Glossary of terms used in the screen printing and pad printing

 

Airbrush (Airbrush). Small spray, which causes the color by means of compressed air. Etod method provides the ability to create smooth, hard distinct change of tone, similar to the continuous tones of photographic images.

Balance neutral colors (Gray balance). The combination of cyan, magenta and yellow, which as a result produces a neutral gray.

Byte (Byte). The grouping of the eight bits of data comprises 256 data levels. In the color system can describe one of 256 shades.

Bit (Bit). Short for binary (double) single digits. The smallest unit of information used to store information on your computer.

Vysokosvetlye image areas, high light (Highlights). The lightest portions of the original or a print. Point range of high-light areas in print - from the smallest reproduced in print point to about 25%.

Grading (Gradation). The function of a scanning device used to set the color distribution throughout the tonal range of the image.

Densitometer (Densitometer). The instrument used to measure the passage or reflection of light from the illuminated material. Densitometer for measuring the reflected light is used to measure the color proofing print and applied to the ink.

The range of colors (Colour gamut). A number of colors available within the color system.

Diazo (Diazo). The photosensitive composition that makes stencil emulsions sensitive to light.

Meter tension force (Tensometer) (Tension meter). An apparatus for measuring tissue tension force. Units of measure - Newton.

Interpolation (Interpolation). The method of adding pixels that can increase the resolution of the digital image. The principle of operation is the interpretation of adjacent pixels and determining the average color to set the color of the new pixel. Some scanning devices use this method to obtain resolution higher than that of the optical feature.

Capillary film (Capillaryfilm). Sensitized svetochustvitelnaya polymer film is uniformly deposited on a polyester base.

Contrast (Contrast). (1) The difference in brightness between two specific points of the image. (2) The difference in brightness between the lightest and darkest areas of the image. (3) The ratio between the maximum and the minimum density of the image.

Screen frequency (Screen ruling). Measurement of the number of rows of dots, lines per inch or centimeter.

Scaling (Scaling). Increase or decrease the image size measuring peredpechatyu.

Micron (Micron). One thousandth of a millimeter.

Moire (Moire). Unwanted interference effect. May be derived from the interaction between the ruling for improperly installed corners of images. In screen printing can occur by reacting incorrectly selected screen ruling and screen fabric.

Continuous tone (Continuous tone). Image consisting of the gradient colors.

Number tissue (Meshcount). Number niteyna centimeter. The higher the number, the thinner the fabric and lower layer of paint.

Memory (RAM). Random Access Memory, part of the computer's memory that temporarily stores information while the computer.

Watering squeegee (Flood coater). Raquel, who imbues the stencil paint before imprint.

Relative humidity (RH) (Relative Humidity). The amount of water vapor in the atmosphere, expressed as a percentage.

Printing plates for black ink (Black printer). The black component is added to the cyan, magenta and yellow for contrast enhancement and a darker shadow areas.

Printed gap. (Snap distance / Off contact). The gap between the screen frame and the substrate, which ensures disconnection of the printed area of the fabric substrate after passing squeegee.

Pixels (Pixels). The smallest element of a digital image. Contraction of the words "pixel (picture element)".

The substrate (Substrate). The material (paper, cardboard, plastic and so on. D.), Which must be made print.

Positive (Positive). Image bearing film in a positive way, the opposite negative. It may also be a transparent or translucent paper produced by the digital printer.

Posterize (Posterlzation). Conversion halftone image at a specific number of tones.

Semitone (Halftone). Image reproduced dots of varying size, but uniform density. Creates the illusion of continuous tone when viewed from the appropriate distance.

Pre-pres (Pre-press). Generic term for all the processes included in the preparation of images for printing. Comprises the steps of editing and outputting the input as well as the manufacture of the stencil.

Register-on / mix (Register / Registration). The position at which all the colors in the process of imposing exactly the same and there is no obvious violation of the borders of flowers.

Simple weave (Plain weave). The fabric in which yarn passes over and under adjacent filaments in the warp direction.

Profile frame (Frame profile). The shape of the steel or aluminum profile, from which the frame is made.

Profile dot (Dotshape). Dot shape, which may be a circle, an ellipse, a square or a geometric object.

The resolution of the image (Image Resolution). The number of pixels per inch in the digitized image, or the number of points per inch (cm), the output device used. It may also be the number of bits per pixel.

Dot gain (Dot gain). Effect in which the raster points are increased during the reproduction of the film and printing.

