When Using the TWAIN Driver or the WIA Driver

This section explains the relationship between resolution and scan size when using the TWAIN driver or the WIA driver with the machine.

To specify the scan area or resolution on the machine you are using as a network TWAIN scanner directly, see the TWAIN driver Help.

The scan size determines the maximum possible resolution.

See the table below for the maximum resolution available for each scan size.

Gray Scale
Scan size	Width (mm)	Length (mm)	Maximum resolution (dpi)
Maximum	297	432	600
A3	297	420	600
A4	210	297	848
A5	148	210	1200
A6^*1	105	148	1200
B4 JIS (Japanese Industrial Standard)	257	364	693
B5 JIS	182	257	979
B6 JIS	128	182	1200
11 × 17 in	279.4	431.4	600
8¹/₂ × 14 in	215.9	355.6	728
8¹/₂ × 11 in	215.9	279.4	825
5¹/₂ × 8¹/₂in	139.7	215.9	1200
8¹/₂ × 13 in	215.9	330.2	785
8¹/₂ × 13²/₅in	215.9	340.36	761

*1 When the ADF is used, A6 cannot be scanned.

Full Color
Scan size	Width (mm)	Length (mm)	Maximum resolution (dpi)
Maximum	297	432	591
A3	297	420	600
A4	210	297	848
A5	148	210	1200
A6^*1	105	148	1200
B4 JIS	257	364	692
B5 JIS	182	257	979
B6 JIS	128	182	1200
11 × 17 in	279.4	431.4	600
8¹/₂ × 14 in	215.9	355.6	728
8¹/₂ × 11 in	215.9	279.4	825
5¹/₂ × 8¹/₂in	139.7	215.9	1200
8¹/₂ × 13 in	215.9	330.2	785
8¹/₂ × 13²/₅in	215.9	340.36	761

*1 When the ADF is used, A6 cannot be scanned.

Binary(Text)/Binary(Photo)/8 Colors(Text)/8 Colors(Photo)
Scan size	Width (mm)	Length (mm)	Maximum resolution (dpi)
Maximum	297	432	600
A3	297	420	602
A4	210	297	851
A5	148	210	1200
A6^*1	105	148	1200
B4 JIS	257	364	695
B5 JIS	182	257	982
B6 JIS	128	182	1200
11 × 17 in	279.4	431.4	600
8¹/₂ × 14 in	215.9	355.6	728
8¹/₂ × 11 in	215.9	279.4	828
5¹/₂ × 8¹/₂in	139.7	215.9	1200
8¹/₂ × 13 in	215.9	330.2	785
8¹/₂ × 13²/₅in	215.9	340.36	761

*1 When the ADF is used, A6 cannot be scanned.