118results about How to "Improve printing stability" patented technology

The invention relates to water-based heat transfer printing ink and a preparation method thereof, and aims to provide the water-based ink and the preparation method thereof which can effectively solve the problems in stability, drying speed and color brightness to replace solvent printing ink. The technical scheme is that the water-based heat transfer printing ink consists of the following raw materials: deionized water, a disperse dye, a dispersant, a wetting agent, a thickening agent, a cosolvent, an anticorrosive agent, a defoaming agent and a drier. The preparation method for the water-based heat transfer printing ink comprises the following steps of: 1, dissolving the dispersant in water, adding the thickening agent, the wetting agent and the defoaming agent, adding the disperse dye, and stirring and mixing uniformly; 2, grinding and refining the mixed solution obtained from the step 1 to form a pre-disperse solution; and 3, adding the cosolvent, the anticorrosive agent and the drier into the obtained pre-disperse solution, stirring and mixing uniformly, and obtaining a final product by adjusting.

An ink composition comprising: a betaine-based surfactant represented by the following general formula (1), a defoaming agent in the form of a glycol ether represented by the following general formula (2), and/or a glycol ether represented by the following general formula (3):

(R)_p—N-[L-(COOM)_q]_r   Formula (1)

(wherein, R represents a hydrogen atom, alkyl group, aryl group or heterocyclic group, L represents a divalent or more linking group, M represents a hydrogen atom, alkaline metal atom, ammonium group, protonated organic amino or nitrogen-containing heterocyclic group or quaternary ammonium ion group, or represents a group that does not exist as a cation in the case of being a counter ion of an ammonium ion formed by an N atom in formula (1), q represents an integer of 1 or more, r represents an integer of 1 to 4, p represents an integer of 0 to 4, p+r is 3 or 4, N is a nitrogen atom that composes a quaternary amine in the case p+r is 4, R may be the same or different when p is 2 or more, COOM may be the same or different when q is 2 or more, and L-(COOM)_q may be the same or different when r is 2 or more);

(wherein, R represents an alkyl group having 5 or 6 carbon atoms, and n represents an integer of 1 to 3);

(wherein, R represents an alkyl group having 4 to 6 carbon atoms, and n represents an integer of 1 to 3).

Each halftone dot is randomly placed, and the halftone dot area rate at which half of the halftone dots join with their adjacent halftone dots in an image area having a uniform image density is set to a value larger than 50%. When each halftone dot joins with its adjacent halftone dots, a plurality of joining points at which the halftone dot joins with-its adjacent halftone dots do not simultaneously start to join with the adjacent halftone dots.

The object of the present invention is to provide an ink for ink jet printers which is improved in dispersion stability. The ink is one containing a pigment and an organic solvent where a silicone graft polymer is contained in the ink and is dispersed in the organic solvent in the form of particles having a particle diameter of 0.01-0.3 μm in such a state as the silicone graft polymer being adsorbed to at least a part of the outer surface of the pigment. The pigment is an organic pigment and/or carbon black.

The invention relates to a digital-printing active ink suitable for a wide-width micro-piezoelectric printer. The digital-printing active ink is characterized in that an ink formula system contains the following ingredients by weight percent: 5-15wt%of active dye, 5-40% of humectant, 1-10wt% of viscosity regulator, 0.1-1wt% of bactericide, 0-1wt% of pH buffering agent, 0-5% of surfactant, 0-2% of dispersing agent, 0-10% of cosolvent and the balance of deionized water. The digital-printing active ink disclosed by the invention has the characteristics that the performance parameter can favorably adapt to the wide-width micro-piezoelectric printer, and has good printing stability on the type of printer; the digital-printing active ink has good reaction activity and excellent fixation performance on fabric such as cotton, hemp, hair and silk, and has good washing fastness, good perspiration fastness, good friction fastness and good light fastness on the fabric; the digital-printing active ink is wide in color range and excellent in color expressive force; and through a strict high/low temperature ageing experiment, the digital-printing active ink is good in storage stability.

There is provided a clear ink composition containing a water-insoluble alkanediol having at least seven carbon atoms, a water-soluble alcohol that functions as a dissolution aid for dissolving the water-insoluble alkanediol, water, a fine polymer particle at least containing polyolefin, and a fluorene resin. A colorant is not used.

There is provided an ink composition which has excellent initial filling characteristics and continuous printing stability even in a case of an ink composition (for example, dissolved nitrogen is equal to or greater than 5 ppm) which is almost not deaerated or an ink composition (for example, dissolved nitrogen is equal to or greater than 7 ppm) which is not deaerated at all.

