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Xerox

Xerox is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Xerox rather than just read about it. In short: Xerox Holdings Corporation (, ZEER-oks) is an American corporation that sells printers, digital document products, and services in more than 160 countries. Xerox was the pioneer of the photocopier market, beginning with the introduction of the Xerox 914 in 1959, so much so that the word xerox is commonly used as a synonym for photocopy.

Xerox — main illustration
Xerox — illustration

Key takeaways

  • Xerox belongs to computer science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Xerox to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Xerox from memory before moving on to harder problems.

Reference excerpt

Xerox Holdings Corporation (, ZEER-oks) is an American corporation that sells printers, digital document products, and services in more than 160 countries. Xerox was the pioneer of the photocopier market, beginning with the introduction of the Xerox 914 in 1959, so much so that the word xerox is commonly used as a synonym for photocopy. Xerox is headquartered in Norwalk, Connecticut, though it is incorporated in New York with its largest group of employees based around Rochester, New York, where the company was founded. As a large, established business, it is consistently placed on the Fortune 500 list of companies. The company purchased Affiliated Computer Services for $6.4 billion in early 2010. On December 31, 2016, Xerox separated its business process service operations, essentially those operations acquired with the purchase of Affiliated Computer Services, into a new publicly traded company, Conduent. Xerox focused on its document technology and document outsourcing business and traded on the NYSE from 1961 to 2021 and on the Nasdaq since 2021. Researchers at Xerox and its Palo Alto Research Center invented several important elements of personal computing, such as the desktop metaphor GUI, the computer mouse and desktop computing. The concepts were adopted by Apple and later Microsoft.

History Xerox was founded in 1906 in Rochester, New York, as Haloid. It manufactured photographic paper and equipment. In 1938, Chester Carlson, a physicist working independently, invented a process for printing images using an electrically charged photoconductor-coated metal plate and dry powder “toner.” However, it would take over 20 years of refinement before the first automated machine to make copies was commercialized, using a document feeder, scanning light, and a rotating drum.

Joseph C. Wilson, credited as the “founder of Xerox”, took over Haloid from his father. He saw the promise of Carlson's invention and, in 1946, signed an agreement to develop it as a commercial product. Wilson remained as President/CEO of Xerox until 1967 and served as chairman until his death in 1971. Looking for a term to differentiate its new system, Haloid hired a Greek scholar at Ohio State University and coined the term xerography from two Greek roots meaning “dry writing.” Haloid changed its name to Haloid Xerox in 1958 and then Xerox in 1961. Before releasing the 914, Xerox tested the market with a prototype hand-operated machine known as the Flat-plate 1385. The 1385 was not a viable copier because of its slow speed. Consequently, it was sold as a platemaker for the Addressograph-Multigraph Multilith 1250 and related sheet-fed offset printing presses in the offset lithography market. It was a higher-quality, commercially available plate camera mounted as a horizontal rostrum camera, complete with photo-flood lighting and a timer. The glass film/plate had been replaced with a selenium-coated aluminum plate. Electrics turned this into a quick-developing and reusable substitute for film. A skilled user could quickly produce paper and metal printing plates. Having started as a supplier to the offset lithography duplicating industry, Xerox then set its sights on capturing some of offset's market share. The 1385 was followed by the first automatic xerographic printer, the Copyflo, in 1955. The Copyflo was a large microfilm printer that could produce positive prints on roll paper from any type of microfilm negative. Following the Copyflo, the process was scaled down to produce the 1824 microfilm printer. At about half the size and weight, this still sizable machine printed onto hand-fed, cut-sheet paper, which was pulled through the process by one of two gripper bars. A scaled-down version of this gripper feed system became the basis for the 813 desktop copier.

Xerox 914

The company came to prominence in 1959 with the introduction of the Xerox 914. The 914, the first plain paper photocopier, was developed by Carlson and John H. Dessauer; it was so popular that by the end of 1961, Xerox had almost $60 million in revenue. The product was sold by an innovative ad campaign showing that even monkeys could make copies at the touch of a button; simplicity became the foundation of Xerox products and user interfaces. Revenues leaped to over $500 million by 1965.

Xeronic Computer Printer

In 1956, Haloid formed a joint venture in the UK with Rank Organisation whose Rank Precision Industries subsidiary was charged with anglicizing the US products. Rank's Precision Industries went on to develop the Xeronic computer printer, and Rank Data Systems was set up to bring the product to market. It used cathode-ray tubes to generate the characters and forms that could be overlaid from microfilm images. Initially, it planned for the Ferranti and AEI computer companies to sell the Xeronic as an on-line peripheral, but due to interface problems, Rank switched to a magnetic tape off-line technique. In 1962, Lyons Computers placed an order for use with its LEO III computer, and the printer was delivered in 1964. It printed 2,888 lines per minute, slower than the target of 5,000 lpm.

1960s

… excerpt ends here. Continue reading the full article.

Illustrations

Xerox illustration
Xerox illustration
Xerox: The Xerox Model D copier, introduced in 1951
The Xerox Model D copier, introduced in 1951
Xerox: The Xerox 914 photocopier, introduced in 1959 and a highly successful product
The Xerox 914 photocopier, introduced in 1959 and a highly successful product
Xerox: Peter James Greaves at the Rank Research Labs 1963: a project to attach a Xeronic printer to the Lyons Leo III
Peter James Greaves at the Rank Research Labs 1963: a project to attach a Xeronic printer to the Lyons Leo III

Worked examples

Example 1 — a first encounter with Xerox

Start with the simplest possible case. Write down what Xerox claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Xerox before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Xerox ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Xerox

In research
Xerox appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Xerox in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Xerox is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1906 establishments in New York (state), American companies established in 1906, Brands that became generic, so understanding it makes those chapters shorter.
In everyday life
Look for Xerox outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Xerox in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Xerox means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Xerox out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Xerox in simple terms?

Xerox Holdings Corporation (, ZEER-oks) is an American corporation that sells printers, digital document products, and services in more than 160 countries. Xerox was the pioneer of the photocopier market, beginning with the introduction of the Xerox 914 in 1959, so much so that the word xerox is co…

Why does Xerox matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Xerox?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Xerox.

Tags

  • 1906 establishments in New York (state)
  • American companies established in 1906
  • Brands that became generic
  • British royal warrant holders
  • Companies based in Norwalk, Connecticut
  • Companies formerly listed on the New York Stock Exchange
  • Companies listed on the Nasdaq
  • Computer companies of the United States
  • Computer hardware companies
  • Computer printer companies
  • Defunct computer systems companies
  • Electronics companies established in 1906

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