I have a MacBook Air (MBA) and an iMac wirelessly connected to my Dell MFP e525w printer/scanner/fax. I upgraded both the MBA and the iMac to Mac OS Big Sur. After the upgrade both print fine. The MBA scans with no problems. However, the iMac has not been able to scan properly since the upgrade. When I try to scan on the iMac, the overview phase starts, but instead of showing the document it just shows a blank screen with static and horizontal lines. I can't figure out why the scanner works perfectly on the MBA and doesn't on the iMac. They are set up the same way, unless there is some setting I'm missing that is on one and not the other. I would appreciate any help. Thanks.
I have the exact same issue with my Dell 1765nfw. Before I upgraded my iMac to Big Sur, it would scan just fine. But after the upgrade, it's the same issue you described.
Quick update after installing Big Sur 11.1 Reinstalled the current printer drivers from the Dell Support site. Repeating the Steps above now returns Freezes using Secure AirPrint and remains stuck on "Scanning document "Scan"" "Scanner reported an Error - Access to scanner is denied" using the generic post script drivers Import from device, in Photoshop, also freezes. Problems have changed but not fixed. Curious to see what others experience. Also exploring other printer/scanner options. I get that his is an older device, but pretty that Dell is no longer providing support or updated drivers. They have been very diligent about emailing me to offer "paid" technical support. No thanks!
ursamajor73
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Posted November 18th, 2020 17:00
I have the exact same issue with my Dell 1765nfw. Before I upgraded my iMac to Big Sur, it would scan just fine. But after the upgrade, it's the same issue you described.