Industrial digital printing specialist
Independent specialist in industrial digital printing machines. I install, commission and service inkjet lines for ceramic tiles, steel coil, glass and every other surface that can be printed: from printhead setup and linearisation to ICC colour profiles and long-term service. 18+ years in the field, 20 countries.
AssembleX
I am Piotr Jędrzejczyk, an independent field engineer with 18+ years on industrial digital printing machines, and AssembleX Industrial Services is my company. You work directly with the person who sets up the heads, linearises the machine and builds the colour profile.
I work as a B2B contractor for machine builders (OEMs) and factories, short or long term: one project, a peak season or the full ramp-up of a new line.
Expertise
Installing a printer is half of the task. The other half is ensuring correct, repeatable print quality throughout its service life.
Hard setup of industrial piezo printheads, whatever the make: mechanical and electrical setup, alignment and registration, stitching between heads and modules, intensity balancing between heads, drop size and grey levels, jetting parameters, ink handling.
Linearisation makes the heads print a gradient exactly as the designer built it in the file, not as the ink, head and substrate happen to render it. Measured with a spectrophotometer, needed on every surface. Includes repair and re-tuning of an existing linearisation.
Setting the correct drop size, meaning the optimal kinetic energy of the ejected drop, is key to a correct print. Also grey-level setup, jetting parameters, ink handling, circulation and degassing. Wrong energy means satellites, misplaced drops and unstable jetting.
A profile makes the colour on a given surface the expected one, not a random one. The same ink looks different on every substrate, glaze and primer, so an ICC profile is built for each combination, and colour is controlled by measuring the product against the reference.
The print strategy covers more than resolution: also grey levels, drop sizes and the choice between grayscale and binary, matched to production conditions, needs and quality expectations. Plus RIP configuration and auditing customer files for the technology.
Defect analysis at every stage of production. A defect can originate in the file, in a layer applied before printing (a faulty primer or engobe may be invisible and still degrade the print), in the printing itself, or in ink fixing in the kiln or under UV. I identify its root cause, which reduces scrap and rejects.
Substrates
Industrial inkjet is one discipline, whatever the substrate. The head, the drop and the colour behave in the same way; the substrate changes the details, and these are quickly mastered.
Inkjet decoration, structural effects with glue and grit, through-body veining and vision-based alignment on large-format slabs. See the projects below.
UV inkjet printing directly on steel coil at line speed with 1-pixel (64 µm) accuracy, including the UV curing stage that fixes the ink straight after printing.
Commissioning, printhead calibration, repair and full service of a UV inkjet glass printer, including UV curing, with working knowledge of the glass printing process itself.
Start-up and service of UV inkjet machines for PVC panels (single-pass and flatbed), downstream lacquering and UV curing, and know-how on panel-specific problems such as static charge.
Direct printing on textile, labels, wood-based panels, decor and other surfaces. The technology stays the same; each material takes and holds ink differently, and I ramp up fast after OEM product training.
Projects
Below are eight selected projects with entirely different applications, across different branches of industry.
7 inkjet decoration printers, 1 dry grit applicator and 2 electronic tile-alignment systems (real-time angle detection instead of mechanical centering) commissioned across multiple glazing lines and synchronised into complete decoration systems; printhead setup and alignment; repair and tuning of linearisation for large-format slabs with marble and natural-stone graphics.
Result: Complete, synchronised digital decoration systems on multiple glazing lines of a high-volume plant, producing high-quality large-format slabs
Installation and commissioning of an industrial digital printer using UV inks, printing CMYK directly on coil at 60 m/min with 1-pixel (64 µm) accuracy; printhead alignment and registration; integration with the customer's coil processing line. Printing directly on steel coil is a highly innovative technology that is only now entering the market.
Result: High-speed, high-precision printing line with excellent colour quality, integrated into steel coil production
Verification of a new, enlarged grit-applying module at a tile factory. On site I carried out the inspection and reported my findings, including defects in the bonding of the piezo element to the lamella and in the system mounting the module to the machine. I also devised a repair method, and the corrected modification was introduced into series production.
