The catch
Brother ADS-1800W
With a 20-sheet office-paper feeder, the stated 60-sheet job takes two reloads after the first load.
Side by side
The ADS-1800W suits small batches between desks, as long as a direct computer USB-C port supplies at least 15 W and your paper meets its limits. Its US base box has no AC adapter. The ES-590W suits a recurring 60-sheet stack of clean, loose 80 g/m² Letter/A4 paper, provided you have AC power, space for its 612 mm open depth, more than 10 cm behind it, and a stack under 12 mm. That job takes one Epson load in place of three Brother loads, which avoids two reloads. Heavier paper changes those capacities. Neither is a flatbed for bound books or for originals that must not pass through rollers.
Before you buy
Take 60 clean, loose Letter/A4 sheets of one 80 g/m² stock. Brother needs three loads for them, while Epson can hold the whole pile in one load as long as it stays under 12 mm thick. That removes two capacity-driven reloads, but not the preparing, checking or saving of the result. If your normal pile is 20 sheets or fewer, both can take it in one load and this reason to choose Epson disappears.
Where this comes from
Each manual’s feeder rating for the same ordinary paper goes into the calculation. Duplex changes how many page images you get and not how many physical sheets you load.
The catch
With a 20-sheet office-paper feeder, the stated 60-sheet job takes two reloads after the first load.
The catch
The supplied AC adapter and an outlet are required, even if the data connection is wireless.


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Brother ADS-1800W and Epson ES-590W are compared on paper loading, USB-C power and heavier forms, along with setup limits that can change your choice.
A scanner you carry to a laptop and one that stays next to a weekly paperwork pile can do the same document job with different interruptions. Brother can save you the hunt for a wall outlet. Epson can save you repeated feeder loading. Neither benefit comes simply from having Wi-Fi or a touchscreen.
Which one fits
Epson spares you two capacity-driven reloads if the clean, loose stack stays under 12 mm. It still needs AC power and 612 mm of open depth, with more than 10 cm behind the scanner. The same supported paper takes Brother three loads, given suitable power.
Brother can run straight from a USB-C port supplying at least 15 W using its included cable, as long as there is space for the paper exit. Epson needs its AC adapter and open-tray space. Do not assume every USB-C laptop port qualifies.
Given at most 20 clean, loose 80 g/m² Letter/A4 sheets, one load works on both. Brother still needs a qualifying host or a power supply bought separately. Look at complete package cost, destination and working clearance and do not treat feeder size as the winner.
The weight of those forms is above Brother’s standard-paper limit. Epson supports that weight for up to 50 sheets and a stack under 12 mm, given AC power, the 612 mm open depth and more than 10 cm behind the scanner. Glossy photos and arbitrary card stock are not covered.
Each is a document feeder. When the original must not be separated into sheets or run through rollers, use a suitable flatbed or overhead capture workflow.
In practice
Take 60 clean, loose Letter/A4 sheets of one 80 g/m² stock. Brother needs three loads for them, while Epson can hold the whole pile in one load as long as it stays under 12 mm thick. That removes two capacity-driven reloads, but not the preparing, checking or saving of the result. If your normal pile is 20 sheets or fewer, both can take it in one load and this reason to choose Epson disappears.
Each manual’s feeder rating for the same ordinary paper goes into the calculation. Duplex changes how many page images you get and not how many physical sheets you load.
When a direct computer port supplies at least 15 W, the USB-C cable included with Brother can carry the power scanning needs. That can make moving between desks simpler, since you do not have to find an outlet for another adapter. A low-output port or a USB-A adapter takes that advantage away and calls for optional AC power. Epson runs on its supplied AC adapter. At a permanent desk that already has an outlet, the distinction may matter much less.
Connector shape tells you nothing about power output. The Brother US support article names both the threshold and the fallback purchase explicitly.
Say the job that keeps coming back is ten clean, uncoated Letter forms on 157 g/m² paper. That already falls outside Brother’s 128 g/m² standard-paper ceiling, even though it is well below 20 sheets. Epson lists a 50-sheet capacity at that weight, subject to its paper and stack rules. It is a media-fit reason to choose Epson that has nothing to do with a large pile. Coated, damaged or irregular originals need their own handling checks.
The limits here are the published standard-paper ones. Brother’s separate plastic-card slot does nothing to extend the weight range for full-size paper.

