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Stone Results Begin With Surface Qualification

Slate and stone vary in mineral composition, porosity, cleft, polish, sealers and dust retention. Clean and condition representative production samples using an approved method, then compare direct color, white-underbase options and adhesion on the actual printable face.

Record thickness and weight before loading. Approve the finished sample against its real handling, cleaning, moisture and indoor or outdoor exposure requirements instead of assuming one setting or coating will suit every material sold as stone.

Request Stone Sample Testing

Stone printing production overview

Stone Is a Material Family, Not One Print Setting

Direct UV printing can support qualified slate plaques, stone signs and decorative panels, but natural variation matters. Surface porosity, cleft, polish, dust, sealers, thickness, weight, ink layers and end-use exposure should be recorded and tested before a printer or production target is approved.

Slate plaques and small décor

Produce qualified slate signs, table plaques, coasters and personalized décor when the part dimensions, weight, surface condition and printable area fit a controlled compact workflow.

Review the AJ1206

Stone samples and short runs

Change artwork without making a separate screen for every version, while keeping the substrate batch, cleaning method, white layer and inspection standard traceable.

Compare ceramic tile workflows

Standard stone panels

Plan individual or nested panel layouts on a 2500 × 1300 mm platform after confirming safe loading, supported weight, flatness, clearance and surface preparation.

Review the AJ2513G/R

Large decorative panels

Evaluate a larger platform only when panel dimensions, handling equipment, bed support, operator access and the approved production test justify the workflow.

Review the AJ2130G/R

Identify the printable face

Record stone type, supplier, finish, porosity, cleft or polish, sealer, color and batch. Test the exact face that will be printed.

Remove dust consistently

Stone dust, cutting residue and cleaning products can change adhesion. Use an approved preparation method and allow the surface to reach a stable condition.

Qualify weight and flatness

Print area alone does not confirm that a slab can be loaded. Submit dimensions, thickness, individual weight, surface relief and support requirements.

Approve ink layers and exposure

Compare direct color, white-underbase options and any varnish requirement, then test adhesion, cleaning and the intended indoor or outdoor conditions.

Three current flatbed platforms

Match Part Size and Handling to the Right Printer

Published print areas help define the first shortlist. Final selection also depends on individual part weight, thickness, surface relief, safe loading, bed support, ink sequence, inspection and actual tested output.

Compact samples and plaques

AJ1206

Maximum print area
1200 × 600 mm
Published media range
0–35 mm; maximum media weight 36 kg
Published ink configuration
CMYK + White + Varnish
Useful when
Small plaques, samples or nested parts fit the bed and pass the loading and material test.
View AJ1206

Standard 2500 × 1300 mm platform

AJ2513G/R

Maximum print area
2500 × 1300 mm
Published printhead options
Ricoh Gen5 or Gen6
Published configuration
Configurable with up to 8 printheads
Useful when
Standard panels and configurable mid-format production are the priority.
View AJ2513G/R

Large 2100 × 3000 mm platform

AJ2130G/R

Maximum print area
2100 × 3000 mm
Published printhead options
Ricoh Gen5 or Gen6
Published configuration
Configurable with up to 8 printheads
Useful when
Large panels and a controlled wide-format handling plan are required.
View AJ2130G/R

A published bed size or media limit is not a blanket approval for stone. Confirm concentrated load, support, surface relief, clearance, loading method and the exact production material with AndresJet before purchase.

For a useful recommendation

Send the Material and Workflow, Not Only a Stone Name

Natural material names are too broad for reliable selection. These four groups let the application team assess printer fit, preparation and a representative sample plan.

  1. 1

    Material identity and finish

    Stone or slate type, supplier, batch, porosity, cleft or polish, coating or sealer, printable face and current preparation method.

  2. 2

    Dimensions and handling

    Length, width, thickness, individual weight, quantity per bed, flatness, fragile edges, loading equipment and available support.

  3. 3

    Artwork and appearance

    Print file, color reference, image coverage, dark-substrate opacity, white or varnish requirement, viewing distance and acceptable texture.

  4. 4

    Use and acceptance test

    Indoor or outdoor location, handling, cleaning, moisture, abrasion, expected service conditions, order mix and written pass/fail criteria.

Stone and Slate UV Printing FAQ

These answers define what must be verified before production; they do not replace testing on the actual material.

Can every type of stone or slate be printed with UV ink?

No. Stone varies in mineral composition, porosity, dust retention, surface energy, sealers and texture. Some materials may accept a tested process, while others need preparation or may not meet the required adhesion and durability. Submit the exact production sample.

Does stone need a primer or sealer before printing?

It depends on the stone, existing finish, ink system and acceptance test. A porous surface, polished face or unknown sealer can behave differently. Do not prescribe a universal primer from the material name alone; compare controlled samples using preparation approved for that substrate and end use.

How are colors handled on dark slate?

