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  2. Paper and ink testing - Wikipedia

    en.wikipedia.org/wiki/Paper_and_ink_testing

    Set-off is measured at two different time intervals, 0.35s and 3s. A freshly printed surface is pressed against a paper after 0.35s and after 3s. Then the set-off density is measured. The idea behind selecting these two timings is to know what will be the set-off when the materials are used in a high-speed press and a low-speed press.

  3. Digital negative (transparency) - Wikipedia

    en.wikipedia.org/wiki/Digital_negative...

    Generally, digital negatives are made using an inkjet printer using black ink only, adjusted to the proper density to suit the process. This can be achieved simply with curves or other adjustments in an image editing program or using special printer drivers or raster image processors. [1]

  4. Dots per inch - Wikipedia

    en.wikipedia.org/wiki/Dots_per_inch

    Dots per inch. A close-up of the dots produced by an inkjet printer at draft quality. Actual size is approximately 1⁄4 by 1⁄4 inch (6 by 6 mm). Individual coloured droplets of ink are visible; this sample is about 150 DPI. Dots per inch (DPI, or dpi[1]) is a measure of spatial printing, video or image scanner dot density, in particular the ...

  5. Dot matrix printing - Wikipedia

    en.wikipedia.org/wiki/Dot_matrix_printing

    Dot matrix printing. Dot matrix printing, [1] sometimes called impact matrix printing, is a computer printing process in which ink is applied to a surface using a relatively low-resolution dot matrix for layout. Dot matrix printers are a type of impact printer that prints using a fixed number of pins or wires [2][3] and typically use a print ...

  6. G7 Method - Wikipedia

    en.wikipedia.org/wiki/G7_Method

    The G7 Method is a printing procedure used for visually accurate color reproduction by putting emphasis on matching grayscale colorimetric measurements between processes. . G7 stands for grayscale plus seven colors: the subtractive colors typically used in printing (Cyan, Magenta, Yellow, and Black) and the additive colors (Red, Green, and Blu

  7. Thermal printing - Wikipedia

    en.wikipedia.org/wiki/Thermal_printing

    The coating turns black in the areas where it is heated, producing an image. [2] Most thermal printers are monochrome (black and white) although some two-color designs exist. Thermal-transfer printing is a different method, using plain paper with a heat-sensitive ribbon instead of heat-sensitive paper, but using similar print heads.

  8. Near letter-quality printing - Wikipedia

    en.wikipedia.org/wiki/Near_letter-quality_printing

    Near letter-quality (NLQ) printing is a process where dot matrix printers produce high-quality text by using multiple passes to produce higher dot density. [1] The tradeoff for the improved print quality is reduced printing speed. Software can also be used to produce this effect. [2][3] The term was coined in the 1980s to distinguish NLQ ...

  9. Halftone - Wikipedia

    en.wikipedia.org/wiki/Halftone

    Commercial printers wanted a practical way to realistically reproduce photographs onto the printed page, but most common mechanical printing processes can only print areas of ink or leave blank areas on the paper and not a photographic range of tones; only black (or coloured) ink, or nothing.