1574 results about "Laser printing" patented technology

The invention describes a laser printing system (100) for illuminating an object moving relative to a laser module of the laser printing system (100) in a working plane (180), the laser module comprising at least two laser arrays of semiconductor lasers and at least one optical element, wherein the optical element is adapted to image laser light emitted by the laser arrays, such that laser light of semiconductor lasers of one laser array is imaged to one pixel in the working plane of the laser printing system, and wherein the laser printing system is a 3D printing system for additive manufacturing and wherein two, three, four or a multitude of laser modules (201, 202) are provided, which are arranged in columns (c1, c2) perpendicular to a direction of movement (250) of the object in the working plane (180), and wherein the columns are staggered with respect to each other such that a first laser module (201) of a first column of laser modules (c1) is adapted to illuminate a first area (y1) of the object and a second laser module (202) of a second column (c2) of laser modules is adapted to illuminate a second area (y2) of the object, wherein the first area (y1) is adjacent to the second area (y2) such that continuous illumination of the object is enabled.

The invention relates to a materialized heart 3D model manufacturing method capable of achieving internal and external structures. The method can overcome the defects in the prior art. The method includes the steps that (1) the heart part of a patient is scanned to obtain medical image data to form a DICOM file; (2) the DICOM file obtained in the step (1) is identified through Mimics software and stored to form a computer-identified .mcs file; (3) different data templates are extracted from the software; (4) the templates, with cavity structures or incomplete images or unclear boundaries, obtained in the step (3) are processed to be made clear and complete; (5) a needed template is formed by adding or deleting or separating or combining the templates; (6) a 3D image formed in the step (5) is processed to enable the exterior of the 3D image to be smooth and interior image templates to be complete to form an STL file; (7) data processed in the step (6) are input in a 3D laser printer, and accordingly a heart model is printed. According to the method, heart models with clear and complete structures can be obtained, and the success rate of heart operations can be greatly increased.

An improved method for accurately and correctly encoding and printing complete checks on blank paper sheets with data derived from a host check printing program which may employ partially preprinted check forms. The method includes forming, in computer memory, a matrix array representative of the information printed by the host program. Intercepting the print check data generated by the host program. Deciphering and reformatting such host check data with other check information stored in a control file. The control file information is keyed to a selected assigned series of check numbers stored in a control file and extracted based on the check number of the check being processed. Checks are printed on blank paper sheets using the host check data under the control of a separate program that includes printing MICR information with magnetic ink in MICR font.

Method and apparatus for controlling a temperature of a thermal fixing unit which is for the purpose of maintaining the balance between a fixing rate and the occurrence of wrinkles even if a distance between paper sheets greatly varies within a printer. When image formation is consecutively made onto a plurality of record mediums without stopping an operation of an image forming apparatus, an interval between the record mediums is detected, and a controlled target temperature for a thermal fixing unit is switched and set in accordance with the interval between the record mediums to control a heat source so that the temperature of the thermal fixing unit reaches the controlled target temperature. The image Corming apparatus may include an electrophotographic recording apparatus such as a copying machine, facsimile and laser printer using a toner.

The invention discloses a 3D laser printing method and system. A four-parameter continuous modulation laser printout method is adopted to prepare a 3D image consisting of diffraction pixels arranged according to the position coordinates and provided with both a specific grating space frequency and an angle of orientation; the modulation method of parameters of grating stripes in the diffraction pixels is realized on the basis of a 4F imaging system and a diffraction grating; the 4F imaging system comprises a first Fourier transformation lens or lens group and a second Fourier transformation lens or lens group; the diffraction grating is placed between the first Fourier transformation lens or lens group and the second Fourier transformation lens or lens group; the distance between the diffraction grating and the first Fourier transformation lens or lens group is changed to realize continuous modulation of the space frequency of the grating stripes; and the diffraction grating is rotated to realize continuous modulation of the grating orientation angle of the grating stripes. The 3D laser printing method and system realize continuous adjustment of the space frequency and the orientation of the grating, and encodes on the basis of the four-parameter micro-nano structure with continuously changeable space frequency and orientation of the grating to form a 3D color image.

