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This sounds like a damaged printhead. The nozzle test will show it in the text below the colors. Here in Germany I got a MX925 serviced by Canon with a new printhead for 89€ including cost for sending. That’s a fair price. So ask Canon support for repair. Cheers, Maximilian

He moved to another server and a lot of problems. Search vor Keith Cooper on YouTube. You will find a lot Videos for the ET-8850 from him.

If I were you, I would go up to the ET-8850. For more information have a look at Keith Coopers site at Northlight Images.

Here is a link to MG2100 series, MG3100 series simplified service manual. MG2140/MG2150/MG3140/MG3150 MG2100 and MG3100 SM

Yes you are right. I checked this with a IP2850 a while ago. You get access to some things, but you can't do much. Maybe there are some tricks for Canon service people we don't know.

I can't see artifacts. At the numbers it may seem like this. What software are you using and what screen? Here is a png made on a old gaming screen with windows viewer and with 500% with Photoshop. The gray pixels are no artifacts. That is how the pattern is designed. This file is not ment to...

Now on Windows: Did a left klick and the file is shown in Bart's dropbox. Then I choosed "Direkt herunterladen" after klicking on the down arrow. Both files are as TIF in my download folder. I don't know whats different on your machine. Cheers, Maximilian

I don’t know if it works with this printer. Open the lid and press the resume button for more than 15 seconds. Maybe the printhead moves to the changing position.

I am not on Windows at the moment. What happens if you just double klick?

Does your preprinted page have color on the leading edge or is there some white space? I don’t know how the leading edge is detected. You can open the printer during printing and watch what happens when.

Just downloaded it with my iPad as a TIF. First I saved it to my own Dropbox.

When I open the files they are in TIF format not jpg.

There is another interesting article at LuLa A new Printer/Media Resolution test target (Read 26602 times)

If you want to deep dive in physics and theorie: Fundamentals of Inkjet Printing: The Science of Inkjet and Droplets On google books a view sites can be read.

I will check tomorrow. It is late now. I remember a scientific study how small the droplets can be. The end is at 1 pl because then other effects of dynamics play a role for such small things. Like the velocity of the head, the air moved between nozzle opening and substrate, not enough dye for...

A digital picture can never have DPI. It only has pixels. Depending on the output you get PPI. Normally this refers only for monitors, because this is a output device which shows pixels. And depending on the pixel density the file is shown larger or smaller at 100% view. The same happens with a...

This means, that for every inch of the printed file you have 1440 pixels. Your provided pictures are very small. Printing them with 2400/1200 PPI to the printer gives with a 1 to 1 relation a 1“ wide print, as you say with 1 pixel per dot. Everything else is a recalculation of the file for the...

So you alter the image during the printing process. Did you ever check how the image looks after enlarging it, but not printed at 100% view. I wonder whether the problems are part of the enlargement.

As I don’t know, what is an aliased image? What are the native PPI of your file? If PPI and DPI differs, a recalculation ist done. If your picture has eg 720 PPI with wanted sizes, than a printer cannot put more information in it. With printing on higher DPI, you tell the driver to use more...

Did you check your printer queue? It should be empty. How did you install the printer? By adding it with the plus sign in printers and scanners or by installing with the driver from the Epson site? You should always use the provided driver and not manually in system preferences. Take care, that...