CN106175784A - A kind of white magnetic fingerprint manifestation powder and preparation method thereof - Google Patents
A kind of white magnetic fingerprint manifestation powder and preparation method thereof Download PDFInfo
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- A61B5/117—Identification of persons
- A61B5/1171—Identification of persons based on the shapes or appearances of their bodies or parts thereof
- A61B5/1172—Identification of persons based on the shapes or appearances of their bodies or parts thereof using fingerprinting
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Abstract
The present invention relates to a kind of white magnetic fingerprint manifestation powder and preparation method thereof, white magnetic fingerprint manifestation powder is made up of the component of following weight portion: Magnaglo 35～55, fingerprint manifestation powder 15～25, lubrication powder 5～10, dye powders 15～25；After Magnaglo, fingerprint manifestation powder, lubrication powder being mixed in proportion with dye powders, ball milling forms, and milling parameters is: ratio of grinding media to material 3:1 6:1, rotating speed 120 250 revs/min, 20 minutes 30 minutes time.Compared with prior art, the present invention uses iron powder, stearic acid powder, Pulvis Talci, titanium dioxide (TiO2), a kind of novel white magnetic fingerprint manifestation powder of preparation, can the most effectively manifest fingerprint, minutia performance is obvious, and manifested fingerprint is difficult to be destroyed.
Description
Technical field
The present invention relates to a kind of fingerprint manifestation powder, especially relate to a kind of white magnetic fingerprint manifestation powder and preparation thereof
Method, belongs to fingerprint judging technique field.
Background technology
When 6 months big, the fingerprint of people has preliminarily formed, and just will not change at about 6 years old fingerprint again.And
And, owing to the feature of single fingerprint is more, and the kind of fingerprint characteristic is the most more, has identical two the most hardly
Individual fingerprint, therefore, fingerprint usually can play conclusive effect in criminal investigation, judicial decision.
But, under normal conditions, fingerprint was after contacting object, and left fingerprint can not the most clearly be seen
Arrive, though shooting and carry out photo process after be also difficult to distinguish the feature of fingerprint, accordingly, it would be desirable to use specific method
Manifest these fingerprints, such as: powder method, ninhydrin method, chemical deposition, magnetron sputtering method etc..
Simultaneously as fingerprint substrate variations is relatively big, on market, existing fingerprint manifestation powder is usually black fingerprint manifestation
Powder, the fingerprint manifestation powder sort of white is less, and the white fingerprint manifestation powder of highly effective has the market application having
Prospect.
Stearic acid has hydrogen bond due to it, can have stronger adhesion with the fatty acid in fingerprint, aminoacid etc., with
Time with background there is no adhesion, therefore may be used for manifesting latent fingerprint.But stearic acid powder has coarse, thick lacking
Point, destructible fingerprint characteristic, and details performance is bad, its white is the distinctest simultaneously.In order to overcome disadvantages mentioned above, the present invention adopts
Improve stearic surface characteristic with Pulvis Talci, and add titanium dioxide to strengthen the vividness of manifested fingerprint.
Magnaglo fingerprint manifestation method has efficient, portable, the advantage of low cost, the most by extensively in fingerprint extraction
General application.
Chinese patent CN 105326509 A discloses a kind of fingerprint manifestation magnetic powder and preparation method and application, this
Bright fingerprint manifestation magnetic powder is made up of with developing powder magnetic powder, and its Components Chemical formula is Ma(BN)b, M is magnetic powder, selected from Fe
Powder, Co powder, Ni powder, Fe3O4Powder or Fe78Si9B13At least one in non-crystalline flour, BN is developing powder, and subscript a, b are respectively each right
Answer the atomic percentage conc of element, and 50≤a≤88.9,11.1≤b≤50, a+b=100.
This invention fingerprint manifestation magnetic powder not only has that raw material is easy to get, prepares simple, stable in properties, to be prone to preservation etc. excellent concurrently
Point, and user is had no side effect, the most prominent advantage is can to realize being dried or multiple object surface under wet environment
The high accuracy of fingerprint manifests.
