CN105411599A - Method for showing latent fingerprints through cellulose membrane and aqueous dye solution - Google Patents
Method for showing latent fingerprints through cellulose membrane and aqueous dye solution Download PDFInfo
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- CN105411599A CN105411599A CN201610022058.5A CN201610022058A CN105411599A CN 105411599 A CN105411599 A CN 105411599A CN 201610022058 A CN201610022058 A CN 201610022058A CN 105411599 A CN105411599 A CN 105411599A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- 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 invention provides a method for showing latent fingerprints through a cellulose membrane and an aqueous dye solution, and belongs to the technical field of fingerprint identification. The method comprises the steps that the fingerprints on the surface of the cellulose membrane are immersed in the aqueous dye solution, the ability of a regression line area, covered with fingerprint residues, immersed by the dye solution is poor, a corresponding valley line area can be easily immersed for dyeing, the colors of the two areas are remarkably different, and therefore the fingerprint outline is rapidly shown with high sensitivity. According to the method, operation is easy and rapid, the raw materials are cheap and easy to obtain, the process is environmentally friendly and efficient, the effect resolution ratio reaches up to the third level, and the method is applicable to undamaged showing of latent fingerprints on the surfaces of various common objects and complicated objects on which fingerprints cannot be shown through a traditional method, and can be applicable to on-site detection. Accordingly, the method has the wonderful practical application value in the fingerprint identification field.
Description
Technical field
The present invention relates to fingerprint judging technique field, refer to a kind of method utilizing cellulose membrane and aqueous dye solutions to manifest laten fingerprints especially.
Background technology
Laten fingerprints, refers to through health nature secretions as perspiration and oils and fats, and under the effect of muscular strength, contact object surface thus the fingerprint lines formed, macroscopic visual not easily finds, is a modal class fingerprint in spot.Fingerprint has the feature of variant, the unchangeable and tactile thing trace of people.Fingerprint identification is one of the most reliable method of carrying out individual's identification, is used for investigating, disclosing and confirm crime in forensic science; Accident investigation and process in, the victim of some accidents or natural disaster or died, because of the condition of the injury or other reasons be with the naked eye beyond recognition time, the fingerprint extracting them often can provide definite identification; Fingerprint technique also can identify identity, in safety management and medical diagnosis in life at ordinary times.Science correctly finds, extract, manifest qualification fingerprint for carrying out investigation, improve safety detection there is important practice effect.
Fingerprint manifestation from single at first and simple method, develops into the professional technique of the subject knowledges such as integrated use physics, chemistry, a biology.Appearing Techniques of Human Fingerprints is developed so far a variety of principle diverse ways, the smoked aobvious aminoacid such as method and the 1,2,3-indantrione monohydrate developer method of significant powder brush method as the most frequently used in scene of a crime, iodine fumigation, silver nitrate method, 502 glue.But these traditional methods have following shortcoming: (1) has harm to the healthy of operator; (2) damage is caused to laten fingerprints; (3) laten fingerprints on some difficult object surfaces (bank note, leather, skin etc.) is not had to presentation capability or manifests weak effect.Along with the development of analytical technology, increasing Modern Scientific Instruments and technological means are applied in fingerprint detection field, and as electrochemical method, spectrographic method, mass spectrography, biotechnology is as immune labeled method.But these Appearing Techniques of Human Fingerprints often need to adopt special instrument or manifest process have infringement to fingerprint, and major part is not suitable for the developing latent finger prints of spot.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of simple, fast, harmless, environmental protection, low cost, high sensitivity, high-resolution, be suitable for object extensively and be applicable to the developing latent finger prints new method of spot, solve and on some difficult object, cannot manifest or manifest weak effect by traditional method and the problem such as intersection fingerprint manifestation effect is bad.
