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2. Spirit duplicator - Wikipedia

   en.wikipedia.org/wiki/Spirit_duplicator

   v. t. e. A spirit duplicator (also referred to as a Rexograph or Ditto machine in North America, Banda machine or Fordigraph machine in the U.K. and Australia) is a printing method invented in 1923 by Wilhelm Ritzerfeld that was commonly used for much of the rest of the 20th century. The term "spirit duplicator" refers to the alcohols that were ...

3. Inkjet printing - Wikipedia

   en.wikipedia.org/wiki/Inkjet_printing

   t. e. Inkjet printing is a type of computer printing that recreates a digital image by propelling droplets of ink onto paper and plastic substrates. [ 1 ] Inkjet printers were the most commonly used type of printer in 2008, [ 2 ] and range from small inexpensive consumer models to expensive professional machines.

4. Inkjet technology - Wikipedia

   en.wikipedia.org/wiki/Inkjet_technology

   Inkjet technology originally was invented for depositing aqueous inks on paper in 'selective' positions based on the ink properties only. Inkjet nozzles and inks were designed together and the inkjet performance was based on a design. It was used as a data recorder in the early 1950s, [1] later in the 1950s co-solvent-based inks in the ...

5. Mimeograph - Wikipedia

   en.wikipedia.org/wiki/Mimeograph

   A mimeograph machine (often abbreviated to mimeo, sometimes called a stencil duplicator or stencil machine) was a low-cost duplicating machine that worked by forcing ink through a stencil onto paper. [1] The process was called mimeography, and a copy made by the process was a mimeograph. Mimeographs, along with spirit duplicators and ...

6. Ink - Wikipedia

   en.wikipedia.org/wiki/Ink

   Ink. Bottles of ink from Germany. Writing ink and a quill. Ink is a gel, sol, or solution that contains at least one colorant, such as a dye or pigment, and is used to color a surface to produce an image, text, or design. Ink is used for drawing or writing with a pen, brush, reed pen, or quill. Thicker inks, in paste form, are used extensively ...

7. Hectograph - Wikipedia

   en.wikipedia.org/wiki/Hectograph

   Hectography, requiring limited technology and leaving few traces behind, has been deemed useful both in low-technology environments and in clandestine circumstances where discretion was necessary. In the earlier 20th century, the process lent itself to small runs of school classroom test papers, church newsletters and science fiction fanzines.