SHEET FOR INFORMATION RECORDING

• Main Authors: OGINO AKITO, MATSUMORI YASUAKI
• Format: Patent
• Language: English; Japanese
• Published: 17.11.2016
• Subjects: BOOK COVERS; BOOKBINDING; COLOUR PRINTING; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR; FILES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LINING MACHINES; LOOSE LEAVES; MOVABLE-STRIP WRITING OR READING APPARATUS; PERFORMING OPERATIONS; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; SPECIAL PRINTED MATTER; STAMPS; TRANSPORTING; TYPEWRITERS

PROBLEM TO BE SOLVED: To provide a sheet for information recording easy to record variable information, with recorded information not visually recognized or almost not visually recognized during visible light irradiation, and visually recognized during ultraviolet or a part of short wavelength visible light irradiation, less in glossiness difference and color tone difference of a recorded location and non-recorded location (white paper part) of the recorded information, in which the presence of invisible information itself is hardly visually recognized.SOLUTION: There is provided a sheet for information recording with recorded information not visually recognized or almost not visually recognized during visible light irradiation, and visually recognized during ultraviolet or a part of short wavelength visible light irradiation, having an information recording layer on a supporter, where the information recording layer contains a binder, a pigment and a benzotriazole-based compound represented by the following formula (where n represents 1 or 2, Rrepresents a hydrogen atom when n is 1 and a methylene group when n is 2 and Rrepresents a linear or branched alkyl group having 1 to 30 carbon atoms).SELECTED DRAWING: None 【課題】可変情報の記録が容易であり、記録された情報が可視光照射時には視認されず又はほぼ視認されず、紫外光又は一部の短波長可視光照射時に視認でき、記録された情報の記録箇所と非記録箇所（白紙部分）の光沢差や色調差が少なく、不可視情報の存在そのものが視認され難い情報記録用シートを提供する。【解決手段】記録情報が可視光照射時には視認されず又はほぼ視認されず、紫外光又は一部の短波長可視光照射時に視認される情報記録用シートであって、支持体上に情報記録層を有し、該情報記録層がバインダー、顔料及び下式で表されるベンゾトリアゾール系化合物を含有する情報記録用シートである。（式中、ｎは１又は２を表し、Ｒ１は、ｎが１の場合は水素原子、ｎが２の場合にはメチレン基を表し、Ｒ２は炭素数が１〜３０の直鎖又は分岐したアルキル基を表す。）【選択図】なし