From Artwork to Printed Box: File Prep and the RIP Workflow on a Corrugated Digital Press

No Plates: the Artwork File Is the Plate

Conventional corrugated printing starts with film, plates and on-press colour adjustment, so a job change can take an hour or two. A digital press skips all of that: the artwork goes into the computer, the RIP software processes it, and the printheads image directly — the file is the plate. On the RS2500-E16SM, artwork sent by a customer is imported, dropped into the RIP and printed; switching jobs is a few clicks, with no plate washup, no ink swap and no re-adjustment. What used to take one or two hours becomes minutes.

What the RIP Software Does

The RIP (raster image processor) converts the vectors, text and images in your artwork into the dot-by-dot ink data the printheads execute. Every press in the range runs professional RIP and print software on a Windows 10 64-bit system, and it works like using a PC: PDF, AI and other common formats import directly, no platemaking or colour-matching specialist is needed, and one or two trained operators run the machine.

Match File Resolution to the Press's dpi Rating

Set the output resolution of your files against the rated print resolution of the press. For transport-packaging layouts, the RS2500-E36S at >600 × 300 dpi covers brand marks, graphics and barcodes. For narrow work with small text, 1D and 2D codes, the RS1800-HPA3 at ≥1200 × 300 dpi prints fine text and barcodes cleanly enough to scan reliably. For detailed graphics and display panels, look at the >360 × 1200 dpi configuration of the RS2500-E16. The two numbers in a dpi rating refer to the cross and feed directions — see How to Read Resolution Specs on a Corrugated Press for details. Whatever the dpi class, portraits and fine gradients should be sample-printed beforehand.

Nesting: Feathering, Skip-White and Job Queueing

Several RIP functions have a direct effect on output quality. The RS2500-E16 and RS2500-E8 include automatic image feathering and skip-white printing: feathering blends the seams between adjacent ink passes so the joins stay out of sight; skip-white skips the blank areas of the layout, saving ink and shortening each pass. Both presses queue multiple jobs, so operators line up orders back to back and the machine keeps running between changeovers. Their controller boards and companion software are developed by the press maker, so hardware and software work together without a third-party conversion step in between.

Variable Data: Changes Beyond the Plate

A job change swaps the whole layout; variable data changes what prints on each sheet within one layout — serial numbers, 2D codes, batch numbers, with every board different. The RS2500-E36S lists variable-data printing among its features, and with no plates and no make-ready it can proof, correct and reprint on the spot. For one-code-per-box traceability work, what changes is a row of data, not the layout file. On barcode legibility, the RS1800-HPA3 states that fine text, 1D and 2D codes print cleanly and scan reliably.

Rush Jobs and Simple Layouts: Switch to Single-Pass

For urgent text, barcode and solid-colour work, the RS2500-E16SM switches to its high-speed single-pass mode: an effective image area of 512 × 2,400 mm (20.2 × 94.5 in) at 30-60 m/min (98-197 ft/min, feed time excluded), with finished pieces in minutes. Large standard orders switch back to scanning mode at 600-1,200 m²/h (6,458-12,917 sq ft/h, feed time excluded). Resolution does not change with mode — the 16 Epson i3200-A1 micro-piezo head groups hold the rated ≥360 × 600 dpi in either mode. Layouts wider than 512 mm (20.2 in) must run in scanning mode, so plan capacity per square metre.

Pre-Flight Checklist Before Sending Files

• Keep the blank's developed width within the press's format ceiling: 900 mm (35.4 in) on the RS1800-HPA3, 1,200 mm (47.2 in) on the RS2500-E36S, and up to 2,500 × 1,350 mm (98.4 × 53.1 in) with auto feed on the scanning RS2500 models.
• Set file resolution to the target press's dpi rating, and give barcodes enough physical size.
• For colour on kraft or dark-faced board, choose a configuration with white underlay (colour-plus-white or UV models).
• Confirm spot-colour channel configurations with your supplier in advance.
• Sample-print portraits and fine gradients on your own board before committing.

Beyond the File: Board and Proofing

Two more things decide whether the initial piece comes out right. One is the board itself: the presses accept 3-40 mm (0.12-1.57 in) corrugated, covering common single- through double-wall grades, but unusually thick or shaped board should be sample-tested first, and heavy board near the thickness ceiling needs its feed stability confirmed. The other is proofing: portraits and fine gradients should be judged on an actual print, and UV curing carries a distortion risk on stock below 3 mm (0.12 in), so thin board should also be sampled beforehand. Water-based ink is sensitive to workshop humidity, so for important orders use the proof as the acceptance reference rather than the on-screen file.

Wrap-Up

Plate-free digital printing turns press preparation from a physical workshop routine into a file routine at the computer. Solid file preparation shortens changeover time and cuts start-up waste. For press configurations, file requirements and sample runs, contact an advisor.