topic Re: printing issue, Pixma Pro 100 in Professional Photo Printers

PIXMA PRO-100 Changing DPI changes print size

pixma100 — Tue, 04 Mar 2025 15:04:34 GMT

I am trying to print photos using my Canon Pixma-100. I used to have the printer installed on a former computer, but that was years ago. This time around, I merely downloaded the current printer driver from Canon's site.

Prior to printing I am selecting (for example) a width (7.0) and and height (4.692) for the image size, which results in a PPI of 1303 in my case (I'm using GIMP to do the processing, and I am sending the print job to the Canon from there). When I print the photo at 300x300 dpi it prints very small on the paper (~3.5" x 2.25"). When I print at 600x600 dpi it seems to prints at the correct dimensions (~7" x 4.7"). When I print at 1200x1200 dpi it prints only a small portion of the image (very large), since the majority of the image would appear off of the page.

In each case, it would seem that the image should actually print at 7.0" x 4.692" since that is what I selected...yet, these different sizes are the result. It appears that the DPI setting selected in the Print option is dictating the image size, rather than the Print Size that I have selected for the file.

It might be the case that the printer driver is overriding the Print Size. When I select the printer via my Mac (System Settings-->Printers and Scanners-->Canon Pro 100 Series) there is no option anywhere to un/check a "Fit to Page" or "Scale to Fit" option, which I thought might be the issue. How can I see/change this option?

Does anyone know how I can get images to print at the size I've selected, given my current setup?

Thanks in advance for any help or ideas, I appreciate it.

Re: printing issue, Pixma Pro 100

jrhoffman75 — Mon, 03 Mar 2025 13:38:28 GMT

@pixma100 wrote:

I am trying to print photos using my Canon Pixma-100. I used to have the printer installed on a former computer, but that was years ago. This time around, I merely downloaded the current printer driver from Canon's site.

Prior to printing I am selecting (for example) a width (7.0) and and height (4.692) for the image size, which results in a PPI of 1303 in my case (I'm using GIMP to do the processing, and I am sending the print job to the Canon from there). When I print the photo at 300x300 dpi it prints very small on the paper (~3.5" x 2.25"). When I print at 600x600 dpi it seems to prints at the correct dimensions (~7" x 4.7"). When I print at 1200x1200 dpi it prints only a small portion of the image (very large), since the majority of the image would appear off of the page.

In each case, it would seem that the image should actually print at 7.0" x 4.692" since that is what I selected...yet, these different sizes are the result. It appears that the DPI setting selected in the Print option is dictating the image size, rather than the Print Size that I have selected for the file.

It might be the case that the printer driver is overriding the Print Size. When I select the printer via my Mac (System Settings-->Printers and Scanners-->Canon Pro 100 Series) there is no option anywhere to un/check a "Fit to Page" or "Scale to Fit" option, which I thought might be the issue. How can I see/change this option?

Does anyone know how I can get images to print at the size I've selected, given my current setup?

Thanks in advance for any help or ideas, I appreciate it.

Verify that you are using the Canon IJ Series driver and not the Apple AirPrint driver.

Re: printing issue, Pixma Pro 100

jrhoffman75 — Mon, 03 Mar 2025 13:41:56 GMT

Re: printing issue, Pixma Pro 100

pixma100 — Mon, 03 Mar 2025 15:19:24 GMT

Thanks for the reply. Yes, that's the one I'm using; same version as in your screenshot.

Re: printing issue, Pixma Pro 100

jrhoffman75 — Mon, 03 Mar 2025 15:22:25 GMT

I can’t help with Gimp. Sorry. Have you tried other software; maybe Canon DPP?

Re: printing issue, Pixma Pro 100

pixma100 — Mon, 03 Mar 2025 15:26:45 GMT

No, I have not tried other software. Is there a way, given the current configuration I have (i.e., without installing and using additional software just to print) that I can access/change the options for the printer interface, such as "scale to fit" etc. (which may or may not resolve my issue)? Thanks.

Re: printing issue, Pixma Pro 100

jrhoffman75 — Mon, 03 Mar 2025 17:24:19 GMT

I ran a test using Lightroom Classic with my Pro-100 as the specified printer.

Changing the print resolution from 300 to 1200 did not change the size of the printed image but did change the clarity of detail in the print. You can see that the dimensions shown in LrC didn't change.

Maybe someone familiar with printing from GIMP will chime in.

Re: printing issue, Pixma Pro 100

pixma100 — Mon, 03 Mar 2025 17:36:52 GMT

Thanks for performing the test.

The result you got (changing the clarity of the printed image, not changing the printed size) is exactly what I would expect to happen (but it is not happening for me...). Aside from something GIMP-specific, is there any setting with the printer that you can imagine may be responsible for my outcome (printed image dimensions being affected by selected DPI setting)?

Thanks again for your continued help.

Re: printing issue, Pixma Pro 100

jrhoffman75 — Mon, 03 Mar 2025 17:43:58 GMT

I don't. Maybe register your product (if you haven't already) and give Canon support a call.

Re: printing issue, Pixma Pro 100

Stephen — Mon, 03 Mar 2025 18:53:02 GMT

Right now, registration isn't required for the PIXMA PRO-100, even though it's always a good idea! You can verify registration at https://canon.us/account, then call our team at 1-800-OK-CANON (800-652-2666). Mondays are busier than usual, so there may be a wait today.

Re: printing issue, Pixma Pro 100

pixma100 — Tue, 04 Mar 2025 18:12:38 GMT

Thanks, everyone, for the input.

I did speak to Canon and the Pixma helper had no solution for my issues.

I also downloaded and ran Digital Photo Professional in order to print the images (.jpg and .tif files) from there (rather than from within Gimp). DPP would not even open my images (which, by the way, I can open and print from all other software I've tried...though with the strange image resizing problem that began this fiasco).

I then spoke to Canon DPP support, who could not figure out why DPP will not open my jpg and tif files.

Very unsatisfying so far...

Re: PIXMA PRO-100 Changing DPI changes print size

jrhoffman75 — Tue, 04 Mar 2025 18:20:28 GMT

@pixma100 wrote:

I am trying to print photos using my Canon Pixma-100. I used to have the printer installed on a former computer, but that was years ago. This time around, I merely downloaded the current printer driver from Canon's site.

Prior to printing I am selecting (for example) a width (7.0) and and height (4.692) for the image size, which results in a PPI of 1303 in my case (I'm using GIMP to do the processing, and I am sending the print job to the Canon from there). When I print the photo at 300x300 dpi it prints very small on the paper (~3.5" x 2.25"). When I print at 600x600 dpi it seems to prints at the correct dimensions (~7" x 4.7"). When I print at 1200x1200 dpi it prints only a small portion of the image (very large), since the majority of the image would appear off of the page.

In each case, it would seem that the image should actually print at 7.0" x 4.692" since that is what I selected...yet, these different sizes are the result. It appears that the DPI setting selected in the Print option is dictating the image size, rather than the Print Size that I have selected for the file.

It might be the case that the printer driver is overriding the Print Size. When I select the printer via my Mac (System Settings-->Printers and Scanners-->Canon Pro 100 Series) there is no option anywhere to un/check a "Fit to Page" or "Scale to Fit" option, which I thought might be the issue. How can I see/change this option?

Does anyone know how I can get images to print at the size I've selected, given my current setup?

Thanks in advance for any help or ideas, I appreciate it.

It has been discussed on here a while back that GIMP does some things to TIFF images that affects DPP opening them. DPP is primarily a RAW editor but will edit Canon/DPP created JPEGS and TIFFs.

I sometimes get ? on an image if it is a random image saved from the Internet.