Coated metal signs
Produce short and repeat runs of branded or informational graphics after the coating, adhesion and required durability have been approved.
Review the AJ2130G/R
Metal Surface Preparation Determines the Result
Coated aluminum and metal panels can vary in paint, anodized finish, oil residue, oxidation, protective film and surface energy. Before production, identify the exact panel construction, remove contaminants and confirm whether a compatible primer or pretreatment is required.
Use representative samples to test adhesion, white-ink opacity, color, scratch resistance and the intended finishing method. This provides a more reliable printer recommendation than selecting equipment by bed size or headline speed alone.
Metal panel production overview
Test the Metal Surface Before You Compare Output
Direct UV printing can produce full-color graphics on compatible coated metal and aluminum panels for signs, displays, decorative panels and industrial graphics. Reliable production depends on the exact substrate, coating, contamination, preparation method, ink layers and required end-use test.
Aluminum display panels
Plan color, white backing and panel layouts for compatible aluminum used in interior displays, exhibits and decorative installations.
Request metal testingNameplates and faceplates
Nest multiple compatible parts for logos, legends and variable graphics while controlling orientation, registration and inspection.
Review the AJ3220G/RRepeat panel programs
Build repeatable jobs around an approved panel source, cleaning method, artwork file, ink-layer recipe and acceptance procedure.
Review the AJ3220EXIdentify the substrate
Record the metal type, coating or finish, supplier, batch, dimensions, thickness, weight, flatness and intended print face.
Control the surface
Remove protective film when appropriate and control oil, fingerprints, oxidation, cleaner residue and only an approved primer when required.
Plan safe loading
Confirm panel edges, flatness, bed clearance, safe gaps, printable area, vacuum hold-down and whether a positioning fixture is needed.
Approve the complete system
Evaluate appearance, white opacity, adhesion, scratching, cleaning and the moisture, chemical or weather exposure relevant to the application.
Three wide-format production routes
Match Panel Format and Output to the Right Platform
Start with panel dimensions, weight, pieces per bed and the approved ink-layer sequence. Then compare the 2.1 × 3.0 m and 3.2 × 2.0 m platforms using a timed workflow that includes preparation, loading, printing, unloading and inspection.
Configurable 2.1 × 3.0 m platform
AJ2130G/R
- Maximum print area
- 2100 × 3000 mm
- Published website headline
- Up to 31 m²/h
- Useful when
- Mixed panel sizes and configuration flexibility matter more than maximum throughput.
Scalable 3.2 × 2.0 m platform
AJ3220G/R
- Maximum print area
- 3200 × 2000 mm
- Published 4-color production
- 35.88 m²/h
- Useful when
- Large-panel compatibility, bed nesting and expandable configuration are priorities.
High-output 3.2 × 2.0 m platform
AJ3220EX
- Published head configuration
- 16 Ricoh Gen5 heads
- Published draft mode
- Up to 154.3 m²/h
- Useful when
- Approved repeat jobs can keep material preparation, loading and inspection continuously supplied.
Published figures describe specific website or technical-table conditions and are not a production guarantee. Actual finished output changes with resolution, pass count, artwork coverage, ink configuration, white or varnish layers, panel layout, loading, unloading, inspection, preparation and operator workflow.
Information for a useful recommendation
Send the Details That Determine Metal Compatibility
A broad description such as aluminum or coated metal is not enough. These four groups of information let AndresJet review handling, surface behavior, ink layers and realistic output before recommending a configuration or representative sample test.
- 1
Panel dimensions and loading
Length, width, thickness, weight, flatness, edge condition, printable area, pieces per bed and any fixture or vacuum requirement.
- 2
Metal and surface finish
Metal type, paint, powder coating, anodized or brushed finish, supplier, batch, protective film, contamination and permitted preparation method.
- 3
Artwork and ink layers
Coverage, color reference, viewing distance, dark or light surface, white underbase, selective white, varnish and any raised-effect requirement.
- 4
End use and acceptance test
Interior or exterior location, handling, moisture, cleaners, chemicals, abrasion, weather exposure, quantity per design and finished panels per shift.
Metal and Aluminum UV Printing FAQ
Can every metal or aluminum panel be printed directly with UV ink?
No. Metal type, paint, anodizing, powder coating, oxidation, oil, protective-film adhesive and previous treatments can change wetting, adhesion and appearance. Test the actual production panel after the planned preparation process before approving the job.
Does a metal panel always need primer before UV printing?
