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  2. List of duplicating processes - Wikipedia

    en.wikipedia.org/wiki/List_of_duplicating_processes

    Carbonless copy paper; Photographic processes: Reflex copying process (also reflectography, reflexion copying) Breyertype, Playertype, Manul Process, Typon Process, Dexigraph, Linagraph; Daguerreotype; Salt print; Calotype (the first photo process to use a negative, from which multiple prints could be made) Cyanotype; Photostat machine; Rectigraph

  3. Mimeograph - Wikipedia

    en.wikipedia.org/wiki/Mimeograph

    The process was called mimeography, and a copy made by the process was a mimeograph. Mimeographs, along with spirit duplicators and hectographs, were common technologies for printing small quantities of a document, as in office work, classroom materials, and church bulletins.

  4. Carbon copy - Wikipedia

    en.wikipedia.org/wiki/Carbon_copy

    A copy made with carbon paper. Before the development of photographic copiers, a carbon copy was the under-copy of a typed or written document placed over carbon paper and the under-copy sheet itself (not to be confused with the carbon print family of photographic reproduction processes). [1]

  5. Duplicating machines - Wikipedia

    en.wikipedia.org/wiki/Duplicating_machines

    A copying clerk would begin by counting the number of master letters to be written during the next few hours and by preparing the copying book. Suppose the clerk wanted to copy 20 one-page letters. In that case, he would insert a sheet of oiled paper into the copying book in front of the first tissue on which he wanted to make a copy of a letter.

  6. Thermofax - Wikipedia

    en.wikipedia.org/wiki/Thermofax

    [2] [3] It was a form of thermographic printing and an example of a dry silver process. [4] It was a significant advance as no chemicals were required, other than those contained in the copy paper itself. A thin sheet of heat sensitive copy paper was placed on the original document to be copied, and exposed to infrared energy. Wherever the ...

  7. Carbon paper - Wikipedia

    en.wikipedia.org/wiki/Carbon_paper

    A sheet of carbon paper, with the coating side down Handwriting duplicated through carbon paper. Carbon paper (originally carbonic paper) consists of sheets of paper that create one or more copies simultaneously with the creation of an original document when inscribed by a typewriter or ballpoint pen. The email term cc which means ‘carbon ...

  8. Copying - Wikipedia

    en.wikipedia.org/wiki/Copying

    Copying is the duplication of information or an artifact based on an instance of that information or artifact, and not using the process that originally generated it. With analog forms of information, copying is only possible to a limited degree of accuracy , which depends on the quality of the equipment used and the skill of the operator.

  9. Spirit duplicator - Wikipedia

    en.wikipedia.org/wiki/Spirit_duplicator

    Spirit duplicators had the useful ability to print multiple colors in a single pass, which made them popular with cartoonists. Multi-colored designs could be made by swapping out the waxed second sheets; for instance, shading in only the red portion of an illustration while the top sheet was positioned over a red-waxed second sheet.