117results about How to "Uniform printing" patented technology

The invention provides a lead-free silver conductive paste used for positive electrode of solar battery and a preparation technique thereof. The paste comprises the following materials by weight percentage: 65 to 85 percent of silver powder, 2 to 8 percent of lead-free glass powder, 10 to 25 percent of organic carrier and 0.1 to 3 percent of additive. The paste adopts the lead-free glass powder of Si-B-Bi-Al-Ti-Zn-O series to replace the traditional lead-bearing glass powder; and the series glass powder has lower softening point, can lead the silver electrode to have good adhesive force after sintering, and ensures the silver electrode to be well contacted with a silicon substrate. In addition, zinc resinate is used as the additive in the invention, not only can well improve the printing performance of the paste, but also can improve the electrical property of the electrode.

The invention discloses a printing relief plate, which comprises a bearing bottom plate and a plate body for printing, wherein the plate body for printing is provided with a bottom surface, and the bottom surface is contacted with the bearing bottom plate; and the plate body for printing comprises a central area and a marginal area, a first convex part is formed in the central area, a second convex part is formed in the marginal area, the first convex part is provided with a first top surface opposite to the bottom surface, the second convex part is provided with a second top surface opposite to the bottom surface, and the distance between the second top surface and the bottom surface is smaller than the distance between the first top surface and the bottom surface. According to the printing relief plate, an orientation material can be uniformly printed on a glass substrate so as to prevent a cured orientation film from generating marginal effect and forming a lug in the marginal area, enlarge the effective display area of a liquid crystal display screen and improve the display effect.

A composite structure for application to an impression cylinder or a transfer cylinder includes an ink smear preventing sheet having flexibility as a whole backed by a flexible metal thin plate. The work surface of the ink smear preventing sheet has an ink smear preventing structure in the form of a concave-convex configuration. The ink smear preventing sheet is of a flexible sheet of resin having an adhesive layer thereon in which are partially embedded many small balls to form the concave-convex structure.

A connecting material for cold transfer printing paper is provided and includes an acrylic coating agent composition as an isolating layer and an acrylic coating agent composition as an ink-receiving layer. Also provided is a method for preparing the connecting material for cold transfer printing paper, a cold transfer printing paper and a method for printing a pattern or letter on a fabric by using the cold transfer printing paper.

A hybrid development apparatus and a development method therefor are provided. The hybrid development apparatus includes a magnetic roller, a donor roller, and a collecting roller. A supply bias voltage, a development bias voltage, and a collecting bias voltage are respectively applied to the three rollers. The three bias voltages are tri-level bias voltages having same voltage duties of maximum, medium and minimum voltages and phases thereof are different by 120 degrees from each other.

The invention relates to the technical field, and specifically relates to a fingerprint module manufacturing method. The fingerprint module manufacturing method includes the steps: attaching an induction chip to a flexible printed circuit board so that a first module is formed; printing glue on the surface of the first module to form a second module; and attaching the second module to a cover plate to form a fingerprint module. During the process of the fingerprint module manufacturing method, a screen printing plate with hollow areas is introduced so that the glue is not overflowed and the glue can be uniformly printed on the induction chip when the glue is printed.

The invention discloses a double-mode printing device for solar cells, which comprises a pressure cylinder. A cylinder body of the pressure cylinder is fixed to a nut, a retractable rod of the pressure cylinder is downwards vertically disposed, and a scraper capable of realizing screen printing for electrodes of the silicon cells is arranged on the retractable rod. In a pressure printing mode, the retractable rod of the pressure cylinder can be compressed, the pressure cylinder is driven by a motor to downwards move to a specified working position, the scraper can be stopped by a printing screen when moving downwards, upward acting force is exerted on the retractable rod of the cylinder, when the acting force is higher than stretching force of the cylinder, the retractable rod of the cylinder is compressed, accordingly, when a printing tabletop is uneven, force exerted on the screen by the scraper is constant due to expansion and retraction of the retractable rod of the pressure cylinder, uniform printing is guaranteed, and the pressure printing mode is convenient to control.

The invention discloses a preparation method of an asymmetric plate ceramic nanofiltration membrane. According to the method, ceramic powder with different chemical composition and granular sizes is mixed with a water-based auxiliary, ceramic membrane slurry is prepared and printed on a plate ceramic membrane support body by a special porous emulsion roller, the support body is sintered at different temperatures, and the asymmetric plate ceramic nanofiltration membrane with different chemical composition and pore structures is formed on the surface of the support body. Density, diameter and depth of slurry adsorbing holes in the porous emulsion roller can be adjusted effectively with a laser drilling technology, so that thickness and uniformity of the ceramic membrane can be controlled precisely. The ceramic membrane with different thicknesses and surface pore size being 5-100 nm can be obtained with adoption of the porous emulsion roller with different pore density, pore diameter andpore depth. The asymmetric plate ceramic nanofiltration membrane is low in filtering resistance, high in filtering reflux, long in service life, energy-saving and environmentally friendly, and preparation cost is low.

