Not Bug; New printer (not on Supported List) Working!

[Marcel]

Although the 'HP Deskjet 3750' is not on the Supported Printers List, it is working with 'HP DeskJet 3700 All-in-one' driver.

HP Deskjet 3750
   Driver works: HP DeskJet 3700 All-in-one

Installed Software
Original
   hplip 3.16+repack0-1 3.16+repack0-1 HP Linux Printing and Imaging System (HPLIP)
   hplip 3.16+repack0-1 3.16+repack0-1 HP Linux Printing and Imaging - documentation

   The printer did not work!

Installed
   hplip-3.19.1.run

   The 'HP Deskjet 3750' printer did not work nor did my 'old' 'HP Deskjet 1510'!

Reinstalled via Synaptic
   hplip 3.16+repack0-1 3.16+repack0-1 HP Linux Printing and Imaging System (HPLIP)
   hplip 3.16+repack0-1 3.16+repack0-1 HP Linux Printing and Imaging - documentation

   The 'HP Deskjet 3750' printer did work!

Linux Mint
   Release Linux Mint 18.3 Sylvia 64-bit
   Kernel Linux 4.4.0-45-generic x86_64
   MATE 1.18.0

Printer Properties
   Settings
      Description: [HP Deskjet 3740, hpcups 3.19.1]
      Device URI: [hp:/usb/DeskJet_3700_series?serial=CN9186P05406GZ]
      Make and Model: [HP Deskjet 3700 Series, hpcups 3.19.1]