Hi Damask55,
Since you have upgraded your operating system, I would like to have you reset the printing system on your Mac, then reinstall the drivers to see if this will resolve the issue. To reset the printer system, please follow these steps:
1. Choose Apple menu > System Preferences, then click Printers & Scanners.
2. Hold down the Control key as you click in the list at the left, then choose “Reset printing system” from the menu that appears. After you reset the printing system, the list of printers in Printers & Scanners preferences should be empty. If your printer is still listed on the left select your printer and then click the minus (-) button to delete it.
3. Restart your Mac.
Next, we will want to download the latest drivers for the printer from the Canon USA website. Please click here to go to the PIXMA iP100 Drivers and Downloads page. Once on the initial download page for your model, please do the following:
1. Verify that the operating system detected in the "OPERATING SYSTEM" field is correct, and if it is not, please click the drop-down menu to select your operating system. Please note that you may need to scroll up or down in the list to select your operating system.
2. Next, please click on the box labeled "DRIVERS" next to the red box labeled "RECOMMENDED DOWNLOADS", locate the CUPS file, then click the SELECT button to the right of the filename. When you do, a dark gray DOWNLOAD button will appear; below that, a checkbox will be shown asking you to agree to the terms of the disclaimer to continue with the download. Please click in that checkbox to agree to the terms. When you do, the dark gray DOWNLOAD button will turn red. Please click on the now red DOWNLOAD button; the file will start downloading. The time for the download process may vary depending on the speed of your Internet connection and the size of the file being downloaded.
Once you have downloaded the CUPS driver file from the website, please double-click on it and follow the prompts to install it on your Mac. If you still experience difficulty printing after installing the latest drivers, we ask that you please call 1-866-261-9362, Monday - Friday 10:00 a.m. - 10:00 p.m. ET (excluding holidays) for further assistance. A Canon technical support representative will be happy to help. There is no charge for this call.
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