# Xerox Corp — Patents explained on PatentBrief

Xerox Corp has 2 landmark patents explained in plain English on PatentBrief.

- [How Multiple Computers Share a Network Cable Without Crashing](https://patentbrief.org/patent/us/4063220/ethernet-packet-network) — granted 1977
  This patent describes how multiple computers can share a single communication cable by listening for other transmissions and stopping their own if a collision occurs, then trying again later.
- [How Laser Printers Use Rotating Mirrors to Write Information](https://patentbrief.org/patent/us/3867571/laser-printer-starkweather) — granted 1975
  A 1972 Xerox patent describing how to use a spinning mirror to scan a laser beam across a page, adjusting the speed of the data to keep the image sharp.

**Full profile:** https://patentbrief.org/company/xerox-corp

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_Source: PatentBrief — https://patentbrief.org. Plain-English explanations of US patents._