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Digital Paper Dot Meter Densitometer
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Digital Paper Dot Meter Densitometer
Digital Paper Dot Meter Densitometer
Dot mainly expresses hue and gradation in printing industry. They are foundation of copy and color
reproduction of printed products. Dot, tiniest unit to adsorb ink in offset print, reflects hue, gradation and tone of source products in printed. Changes of dots results in problems of printed products including sharpness, gradation, hue, contrast, tone of printing ink, ink density and black overprint.
The advanced dot measurement technology is used for detecting and controlling plate and quality of dot. It supports all kinds of screening technologies used at present including amplitude screening, frequency modulation screening, specialized screening and hybrid screening technology.
A Digital Paper Dot Meter Densitometer is a precision instrument designed to measure the optical density and dot characteristics of printed materials, particularly in the printing and packaging industries. It plays a crucial role in quality control by ensuring color consistency, accurate dot reproduction, and overall print fidelity.
Purpose and Applications of Digital Paper Dot Meter Densitometer
This device is primarily used to:
– Measure Optical Density: Assess the darkness or lightness of printed areas to ensure consistent ink application.
– Evaluate Dot Gain: Determine the increase in dot size during printing, which affects image sharpness and color accuracy.
– Analyze Dot Area and Enlargement: Quantify the percentage of area covered by dots and any unintended expansion.
– Assess Overprint and Contrast: Examine how different ink layers interact and the contrast between printed elements.
– Monitor Tone Error and Gray Balance: Ensure accurate reproduction of tones and neutral grays.
These measurements are vital for maintaining high-quality standards in offset printing, flexography, gravure, and other printing processes.
⚙️ Key Features
Modern digital densitometers, such as the YD5010 PLUS Spectro-Densitometer, offer advanced functionalities:
– Measurement Geometry: 45°/0° configuration for accurate color and density readings.
– Light Sources: Combined LED and UV light for versatile measurement conditions.
– Spectral Range: 400–700 nm with a 10 nm interval, covering the visible spectrum.
– Detector: 256-element double array CMOS sensor for high-resolution data capture.
– Density Standards: Compliant with ISO Status A, E, I, T for standardized measurements.
– Color Spaces: Supports CIE LAB, XYZ, Yxy, LCh for comprehensive color analysis.
– Observer Angles: Selectable 2° and 10° angles for different viewing conditions.
– Measurement Modes: Single and average measurements (2–99 readings) for flexibility.
– Data Storage: Capacity to store over 10,000 measurement records.
– Display: 3.5-inch TFT color LCD with capacitive touch for intuitive operation.
– Power Supply: Rechargeable Li-ion battery supporting up to 5,000 measurements per charge.
These features enable precise monitoring and control of printing processes, ensuring high-quality output.
Measurement Capabilities of Digital Paper Dot Meter Densitometer
Digital densitometers provide a range of measurement functions:
– Density Value and Difference: Quantify the optical density and compare variations across samples.
– Dot Area and Enlargement: Calculate the percentage of area covered by ink dots and any growth during printing.
– Overprint Analysis: Evaluate how different ink layers interact when overprinted.
– Printing Characteristics: Assess parameters like contrast, tone error, and gray balance.
– Color Difference (ΔE): Measure the deviation between intended and actual colors using formulas like ΔE*ab, ΔE*94, and ΔE*00.These measurements are essential for maintaining color accuracy and consistency in printed materials.
Usage and Operation of Digital Paper Dot Meter Densitometer
Using a digital paper dot meter densitometer typically involves:
- Calibration: Performing white and black calibration using provided standards to ensure measurement accuracy.
- Sample Placement: Positioning the printed sample under the measurement aperture.
- Measurement: Initiating the measurement process via the touch screen or connected software.
- Data Analysis: Reviewing the displayed results and, if necessary, transferring data to a computer for further analysis.Regular calibration and maintenance are recommended to maintain the device’s accuracy and longevity.
Industry Applications of Digital Paper Dot Meter Densitometer
Digital paper dot meter densitometers are widely used in:
– Printing and Packaging: Ensuring consistent color reproduction and print quality.