Result: The corrected module distributes grit evenly and has been introduced into series production
Installation and commissioning of the client's first machine of this type. Printheads apply glue in the pattern of the design, grit is dosed by individually controlled vibrating blades only over the printed glue and bonds to it, and the excess is removed by suction. The bonded grit forms a decoration that is fixed in the kiln, leaving a structured surface.
Result: The client launched an entirely new product line with structural decoration, expanding its product portfolio
Installation of a printer coupled with an electronic slab aligner. Laser sensors measure the position of the slab edge, then a roller table lifts the slab off the belts. A slewing ring turns the table together with the slab, and the rollers shift the slab sideways onto the printer axis. The slab is lowered back onto the belts, verified again and fed into the printer. Eliminating mechanical squaring of large-format slabs prevents damage to their edges.
Result: Fewer edge and corner defects, with precise alignment of the slab to the printer axis
Commissioning of a set of three digital printers on a tile glazing line and their integration into one coherent system: the first prints engobe, the second the decoration, the third two different glazes, glossy and matt. In the example shown, the design is a marble pattern in which the two glazes are combined, with the matt glaze printed only on the veins. Engobe and glaze go only where they are needed, edge to edge. Only the digital application of glaze and engobe makes it possible to obtain graphics and surface effects that were never available before.
Result: Engobe and glaze saved through selective application; glossy and matt areas printed in a single pass
Installation and commissioning of a digital printer and a vision scanner. The scanner reads each slab, detects the background body colour and the veins made of a different ceramic body, and outlines the vein borders. It passes this data to the printer, which prints the background with one graphic and the veins with another, fitted exactly to the veins.
Result: Slabs that show a different body colour at any cut or drilled edge, imitating real marble all the way through
Start-up and commissioning of a UV inkjet flatbed plotter, followed by service and staff training. The carriage with CMYK head groups travels back and forth over the panel at 40 m/min, at a distance of 1 mm from its surface. UV pinning lamps placed between the colours partially cure the ink, which prevents coalescence, the merging of neighbouring drops of different inks. Five joined panels are printed in a single run, then separated and packed as one set.
Result: Machine started up and a completely new product launched on the market; operators trained
B2B
I adapt to your model: straight to the installation site, or first through a full onboarding at your factory.
I do the work myself, from the first survey to handover.
I can attend the product training at the machine builder, then travel straight to the end customer to install and commission the machine.
I complete your product training first, then work to your procedures and documentation standards.
I follow the client’s HSE and customer-specific requirements.
On-site assignments worldwide, short or long term, up to 9 months per year.
Site survey of utilities, cable routes, transport paths and layout, with proposed corrections.
Complete machine installation or integration into an existing production line: positioning and levelling, utilities, cable routes, ink lines, mechanical and electrical installation.
Heads, ink recirculation setup, calibration, colour and print quality, integration with the line.
FAT/SAT, production trials, safety validation.
Test records, procedures and operator training, so the line runs without me.
Remote support, return visits and continuous tuning after start-up.
Commissioning is not the finish line. Stable print quality over the months that follow is.
Troubleshooting and parameter checks over a remote link, with logs and print samples.
On-site visits on request, planned or urgent.
After a head replacement, ink change or drift: linearisation and ICC profile refreshed to keep colour on target.
Printhead diagnostics, repair and replacement; ink circulation and degassing systems.
AssembleX
Eighteen years in the field, from end-of-line automation to digital decoration lines.
AssembleX Industrial Services
Installation, commissioning and service of industrial inkjet lines for OEMs and factories worldwide.
Leading manufacturer of ceramic digital decoration lines
On site worldwide: installation, printhead hard setup and calibration, integration with line systems, FAT/SAT, production trials, operator training, SOP/PM and handover documentation.
Manufacturer of end-of-line automation for ceramic plants
Sorting lines, packaging machines, palletisers and automated guided vehicles, on site worldwide. Full scope from installation through production start-up and operator training, plus warranty and post-warranty service.
IT and office equipment service company
Assembly of PC-class computers and service of office automation equipment: photocopiers, printers and scanners (diagnostics, repair and maintenance).
Knowledge
Practical field notes on the topics that decide print quality.
Contact
I work on a B2B basis, with low risk for you: no employment obligations, and you pay for the days you need.
