CN105832344A - Automatic powder supply mark inspection device used for extracting fingerprint in crime scene by powder method, and powder supply method thereof - Google Patents
Automatic powder supply mark inspection device used for extracting fingerprint in crime scene by powder method, and powder supply method thereof Download PDFInfo
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- CN105832344A CN105832344A CN201510020424.9A CN201510020424A CN105832344A CN 105832344 A CN105832344 A CN 105832344A CN 201510020424 A CN201510020424 A CN 201510020424A CN 105832344 A CN105832344 A CN 105832344A
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Abstract
The invention relates to a mark detection tool in the field of police criminal detection, and specifically relates to an automatic powder supply mark inspection device used for extracting fingerprints in a crime scene by a powder method, and a powder supply method thereof. A front cover, a rear cover, and a base are respectively installed on a support. An air pump and a powder bottle are respectively held in the internal space formed by the rear cover and the support, and the internal space formed by the base and the support, and the air pump and the powder bottle are respectively installed on the support. A spray cylinder is held in the front cover, one end is hinged with the support, and the other end is provided with a fluff brush. A fluidized bed is under powders which are held in the powder bottle. The lower end of the powder bottle is communicated with the air pump, and the upper end is communicated with the spray cylinder through an airflow guide pipe. Pressurized gas provided by the air pump performs boiling treatment on the powders through the fluidized bed. Mixed gas with the powders is sprayed to a mark inspection working face through the spray cylinder, and flowing powders contact a mark and are absorbed on the surface of the mark to form a clear image. The fluff brush plays a role of preventing the powders from losing, and has effect of secondary development. The image which is brushed by the brush is clearer and more stable.
Description
Technical field
The present invention relates to the trace detection instrument in police criminal detection field, specifically a kind of use
Automatically equipment is examined and for powder method for powder trace in what scene of a crime powder method took the fingerprint.
Background technology
Being presently used for the most popular method of scene of a crime fingerprint imaging and analysis, to be called powder profiling
Method.This often can see in movie or television, and investigator brushes fine powder on fingerprint,
Stick adhesive tape again and obtain shape and the vestige (the most namely vestige of fingerprint) of powder；
So, finger print information just can be preserved to adhesive tape by investigator, thus conveniently take back laboratory and enter
Row is analysed in depth.If fingerprint stays the unwetted article such as metal, plastic cement, glass, ceramic tile
Surface, available powder method takes the fingerprint, and dips in a little powder with banister brush, plays brush holder gently,
Powder is made to be scattered in equably on fingerprint；Then shake off or flick excessive powder with brush point,
Colourless fingerprint just becomes coloured.Conventional powder has aluminium powder, iron powder, copper powder, graphite powder etc..
It is a kind of method easy, effective that powder method takes the fingerprint, but, due to the powder used
Being mostly superfines, after substantial amounts of brushing, powder suspends the most in a large number, to specially
The physical impairment of industry technical staff is very big；And, directly brush fingerprint surface with brush, easily
By fingerprint damage.
Summary of the invention
In order to solve harmful dust fill the air pollute environment in atmosphere, injury is handled a case policeman's health
Problem, it is an object of the invention to provide a kind of for scene of a crime powder method take the fingerprint from
Dynamic for powder trace inspection equipment and for powder method.
It is an object of the invention to be achieved through the following technical solutions:
The present invention automatically for powder trace inspection equipment include base, protecgulum, bonnet, support, spray canister,
Air pump, the powder bottle of built-in fluid bed and power panel, wherein protecgulum, bonnet and base are respectively mounted
On the bracket, described air pump and powder bottle are respectively contained in bonnet and support, base and support
The inner space formed, and be respectively mounted on the bracket；Described spray canister is in non-duty
Being placed in protecgulum, one end is hinged with described support, and the other end is provided with fine hair brush；Described stream
Changing berth lower section of filled powder in powder bottle, the lower end of this powder bottle is connected with described air pump,
Upper end is connected with described spray canister by airflow duct；Described bonnet is provided with operation button, should
Operation button and air pump electrically connect with the power panel being arranged in base respectively, and described power panel divides
The power module and the switch that do not arrange with base electrically connect, and supply for described operation button and air pump
Electricity.
