203results about How to "Stable printing" patented technology

This invention provides a metallic pigment, which can prepare a printed matter having metallic luster, can realize stable printing even in a printer with ink jet nozzles having a nozzle diameter of not more than 30 μm, can eliminate the need to carry out heat treatment and the like, and, thus, can realize ink jet recording without undergoing a limitation on printing media (recording media), an ink composition, and an ink jet recording method. The metallic pigment is a metal foil piece having an average thickness of 30 to 100 μm, having a 50% average particle diameter of not less than 0.5 μm and not more than 4.0 μm, and having such a particle size distribution that the maximum particle diameter is not more than 12 μm. An ink composition containing this metallic pigment and an ink jet head having a nozzle diameter of not more than 30 μm are provided, and the ratio between the average particle diameter of the metallic pigment and the nozzle diameter of the ink jet head (average particle diameter/nozzle diameter) is preferably brought to not more than 0.15.

The invention discloses an electric field driving jetting deposition 3D printing device and a working method thereof. The limits of the aspects, such as printing materials, receiving substrates, the resolution, of existing material jetting deposition 3D printing are broken through, especially the multiple-spraying-head technology is combined, and multi-scale multi-material structure integration 3D printing can be realized. According to the technical scheme of the electric field driving jetting deposition 3D printing device, a two-dimensional worktable is included and provided with a printing platform; a receiving substrate is arranged on the printing platform in an adsorbed mode; a jetting unit is arranged on the upper portion of the receiving substrate correspondingly; the jetting unit is connected with a Z-direction worktable and comprises an electric field generating electrode and a printing spraying head; the printing spraying head is arranged in an electric field area formed by the electric field generating electrode; the electric field generating electrode is connected with a positive pole of a high-voltage pulsed power supply; the printing spraying head comprises a nozzle and a storage cylinder which are mutually connected; and the storage cylinder is connected with a back pressure control unit and a printing material supply unit.

The invention relates to a thermoplastic polyurethane modified composite material for FDM (frequency division multiplexing) 3D printing and a preparation method thereof. The composite material is prepared from the following components in parts by weight: 70-95 parts of thermoplastic polyurethane, 1-5 parts of antioxidant, 1-5 parts of hydrolysis-resistant stabilizer, 1-5 parts of compatilizer, 1-5 parts of lubricant and 1-10 parts of other assistant. Compared with the prior art, the antioxidant, hydrolysis-resistant stabilizer, lubricant and other assistants are added, so that the modified composite material has the advantages of favorable mechanical properties, high elasticity, favorable wear resistance, higher heat stability, hydrolysis resistance, higher oxidation resistance and higher processability. When being used for FDM 3D printing, the thermoplastic polyurethane modified composite material has the characteristics of smooth printing process, no odor, smooth printing product surface, beautiful appearance, stable size, low tendency to shrinkage, favorable mechanical properties, high flexibility, high heat stability, high hydrolysis resistance, high oxidation resistance and high processability.

This invention relates to a printing apparatus and printing method which can stably print at high image quality on print media of various sizes by using a full-line printhead. The printing method uses a full-line printhead which has a long printing width and is configured by arraying a plurality of substrates each prepared by arraying a plurality of printing elements and each having a given printing width. When printing is done by conveying a print medium in a direction different from the array direction of the printing elements having the long printing width, printing elements used for printing are selected in accordance with an input image printing width so that an area printed on the print medium by printing elements corresponding to the connected portions between the substrates becomes a visually least perceivable area on the print medium. The relative moving amount of the full-line printhead to the print medium is so determined as to print by using the selected printing elements. The relative position of the full-line printhead is moved by the determined relative moving amount, and printing is done using the selected printing elements at the position after movement.

A high speed electrostatic printing machine has a toner supply to supply to a supply roller (13) a high viscosity highly concentrated toner; a pick-up roller (16) which is spaced from the supply roller by a first feed gap; a metering roller (21) which receives a thin layer of the toner from the pick-up roller; a doctor blade (23) bearing against the metering roller which bears against a development member (31) with an interference fit (32) to transfer a thin layer of the toner onto the development member; an image forming stage (40), the image forming stage comprising an image carrying member (41) having a surface adapted to retain an electrostatic latent image thereon with the development member engaging against the image carrying member with an interference fit (46) to give a selected contact time therebetween; a development stage in which toner particles in the thin layer on the development member are transferred to the image carrying member under the influence of the electrostatic latent image on the image carrying member to provide a developed image thereon; and a transfer stage (50) in which the developed image is transferred from the image carrying member onto a substrate (61), or a further member, such as an intermediate member (5). A carrier liquid displacement device (33) acts upon the thin layer of toner on the development member (31) to push toner particles in the thin layer towards the surface of the roller and to leave a carrier liquid rich layer on the outside of the thin toner layer.

