WO1991002653A1 - Papier d'enregistrement thermosensible - Google Patents

Papier d'enregistrement thermosensible Download PDF

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Publication number
WO1991002653A1
WO1991002653A1 PCT/JP1989/001121 JP8901121W WO9102653A1 WO 1991002653 A1 WO1991002653 A1 WO 1991002653A1 JP 8901121 W JP8901121 W JP 8901121W WO 9102653 A1 WO9102653 A1 WO 9102653A1
Authority
WO
WIPO (PCT)
Prior art keywords
recording paper
heat
paper
sensitive recording
support
Prior art date
Application number
PCT/JP1989/001121
Other languages
English (en)
Japanese (ja)
Inventor
Yoshimi Ishibashi
Katsumi Moronuki
Original Assignee
Honshu Paper Co., Ltd.
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 Honshu Paper Co., Ltd. filed Critical Honshu Paper Co., Ltd.
Priority to EP89911885A priority Critical patent/EP0439612B1/fr
Priority to DE68918287T priority patent/DE68918287T2/de
Publication of WO1991002653A1 publication Critical patent/WO1991002653A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/41—Base layers supports or substrates

Definitions

  • the present invention relates to a thermosensitive recording paper, and more particularly, to a thermosensitive recording paper which is inexpensive, has high storage stability and high reliability for thermal heads.
  • the heat-sensitive recording method using a basic colorless dye and an acidic substance that causes the basic colorless dye to develop a color when heated has characteristics that a developing step is not required and that the maintenance of the hardness is easy. It is widely used for battery rims, printers, and recorders of measuring instruments.
  • thermal recording paper that does not contain waste paper is used as a support for thermal recording paper.However, due to the demand for cost reduction of thermal recording paper and the viewpoint of recycling paper pulp, thermal recording paper will be used in the future. It is possible that more and more waste paper is being introduced into the support.
  • an object of the present invention is to provide a thermosensitive recording paper which is inexpensive and resource-saving, and has high storage stability and high reliability for thermal heads.
  • the present inventors have conducted intensive studies to achieve the above object, and as a result, the support of the heat-sensitive recording paper contains waste paper, and the amount of the residual surfactant contained in the support has been reduced to 100 m or less. By doing the above eyes I found that the target could be achieved. Further, it has been found that providing a barrier layer between the support and the heat-sensitive recording layer can provide a further excellent effect.
  • waste paper is generally made from a combination of the following three steps.
  • the thermal recording paper When the support of the thermal recording paper simply contains waste paper, the thermal recording paper may be discolored during storage at high humidity, affected by the surfactant of the deinking agent used in the deinking step of step (3). Causes background blur when stored at high temperatures,
  • the dropout of the thermal head may occur.
  • the present inventors have studied the effects of these surfactants.
  • the surfactants are polyalkylene alkylene alkyl ether, polyoxyalkylene alkyl ether, and polyoxyethylene alkyl ether.
  • Nonionic surfactants such as pyrene block polymer or quaternary compounds
  • surfactants such as ammonium salts, alkyl trimethyl chloride, cetyl trimethyl ammonium chloride, ⁇ -lide, and alkyl benzyl ammonium chloride, etc. Discoloration during high-humidity storage and background capri during high-temperature storage occur, while surfactants are fatty acid ken, alkylbenzenesulfonate, high-grade
  • the present invention provides a heat-sensitive recording paper provided with a heat-sensitive recording layer containing a basic colorless dye and an acidic substance that causes the basic colorless dye to develop a color when heated.
  • the present invention relates to a thermosensitive recording paper characterized in that the content of the residual surfactant contained in the support is not more than 0 ppm by ppm.
  • a sheet containing waste paper is used as the support sheet used for the thermal recording paper of the present invention.
  • Waste paper is a generic term for used paper or paperboard, or cuttings of such paper.
  • the support of the present invention may be formed entirely of waste paper. However, it is preferable to contain waste paper in an amount of 60% or less. If the amount is more than this, the strength of the support tends to decrease and the whiteness tends to deteriorate.
  • the content of the residual surfactant contained in the support is generally required to be 10 to 0 ppm or less, preferably 800 ppm or less. As the content of the residual surfactant increases, the storage stability deteriorates, and the dots easily drop out.
  • Examples of the base t raw colorless dye used in the heat-sensitive recording paper of the present invention include 3,3-bis (p-dimethylaminophenyl) 16-dimethylaminophthalide, 3,3-bis (p-dimethylaminophenyl) phthalide, 3— (p-dimethylaminophenyl) 1-3_ (1,2—dimethyltin-ru 3 ) Phthalide, 3 — (p — dimethylaminophenyl) 1 3 — (2 — methylindole — 3 — yl) phthalide, 3, 3 — bis (1, 2 —Dim Chill Din —Rou 3 — 1) 5-dimethylaminophthalide, 3, 3-bis (1, 2-dimethylindol-3-yl) 1 6-dimethylaminophthalide, 3, 3-bis ( 9 —Ethylka rubazoru 3 —yl) 100 — dimethylaluminophthalide, 3,3 —bis (2—
  • Diphenylmethanine dyes such as I.sup.0-nyllo-co-alumina, benzoyzolero-yco-methylene dyes, and p-nitrobenzene dyes such as p-nitrobenzene's ylero-ikomethylene blue; 3—methylsilyl pyro-naphthovirane, 3—ethylsilyl pyronaphthovirane, 3—vinyl pyrazine naphthopyran, 3 ⁇ nilyl pyrazine naphthopyran,
