Single-Pass Digital Inkjet Printing Machine: How Fixed-Array Inkjet Delivers Continuous Production Speed
A single-pass digital inkjet printing machine uses a fixed array of industrial printheads spanning the full print width, depositing ink onto the substrate in a single continuous pass — hence the name. Unlike scanning (multi-pass) inkjet systems where a printhead carriage moves back and forth across the substrate, building the image in successive swaths, the single-pass architecture delivers the entire image in one motion. The result is throughput of 45 to 110 meters per minute on Goking's production platforms, compared to the hundreds-of-meters-per-hour speeds typical of multi-pass machines in corrugated applications.
Single-Pass vs. Multi-Pass: Understanding the Architectural Difference
The distinction between single-pass and multi-pass inkjet is not merely a speed difference — it is a fundamentally different approach to image formation that affects throughput, machine complexity, and the types of production the machine economically serves:
| Characteristic | Single-Pass Digital Inkjet | Multi-Pass (Scanning) Inkjet |
|---|---|---|
| Image Formation | Full width in one substrate pass | Built in successive carriage swaths |
| Throughput (Goking) | 45-110 m/min | 500-1500 m/h (8-25 m/min equivalent) |
| Printhead Count | 24-32 (Epson) or 4-18 (Seiko) | 8-32 (Epson) or 6-12 (Xaar) |
| Best Suited For | Mid-to-high volume production | Sampling, short runs, variable data |
| Mechanical Complexity | Fixed array, fewer moving parts | Reciprocating carriage, more wear points |
Inkjet Technology in Goking's Single-Pass Platform
The single-pass digital inkjet printing machine from Goking can be configured with two distinct inkjet printhead families:
Epson industrial inkjet printheads — Deployed in 24 or 32-head arrays, these deliver five-color CMYKW output at 600 or 1200 DPI across print widths of 400mm to 525mm (standard G-series) or 795mm to 1050mm (wide-format variant). Throughput ranges from 45 to 80 meters per minute depending on configuration. The Epson inkjet platform is among the most widely deployed industrial printhead technologies, providing broad availability of replacement heads, compatible inks, and technical service expertise.
Seiko industrial inkjet printheads — Configured with 4 to 18 heads covering print widths from 400mm to 1800mm at 70 to 110 meters per minute. The Seiko platform is typically specified for high-volume, wide-format corrugated production where linear speed and print width are the primary throughput drivers.
Both platforms use UV-curable CMYKW inks, cured immediately after deposition by integrated UV LED units. The five-color configuration — adding white to the standard CMYK set — is important for corrugated applications because printing on brown kraft and uncoated board without a white underbase results in dull, desaturated colors. The white channel lays down an opaque base layer before the CMYK colors print, ensuring color accuracy regardless of substrate tone.
The Speed Equation: Meters per Minute, Boards per Shift
Linear speed in meters per minute is the headline specification for inkjet throughput, but the operational metric that matters to converters is sellable boards per shift. Several factors determine how much of the rated linear speed translates into actual production output:
Board length and gap spacing — Shorter boards mean more gaps per minute, reducing effective throughput. The feed system's ability to maintain consistent board-to-board gaps determines how close to the rated speed the machine operates in practice.
Job change frequency — One of the defining advantages of digital inkjet is the sub-one-minute job changeover. On a flexo line, job changes consume 30-60 minutes of non-productive time each. On a Goking single-pass inkjet press, the operator recalls a stored digital file and resumes production immediately. Across a shift with multiple job changes, this time saving compounds into substantially higher effective throughput.
Setup waste — Digital inkjet produces a sellable first board because there is no ink-water balance to establish and no impression settings to dial in. Flexo lines typically consume multiple sheets during makeready, and those sheets represent lost material, lost production time, and waste disposal cost.
The 2-in-1 Advantage: GJ Series Dual-Mode Inkjet
Goking's GJ series introduces a configuration unique in the company's product line: a single digital inkjet machine that operates in both single-pass mode (for production volumes) and multi-pass mode (for sampling, prototypes, and short runs). This dual-mode architecture is significant because it eliminates the need to maintain separate equipment for high-volume production and short-run flexibility — a single capital investment covers both operational requirements. Explore the GJ series page for dual-mode configuration details.
Frequently Asked Questions
Q: Why does single-pass inkjet cost more than multi-pass for the same print width?
The fixed printhead array spanning the full print width requires more printheads than a scanning system that uses fewer heads moving across the substrate. Each printhead represents a cost, and the wider the print width, the more heads are required. However, the throughput difference — 45-110 m/min versus 500-1500 m/h — means single-pass produces dramatically more output per shift, and the total cost per printed board is typically lower for converters running sufficient volume to utilize the capacity.
Q: How does ink consumption compare between single-pass and flexo?
Digital inkjet deposits ink only where the image requires it — there is no ink film across non-image areas. Flexo applies a uniform ink film across the entire plate surface. Additionally, digital eliminates the ink left in the fountain and on rollers at the end of each job — a source of waste that accumulates across hundreds of job changes. For converters running high SKU counts, the reduction in ink waste from digital single-pass can be a meaningful operational saving.
Ink chemistry plays a decisive role in the performance of a single-pass digital inkjet printing machine. UV-curable inks polymerize instantly under LED exposure, adhering to both porous substrates like corrugated board and non-porous surfaces. The CMYK plus White configuration available on Goking single-pass systems enables printing on kraft and dark-colored substrates where a white undercoat is necessary for color vibrancy. Ink consumption per square meter varies with coverage density, but the digital-only application eliminates setup waste — there is no need to run scrap board through the machine to achieve color registration as required in flexographic printing. This translates to material savings that accumulate significantly over thousands of production runs across a typical monthly production schedule.
Explore Single-Pass Inkjet for Your Production
Compare Epson and Seiko inkjet configurations for your throughput requirements. Visit the single-pass overview and the Epson configuration detail page.
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