I’ve recently installed Leap 42.1. Overall its the best version of opensuse I’ve ever used!
But I’m trying to get simple scan to recognize my hp photosmart C4795 printer. The printer was easily found, but not the scaner part. Do I need to install hplip?
What is needed to get the scanner part of the printer to work?
According to the SANE Supported Scanners search engine this model is supported by the hpaio backend. So, yes you will need to install the hplip package.
i installed the hplip. There wasn’t a hpaio to install. Then when finishing it asks for username and password, but it wouldn’t accept my password and I don’t know of another one. so I can’t use the scanner? How can I fix this problem?
Right, now that I’ve checked further, the hpaio actually support comes from ‘hplip-sane’, and /etc/sane.d/dll.conf should contain the uncommented ‘hpaio’ entry as well.
Then when finishing it asks for username and password, but it wouldn’t accept my password and I don’t know of another one. so I can’t use the scanner? How can I fix this problem?
What utility were you using to configure the scanner? Normally root credentials would be needed.
I was using hplip. It’s frustrating that it won’t take my root password. Sorry, but I’m going back to Mint. I just works better for me. Printer scanner recognition should be automatic these days, using CUPS is from ten years ago. Too bad you have to still use it. As much as I thought this was the best opensuse I’ve used, it’s not any better than Mint or Ubuntu for desktop use. Maybe better for server use, but not for the general public.
Since I can’t edit or delete my thread, please delete it for me. Thanks
Your choice. Use what works for you. Sometimes patience and perseverance is needed to solve a problem.
Printer scanner recognition should be automatic these days, using CUPS is from ten years ago. Too bad you have to still use it.
CUPS works fine, and it’s what all Linux distros use for years, including MINT. However, your issue doesn’t concern CUPS at all - it was about the scanner, and that is supported by SANE.
As much as I thought this was the best opensuse I’ve used, it’s not any better than Mint or Ubuntu for desktop use. Maybe better for server use, but not for the general public.
That’s your opinion, and subjective since it’s what you’re used to. Most here will totally disagree. 
Since I can’t edit or delete my thread, please delete it for me. Thanks
No, we don’t typically do that here, since this may be of help to others who come searching.
Out of interest I just set my HP printer - scanner up , cause I haven’t got round to doing it yet. Wondered if the set up procedure had altered much in KDE plasma 5. And I have to say it’s been massively simplified and is actually pretty slick and fully working.
Root password had to be given (not user), I already had HPLIP installed and it detected the model (3050a) immediately, I picked the CUPS option for the recommended driver, printed a test page out, configured it a little and that was it. I went to the Skanlite program that was preinstalled and scanned a page hassle free. That was it. I’ve had some issues in the past with KDE printing / scanning but this was seamless.