Thanks
@Powerful84tiger @anmolbhard004 @Jonas @akshay71 @Navjot Singh for your helpful messages.
anmolbhard004: contact their sales team to confirm
@anmolbhard004: I reached out to BOTH
HP and Canon Sales Teams. They just gave unhelpful copy-paste template messages to contact other teams or area distributor. I contacted them too but no replies. Instead of such emails, one would think if they just give the model name / number, then that would be most helpful for their sales. But no!
@akshay71 The colour prints I may take for A4 pages. But you are right, for legal prints on green paper, I will use black only.
The thought here is that since I am spending so much to get a duplex auto-scan for legal paper size and duplex auto-print + copy for legal paper size and since the colour tanks have made colour prints cheaper too, why not research and buy a ink tank colour all in one
printer, so that I don't need another separate printer again just for colour prints. But I have heard similar reports about problematic colour tank printing heads and frequent maintenance issues.
Based on all the replies here & online research, I have decided to settle on black ink laser and HP 4014DW
HP LaserJet Pro MFP 4104dw Printer seems to meet all my requirements.
Thanks everyone for your inputs and guidance. Appreciate!