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350results about How to "Good quality" patented technology

Image forming apparatus

InactiveUS20070188589A1good qualitycolor correction
An image forming apparatus is provided with a light scanning device that directs laser beams emitted from a plurality of laser light sources onto a plurality of photo conductive members via focusing device which includes optical elements and a deflecting device that deflects the beams in a main scanning direction; an image forming device which forms visible images of different colors from images written onto the photoconductive members by the light scanning device; and an intermediate transfer member or a recording sheet transport member capable of carrying the visible images formed on the photoconductive members. When in detection mode, a control device controls the correction of color registration errors between each color forms patterns on an intermediate belt by means of the image forming device, detects the patterns by a color registration error detection sensor, and stores the color registration error correction values obtained from the detection output of the sensor in a memory device. When forming images, the control device reads the color registration error correction values stored in the memory device, and carries out correction in accordance with the correction values via a writing start position correction device which deflects the laser position in the sub scanning direction. Alternatively, when in detection mode, the control device controls the correction of color registration errors between each color forms color registration error detection patterns on a transfer member belt, sets the scan line from among the plurality of scan lines obtained by a pattern detection sensor for the color that passes through the lens that is most distant from the polygon mirror, as the standard scan line, and stores data for the standard scan line and bending correction values for the scan lines of other colors with respect to the standard scan line in the memory device. When forming images, the control device reads the data for the most distant standard scan line and the bending correction values for the scan lines of the other colors stored in the memory device, and carries out correction so that the laser irradiation position coincides with the standard scan line in accordance with the correction values via the sub scan deflecting element.
Owner:RICOH KK

Simple and new technology for extracting and purifying arteannuin and artemisinic acid from southernwood through single process

InactiveCN103087075AHigh recovery rateGood quality
The invention relates to a technology for extracting, separating and purifying arteannuin and artemisinic acid from southernwood through a single process. The technology comprises the following steps of: extracting for 4 hours at room temperature twice by adopting a solvent, wherein the volume-mass ratio of the solvent to a material is 4-6; extracting at room temperature for 4 hours twice, wherein extracting solution is repeatedly used when being extracted for the third time; concentrating an obtained extracting solution into liquid extract, then dispersing through organic solvents, such as petroleum ether, and processing and extracting through a sodium bicarbonate solution; concentrating and crystallizing organic phases to obtain a part of crude arteannuin products, and carrying out gradient elution on a crystallizing mother solution through a mixed solvent; concentrating to obtain other arteannuin, and merging to obtain qualified pure arteannuin products through ethanol recrystallization; regulating the pH value of a water phase part obtained from the last step through acid water to 6-7; and extracting through the solvents, such as the petroleum ether, and concentrating, drying, crystallizing and recrystallizing to obtain pure artemisinic acid products. The process disclosed by the invention has the advantages of simple and high-efficiency process flow, high recovery rate, high product content and purity and high operation feasibility, and is suitable for mass production.
Owner:ZHANG JIA GANG VINSCE BIO PHARM

Winter jujube planting method

InactiveCN105993783Agood qualityScientific and reasonable setting
The invention provides a winter jujube planting method. The winter jujube planting method comprises the steps that land preparation is performed: land flat in terrain, convenient to irrigate, good in drainage, fertile in soil and loose in nature is selected for deep ploughing, and field planting furrows are dug according to line spacing; fertilizing is performed: organic fertilizer and loess are evenly mixed and backfilled to the field planting furrows, and leveling is performed; nursery stocks are selected: grafted seedlings with the stem thickness of more than 1 cm and the height of more than 0.7 m are selected as the nursery stocks; field planting is performed: field planting is performed from leaf falling in autumn to germination in a next year; seedling management is performed: young seedlings undergo watering in good time, fertilizer application, intertillage and disease and pest prevention and control within two years after the field planting is completed; reshaping and pruning are performed: resting-stage pruning is performed from leaf falling to sap flowing, wherein cuts are formed in the positions 0.5 cm higher than buds; fruit tree growing environment management is performed: artificial low-temperature dark-light dormancy promotion, mulching film coverage, temperature rise, ventilation and temperature and humidity control are adopted in the fruit tree growth process to manage a fruit tree growth environment. The winter jujube planting method is reasonable in design and achieves abundant winter jujube production in regions where are not suitable for cultivation by controlling temperature and cold needs.
Owner:泾阳佳沃农业有限公司
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