Wherein: described powder bottle be arranged over gland, this gland can be arranged on institute up or down
State on support, described gland is respectively equipped with connecting tube and projection, one end of described airflow duct
Being connected with the upper end of powder bottle by this connecting tube, the other end is connected with described spray canister；Described
Being arranged with stage clip on projection, the two ends of this stage clip are connected to gland and support respectively；Described spray canister
Being tightly connected with described airflow duct for telescopic tube-in-tube structure, i.e. inner core, urceolus is interior with this
Between Tong can relative telescopic, described fine hair brush is arranged on urceolus spout end；Top in described bonnet
Portion is provided with illuminating lamp, and this illuminating lamp electrically connects with described power panel；Described power module is for filling
Electroplax, this charging panel is arranged in described base, with the charging socket electricity of setting on described base
Connect, and electrically connect with described power panel；
The present invention for what powder trace examined equipment for powder method is automatically:
Described power module is that air pump is powered by power panel, makes this air pump be provided with pressure air,
The described powder having pressure air to form air-flow through described fluid bed, act in described powder bottle, makes
Obtain this powder to mix with air, form the mixed gas with powder, should be with the mixing of powder
Gas is sent in spray canister by described airflow duct；By described spray canister spray with powder
In mixed gas, a part of powder directly clashes into trace inspection work surface and is adsorbed in this trace inspection work
Face, another part powder is threaded onto at the spray chamber mouth of described spray canister next time in the effect of air-flow, and with
At described spray chamber mouth, the powder of ejection converges shock trace inspection work surface again, repeatedly clashes into；At band
During having the mixed gas ejection of powder, described fine hair brush is adsorbed with powder；Described spray canister
The interior unnecessary mixed gas with powder is controlled at described spray chamber mouth by fine hair brush；
After injection, utilize the inswept described trace of described fine hair brush to examine work surface, make powder be attached to this
On trace inspection work surface；During described fine hair brush inswept trace inspection work surface, this fine hair brushing
Powder on hair plays the effect of redevelopment, on the inspection work surface of trace described in course of injection
The part not having development is supplemented, and makes trace inspection work surface complete.
Advantages of the present invention with good effect is:
1. the body of calming the anger automatically provided by air pump for powder trace inspection equipment of the present invention is through fluidizing
Bed forms air-flow, makes powder and mixes with body of calming the anger " boiling ", and powder is delivered to trace inspection automatically
Work surface carries out trace inspection sampling, prevents harmful powder to scatter and disappear and spread in sky under the protection of fine hair brush
In gas, the health of injury policeman；Fine hair brush may also function as secondary while blocking filtration powder and shows
Shadow, fixing effect, make the vestige of collection become apparent from, and improves sampling work efficiency, joint
About powder.
2. the air pump that the present invention examines equipment for powder trace automatically is provided above gland, can be to powder bottle
Spacing, and facilitate powder bottle to pick and place.
3. the method for the present invention is easy to operate, high for powder efficiency, and powder clashes into trace inspection work repeatedly
Making face, loss less, the trace inspection work surface inswept through fine hair brush becomes apparent from, stablizes.
