How to create user defined paper sizes - Canon, Lightroom, Windows
For Red River Paper greeting cards, scrapbook 12x12 sheets, panorama printing, and other special projects, you need to define a custom paper size in the Canon printer properties. Below are instructions for setting a custom paper size in Lightroom.
![Print Mod Print Mod](/blogimages/print-mod_1559567659.png)
After completing your edits, go to the Print module.
![Page Setup Button Page Setup Button](/blogimages/page-setup-button_1559567682.png)
Now click the Page Setup button. On the lower left of your screen.
![Canon Print Setup Canon Print Setup](/blogimages/print-setup-canon_1559572575.png)
The Print Setup dialog appears. Choose your printer and click Properties. This will lanuch the printer properties dialog
![Canon Print Properties Page Setup Canon Print Properties Page Setup](/blogimages/print-properties-canon-page-setup_1559572607.png)
1. Click on the Page Setup tab.
2. Verify that "Normal-size" is selected in Page Layout. Borderless custom sizes are not an option.
3. Click on the Page Size drop down menu.
![Canon Print Properties Choose Custom Size Canon Print Properties Choose Custom Size](/blogimages/print-properties-canon-choose-custom_1559572647.png)
Scroll to the bottom of the paper size listing and choose "Custom..."
![Canon Print Properties Define Custom Canon Print Properties Define Custom](/blogimages/print-properties-canon-define-custom_1559572841.png)
Enter the paper's width and height.
ALWAYS set the smaller sheet dimension to width and larger to height.
Example - on a 7x10 greeting card 7 is the width and 10 the height regardless of the print orientation.
When you are done click OK.
Canon sets the maximum paper height to 26.61" on most desktop models. This typically translates into a maximum print length of 25.8".
Canon printers do not remember custom sizes. You will do this process each time you have a new size or print job.
Once you create a custom size, set media type, print quality, and color management click OK to exit the printer properties.
Going Back to Lightroom
![Canon Print Setup Back to Left Right Canon Print Setup Back to Left Right](/blogimages/print-setup-canon-back-to-lr_1559573190.png)
You will be back you will again see the Print Setup dialog. Notice that paper size now says "Custom..." Click OK go exit to Lightroom.
![Cell Margins Cell Margins](/blogimages/margins-cell_1559568021.png)
You are now back in the Lightroom print module.
Set the cell width and height to their maximum.
You will normally set margins to their minimum value. Notice that they cannot be set to zero. This is because you are using a custom size and printers have a minimum printable margin.
Once complete, Lightroom should display a preview of your image set properly onto the custom size.
![Print Mod Canon Ready Print Print Mod Canon Ready Print](/blogimages/print-mod-canon-ready-print_1559573386.png)
Canon Printable Area Note - The leading and trailing edge margins - the area that cannot be printed - are not even. Canon makes the trailing margin larger to assist with paper handling and to avoid print head strikes. This setting cannot be modified while using custom sizes.
To ensure even margins, make all margins slightly larger to match the trailing edge.
Last updated: December 07, 2020