BTDM-I Vacuum coating fingerprint developing instrument
Purpose
A general method for developing sweat fingerprint, greasy fingerprint, sweat-grease fingerprint, blood fingerprint and blood-sweat fingerprint on porous or non-porous surface.
Working principle
BTDM-I VMD fingerprint development system is especially designed for fingerprint development by vacuum metal deposition (VMD). Gold, silver, copper, zinc, aluminum and tin are placed in the evaporation boat in the vacuum chamber. The exhibit is fixed above the evaporation boat. After the power is on, the metal in the boat evoporates and doposits on the surface of the exhibit, and the fingerprint will occur due to different thickness of metal deposit at the ridge line part and the blank part.
Features
The VMD method is a general method for fingerprint development. It can be used to develop fingerprints of various components, including sweat fingerprint, greasy fingerprint, sweat-grease fingerprint, blood fingerprint, blood-sweat fingerprint, juice-contaminated fingerprint and water-staining fingerprint. Suitable for various surfaces: porous surface, non-porous surface, smooth surface, rough surface.
Method of use (e.g. Gold/zinc to develop fingerprint on white paper)
A. Turn on the system, the touch screen lights up and displays four buttons.
B. Click the "AIR-IN" button to open the vacuum chamber door.
C. Add gold wire on evaporation boat 1 and zinc particles on boat 2. Fix the exhibit on top of the evaporation boats. Close the chamber door.
D. Click the START button and the device starts to vacuum. 15 minutes later, the vacuum will reach required 2x10-4mbar. Two options, “Evaporation 1” and “Evaporation 2”, appears on the touch screen.
E. Click “Evaporation 1” to start heating the gold, control the evaporation speed of gold by twiddling the power adjustment knob below the touch screen until all the gold in the boat is evaporated.
F. Click “Evaporation 2” to start heating the zinc, control the evaporation speed of zinc by twiddling the power adjustment knob below the touch screen. Closely observe the fingerprint development through the glass window and immediately reduce the power to zero when the fingerprint appears on the exhibit.
G. Click the “AIR-IN” button to end the evaporation, open the door and take out the exhibit.
H. To put in a new exhibit for fingerprint development, it only takes 5 minutes to finish vacuuming.
Specifications
| LCD touch screen size | 10 inches |
| Language | Chinese |
| Inside size of the vacuum chamber | Φ500×610mm |
| Exhibit holder size | 807x560mm |
| Qty. of evaporation boats | 4 |
| Material of evaporation boat | molybdenum |
| Observation window size | 400mm |
| Built-in lighting | 2 LED lights |
| One button is used to control the whole process of vacuum pumping, with two mechanical pumps performing the initial rough pumping and one molecular pump performing the main high-vacuum pumping. In idle condition, the chamber can reach the vacuum required for metal evaporation in 17 minutes. |
| During the shutdown process, the molecular pump needs to decelerate slowly, and the total shutdown process is 12 minutes. |
| After one batch of exhibit is processed, keep the mechanical pump and molecular pump running, and close the high valve between the vacuum chamber and the molecular pump. Fill the air to open the vacuum chamber door, change the exhibit and evaporation metal, close the chamber door, and vacuum the chamber again. The chamber can reach the vacuum required for metal evaporation in 5 minutes. Multiple batches of exhibits can be processed with one time of turn-on. |
| Vacuum for gold evaporation | 2x10-4mbar |
| Vacuum for zinc evaporation | 2x10-4mbar |
| The vacuum chamber can reach an ultimate vacuum of 8×10-7mbar, which can not only improve the development result but also assist other scientific researches. |
| Power supply | AC220V, 50HZ, 15kw |
| Evaporation electrode voltage | 10V |
| Max. evaporation electrode current | 500A |
| Control mode of evaporation current | current controller |
| Max. evaporation power of single evaporation boat | 1250W (working time of evaporation boat is less than 30 seconds) |
| Max. evaporation power of four evaporation boat | 5000W (working time of evaporation boats is less than 30 seconds) |
| Total system power | 6000W (four evaporation boats working at full power) |
| Total system power | 1000W (evaporation boat idle) |
| Rotation angle of exhibit holder | 45°, 90° |
| System size | 1300mm × 730mm × 1900mm (length x width x height) |
| System weight | 300kg |
Development effect
After a large number of comparative tests, the development effect of VMD method is obviously superior to the conventional method for a variety of fingerprints.
Sweat fingerprint on white paper: Gold-plated+Zinc
Sweat fingerprint on Aluminum foil: Gold-plated
Sweat fingerprint on Thermosensitive paper: Silver-plated + Gold
Sweat fingerprint on Kraft paper: Silver-plated
Sweat fingerprint on plastic film: Silver-plated
Sweat fingerprint on coated paper card: Silver-plated + Zinc
Product Application
Application areas for our products include crime scene investigation, fingerprint collection and development, footprint collection and development, tool marks collection, trace evidence collection, documents examination, forensic medical examination, forensic evidence collection, DNA collection, DNA disinfection, criminal photography, criminal investigation light source, narcotic drugs test, poison test, evidence packaging, evidence marking, crime scene plotting, crime scene protection, human body protection on crime scene.
Our Service
We can provide reliable product and service for you.
1. Q: Is it a reliable company?
A: Beijing Bulant Police Equipment Co.,Ltd. is a company specialized in forensic product, such as: crime scene investigation, trace detection, fingerprint development and extraction, footprint extraction, micro-evidence extraction, files & documents inspection, gunshots detection, forensic examine, DNA extraction, criminal photograph, forensic light source, alcohol test, traffic scene investigation, drug & poison examine, evidence packaging, consumables in lab, etc.
2. Q: What about the delivery?
A: We can offer the door to door services by air or by sea just depend on your actual request. Such as DHL, UPS, TNT, FEDEX…
3. Q: What is the package?
A: Aluminum alloy case/carton case/wooden case.
4. Q: Do you have any timely technology supports?
A: We have a professional technology supporting team for your timely services. We prepare the technical documents for you, also you can contact us by telephone, webcam, online chat (google talk, MSN, skype, yahoo).
5. Q: What is the payment method?
A: T/T, WESTERN UNION, MONEY GRAM, ESCROW, PAYPAL
6. Q: Do you take part in the world exhibition every year?
A: Yes, we took part in exhibitions every year since 2008.
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C205 BTDM-Ⅰ Vacuum coating fingerprint developing instrument Images
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