Accompanying drawing explanation
Fig. 1 is the structural representation of trace of the present invention inspection equipment folded state；
Fig. 2 is the use state diagram after trace of the present invention inspection equipment takes away protecgulum；
Fig. 3 is the internal structure schematic diagram of trace of the present invention inspection equipment；
Fig. 4 is the explosive view of trace of the present invention inspection equipment；
Fig. 5 is the fundamental diagram of trace of the present invention inspection equipment；
Fig. 6 is A A sectional view in Fig. 4；
Fig. 7 is B B sectional view in Fig. 4；
Fig. 8 is the structural representation bottom trace of the present invention inspection plant bottom case；
Wherein: 1 is base, 2 is protecgulum, and 3 is bonnet, and 4 is support, and 5 is spray canister, 6
For fine hair brush, 7 is air pump, and 8 is powder bottle, and 9 is fluid bed, and 10 is airflow duct, and 11 are
Gland, 12 is stage clip, and 13 is illuminating lamp, and 14 is operation button, and 15 is connecting tube, 16
For projection, 17 is power panel, and 18 is charging panel, and 19 is switch, and 20 is charging socket.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Fig. 1～8, the present invention automatically for powder trace inspection equipment include base 1, protecgulum 2,
Bonnet 3, support 4, spray canister 5, fine hair brush 6, air pump 7, the powder bottle 8 of built-in fluid bed 9,
Gland 11, power panel 17 and power module, the lower end of its medium-height trestle 4 is arranged on base 1,
Protecgulum 2 and bonnet 3 lay respectively at the both sides of support 4, and bonnet 3 is arranged on support 4, front
Lid 2 is removably mounted on support 4；The horizontal cross-section of protecgulum 2 and bonnet 3 is " U "
Shape, inside all leaves accommodation space, and the most right at " u "-shaped opening both sides inwall
Claim to be provided with multiple projection, in order to make self to fix with support 4.
Powder bottle 8 is placed in the inner space that bonnet 3 is formed with support 4, and air pump 7 is vacant the end of in
The inner space that seat 1 is formed with support 4, and be separately fixed on support 4；Air pump 7 is positioned at
The lower section of powder bottle 8, and be connected with the lower end of powder bottle 8.Fluid bed 9 is positioned at powder bottle 8 institute
The lower section of dress powder.Powder bottle 8 be arranged over gland 11, this gland 11 can be up or down
It is arranged on the upper end of support 4；Connecting tube 15 and projection 16 it is respectively equipped with on gland 11, convex
Being arranged with stage clip 12 on block 16, the two ends of this stage clip 12 are connected to gland 11 and support respectively
4, by the effect of stage clip 12, can be spacing to powder bottle 8 by gland 11, and changing
During powder bottle 8, only need upwardly gland 11, i.e. can be taken off powder bottle 8, replace with new powder bottle
After 8, gland 11 resets under the effect of stage clip 12.Spray canister 5 is placed in non-duty
In protecgulum 2, one end is hinged with support 4, and the other end is provided with fine hair brush 6.Powder bottle 8 upper
End is connected with one end of connecting tube 15, and the other end of connecting tube 15 passes through airflow duct 10
It is connected with spray canister 5.
Be provided with power panel 17 in the base 1 of air pump 7 side, this power panel 17 be positioned at air pump
The power module electrical connection of 7 opposite sides.Power module can use the side of aneroid battery or rechargeable battery
Formula, the power module of the present embodiment is the charging panel 18 being arranged in base 1.Base 1
Switch 19 and charging socket 20, charging panel 18 and charging socket 20 electricity it is respectively equipped with on bottom surface
Connecting, and electrically connect with power panel 17, power panel 17 electrically connects with switch 19.Bonnet 3
Being provided with operation button 14, this operation button 14 electrically connects with power panel 17.At bonnet 3
Interior top is provided with illuminating lamp 13, and this illuminating lamp 13 electrically connects with power panel 17.
Spray canister 5 is that telescopic tube-in-tube structure, i.e. inner core are tightly connected with airflow duct 10,
Between urceolus and this inner core can relative telescopic, fine hair brush 6 is arranged on urceolus spout end.