The method is with aqueous dye solutions and cellulose membrane for manifesting material, and fingerprint adhesive tape is transfer materials, and carry out manifesting laten fingerprints, concrete steps are as follows:
(1) cellulose membrane shears is cut into 2 × 2cm size, is placed in clean plastic culture dish for subsequent use;
(2) prepare three kinds of conventional ink solutions, concentration peace is according to the dilution of certain volume ratio: blue ink 0.4ml/10ml, red ink 0.6ml/10ml, burnt black ink 0.1ml/10ml.Prepare two kinds of aqueous dye solutions, concentration is respectively crystal violet 1mg/ml, Coomassie brilliant blue 10mg/ml;
(3) by laten fingerprints lightly respectively by the surface being pressed in cellulose membrane;
(4) choose laten fingerprints-cellulose membrane and soak several seconds in blue ink, burnt black ink, two kinds of dye solutions, until laten fingerprints clearly displays on cellulose membrane, obtain sample A, sample A is taken out, sucks water droplet unnecessary on laten fingerprints-cellulose membrane with filter paper;
(5) choose laten fingerprints-cellulose membrane and soak a period of time in red ink solution, until laten fingerprints clearly displays on cellulose membrane, obtain sample B, sample B is taken out, sucks water droplet unnecessary on laten fingerprints-cellulose membrane with filter paper;
(6) the sample A manifested in step (4) and (5) and sample B is positioned in horizontal table top posts, fixed extraction of taking pictures fingerprint image;
(7) by laten fingerprints lightly by being pressed in glass or other object to be detected surface;
(8) use the laten fingerprints on fingerprint adhesive tape transfer glass or other object surface to be detected, obtain laten fingerprints-fingerprint adhesive tape, then laten fingerprints-fingerprint adhesive tape is attached on cellulose membrane, obtain laten fingerprints-fingerprint adhesive tape-cellulose membrane;
(9) laten fingerprints-fingerprint adhesive tape-cellulose membrane obtained in step (8) is soaked a period of time in red ink solution, until laten fingerprints clearly displays on cellulose membrane, obtain sample C to be taken out, suck solution unnecessary on laten fingerprints-fingerprint adhesive tape-cellulose membrane with filter paper;
(10) the sample C manifested in step (9) is positioned in horizontal table top posts, fixed extraction of taking pictures fingerprint image.
Wherein, the described water-soluble dye solution manifested in material can be any water-soluble dye.
Except laten fingerprints-fingerprint adhesive tape-cellulose membrane is soaked a period of time in water-soluble dye solution in step (9), laten fingerprints-the fingerprint adhesive tape that can also obtain in step (9)-cellulose membrane fingerprint surface region overlay water-soluble dye, all the other steps are constant.
Above-mentioned manifested laten fingerprints, except oily laten fingerprints, can also be oil mixing with water laten fingerprints, invisible fingerprints of sweat or blood latent dactylogram.
Said method may be used for the laten fingerprints that the transfer of the surface such as common object (as glass, pottery, metal, paper, plastics) and difficult object (as bill, leather, skin) comes, and clearly can also manifest intersection fingerprint and outmoded laten fingerprints.
The beneficial effect of technique scheme of the present invention is as follows:
The present invention is simple and quick, fingerprint sample can't harm, cheaper starting materials is easy to get, process environment-friendly high-efficiency, effect resolution is high, manifesting of the laten fingerprints that the difficult object surface transfer being applicable to can not manifest from multiple common object and traditional method comes, also have intersection laten fingerprints and outmoded laten fingerprints and extraordinaryly manifest effect, and be applicable to the Site Detection of laten fingerprints.Therefore, the method has fabulous actual application value in fingerprint identification field.
