Scanner will perform Overview but not scan.

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Level 1

4 points

Scanner will perform Overview but not scan.

I'm using Preview version 11.0 and macOS Sequoia 15.6.1 to operate my scanner, Epson Perfection 1640SU. The scanner is NOT on a network but simply connected to a USB hub. I updated the Epson driver and other Epson software. Preview sees the scanner and the Overview function operates. One can see and hear the lightbar move the full length of the scan bed. When I select "Scan", the lightbar starts but seems to stall and Preview appears to be buffering but never completes the scan. When using Epson Scan 2 the app does not see my scanner. When I try to add it I'm asked for an address. Selecting my scanner in system setting simply opens Preview and I'm back where I started.

Mac mini, macOS 15.6

Posted on Sep 15, 2025 02:06 PM

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Answer 1

Top-ranking reply

den.thed

Level 10

89,062 points

Sep 15, 2025 02:18 PM in response to BonsaiBish

What is the dpi Resolution set at..?

If using a lower dpi resolution does not help..?

Try using the Image Capture app instead of Preview.

Scan images in Image Capture on Mac - Apple Support

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Answer 2

MartinR

Level 7

23,595 points

Sep 20, 2025 06:19 PM in response to BonsaiBish

In addition to the regular Epson 1640SU driver you also need to install the Epson ICA Scanner Driver v 5.8.23 for your scanner in order for it to work with Image Capture.

See https://epson.com/Support/Scanners/Perfection-Series/Epson-Perfection-1640SU/s/SPT_B126021?review-filter=macOS+15.x+%28Sequoia%29#drivers

If that doesn't work then I suggest using Vuescan for all your scanning needs. It does not need any of the Epson drivers.

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Answer 3

den.thed

Level 10

89,062 points

Sep 15, 2025 07:35 PM in response to BonsaiBish

BDAqua has a very good question that needs to be answered.

There is ICA Scanner Driver v5.8.23 for Image Capture for macOS 15 that might be needed for USB usage.

Another problem, could be slow data transfer because of bad or a low quality USB cable.

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Answer 4

BonsaiBish Author

Level 1

4 points

Sep 15, 2025 04:40 PM in response to den.thed

Two replies:

First, I mis-spoke. I was using Image Capture, not Preview.

Second, reducing dpi from 800 to 600 made no difference. When I hit "Scan" the lightbar activated but seemed to stall. Image Capture continues to buffer. Cancel button doesn't work. One must close Image Capture.

I then changed the Kind setting from "Millions of Colors" to "Black and White." The problem persists.

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Answer 5

BDAqua

Level 10

250,157 points

Sep 15, 2025 05:35 PM in response to BonsaiBish

How much free space on your drive?

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Answer 6

BonsaiBish Author

Level 1

4 points

Sep 20, 2025 04:38 PM in response to BDAqua

It's relatively new: 344.11 FB of 494.38 GB

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Answer 7

BonsaiBish Author

Level 1

4 points

Sep 21, 2025 04:08 PM in response to MartinR

MartinR, Thank you. I have installed Epson ICA Scanner Driver v 5.8.23 but it doesn't resolve my issue. Thinking about Vuescan but am going to try scanning from my phone first.

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