A continuous microlens array magnifying display method for antiforge purpose is disclosed. The printing, laser printing, fine processing and microcarving are used to make the micrographics. The fine processing is used to make the microlens array with continuous surface. The diameter of each microlens is matched with that of each micrographics. After they are combined in different modes, a 3D magnifying display effect with single graphics-single color or multiple graphicses-multiple colors is obtained, which can be used for antiforge purpose.

The invention discloses a fabrication method of a double-side PERC crystalline silicon solar cell. The fabrication method comprises the following steps of (1) removing damage of a silicon wafer, and performing texturing and cleaning; (2) performing diffusion to form a pn junction and performing front-surface laser doping; (3) etching and removing PSG; (4) plating a back-surface passivation thin film; (5) plating a front-surface anti-reflection film; (6) printing boron source paste on a back surface; (7) performing back-surface laser doping and windowing; (8) performing back-surface electrode printing; and (9) performing front-surface electrode printing. A laser doping technology is applied to a process of a selective emitter formed on a front surface and local boron doping on the back surface, only two processes of laser doping and boron source paste printing are added on the basis of a conventional PERC battery process, and the conversion efficiency of the double-side PERC cell is greatly improved; moreover, with the adoption of a secondary printing alignment laser printing MARK point mode, the back-surface metallization of the double-side PERC cell is achieved; and by the method,the problem of difficulty in alignment of a back-surface aluminum grid line to a laser windowing grid line of the silk-screen printed double-sided PERC cell is completely solved.

Methods and systems for controlling gas atmospheres in three-dimensional laser printing and weld overlay consolidation operations using metallic powders are provided. In one or more embodiments, such systems and methods comprise a printing chamber or laser weld overlay system, a gas supply system, a feed powder system, and one or more sensors employed to control the printing or welding operation. The methods and systems of the invention employ one or more inert gases having a purity greater than or equal to 99.995%

The invention discloses a 3D printing method of a gradient material structure. Mixed printing of multiple materials can be achieved, and the structure having gradient gradually-changing mechanical property and physical property is processed. The device adopted in the 3D printing method mainly comprises a computer-control system, a powder spreading mechanism, a laser printing system and a printing worktable. When the 3D printing method is used for 3D printing, a gradient gradually-changing layer and a composite layer in a printing layer piece are needed to be further subdivided, and the material component information of layer pieces, selection information of the powder spreading device, powder spreading path information and printing path information are recorded. The information is utilized to control the powder spreading process and printing process in the printing forming process in real time. The 3D printing method is a novel method for quick processing and manufacture of functional gradient material structures and composite material structures and quick manufacture of complicated-shaped functional gradient material structures and composite material structures.

The invention provides TC21 titanium alloy powder for laser 3D printing and preparation and using methods. The powder is prepared from, by mass, 5.5%-6.7% of Al, 1.7%-2.4% of Sn, 1.7%-2.4% of Zr, 2.4%-3.1% of Mo, 1.0%-1.8% of Cr, 1.8%-2.2% of Nb, 0.004%-0.18% of Fe, 0.004%-0.01% of C, 0.002%-0.009% of N, 0.003%-0.01% of H, 0.08%-0.1% of O and the balance Ti. The preparation method comprises the steps that TC21 titanium alloy is machined into an electrode and then rotates and goes down in a smelting chamber, gas acts on the conical tip of a titanium bar when the tip of the titanium bar is bright white, titanium alloy liquid drops are brought into an atomizing chamber through nozzles to be cooled into alloy powder, and the alloy powder is collected. The using method comprises the steps that after the alloy powder with the particle size ranging from 54 micrometers to 180 micrometers and a substrate are pretreated, the as-deposited TC21 titanium alloy with the good strength and toughness is printed by adopting a laser 3D printer, wherein the tensile strength is 1,100-1,150 Mpa, the yield strength is 1,010-1,030 Mpa, and the elongation rate is 7%-8%.