  • Spiro dyes such as methyl naphtho (6 '— methoxybenzo) spiropyran, 3 — propyl spirodibenzopyran, and rhodamine B — anilinolactor Lactam dyes, such as lactam, ⁇ -damin ( ⁇ —dichloroaniline) lactam, and rhodamine ( ⁇ —chloroanilino) lactam , 3 — dimethylamino 7 — methoxyfluoran, 3
  • inorganic or organic acidic substances that cause a basic colorless dye to develop color when heated are known, for example, activated clay, acidified clay, and Attano.
  • Inorganic acidic substances such as rugitite, bentonite, colloidal iron, aluminum silicate, etc., 4-t.er L-butyl phenol, 4-hydroxifenox, Naphthol, ⁇ —Naph Toll, 4—Hydroxy acetonol, 4—tert—year-old quilt, 2,2'-jijidokijifenol, 2,2'— Methylene bis (4-methyl-6-ter (_—isobutylphenol), 4, 4'-isopropylidenbis (2 —!
  • the ffl ratio of the salty colorless dye and the acidic substance in the heat-sensitive recording layer is appropriately selected according to the type of the basic colorless dye and the acidic substance to be used. Generally 1 to 5 parts by weight, preferably 1 part by weight of basic colorless dye, preferably Or ii About 0 parts by weight of acidic substances are used.
  • water is generally used as a dispersion medium, and a basic colorless dye and an acid are mixed with a mill such as a ball mill, an attritor, and a sand grinder.
  • a mill such as a ball mill, an attritor, and a sand grinder.
  • the substance is dispersed together or separately and prepared as a coating solution.
  • the dispersed particles are as small as possible, and more specifically, it is desirable that the particles be dispersed to particles of 2 m or less.
  • starches, hide mouth resilose, methylcellulose, carboxymethylcellulose, gelatin, casein, arabic gum, polyvinyl alcohol, disobutylene are used as adhesives.
  • the copolymer (d) or the like is used in an amount of about 10 to 40% by weight, or about 15 to 0 to 0% by weight of the total solid.
  • an assistant for each electrode can be added to the coating solution.
  • thermosensitive recording paper having further improved discoloration during storage, background capri, and reliability against thermal head.
  • a polymer layer having a film-forming property is used for one layer of the barrier, such as casein, polyvinyl alcohol, ammonium alginate, methyl acetate resin, hydroxyrese resin J-relose, and carboxyme.
  • the coating amount is generally 0.3 X m J to 5.0 g / m, preferably 0.5 g Z m 'to 2.0 g Z rrf ⁇ . When the amount is less than 0.3 g Z nf, the effect of blocking the effect of the surfactant is reduced. On the other hand, when the amount is larger than 5.0 g Z rrf, the image quality tends to deteriorate.
  • a protective layer may be provided on the heat-sensitive recording layer, if necessary. Further, an intermediate layer containing a pigment may be further provided on one of the barrier layers.
  • Black coloring basic dye 3 (N-ethyl-N—isomil)
  • Each of the solutions (1) and (2) was dispersed with a sand grinder so that the dispersed particles had an average particle size of 2 ⁇ m or less.
  • Solution C was dispersed with a homomixer for i 0 minutes
  • the above heat-sensitive paint was applied to 50 g / m 'base paper of rice tsubo with a residual amount of 240 ppm of anionic surfactant (sodium alkylbenzene sulfonate) at a blending ratio of waste paper of 40%. , the coating amount after drying 5 g Z m s become O and urchin coated, dried and subjected to further calendars first processing, base of the recording surface Hot-Thermal recording paper with a smoothness of 6 6 seconds was obtained.
  • anionic surfactant sodium alkylbenzene sulfonate
  • Example 3 obtained thermal recording paper
  • Example 4 Thermal recording was performed in the same manner as in Example 1 from a base paper of 50 gZn of 50 g / m2 of non-woven surfactant (polyoxyethylene alkylphenyl ether) with a blending ratio of waste paper of 60% and a nonionic surfactant (polyoxyethylene alkylphenyl ether) of 501 pm.
  • Example 4 where paper was obtained
  • thermosensitive recording paper Same as Example 1 from 50 gZrf base paper with 50% rice tsubo containing 5% by weight of waste paper and a residual amount of cation-based surfactant (alkyltrimethylammonium chloride) of 7% () ppm Thus, a thermosensitive recording paper was obtained.
  • cation-based surfactant alkyltrimethylammonium chloride
  • thermosensitive recording paper From the base paper of 50 gZrrf of rice tsubo with a blending ratio of waste paper of 50% and a residual amount of an anionic surfactant (sodium alkyl benzenesulfonate) of 950 pm, In the same manner, a thermosensitive recording paper was obtained. Comparative Example 1
  • Thermal recording paper was obtained in the same manner as in Example 1.
  • thermosensitive recording paper was obtained in the same manner as in Example 4, except that polyvinyl alcohol was applied on the base paper so as to give 1 g Zrrf.
  • thermosensitive recording paper was obtained in the same manner as in Example 5, except that polyvinyl alcohol was applied on the base paper so as to be 1 g Zn.
  • thermosensitive recording paper was obtained in the same manner as in Example 7, except that the coating amount of polyvinyl alcohol was 2 g Z rn s .
  • thermosensitive recording paper wrapped around the platen and secure the platen roll and the samlal head (0.15 kgf SQV-85% R II Under environmental conditions and stored for 20 hours with the voltage applied to the head, solid printing was performed and the dot missing rate was examined.
  • ⁇ Dot missing rate is 5 to 10% or less
  • X dot missing rate is 10% or more
  • Non-ion type "polyethylene alkyl alkyl ether"
  • the residual amount of the surfactant is set to 100 m or less even though the waste paper is blended.
  • Highly reliable thermal recording paper for thermal heads can be obtained. Further, it can be seen that the performance is further improved by providing one barrier layer between the support and the thermal recording paper.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Abstract

