HP Photosmart C5180 All-In-One InkJet Printer "figuring percentages" Questions

I can't figure out how to enlarge copies on my printer From printers front panel Press setup > copy menu > Size Actual Size Fit to Page Custom 100% (Use arrows to change percentage)

When I scan the size of the scanned item is too big to e sent on Email as an attachment. How can I scan it in a small size so that the scanned item can be sent as an attachment on Email? Click Start, ...

Help if you can. I have Samsung CLP-600N it's saying that a color cartidge is empty (I don't think it is) but even if Cyan is empty, I don't care. I'm only trying to print a document in black which is

Oki C5450 error message OKI C5450 error mess reads 'K drum kife' and the attention light is always red. Manual says ask for tech advise?I have just replaced the black K toner so I know it's not that. ...