Mine (B+W, not colour) is one of these: HP LaserJet 5000GN*
The bottom tray takes a ream of paper, up to A3 size, and the lump on the back is a duplexer (instant double-sided printing). It's networked and happily prints from iPads, etc. with one of my Linux boxes acting as the Airprint server (iOs is too dumb to use CUPS, etc. otherwise the Airprint thing wouldn't be needed). It's old, built like a tank, and very precise.
When I made my shooting board a while back, I printed a right-angled triangle to A3 (with 45deg to a line along one edge of the sheet). Stuck the paper to the board, and used that to adjust to - worked a treat.
Lasers don't suffer from fencepost errors, etc, meaning they are good for scaling plans, etc. This will do 1200 DPI if pushed to it, but the 1st-page-out time is measured in months under those circumstances. 300 DPI is sufficient for most uses, and then it's fairly fast. I've used it for magazines and even a small book (A5-ish sized paper). It has a "Mopier" function, meaning it will do imposition (automatically printing pages double sided and in the correct order to assemble into a book), and prints well on a variety of papers, thin card, etc.
And you can buy spares for it still, such as the rollers and cork pads used in the paper pick-up system. I use recycled toner cartridges, and sometimes refill my own (although that is messy!). Despite what HP might say, it's not very fussy about toner.
FWIW, the mechanics were a joint venture between HP and Canon (cameras, etc.) The firmware was (old) HP.
Oldie, but a real goodie.
E.
*It's a bit like Lego - you add bits to make it what you want. In my case, it's got a network card (with a web server for admin), extra memory (64GB-ish), which makes it a lot faster, the big paper tray on the bottom (even bigger ones were available, but I've never had need), and the duplexer. The middle "tray" is actually the front of the duplexer. If you want to feed not-bendy stuff through, you fold down the front and a door behind, above the duplexer lump.