– Ink Manufacturing: Testing ink properties and performance.
– Paper Production: Assessing paper’s suitability for various printing processes.
– Quality Control Laboratories: Conducting standardized tests to comply with industry regulations.
By providing accurate and reliable measurements, these devices help maintain high standards across the printing and packaging industries.
Benefits of Digital Paper Dot Meter Densitometer:
- Accurate Dot Analysis – Precisely measures dot gain, dot area, and enlargement for high-quality printing.
- Consistent Print Quality – Helps maintain uniform color density and contrast across print runs.
- Time-Saving – Quick digital readings eliminate the need for manual inspection and reduce errors.
- Multi-Parameter Testing – Measures density, color difference (ΔE), tone error, and gray balance in one device.
- Supports Industry Standards – Complies with ISO and other standards for print quality control.
- User-Friendly Interface – Touchscreen and onboard storage make it easy to operate and manage test data.
- Portable and Rechargeable – Battery-powered with thousands of readings per charge—ideal for field and lab use.
- Enhances Process Control – Enables precise adjustments during printing to reduce waste and reprints.
Features of Digital Paper Dot Meter Densitometer:
- High-Resolution CMOS Sensor – Ensures precise optical density and color measurements.
- Measurement Geometry: 45°/0° – Ideal for accurate reflection density readings on printed materials.
- Multiple Light Sources – Includes visible and UV LEDs for versatile testing conditions.
- Touchscreen Display – 3.5-inch color LCD with intuitive controls for easy operation.
- Multi-Function Measurement – Measures dot area, dot gain, density difference, tone error, and gray balance.
- Large Data Storage – Stores over 10,000 measurements for tracking and reporting.
- Rechargeable Battery – Long-lasting lithium battery supports up to 5,000 readings per charge.
- USB and Bluetooth Connectivity – Allows data transfer and remote operation via PC or mobile apps.
- Standard Compliance – Supports ISO Status A, E, I, T and CIE color spaces like LAB, LCh, XYZ.
- Multiple Observer Angles – Select between 2° and 10° for different visual perception simulations.
How to Use Digital Paper Dot Meter Densitometer:
- Power On – Turn on the device using the power button.
- Calibrate – Perform black and white calibration using the provided standard tiles to ensure accuracy.
- Select Measurement Mode – Choose desired mode: density, dot area, dot gain, ΔE, contrast, or gray balance.
- Place Sample – Position the printed paper sample under the measurement aperture.
- Take Measurement – Press the measure button or tap the screen. The device will scan and display results instantly.
- Analyze Results – View data on the touchscreen. You can switch between values like density, dot area, and color difference.
- Save or Export Data – Store results in internal memory or transfer via USB/Bluetooth if needed.
- Power Off and Store – Turn off after use. Keep in a dust-free area to protect sensors.
Performance characteristics:
1.Android OS with HD 720 capacitive touching screen, storage of shooting and measured data and
wireless network transmission.
2.Real time HD shooting of micro image dots for reveal reduction quality of dots in detail.
3.Measurement APP is equipped with advanced image processing technology that ensures precise
measure data, and eight measuring instruments for satisfying measurement of not only daily dot ratio and screening lines, but also measuring of length, angle and area of dots and lines.
4.Electronic precise focusing with step motor to coordinate lens for a sharply clear focusing.
5.Convenient data storage through built-in one-button shoot
Magnification 5-200, Screen 720 P HD LCD touchable screen
Operation system Android 5.0, Digital zoom 2, Image format BMP, Net weight 300g, Set weight 500g
Image size 1280*720, Lighting White light LTD*8pcs, Measuring time 1 s
Repeatability ±0.02 D(density),± 1%(dot area), Interface Micro USB 2.0, HDMI
Storage 16GB, ROM 2GB
Battery capability 3200mAh
Battery type Rechargeable lithium battery
Network WIFI
Dimension 185*70*55 mm
Sensor CMSO 1.3 megapixel
Digital Paper Dot Meter Densitometer
Description
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