The Color LaserWriter supports printing on US Letter, Legal, A4, and B5 paper sizes. The US version of the Color LaserWriter ships with a 250-sheet US Letter cassette. Legal, A4, and B5 paper sizes can be fed using the included 100 sheet capacity multi-purpose tray. An optional 250-sheet universal cassette tray (M3874G/A) that supports US Letter, Legal, A4, and B5 can be purchased separately. The optional 250-sheet stackable feeder (M3762G/A) includes the universal cassette tray. Full bleed and tabloid printing are not supported by the Color LaserWriter 12/600 PS printer.
The following tables lists the supported paper sizes and their imageable areas when using the LaserWriter 8.3.x drivers. Other paper sizes are not supported due to the design characteristics of the print engine. All of the values are listed in inches.
Paper
Size | Standard Imageable Area | Standard Margins |
| Width | Height | Top | Bottom | Left | Right |
| Letter | 7.67 | 10.14 | .43 | .43 | .43 | .40 |
| Legal | 6.72 | 12.50 | .75 | .75 | .89 | .89 |
| A4 | 7.47 | 10.84 | .42 | .43 | .40 | .39 |
| B5 | 6.79 | 9.62 | .32 | .19 | .19 | .19 |
Paper
Size | Maximum Imageable Area | Maximum Margins |
| Width | Height | Top | Bottom | Left | Right |
| Letter | 8.32 | 10.49 | .32 | .19 | .19 | .19 |
| Legal | 8.32 | 13.49 | .32 | .19 | .19 | .19 |
| A4 | 7.89 | 11.18 | .32 | .19 | .19 | .19 |
| B5 | NA | NA | NA | NA | NA | NA |
Note: Maximum image size will vary depending upon the driver and printer in use. To check maximum imageable area for a particular configuration, open Page Setup and click on the image of the dog.