CONFIDENTIAL POSTCARD

PURPOSE:To provide a handy confidential postcard having excellent contamination resistance and concealability of recording information. CONSTITUTION:A confidential postcard is formed by integrating a polyolefin resin laminated layer 4 and an electron beam curable resin layer 5 between first and seco...

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Bibliographic Details
Main Authors HARADA JUNJI, KOMATSU TAKAAKI, MATSUSHITA TOSHIHIKO
Format Patent
LanguageEnglish
Published 10.05.1994
Edition5
Subjects
ADHESIVES
BOOK COVERS
BOOKBINDING
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
COLOUR PRINTING
CORRECTING FLUIDS
DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR
DYES
FILES
FILLING PASTES
IMPREGNATING OR COATING OF PAPER
INKS
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
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MOVABLE-STRIP WRITING OR READING APPARATUS
NATURAL RESINS
PAINTS
PAPER NOT OTHERWISE PROVIDED FOR
PAPER-MAKING
PASTES OR SOLIDS FOR COLOURING OR PRINTING
PERFORMING OPERATIONS
POLISHES
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES
PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
PRODUCTION OF CELLULOSE
PULP COMPOSITIONS
SPECIAL PRINTED MATTER
STAMPS
TEXTILES
TRANSPORTING
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
TYPEWRITERS
USE OF MATERIALS THEREFOR
WOODSTAINS
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Summary:PURPOSE:To provide a handy confidential postcard having excellent contamination resistance and concealability of recording information. CONSTITUTION:A confidential postcard is formed by integrating a polyolefin resin laminated layer 4 and an electron beam curable resin layer 5 between first and second self-color development type pressure sensitive recording sheets 3 and 8, and formed by partly printing desensitizing ink on a pressure sensitive recording layer 7 of the sheet and further printing a ground tint thereon. Or, a ground tint is printed with desensitizing ink containing colored dyeing pigment in such a manner that a ratio of mean particle sizes of microcapsules to be used for the first and second sheets is 1:(0.4-0.6) and a mean particle size of the first microcapsule is 6-10mum.
Bibliography:Application Number: JP19920282977