The confession of the equipment of automatically examining for powder trace that the present invention takes the fingerprint for scene of a crime powder method
Powder method is:
Utilizing charging socket 20 to charge charging panel 18, this charging panel 18 supplies for power panel 17
Electricity.Activate switch 19, presses the operation button 14, and power panel 17 is powered for air pump 7, starts
Air pump (band speed-regulating function) 7, makes this air pump 7 be provided with pressure air, carries after being compressed by air
It is provided with body of calming the anger for powder bottle 8.The body of calming the anger that air pump 7 provides forms gas through fluid bed 9
Stream, acts on bottom powder, makes powder float and mix with air, in " boiling " state,
Form the mixed gas with powder.Mixed gas with powder passes through airflow duct 10 quilt
Deliver in spray canister 5, spray canister 5 spray；The mixed gas with powder of ejection, air is arranged
In air, a part of powder directly clashes into trace inspection work surface and is adsorbed in trace inspection work surface,
Another part powder is threaded onto at the spray chamber mouth of spray canister 5 next time in the effect of air-flow, and with spray chamber mouth
The powder of place's ejection converges shock trace inspection work surface again, the most repeatedly clashes into；Meanwhile also
Some powder with air through development, fixing, filter fine hair brush 6 time, by fine hair
Brush 6 adsorbs, and air is then arranged in air after fine hair brush 6 filters.
Fine hair brush 6 blocks, filter powder while, effect of redevelopment can be played.Work as powder
Agent injection strikes trace inspection work surface, and the trace inspection powder being attached on trace inspection work surface, due to
Powder is micro floc matter, and in irregular status, the reflection to light is scattering state, sees
Examine inconspicuous, utilize the light work that sweeps of fine hair brush 6 that powder can be made to be attached to trace inspection regularly
Work surface, improves light reflection efficiency, reduces scattered light, makes the vestige of collection become apparent from.
It is attached to the powder on fine hair brush 6 fine hair during gently sweeping, the work of redevelopment can be played
With, for course of injection not having the part of development supplement so that trace inspection achievement is more
Add perfect.The effect that fine hair brush 6 also acts as simultaneously, controls part powder in spray canister 5
Avoid excessive inside spray chamber mouth, make unnecessary powder control at spray chamber mouth, it is to avoid pollute environment,
Infringement policeman's health.
The flow of air pump 7 of the present invention is 60～120cm3/ s, gas outlet maximum working pressure (MWP) is not
More than 0.05Mpa, can be according to the bulk density regulation uninterrupted of trace inspection powder.Trace inspection powder
Bulk density is 0.3～1.0g/cm3, granularity is between 500～800 mesh.The hole of fluid bed
Footpath is 5～10 μm, a diameter of 15mm, thickness 2mm.
Experimental example
After glass presses fingerprint, the criminal investigation special argentum powder conduct using mesh number to be 800 mesh
Work powder.During work, unload protecgulum 2, rotate spray canister 5, again buckle protecgulum 2, hands
Hold and automatically examine equipment for powder trace, make spray canister 5 be directed at trace inspection work surface；Thumb Push switch 19,
By air pump 7 speed regulation to 100cm3/ s, presses the operation button 14 driving air pumps 7, compression
Air forms air-flow through fluid bed 9, acts on development powder so that powder mixes " boiling with air
Rise ", form the mixed gas with powder；Mixed gas enters spray canister 5 through airflow duct 10
In, it is sprayed onto on glass, utilizes the performance of development powder, make the vestige stayed on glass
Clearly display；After fine hair brush 6 is gently swept, vestige becomes apparent from and stablizes, the most sharp
Mixing air in powder adsorb on fine hair under the filtration of fine hair brush 6, air is then
By, in fine hair filtration heel row to surrounding air, the clear of previous press can be seen on glass surface
Clear fingerprint.During, illuminating lamp 13 also can illuminate trace inspection work surface.After using, before opening
Lid 2, folds reset by spray canister 5, covers protecgulum 2.
Claims (7)
1. automatically examine an equipment for powder trace for what scene of a crime powder method took the fingerprint, its
Be characterised by: include base (1), protecgulum (2), bonnet (3), support (4), spray canister (5),
Air pump (7), the powder bottle (8) of built-in fluid bed (9) and power panel (17), wherein protecgulum
(2), bonnet (3) and base (1) be separately mounted on described support (4), described gas
Pump (7) and powder bottle (8) be respectively contained in bonnet (3) and support (4), base (1) with
The inner space that support (4) is formed, and be separately mounted on described support (4)；Described spray
Cylinder (5) is in non-duty is placed in protecgulum (2), and one end is cut with scissors with described support (4)
Connecing, the other end is provided with fine hair brush (6)；Described fluid bed (9) is positioned at powder bottle (8) institute
The lower section of dress powder, the lower end of this powder bottle (8) is connected with described air pump (7), and upper end leads to
Cross airflow duct (10) to be connected with described spray canister (5)；Described bonnet (3) is provided with behaviour
Make button (14), this operation button (14) and air pump (7) respectively be arranged on base (1)
Interior power panel (17) electrical connection, described power panel (17) is arranged with base (1) respectively
Power module and switch (19) electrical connection, for described operation button (14) and air pump (7)
Power supply.