The invention discloses a sizing agent combination which comprises, by weight, 1-3 parts of thickener, 0.5-1.5 parts of crease-resistant agent, 2-4 parts of potato oxidized starch, 0.2-0.5 part of antifoaming agent, 0.5-1 part of leveling agent and 90-95 parts of water. By means of the synergistic effect of all the constituents, the water retention capacity and viscosity of the sizing agent combination are improved, and the dyeing effect of dye-based ink is good. Fabric subjected to digital printing by means of the sizing agent combination can be colored deeper and brighter, the color design is clear, and stain bleeding is avoided. Due to the adoption of the crease-resistant agent, the crease resistance of silk and wool blended fabric is improved greatly, the finishing process conducted after the silk and wool blended fabric is printed is omitted, and energy is saved. Due to the adoption of the antifoaming agent, even sizing is achieved by means of the sizing agent combination, no foam is generated, and the printing effect is improved.

The invention discloses sodium alginate, and a preparation method and an application of sodium alginate. The preparation method of sodium alginate comprises the steps of adding sorbitol after a neutralization procedure, and performing mixing, granulation, drying and grinding to form a final product. Prepared sodium alginate has the advantages of good appearance, high rheological property and the like; a preparation technology is simple and easy to implement and popularize; a PVI (polyvinyl isobutyl ether) value of printing paste of sodium alginate is 0.65-0.73; defects such as blade streaks and mesh clogging during printing can be effectively reduced; a formula of the printing paste of sodium alginate comprises sorbitol; fixation between a dye and a fabric can be promoted; the fabric is dyed uniformly; the color yield and fastness of the printing are increased, so that the consumption of urea in the printing can be reduced; the rheological property of sodium alginate can also be improved; the generation of the printing defects is reduced; the printing of the fabric is uniform; a color is bright; and a pattern is clear.

The invention discloses an active digital printing paste composition and a preparation method thereof. The active digital printing paste comprises the following components: 1-25% by weight of guar hydroxypropyltrimethylammonium chloride, 5-20% by weight of hydroxypropyl guar, 1-15% by weight of hydroxyethyl cellulose, 5-20% by weight of hydroxypropyl methylcellulose, 1-8% by weight of monoglyceride succinate, 1-8% by weight of hydroxysultaine, 0.1-1.5% by weight of alkali metal carbonate and 30-70% by weight of anhydrous alkali metal strong acid salt, based on the total weight of active digital printing paste. The active digital printing paste composition has the characteristics of high color yield, soft hand feeling, uniform printing, high definition and the like, and has excellent comprehensive performance of active digital printing.

The invention relates to a precise positioning type daily-use ceramic non-deviation automatic printing equipment, comprising a supporting device, four printing devices and a rotating device, the rotating device is installed on the supporting device, and the four printing devices are symmetrically installed on the rotating device The supporting device includes a supporting top plate, four supporting columns, a supporting chute, five lifting electric push rods, a lifting frame and two supporting sliding rods, and the four supporting columns are symmetrically installed on the lower end surface of the supporting top plate, each A support chute is installed on the inner side of each support column. The present invention can solve the existing problems of low work efficiency, high labor intensity, uneven printing, deviation of printing position, and the need to prepare various printing plates in the existing manual printing of ceramics; it realizes precise positioning of ceramics of different shapes, rapid The printing function has the advantages of high work efficiency, low labor intensity, mechanized uniform printing, precise positioning of printing through positioning blocks, automatic rotation and switching of printing plates, etc.

The invention relates to the technical field of display, in particular to a printing relief block. The printing relief block comprises a plurality of valid printing areas which are arranged on the printing relief block, wherein an invalid printing area is arranged between every two adjacent valid printing areas; a pattern of a printing body in each valid printing area is quadrangular; a bump which extends outwards is arranged at each of the four top corners of the quadrangular printing body; a plurality of bump units are uniformly distributed on the printing body and bumps. According to the printing relief block provided by the invention, the bump which extends outwards is additionally arranged at each of the four top corners of the quadrangular printing body of an effective display area, an orienting material can be uniformly printed on a glass substrate, the phenomenon that poor corner displaying is caused due to the fact that an oriented film is baffled at a corner position by a metal circuit and cannot be diffused is avoided, and display quality is improved.

It is an object to obtain a cathode ray tube having a high resolution without decreasing electron emission property. Surface of a cathode was leveled by heating during forming a vacuum in order to oxidize a carbonate salt to an oxide as an electron emissive material, after applying a paste for printing on a metal substrate by screen printing, drying the same, and incorporating an oxide cathode in a cathode ray tube, the paste having a mixture of needle-like particles of the first group and bulk particles of the second group incorporated as an alkaline earth metal carbonate forming an electron emissive material layer.

