A3 printer for small office support / client visuals from CS6 (Mac) CC (Win)
For the benefit of others in a similar situation - I have a solution. Epson Workforce WF 7610 (Europe) A3+ colour inkjet. You can Google the specs and processor

Highlights
 - Workgroup inkjet so decent processing power / ram to queue jobs for multiple PCs at once
 - Works excellently with Mac OS 10.8 with provided support utilities
 - Ditto Windows 10 boxes and runs over a Win wired network
 - Integrates with Mac Image Capture function for scanning direct to desktop
 - Scanner / Copier bed is full A3 and 10 seconds (fast) on standard resolution
 - A3+ colour print - high quality option with Epson papers and inks (good enough for client first visuals, office print)
 - Draft (standard) A4 B/W print is fast 2 seconds to spool, 3 seconds a page
 - Fax function to print / desktop included (phone line input)
 - Easy, logical set-up with touch screen colour panel
 - Fast start from cold and relatively quite running
 - Connectivity solid with on-board net card / ethernet, direct USB to PC, WiFi including 'air print' mobile phone bridge function, USB Flash, SD card, MS Duo



Caveats?
 - inks expensive but that goes also for HP, Canon, etc (offset by relatively cheap initial purchase - sub £200 Amazon)
 - requires Epson papers / inks for best results (but will take standard copier paper and 3rd party ink)
 - trays a little flimsy (unit itself is solid, will take some knocks)
 - footprint = 55cm x 55cm with front and rear paper feeds (for A3 nothing more than expected)



Would I recommend it?

Yes. Early days for reliability / cost of running although for functions, connectivity (ethernet, USB and WiFi print), ease of set up, Mac support, A3 scanning and workgroup capability I am smiling. Scanning and print quality are subjective to some degree and you can get better / faster obviously for more bucks - both good enough for my needs and if I go beyond this I go external and charge it on to the client (e.g. bound presentation visuals for a corporate).

END