Invention Grant
- Patent Title: Fingerprint detection powder
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Application No.: US16497261Application Date: 2017-12-27
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Publication No.: US11427713B2Publication Date: 2022-08-30
- Inventor: Kokichi Tani , Junya Fujioka
- Applicant: KINSEI MATEC CO., LTD.
- Applicant Address: JP Osaka
- Assignee: KINSEI MATEC CO., LTD.
- Current Assignee: KINSEI MATEC CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JPJP2017-083037 20170419
- International Application: PCT/JP2017/047087 WO 20171227
- International Announcement: WO2018/193669 WO 20181025
- Main IPC: C09C3/12
- IPC: C09C3/12 ; A61B5/1172

Abstract:
ABSTRACT A fingerprint detection powder that is capable of collecting a clear fingerprint image even from a sample with a smaller amount of fingerprint constituents adhered thereto and a sample with a smooth glassy surface. The fingerprint detection powder contains pigment particles and calcium lactate. The pigment particles preferably contain at least one selected from titanium oxide, aluminum oxide, zinc oxide, zirconium oxide, colcothar, yellow iron oxide, black iron oxide, silica, carbon black, aluminum powder, and copper powder. The surface of the pigment particles is preferably covered with the calcium lactate. The fingerprint detection powder further contains a silane coupling agent. Preferably, the silane coupling agent is n-octyltriethoxysilane. The surface of the pigment particles is preferably covered with the n-octyltriethoxysilane as well as the calcium lactate.
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