Gravure (also called rotogravure) uses an engraved cylinder to transfer ink directly from a liquid reservoir onto the substrate. The cylinder's surface is engraved with millions of tiny cells that hold ink; a doctor blade wipes the non-engraved surface clean, leaving ink only in the cells, which transfers to the web. The cell depth and size determine how much ink is deposited — making gravure one of the most precise and consistent print processes for long runs.
Full gravure printing line or wide-format gravure press
The Basics
- Gravure cylinder
- A steel or steel-based roller engraved with a pattern of cells, then chrome-plated for durability. Each color in the design requires its own cylinder.
- Doctor blade
- A thin blade that wipes excess ink from the non-recessed surface of the gravure cylinder, leaving ink only in the engraved cells.
- Cell volume
- The geometry of each engraved cell — its depth, width, and shape — determines how much ink it holds and how much is transferred to the substrate.
- Impression roller
- A rubber-covered roller that presses the web against the gravure cylinder to ensure good ink transfer from the cells to the substrate.
Close-up of gravure cylinder and doctor blade assembly
Cylinder Engraving Methods
Electromechanical Engraving
A diamond-tipped stylus vibrates at controlled frequencies, cutting cells directly into the cylinder surface. The most common method for flexible packaging today.
Chemical Etching
An acid solution etches cells into a coated cylinder surface through a mask. A legacy process largely replaced by electromechanical engraving.
Laser Engraving
A laser ablates cell geometry directly into the cylinder surface. Enables very fine detail and unique geometric possibilities.
Advantages of Gravure
- Consistent density
- Because the engraved cells transfer a precise, repeatable volume of ink, gravure produces exceptionally consistent color density and tonal gradation across long runs.
- Long run economics
- Gravure cylinders are durable and run millions of impressions before re-engraving is needed, making per-unit costs very low at high volumes.
- High line speeds
- Gravure runs at very high web speeds — up to 1,000+ m/min in some installations — making it well-suited to high-volume production.
Considerations
- Cylinder cost
- Gravure cylinders are expensive to produce and require a full new set for every design change — making short-run work uneconomical.
- Make-ready time
- Lengthy setup times compared to digital printing; best suited to runs where setup cost is amortized across large volumes.
- Solvents
- Gravure inks are typically solvent-based, requiring drying ovens and solvent recovery or destruction systems to manage emissions.
Multi-color gravure press showing multiple print decks in sequence
Gravure printing selection and troubleshooting involves additional considerations that benefit from SME review before this page goes live.