Chinese patent CN 105411598 A discloses a kind of TiO2/ C strengthening fingerprint manifestation magnetic powder and preparation method thereof
With application, the fingerprint manifestation magnetic powder of this invention is by magnetic powder, developing powder and pigment composition, and its Components Chemical formula is Ma
(BN)bXc, M is magnetic powder, selected from Fe powder, Co powder, Ni powder, Fe3O4Powder or Fe78Si9B13At least one in non-crystalline flour, BN is
Developing powder, X is pigment, selected from TiO2Or the one in C, subscript a, b, c be respectively the atomic percentage conc of each corresponding element,
And 40≤a≤60,30≤b≤50,5≤c≤15, a+b+c=100.The advantage that this invention fingerprint manifestation magnetic powder is the most prominent
Be can to realize being dried or under wet environment, the high accuracy of multiple object fingerprint surface manifests, and coloring effect be obvious, be difficult to by
Wipe away.
Mainly containing Magnaglo, fingerprint manifestation powder and dye powders in above-mentioned patent, its lubricity is poor, causes making
Poor by effect.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and provide a kind of efficiently, manifest effect
Clearly, white magnetic fingerprint manifestation powder being prone to preservation and preparation method thereof.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of white magnetic fingerprint manifestation powder, is made up of the component of following weight portion:
Magnaglo: 35～55；
Fingerprint manifestation powder: 15～25；
Lubrication powder: 5～10；
Dye powders: 15～25.
Described Magnaglo is selected from Fe powder, Co powder, Ni powder, Fe3O4Powder or Fe78Si9B13At least one in non-crystalline flour,
It is preferably selected from Fe powder.Described Magnaglo mesh numerical control system is between 800-5000 mesh.
Described fingerprint manifestation powder is stearic acid powder, and this powder has nontoxic, cheap is combined with fingerprint
The feature that power is strong, therefore has and good manifests effect, should choose the stearic acid powder that mesh number is tried one's best little, generally select when choosing
Take the stearic acid powder of more than 100 mesh.
Described lubrication powder is Pulvis Talci, and this powder has the characteristic of lubrication, is white powder simultaneously, and mesh numerical control system exists
Between 6000-10000 mesh.
Described dye powders is titania powder, and this powder is in bright gay color, can promote manifested fingerprint well
Colour vividness, selected powder mesh numerical control system is at 3000-5000 mesh.
The preparation method of described white magnetic fingerprint manifestation powder, by Magnaglo, fingerprint manifestation powder, lubrication powder
After being mixed in proportion with dye powders, ball milling forms, and milling parameters is: ratio of grinding media to material 3:1-6:1, preferably 5:1, rotating speed
120-250 rev/min, 20 minutes-30 minutes time.Obtained powder after ball milling is sieved by 100 mesh granularities, obtains
Powder required for, is placed in baking oven and is dried 1-2 hour at 50 DEG C.
The main using method of fingerprint manifestation powder that the present invention is obtained is as follows:
Use Magnetic brush to draw a certain amount of fingerprint manifestation powder, slowly swipe along fingerprint lines on object surface, etc.
After fingerprint manifestation, use glass fibre brush to be wiped away by the most unnecessary powder, finally use camera to shoot obtained fingerprint.
Compared with prior art, the present invention uses iron powder, stearic acid powder, Pulvis Talci, titanium dioxide (TiO2), preparation
A kind of novel white magnetic fingerprint manifestation powder, wherein, lubrication powder uses Pulvis Talci, has good lubrication property, and
And good with Magnaglo, fingerprint manifestation powder and dye powders mixed effect, overall composition is uniform, simultaneously because Pulvis Talci is
White powder, therefore, it also has dye powders concurrently and uses so that it is white that gained manifests powder, can the most effectively manifest
Fingerprint, minutia performance is obvious, and manifested fingerprint is difficult to be destroyed.
