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OK4000

OK4000 Offline Label Quality Inspection System

The OK4000 is an offline quality inspection system for label inspection machines, label printing machines, and roll-label rewinding workflows.

It is designed for label applications where missing labels, waste labels, transparent labels, registration shifts, and barcode or QR-code issues must be detected reliably.

Key Features

100% full-width observation covering startup settings and the entire production process.
High-definition image quality based on high-resolution cameras.
Real-time image synchronization, stable during acceleration and deceleration of transparent materials.
LED light source for softer and more uniform surface-defect detection than strobe lighting.
Quick task setup, stable operation and compatibility with inspection machines for precise stop and rewind functions.
Ordinary light and contour light sources for missing-label, waste-label and transparent-label inspection scenes.
Can support variable barcode and QR-code inspection when configured for the project.

Typical Applications

Label inspection machines and offline label quality inspection workflows.
Label printing machines.
Transparent-label inspection where contrast against backing paper is low.
Roll-label rewinding, quality checking and waste rejection workflows.

Product Specifications

Item	Information
Nominal transverse resolution	0.15 mm.
Nominal longitudinal resolution	0.15 mm.
Designed inspection width	10 mm-600 mm.
Designed maximum speed	450 m/min.
Dot defect detection accuracy	Defect area > 0.2 mm².
Knife-line detection accuracy	Defect area > 0.1 mm × 5 mm.
Registration detection accuracy	Lateral > 0.15 mm; longitudinal > 0.25 mm.
System configuration	OK4000 line-scan camera, 64-bit octa-core industrial control computer, high-definition distortion-free lens, integrated light source and imported high-speed dual-channel acquisition card.

Selection Questions for Inquiry

What label material and backing paper color are used?
What are the detection width and line speed?
Which defects are unacceptable: missing label, blank label, waste label, color difference, registration shift or barcode issues?
Is transparent-label inspection required?
Is a waste rejection or automatic stop workflow required?

Tell Us About Your Application

Every production line is different. To recommend a suitable system, we need to understand your material, web width, line speed, machine layout, quality-control target and required functions.

Send us your project details, machine photos or sample defects. Our team will review your application and help you choose a practical solution for print inspection, web guiding, tension control or in-line measurement.

Request a Quote

Order Process

1️⃣ Share Your Application
Tell us your material type, web width, line speed, machine layout and quality-control requirements.

2️⃣ Review the Solution
We review the application and recommend a suitable direction for print inspection, web guiding, tension control or in-line measurement.

3️⃣ Confirm Configuration
We confirm the model, functions, installation conditions, technical details and quotation before the project moves forward.

4️⃣ Delivery & Follow-Up
We coordinate delivery, technical communication and after-sales follow-up for your project.

Clear. Practical. Reliable.

Frequently Asked Questions

Are you a factory?

Bainary is an independent technology and international trade company. We support overseas customers through application review, model selection, export coordination, and long-term project follow-up, backed by selected Chinese manufacturing resources.

What information should I send before asking for a quotation?

Please send material type, web width, line speed, machine type, installation position, defect type, sample photos or videos, required inspection target and available space. If the project is about web guiding or tension control, photos of the current machine section are also useful.

Can one inspection system work for all materials?

No. Transparent film, printed labels, paper, foil and nonwoven materials may need different cameras, lighting, sensors or installation positions. A short technical check before quotation reduces the chance of selecting the wrong system.

What is the difference between web inspection and 100% print inspection?

A web inspection system helps operators observe high-speed printed images more clearly. A 100% print inspection system automatically checks the full web and records defects with software. The right choice depends on defect type, speed, width and required quality control level.

Why do web guiding and tension control matter for inspection?

If the web moves sideways, wrinkles or tension changes heavily, the camera may not see the same print area consistently. Stable guiding and tension often make inspection more reliable.

Can Bainary help with non-standard inspection cases?

Yes. For uncertain cases, Bainary can collect samples, videos and defect descriptions first, then coordinate feasibility evaluation before formal quotation.

Which applications are suitable?

Flexible packaging, labels, paper converting, film and foil converting, nonwoven production, coating, lamination, slitting, rewinding, printing and bag-making lines are typical applications.

What happens after inquiry?

Bainary first checks the application information. If the requirement is clear, we recommend a product direction and quotation path. If not, we ask for missing line parameters, sample images or videos before pushing the project forward.