A print head carriage for holding a print head in a printing system includes a print head carriage framework having a plurality of print head positioning references for defining a position of the print head onto the print head carriage framework, and a cooling channel in thermal contact with the print head carriage framework for controlling the temperature of the print head carriage framework such that the positional stability of the plurality of print head positioning references on the print head carriage framework is preserved.

This invention provides a metallic pigment, which can prepare a printed matter having metallic luster, can realize stable printing even in a printer with ink jet nozzles having a nozzle diameter of not more than 30 [mu]m, can eliminate the need to carry out heat treatment and the like, and, thus, can realize ink jet recording without undergoing a limitation on printing media (recording media), an ink composition, and an ink jet recording method. The metallic pigment is a metal foil piece having an average thickness of 30 to 100 nm, having a 50% average particle diameter of not less than 0.5 [mu]m and not more than 4.0 [mu]m, and having such a particle size distribution that the maximum particle diameter is not more than 12 [mu]m. An ink composition containing this metallic pigment and an ink jet head having a nozzle diameter of not more than 30 [mu]m are provided, and the ratio between the average particle diameter of the metallic pigment and the nozzle diameter of the ink jet head (average particle diameter/nozzle diameter) is preferably brought to not more than 0.15.

The invention discloses a printing quality evaluation and process control method. The method comprises enterprise production standard establishment and printing process control, is based on the international standard, the national standard or industry standard of the printing industry and the SPC (statistical process control) advanced quality control technology instead of powerful software and hardware process, uses the principle of statistics, and helps an enterprise to establish own production data and enterprise quality standard, so that process control for production of printed matters is performed on the basis that printing is stable and the printed matters meet standard specification, and printing standardization is realized.

The invention discloses a preparation method of an ultra-fine and large-height-width-ratio grid transparent electrode, and belongs to the technical field of additive manufacturing and electronic devices. According to the preparation method of the super-fine and large-height-width-ratio grid transparent electrode, an electric field is used for driving the jet 3D printing and the charge-induced self-aligning to be combined. In one pulse period of the alternating-current pulse power supply, positive-voltage induction generates printing material micro-droplets with positive charges, the negative voltage induction generates the printing material micro-droplets with negative charges, after being deposited on the substrate, the micro-droplets of the charged printing material are in contact with each other, the positive and negative charges are neutralized, and then the charge-induced self-aligning is utilized to realize the accumulation of the charged printing material micro-droplets on the formed layer, and printing of the grid with the set number of layers is completed. The preparation method of the ultra-fine, large and high-width-ratio grid transparent electrode is wide in applicationrange, can obtain the high-conductivity and high-light-transmittance transparent electrode, and high-light-transmittance transparent electrode, and has good popularization and application values.

A 3D printing supporting structure design method based on an STL file comprises the following steps that 3D modeling software is used for conducting three-dimensional modeling on a model, the STL fileis exported, the STL file is read, triangular patch vertex and normal vector information in the STL file is read, a critical angle is defined, the read triangular patch information is integrated, a to-be-supported area is projected to a working plane to form a two-dimensional projection area to obtain a part needing to be supported, sampling point sampling is carried out to generate a supportingstructure, and all vertex coordinates and normal vector coordinates are written into an STL file. Compared with the prior art, the problems that a traditional supporting structure is excessive in useamount, materials are wasted, the supporting structure is difficult to remove, and a to-be-supported area of a sharp-angled model including a suspension edge, a suspension point and the like cannot bedetected are solved, by means of the 3D printing supporting structure design method based on the STL file, the calculation efficiency is improved on the premise of guaranteeing that the model is tender and is consolidated and stably printed, the printing cost is saved, and the supporting structure is easier to remove.

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.

An object of this invention is to provide a driving circuit layout which suppresses an increase in the area of a head substrate in an inkjet printhead adopting a driving method for supplying a predetermined current to a heater. To achieve this object, a plurality of printing elements and a plurality of switching elements which are very large in number are arrayed in the longitudinal direction of a head substrate. A plurality of terminals which receive a driving signal and a control signal that are used to drive the plurality of printing elements are arranged at the end of the board in the longitudinal direction of the board at positions opposite to the array of the plurality of printing elements. A constant electric current source for supplying a predetermined electric current is interposed between these two regions.

The invention belongs to the technical field of printing and packaging devices, and particularly relates to a processing method and integrated processing device for a hard shell cigarette packaging box. The processing method comprises the following steps that white cardboard rolls are uncoiled, gilded and printed to form semi-finished paperboards; the paperboard are dried; the pressing mark technology is carried out on the semi-finished paperboards to form a plurality of folding marks; die cutting is carried out on the semi-finished paperboards to form packaging paper; the packaging paper is folded and stuck to form the square and strips-shaped hard shell cigarette packaging box. The integrated processing device comprises a rack, an uncoiling mechanism, a gilding film paying-off device, a gilding mechanism, a printing mechanism, a waste film taking-up mechanism, a drying device, a pressing mark mechanism and a die cutting mechanism which are sequentially arranged on the rack. The gilding mechanism comprises an upper gilding and printing film and a gilding bearing base. A heating disc and a temperature sensor are arranged on the upper gilding and printing film. According to the processing method and device, the cigarette packaging and printing quality is better ensured, the production efficiency is high, and the production cost is saved.

