InkBags repairs the printhead in the Boxmaking Machinery BM300. Single-pass packaging press built directly around the HP FI-1000, printing bags, boxes, mailers and envelopes at up to 27 m/min. Recovery is realistic when the fault is dried ink, blockage, contamination or air-lock; it is not when a die segment is electrically dead or the nozzle plate is damaged. Send a nozzle test print and we tell you which one you have before quoting.
Boxmaking Machinery BM300 printhead specification
Parts and recovery procedures do not transfer between printhead families, even when both are HP thermal inkjet — so the engine inside the machine is the first thing to establish.
| Machine | BM300 — Boxmaking Machinery GmbH, Germany |
| Print engine | HP FI-1000 Fixed Imager |
| Print width | 297 mm |
| Resolution | 1200 × 1200 dpi |
| Max speed | Up to 27 m/min |
| Ink | HP pigment, CMYK |
| Typical substrates | Cardboard, paper bags, envelopes, mailers, boxes |
What printhead failure looks like on a BM300
- White stripe down the length of a run of bags or boxes — the classic dead-sector signature on a fixed head.
- Paper dust and fibre from cardboard substrates loading the wiper and capping station, then transferring back onto the nozzle plate.
- Density loss on one channel after the machine has stood over a weekend without a proper cap-down.
- Ink starvation when running long, heavy-coverage jobs on absorbent kraft board.
Photograph the nozzle test print before running any more recovery cycles. Repeated aggressive purging on a head that has already dried out can turn a recoverable fault into a replacement.
How we approach a BM300 printhead
The BM300 runs uncoated, dusty substrates — kraft board and paper bags — so the dominant failure driver on this machine is abrasive fibre contamination of the nozzle plate, not ink chemistry. Service therefore always includes the wiper and cap assembly, not just the head.
Because the BM300 prints the full 297 mm in one pass at up to 27 m/min, a partially blocked die shows up as a visible defect on every single piece — there is no second pass to mask it.
We check the ink supply path end to end on this machine: on heavy-coverage packaging work, starvation at speed damages heads that were otherwise healthy.
What the service covers
Diagnosis
Failure-mode identification from the nozzle test print, plus a straight answer on whether recovery is realistic.
Nozzle recovery
Deep flushing of the ink path and restoration of blocked nozzle areas, matched to the failure mode.
Ink system service
Capping, wiping and supply-side inspection — the parts that usually caused the failure in the first place.
Replacement printheads are available where recovery is not viable, along with original and compatible ink, so a machine that cannot be recovered does not sit idle waiting on a separate supplier.
Pricing and turnaround are quoted per case, because both depend on the failure mode and on whether the ink delivery system needs work as well.
Boxmaking Machinery BM300 printhead repair FAQ
My BM300 prints a white line down every bag. Is the head dead?
Not necessarily. On the BM300 the most common cause is fibre and paper dust contamination on the nozzle plate plus a wiper that is no longer cleaning properly — that is recoverable. A genuinely dead die segment is also possible. A nozzle test print tells the two apart.
Do you service the BM300 ink system as well as the printhead?
Yes. On a dusty-substrate machine like the BM300, servicing the head without servicing the capping, wiping and ink supply usually means the same fault returns within weeks.
Can InkBags supply ink for the BM300?
Yes — both original HP pigment ink and our compatible pigment ink for FI-1000 based machines. See the ink page for the request form.
Can the Boxmaking Machinery BM300 printhead be repaired or does it need replacing?
Both happen. Blockage, dried ink, contamination and air-lock recover in a large share of cases; electrical or physical damage to the die does not. The nozzle test print tells the two apart before any money is spent.
How much does Boxmaking Machinery BM300 printhead repair cost?
It is quoted per case, because the cost depends on the failure mode and on whether the ink delivery system also needs service. Send the nozzle test and you get a scope and a price up front.
Other machines we service
HP
HP FI-1000 printhead repair
The 297 mm HP Fixed Imager 1000 printhead itself — the part that fails in every FI-1000 based machine, whatever badge is on the front.
Printware / iJetColor
Printware iJetColor Pro 1175P printhead repair
High-speed envelope and direct-mail press built on the HP FI-1000, launched by Printware in 2020.
Printware / iJetColor
Printware iJetColor Pro PXG printhead repair
Packaging-oriented member of the iJetColor Pro series using the HP FI-1000 fixed imager, launched at PackExpo 2021.
All machines: printhead repair overview.
Get a diagnosis for your BM300
Send a nozzle test print and a short note on what the machine was doing when the fault appeared.