EP1897991A3 - Paper article having improved readability - Google Patents

Paper article having improved readability Download PDF

Info

Publication number
EP1897991A3
EP1897991A3 EP07115836A EP07115836A EP1897991A3 EP 1897991 A3 EP1897991 A3 EP 1897991A3 EP 07115836 A EP07115836 A EP 07115836A EP 07115836 A EP07115836 A EP 07115836A EP 1897991 A3 EP1897991 A3 EP 1897991A3
Authority
EP
European Patent Office
Prior art keywords
paper article
wavelength range
colorant
improved readability
converting material
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.)
Granted
Application number
EP07115836A
Other languages
German (de)
French (fr)
Other versions
EP1897991A2 (en
EP1897991B1 (en
Inventor
Kjell Olseke
Jan Olof Sehlin
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.)
Arctic Paper AB
Original Assignee
Arctic Paper AB
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 Arctic Paper AB filed Critical Arctic Paper AB
Publication of EP1897991A2 publication Critical patent/EP1897991A2/en
Publication of EP1897991A3 publication Critical patent/EP1897991A3/en
Application granted granted Critical
Publication of EP1897991B1 publication Critical patent/EP1897991B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/28—Colorants ; Pigments or opacifying agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
    • D21H21/52—Additives of definite length or shape
    • D21H21/54—Additives of definite length or shape being spherical, e.g. microcapsules, beads

Landscapes

  • Paper (AREA)

Abstract

A paper article comprising a wavelength converting material and/or a colorant is provided. The wavelength converting material has an absorption peak in the wavelength range of from 400 to 500 nm and an emission peak in the wavelength range of from 500 to 600 nm, while the colorant has an absorption peak in the wavelength range of from 600 to 700 nm. Such a paper article provides increased readability for persons suffering from cataract or cloudy vitreous body, and will have a preventive effect on the degeneration of the outer layer of the retina, and/or the development of myopia.
EP20070115836 2006-09-07 2007-09-06 Paper article having improved readability Not-in-force EP1897991B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0601845 2006-09-07

Publications (3)

Publication Number Publication Date
EP1897991A2 EP1897991A2 (en) 2008-03-12
EP1897991A3 true EP1897991A3 (en) 2011-06-08
EP1897991B1 EP1897991B1 (en) 2012-08-08

Family

ID=38894072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070115836 Not-in-force EP1897991B1 (en) 2006-09-07 2007-09-06 Paper article having improved readability

Country Status (2)

Country Link
EP (1) EP1897991B1 (en)
DK (1) DK1897991T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104611983B (en) * 2015-01-30 2016-11-09 汕头市中马印刷有限公司 A kind of production method of myopia prevention paper
CN104863009B (en) * 2015-05-06 2016-08-17 广州市雅迪文具有限公司 A kind of production method of light grey resisting fatigue paper
CN111497491B (en) * 2020-04-28 2020-12-22 江苏可一文化产业集团股份有限公司 Manufacturing method of green protection exercise book
CN113089374A (en) * 2021-03-02 2021-07-09 江西凯奇教育科技有限公司 Bionic myopia-preventing paper and processing technology and application thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1209448A (en) * 1998-04-17 1999-03-03 杨福明 Paper for vision-protection book and correction liquor used therefor
CN1237515A (en) * 1999-06-16 1999-12-08 于旭宏 Book capable of preventing myopia
CN1648183A (en) * 2004-12-28 2005-08-03 彭立安 Anti-shortsightedness ink and its preparing method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1209448A (en) * 1998-04-17 1999-03-03 杨福明 Paper for vision-protection book and correction liquor used therefor
CN1237515A (en) * 1999-06-16 1999-12-08 于旭宏 Book capable of preventing myopia
CN1648183A (en) * 2004-12-28 2005-08-03 彭立安 Anti-shortsightedness ink and its preparing method

Also Published As

Publication number Publication date
DK1897991T3 (en) 2012-10-15
EP1897991A2 (en) 2008-03-12
EP1897991B1 (en) 2012-08-08

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