Accompanying drawing explanation
Fig. 1 is that embodiment 1 gained white magnetic fingerprint manifestation powder is scribbling on blue paint iron plate fresh fingerprint
Carry out fingerprint manifestation manifests design sketch.
Fig. 2 is that embodiment 1 gained white magnetic fingerprint manifestation powder carries out fingerprint to fresh fingerprint on the glass surface
Manifest manifests design sketch.
Fig. 3 be embodiment 1 gained white magnetic fingerprint manifestation powder on black ESD plastic sheeting to fresh fingerprint
Carry out fingerprint manifestation manifests design sketch.
Fig. 4 is that embodiment 1 gained white magnetic fingerprint manifestation powder carries out fingerprint manifestation to fresh fingerprint on plastics
Manifest design sketch.
Fig. 5 is that fresh fingerprint is referred on silvery white aluminium foil by embodiment 1 gained white magnetic fingerprint manifestation powder
What stricture of vagina manifested manifests design sketch.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
The preparation method of a kind of white magnetic fingerprint manifestation powder, by Magnaglo Fe powder (between 800-5000 mesh), hard
Fat acid powder (more than 100 mesh), Pulvis Talci (between 6000-10000 mesh) and titania powder (between 3000-5000 mesh) are pressed
After the mixing of weight ratio 50:20:10:20, ball milling forms, and milling parameters is: ratio of grinding media to material 5:1, rotating speed 200 revs/min, the time
25 minutes.Obtained powder after ball milling is sieved by 100 mesh granularities, it is thus achieved that required powder, be placed in baking oven
2 hours it are dried at 40 DEG C.
Gained white magnetic fingerprint manifestation powder carries out fingerprint manifestation to fresh fingerprint on blue paint iron plate scribbling
Manifest design sketch as shown in Figure 1.
What gained white magnetic fingerprint manifestation powder carried out fingerprint manifestation on the glass surface to fresh fingerprint manifests effect
Fruit figure is as shown in Figure 2.
Gained white magnetic fingerprint manifestation powder carries out fingerprint manifestation to fresh fingerprint on black ESD plastic sheeting
Manifest design sketch as shown in Figure 3.
What gained white magnetic fingerprint manifestation powder carried out fingerprint manifestation on plastics to fresh fingerprint manifests design sketch
As shown in Figure 4.
Gained white magnetic fingerprint manifestation powder carries out manifesting of fingerprint manifestation to fresh fingerprint on silvery white aluminium foil
Design sketch is as shown in Figure 5.
From Fig. 1-Fig. 5 it can be seen that the present embodiment gained white magnetic fingerprint manifestation powder to manifest effect clear.
Embodiment 2
The preparation method of a kind of white magnetic fingerprint manifestation powder, by Magnaglo Fe powder (between 800-5000 mesh), hard
Fat acid powder (more than 100 mesh), Pulvis Talci (between 6000-10000 mesh) and titania powder (between 3000-5000 mesh) are pressed
After the mixing of weight ratio 35:15:5:15, ball milling forms, and milling parameters is: ratio of grinding media to material 3:1, rotating speed 120 revs/min, the time
30 minutes.Obtained powder after ball milling is sieved by 100 mesh granularities, it is thus achieved that required powder, be placed in baking oven
2 hours it are dried at 50 DEG C.
It is clear that the present embodiment gained white magnetic fingerprint manifestation powder manifests effect, it is easy to preserves.
Embodiment 3
The preparation method of a kind of white magnetic fingerprint manifestation powder, by Magnaglo Fe powder (between 800-5000 mesh), hard
Fat acid powder (more than 100 mesh), Pulvis Talci (between 6000-10000 mesh) and titania powder (between 3000-5000 mesh) are pressed
After the mixing of weight ratio 55:25:10:25, ball milling forms, and milling parameters is: ratio of grinding media to material 6:1, rotating speed 250 revs/min, the time
20 minutes.Obtained powder after ball milling is sieved by 100 mesh granularities, it is thus achieved that required powder, be placed in baking oven
1 hour it is dried at 50 DEG C.
