Anilox Rolls for Flexographic Printing 

An anilox roll is a precision-engraved metering roll used in flexographic printing to transfer a controlled, repeatable volume of ink from the ink chamber to the printing plate. The roll's surface is covered with microscopic engraved cells, measured in billions of cubic microns (BCM) that fill with ink, are wiped clean by the doctor blade, and release a consistent ink film to the plate with each revolution. The precision of the anilox roll is the primary factor controlling ink density, color consistency, and overall print quality.

 Both perform the same ink metering function, but the format is different. A conventional anilox roll is a solid, self-contained roll with its own steel or aluminum core. An anilox sleeve is a thin-walled cylinder designed to mount over a lightweight air mandrel, allowing it to be slid on and off the press rapidly. Sleeves are preferred in modern flexographic presses where minimizing changeover time is operationally critical. ARC International manufactures both formats to the same engraving and coating specifications. 

BCM stands for Billion Cubic Microns — the standard unit of measurement for anilox cell volume. It describes the total ink-carrying capacity of the roll's engraved surface per square inch. A higher BCM indicates a greater volume of ink delivered per impression, which is appropriate for solid flood coats, white ink laydown, or heavy corrugated printing. Lower BCM values support fine graphic work and process color printing where a thin, controlled ink film is required. BCM must be matched to the ink, substrate, and printing application to achieve optimal results.

Five variables govern anilox roll selection: line count (LPI), cell volume (BCM), cell geometry, surface coating, and roll construction. Line count and BCM define how much ink the roll carries; cell geometry controls how ink fills, releases, and cleans; the surface coating (typically ceramic applied via plasma spray) determines wear resistance and service life; and roll construction — including core material, balance, and TIR (Total Indicator Runout) tolerances — ensures consistent performance across the press width. ARC International's engineering team evaluates all five variables in combination when specifying rolls for a customer's press and application.

 ARC/PRS engineers four proprietary cell geometries, each designed for a distinct printing requirement. OC™ Opticell™ is the highest-capacity geometry, utilizing a 60° hexagonal pattern for maximum BCM and coverage applications such as flood coats and corrugated printing. HV™ High Volume uses a 70° cell angle with a rounded U-shaped bottom to balance high volume with improved doctor blade support and reduced cell plugging at speed. HG™ High Graphic employs multi-hit laser engraving to produce consistent, clean cells at high line counts for process color and fine detail work. HD™ High Definition uses layered 3-D laser engraving to create hybrid cell structures engineered for premium flexographic applications where print quality must compete with offset or gravure. Selecting the right geometry — not just the right volume — is one of the most consequential decisions in press optimization. 

 Cell geometry directly influences the contact dynamics between the doctor blade and the roll surface. Geometries with steep cell walls and tight opening angles — such as those optimized for maximum volume — create higher friction at the blade tip and can accelerate wear. HV™ geometry was specifically developed to address this: its wider cell opening and rounded cell bottom allow ink to circulate more freely and reduce the shear force on the blade, extending blade life and reducing ink foaming at high press speeds. Matching geometry to blade type and press speed is essential to achieving consistent wiping without premature blade or roll surface degradation. 

ARCJET™ is ARC International's proprietary ceramic coating process applied to the anilox roll surface prior to laser engraving. The coating is plasma-sprayed to create a high-density, precision-ground ceramic layer that provides the hardness and dimensional stability required for accurate laser ablation of cell structures. A higher-quality coating produces cleaner, more consistent cell walls, which translates directly to more accurate and repeatable ink metering. ARCJET™ coating is standard across ARC's anilox roll product line and is a key factor in the long service life of ARC rolls.

Yes — cleaning method must be matched to the ink chemistry. Water-based ink systems generally respond well to enzymatic or alkaline aqueous cleaners applied via ultrasonic bath or on-press wash systems. UV-cured inks require chemistry specifically formulated to break down photoinitiated-crosslinked residue, which standard aqueous cleaners cannot effectively dissolve. Solvent-based systems typically clean more readily but require appropriate ventilation and waste handling. In all cases, mechanical cleaning methods such as abrasive media blasting should only be performed by qualified service providers, as improper technique can damage cell walls and ceramic coating. ARC/PRS recommends reviewing cleaning protocols when switching ink chemistry or when DotScope® inspection reveals progressive plugging not responding to standard on-press cleaning.

 The primary indicators of anilox roll degradation are measurable: declining ink density at a given press setting, increasing makeready time to achieve color targets, visible cell plugging under magnification, or a measured reduction in cell volume via a DotScope® or equivalent inspection instrument. Because cell volume loss is gradual, many printers do not identify the problem until it has significantly impacted press efficiency and ink consumption. ARC recommends establishing a routine inspection protocol — measuring BCM at defined intervals — so that roll condition is tracked objectively rather than assessed by subjective print observation alone. 

DotScope® is ARC International's digital anilox cell inspection system. Using high-resolution optical imaging, DotScope® captures and analyzes cell structure to measure actual cell volume (BCM), identify plugging patterns, and detect surface wear or damage. The system allows press operators and pressroom managers to make data-driven decisions about cleaning protocols, roll rotation, and re-engraving schedules — replacing the guesswork that has historically driven anilox management. Routine DotScope® inspection also supports warranty documentation and provides a baseline record when new rolls are placed into service. 

Cell plugging occurs when dried or polymerized ink, coating residue, or particulate contamination accumulates within the engraved cells, reducing their effective volume and disrupting consistent ink transfer. The primary causes are insufficient end-of-run cleaning, ink chemistry incompatibility, and running cell volumes that are too small for the ink viscosity in use. Prevention involves a disciplined cleaning protocol matched to the ink system — water-based, UV, or solvent — combined with periodic deep cleaning using chemistry appropriate to the contamination type. BFT Carbon fiber chamber systems, with their smooth internal surfaces and full-length blade contact, reduce contamination accumulation during production and simplify end-of-run cleaning.

BFT Carbon fiber chamber systems are precision-engineered enclosed doctor blade chambers manufactured from carbon fiber composite. Compared to traditional aluminum chambers, carbon fiber construction provides a superior stiffness-to-weight ratio, which translates to more consistent blade pressure across the full length of the anilox roll — a critical factor in achieving uniform ink wiping and reducing streaking on wide-web presses. BFT Carbon chambers feature an ultra-smooth internal surface that resists ink adhesion and simplifies cleaning, reducing both ink waste and downtime. PRS/ARC offers the BFT Carbon line including Touch2Go, Clamp2Go, and Easy2Remove configurations, as well as BFT Flexo digital integration for real-time press monitoring.

 Both are laser engraving technologies used to ablate cells into the ceramic surface of an anilox roll, but they operate differently. Thermal laser engraving uses a CO₂ or Nd:YAG laser to vaporize ceramic material through heat. Fiber optic (fiber) laser systems deliver energy via fiber optic cable and offer greater precision and consistency at high line counts, with tighter control over cell depth and wall geometry. ARC International operates both thermal and fiber optic laser platforms, which allows the engineering team to match the engraving method to the geometry specification and application — particularly relevant for HG™ and HD™ geometries requiring multi-hit or layered engraving. 

For corrugated post-print flexographic applications, PRS/ARC manufactures glue applicator rolls for corrugated board production and converting, rubber wiper rolls for ink distribution and metering control, rubber feed rolls for sheet feeding with proper alignment and traction, and meter rollers for coating, adhesive, and liquid application systems. Each of these rolls is manufactured to press-specific dimensional tolerances and material specifications — rubber durometer, surface finish, crown profile, and TIR — to ensure compatibility with the anilox system and the press OEM's requirements.