"Now, depending on the sensitivity of your scanner..."
That's just one of many variables. Tweaking it there can cause the scan to pick up too much information and fill in smaller characters. Where the problem lies though is not with the scanning. It's whatever settings/options are chosen for output to PDF. That's where the harsh digitization of some of the letters happened that is causing all this chatter.
Remember the other day Obama was crying about not having cooler phones and gadgets in the Oval Office? I'll bet a steak dinner this PDF was produced by some hapless intern on a cheap all in one printer/scanner/fax deal.
I thought it strange that they'd send a lawyer to Hawaii to pick up a couple of copies. Seems to me the President of the United States should be able to get an attachment on an email and run that sucker through something at Langley that'd be sharp, clear, rehabilitated in every respect, etc.
That suggests there's no one in the chain of command between Obama and anybody who gets contact with him who knows anything about modern communications and data management ~ or, worse, printing.
Seriously, is this one of those All-In-One things you pick up at Best Buy? Or, is it the cheaper one at Staples, or even worse, one on loan from the big Democrat who owns COSCO?