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  2. Printer tracking dots - Wikipedia

    en.wikipedia.org/wiki/Printer_tracking_dots

    Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was ...

  3. Widows and orphans - Wikipedia

    en.wikipedia.org/wiki/Widows_and_orphans

    In typesetting, widows and orphans are single lines of text from a paragraph that dangle at either the beginning or end of a block of text, or form a very short final line at the end of a paragraph. [1] When split across pages, they occur at either the head or foot of a page (or column), unaccompanied by additional lines from the same paragraph ...

  4. Printer's key - Wikipedia

    en.wikipedia.org/wiki/Printer's_key

    A copyright page with the printer's key underlined. This version of the book is the eighteenth printing. The printer's key , also known as the number line , is a line of text printed on a book's copyright page (often the verso of the title page , especially in English-language publishing) used to indicate the print run of the particular edition.

  5. List of proofreader's marks - Wikipedia

    en.wikipedia.org/wiki/List_of_proofreader's_marks

    Depending on local conventions, underscores (underlines) may be used on manuscripts (and historically on typescripts) to indicate the special typefaces to be used: [4] [5] single dashed underline for stet, 'let it stand', proof-reading mark cancelled. single straight underline for italic type; single wavy underline for bold type

  6. Line matrix printer - Wikipedia

    en.wikipedia.org/wiki/Line_matrix_printer

    Dot matrix printers are divided into two main groups: serial dot matrix printers and line matrix [1] printers. Line matrix mechanism A serial dot matrix printer has a print head that runs back and forth, or in an up and down motion, on the page and prints by impact, striking an ink-soaked cloth ribbon against the paper, much like the print ...

  7. Continuous stationery - Wikipedia

    en.wikipedia.org/wiki/Continuous_stationery

    Many laser printers can print on both sides of the paper (duplex printing), which is not possible with continuous stationery. Standard perforations are 5/32 inch in diameter (3.96875 mm, sometimes called 4 mm) and are spaced at 1 ⁄ 2 inch (13 mm) center-to-center. Tear-off horizontal perforations at page top/bottom are exactly in-between ...

  8. Stripping (printing) - Wikipedia

    en.wikipedia.org/wiki/Stripping_(printing)

    "Cleaning" a negative of unwanted artifacts (noise) from the line camera process, (lines, etc., from the edges of traditional hot-wax analog "font" paste-up, and dirt), would be done by scraping the exposed emulsion from the negative with an X-Acto Knife (for areas intended to be exposed on the printing plate).

  9. Lines per inch - Wikipedia

    en.wikipedia.org/wiki/Lines_per_inch

    Lines per inch (LPI) is a measurement of printing resolution. A line consists of halftones that is built up by physical ink dots made by the printer device to create different tones. Specifically LPI is a measure of how close together the lines in a halftone grid are. The quality of printer device or screen determines how high the LPI will be.