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917 results about "Thermal printing" patented technology

Thermal printing (or direct thermal printing) is a digital printing process which produces a printed image by selectively heating coated thermochromic paper, or thermal paper as it is commonly known, when the paper passes over the thermal print head. The coating turns black in the areas where it is heated, producing an image. Two-color direct thermal printers can print both black and an additional color (often red) by applying heat at two different temperatures.

3D printing method and system based on cold spraying

The invention discloses a 3D printing method and system based on cold spraying. High-pressure gas carrying powder granular materials needing to be printed through low-temperature preheating generates supersonic speed gas-solid bidirectional flow after passing through a scaling laval nozzle, high-speed particle flow is sprayed from the nozzle in a solid state condition, the high-speed particle flow impacts a substrate, and meanwhile the high-speed particles generate plastic deformation and are cold-welded and bonded onto the substrate; a fact matched with the process exists is that in a vacuum sealing room, a printing platform can be controlled by a computer, and stretching and contracting in the height direction and rotation around three rotating shafts are conducted according to needs; according to actual characteristics of a three-dimensional model needing to be printed, the printing section with better effects is calculated and analyzed automatically through the computer, at the time, the printing platform capable of rotating and lifting freely adjusts self-height and the needed angle to form a relative work position beneficial to an optimal printing section with the printing nozzle, meanwhile, the position of the printing platform is adjusted in real time, and the rapid and efficient printing process is achieved.
Owner:TONGJI UNIV

Thermal treatment apparatus

A temperature-setting device for providing a predetermined temperature to a quantity of fluid circulating therethrough, a thermal treatment apparatus including such device for selectively treating a targeted tissue adjacent a subject's body cavity, and techniques using such thermal treatment apparatus are provided. The temperature-setting device comprises: an electrically conducting tubular element, a housing element for receiving the tubular element; and a transformer electrically connectable to the housing element. The tubular element functions as a resistor and heats the fluid circulating therethrough. Alternatively, the housing element comprises a thermal conducting member disposed within a bath of a cooling substance, the thermal conducting member having a recess for receiving the tubular element. The tubular element may alternately be placed in a housing element functioning as a heater and a housing element functioning as a cooler, thereby alternately heating or cooling the fluid circulating therethrough. The thermal treatment apparatus comprises: a temperature-setting device according to the present invention; a catheter insertable into a subject's body cavity, the catheter including a thermal treating section for thermally treating a targeted tissue; a pump; thermal sensor assemblies; and an air trapping element.
Owner:JPMORGAN CHASE BANK AS ADMINISTATIVE AGENT

Torch for thermal spraying

The thermal spraying torch 100 is capable of successively supplying a thermal spray material 80 heated and fused by a plasma forming gas in an arc generated between electrodes contained in an outer cylinder 10, or by a combustion gas supplied passing through the outer cylinder 10 and burned under high temperature conditions. The torch can spray the thermal spray material 80 via a nozzle 40 by the plasma forming gas or the combustion gas so that droplet(s) 81 can be formed, and a rotatable discharge member 60 is contained in a forward portion of the nozzle 40 and has a droplet passage 61 for the droplet(s) 81 at the center so that the droplet(s) 81 can be jetted together with the forming gas or the combustion gas. The discharge member 60 is formed with a projection 63, which changes a discharge direction of a droplet(s) 81 at the center of the distal end portion, and is formed integrally with a plurality of arm members 65, which project from the discharge member 60 and arranged in an air jet cylinder 50 that is contained in the outer cylinder 10 at the rear end, whereby an air jet space 66 for jetting a rotation air is formed, and rotational force is given to the discharge member 60 by air jetted from an air jet port 53 of the air jet cylinder 50 arranged outside the air jet space 66. Therefore, in the thermal spraying torch 100, the rotational speed of the discharge member 60 for radially discharging the droplet 81 can be set to a range from 800 to 6,000 rpm. Further, thermal spraying is carried out with respect to the inner surface of the pipes and the cylinder 91 so that the optimum sprayed coating film 82 can be formed. A process for thermal spraying with such a device is also disclosed.
Owner:SHIMAZU KOGYO YUGENKAISHA

