This is my first time posting here, but I thought I'd share my progress if anyone is interested.
So I'm currently trying to get a PG40 cartridge to print. Some interesting specifications of the cartridge:
320 nozzles in two parallel lines. Slightly offset to each other.
30 picoliter droplets.
Runs on 24V for the heating elements and 3.3V for the control lines.
What the cartridge looks like:
![Image](http://jordancomputers.com/images/thumbs/0005923.jpeg)
Pinout:
![Image](http://i.imgur.com/BJiuVzY.jpg)
First thing I did was measure the signals going towards the cartridge. So I slightly dissasembled a pixma ip1200 and soldered a bunch of wires to each spring contact behind the carriage. I only hooked up the black cartridge b.t.w. and completely ignored the c/m/y cartrigde.
For clarification:
![Image](http://i.imgur.com/aC7I5vv.jpg)
Now the fun part. The measurements. All of this was measured with a Logic 16 clone.
![Image](http://i.imgur.com/K7DYe9z.png)
A little zoomed in:
![Image](https://i.imgur.com/jo6Iy7W.png)
Channel discription:
![Image](https://i.imgur.com/9zVcrkh.png)
I grouped the channels together to keep it somewhat organized.
Channel; 14 and 15 was in no way connected to the printhead. I measured the DC motor connected to the carriage so I could discern when it would start printing and know where to look at. At startup, the carriage would move left and right a couple of times to check the encoder ribbon I guess. Then wipe the nozzles to clean them. Next a swipe across the page to print the text. And lastly it cleans itself again two times by wiping across the spunges.
If anyone is interested in looking through the data. Here are the measurements.
https://www.dropbox.com/s/7kdnqt72vxkhj ... cdata?dl=0
More to come.
**EDIT**
Updated the images