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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.

Exposure glass

The scan size determines the maximum possible resolution.

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

Full Color/Grey Scale

Scan size

Maximum resolution

(dpi)

maximum

600

A4

617

A5

875

A6

1200

B5

712

B6

1012

LG (81/2 × 14 in)

600

LT (81/2 × 11 in)

600

51/2 × 81/2 in

928

81/2 × 13 in

600

81/2 × 132/5 in

600

Binary(Text)/Binary(Photo)/8 Colors(Text)/8 Colors(Photo)

Scan size

Maximum resolution

(dpi)

maximum

600

A4

619

B5

714

A5

878

B6

1016

A6

1200

LG (81/2 × 14 in)

600

LT (81/2 × 11 in)

602

51/2 × 81/2 in

930

81/2 × 13 in

602

81/2 × 132/5 in

602

ADF

The scan size determines the maximum possible resolution.

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

Scan size

Maximum resolution

(dpi)

maximum

600

A4

600

A5

600

A6

600

B5

600

B6

600

LG (81/2 × 14 in)

600

LT (81/2 × 11 in)

600

51/2 × 81/2 in

600

81/2 × 13 in

600

81/2 × 132/5 in

600

Note

  • Certain original types and resolution settings can reduce scanning quality.