Accompanying drawing explanation
Fig. 1 utilizes the inventive method to use the developing latent finger prints design sketch of blue ink on cellulose membrane;
Fig. 2 utilizes the inventive method to use the developing latent finger prints design sketch of burnt black ink on cellulose membrane;
Fig. 3 utilizes the inventive method to use the developing latent finger prints design sketch of crystal violet solution on cellulose membrane;
Fig. 4 utilizes the inventive method to use the developing latent finger prints design sketch of Coomassie Brillant Blue solution on cellulose membrane;
Fig. 5 utilizes the inventive method to use red ink solution at the developing latent finger prints design sketch of cellulose membrane;
Fig. 6 utilizes the inventive method to use red ink solution and cellulose membrane to manifest the laten fingerprints design sketch transferring to fingerprint adhesive tape from glass object surface;
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The present invention is directed to existing method cannot manifest or manifest weak effect and intersect the bad problem of fingerprint manifestation effect on difficult object, a kind of method utilizing cellulose membrane and aqueous dye solutions to manifest laten fingerprints is provided.
Following steps are adopted to carry out manifesting laten fingerprints:
(1) cellulose membrane shears is cut into 2 × 2cm size, is placed in clean plastic culture dish for subsequent use;
(2) prepare three kinds of conventional ink solutions, concentration peace is according to the dilution of certain volume ratio: blue ink 0.4ml/10ml, red ink 0.6ml/10ml, burnt black ink 0.1ml/10ml.Prepare two kinds of aqueous dye solutions, concentration is respectively crystal violet 1mg/ml, Coomassie brilliant blue 10mg/ml;
(3) by laten fingerprints lightly respectively by the surface being pressed in cellulose membrane;
(4) choose laten fingerprints-cellulose membrane and soak a period of time in blue ink solution and burnt black ink solution, two kinds of dye solutions, until laten fingerprints clearly displays on cellulose membrane, taken out, sucked water droplet unnecessary on laten fingerprints-cellulose membrane with filter paper;
(5) choose laten fingerprints-cellulose membrane and soak a period of time in red ink solution, until laten fingerprints clearly displays on cellulose membrane, taken out, suck water droplet unnecessary on laten fingerprints-cellulose membrane with filter paper;
(6) sample manifested in step (4) (5) be positioned in horizontal table top post, fixed extraction of taking pictures fingerprint image, the developing latent finger prints effect obtained as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5.
(7) by laten fingerprints lightly by being pressed in glass surface;
(8) use the laten fingerprints on fingerprint adhesive tape transfer glass or other object surface to be detected, obtain laten fingerprints-fingerprint adhesive tape, then laten fingerprints-fingerprint adhesive tape is attached on cellulose membrane, obtain laten fingerprints-fingerprint adhesive tape-cellulose membrane;
(9) laten fingerprints-fingerprint adhesive tape-cellulose membrane obtained in step (8) is soaked a period of time in red ink solution, until laten fingerprints clearly displays on cellulose membrane, taken out, sucked solution unnecessary on laten fingerprints-fingerprint adhesive tape-cellulose membrane with filter paper;
(10) sample manifested in step (9) is positioned in horizontal table top posts, fixed extraction of taking pictures fingerprint image.The developing latent finger prints effect obtained as shown in Figure 6.
