Functional Differences Between TWAIN and WIA Scanners

Scanner

: Available

-: Not available

Function	TWAIN	WIA
Scanning on the exposure glass
Scanning continuously using the ADF
Scanning using the ADF (Read-ahead)		^*1
Scanning a specified number of pages in a multi-page original using the ADF	^*2	^*2
Preview		^*3
Performing Auto Detect when scanning on the exposure glass		-
Performing Auto Detect when scanning an original in the ADF (Mixed Sizes)		^*2
Performing Auto Detect when scanning an original in the ADF (Uni-size)		-
Specifying the original weight when scanning from the ADF ^*4		-
Scanning in an application without displaying the user interface screen for scanning

Function

TWAIN

WIA

Scanning on the exposure glass

Scanning continuously using the ADF

Scanning using the ADF (Read-ahead)

^*1

Scanning a specified number of pages in a multi-page original using the ADF

^*2

Preview

^*3

Performing Auto Detect when scanning on the exposure glass

-

Performing Auto Detect when scanning an original in the ADF (Mixed Sizes)

^*2

Performing Auto Detect when scanning an original in the ADF (Uni-size)

-

Specifying the original weight when scanning from the ADF ^*4

-

Scanning in an application without displaying the user interface screen for scanning

*1 In the Read-ahead mode, the machine temporarily stores the scanned image in the internal storage of the machine and then transfers the image to the computer. The WIA scanner operates in the Read-ahead mode at all times.

*2 May not be specified in some applications.

*3 When using the WIA scanner, the changes made to the parameter settings are not applied to the preview. To apply the changes in the preview, perform the preview scan again.

*4 Can be specified when the one-pass duplex scanning ADF is attached to the machine.

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Settings

: Available

-: Not available

Function	TWAIN	WIA
Selecting the driver
Switch units (mm, inches, pixels)		-
Compression		-
Auto deskew		-
Start scanning by pressing [Start] in the scanner ^*1		-
Registering the scan mode		-
Specifying the original size when scanning on the exposure glass		^*2
Specifying the original size when scanning from the ADF
Orientation to set the original		-
Text orientation		-
One-sided scan
Two-sided scan		^*2
Two-sided scan (Top to Top, Top to Bottom)		-
Resolution
Brightness
Contrast
Threshold:		^*2
Duotone (black and white)
256 shades of gray (grayscale)
8 colors		-
16 million colors (full color)
Gamma correction		-
Erase background		-
Filters (filter, dropout color)		-
Color correction (ICM, invert colors)		-
Registering/deleting scan area		-
Specifiable original size (entering the scan area manually)		-
Combine/split		-
Print settings		-

Function

TWAIN

WIA

Selecting the driver

Switch units (mm, inches, pixels)

-

Compression

-

Auto deskew

-

Start scanning by pressing [Start] in the scanner ^*1

-

Registering the scan mode

-

Specifying the original size when scanning on the exposure glass

^*2

Specifying the original size when scanning from the ADF

Orientation to set the original

-

Text orientation

-

One-sided scan

Two-sided scan

^*2

Two-sided scan (Top to Top, Top to Bottom)

-

Resolution

Brightness

Contrast

Threshold:

^*2

Duotone (black and white)

256 shades of gray (grayscale)

8 colors

-

16 million colors (full color)

Gamma correction

-

Erase background

-

Filters (filter, dropout color)

-

Color correction (ICM, invert colors)

-

Registering/deleting scan area

-

Specifiable original size (entering the scan area manually)

-

Combine/split

-

Print settings

-

*1 Press [Start] on the machine to start scanning.

*2 May not be specified in some applications.

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Properties

: Available

-: Not available

Function

TWAIN

WIA

Diagnostics (test scanner)

-

User Code authentication

General user authentication

Specifying the scanner to use

SNMP V3 authentication information

Version information

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