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Web Inspection System for Printing | 100% Inline Print Defect Detection | SICHANGO
Web Inspection System
for 100% Inline Print Defect Detection
Catch colour shifts, misregistration, streaks and missing print at full press speed up to 600 m/min — on flexo, gravure, label and packaging presses worldwide.
At 300 m/min, a press produces over 200 metres of defective print in the 40 seconds it takes an operator to notice visually. A single customer complaint on a pharmaceutical label or food packaging can trigger a full product recall. Manual inspection at high speed is guesswork.
Your Eyes on the Web — at Every Metre, Every Shift
SICHANGO web inspection systems are professional machine vision platforms built for the print and converting industry. From narrow web label presses to wide web gravure lines, they deliver 100% inline print quality control — monitoring every centimetre of the web, alerting operators and logging defect positions within milliseconds.
1200 MP High-Definition Imaging
Advanced CCD sensors and precision optics reveal defects invisible to the naked eye at full production speed.
AutoScan — Zero Setup per Job
AutoScan sweeps the full print width on job start, building a golden reference image automatically. No manual setup needed.
30× Optical Zoom
Premium optical zoom from 1× to 64× digital. Zoom into any detected defect without stopping the press for forensic review.
4 Web Inspection Models — Narrow Web Label to Wide Web Packaging
Every SICHANGO print inspection system ships factory-configured to your press make, model and web width. Narrow web video inspection systems for label presses, wide web inspection systems for packaging and gravure lines.
Scout 3 World's Smallest
The world's smallest video web inspection system for narrow web rotary and flexo label presses. HD colour inspection and registration mark monitoring — 4-button operation, zero training curve.
Best ForLabel, Tag, Narrow Web
CameraHD Colour CCD
LensLED Strobe Lens
View Size50 × 30 mm
Max Speed600 m/min
Electric RailNo
Interface4-Button
Overseer 100
Real-time inline print defect detection at 600 m/min. Built for flexo and digital printers needing reliable 100% print quality monitoring. Front and back dual-camera configuration available.
Best ForFlexo, Digital, Mid Web
LensLED Strobe Lens
View Size100 × 75 mm
Max Speed600 m/min
Electric RailYes
Dual SideOptional
InterfaceTouch Screen
Observer 4000 Most Popular
Top-tier inline print inspection with 1200 MP sensor, 30× optical zoom and dual-display. Supports flexo, gravure, offset and rotary presses — the most-specified video web inspection system for demanding label and packaging applications.
Sensor1200 MP HD
LensLED Strobe Lens
View Size100 × 75 mm
Optical Zoom30× (1× to 64× digital)
Max Speed600 m/min
Electric RailYes
DisplayDual Screen + Remote Panel
Overseer 200 Dual Side
Front-and-back simultaneous web inspection. Large 200×120 mm view, programmable inspection points (PPS), multi-touch GUI and full X/Y AutoScan. Optional UV light for special material inspection. The complete roll-to-roll print inspection solution.
View Size200 × 120 mm
LensLED Strobe Lens
Max Speed600 m/min
Electric RailYes
UV LightOptional
Sensor SyncYes
Dual ConfigFront + Back Simultaneous
How a Web Inspection System Works
From press start to defect report — the complete inspection workflow in 5 stages.
Camera Capture
High-speed CCD cameras capture continuous frames of the moving web.
Reference Build
AutoScan generates a golden reference image from the first approved repeat.
Image Processing
Frame-by-frame comparison using advanced vision algorithms detects pixel-level deviations.
Defect Alert
Defects trigger instant visual and audible alarm with exact web position logged.
Report & Action
Full inspection log with defect images exported for QC sign-off and rewinder splicing.
Which Web Inspection System Is Right for Your Press?
Select your press type and quality concern — get an instant model recommendation.
