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Canon Laser printer i-sense MF633C toner 045H chips protocol
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Wiljan:
Hi
After being tired of clocked heads in several Inkjet printer after irregular use, I bought a Canon Laser printer MF633C which works very well.
I comes with a starter kit of toner Black, Cyan, Magenta, Yellow
Now it starts nagging that the Toner needs to be replaced and that is based on a counter on numbers of print in BW, Color and BW +Color.
I know or sure it has not been printing much color... mayby some logo on now and then so I pretty confiden that there are a lot of toner left.
On each Toner there are a small chip (2pin) and I can read on the net that the printer reads those chips and the after a print save a new counter number back in the chip to keep track of the toner (so the numbers are NOT saved in the Printer but on each toner unit.
I can see that it's possible to buy chip on Ebay saying the toner are brand new (always), but I then was wondering how the protocol was working and I have not found any info yet on the web.
So I have soldered 2 wires on the Black Toner and hooked a scope onto it 2 see what's going on.
Each time I print a page then when the print are done you get a beep from the printer and right after there are some data traffic.
It I measure Ohm in power off the 1 pin have 1K to ground on a USB chassis in the printer and the other pin about 15K.
I have taken a few photos of the Scope showing the idle level are about 0v and the it rise to about 3 volt and have data to 5 volt
1-wire normal use the whole 0-5 volt
So what kind of data is this?
Are the protocol know public?
I would like to add in a small PIC or so to the the printer that all the tones are full, so I can wait to change the toner until it's actually used.
I you continue printing you have to "accept" the Toner are in a low status and quality are nit guarantied.
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