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2. Blueprint - Wikipedia

   en.wikipedia.org/wiki/Blueprint

   The blueprint process is based on a photosensitive ferric compound. The best known is a process using ammonium ferric citrate and potassium ferricyanide. [6] [7] The paper is impregnated with a solution of ammonium ferric citrate and dried. When the paper is illuminated, a photoreaction turns the trivalent ferric iron into divalent ferrous iron.

3. Architectural reprography - Wikipedia

   en.wikipedia.org/wiki/Architectural_reprography

   A US defense agent scanning in architectural documents. Architectural reprography, the reprography of architectural drawings, covers a variety of technologies, media, and supports typically used to make multiple copies of original technical drawings and related records created by architects, landscape architects, engineers, surveyors, mapmakers and other professionals in building and ...

4. House plan - Wikipedia

   en.wikipedia.org/wiki/House_plan

   Elevation view of the Panthéon, Paris principal façade Floor plans of the Putnam House. A house plan [1] is a set of construction or working drawings (sometimes called blueprints) that define all the construction specifications of a residential house such as the dimensions, materials, layouts, installation methods and techniques.

5. Whiteprint - Wikipedia

   en.wikipedia.org/wiki/Whiteprint

   The light sensitivity of the chemicals used was known in the 1890s and several related printing processes were patented at that time. Whiteprinting replaced the blueprint process for reproducing architectural and engineering drawings because the process was simpler and involved fewer toxic chemicals. A blue-line print is not permanent and will ...

6. Plan (drawing) - Wikipedia

   en.wikipedia.org/wiki/Plan_(drawing)

   A set of plans can be on standard office-sized paper or on large sheets. It can be stapled, folded or rolled as required. A set of plans can also take the form of a digital file in a proprietary format such as DWG or an exchange file format such as DXF or PDF. Plans are often referred to as "blueprints" or "bluelines".

7. Ozalid (trade mark) - Wikipedia

   en.wikipedia.org/wiki/Ozalid_(trade_mark)

   OZALID was first federally registered in the United States as a trademark on February 5, 1929 as a brand for light-sensitive copying and photographic papers. The registration currently is owned by R.Q.O. Holding Company, Inc. of New York, and is related to the even earlier registration of October 11, 1923 in what is now the Federal Republic of Germany. [2]