C-means clustering objective function as a fitness value, the optimal clustering center is searched; and 5, according to the searched set of clustering centers corresponding to the maximum fitness value, image segmentation is realized, pixel points with the gray levels in the same membership grade interval are classified as one class, and an image after segmentation is outputted. Through combining the optimization result and the fuzzy clustering image segmentation, the image segmentation effects are improved, and the method can be used for target detection, video monitoring and medical imaging.

The reverse engineering robot system belonged to advanced manufacturing technique field comprises a detection head, a robot, a computer, a control cabinet, and a deflection machine. When user inputs basic detection parameters, the system programs automatically the scan path, controls robot, deflection machine and detection head to complete the detection. Wherein, it uses the robot control flexibility to realize the integrative path programming, uses the environmental adaptation ability and anti-noise ability of robot to satisfy industrial field require, and uses active automatic detection mode to realize automation and exploitability for post processing.

Provided is toner that contains a toner particle, and an external additive containing a strontium titanate particle, wherein the toner has an average circularity of at least 0.935 and not more than 0.995, the strontium titanate particle has a number-average primary particle diameter of at least 10 nm and not more than 60 nm, the strontium titanate particle has a peak in the range of 39.700°±0.150° and a peak in the range of 46.200°±0.150° in a CuKα x-ray diffraction spectrum obtained in the 2θ range of at least 10° and not more than 90° where θ is the Bragg angle, and the ratio of the area Sb of the peak at 46.200°±0.150° to the area Sa of the peak at 39.700°±0.150° is at least 1.80 and not more than 2.30.

The present invention provides a magnetic carrier that can stably impart charge to a toner on a long term basis and that exhibits an excellent toner separation property and thus exhibits an excellent developing performance. This magnetic carrier is a magnetic carrier in which a vinyl resin coats the surface of a resin-filled core in which a resin is filled in pores of a porous ferrite particle, wherein the resistivity, Mg content, and total content of Sr and Ca oxides of the porous ferrite particle exhibit prescribed values and the magnetic carrier has a total area—in the backscattered electron projection image obtained by observation using a scanning electron microscope at an acceleration voltage of 2.0 kV—for a region originating with the porous ferrite particle of from at least 0.2 area % to not more than 5.0 area % with reference to the projected area of the magnetic carrier.

The invention discloses a cased hole completion multi-section-fractured horizontal well selective production pipe column and a working method thereof, wherein the pipe column and the method are designed for selective and section-by-section production of a horizontal well. The outer side of a waterproof oil pipe of the pipe column is connected with a multiple-completion packer of a partition sleeve. The inner side of the waterproof oil pipe is connected with a deep well pump, a sealed inserted pipe, pressure-fixed valves corresponding to all partitions of the sleeve, a sealed cylinder and a bottom end guide plug. The upper end of the bottom-sealed pipe with holes is connected with the sealed inserted pipe. A pipe body is connected with the pressure-fixed valves in all the partitions and the sealed cylinder. During work, the horizontal well section is divided through the packer and then goes into the sealed insertion pipe and the bottom-sealed pipe with the holes downwards, the secondary sealing section is formed in the partition pipe column through combination with the sealing cylinder, the sealed insertion pipe is dragged, and horizontal section selective production and segmented production finding and water exploration are conducted. The cased hole completion multi-section-fractured horizontal well selective production pipe column can be used in a multi-stage mode, the number of stages is not limited, selective production under the condition that the sleeve is slightly changed and damaged can be achieved or section-by-section production and segmented water exploration can be achieved, the phenomenon that the whole well is flooded by water can be avoided, and a good development effect is ensured.

The invention relates to a polysiloxane, glycidol and quaternary ammonium salt-containing multifunctional gelatin leather finishing agent and a preparation method. The preparation method comprises the following steps: dissolving gelatin in water to prepare aqueous solution with mass concentration of 2-20 percent; adding epoxy quaternary ammonium salt into a first reaction flask under the conditions of temperature of 40-70 DEG C and pH of 6-12 to obtain solution 1; adding glycidol into a second reaction flask to obtain solution 2; adding a surfactant into a third reaction flask, and meanwhile adding Si-O-Si repetitive unit-containing epoxypolysiloxane in batches or continuously to obtain solution 3; mixing the solution 1, the solution 2 and the solution 3 in different proportions, weighing 15-20 g of the mixed solution to be placed in a mold of polytetrafluoroethylene, adding 5-10 mL of one or three or four of ethanol, tetrahydrofuran, acetone and methanol and drying in a normal pressure drying oven at the temperature of 40-80 DEG C to obtain the multifunctional gelatin leather finishing agent. The finishing agent has the characteristics of strong hydrophobicity, flexible film, antibacterial property, high heat stability, organic solvent resistance, wet scrubbing resistance and the like.

The invention relates to a polysiloxane and glycidol-containing strong-hydrophobicity gelatin leather finishing agent and a preparation method. The preparation method comprises the following steps: dissolving gelatin in water to prepare aqueous solution with mass concentration of 2-20 percent; adding glycidol into a first reaction flask under the conditions of temperature of 40-70 DEG C and pH of 6-12 to obtain solution 1; adding a surfactant into a second reaction flask, continuously stirring, and meanwhile adding Si-O-Si repetitive unit-containing epoxypolysiloxane in batches or continuously to obtain solution 2, wherein the using amount of the surfactant is 0.5-20 percent of the mass of the gelatin; mixing the solution 1 and the solution 2 in different proportions, weighing 15-20 g of the mixed solution to be placed in a mold of polytetrafluoroethylene, adding 5-10 mL of one or two or three of ethanol, tetrahydrofuran and methanol and drying in a normal pressure drying oven at the temperature of 40-80 DEG C to obtain the gelatin leather finishing agent with a superior function. The finishing agent has the characteristics of strong hydrophobicity, super extensibility, heat resistance, oxidation resistance, wet scrubbing resistance and the like.