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This section explains the relationship between resolution and scan size when using the machine as a TWAIN scanner.
To specify the scan area or resolution for the machine you are using as a network TWAIN scanner, see the TWAIN driver Help.
You might not be able to scan large originals if the client computer has insufficient memory, is running other applications, or if its operating system has restriction settings in place.
Certain original types and resolution settings can reduce scanning quality.
If [Binary(Text)] or [Binary(Photo)] is selected in [Col./Grad.:]
The scan size determines the maximum possible resolution.
Refer to the table below for the maximum resolution available for each scan size.
Scan size |
Maximum resolution (dpi) |
|---|---|
Maximum*, 36 × 48 |
600 |
Engineering E |
635 |
A0 × 2, A0 |
652 |
30 × 42 |
720 |
B1 JIS |
753 |
Architecture E |
899 |
A1 × 2, A1 |
923 |
Engineering D |
981 |
B2 JIS |
1065 |
A2, A3, A4, B3 JIS, B4 JIS, Architecture C, Engineering C, Architecture A, Double Letter, Legal, Letter |
1200 |
* The value is valid only when File format converter is installed. When compressing data without File format converter installed, the maximum resolution is limited to 150 dpi.
If [8 Colors] or [8 Colors(Photo)] is selected in [Col./Grad.:]
The scan size determines the maximum possible resolution.
Refer to the table below for the maximum resolution available for each scan size.
Scan size |
Maximum resolution (dpi) |
|---|---|
Maximum*, 36 × 48 |
324 |
Engineering E |
635 |
A0 × 2, A0 |
652 |
30 × 42 |
720 |
B1 JIS |
753 |
Architecture E |
899 |
A1 × 2, A1 |
923 |
Engineering D |
981 |
B2 JIS |
1065 |
A2, A3, A4, B3 JIS, B4 JIS, Architecture C, Engineering C, Architecture A, Double Letter, Legal, Letter |
1200 |
* The value is valid only when File format converter is installed. When compressing data without File format converter installed, the maximum resolution is limited to 150 dpi.
If [Grey Scale] or [16770K colors] is selected in [Col./Grad.:] and data is compressed
The scan size determines the maximum possible resolution.
Refer to the table below for the maximum resolution available for each scan size.
Scan size |
Maximum resolution (dpi) |
|---|---|
Maximum, 36 × 48 |
150 |
Engineering E |
635 |
A0 × 2, A0 |
652 |
30 × 42 |
720 |
B1 JIS |
753 |
Architecture E |
899 |
A1 × 2, A1 |
923 |
Engineering D |
981 |
B2 JIS |
1065 |
A2, A3, A4, B3 JIS, B4 JIS, Architecture C, Engineering C, Architecture A, Double Letter, Legal, Letter |
1200 |
If [Grey Scale] is selected in [Col./Grad.:] and data is not compressed
The scan size determines the maximum possible resolution.
Refer to the table below for the maximum resolution available for each scan size.
Scan size |
Maximum resolution (dpi) |
|
|---|---|---|
Maximum |
198 |
|
A0 × 2 |
520 |
|
36 × 48 |
600 |
|
Engineering E |
635 |
|
A0 |
652 |
|
30 × 42 |
720 |
|
A1 × 2 |
736 |
|
B1 JIS |
753 |
|
Architecture E |
899 |
|
A1 |
923 |
|
Engineering D |
981 |
|
B2 JIS |
1065 |
|
A2, A3, A4, B3 JIS, B4 JIS, Architecture C, Engineering C, Architecture A, Double Letter, Legal, Letter |
1200 |
|
If [16770K colors] is selected in [Col./Grad.:] and data is not compressed
The scan size determines the maximum possible resolution.
Refer to the table below for the maximum resolution available for each scan size.
Scan size |
Maximum resolution (dpi) |
|---|---|
Maximum |
150 |
A0 × 2 |
300 |
36 × 48 |
402 |
A0 |
424 |
A1 × 2 |
425 |
Engineering E |
432 |
30 × 42 |
471 |
B1 JIS |
490 |
Architecture E |
568 |
A1 |
601 |
Engineering D |
611 |
B2 JIS |
693 |
Architecture C |
804 |
A2 |
850 |
Engineering C |
864 |
B3 JIS |
981 |
A3, A4, B4 JIS, Architecture A, Double Letter, Legal, Letter |
1200 |
