So now I have to stand around 100 expensive one year old scrap here. Going to the recycling center is certain. HP scanner? Never again!
Supplement 01.05.2015: This my criticism applies to the G3110 and is therefore published here. However, is the "Renz Sion" and again under the G4050. No idea why this is so.
For my personal archive I have been working 99% with a Fujitsu ScanSnap. Is a super device. But now and then there are things that can not cope with a sheet-fed scanner (books, stapled documents, etc.). Therefore I bought this HP Scanjet.
And yes, that thing scanned. But the buttons on the lid not work times and times also. The software (for Mac) is simply abysmal. The thing is, even at low resolution lame as dog. Every now and then I get - for whatever reason - a black / white document described with a rich green tint where supposed to be black writing. Because of an illness I missed the Amazon return period, otherwise I would have the apparatus long ago to get rid of. Therefore, I have only happy when the scanner was no peep from two days ago; no current! After much back and forth, I then found that the E cable is loose between the device and lid, probably by the opening and closing of the lid. Another weak point, but not - as hoped - a warranty claim.
Now I'll have to live first with the part, but again I would not buy the scanner.