Main trade-off
Ricoh ScanSnap iX2400
Its USB connection is to a computer. It provides neither a direct flash-drive destination nor a TWAIN driver.
Head-to-head
Choose iX2400 for one computer, one filing workflow and a physical start button. Choose ES-590W for phone access, direct saving to a supported USB drive or a TWAIN-compatible desktop application. Epson cannot write directly to a USB device with password or encryption settings. If protected removable storage is mandatory, keep a computer in the workflow rather than buying it for that shortcut.
Before you choose
Epson can put a scan on a USB drive without opening the family computer. That is useful when forms need to leave the house or move between machines. Its direct port rejects devices with password or encryption settings, though. If those documents must stay on protected removable storage, use an approved computer workflow to handle that storage. Do not switch protection off for convenience. iX2400 already depends on the computer, so Epson’s stand-alone advantage becomes smaller when that computer is required by your filing rules anyway.
What this is based on
Epson explicitly excludes security-enabled and dedicated-driver USB devices, with a 2 TB supported-format limit. ScanSnap sends scans through a computer. No security guarantee is assigned to either workflow.
Main trade-off
Its USB connection is to a computer. It provides neither a direct flash-drive destination nor a TWAIN driver.
Main trade-off
Direct USB saving excludes password-protected, encrypted and dedicated-driver devices. A supported format and capacity are also required.


Compare iX2400 and ES-590W for family paperwork and home-office filing. Check app compatibility, computer-free USB saving and the encrypted-drive restriction.
Both are desktop duplex scanners with a 100-sheet feeder and a 45 ppm headline. They meet at the point where someone wants to clear household or home-office paperwork in batches, then decide how those files reach the next person or application.
Winner by situation
ScanSnap concentrates on that USB workflow.
Epson supplies TWAIN compatibility. Verify the application and operating-system requirements.
Epson supports direct saving, with format, capacity and security-device restrictions.
ScanSnap has no direct-drive workflow and Epson excludes encryption-enabled devices.
What matters in practice
Epson can put a scan on a USB drive without opening the family computer. That is useful when forms need to leave the house or move between machines. Its direct port rejects devices with password or encryption settings, though. If those documents must stay on protected removable storage, use an approved computer workflow to handle that storage. Do not switch protection off for convenience. iX2400 already depends on the computer, so Epson’s stand-alone advantage becomes smaller when that computer is required by your filing rules anyway.
Epson explicitly excludes security-enabled and dedicated-driver USB devices, with a 2 TB supported-format limit. ScanSnap sends scans through a computer. No security guarantee is assigned to either workflow.
A home business may want the same scanner for school paperwork and records entered through an existing desktop application. If that application needs a TWAIN scanner, Epson is the relevant starting point. iX2400 uses ScanSnap Home, so you would need a supported file-import route instead of expecting the application to control the scanner directly. Check that workflow before buying. Epson’s computer-free button does not remove the computer needed to run the business application, and TWAIN support alone does not guarantee every application feature.
Documented driver difference crossed with a conditional application requirement. Import support and exact operating-system compatibility must be verified in the receiving software.
Both advertise 45 pages per minute, but Ricoh specifies A4 color at 300 dpi and Epson specifies Letter at 300 dpi over USB. Those numbers do not prove equal completion time over Wi-Fi or after OCR. A household using one PC may gain more from a repeatable one-button routine. A household passing the scanner between phones and computers may gain more from Epson’s connection choices. If receipts interrupt the stacks, remember that leaving Ricoh’s Receipt Guide attached reduces its A4 load limit to 50 sheets. The workflow changes before any theoretical speed comparison does.
Paper size and connection qualifiers are preserved. Ricoh guide capacity is explicit. No throughput ratio or measured time saving is calculated.

Ricoh ScanSnap, iX2400
One computer receives your scans and ScanSnap Home fits your filing process.

Epson, ES-590W
You need a TWAIN scanning route in a compatible application, subject to checking its driver requirements.
Meaningful differences
| What changes | Ricoh ScanSnap iX2400 | Epson ES-590W | Why it matters |
|---|---|---|---|
| Daily control | One-button computer workflow | 4.3-inch touchscreen plus computer and mobile routes | A fixed filing station needs less destination selection than a scanner shared among devices. |
| Direct USB-drive saving | No, USB host connection | Supported, up to 2 TB in FAT, FAT32 or exFAT | Check the drive before treating computer-free saving as the buying reason. |
| Protected USB devices | Files go through the computer workflow | Password, encryption and dedicated-driver devices excluded | Do not remove required protection just to make the scanner accept a drive. |
| Existing scanning software | ScanSnap Home, no TWAIN/ISIS | TWAIN-compatible driver | A program’s own Scan button may depend on this driver rather than feeder speed. |
| Rated feeding | 45 ppm, A4 color at 300 dpi | 45 ppm, Letter at 300 dpi over USB | Different paper sizes and test conditions prevent a measured speed tie from being inferred. |
| Small receipts between stacks | Receipt Guide, with a 50-sheet A4 limit while attached | 100-sheet ADF with mixed-size handling | Follow each model’s loading rules. Mixed-size support does not make every stack safe to feed unsorted. |
What you give up
Recommendation switch
Choose Ricoh ScanSnap iX2400. A simple USB workflow covers the actual destination.
Choose Epson ES-590W. Epson provides those routes, with the drive restrictions kept intact.
Choose neither. Neither documented route meets that combination without a computer.
What matters in practice
You want paperwork off the dining table without opening a computer, but the documents also need to stay protected and work in your existing software. Computer-free saving and application integration solve different parts of that job.
What the facts say
Useful conclusions from the current document scanners comparison, followed by the checked facts used to reach them.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Ricoh ScanSnap iX2400 |
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| Epson ES-590W |
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Ready to choose?
Open either model on Amazon to check the current price, customer reviews and delivery options.

One computer receives your scans and ScanSnap Home fits your filing process.
You prefer one-button operation and do not need phone access or direct USB-drive saving.
See price & reviews on Amazon
You need a TWAIN scanning route in a compatible application, subject to checking its driver requirements.
You want computer-free USB saving and can use a supported drive without password or encryption settings.
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