The invention relates to a portable manual curved-surface screen printing machine, and belongs to the technical field of printing. The portable manual curved-surface screen printing machine mainly comprises a machine frame, a top frame, a rectangular frame, a screen printing plate and a scraping plate, wherein the top frame is located at the top of the machine frame and is in a U shape, and the two end points of a U-shaped opening are connected to a rotary shaft at the top end of the machine frame so that the U-shaped top frame can rotate around the rotary shaft; sliding guide rails are symmetrically mounted on the two sides of the U-shaped top frame, the rectangular frame is mounted in the sliding guide rails, and the rectangular frame can slide in the U-shaped top frame freely; the screen printing plate is fixed in the rectangular frame through fasteners; the two sides of a cross beam on the lower portion of the machine frame are each symmetrically provided with two bearings used for storing an article to be printed, and the article to be printed can rotate freely under the effect of friction force of the screen printing plate; and a positioning pointer is mounted on one supporting rod of the machine frame and points to the feature point of the article to be printed, and thus the initial printing position of the article to be printed is marked. The portable manual curved-surface screen printing machine is simple in structure, operation is flexible and convenient, the printing quality is good, the article to be printed can be printed and repaired on the using field, and batched printing can also be performed.

The invention belongs to the technical field of cloth printing devices, and particularly relates to an automatic cloth printing device with spraying devices. The automatic cloth printing device comprises a pedestal, a stand column arranged on the pedestal and a cross beam arranged on the stand column, wherein the stand column is connected with the pedestal in a lifting adjusting mode through a second pneumatic device, the cross beam is connected with the stand column in a lifting adjusting mode, a connecting base is arranged on the pedestal, a lower support is arranged on the connecting base, a plurality of lower moving rollers are fixed on the lower support, the cross beam is provided with an upper support, a plurality of upper moving rollers and the plurality of spraying devices are fixed on the upper support, the upper support corresponds to the lower support, the spraying devices are funnel-shaped, the upper end of each spraying device is connected with a rotary spraying device capable of rotating by 360 degrees along the inner wall of the upper support, and the lower end of each spraying device is provided with flow guide holes and mounting holes. Cloth printing, straightening and cleaning are integrated in the automatic cloth printing device with the spraying devices, the whole process is automatic, the printing effect is good, the efficiency is high, and the technical benefits are remarkable.

The invention discloses a glass printing technology which includes the following steps: firstly, cleaning a piece of glass; then drying the cleaned glass; then fixing the dried glass on a fixture; then scouring the surface, to be subjected to printing treatment, of the glass on the fixture through a pneumatic nozzle; finally performing printing treatment on the scoured glass. According to the invention, the technical effects that the glass printing technology is reasonably designed, the rejection rate of printed products is lower, the production efficiency is higher and the production cost is reduced are realized.

The invention discloses a preparation method of a chip oxygen sensor and the chip oxygen sensor prepared by the method. The preparation method comprises the following steps: preparing a ceramic substrate sintered into a dense body to serve as a support body; sequentially printing a first insulating layer and drying the printed first insulating layer at one side of the ceramic substrate through a thick film printing mode, printing a heating electrode and drying the printed heating electrode and printing a second insulating layer and drying the printed second insulating layer at the other side of the ceramic substrate or on the second insulating layer through the thick film printing mode; sequentially printing a third insulating layer and drying the printed third insulating layer, printing afirst porous platinum electrode and drying the printed first porous platinum electrode, printing a reference layer and drying the printed reference layer, printing a second porous platinum electrodeand drying the printed second porous platinum electrode and printing a porous protection layer and drying the printed porous protection layer; and sintering the printed ceramic substrate at high temperature so as to be molded. The chip oxygen sensor disclosed by the invention has no need of being thermally pressed and is simple in process, less in deformation and cracks and high in finished product yield.

The invention relates to the technical field of printing, and discloses an automatic loading and drying printing device for shoe upper fabric production. The device comprises a machine body, a feedingroller, an adjusting wheel and a dye box are arranged in the machine body, the front face of the adjusting wheel is fixedly connected with a connecting shaft, the end, away from the adjusting wheel,of the connecting shaft is fixedly connected with a fixed wheel, the outer portion of a connecting block is fixedly connected with an adjusting rod, a rotating wheel is movably mounted at the position, blow the adjusting wheel, in the machine body, a stirring shaft is arranged in the dye box, and a conveying pipe is fixedly mounted below the dye box. According to the automatic loading and drying printing device for shoe upper fabric production, a convex block and an adjusting block are arranged on the rotating wheel, a clamping opening is formed in the adjusting wheel, a power source drives the rotating wheel to rotate, the rotating wheel rotates, the adjusting wheel is driven to rotate through the adjusting block, indirect rotation of the adjusting wheel is achieved, the product can be better printed, and stable running of the device is ensured.