The ink composition includes an alkylene oxide adduct (A) of acetylenic glycol in which a main chain has 12 or more carbon atoms, acetylenic glycol (B) in which a main chain has 10 or more carbon atoms, and polyoxyalkylene alkyl ether (C).

The invention discloses a 3D printing system based on Joule heat and used for a thermoplastic alloy. A wire feeding device and a hot rolling wheel are oppositely fixed in position; a wire feeding portof the wire feeding device is located in one side of the hot rolling wheel; the hot rolling wheel and a forming base plate are connected to a negative pole and a positive pole of a Joule heat power supply separately; the wire feeding device and the forming base plate are capable of relatively moving; printing wires are conveyed to the forming base plate by virtue of the wire feeding device, and then the wires to be printed are tightly pressed onto the forming base plate through the hot rolling wheel; the hot rolling wheel and the forming base plate form a loop; and the conductive wires are instantaneously softened at the contact ends of the hot rolling wheel and the forming base plate. The device is simple in structure, capable of realizing high-utilization-rate, high-quality, low-cost, green and environment-friendly additive manufacturing for metal parts, and is metal additive manufacturing method integrating materials, machinery, measurement and control technology, and information processing; and moreover, high compactness in a formed sample piece is realized through rolling at the moment of melting the wires to be printed by the hot rolling wheel.

An ink composition comprising: a betaine-based surfactant represented by the following general formula (1) and a linear saturated aliphatic alcohol having a hydroxyl value of 1 to 2 and 4 to 6 carbon atoms: [C 1]

(R)_p—N-[L-(COOM)_q]_r  Formula (1)

(wherein, R represents a hydrogen atom, alkyl group, aryl group or heterocyclic group, L represents a divalent or more linking group, M represents a hydrogen atom, alkaline metal atom, ammonium group, protonated organic amine or nitrogen-containing heterocyclic group or quaternary ammonium ion group, or represents a group that does not exist as a cation in the case of being a counter ion of an ammonium ion formed of an N atom in formula (1), q represents an integer of 1 or more, r represents an integer of 1 to 4, p represents an integer of 0 to 4, p+r is 3 or 4, N is a nitrogen atom that composes a quaternary amine in the case p+r is 4, R may be the same or different when p is 2 or more, COOM may be the same or different when q is 2 or more, and L-(COOM)_q may be the same or different when r is 2 or more).

The invention discloses a non-contact screen printing method and non-contact screen printing equipment. The non-contact screen printing equipment comprises: a printing table of which the table top can be used for placing a printed object; a screen printing plate which is arranged between the printing table and a printing scraper and is used for printing ink on the printed object through the screen printing plate; and a printing head mechanism used for synchronously driving at least one printing scraper to move through the up and down movement of at least one driving device and pressing the printing scraper against the screen printing plate under the action of a constant pressure. The printing scraper prints at a constant pressure under the condition that the screen printing plate does not contact the printed object; and to a fragile, light and thin printed object such as a silicon chip, the method and the device can accurately control the thickness and uniformity of the printing ink so as to improve the printing stability and realize accurate printing.

Incorporating a combination of phenolic reducing agents provides thermally developable materials with improved silver efficiency and hot-dark print stability without loss in other sensitometric properties. Both photothermographic and thermographic materials are provided, and particularly photothermographic materials having lower silver coverage.

The present invention relates to a pigment ink composition that can fulfill excellent print stability, and performances and drying performance of printed matters.

The ink composition comprises: at least a pigment; an organic solvent; and two or more kinds of binder resins having different weight average molecular weights (Mw), wherein, when a binder resin having lowest weight average molecular weight (Mw) is marked as α, and a binder resin having higher weight average molecular weight (Mw) than that of the binder resin α and meeting formula (3) is marked as β among the two or more kinds of binder resins to be used, the ink composition meets formulae (1) and (2): Formula (1): Mwβ−Mwα≧10,000, Formula (2): 1,000<Mwα<30,000, and Formula (3): 20,000<Mwβ<100,000, wherein Mwα represents the weight average molecular weight of the binder resin α, and Mwβ represents the weight average molecular weight of the binder resin β.

A method for carrying out a printing correction and a device for this. A method for carrying out a printing correction is provided, a product being printed on during a processing procedure by a plurality of processing devices, positions of two printing marks A,B,C,D being recorded. The positions of the printing marks A,B,C,D are evaluated and an automated correction of the print is carried out in the light of the positions of the printing marks A,B,C,D, the correcting including a correcting of a printing length. Furthermore, an apparatus is provided for carrying out the method.

