GB2010127A - Powder distributing device for detecting fingerprints - Google Patents

Powder distributing device for detecting fingerprints

Info

Publication number
GB2010127A
GB2010127A GB7835136A GB7835136A GB2010127A GB 2010127 A GB2010127 A GB 2010127A GB 7835136 A GB7835136 A GB 7835136A GB 7835136 A GB7835136 A GB 7835136A GB 2010127 A GB2010127 A GB 2010127A
Authority
GB
United Kingdom
Prior art keywords
powder
piezo
reservoir
mesh
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB7835136A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB7835136A priority Critical patent/GB2010127A/en
Publication of GB2010127A publication Critical patent/GB2010127A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/057—Arrangements for discharging liquids or other fluent material without using a gun or nozzle
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • B05B5/0531—Power generators

Abstract

A powder distributer comprises a housing (10) having a reservoir (14) containing fingerprint dusting powder (22) which can be driven out through a mesh (20) under the action of an electric field between the reservoir and a surface suspected of containing fingerprints, said field being produced by a piezo-electric powered unit (28) incorporated into the housing with a squeeze grip actuator lever (32) for actuating the piezo-electric crystal. The mesh (20) is covered by a removable cover (24) or an apertured plate (38) having a movable member for closing off the apertures (40) in one portion. A rectifying circuit (37) is included for ensuring that the charge conveyed to the dusting powder (22) is of one polarity. <IMAGE>
GB7835136A 1977-08-31 1978-08-31 Powder distributing device for detecting fingerprints Withdrawn GB2010127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7835136A GB2010127A (en) 1977-08-31 1978-08-31 Powder distributing device for detecting fingerprints

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3640677 1977-08-31
GB7835136A GB2010127A (en) 1977-08-31 1978-08-31 Powder distributing device for detecting fingerprints

Publications (1)

Publication Number Publication Date
GB2010127A true GB2010127A (en) 1979-06-27

Family

ID=26263107

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7835136A Withdrawn GB2010127A (en) 1977-08-31 1978-08-31 Powder distributing device for detecting fingerprints

Country Status (1)

Country Link
GB (1) GB2010127A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128900A (en) * 1982-10-29 1984-05-10 Theoktiste Christofidis Ionising spray
FR2551364A1 (en) * 1983-08-31 1985-03-08 Brunet Philippe Device for spraying cut textile fibres.
RU2469647C2 (en) * 2007-04-12 2012-12-20 Нортгемптоншир Полис Оторити Fingerprint detection
CN104622477A (en) * 2015-03-10 2015-05-20 黄大明 Method and device for dipping fingerprint powder by using fingerprint brush

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128900A (en) * 1982-10-29 1984-05-10 Theoktiste Christofidis Ionising spray
FR2551364A1 (en) * 1983-08-31 1985-03-08 Brunet Philippe Device for spraying cut textile fibres.
RU2469647C2 (en) * 2007-04-12 2012-12-20 Нортгемптоншир Полис Оторити Fingerprint detection
CN104622477A (en) * 2015-03-10 2015-05-20 黄大明 Method and device for dipping fingerprint powder by using fingerprint brush

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)