Printing unit, housing element for same, and method for operating a printing unit
The housing element with an air guide contour in the pressure unit addresses ink mist deposition by creating turbulence, enhancing ink mist extraction and reducing maintenance needs in digital printing presses.
WO2026131753A1PCT designated stage Publication Date: 2026-06-25BHS CORRUGATED MACHINEN UND ANLANGENBAU GMBH
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- BHS CORRUGATED MACHINEN UND ANLANGENBAU GMBH
- Filing Date
- 2025-12-16
- Publication Date
- 2026-06-25
AI Technical Summary
Technical Problem
Ink mist produced during printing in a digital printing press often settles on housing components, risking contamination of the paper web and requiring frequent cleaning.
Method used
A pressure unit with a housing element featuring an air guide contour aligned with the paper web to create turbulence, guiding airflow along the paper web and into an extraction chamber, which passively draws in air and ink mist, reducing deposition on the housing element.
Benefits of technology
The airflow turbulence effectively extracts a larger portion of ink mist directly, minimizing accumulation and extending maintenance intervals by preventing ink mist from settling on the housing element.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure EP2025087266_25062026_PF_FP_ABST
Abstract
The invention relates to a printing unit (4) for a printing machine (2), comprising one or more print heads (10), for printing ink (14) onto a paper web (12), which printing unit has a suction chamber (22) downstream of the print heads (10), for suctioning ink mist (18), the printing unit having a housing element (26) which delimits the suction chamber (22), wherein the housing element (26) has an air-guiding contour (30) which is oriented towards the paper web (12) such that a flow path (P2) is formed which leads along the air-guiding contour (30), over the paper web (12) and further into the suction chamber (22). The invention also relates to a corresponding housing element (26) and to a method for operating the printing unit (4).
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