Understanding Two Key Steps in Professional Print Approval
In commercial printing and packaging, approval happens in stages. Two terms clients often hear are Epson (or ORIS) proof and press check. While both help ensure quality and color accuracy, they serve very different purposes in the production process.
Understanding the difference helps teams make smarter decisions, avoid delays, and move into production with confidence.
What Is an Epson Proof?
An Epson proof is a color-managed digital proof created before the job goes to press. It uses calibrated software and press profiles to simulate how the final printed piece will look.
Epson proofs are used to:
- Review color accuracy before production
- Align designers, clients, and production teams
- Make fast, economical color changes
- Approve artwork without running a press
Because they are fingerprinted to specific press profiles, Epson proofs are typically 90%+ true to color for CMYK process printing.
What Is a Press Check?
A press check happens during actual production, when your job is running on the press. This is the stage where clients or print specialists review the real printed sheets and confirm that color, density, and overall appearance meet expectations.
Press checks are used to:
- Confirm final color on production stock
- Review ink behavior and print quality live
- Make small press-side adjustments if needed
- Provide final approval before full run continues
Unlike a proof, a press check shows the true interaction between ink, paper, and press conditions.
Epson Proof vs. Press Check: Key Differences
Epson Proof
- Digital simulation
- Used before printing begins
- Fast and cost-effective adjustments
- Specialty proofing paper
- PMS colors simulated
Press Check
- Live production review
- Happens on the press
- Final material and ink interaction visible
- Changes are more limited and costly
- True representation of final output
Which One Do You Need?
Most commercial printing and packaging projects start with an Epson proof. It allows color decisions to happen early – when changes are easier and more economical.
A press check may be recommended for:
- Brand-critical color accuracy
- Large production runs
- Premium packaging projects
- Complex graphics or specialty finishes
At Calitho, we guide clients through both steps, so approvals are clear and production runs smoothly. Let us help with your next project by requesting a quote today.