2. as described in claim 1, automatically supply powder for what scene of a crime powder method took the fingerprint
Trace inspection equipment, it is characterised in that: described powder bottle (8) be arranged over gland (11), this pressure
Lid (11) can be arranged on described support (4), on described gland (11) up or down
Being respectively equipped with connecting tube (15) and projection (16), one end of described airflow duct (10) leads to
Cross this connecting tube (15) to be connected with the upper end of powder bottle (8), the other end and described spray canister (5)
It is connected；Stage clip (12), the two ends of this stage clip (12) it are arranged with on described projection (16)
It is connected to gland (11) and support (4) respectively.
3. as described in claim 1 or 2 for scene of a crime powder method take the fingerprint automatic
Equipment is examined for powder trace, it is characterised in that: described spray canister (5) is telescopic tube-in-tube structure,
I.e. inner core is tightly connected with described airflow duct (10), can relative stretch between urceolus with this inner core
Contracting, described fine hair brush (6) is arranged on urceolus spout end.
4. as described in claim 1 or 2 for scene of a crime powder method take the fingerprint automatic
Equipment is examined for powder trace, it is characterised in that: the top in described bonnet (3) is provided with illuminating lamp
(13), this illuminating lamp (13) electrically connects with described power panel (17).
5. as described in claim 1 or 2 for scene of a crime powder method take the fingerprint automatic
Equipment is examined for powder trace, it is characterised in that: described power module is charging panel (18), this charging
Plate (18) is arranged in described base (1), and the charging that arrange upper with described base (1) is inserted
Mouth (20) electrical connection, and electrically connect with described power panel (17).
6. one kind is used for what scene of a crime powder method took the fingerprint as described in claim 1 or 2
Automatically supply powder trace inspection equipment supplies powder method, it is characterised in that: described power module passes through power supply
Plate (17) be air pump (7) power supply, make this air pump (7) be provided with pressure air, described in have pressure
The powder that air forms air-flow through described fluid bed (9), acts in described powder bottle (8),
This powder is mixed with air, forms the mixed gas with powder, should mixing with powder
Close gas to be sent in spray canister (5) by described airflow duct (10)；By described spray canister (5)
Ejection the mixed gas with powder in, a part of powder directly clash into trace inspection work surface and
Being adsorbed in this trace inspection work surface, another part powder is threaded onto described spray canister next time in the effect of air-flow
(5) at spray chamber mouth, and with described spray chamber mouth at ejection powder converge again clash into trace inspection
Work surface, clashes into repeatedly；During the mixed gas with powder sprays, described fine hair
Brush (6) is adsorbed with powder；The mixed gas with powder unnecessary in described spray canister (5) is led to
Cross fine hair brush (6) to control at described spray chamber mouth.