Dark slate may need a tested white underbase where opacity is required. Compare direct color and one or more white-layer options using the real artwork, then evaluate edge quality, color, surface feel and adhesion before approving the file and ink sequence.

Can a large flatbed printer handle any heavy stone slab that fits the bed?

No. Print area is only one constraint. Individual weight, concentrated loading, thickness, relief, flatness, bed support, loading equipment and safe printhead clearance all matter. AndresJet should review these values before the material is placed on a printer.

Is a UV-printed stone panel automatically suitable outdoors?

No fixed outdoor life should be promised from the printer or stone name alone. Ink, white and varnish layers, preparation, water, UV exposure, temperature changes, abrasion, installation and cleaning can affect performance. Define the environment and complete an appropriate sample or weathering test.

Test before production

Send Us Your Stone and Artwork Requirements

Share representative material, dimensions, thickness, individual weight, printable face, artwork and end-use conditions. AndresJet can review the application, identify a suitable current platform and arrange a sample test.

View the Stone and Slate UV Printing GuideHide the Stone and Slate UV Printing Guide

Material qualification guide

Plan Stone Printing Around the Real Surface and Finished Use

A useful pilot documents the substrate, preparation, loading, ink layers, post-process and acceptance result so repeat orders do not depend on an unrecorded first sample.

Direct UV printing compared with other decoration routes

Direct UV printing

Supports digital artwork changes and color plus white-layer options on qualified flat surfaces. It still requires material, loading, adhesion and finished-use testing.

Engraving or etching

Removes or alters the surface and can create a different tactile result. It is a separate process with its own equipment, dust control, depth and finishing considerations.

Applied graphics

Labels, films or transfers can suit some uses but add a separate material and application step. Edge appearance and adhesion should be evaluated for the final environment.

A controlled stone sample workflow

  1. 1

    Identify and inspect. Record material type, supplier, batch, finish, printable face, pores, cleft, chips, coating, sealer and visible dust.

  2. 2

    Measure before loading. Confirm length, width, thickness, individual weight, flatness, surface relief and the support needed to keep the part stable.

  3. 3

    Prepare consistently. Use only a substrate-appropriate cleaning or conditioning method and allow the surface to reach a stable state before printing.

  4. 4

    Print a controlled matrix. Compare direct color, white-underbase options and any varnish layer while keeping files, settings and sample locations traceable.

  5. 5

    Test the finished use. Inspect color, adhesion, cleaning, moisture, abrasion and environmental exposure that match the actual application.

  6. 6

    Approve and document. Save the material batch, preparation, file, ink sequence, loading map, settings and acceptance result for repeat work.

Material details to record

  • Natural slate, limestone, marble, granite, engineered stone or other supplied material
  • Supplier, product code, batch and printable face
  • Honed, polished, cleft, sealed, coated or unfinished condition
  • Dimensions, thickness, individual weight and edge condition
  • Surface relief, pores, dust, moisture and flatness
  • Approved cleaners, sealers or preparation restrictions

Acceptance tests to define

  • Color and white opacity under intended lighting
  • Initial and post-conditioning adhesion
  • Cleaning and chemical contact expected in use
  • Moisture, abrasion and handling resistance
  • Indoor, sheltered or outdoor exposure
  • Edge, chip and installation appearance

Why the same stone name can produce different results

Two products sold under a similar commercial name can differ in porosity, mineral structure, resin content, factory sealer, polishing compound or surface contamination. Even different faces or batches of one stone may not behave identically.

Approve the production material and preparation together. A successful print on one slate sample does not automatically qualify another supplier, finish or batch.

Build artwork and ink layers for the substrate

Natural surface variation

Choose artwork that tolerates or intentionally uses color, grain and texture variation. Keep critical detail away from chips, deep cleft and irregular edges.

White underbase

Use a controlled white layer when the design requires opacity on dark stone. Test coverage, registration, edge appearance, adhesion and surface feel.

Varnish and protection

Varnish can alter gloss and texture but should not be treated as a universal outdoor guarantee. Evaluate the complete layer stack under the expected conditions.

Estimate output from the complete workflow

Finished output depends on more than carriage speed. Time a representative pilot that includes:

  • Material inspection, cleaning and conditioning
  • Safe loading, support, alignment and unloading
  • Artwork processing, color, white and varnish passes
  • Inspection, adhesion testing and rejected-part allowance
  • Design, material and batch changeovers
  • Operator attendance and safe handling of heavy or fragile parts

Use the approved pilot to set pieces-per-shift expectations instead of relying on a headline speed.

What to send with a sample request

Material

Representative production pieces, supplier code, type, batch, finish, sealer, printable face and preparation instructions.

Geometry and handling

Dimensions, thickness, individual weight, surface relief, flatness, fragile edges, pieces per bed and available loading equipment.

Artwork

Production file, color reference, coverage, white or varnish requirement, viewing distance and acceptable surface texture.

End use

Quantity, versions, turnaround, installation, handling, cleaners, moisture, abrasion, environment and written pass/fail criteria.