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DOT-S

The DOT-S is an advanced dropwatching instrument fully integrating our big-data software. It already supports the most common printheads and driving electronics, and can be customized for special applications.

DOT-S Key features

Click on the features to display additional information.

DOT-S Key features
Enclosure Printhead Holder Mist Sensor Active Dropcatcher Motorized 3-Axis System On-Board Computer Optical Module

Enclosure

Several enclosure options are available to ensure the operator's safety:

  • No hood for installation in an existing fumes hood.
  • Transparent or UV-proof hood for standalone use. In this configuration, the fumes outlet must be connected to a centralized ventilation or a separate extractor.

Printhead Holder

The printhead holder is fitted to support the selected printhead. This part is precisely machined to ensure a reproducible positioning without any alignment procedure. All the most common printhead models are already supported, and customizations are available for special cases.

Mist Sensor

A laser-scattering sensor is mounted within the enclosure to monitor sub-micrometer aerosols. It is used to monitor the misting for optimizations as well as to ensure the operator's safety.

Active Dropcatcher

An active dropwatcher is mounted below the printhead. It generates an airflow ensuring that the ejected drops are properly collected and discarded.

Motorized 3-Axis System

All axes are motorized to ensure a fully repoducible positioning on the nozzles. It is fully integrated, which allows to automatically scan all nozzles for stability measurements.

On-Board Computer

A powerful computer as well as all the necessary electronics are integrated into the back of the instrument. The dedicated computer manages all the controls and databases directly.  No installation or software is required to access it since it generates a web interface accessible from any device within the network.

Optical Module

The optical module consists of a camera with a zoom combined with a strobe and triggering system.

The optics typically allow to reach spacial resolution below 0.5µm with with single-flashes below 100ns. In addition, the angle of the camera and strobe can be adjusted in the 0-6° range to fit the different nozzleplate shapes.

An automatic position and spatial resolution calibration is implemented to automatically map the FOV to the nozzles after changing the zooming factor or angle.

Specifications

Device Specifications
General information
Dimensions (L x W x H)60 x 40 x 40cm
Weight35 kg
Power supply24VDC 10A (power supply provided)
MotionMotorized XYZ axis with axial play <5µm
HoodProtective hood with extraction and filtration (optional)
Compatible OSAny with a web browser since the app runs in a web page hosted by the instrument
Image acquisition
Spatial resolution0.4 – 2.5µm per pixel, with adjustable zoom
Flash duration20 – 10000ns
Camera framerateMax 50 FPS in full resolution
Sensors
Temperature
Humidity
Misting
Dropcatcher
With air aspiration and waste collection
GUI
Live preview with manual controls
Waveform editor
Inksystem editor
Test session editor
Results visualization with dedicated algorithms
Test parameters
Flash delay, flash duration, frequency, grey level, idle time, nozzle IDs, Z-offset, drops per image, jetting load, waveform IDs, inksystem config IDs, number of repetitions
Extractable values
Drop speed, drop volume, jetting angle, jetting status, drop classification, number of drop elements, drop XY position, number of mist per frame, stability of any of the previous
2D or 3D contour interactive plots with preview of the dropwatching image at any point
Stitching images over any of the test parameters with any values as label
All raw values in Excel / CSV and all raw images
Applications
Waveform optimizations over any parameter
Performances comparison with previous tests in the database
High-Frequency optimizations up to 200kHz
Long-distance jetting optimizations up to 35mm
Open nozzle time optimizations such as tickling
Misting optimizations for reduced maintenance
Automated nozzle check across the whole printhead
Inksystem parameter and temperatures optimizations
Database
All waveforms, inksystems and test session parameters
All raw dropwatching images
All drop features
All sensor values (incl. printhead and inksystem)
Supported hardware
Printhead brandsRicoh, Fujifilm Dimatix, Konica Minolta, Seiko, Epson, others upon request.
Driving electronics brandsMeteor, GIS, Aewa, Polytype, others upon request
Ink Delivery SystemsDroptimize Dropressure for endshooter printheads, any other can be used, and integrated in the software upon request