Question: Why Do They Sniff The Paper In Fast Times?

What are the types of duplicating process?

Duplicating processesMethods of copying handwritten letters.

Manifold stylographic writer, using early “carbonic paper” Letter copying book process.Mechanical processes.

Tracing to make accurate hand-drawn copies.

Printmaking, which includes engraving and etching.

Relief printing including woodcut..

What is the difference between mimeograph and ditto?

The mimeograph printing process used an ink-filled cylinder and ink pad. … In contrast, the ditto machine used no ink. The user typed, wrote, or drew on a ditto master sheet which was backed by a second sheet of paper coated with a dye-impregnated, waxy substance.

What does a mimeograph machine look like?

Mimeograph, also called stencil duplicator, duplicating machine that uses a stencil consisting of a coated fibre sheet through which ink is pressed. … Employing a typewriter with the ribbon shifted out of the way so that the keys do not strike it, the information to be duplicated is typed on the stencil.

What did we use before photocopiers?

Yog Sothoth. I’m trying to get hold of one of those old hand-cranked duplicators (bander machines?) we used at school in the 70s and 80s, before photocopiers. You put ink in (usually purple) and hand-cranked it, and could make copies of documents.

What is a ditto master?

my public school education, from 1962-1973. Ditto masters were thick white glossy top sheets attached to thick. purple backing sheets. When you wrote or typed on a ditto master the purple ink on the inside of the backing sheet. would adhere to the back of the white top sheet.

What was the first copy machine?

Inventor Chester Carlson used static electricity created with a handkerchief, light and dry powder to make the first copy on Oct. 22, 1938. The copier didn’t get on to the market until 1959, more than 20 years later. When it did, the Xerox machine prompted a dramatic change in the workplace.

Why is photocopy called Xerox?

After consulting a professor of classical language at Ohio State University, Haloid and Carlson changed the name of the process to “xerography”, which was derived from Greek words that meant “dry writing”. Haloid called the new copier machines “Xerox Machines” and, in 1948, the word “Xerox” was trademarked.

What is the use of duplicating machine?

Duplicating machine, a device for making duplicate copies from a master copy of printed, typed, drawn, or other material and utilizing various reproduction techniques to this end. The major types of duplicating machines are stencil (or mimeograph), hectograph, multilith (or offset lithograph), and imprinting (qq. v.).

How does a duplicator work?

Digital duplicators, in a way, borrow ideas from these technologies to create a modern-day ink-printing machine. … The master is then wrapped around an ink drum. The drum, filled with ink, squeezes ink out through the tiny holes on the master. As the drum rotates, it rolls over paper, leaving the image on the paper.

Who invented the mimeograph?

Thomas EdisonMimeograph/Inventors

How did they make copies in the 70s?

Actually they were spirit copiers, but we called them mimeos and mimeograph machines. Mimeos consisted of a purple sheet of paper coated with a slick purple substance with a white sheet on top. You typed (or wrote) what you wanted mimeographed on the white side of the paper.

What is duplicating fluid?

The duplicating fluid typically consisted of a 50/50 mix of isopropanol and methanol, both of which were inexpensive, readily available in quantity, evaporated quickly, and would not wrinkle the paper.

What is the difference between duplicating machine and photocopying machine?

Strictly speaking, duplicating machines are different from photocopying machines, in which copies are made from an original in an exposure–image-forming process. Many duplicating machines that were once commonly used became largely obsolete with the development of photocopiers.

What was in mimeograph ink?

The mimeograph became the most widely used system for mass-producing papers with print on them. The ink it used ended up looking deep blue or purple. The materials also made mimeographed paper have a unique smell. That fragrance came from the machine’s output; the duplicator fluid had methanol and isopropanol in it.

How did a mimeograph machine work?

The stencil duplicator or mimeograph machine (often abbreviated to mimeo) is a low-cost duplicating machine that works by forcing ink through a stencil onto paper. … In the late 1960s, mimeographs, spirit duplicators, and hectographs began to be gradually displaced by photocopying.

What did teachers use before photocopiers?

Before photocopiers took over the short-run end of copy making, messy and relatively inexpensive machines called dittos, mimeographs and Gestetners ruled the earth. Virtually every school, office and union hall had one in the back room, usually surrounded by reams of paper and the unmistakable odor of fresh solvent.

How did they make copies before Xerox?

The mimeo machine (mimeograph) invented by Albert Blake Dick in 1884 used heavy waxed-paper “stencils” that a pen or a typewriter could cut through. The stencil was wrapped around the drum of the (manual or electrical) machine, which forced ink out through the cut marks on the stencil.

What were old photocopiers called?

MimeographsA mimeograph is an old-fashioned copy machine. Mimeographs were often used for making classroom copies in schools before photocopying became inexpensive in the mid- to late-twentieth century.

When was the mimeograph invented?

Aug. 8, 18768, 1876: Edison Patents Mimeograph.

What does ditto paper smell like?

With its rapturously fragrant, sweetly aromatic pale blue ink, mimeograph paper was literally intoxicating. Two deep drafts of a freshly run-off mimeograph worksheet and I would be the education system’s willing slave for up to seven hours.”[1] Bryson appears have confused dittos with mimeographs, however.

When did schools stop using ditto machines?

Its decline began in the 1970s, and by the mid 1990s, the Ditto was virtually extinct — although it can still be found on rare occasions, its appeal being that it does not require electrical power to run.

What does mimeograph mean?

: a duplicator for making many copies that utilizes a stencil through which ink is pressed.

What was a Gestetner machine?

The Gestetner is a type of duplicating machine named after its inventor, David Gestetner (1854 – 1939). During the 20th century, the term Gestetner has been used as a verb—as in Gestetnering. … The business grew, remaining within the control of the Gestetner family, and acquiring other businesses.

Which Duplicator is known as gelatine duplicator?

Hectograph, direct-process duplicator using either gelatin or the spirit process for making a master copy. The gelatin process, now rarely used, requires the preparation of a special master paper upon which the copy to be duplicated is typed, written, or drawn with a special ink or ribbon.

How did a ditto machine work?

A ditto machine was a primitive photocopier that used a solvent like methylated spirits or ammonia to transfer ink from the master copy (the template, if you will) onto other pieces of paper. … The master was then wrapped around a drum, and the solvent was applied as the drum rotated.