The method is simple, harmless, fast, environmental protection, low cost, high sensitivity, to be suitable for object extensive.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. utilize cellulose membrane and aqueous dye solutions to manifest the method for laten fingerprints, it is characterized in that: with aqueous dye solutions and cellulose membrane for manifesting material, manifest with carrying out the high-resolution of multiple object surface laten fingerprints, concrete steps are as follows:
(1) cellulose membrane shears is cut into 2 × 2cm size, is placed in clean plastic culture dish for subsequent use;
(2) prepare three kinds of conventional ink solutions, concentration peace is according to the dilution of certain volume ratio: blue ink 0.4ml/10ml, red ink 0.6ml/10ml, burnt black ink 0.1ml/10ml; Prepare the aqueous solution of the two kinds of dyestuffs selected arbitrarily, concentration is respectively crystal violet 1mg/ml, Coomassie brilliant blue 10mg/ml;
(3) by laten fingerprints lightly respectively by the surface being pressed in cellulose membrane;
(4) choose laten fingerprints-cellulose membrane and soak several seconds in blue ink, burnt black ink, two kinds of dye solutions, until laten fingerprints clearly displays on cellulose membrane, obtain sample A, sample A is taken out, sucks water droplet unnecessary on laten fingerprints-cellulose membrane with filter paper;
(5) choose laten fingerprints-cellulose membrane and soak a period of time in red ink solution, until laten fingerprints clearly displays on cellulose membrane, obtain sample B, sample B is taken out, sucks water droplet unnecessary on laten fingerprints-cellulose membrane with filter paper;
(6) the sample A manifested in step (4) and (5) and sample B is positioned in horizontal table top posts, fixed extraction of taking pictures fingerprint image;
(7) by laten fingerprints lightly by being pressed in glass or other object to be detected surface;
(8) use the laten fingerprints on fingerprint adhesive tape transfer glass or other object surface to be detected, obtain laten fingerprints-fingerprint adhesive tape, then laten fingerprints-fingerprint adhesive tape is attached on cellulose membrane, obtain laten fingerprints-fingerprint adhesive tape-cellulose membrane;
(9) laten fingerprints-fingerprint adhesive tape-cellulose membrane obtained in step (8) is soaked a period of time in red ink solution, until laten fingerprints clearly displays on cellulose membrane, obtain sample C to be taken out, suck solution unnecessary on laten fingerprints-fingerprint adhesive tape-cellulose membrane with filter paper;
(10) the sample C manifested in step (9) is positioned in horizontal table top posts, fixed extraction of taking pictures fingerprint image.
2. a kind of method utilizing cellulose membrane and aqueous dye solutions to manifest laten fingerprints according to claim 1, it is characterized in that: described aqueous dye solutions is any aqueous dye solutions, described cellulose membrane is cellulose acetate membrane or nitric acid-hydrophilic membrane material of acetic acid cellulose mixture film.
3. a kind of method utilizing cellulose membrane and aqueous dye solutions to manifest laten fingerprints according to claim 1, is characterized in that: described laten fingerprints is oily laten fingerprints, oil mixing with water laten fingerprints, invisible fingerprints of sweat, blood latent dactylogram.
4. a kind of method utilizing cellulose membrane and aqueous dye solutions to manifest laten fingerprints according to claim 1, is characterized in that: fresh fingerprint, outmoded fingerprint and intersection fingerprint that described fingerprint is direct stamp fingerprint or comes from other object surface transfer with fingerprint adhesive tape.
5. a kind of method utilizing cellulose membrane and multiple aqueous dye solutions to manifest laten fingerprints according to claim 1, is characterized in that: described object comprises glass, pottery, paper, plastics, metal, bill, leather, skin.
