topic imageFORMULA R40 Office Document Scanner: getting a line on the reverse side of every card scan in Scanners

imageFORMULA R40 Office Document Scanner: getting a line on the reverse side of every card scan

coolbolts — Wed, 16 Sep 2026 23:20:01 GMT

After many years of usage i am now getting a line on the reverse sider of every card I scan and yes I tried cleaning.

FloridaDrafter — Wed, 16 Sep 2026 23:09:24 GMT

@coolbolts wrote:

After many years of usage i am now getting a line on the reverse side of every card I scan and yes I tried cleaning.

Since it's only on the back, it is the the upper scanning unit, probably a speck of dust or debris. Did you thoroughly inspect the upper glass?

Newton

coolbolts — Thu, 17 Sep 2026 09:32:34 GMT

Yes and cleaned about a dozen times still putting that line in

shadowsports — Thu, 17 Sep 2026 13:12:10 GMT

Try canned air. This is more likely dust or debris as my colleague @FloridaDrafter mentioned and not a failure of the unit /scan sensor.

FloridaDrafter — Fri, 18 Sep 2026 01:05:19 GMT

@coolbolts wrote:

Yes and cleaned about a dozen times still putting that line in

Did you use a little bit of isopropyl alcohol or just a dry cloth?

I've also resorted to a bright light (side light) to catch debris, and one time, a little nick.

Newton