The invention discloses a carton printing device capable of automatically adding ink at regular time. The carton printing device comprises a casing, wherein a working cavity is formed in the casing, atransmission assembly is arranged on an inner wall of the rear side of the working cavity, and a printing assembly is arranged on the inner wall of the rear side of the working cavity. With the adoption of an ink adding assembly, when a second sector gear is in meshed connection with a valve gear, orientation of a valve through hole is changed, so that an inlet pipeline communicates with a rubberpipeline, ink is supplemented for the printing device at regular time through the inlet pipeline, the valve through hole and the rubber pipeline, an appropriate amount of ink exists in the printing device all the time, and clearness of fonts or patterns during printing is guaranteed; with the adoption of a first sector gear, when the first sector gear is in meshed connection with a second gear, the printing assembly is driven to print a to-be-printed carton, and when the first sector gear is in meshed connection with a first gear, the transmission assembly is driven to convey the carton, andstable and orderly carton printing is guaranteed.

The invention discloses a dual-station desk-top flat-bed screen printing machine which comprises a stand, printing machine head assemblies and printing table tops and is characterized in that two sets of the printing machine head assemblies are arranged at the left end and the right end on the stand respectively; two printing table tops face upwards and are arranged on the stand in parallel on the left and right; a translation driving device acts on the two printing table tops to drive the two printing table tops to translate left and right synchronously so that the two printing table tops have a left station and a right station; when the two printing table tops are located on the left station, the printing table top on the left side and the printing machine head assembly on the left side are vertically opposite, and the printing table top on the right side is located on a gap position between the two printing machine head assemblies; and when the two printing table tops are located on the right station, the printing table top on the right side and the printing machine head assembly on the right side are vertically opposite, and the printing table top on the left side is located on a gap position between the two printing machine head assemblies. When the dual-station desk-top flat-bed screen printing machine works, the left and right printing machine head assemblies work alternatively, and compared with the traditional screen printing machine, the printing efficiency of the dual-station desk-top flat-bed screen printing machine is improved by about 50%.

A printer has a platen which vertically moves with respect to a printing head to press a medium against a guide member from below. In this printer, the platen is attached to a support member through a spring member to be urged upward by the spring member, and the arrangement is such that when the thickness of the medium is more than a predetermined value, the platen is further urged upward by a spring force reinforcing mechanism, whereby the force with which the platen presses the medium can be suitably controlled according to the thickness of the medium, so that printing can be performed in a stabilized manner.

The invention relates to a processing process of APET plastic products, in particular to a printing and forming process of environment-friendly APET plastic products. The printing process comprises the following steps:1) making an APET plastic plate; 2) embossing a leading wire on the APET plastic plate and laminating a film on the APET plastic plate; 3) cutting the APET plastic plate; 4) carrying out silk-screen printing; 5) coating the APET plastic plate with a protective film layer; 6) pressing sides; 7) carrying out die-cutting forming; and 8) carrying out high-frequency splicing. According to the process, the APET plastic is used as an original material of the plastic products so that the environment can be protected, the resources can be recycled, and the processing cost can be reduced; the reasonable printing process is adopted so that the pattern printing and the pattern die-cutting forming of the APET plastic sheet material can be smoothly completed in shortest time and in most convenient operation steps; and the most suitable forming process is adopted, so that the APET sheet material can be stereoscopically formed smoothly, and the APET plastic products which are attractive in printing, stable in quality and energy-saving can be obtained.

The invention discloses a combined printing device and a printing method. The printing method comprises the steps that a paper conveying mechanism conveys paper to a first offset printing mechanism; the first offset printing mechanism prints paper through an offset printing technology, and the paper is conveyed to a flexible printing mechanism; the flexible printing mechanism prints the paper through a flexible printing technology, and the paper is conveyed to second offset printing mechanisms; a drying mechanism dries flexible printing ink in the paper conveying process; a plurality of second offset printing mechanisms sequentially print the paper through the offset printing technology; a paper collection mechanism carries out collection and stacking on the printed paper. Flexography color groups are combined on an offset printing machine, on the premise of meeting rapid printing, lines, characters and lattice points on single paper are clear, patterns on a printing undertint on-site area on the single paper are uniform and thick, high-speed stable printing is achieved, operation is carried out only according to the working procedure of an offset printing device, and the operation requirement is low.