1. Product introduction:
The vacuum coating fingerprint display system is our latest high-end product for fingerprint display, which can increase the display rate of fingerprints by 15-70%.

2. Application occasions:
v Applicable objects are mainly the appearance of potential fingerprints on the surface of non-permeable samples and some semi-permeable samples.
v For plastic products, metal products, electroplated surfaces, glass, wood products, leather, plastic paper, enamelware, ceramics, light-colored textiles, rubber, etc., the sweaty handprints on the surface of the inspection materials have a good display effect; secondly , It also has a certain effect on the fingerprints on the surface of the test materials such as weathered painted wood, natural wood, paper products and so on. At the same time, it is also suitable for reappearance of fingerprints on the inspection materials with poor effect of 502 fingerprints.
 
3. Product features
1. Choose 7-inch color LCD touch screen, Chinese computer operating system (V2.0), with humanized design concept, simple and fast operation;
2. Adopt automatic/manual dual operation operation mode:
3. Automatic: It can automatically control the vacuuming of the preset parameters, the first "gold" (or copper or aluminum) plating, the second "zinc" plating, the third "silver" plating, and the final vacuum and pressure relief operation;
4. Manual: According to the needs of the experiment, the user can control and complete each operation step of the vacuum coating separately;
5. Adopting a high-difficulty stainless steel cavity square structure design, and equipped with a multi-layer height carrier board fixed station, to realize the surface fingerprint coating of different thicknesses of test materials;
6. Pull-out "curved surface" and "flat" loading plates can be flexibly selected and used in conjunction according to the shape and size of the material to be inspected;
7. Choose a practical low-voltage and high-current resistive evaporation source, which is easy to operate and maintain; there are 3 sets of evaporation boats, and the coating of 3 kinds of coating materials can be completed according to needs;
8. Equipped with high-performance active thermocouple vacuum gauge (measuring rough vacuum) and active cold ionization vacuum gauge (measuring high vacuum) to accurately measure the vacuum in the cabinet to ensure the accuracy and reliability of the vacuum in the chamber and the best display conditions ；
9. Adopt a two-stage vacuum pump high-performance molecular pump combination structure to achieve high vacuum requirements in the cavity;
10. There are real-time vacuum degree parameter display and intuitive evaporation current parameter display, which is convenient for real-time observation;
11. Use large-size quartz glass observation window, built-in LED lighting system, easy to clean and observe;
10. There is a fault alarm buzzer and a text display on the fault interface;
12. There is a USB socket for running program software upgrades and automatic running/fault data output;
13. There is a manual emergency relief valve for power failure to ensure the safety of inspection materials;
14. The whole machine has a cabinet-style overall design, no external cooling system, and a roller/support frame combination caster at the bottom, which is convenient for moving and fixing the equipment;
15. The fingerprints after the vacuum coating is revealed will not affect the extraction of DNA;
16. It is suitable for reappearance of samples with poor effect of 502 handprint smoking.
 
Four, technical parameters
1. Operating system: 7-inch color LCD touch screen, Chinese computer operating system (V2.0), concise and fast;
2. Coating mode: automatic/manual
3. Automatic: It can automatically control the vacuuming of the preset parameters, the first "gold" (or copper or aluminum) plating, the second "zinc" or the third "silver" plating, and the final vacuum and pressure relief operation; Preset, can be modified)
4. Manual: The user can perform the vacuum coating fingerprint display by himself according to the needs of the experiment;
5. Cavity design: stainless steel material, square structure;
6. Dimensions: height 500mm x width 400mm x depth 400mm (80 liters)
7. Carrier board station: There are multi-layer carrier board fixed stations on both sides of the cavity to meet the requirements of loading and fixing samples of different thicknesses;
8. Applicable material thickness: ≤ 250mm
9. Carrying board: pull-out "curved" and "flat" material evidence carrier board, which can be selected according to the size of the material to be inspected;
10. Maximum coating area: 460 x 360 mm
11. Resistive evaporation source: 3 groups (low voltage and high current), can evaporate "gold, copper, aluminum, zinc, silver" coating materials;
12. Vacuum measurement: Built-in active thermocouple vacuum gauge and active cold ionization vacuum gauge, real-time accurate measurement and visual display of the change of vacuum;
13. Vacuum degree: equipped with a two-stage vacuum pump and a high-performance molecular pump to achieve high vacuum requirements in the cavity;
14. Vacuum degree in the cabinet ＞ 10-3Pa (10-5mbar) (high vacuum range)
15. Vacuum time ＜ 8 minutes
16. Full time of automatic coating: <20 minutes
17. Real-time vacuum parameter display and intuitive evaporation current parameter display;
18. Illumination: 2 LED illuminators on both sides of the bottom of the cavity, 4x1W;
19. Quartz glass observation window: 250 x 300 mm;
20. Fault display: alarm buzzer and text display on the fault interface;
twenty one. Data output: USB socket, program software upgrade and running data output;
twenty two. Power-off emergency: Power-off manual emergency relief valve to ensure the safety of inspection materials;
twenty three. The whole machine has a cabinet-style overall design, no external cooling system, and a roller/support frame combination caster at the bottom, which is convenient for moving and fixing the equipment; overall dimensions: width 1000 x thickness 840 x height 1650 mm
twenty four. Working power supply: 220 V, 12 A.