For example, to print on A4 size paper, the following is required.

1. The original TeX document is created in the A4 size.

2. Set A4 as the paper size in the [Paper] property sheet.

3. Set A4 as the paper size in [Setup] in the print dialog.

When the sizes of the printed characters are irregular or the sizes do not fit even with the A4 setting, the dpi used by dviout and the printer resolution may not match (cf. Setting the Resolution).
This is the case when there appears the warning asking "Use driver resolution?".