topic Canon LiDE 300/400 vertical dropouts in Scanners

Canon LiDE 300/400 vertical dropouts

creamsoda — Thu, 26 Jun 2025 17:52:15 GMT

Hi, I bought a Canon LiDE 400, and found that at 2400dpi it dropped two columns in its scans.

I returned it and picked up a Canon LiDE 300, only to find it drops five(!) columns.

Intel MBP, VueScan, OSX's builtin scanning software, connected directly to the machine (in the case of the 400) and connected via a fairly chunky USB hub with its own power supply (in the case of the 300 and the 400). Nothing makes any difference, and the "dead" columns and always in the same locations.

Am I going to keep seeing this with these scanners? They're looking kinda unusable right now.

Sample image attached. Should show a smooth curve obviously, but we're missing at least one column.

Re: Canon LiDE 300/400 vertical dropouts

Patrick — Mon, 30 Jun 2025 21:08:26 GMT

Hi creamsoda,

Please contact one of Canon's Technical Support Representatives via phone or chat. To contact a Technical Support Representative, please use the link below to log into your My Canon account:

https://mycanon.usa.canon.com

Once logged in, click on your CanoScan LiDE 400 and then click on the Product Support button. When that page loads, click on either the Phone Support button or the Chat Support button to access support. A Technical Support Representative can determine the cause of the issue and resolve it or provide you with your available service options.

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Re: Canon LiDE 300/400 vertical dropouts

creamsoda — Wed, 02 Jul 2025 19:18:22 GMT

Thanks, but I'm pretty sure the problem is that there are no full-width CIS sensors. I think I'm seeing the seam lines between the sensors, as I've seen the problem on two cheap Canon scanners and one cheap Epson now.

I'm going to try to interpolate the missing columns in software, and at some point in the future buy a CCD-based scanner.