Search results
Results from the WOW.Com Content Network
Methods of copying handwritten letters Manifold stylographic writer, using early "carbonic paper" Letter copying book process; Mechanical processes Tracing to make accurate hand-drawn copies; Pantograph, manual device for making drawn copies without tracing, can also enlarge or reduce; Printmaking, which includes engraving and etching
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]
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.
Carbonless copy paper was first produced by the NCR Corporation, applying for a patent on June 30, 1953. [2] Formerly, the options were to write documents more than once or use carbon paper, which was inserted between the sheet being written upon and the copy. Carbonless paper was used as business stationery requiring one or more copies of the ...
Stephen King, in his book On Writing, writes of how he and his elder brother Dave used the process to create their newspaper, Dave's Rag. It was also used in professional situations; in Macy's advertising department during the 1950s and 1960s, full-page newspaper ad layouts were drawn with hectograph pencils and then duplicated on a hectograph ...
The carbon process, initially a black-and-white process using lampblack (carbon black), was invented by Alphonse Poitevin in 1855. The process was later adapted to color, through the use of pigments, by Louis Ducos du Hauron in 1868. Carbon printing remained commercially popular through the first half of the 20th century.
Copying pencils were introduced in the 1870s and were originally marketed for copying documents, especially for making permanent copies of a permanent original. This was achieved by creating a hand-written document using a copying pencil, laying a moist tissue paper over the document and pressing it down with a mechanical press.
[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 ...