It is clear that the present embodiment gained white magnetic fingerprint manifestation powder manifests effect, it is easy to preserves.
Embodiment 4
The preparation method of a kind of white magnetic fingerprint manifestation powder, by Magnaglo Fe powder (between 800-5000 mesh), hard
Fat acid powder (more than 100 mesh), Pulvis Talci (between 6000-10000 mesh) and titania powder (between 3000-5000 mesh) are pressed
After the mixing of weight ratio 45:20:8:18, ball milling forms, and milling parameters is: ratio of grinding media to material 4:1, rotating speed 150 revs/min, the time
25 minutes.Obtained powder after ball milling is sieved by 100 mesh granularities, it is thus achieved that required powder, be placed in baking oven
1.5 hours it are dried at 50 DEG C.
It is clear that the present embodiment gained white magnetic fingerprint manifestation powder manifests effect, it is easy to preserves.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and use invention.
These embodiments obviously easily can be made various amendment by person skilled in the art, and described herein typically
Principle is applied in other embodiments without through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability
Field technique personnel should be the present invention's according to the announcement of the present invention, the improvement made without departing from scope and amendment
Within protection domain.
Claims (9)
1. a white magnetic fingerprint manifestation powder, it is characterised in that be made up of the component of following weight portion:
Magnaglo: 35～55；
Fingerprint manifestation powder: 15～25；
Lubrication powder: 5～10；
Dye powders: 15～25.
A kind of white magnetic fingerprint manifestation powder the most according to claim 1, it is characterised in that described Magnaglo choosing
From Fe powder, Co powder, Ni powder, Fe3O4Powder or Fe78Si9B13At least one in non-crystalline flour.
A kind of white magnetic fingerprint manifestation powder the most according to claim 2, it is characterised in that described Magnaglo choosing
From Fe powder.
A kind of white magnetic fingerprint manifestation powder the most according to claim 1, it is characterised in that described Magnaglo mesh
Numerical control system is between 800-5000 mesh.
A kind of white magnetic fingerprint manifestation powder the most according to claim 1, it is characterised in that described fingerprint manifestation powder
End is stearic acid powder, and chooses the stearic acid powder of more than 100 mesh.
A kind of white magnetic fingerprint manifestation powder the most according to claim 1, it is characterised in that described lubrication powder is
Pulvis Talci, mesh numerical control system is between 6000-10000 mesh.
A kind of white magnetic fingerprint manifestation powder the most according to claim 1, it is characterised in that described dye powders is
Titania powder, powder mesh numerical control system is at 3000-5000 mesh.
8. a preparation method for the white magnetic fingerprint manifestation powder as according to any one of claim 1-7, its feature exists
In, after Magnaglo, fingerprint manifestation powder, lubrication powder being mixed in proportion with dye powders, ball milling forms,
Milling parameters is: ratio of grinding media to material 3:1-6:1, rotating speed 120-250 rev/min, 20 minutes-30 minutes time.
The preparation method of a kind of white magnetic fingerprint manifestation powder the most according to claim 8, it is characterised in that by ball milling
Obtained powder sieves by 100 mesh granularities later, it is thus achieved that required powder, is placed in baking oven and does at 50 DEG C
Dry 1-2 hour.