Not every surface and ink combination needs the same treatment. Begin with controlled cleaning and the ink supplier's guidance. If adhesion is insufficient, evaluate a compatible primer or pretreatment and document the amount, application method, drying time and test result.
When is white ink useful on aluminum or coated metal?
White ink can provide an opaque base on dark, colored or reflective surfaces, support selective white graphics or separate color from the metal appearance. It adds passes, ink and registration requirements, so approve opacity and color on the actual panel.
Do anodized, powder-coated and brushed aluminum behave the same?
No. They have different surface chemistry, texture, reflectivity and prior treatments. Even panels with the same general finish can vary by supplier or batch. Keep samples traceable and validate preparation, adhesion and appearance for each intended material specification.
Can UV-printed metal panels be used outdoors or in demanding environments?
Do not assume suitability from print appearance alone. The complete panel, coating, preparation, ink layers and any protective finish must be tested for the required UV exposure, temperature, moisture, chemicals, abrasion, cleaning and service life.
Open the Metal Panel Printing Guide Hide the Metal Panel Printing Guide
From representative sample to repeat production
Building a Controlled Metal Panel Printing Workflow
Commercial metal printing combines traceable material identification, controlled preparation, safe loading, an approved ink-layer sequence and relevant durability testing. Define the process before estimating finished panels per shift or comparing machine output.
Choose the decoration process around the order
Direct UV printing
Useful for samples, variable artwork and short-to-medium panel runs with planned color, white and varnish layers on qualified surfaces.
Screen or industrial marking
Can suit established repeat graphics and long runs, but screens, color separation and setup make frequent design changes less flexible.
Vinyl, film or transfer graphics
May suit particular installations, but introduce media, application, edge finish, lamination and long-term compatibility considerations.
A six-step metal panel qualification process
- 1
Identify the material. Record metal, finish, coating, supplier, batch, dimensions, thickness, flatness, weight and intended print face.
- 2
Standardize preparation. Remove film and contamination when appropriate, using a method compatible with the exact finish and only a validated primer when needed.
- 3
Verify loading. Confirm bed clearance, edge safety, vacuum hold-down, printable area, orientation and whether a fixture improves repeatability.
- 4
Build the ink layers. Prepare color, white underbase, selective white and varnish according to the panel color, reflectivity and required appearance.
- 5
Condition and test a sample. Evaluate color, opacity, adhesion, scratching, cleaning and the relevant environmental or chemical requirement.
- 6
Time a pilot batch. Include preparation, loading, alignment, printing, unloading, inspection, cleaning and changeovers.
Painted, powder-coated or anodized panels
- Confirm the exact finish, supplier and production batch
- Remove oil, silicone, fingerprints and cleaner residue
- Check whether protective-film adhesive remains on the surface
- Validate primer compatibility only when treatment is required
- Judge color and white opacity on the actual finish
Bare, brushed or oxidized metal surfaces
- Do not assume that visually similar metals have equal surface energy
- Control oxidation, rolling oil and previous handling
- Document any approved abrasion, cleaning or chemical treatment
- Check reflectivity and white-layer strategy before color approval
- Test the complete printed and protected system for its final use
Surface preparation and adhesion testing
Metals sold under the same broad name can behave differently because of alloys, coatings, oxidation, release agents, oil and handling. Use clean gloves, lint-free materials and a documented preparation method appropriate for the exact finish.
If primer or another treatment is evaluated, record the product, application method, amount and drying time. Condition the printed sample before testing and use acceptance methods that represent the intended installation rather than relying only on immediate appearance.
A successful test sample applies only to the qualified material and process. Lock the panel source, preparation method, ink layers and approval procedure before repeat production.
Calculate output from the complete panel cycle
Start with the number and orientation of panels or parts that fit safely on the bed. Add artwork coverage, resolution, pass count, print direction and every color, white or varnish layer. Registration across cut parts or multi-panel graphics can add alignment and inspection time.
Then include unpacking, protective-film removal, cleaning, primer drying when used, loading, unloading, inspection, rework and downstream coating or packaging. A timed pilot batch using production material and artwork is the best basis for estimating finished output per shift.
Information to include in a metal sample request
Representative panels
Provide the intended metal, finish, dimensions, thickness and print face, ideally from the actual supplier and production batch.
Production artwork
Send a real file with coverage, color reference, alignment, white-underbase, selective-white, varnish and effect requirements.
Acceptance criteria
Define appearance, adhesion, scratching, cleaning, chemicals, abrasion, weathering or other required tests and who approves the result.
Output and handling target
Share panels per shift, designs per batch, operating hours, loading method, changeovers, inspection capacity and final destination.