Brother FAX-2940 Software User's Manual page 44

Scanning (For FAX-2940)
Note
The Contrast setting is only available when Grey (Error Diffusion) or True Grey is chosen.
When scanning photographs or other images for use in a word processor or other graphics application, try
different settings for the contrast and resolution to see which setting best suits your needs.
Document Size
Choose one of the following sizes:
 A4 210 x 297 mm (8.3 x 11.7 in)
 JIS B5 182 x 257 mm (7.2 x 10.1 in)
 JIS B6 128 x 182 mm (5 x 7.2 in)
 Letter 215.9 x 279.4 mm (8 1/2 x 11 in)
 Legal 215.9 x 355.6 mm (8 1/2 x 14 in)
 A5 148 x 210 mm (5.8 x 8.3 in)
 A6 105 x 148 mm (4.1 x 5.8 in)
Executive 184.1 x 266.7 mm (7 1/4 x 10 1/2 in)

10 x 15 cm (4 x 6 in)

 13 x 20cm (5 x 8 in)
 9 x 13 cm (3.5 x 5 in)
 13 x 18 cm (5 x 7 in)
 Postcard 1 100 x 148 mm (3.9 x 5.8 in)
 Postcard 2 (Double) 148 x 200 mm (5.8 x 7.9 in)
 Custom
If you choose Custom as the size, the Custom Document Size dialog box appears.
Enter the Custom Document Size Name, Width and Height for the document.
You can choose 'mm' or 'inch' as the unit for Width and Height.
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