SPT Konica 512i 4-Head Negative Pressure Flex Printer – Overview
The SPT Konica 512i 4-head negative-pressure printer is the balanced entry into industrial flex production: four KM512i heads fed by a controlled negative-pressure ink system that holds ink pressure constant at the nozzle plate – eliminating starvation streaks during long runs. On the 3200mm roll-to-roll chassis with automatic feeding and take-up, it is built for daily banner volumes with minimal operator attention.
The SPT-512I-4HNP runs daily production on flex banners, vinyl hoardings, backlit flex displays, one-way vision film, mesh banners, PVC vinyl stickers & vehicle graphics, canvas, reflective media and outdoor advertising cloth. Solvent prints are waterproof and UV-stable for long outdoor life, and the machine’s service ecosystem is supported across India.
Key Features
- 4 × Konica KM512i piezoelectric industrial heads
- Negative-pressure ink supply – stable flow, fewer dropouts, less maintenance
- 3200mm (126 in) print width, roll-to-roll
- Multi-zone heating & drying for fast solvent curing
- Automatic feed & take-up with media tension alignment
- CMYK solvent set – up to 720 dpi, outdoor-durable output
- Heavy-duty industrial frame for continuous operation
- USB 2.0 workflow, PhotoPrint / MainTop RIP
Print Speed (4-head negative pressure · class figures)
| Print Mode | Output Speed |
|---|---|
| Draft mode (2 pass) | up to ~140–160 m²/h (class) |
| Production mode (3 pass) | up to ~90–120 m²/h (class) |
| Quality mode (4 pass) | up to ~60–80 m²/h (class) |
Speeds are manufacturer test-condition figures; real output varies with media, RIP settings and pass count. Rows marked (class) are platform-class figures confirmed at order time.
Technical Specifications
| Model | SPT Konica 512i (4-head, negative pressure) |
| Printing Technology | Piezoelectric inkjet |
| Print Heads | 4 × Konica KM512i |
| Ink Supply | Negative-pressure system |
| Print Width | 3200 mm (126 in) |
| Colours | CMYK |
| Ink Type | Solvent ink |
| Max Resolution | up to 720 dpi |
| Media Handling | Automatic feed & take-up |
| Heating | Multi-zone heating & drying |
| Interface | USB 2.0 |
| Power Supply | AC 220V ±10%, 50/60Hz |
| Operating Environment | 20–28 °C recommended, 20–80% RH (non-condensing) |
Applications
Typical work: flex banners, vinyl hoardings, backlit flex displays, one-way vision film, mesh banners, PVC vinyl stickers & vehicle graphics, canvas, reflective media and outdoor advertising cloth. The machine is at home in flex printing units, signage fabricators, advertising agencies, event & exhibition graphics workshops and outdoor media houses.
Why Buy from Unified Engineering Dynamics?
- Genuine imported SPT machines – original factory configuration with standard electronics and manufacturer-backed warranty support, not grey-market refits.
- Complete installation & training – on-site setup, RIP software installation, media profiling and operator training included.
- After-sales support – Indian service engineers, genuine Konica print heads and spare parts in stock, remote diagnostics.
- Consumables supply – matched flex solvent inks, cleaning solution and spares available from our Printing Inks and Printer Spare Parts range.
Need the latest price, a demo print or an EMI quotation? Contact our team today – we reply within one working day with a detailed offer including installation and ink start-up kit options.

Reviews
There are no reviews yet.