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Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4061
NSFW, NSF.. etc ....
FWIW I have had the mother of all paper jams on an Epson R600 before, requiring the services of:- a pair of locking hemostats, tweezers and a fine screwdriver to remove. And required cleaning the rollers with IPA before it deigned to print again.
my best one was on an hp all-in-one. someone had dropped a little plastic divider from something in there, that was an (insert invocation of your choice) to remove.
once found a Kyocera laser printer someone had chucked because of paper jams, with full cartridge. Used that for a couple of years before it went to Silicon Heaven (or Hell, if Epson/HP/etc)
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4061
i have half a dozen hp all in one printers here.
interestingly they have parts which are truly cool for making Repraps etc, such as the actuators and precision cut bearings.
anyone have a use?
also have an epson label printer with thermal AND dot matrix modules, seems a shame to trash it. PM me if anyone has a use. includes steppers galore... Its a bit heavy at 8 kilos but most of that is the casing.
Registered Member #2099
Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716
Conundrum wrote ... ... anyone have a use? ... includes steppers galore...
Ah yes, how to make a stepper motor turn without fancy electronics? Typically you need two bipolar or four unipolar pulse trains, 90 degrees out of phase.
Well, one way to create such a signal is ... use another stepper motor as a generator!
This demo has 2 steppers and a connectorized 5-wire cable, all pulled from a printer. No soldering after they left the factory. When you turn the pinion of big motor by hand, rapidly enough, the small motor turns by the same angle.
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(OT) Printers from Hell
