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Printer and Photocopier Troubleshooting and Repair Collection
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Samuel M. Goldwasser
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Response Times of Resistance Heater Elements
The ink drops that make up the 'image' on the paper from an ink jet printer are expelled by microscopic resistance (thin film or the like) heaters with response times in the 10s of microseconds if I recall correctly. When living in the macro world, it is often counterintuitive to realize that a resistance element can have such a fast thermal response.
Now you can achieve brilliant resolution of up to 4,800 x 1,200 dpi when printing on photo paper.
The X85 also features up to 2,400 x 1,200 dpi in black and color on all paper types, offering the option
of generating vibrant, photo-quality output on other media, such as card stock, transparencies, and iron-on transfers.
The X85 prints up to 12 pages per minute (ppm) in black and up to 6 ppm in color, and supports both
Windows and Macintosh platforms.
Read more...
The trick is that a lot of the energy that you pump into the resistor leaves
the printhead with the fired dot. One way to detect Out_of_Ink is to mount a
thermistor on the printhead and watch for a sudden rise in temperature as you
are firing.
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Why are the inkjet primers RBY (red, blue, and yellow)
Inkjet Printer Ink
How Laser Printer Works (summary)
Cleaning and Handling of Photosensitive Drums
Laser Diodes in Laser Printers
Types of toner
If I put wrong type of toner
How Dot Matrix Printer Works