Wall printer
A Wall printer (also known as a wall printing/printer machine, direct-to-wall printer ) is a specialized inkjet printer enabling both vector and raster graphics to be printed onto any flat vertical surface. Wall printers use a positioning control system to move its print head(s) across large vertical areas, allowing for direct-to-wall impressive artwork like logos, murals, and text to be printed onto indoor and outdoor walls or other large flat vertical surfaces e.g.: plaster walls, concrete, brick, stone, glass, metal, wood, PVC, and other non-absorbent materials. [1]
Types
Wall printers fall into several categories based on ink technology:
- latex ink durable, odourless, flexible finish - best for indoors.
- water-based ink eco-friendly, lower cost - best for smooth indoor surfaces.
- UV-curable ink highest quality characterised by resistance to abrasion, UV rays, and water exposure - best for outdoors
Technology
Printer head
The most important component of a wall printer is the print head, which is the same type as used in industrial inkjet printers. The most commonly used types are the Ricoh GH2220, Ricoh Gen 6, Epson i1600/i3200, and the now-obsolete Epson DX7. These are Drop-on-demand print heads – either a single combined head shared by all colours, or separate heads for each CMYK component (Cyan, Magenta, Yellow, Black) with maybe optional White. The printhead is responsible for transferring ink onto the surfaces to be printed. It achieves this by jetting tiny droplets of ink through the printer nozzles over a maximum throw distance of up to 4-20mm.
Ink Supply System
Traditional gravity-fed (siphon) ink delivery systems are being superseded by negative-pressure (vacuum-pressure) systems, which significantly improve operational reliability and print quality with modern print heads such as the Ricoh Gen 6. [2]
Operation
The printhead moves vertically along a rail. To enable horizontal movement of the entire print head assembly, the rail together with the control system is mounted on a carriage with its own drive mechanism. The printer controls the movement of the entire assembly by several millimetres horizontally each time the printing printhead completes a full vertical pass. The speed of movement depends primarily on the selected print resolution (DPI) and print head speed. Maximum print height varies depending on the printer model and ranges from approximately 1.5 metres up to several metres. Although vertical wall printing can achieve designs that appear to extend from floor to ceiling, practical limitations apply: the printer typically cannot print within 30 cm of either the floor or ceiling, with smaller gaps around vertical obstructions such as doorways and pillars. [3]
Attributes
- Distance sensing ultrasonic/laser sensor – identifies wall flatness and ensures the print head keeps a save distance from wall
- CMYK+W printheads – allow for double-sided printing on glass, as well as clear imagery on dark surfaces
- UV-LED lamp – instantly polymerizes the ink making it scratch-resistant and waterproof
- Vertical extension rails – to extend printing height
- Rubberised wheels enable precise lateral positioning of the printer along the wall, accurate to within a few millimetres.
- Horizontal rails: set the printer-wall standoff and ensure level tracking.
- Built-in computer with RIP software
- Ink containers with level sensors – permit ink refilling without interrupting the printer's operation
- Crosshair laser – for precise positioning, allowing for the seamless joining of two print runs
See also
References
- ↑ "Compatible surfaces". Retrieved 2026-10-15.
- ↑ ”Wall Printer Buyers Guide” (PDF). "Wall Print Academy". p. 6-11. Search this book on
- ↑ "Frequently Asked Questions". Retrieved 2026-10-15.
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