Raster Graphics (Bitmap graphics). Image consisting of otdelnyhpikseley. Color value and the position of each pixel is described in the bits and bytes of computer memory.

Halftone dots in the shadows (Shadow dots). The darkest areas of the image. The seal point shadows contain between 80% and 100%.

Sharpness (Sharpness). Type edges of the image. Sharp edges provide more precise details. No sharp edges of the image leads to defocusing of the image.

Grayscale (Grayscale). Scale transition of gray tones from white to black, which is used to analyze and optimize the process of black and white and color reproduction.

Scanner (Scanner). A device which scans and records images electronically for conversion to film color separations.

Sclerometer (Durometer). Device for measuring the hardness of materials, such lezviyapechatnogo squeegee. Unit of measurement - degrees Shore (Shore).

Midtones (Midtones). The values of the image density between high light and shadows. Midtones - raster elements between approximately 40% and 60%.

Stability on the form (Screen stability). The ability to paint for a long time to go through all the open areas of the stencil, without blocking the cells with dried paint.

Color table (CLUT) .Dvuh or three-ny array of values for specific input-output relationships. When one input value is known, the system can automatically determine the value vyvoda- ie, the system can find the required size dot printing conditions for the data based on the stored gray level.

Twill-weave (Twill weave). The fabric in which yarn passes over one (or two) and for the two adjacent filaments.

Tonal compression (Tonal compression). Reducing the interval of the optical densities of the original interval to optical densities achievable during playback.

Spot loss (Dot loss). The decrease in the amount of raster point in the process of reproduction of the film print. Mainly manifested in vysokosvetlyh areas.

Point (Dot). The individual elements of a semitone.

Screen Emulsion (Stencil emulsion). The liquid polymer emulsion which is applied after the sensitization stencil, dried and treated. The exposed emulsion remains in the screen, hence the term direct emulsions.

Trihromatik (Trichromatic). Three primary subtraktiva cyan, magenta and yellow. In the printing process adds a fourth black.

The angle of the raster (Screen angle). Position lines of dots represented in degrees. During withdrawal of positives for reproducing the line of dots for individual films are arranged at different angles relative to each other - in order to avoid interference (moire) effects between each color.

UV-curing (UV curing). Radiation with a wavelength shorter than visible light and having a strong actinic (reactive) effect. Ultraviolet \ howling radiation used to expose stencils and paint curing.

Hue (Colour cast). The predominance of a certain color, which affects everything in the original image, proofing or print.

Separations film (Separation films). Film for each of the process colors used for pechati.Obychno uses a set of four films - cyan, magenta, yellow and black.

Digital file size (Digital file size). Criterion for the amount of data held faylomv memory.

Brightness (Brightness). The amount of light reflected from the surface regardless of the color saturation or brightness tsveta.Na affects reflectance of the paper.

CMYK. Process colors: Cyan, Magenta, Yellow and Black. Used to refer to the black component to avoid putannitsa blue (blue).

Cromalin. Photographic sample made consistent exposure separations films. Used as a guide for the final print.

DCS. Abbreviation for Desktop Colour Separation, EPS data file that contains five files: four color files, one for each CMYK component, and composite view-file for a holistic view of the image.

DPI. Dots per inch - the criterion of resolution of the output device.

EPS. Encapsulated PostScript. Flexible graphical format to save object-graphs, bitmap, grayscale and RGB images.

GCR. Replacement Gray makes - method of reducing the amount of CMY, which produces a gray component in the color without changing the hue.

Gsm. Weight of paper or paperboard in grams per square meter.

Imagesetter. A device for output raster color separations by exposing traditional film or laser luchёm O separations processed on a special film by thermal or inkjet printing.

LPI. Lines per inch - the number of lines of dots per inch.

Matchprint. Cm. Kromalin.

PostScript. Yazykopisaniya pages developed by AdobeSystems, which describes the fonts, graphics and page layout.

PPI. Ppi - criterion resolution digital image.

RGB. Acronym for primary additives Red, Green and Blue, are used in monitors, as opposed to primary subtraktivam used in four-color process printing.

RIP. Raster Image Processor. Hardware device or a software emulator. His task - to convert PostScript data into a matrix of dots.

TIFF. Tagged Image File Format. TIFF images can be black and white line art, black and white or color.

UCR. The method of reducing the amount of CMY in areas of neutral gray tones and replacing them with black. As a result, the print view does not change, but uses a smaller amount of CMY colors.

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