Quick answer: A good used wide-format printer advert should identify the exact model, print width, ink technology, condition, printhead status, recent test-print results and service history. Buyers also need to know which software licences, accessories and consumables transfer, and what specialist decommissioning or transport will cost.
For a signmaker, print shop or in-house graphics team, a used printer can offer useful production capacity. However, an attractive price is not enough if replacement printheads, obsolete software or transport make the machine uneconomic. Seller transparency helps serious buyers compare equipment confidently.

How do you establish the printer's real specification?
Record the manufacturer, model, serial number, print width, ink type, media handling capabilities, year and operating or print counters where the machine provides them. Note whether it is roll-fed, flatbed or hybrid, and identify included take-up units, tables, dryers, cutters or colour measurement equipment.
Avoid ambiguous phrases such as “all extras included”. List each accessory and explain its condition. Where the device uses special power, extraction or ventilation, specify the manufacturer's requirements rather than relying on an assumption that a standard socket is enough.
Which test prints help potential buyers?
Where it is safe and practical, provide a recent nozzle check or equivalent diagnostic print, plus a sample showing fine text, large solid colours and a gradient. Photograph the dated output clearly and state when the test was produced. This can reveal obvious nozzle or colour problems but does not guarantee that a machine will perform perfectly in sustained production.
Disclose printhead issues, banding, recurring error codes, blocked ink lines, damaged media rollers and problems with heaters or cutters. Record maintenance and the last period of regular use. If the printer has been idle for months, say so; idle ink systems may need specialist attention.
Does the RIP software come with the printer?
Never assume that a raster image processor (RIP) licence, design software or cloud account automatically transfers with the hardware. Check the licence terms and confirm in writing whether the buyer will receive a legally transferable licence, dongle or account access. If not, state that compatible software must be sourced separately.
Before handover, remove customer files, stored jobs, network settings and credentials in accordance with the manufacturer's guidance. If the printer contains a hard drive or other data storage, make a documented plan for secure erasure or removal.
What should be agreed about ink and transport?
List installed cartridges, remaining ink where verifiable, cleaning fluids and included spare parts. Some machines need a controlled shutdown, transport restraints, specialist ink-system preparation and recommissioning. A standard pallet courier may not be suitable.
Tell buyers whether the machine is installed and available for demonstration, whether access requires stairs or lifting gear, and who bears the cost of disconnection, loading, delivery and installation. Calculate asking price with reference to condition and the cost of getting the printer productive again.
Frequently asked questions
Does a nozzle test prove a used printer is fully working?
No. It is useful evidence of printhead condition at that moment, but sustained printing, colour accuracy and finishing systems may still need checking.
Can I include RIP software when selling?
Only if the licence can legally be transferred and the required activation method is available. Check the vendor's terms first.
Should I dispose of old ink before sale?
Follow the manufacturer's decommissioning guidance. Record what remains in the system and use an appropriate waste route for unwanted consumables.
Next step: Compare used commercial printers to understand how similar equipment is described and positioned.