WEBVTT - How Inkjet Printers Work

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<v Speaker 1>Stuff from how stuff works dot com where smart happens.

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<v Speaker 1>Hi'm Marshall Brain with today's question, how does an ink

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<v Speaker 1>jet printer work? An inkjet printer is any printer that

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<v Speaker 1>fires extremely small droplets of ink onto paper to create

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<v Speaker 1>an image. If you've ever looked at a piece of

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<v Speaker 1>paper that's come out of an inkjet printer, you know that,

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<v Speaker 1>first of all, the dots are incredibly small, thirty dots

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<v Speaker 1>per millimeter or more, and the dots are positioned very

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<v Speaker 1>precisely on the paper. Different types of inkjet printers form

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<v Speaker 1>their droplets of inc in different ways, but by far

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<v Speaker 1>the most popular technique is the bubble jet. In a

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<v Speaker 1>bubble jet printer, tiny resistors create heat, and this heat

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<v Speaker 1>vaporizes ink to create a bubble. In other words, the

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<v Speaker 1>ink is turning to steam and creating a bubble. In

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<v Speaker 1>the process. The expansion that creates the bubble, causes a

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<v Speaker 1>droplet deform, and then it dejects from the print head.

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<v Speaker 1>A typical bubble jet print head has sixty four or

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<v Speaker 1>eight tiny nozzles, and all of them can fire a

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<v Speaker 1>droplet simultaneously. This allows an inkjet printer to print on

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<v Speaker 1>an entire sheet of paper extremely quickly, even though the

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<v Speaker 1>dots are so small. For more on this and thousands

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