All of that said, I do believe (sorry it's been a couple years since I worked with a Roland) that you can purchase banner material that you can print directly to on the Roland. But you still need to be off-gassing it and laminating it if its going outdoors.
UV ink printers are the way to go. If you are deadset on printing these yourself (factor in the cost of someone who knows how to operate one too), go with UV. Solvent printers like Roland can work for you, but then you need to also buy a wide format laminator to protect the ink from elements. UV...
I am an OCE Arizona operator (in Canada) and I Can tell you right now, achieving exact registration front to back on the flatbed is damn near impossible. You can get within 1/8 to 1/16 of an inch, but since the sheet is flipped by hand (as opposed to an offset printer which flips inside the...
I can't speak for those ones but I run the Canon/OCE 350GT (dead technology now but the newer ones are even better) and I print on phone cases often. Its great!
We run the OCE 350GT (dead technology now, I know) and we do everything from styrene to coroplast to banners and posters. And everything in between. We do a ton of lawn signs and real estate stuff and the like. Never had a complaint. Only real complaint I have is the inks are expensive and...
In my opinion though, the Caldera RIP software is top notch. You can just do so bloody much with it. If they have a booth, definitely spend some time there.
Can I ask a couple newbie type questions?
1. What is the purpose of this test?
2. What is used to measure the dot gain? Is it visual or is there a tool or something?
I use the OCE Arizona 350GT. It's a bloody workhorse and can print on pretty much any substrate plus it has a roll to roll option. We've even printed on golfballs and laptops. Also, the Fuji Acuity is basically the same machine. It's pricey, but 100% worth it.
YOu could always have the "consultant" come in and see for themselves what all is involved. If not, then write him/her a 3 page long detailed description of the process and the stuff that gordo listed. They will probably get bored after the first few sentences since they likely don't have a clue...