AlNiCo Security ink composition comprising AlNiCo based magnetic particle

• Main Authors: CHOI HYE JUN, KIM HYUN SOO, KIM SU DONG, CHOE WON GYUN, KIM HONG KEON, KIM E DEN
• Format: Patent
• Language: English; Korean
• Published: 29.04.2020
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; BOOK COVERS; BOOKBINDING; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR; DYES; ELECTRICITY; FILES; FILLING PASTES; INDUCTANCES; INKS; LOOSE LEAVES; MAGNETS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MOVABLE-STRIP WRITING OR READING APPARATUS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; SPECIAL PRINTED MATTER; TRANSFORMERS; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

The present invention relates to a security ink composition comprising AlNiCo-based magnetic particles with ultrafine particles of a D50 of 12 μm or less, having uniform magnetic properties for each particle due to remarkably small composition variation, implementing a highly secure element, having pale color properties which can conceal dark colored magnetic particles, having enhanced security which can be distinguished from hard magnetic materials only with expensive recognition equipment, and having an aptitude for printing, thereby being suitable for an ink of various conventional uses. 본 발명에 따른 보안 잉크 조성물은 함유되는 AlNiCo계 자성입자가 D이 12 ㎛ 이하인 초미세 입자임과 동시에, 조성 편차가 현저하게 작아 입자별 균일한 자성특성을 가질 수 있으며, 고도의 형상을 갖는 보안요소의 구현이 가능하고, 어두운 색상의 자성입자를 은폐할 수 있는 담색 특성을 가지고, 고가의 인식장비로만 경자성체와 구별되어 인식가능한 강화된 보안성을 가지며, 인쇄 적성을 가져 종래의 다양한 용도의 잉크에 적합한 장점이 있다.