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| CN201610534631.0A CN106175784A (en) | 2016-07-08 | 2016-07-08 | A kind of white magnetic fingerprint manifestation powder and preparation method thereof |
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| CN201610534631.0A CN106175784A (en) | 2016-07-08 | 2016-07-08 | A kind of white magnetic fingerprint manifestation powder and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107049331A (en) * | 2017-04-11 | 2017-08-18 | 周婧 | A kind of flexible composite of sandwich structure and its preparation method and application |
| CN108315011A (en) * | 2016-11-15 | 2018-07-24 | 香港科技大学 | Fingerprint imaging composition and its application |
| CN108648891A (en) * | 2018-05-18 | 2018-10-12 | 同济大学 | A kind of preparation method of nucleocapsid developing latent finger printss powder |
| CN109893138A (en) * | 2019-03-04 | 2019-06-18 | 西南政法大学 | It is a kind of visualize non-invasive diagnosis diabetes preparation and its preparation, application method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176205A (en) * | 1976-03-24 | 1979-11-27 | Rockwell International Corporation | Fingerprint powder and method of application |
| US20070187587A1 (en) * | 2005-08-09 | 2007-08-16 | University Of Sunderland | Fingerprint analysis using mass spectrometry |
| WO2010007443A2 (en) * | 2008-07-18 | 2010-01-21 | Roar Particles Uk Ltd | Methods of determining properties of latent fingerprints |
| CN101690663A (en) * | 2009-09-24 | 2010-04-07 | 东北师范大学 | Method for latent fingerprint manifestation by magnetic fluorescent silicon dioxide |
| CN102749314A (en) * | 2012-07-12 | 2012-10-24 | 陕西师范大学 | Visualization of fingerprints on skin with Fe3O4/SiO2@ Gd2O3: eu, bi material |
| CN105326509A (en) * | 2015-10-16 | 2016-02-17 | 同济大学 | Magnetic fingerprint revealing powder and preparation method and application thereof |
| CN105411598A (en) * | 2015-11-30 | 2016-03-23 | 同济大学 | TiO2/C reinforced fingerprint appearing magnetic powder and preparation method and application thereof |
-
2016
- 2016-07-08 CN CN201610534631.0A patent/CN106175784A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176205A (en) * | 1976-03-24 | 1979-11-27 | Rockwell International Corporation | Fingerprint powder and method of application |
| US20070187587A1 (en) * | 2005-08-09 | 2007-08-16 | University Of Sunderland | Fingerprint analysis using mass spectrometry |
| WO2010007443A2 (en) * | 2008-07-18 | 2010-01-21 | Roar Particles Uk Ltd | Methods of determining properties of latent fingerprints |
| CN101690663A (en) * | 2009-09-24 | 2010-04-07 | 东北师范大学 | Method for latent fingerprint manifestation by magnetic fluorescent silicon dioxide |
| CN102749314A (en) * | 2012-07-12 | 2012-10-24 | 陕西师范大学 | Visualization of fingerprints on skin with Fe3O4/SiO2@ Gd2O3: eu, bi material |
| CN105326509A (en) * | 2015-10-16 | 2016-02-17 | 同济大学 | Magnetic fingerprint revealing powder and preparation method and application thereof |
| CN105411598A (en) * | 2015-11-30 | 2016-03-23 | 同济大学 | TiO2/C reinforced fingerprint appearing magnetic powder and preparation method and application thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108315011A (en) * | 2016-11-15 | 2018-07-24 | 香港科技大学 | Fingerprint imaging composition and its application |
| CN108315011B (en) * | 2016-11-15 | 2021-04-09 | 香港科技大学 | Composition for developing fingerprint and application thereof |
| CN107049331A (en) * | 2017-04-11 | 2017-08-18 | 周婧 | A kind of flexible composite of sandwich structure and its preparation method and application |
| CN108648891A (en) * | 2018-05-18 | 2018-10-12 | 同济大学 | A kind of preparation method of nucleocapsid developing latent finger printss powder |
| CN108648891B (en) * | 2018-05-18 | 2019-10-18 | 同济大学 | A kind of preparation method of core-shell structure developing latent finger printss powder |
| CN109893138A (en) * | 2019-03-04 | 2019-06-18 | 西南政法大学 | It is a kind of visualize non-invasive diagnosis diabetes preparation and its preparation, application method |
| CN109893138B (en) * | 2019-03-04 | 2021-11-02 | 西南政法大学 | Preparation for visually diagnosing diabetes mellitus without wound, and preparation and use methods thereof |
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