The invention discloses a special jet ink for PVC (polyvinyl chloride) cables, which consists of the following components by weight portions: 60-90 portions of organic solvent mixture, 5-12 portions of binder resin, 1-10 portions of colorant, 0.1-2.0 portions of plasticizer, 0.1-2.0 portions of adhesion promoter, 0.1-2.0 portions of surfactant, 0.2-5.0 portions of dispersing agent and 0.1-2.0 portions of conductance agent. The special jet ink for PVC cables disclosed by the invention is suitable for PVC substrate printing and has small particle size and good sprayability. The jet ink can quickly dry on the surface of the PVC substrate, having the advantages of stain resistance, scratch resistance, strong adhesion and good printing quality, printing stability, ink dryness and storage stability. The jet ink does not block the nozzle during printing and has good adhesion to PVC cables and good durability.

The invention discloses a 3D printer suitable for five-axis printing, including the addition of two degrees of freedom A and B, which are realized through the design of the printing platform. When the motor drives the synchronous belt to move the XYZ axis of the printer and print with the nozzle , the printing platform rotates at the same time, so that the printing surface is always kept horizontal, including two motors controlling the XY transmission at the same time. Its principle is that the movement of the XY axis is controlled by two motors at the same time. Move, move to the Y axis when the two motors are reversed. The invention enables the 3D printer to rotate the coordinate system at all times during printing so that the forming surface is always on a supported horizontal plane, thus avoiding the generation of supporting materials, reducing printing time and materials, and simultaneously controlling the XY axes by dual motors to improve printing stability.

A solvent-based ink jet ink composition includes a coloring material; and a solvent; in which the composition includes, as the solvent, two or more types of solvent that are compounds represented by the following general formula (1), and R¹, R², and R³ have the same structure as one another and m are consecutive integers, in the solvent.

R¹O—(R²O)_m—R³  (1)

(in the formula, R¹ is a hydrogen atom or an alkyl group with 1 to 6 carbon atoms, R² is an alkylene group with 2 or 3 carbon atoms, and R³ is a hydrogen atom, an acetyl group, or an alkyl group with 1 to 4 carbon atoms. However, both of R¹ and R³ are not hydrogen atoms. m is an integer of 1 to 7).

The invention discloses water-based golden ink produced by using ordinary bronze powder. The ink is prepared from the following raw materials in parts by weight: 30-55 parts of pre-prepared resin liquid, 0-10 parts of water-based color paste, 10-60 parts of pre-prepared gold paste, 0-5 parts of anti-scraping agent, 0.1-1 part of water-based defoaming agent, 0.2-2 parts of water-based lubricant, 1-10 parts of water and 1-30 parts of alcohol solvent. The preparation method comprises steps of preparing the pre-prepared resin liquid, preparing the pre-prepared gold paste, mixing, dispersing and tempering. The effects of imported water-based golden ink can be achieved by using ordinary bronze powder produced in China, and the ink is low in price, stable in material resource, good in metal effect and good in storage stability.

The present invention relates to a reactive printing dye composition, which includes: (a) at least one reactive dye; (b) an organic buffer; and (c) a mirabilite or a dispersant. The reactive printing dye composition of the present invention is capable for being used in the fabric-dyeing, for example, dyeing of cotton, hemp, silk, rayon, wool, blending, etc. The reactive printing dye composition of the present invention is advantageous in high pH value stability, high storage stability, and reduced degradation in dyeing strength. In addition, the present invention further provides an aqueous reactive printing dye composition.

The invention discloses traceable paper cups and bowls and a preparation method thereof. The paper cups and bowls are provided with tracing identifiers, and tracing information is bound to the tracing identifiers for tracing display in later period. The preparation method of the traceable paper cups and bowls comprises a first mode, wherein before and after the paper cutting process or during the paper cutting process through a die-cutting machine, each piece of paper is printed with a tracing identifier, and the tracing identifiers and tracing information carried by the tracing identifiers are stored in an information system; a second mode, wherein traceable identifier printing equipment is additionally installed at a reel feed inlet in the bottom of molding equipment, after fan-shaped paper pieces and bottom reel paper are put into the feed inlet of the molding equipment, the tracing identifiers are printed at the bottoms of the products through the tracing identifier printing equipment, and meanwhile the tracing identifiers and the tracing information carried by the tracing identifiers are stored in the information system. According to the traceable paper cups and bowls and the preparation method thereof, application of a 'one object, one code' tracing mode in low-value single-item products of disposable paper cups and bowls is created for the first time, and food packaging safety and quality improvement can be greatly promoted.