What Print Width Do You Need? 900 mm, 1,200 mm and 2,500 mm Corrugated Presses Compared

When you start sourcing a digital corrugated press, the question a good sales engineer asks first is rarely about speed or colour. It is about the flat size of your largest blank. Print width is the constraint everything else is measured against: if the press cannot span your board, no amount of speed or colour management helps. This guide groups the Ruisheng line-up into four width classes — 530 mm, 900 mm, 1,200 mm and 2,500 mm — and shows what each one is built for, using published machine specifications.

Measure the box before you shortlist the press

Print width is the span the head array can cover as the board travels through the press, and it follows directly from the flat size of the finished carton. A standard courier box usually opens out to 400-700 mm; appliance shippers can exceed 1,200 mm; furniture and building-material packs often approach 2,000 mm once flattened.

Width and speed pull against each other. With a given generation of head technology, a machine covering 530 mm and one covering 2,500 mm do not sit in the same throughput class. So fix the width first, then compare speed and ink within that width class — not the other way round.

530 mm and 900 mm — narrow and fast

If your work is mostly standard courier boxes and small-format cartons, a narrow press converts directly into throughput.

• RS2500-E32S — 530 mm (20.9 in) in high-speed mode, up to 200 m/min (656 ft/min), 32 high-precision piezo heads, output above 1,200 × 150 dpi.
• RS1800-HPA3 — 900 mm (35.4 in), 10-30 m/min (33-98 ft/min), three high-precision thermal inkjet heads, at least 1,200 × 300 dpi. Leading-edge auto feeder with a zoned vacuum platform; board thickness 3-40 mm (0.12-1.57 in); roughly 2,950 × 2,000 × 1,860 mm (116.1 × 78.7 × 73.2 in) at 2,500 kg (5,512 lb).

900 mm covers the majority of courier and personal-care cartons. Per the published FAQ, the RS1800-HPA3 targets frequent changeovers at a few thousand to tens of thousands of boxes a day with specifications still moving; for very long runs of one fixed design, conventional printing still wins on unit cost.

1,200 mm — single pass, high throughput

Once your dominant blank opens out beyond 900 mm, move up a class. Both single-pass machines in the RS2500 range are specified at 1,200 mm in high-speed mode:

• RS2500-E72G — 1,200 mm (47.2 in), up to 150 m/min (492 ft/min), 72 heads, above 600 × 300 dpi.
• RS2500-E36S — the same 1,200 mm (47.2 in) width, up to 106 m/min (348 ft/min), 36 heads, above 600 × 300 dpi.

Both are single pass: the board travels at constant speed under a fixed head array and the full image is laid down in one pass. That suits appliance shippers and large e-commerce cartons — mid-width work where daily output matters. The 72-head and 36-head configurations differ mainly in the speed each can reach at the same width.

2,500 mm — wide-format scanning

Wide-format machines take the other route. A carriage carrying the heads traverses the beam while the board indexes forward, which is how they reach 2,500 mm:

• RS2500-E16 — auto feed up to 2,500 × 1,350 mm (98.4 × 53.1 in), manual feed at 2,500 mm (98.4 in) wide with unlimited length; up to 600 m²/h (6,458 sq ft/h); 16 heads; above 360 × 1,200 dpi.
• RS2500-E8 — 2,500 mm (98.4 in) feed width, unlimited length; up to 600 m²/h (6,458 sq ft/h); 8 heads; above 360 × 600 dpi.
• RS2500-E20UV — same format envelope as the E16; up to 90 m²/min; 20 heads; above 360 × 600 dpi; dedicated UV-curable ink in CMYK plus white.
• RS2500-R16UV — same format envelope; up to 400 m²/h (4,306 sq ft/h); 16 heads; above 360 × 600 dpi; UV-curable ink in CMYK or CMYK plus white.

This class exists for boards that simply will not fit a narrow press: flattened furniture and building-material panels, and long boxes you want to run in one piece without splicing. One caveat — scanning throughput is quoted as area per hour (m²/h) rather than linear speed (m/min), so convert your own daily square metres instead of comparing m/min figures across classes.

The detail people miss — feed length

Width gets the attention; length decides whether you can run unattended. On the RS2500-E16, E8, E20UV and R16UV, automatic feeding tops out at 2,500 × 1,350 mm. Boards longer than 1,350 mm can go through on manual feed, where length is unlimited but the cadence follows the operator. The RS1800-HPA3 and RS2500-E8 are specified with unlimited length. Note down what the auto feeder will actually accept — it is often more decisive than the width figure alone.

1.9 m all-in-one — folding cartons and paperboard

If you make folding cartons and card packaging rather than corrugated, the width reference changes. The RS1900-E16 print, laminate and cut line runs 1.9 m (74.8 in) wide with unlimited length, 80-160 m²/h (861-1,722 sq ft/h), 16 high-precision piezo heads at 360 × 600 dpi or finer. It handles grey-back board, white card, coated paper and art paper in the 50-400 g range, and weighs about 4,300 kg (9,480 lb). Its laminating and cutting units work at 1.6 m, which is the practical ceiling on finished width. As the product notes state, corrugated board belongs on the RS1800 or RS2500 series — this machine is built for paper-based stock.

Three steps to your width

• Step 1 — find the peak, not the average. Rank the large cartons you ran over the past year by flat width and work from the top of that list. You buy width for the peak.
• Step 2 — check whether the auto feeder can take it. If the width fits but the length exceeds 1,350 mm, decide up front whether manual feeding works for you or the job needs a different machine.
• Step 3 — compare throughput and ink inside the width class. At 1,200 mm, choose between the E72G and E36S on daily volume. At 2,500 mm, choose between the water-based E8 and E16 and the UV E20UV and R16UV on rub and moisture resistance.

Two questions that come up

Does over-specifying width cost you? Yes. A wider machine carries a longer frame and beam, and footprint and weight rise with it — the RS2500 series is about 5,000 kg (11,023 lb) against roughly 2,500 kg (5,512 lb) for the RS1800-HPA3. If your work stays inside 900 mm, a narrow press keeps floor space and running cost predictable.

How should you read resolution figures? The published number is machine output resolution, a different measure from the physical resolution of the head. The RS1900-E16, for example, is specified at 360 × 600 dpi or finer output with a 2,400 dpi head. Judge image quality from an actual print sample: send your usual stock, including the lightest and heaviest grammage you run, and have it printed before you confirm the configuration.

In short

Width sets the class; speed and ink pick the model inside it. Put three numbers on the table — peak flat size, what the auto feeder accepts, and daily square metres — and the shortlist usually narrows to one or two machines. Where doubt remains, print a sample on your own stock. For configuration options, site requirements and commercial terms, contact our consultants for a quotation and technical documentation.