Paper Size

The Paper Size selection includes a large selection of standard paper sizes. If you want, you can create a custom size ranging from 88.9 × 127.0 mm (3.5 × 5 in.) to 215.9 × 355.6 mm (8.5 × 14 in.) or 287 × 431.8 mm (11.3 × 17 in) (Available on A3 models). You can also choose the borderless setting for specific paper sizes. From the drop-down list, choose the Paper Size you are using.
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You can create a custom size by choosing User Defined. Specify the Width and Height values, and enter any name you want for this custom size. Choose the correct paper thickness to improve the quality of your output.
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To do borderless printing

From the Paper Size pull down list choose the size of paper you want to print such as A4 (Borderless) or A3 (Borderless) (Available on A3 models).
Note Note
For A3 models
If white horizontal lines appear on your prints when you use A3 paper, your paper may be long grain paper. Choose A3 (Long Grain) to avoid the horizontal lines. Consult the paper packaging or paper manufacturer for paper specifications.