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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.

If [Binary(Text)], [Binary(Photo)], [8 Colors], or [8 Colors(Photo)] is selected in [Col./Grad.:] *

The scan size determines the maximum possible resolution.

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

Scan size and maximum resolution

Scan size

Maximum resolution (dpi)

11×17

600

A3

602

B4

695

Legal (81/2×14)

728

81/2×132/5

761

81/2×13

785

Letter (81/2×11)

828

A4

851

B5

982

A5, B6, A6, 51/2×81/2

1200

* If [Black and white] is specified as the Color format in the WIA driver, the value indicates the resolution.

If [Gray Scale] is selected in [Col./Grad.:] *

The scan size determines the maximum possible resolution.

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

Scan size and maximum resolution

Scan size

Maximum resolution (dpi)

11×17

600

A3

600

B4

693

Legal (81/2×14)

728

81/2×132/5

761

81/2×13

785

Letter (81/2×11)

825

A4

848

B5

979

A5, B6, A6, 51/2×81/2

1200

* If [Black and white] is specified as the Color format in the WIA driver, the value indicates the resolution.

If [16770K colors] is selected in [Col./Grad.:] *

The scan size determines the maximum possible resolution.

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

Scan size and maximum resolution

Scan size

Maximum resolution (dpi)

11×17

600

A3

600

B4

692

Legal (81/2×14)

728

81/2×132/5

761

81/2×13

785

Letter (81/2×11)

825

A4

848

B5

979

A5, B6, A6, 51/2×81/2

1200

* If [Black and white] is specified as the Color format in the WIA driver, the value indicates the resolution.

Note

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