What did they use before photocopiers?

What did they use before photocopiers?

Mimeographs
A 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.

How did teachers make copies in the 70’s?

A mimeograph machine (often abbreviated to mimeo, sometimes called a stencil duplicator) is a low-cost duplicating machine that works by forcing ink through a stencil onto paper. Beginning in the late 1960s and continuing into the 1970s, photocopying gradually displaced mimeographs, spirit duplicators, and hectographs.

How did people make copies?

Copying presses were standard equipment in offices for nearly a century and a half. Among the first modern copying machines, introduced in 1950 by 3M, was the Thermo-Fax, and it made a copy by shining infrared light through an original document and a sheet of paper that had been coated with heat-sensitive chemicals.

How were copies made in the 70s?

Photocopies were created through a process called Xerography. In 1970, Xerox introduced a photocopier that could print on both sides of a sheet of paper. This invention significantly reduced the amount of paper needed to create copies of a document. Color copiers were also invented in the 70s.

What did mimeograph ink 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.

How were copies made before copy machines?

Some documents that were to be copied with copying presses were written with copying pencils rather than copying ink. The cores of copying pencils, which appear to have been introduced in the 1870s, were made from a mixture of graphite, clay, and aniline dye.

Why did dittos smell so good?

The output of the ditto machine had a special aroma. Students could tell when a class assignment was hot out of the machine by the strength of the odor of the pages. The smell came from the ditto machine’s duplicating fluid, a mix of methanol and isopropanol.

What did Ditto ink smell like?

Who was the first company to make a photocopier?

Before long, photocopiers started being called “Xerox machines”, and one could hardly envision a time when the market wasn’t dominated by one company. Of course, knowing what we know now, Xerox is hardly the leader in photocopiers anymore.

Why are photocopiers called Xerox copy machines?

It certainly helped that they held a patent, but even when other companies were able to produce copiers using Xerox’s method, they weren’t trusted. Before long, photocopiers started being called “Xerox machines”, and one could hardly envision a time when the market wasn’t dominated by one company.

How did the copier work in the 1800s?

The copier created an electrostatic image of a document on a rotating metal drum, and used it to transfer toner—ink in a powdered format—to a piece of paper, which would then be sealed in place by heat. It was fast, cranking out a copy in as little as seven seconds.

What was the name of the first copy machine?

Carlson teamed up with The Haliod Company to help develop his process for creating copies — that company later became known as the Xerox Corporation. The Haliod Company produced the world’s first office photocopier in 1955, called the Copyflo. It was not nearly as successful as the Xerox 914, which was invented in 1958 and sold thousands of units.