7. the confession powder method as described in claim 6, it is characterised in that: after injection, utilize
Described fine hair brush (6) inswept described trace inspection work surface, makes powder be attached to this trace inspection work surface
On；During described fine hair brush (6) inswept trace inspection work surface, this fine hair brush (6) floss
Powder on hair plays the effect of redevelopment, on the inspection work surface of trace described in course of injection
The part not having development is supplemented, and makes trace inspection work surface complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020424.9A CN105832344B (en) | 2015-01-15 | 2015-01-15 | The automatic powder supply trace inspection equipment and its powder supply method to take the fingerprint for scene of a crime powder method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020424.9A CN105832344B (en) | 2015-01-15 | 2015-01-15 | The automatic powder supply trace inspection equipment and its powder supply method to take the fingerprint for scene of a crime powder method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105832344A true CN105832344A (en) | 2016-08-10 |
| CN105832344B CN105832344B (en) | 2018-08-21 |
Family
ID=56580056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510020424.9A Active CN105832344B (en) | 2015-01-15 | 2015-01-15 | The automatic powder supply trace inspection equipment and its powder supply method to take the fingerprint for scene of a crime powder method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105832344B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954923A (en) * | 2018-09-30 | 2018-12-07 | 上海交通大学 | A kind of air-conditioning heat exchanger accelerates the accurate powder feeder unit of dust accumulation test |
| CN109419513A (en) * | 2017-08-28 | 2019-03-05 | 大连圣迈新材料有限公司 | The automatic powder supply trace inspection equipment and its powder supply method to take the fingerprint for scene of a crime powder method |
| CN111228103A (en) * | 2020-01-14 | 2020-06-05 | 上海理工大学 | Hand skin care instrument based on fluidized bed principle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4248543A (en) * | 1979-02-14 | 1981-02-03 | Sirchie Finger Print Laboratories, Inc. | Finger print powder dispensing apparatus |
| CN200941894Y (en) * | 2006-08-22 | 2007-09-05 | 李保供 | Electric fingerprint brush |
| US20110315161A1 (en) * | 2010-06-25 | 2011-12-29 | Hct Asia Ltd | Compact system with magnetic slide out brush |
| CN203861232U (en) * | 2014-03-27 | 2014-10-08 | 李承承 | Special magnetic powder brush for extraction of fingerprints |
| CN104107050A (en) * | 2014-07-31 | 2014-10-22 | 张琦 | Fingerprint powder automatic rotating brush displaying device |
| CN204468090U (en) * | 2015-01-15 | 2015-07-15 | 大连圣迈新材料有限公司 | The automatic powder trace that supplies taken the fingerprint for scene of a crime powder method examines equipment |
-
2015
- 2015-01-15 CN CN201510020424.9A patent/CN105832344B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4248543A (en) * | 1979-02-14 | 1981-02-03 | Sirchie Finger Print Laboratories, Inc. | Finger print powder dispensing apparatus |
| CN200941894Y (en) * | 2006-08-22 | 2007-09-05 | 李保供 | Electric fingerprint brush |
| US20110315161A1 (en) * | 2010-06-25 | 2011-12-29 | Hct Asia Ltd | Compact system with magnetic slide out brush |
| CN203861232U (en) * | 2014-03-27 | 2014-10-08 | 李承承 | Special magnetic powder brush for extraction of fingerprints |
| CN104107050A (en) * | 2014-07-31 | 2014-10-22 | 张琦 | Fingerprint powder automatic rotating brush displaying device |
| CN204468090U (en) * | 2015-01-15 | 2015-07-15 | 大连圣迈新材料有限公司 | The automatic powder trace that supplies taken the fingerprint for scene of a crime powder method examines equipment |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109419513A (en) * | 2017-08-28 | 2019-03-05 | 大连圣迈新材料有限公司 | The automatic powder supply trace inspection equipment and its powder supply method to take the fingerprint for scene of a crime powder method |
| WO2019041784A1 (en) * | 2017-08-28 | 2019-03-07 | 大连圣迈新材料有限公司 | Automatic powder supply and trace detection device for extracting fingerprints by means of crime scene powder method and powder supply method thereof |
| CN109419513B (en) * | 2017-08-28 | 2020-12-08 | 大连圣迈新材料有限公司 | Automatic powder supply trace detection equipment for extracting fingerprints by powder method on crime scene and powder supply method thereof |
| CN108954923A (en) * | 2018-09-30 | 2018-12-07 | 上海交通大学 | A kind of air-conditioning heat exchanger accelerates the accurate powder feeder unit of dust accumulation test |
| CN111228103A (en) * | 2020-01-14 | 2020-06-05 | 上海理工大学 | Hand skin care instrument based on fluidized bed principle |
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|---|---|
| CN105832344B (en) | 2018-08-21 |
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