Method and system for automatical antifreezing and thermal insulating of tunnel lining in high and cold areas

InactiveCN102953738ARealize automatic antifreeze and heat preservationReduce operating and maintenance costsUnderground chambersTunnel liningThermal insulationLiquid state
The invention relates to a method and system for the automatical antifreezing and thermal insulating of a tunnel lining in high and cold areas. The method comprises the following steps that (1) a tunnel is provided with a surrounding rock, a primary lining, a waterproof plate, a secondary lining and a thermal preservation and thermal insulation layer sequentially from the outside to the inside; (2) a plurality of heating tubes are arranged, and refrigerant is sealed in the heating tubes; (3) the heating tubes are arranged between the secondary lining and the thermal preservation and thermal insulation layer along the length direction of the tunnel, the lower parts of the two ends of the heating tubes are buried in the surrounding rock below a tunnel pavement, so that the refrigerant is uniformly distributed on the lower parts of the two ends of the heating tubes; and the refrigerant continuously transfers heat from the surrounding rock below the pavement to the surface of the secondary lining through the circulation of ascending in a spontaneous vaporized gaseous state and descending in a condensation liquid state, and furthermore, the tunnel lining can be automatically prevented from being frozen and thermally insulated. Compared with the existing antifreezing and thermal insulating technology, the method has the advantages that the operating process does not consume any energy, the spontaneous vaporizing and condensing circulation of the refrigerant is utilized only, so that the tunnel lining can be automatically prevented from being frozen and thermally insulated; and moreover, the method is flexible in design, is convenient to construct and is low in cost.
Owner:FUZHOU UNIV

Preparation method of titanium carbide-based cermet powder material for thermal spraying

The invention provides a preparation method of a titanium carbide-based cermet powder material for thermal spraying, which belongs to the field of powder materials for thermal spraying. The method comprises the following steps of: firstly, weighting titanium powder, graphite powder/soot carbon, and other metal components in a proportion to prepare raw material powder; putting the raw material powder into a ball mill pot for ball milling, briquetting the mixture to form a block after the mixing is finished, placing in a self-propagating high-temperature synthesis reactor, igniting the block after the air in the reactor is removed so that the whole block is ignited to undergo a self-propagating reaction; starting a mechanical pump to vacuumize after the reaction is finished, and cooling reaction products to room temperature with the reactor so as to obtain a loose porous titanium carbide-based cermet block; and finally, after the cermet block is taken out, removing contaminants on the surface of the cermet block, and then crushing and screening residual products to obtain titanium carbide-based cermet powder for thermal spraying in different grain sizes. The preparation method in the invention has the characteristics of short synthesis time, energy saving, environmental protection, low price, and the like, and is suitable for industrial production.
Owner:UNIV OF SCI & TECH BEIJING

Portrait adjustment control method and apparatus suitable for preprinted paper

InactiveCN105607879ASolve the technical problem that the position of the portrait that will be printed on the preprinted paper cannot be adjusted before the official printingImprove experienceDigital output to print unitsDocumentation procedureData needs
The invention provides a portrait adjustment control method suitable for preprinted paper. The method comprises the following steps: a, obtaining preprinted paper data; b, obtaining to-be-printed document data; c, based on the preprinted paper data and the to-be-printed document data, judging whether the to-be-printed document data needs to be adjusted or not; d, if the to-be-printed document data needs to be adjusted, generating adjustment parameters based on the preprinted paper data and the to-be-printed document data; and e, performing printing based on the to-be-printed document data and the adjustment parameters. The invention furthermore provides a corresponding portrait adjustment control apparatus. According to the portrait adjustment control method and apparatus, whether the to-be-printed document data can be printed in a proper position of the preprinted paper or not is observed or identified through a preview interface or a computer identification function before formal printing, and the position of the to-be-printed document data is adjusted based on a judgment result to adjust the printing position, so that good experience is brought for a user, the working efficiency is improved, and a more environmentally-friendly printing technology is provided.
Owner:ZHUHAI PANTUM ELECTRONICS
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