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Im in the process of scrapping an old printer, and found out the ICs in the scanner glass aren’t protected. 6
Im in the process of scrapping an old printer, and found out the ICs in the scanner glass aren’t protected.
Im in the process of scrapping an old printer, and found out the ICs in the scanner glass aren’t protected.
I’m scrapping an old printer for parts, and on taking apart the scanner arm (the one under the glass, I wanted the strip light), found that the components under it were completely bare! I get it, they were in a sealed compartment that I tore apart to get to, but still, I wasnt expecting to see a bare IC!
It looks cool!
I couldn’t imagine this actually saving the manufacturer that much. The mold resin being absent is quite interesting.
It seems like a chip-on-board that was meant to be potted ([the black block you often see in consumer products](https://en.wikipedia.org/wiki/Chip_on_board)) but they didn’t.
I suspect that when they bonded the sensor strips to the board, they bonded the readout chips at the same time. But then adding a cover-goop step would’ve run the risk of getting stray goop on the sensors, so they skipped it.
Might be eprom, not eeprom. Intended to be deleted upon opening up the compartment. Maybe copy protection?
The long chips are the image sensor and the square ones are the controllers for them. If you hadn’t take it apart, you could have some fun reading the data with arduino. Someone managed to make a touch screen with these modules.