What Every SICHANGO Print Inspection System Detects
Model-by-model capability matrix — use this to specify the right inline print quality control system for your application.
| Defect / Inspection Type | Scout 3 | Overseer 100 | Observer 4000 | Overseer 200 |
|---|---|---|---|---|
| Colour Deviation (Delta-E) | ||||
| Registration Error (X/Y axis) | ||||
| Missing Print / Ink-Out | ||||
| Streaks & Scratches | ||||
| Ink Smear / Marking | ||||
| Front + Back Simultaneous | ||||
| UV Light Special Material | ||||
| Sensor Synchronization | ||||
| AutoScan / Auto Reference Build |
✦ SICHANGO inline web inspection systems. ✔ Excellent ◑ Adequate ✘ Poor/Not applicable.
Web Inspection Systems for Every Print Segment
Installed on presses from Mark Andy, Nilpeter, Windmöller & Hölscher, BOBST and other leading manufacturers worldwide.
Label & Tag Printing
Narrow web flexo and rotary label presses. Pharmaceutical, cosmetic, food & beverage label inspection system.
Flexible Packaging Inspection
Wide web gravure and flexo packaging lines. Film, foil, laminate and stand-up pouch print quality monitoring.
Pharmaceutical Print Inspection
Blister foil, leaflets and secondary packaging requiring 100% inline print quality control for GMP compliance.
Corrugated & Carton
Wide-format pre-print and direct corrugated board inspection. Point-of-sale display and folding carton monitoring.
Gravure Print Inspection
High-speed rotogravure for film, security printing and publishing. 1200 MP sensor resolves fine gravure cell detail at full speed.
Digital & Hybrid Press
Inkjet and toner digital presses where nozzle failures and streaks must be caught inline in real time.
How Fast Does a Web Inspection System Pay for Itself?
Adjust the inputs to match your operation. Most operations recover the full investment within 2–6 months.
Your Operation
Estimated Annual Savings
Estimate only. System price assumed $15,000–$45,000 depending on model.
Model Comparison at a Glance
Key specifications across all four models — choose the right capability level for your production environment.
Complete Model Specification Chart
Full system and software feature comparison across all 4 models — including Field of View, resolution, lens, movement type and software functions.
Y = Supported · \ = Not applicable · Moto = Motorised · PPS = Programmable Position · ACS = Auto Colour Scan
Designed to Fit Your Existing Press — Not the Other Way Around
Factory-prepared mounting kit for your press before shipment. Standard installation: approximately 2 hours.
🔩 Mechanical Integration
- Camera housing sized to your web width and print repeat
- Precision encoder coupling to press main drive shaft
- Stainless steel mounting frame fits any press beam profile
- Adjustable cross-web traverse for camera positioning
- Vibration-isolated mounts for high-speed stability
⚡ Electrical & Signal
- 24 VDC or 240 VAC supply available
- Digital I/O for press alarm, pause and stop signals
- Encoder input: 5V TTL or RS422 differential
- Defect marker/labeller interface output
- Ethernet connection to plant network
💻 Software & Data
- Windows-based inspection software
- PDF inspection reports with defect images
- CSV/XML data export
- Job library stores reference images for repeat jobs
- Remote access via remote software for SICHANGO support
Compatible Press Brands: Mark Andy · Nilpeter · BOBST · Windmöller & Hölscher · Comexi · Uteco · Rotoflex · Gallus · Edale · Gidue · Flexotecnica · Muller Martini — and all other narrow & wide web printing presses.
Web Inspection System — Frequently Asked Questions
Technical questions buyers ask before specifying a print inspection system for their flexo, gravure or digital press.
What is a web inspection system in printing?
What is the difference between a narrow web and wide web inspection system?
What printing processes does a SICHANGO web inspection system support?
What print defects can the system detect?
How fast can the system detect a defect?
How does AutoScan work?
How long does installation take?
What is the difference between inline and offline print inspection?
Ready to Install a Web Inspection System?
Tell us your press make, model, web width and primary print process — we'll recommend the right inline print inspection system and confirm lead time within 24 hours.