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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. PC LOAD LETTER - Wikipedia

   en.wikipedia.org/wiki/PC_LOAD_LETTER

   It means that the printer is trying to print a document that needs "Letter size" (8½ × 11 in.) paper when no such paper is available. [3] Early LaserJet models used a two-character display for all status messages. This printer is showing "00", for normal status. Paper out in the upper cassette would be indicated by alternating "11" and "UC".

4. Control character - Wikipedia

   en.wikipedia.org/wiki/Control_character

   The carriage return character (CR), when sent to such a device, causes it to put the character at the edge of the paper at which writing begins (it may, or may not, also move the printing position to the next line). The line feed character (LF/NL) causes the device to put the printing position on the next line.

5. List of steganography techniques - Wikipedia

   en.wikipedia.org/wiki/List_of_steganography...

   Microdots were typically minute (less than the size of the period produced by a typewriter). World War II microdots were embedded in the paper and covered with an adhesive, such as collodion that was reflective and so was detectable by viewing against glancing light. Alternative techniques included inserting microdots into slits cut into the ...

6. Non-printing character in word processors - Wikipedia

   en.wikipedia.org/wiki/Non-printing_character_in...

   To display characters on the monitor screen in Microsoft Word (Home tab) or OpenOffice.org and its derivatives (upper panel), press the icon ¶. [3] The following symbols will be displayed: [citation needed] Space (·) each pressing of the space key will be displayed like this.

7. Dot matrix printing - Wikipedia

   en.wikipedia.org/wiki/Dot_matrix_printing

   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 head that moves 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. They were also known as serial dot matrix printers. [4]

8. Paper size - Wikipedia

   en.wikipedia.org/wiki/Paper_size

   Most industry standards express the direction of the grain last when giving dimensions (that is, 17 × 11 inches is short grain paper and 11 × 17 inches is long grain paper), although alternatively the grain alignment can be explicitly indicated with an underline (11 × 17 is a short grain) or the letter "M" for "machine" (11M × 17 is a short ...

9. Photocopier - Wikipedia

   en.wikipedia.org/wiki/Photocopier

   During the 1980s, a convergence began in some high-end machines towards what came to be called a multi-function printer: a device that combined the roles of a photocopier, a fax machine, a scanner, and a computer network-connected printer. Low-end machines that can copy and print in color have increasingly dominated the home-office market as ...