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| CN201610022058.5A CN105411599B (en) | 2016-01-13 | 2016-01-13 | A method of showing latent fingerprint using cellulose membrane and aqueous dye solutions |
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| CN201610022058.5A CN105411599B (en) | 2016-01-13 | 2016-01-13 | A method of showing latent fingerprint using cellulose membrane and aqueous dye solutions |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106667497A (en) * | 2016-11-16 | 2017-05-17 | 北京科技大学 | Method for simultaneously transferring and demonstrating latent fingerprints by utilizing hydrophilic membrane and water solution |
| CN107179409A (en) * | 2017-05-17 | 2017-09-19 | 中国药科大学 | A kind of method extracted based on immunoblotting and show blood latent dactylogram |
| CN107219367A (en) * | 2017-05-17 | 2017-09-29 | 中国药科大学 | The extraction of protein component and process for show in a kind of latent fingerprint |
| WO2019195459A1 (en) | 2018-04-04 | 2019-10-10 | Board Of Trustees Of Northern Illinois University | Fingermark lifting and visualization device and methods of use thereof |
| CN114305401A (en) * | 2021-12-17 | 2022-04-12 | 公安部物证鉴定中心 | Three-level characteristic judgment method for displaying various types of fingerprints |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1266616A1 (en) * | 1995-05-01 | 2002-12-18 | Fuji Photo Film Co., Ltd. | Fingerprint image generating method and fingerprint image recording sheet |
| US6725801B1 (en) * | 2002-11-18 | 2004-04-27 | John H. Carrington | Multiple mount fingerprint ink dispenser |
| CN102115953A (en) * | 2010-12-07 | 2011-07-06 | 南京工业大学 | Electrostatic spinning nano-fiber film, and preparation method and finger detection method of electrostatic spinning nano-fiber film |
| CN103284728A (en) * | 2013-05-04 | 2013-09-11 | 中国科学院长春应用化学研究所 | Application of perylene derivative |
| CN104939839A (en) * | 2015-05-18 | 2015-09-30 | 北京科技大学 | Method for representing latent fingerprints through nitrocellulose membrane and water |
-
2016
- 2016-01-13 CN CN201610022058.5A patent/CN105411599B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1266616A1 (en) * | 1995-05-01 | 2002-12-18 | Fuji Photo Film Co., Ltd. | Fingerprint image generating method and fingerprint image recording sheet |
| US6725801B1 (en) * | 2002-11-18 | 2004-04-27 | John H. Carrington | Multiple mount fingerprint ink dispenser |
| CN102115953A (en) * | 2010-12-07 | 2011-07-06 | 南京工业大学 | Electrostatic spinning nano-fiber film, and preparation method and finger detection method of electrostatic spinning nano-fiber film |
| CN103284728A (en) * | 2013-05-04 | 2013-09-11 | 中国科学院长春应用化学研究所 | Application of perylene derivative |
| CN104939839A (en) * | 2015-05-18 | 2015-09-30 | 北京科技大学 | Method for representing latent fingerprints through nitrocellulose membrane and water |
Non-Patent Citations (3)
| Title |
|---|
| RICHA ROHATGI 等: "Small particle reagent based on crystal violet dye for developing latent fingerprints on non-porous wet surfaces", 《EGYPTIAN JOURNAL OF FORENSIC SCIENCES》 * |
| 沈怡 等: "浅析影响碳素墨水显现胶带指纹的若干因素", 《辽宁警专学报》 * |
| 陈振乾: "考马斯亮蓝显现蛋白手印研究", 《四川警官高等专科学校学报》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106667497A (en) * | 2016-11-16 | 2017-05-17 | 北京科技大学 | Method for simultaneously transferring and demonstrating latent fingerprints by utilizing hydrophilic membrane and water solution |
| CN107179409A (en) * | 2017-05-17 | 2017-09-19 | 中国药科大学 | A kind of method extracted based on immunoblotting and show blood latent dactylogram |
| CN107219367A (en) * | 2017-05-17 | 2017-09-29 | 中国药科大学 | The extraction of protein component and process for show in a kind of latent fingerprint |
| CN107219367B (en) * | 2017-05-17 | 2019-11-08 | 中国药科大学 | The extraction of protein component and process for show in a kind of latent fingerprint |
| WO2019195459A1 (en) | 2018-04-04 | 2019-10-10 | Board Of Trustees Of Northern Illinois University | Fingermark lifting and visualization device and methods of use thereof |
| US10866188B2 (en) | 2018-04-04 | 2020-12-15 | Board Of Trustees Of Northern Illinois University | Fingermark lifting and visualization device and methods of use thereof |
| CN114305401A (en) * | 2021-12-17 | 2022-04-12 | 公安部物证鉴定中心 | Three-level characteristic judgment method for displaying various types of fingerprints |
| CN114305401B (en) * | 2021-12-17 | 2024-03-15 | 公安部物证鉴定中心 | Three-level characteristic judgment method for displaying fingerprints of various types |
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