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  2. Epson QX-10 - Wikipedia

    en.wikipedia.org/wiki/Epson_QX-10

    The Epson QX-10 is a microcomputer running CP/M or TPM-III (CP/M-80 compatible) which was introduced in 1983. It is based on a Zilog Z80 microprocessor, running at 4 MHz, provides up to 256 KB of RAM organized in four switchable banks, and includes a separate graphics processor chip manufactured by NEC to provide advanced graphics capabilities.

  3. Under color removal - Wikipedia

    en.wikipedia.org/wiki/Under_color_removal

    Under color removal is used in process color printing. Black ink used to add details and darkness in shadowed areas is called a skeletal black. With current [as of?] ink technology, the total CMYK ink in the shadows refuses to stick after it reaches the dark shadows (usually above a 250% total CMYK coverage), and begins to peel off.

  4. Black point compensation - Wikipedia

    en.wikipedia.org/wiki/Black_Point_Compensation

    Black point compensation is a technique used in digital photography printing. It is a method of creating adjustments between the maximum black levels of digital files and the black capabilities of various digital devices.

  5. Printing registration - Wikipedia

    en.wikipedia.org/wiki/Printing_registration

    In printing, registration black is a black color that includes 100% of each of the process colors used. Typically these are cyan, magenta, yellow and black , [4] but if different colors are used, registration black marks are made with all of the colorants (inks). [4] Registration black is used for printing crop marks and registration marks ...

  6. CMYK color model - Wikipedia

    en.wikipedia.org/wiki/CMYK_color_model

    The CMYK color model (also known as process color, or four color) is a subtractive color model, based on the CMY color model, used in color printing, and is also used to describe the printing process itself. The abbreviation CMYK refers to the four ink plates used: cyan, magenta, yellow, and key (most often black).

  7. Color printing - Wikipedia

    en.wikipedia.org/wiki/Color_printing

    A method of full-color printing is six-color process printing (for example, Pantone's Hexachrome system) which adds orange and green to the traditional CMYK inks for a larger and more vibrant gamut, or color range. However, such alternate color systems still rely on color separation, halftoning and lithography to produce printed images.