LASER exposer efforts Vid#1 - LSU disassembly
My efforts to build UV PCB exposer, based on LASER printer scanning unit, Video#1 - LSU from LaserJet 1000 series disassembly. Inspiration: https://wiki.das-labor.org/w/LaserExposer The good: The polygon mirror has silver surface, so no filtering is performed. The bad: 1. The lens are glued to the plastic base so I need to cut 'em; 2. The polygon mirror driver (AN8248SB) does not have available datasheet and does not accept external synchro signal so I need to figure a way to stabilize the motor speed. I've found some reverse engineered data from a russian site: http://al-tm.ru/stati/stati-po-printeram/22 - the signal /DEC when high enables the rotation; The signal /ACC remains mystery... Video#2 is here: https://youtu.be/h0uE4fhPj20
My efforts to build UV PCB exposer, based on LASER printer scanning unit, Video#1 - LSU from LaserJet 1000 series disassembly. Inspiration: https://wiki.das-labor.org/w/LaserExposer The good: The polygon mirror has silver surface, so no filtering is performed. The bad: 1. The lens are glued to the plastic base so I need to cut 'em; 2. The polygon mirror driver (AN8248SB) does not have available datasheet and does not accept external synchro signal so I need to figure a way to stabilize the motor speed. I've found some reverse engineered data from a russian site: http://al-tm.ru/stati/stati-po-printeram/22 - the signal /DEC when high enables the rotation; The signal /ACC remains mystery... Video#2 is here: https://youtu.be/h0uE4fhPj20