Brother, ADS-1800W
A duplex scanner with a touchscreen, a 20-sheet feeder and a 3.1 lb body. The included USB-C cable can power it from a direct computer port that supplies at least 15 W. The US base package comes without an AC adapter.

Epson, ES-590W
This duplex scanner has a touchscreen and is rated for 100 sheets of 80 g/m² Letter/A4 paper. It runs on the supplied AC adapter and is 612 mm deep with the trays open. Heavier paper means a smaller load.
Spec by spec
| Spec | Brother ADS-1800W | Epson ES-590W | In practice |
|---|---|---|---|
| A 60-sheet office-paper job | Three loads, with two reloads after the first | One load, with no capacity-driven reload | It counts loadings for 60 clean, loose Letter/A4 sheets of the same 80 g/m² stock, inside both paper limits. It is no measured scan-time saving and no promise that the job finishes unattended. |
| Working without an AC outlet | Included USB-C cable can use a direct computer port supplying at least 15 W | Uses the supplied AC adapter and an outlet | Brother can drop the wall-power step only if the host port qualifies. A USB-C connector alone is not enough, and the base box does not include an AC adapter. |
| Standard paper weight | 51.8 to 128 g/m², also 0.08 to 0.14 mm thick | 27 to 413 g/m² for supported standard paper | Brother’s standard-paper weight range does not reach a clean, uncoated 157 g/m² Letter form. For such sheets Epson lists up to 50, and not the 100-sheet office-paper headline. |
| Scanner body carried between desks | About 3.1 lb or 1.42 kg | About 8.2 lb or 3.7 kg | Brother has the lighter body to lift. Before you compare travel kits, add the cables, power accessories and carrying protection you use. |
| Direct USB-drive filing | USB mass storage up to 128 GB, FAT12/FAT16/FAT32/exFAT | Up to 2 TB, FAT/FAT32/exFAT, without password or encryption settings | A touchscreen USB route that needs no computer to process each scan is on both. Match the drive to the scanner and sort out power separately. Epson also excludes devices that need a dedicated driver. |
| Space while paper is moving | Open the cover and support arms, with room for the sheets to exit | 612 mm scanning depth and 319 mm height with trays open | Storage dimensions and the working footprint are not the same thing. For Epson, also allow for cable access and more than 100 mm behind it when it sits by a wall. Brother’s short cabinet does not contain the whole sheet as it moves. |
Trade-offs
Change of plan
Go with Brother ADS-1800W. Pick ADS-1800W when its included cable takes away the extra wall-power step. Leave room for the document to travel. With a low-output port or a USB-A adapter, optional AC power is needed instead.
Go with Epson ES-590W. Pick ES-590W to avoid two capacity-driven reloads. Make room for its 612 mm open depth and more than 10 cm behind the scanner. The calculation promises neither unattended completion nor faster finished files.
Go with Epson ES-590W. Go with ES-590W if you have AC power, the 612 mm open depth and more than 10 cm behind the scanner. Even with a small pile, Brother’s standard-paper range ends at 128 g/m².
Neither model fits. Pick a suitable flatbed or overhead workflow. Neither a document feeder nor an optional carrier sheet gives you stationary scanning.
Decision guide
Start by counting how often you would reload for a normal job, then work out where the power and the moving paper will go. Check the destination workflow on its own.
By the numbers
What we found across the document scanners we compare, plus the checked facts behind each finding.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Brother ADS-1800W |
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| Epson ES-590W |
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Ready to buy
Open either model on Amazon for the current price, customer reviews and delivery options.

You move between desks, your usual batches are 20 clean, loose 80 g/m² Letter/A4 sheets at most, and your direct computer USB-C port supplies at least 15 W. The included cable can power the scanner with no AC adapter, as long as there is room for the paper to exit.
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Regularly, you scan 60 clean, loose Letter/A4 sheets of the same 80 g/m² stock, and the stack stays under 12 mm. You also have AC power, space for the 612 mm open depth and more than 10 cm behind the scanner. One load saves the two reloads that Brother's capacity forces.
Brother's standard-paper range stops at 128 g/m², and your regular forms are clean, uncoated 157 g/m² Letter/A4 paper, within Epson's paper rules and 50-sheet limit. You have AC power, open-tray space and more than 10 cm behind the scanner.
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