The present invention relates to ink-jet inks in combination with a clear, dry toner to produce a permanent ink-jet image. In particular, this invention relates to an ink system that utilizes the addition of specific toner/developers, typically found in the laser printer field, with aqueous based in-jet inks. These dual systems produce a permanent image that is resistant to image degradation factors such as mechanical abrasion, light, water, and solvents such as the ones used in highlighter markers.

System and method for scanning light across a light-receiving surface. A system for scanning light across a light-receiving surface to project a scanned line on the light-receiving surface has a light beam generator for generating a plurality of light beams. A scanning mechanism simultaneously scans each light beam of the plurality of light beams across the light-receiving surface to project a different portion of the scanned line on the light-receiving surface. The scanning system can be utilized in a compact laser printer capable of printing at a high rate, and in other scanning applications.

Several methods for making a contact lens with a reservoir are disclosed. The reservoir is filled with fluid and is shaped to change dynamically the optical characteristics of the lens. One method includes forming two shells with a depression therebetween, laminating the shells together, with the reservoir being filled with a fluid. Other methods include molding lens shells and laminating them together, or forming the lens with a unitary body using laser printing techniques.

A printer fuser with a plurality of separately powerable heating zones along its length for permitting variably controllable heat application to a medium.

The present invention provides a laser 3D printing system and its printing method. The printing system includes: a laser, a scanning lens connected to the laser, an optical system, a vacuum cavity, a gas cylinder located outside the vacuum cavity, and a gas cylinder connected to the gas cylinder. And extend into the air pipe of the vacuum cavity, the working cavity and the radiant heat source positioned in the vacuum cavity, the powder spreading roller positioned on the working cavity, wherein the working cavity is provided with a raw material cavity, a molding cavity, and waste cavity. The present invention uses Teflon powder as consumables for 3D printing. By adopting laser selective sintering technology, the environment and process of molding are controlled at the same time. Efforts have been made to improve the detection and control of the already formed environment, and realize the rapid prototyping process that can use Teflon material series.

This invention discovers a special pigment groom hectograph paper and its preparation. It utilizes the advantages of high yields machine pulp (PRC-APMP) and deink pulp (DIP) which is well thickness and green environment. That is optimizing pigment spreading formulation, optimizing pulp to materials ratio and its wet end chemical and copy making technique to reach the white value of all bleaching chemical pulp proportioning copy paper. The advantages of the products are: better printing adaptability, better relaxation thickness, better printing effect features compared with all chemical pulp hectograph paper. It's capable of producing top grade office and printing culture special pigment groom hectograph paper which is made according to different clients' requirement and selecting different optimized features' technique for different application such as laser printing, xerography and hectograph etc. So, it's capable of decreasing all chemical pulp quantity, saving wood, protecting forest, protecting environment from pollution.

The present invention provides methods and apparatus for rapidly starting or bringing an oscillating device to its resonant frequency, and operating deflection amplitude. The invention is particularly applicable for use with an oscillating mirror used as the scanning engine of a laser printer. Control circuitry of the oscillating device first determines the resonant frequency of the device and then adjusts or increases the duty cycle of successive energy drive pulses until a selected deflection amplitude is reached. Energy drive pulses at the resonant frequency of the device and the adjusted duty cycle are then provided to maintain oscillation of the device. In a laser printer, a single sensor is used to determine the deflection amplitude of the resonant beam sweep by determining the spacing or timing between a pair of the sensors pulses.

An apparatus and method for refilling pigment cartridges. The apparatus includes a device for engaging a pigment cartridge and a pigment reservoir. A pigment transfer device, having an enabling input, is coupled to convey pigment from the pigment reservoir to the device for engaging a pigment cartridge upon activation of the enabling input. The apparatus also includes an accounting device coupled to the enabling input, such that the accounting device activates the enabling input upon receiving an account stimulus, and, thereby effects a transfer of pigment from the pigment reservoir to the pigment cartridge. In illustrative embodiments the pigment is toner or ink for laser printers and inkjet printer respectively. The accounting stimulus may be approval for a credit card transaction, a cost accounting systems, or may be cash payment.