L'invention se rapporte à du papier d'enregistrement thermosensible et plus particulièrement à du papier d'enregistrement thermosensible composé d'une couche d'enregistrement thermosensible contenant une teinture de base incolore et une substance acide entraînant la coloration de la teinture de base incolore lors de l'application de chaleur sur un substrat. Dans le papier d'enregistrement thermosensible de la présente invention, le support contient du papier usagé et la quantité d'agent tensio-actif résiduelle contenue dans le support est inférieure à 1,000 ppm. La présente invention permet d'obtenir un papier thermosensible qui est économique et qui se caractérise par une stabilité en stockage élevée et par une fiabilité élevée dans des conditions de chute du potentiel thermique.
PCT/JP1989/001121 1989-08-23 1989-10-31 Papier d'enregistrement thermosensible WO1991002653A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP89911885A EP0439612B1 (fr) 1989-08-23 1989-10-31 Papier d'enregistrement thermosensible
DE68918287T DE68918287T2 (de) 1989-08-23 1989-10-31 Wärmeempfindliches aufzeichnungspapier.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP21714389 1989-08-23
JP1/217143 1989-08-23

Publications (1)

Publication Number Publication Date
WO1991002653A1 true WO1991002653A1 (fr) 1991-03-07

Family

ID=16699530

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1989/001121 WO1991002653A1 (fr) 1989-08-23 1989-10-31 Papier d'enregistrement thermosensible

Country Status (3)

Country Link
EP (1) EP0439612B1 (fr)
DE (1) DE68918287T2 (fr)
WO (1) WO1991002653A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05162443A (ja) * 1991-12-16 1993-06-29 Kanzaki Paper Mfg Co Ltd 感熱記録紙

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2789040B1 (fr) 1999-02-02 2001-03-09 Armtop Chariot porte-charge et son vehicule d'embarquement

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57128346A (en) * 1981-02-02 1982-08-09 Honshu Paper Co Ltd Paper for electrophotography and form
JPS5840556A (ja) * 1981-09-04 1983-03-09 Ricoh Co Ltd 電子写真圧力定着転写紙及びその転写紙用原紙の製造法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5825986A (ja) * 1981-08-07 1983-02-16 Ricoh Co Ltd 感熱記録材料
SE439787B (sv) * 1984-03-19 1985-07-01 Berol Kemi Ab Sett att reducera missfergning och/eller klibbighet vid upparbetning av avfallspapper

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57128346A (en) * 1981-02-02 1982-08-09 Honshu Paper Co Ltd Paper for electrophotography and form
JPS5840556A (ja) * 1981-09-04 1983-03-09 Ricoh Co Ltd 電子写真圧力定着転写紙及びその転写紙用原紙の製造法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0439612A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05162443A (ja) * 1991-12-16 1993-06-29 Kanzaki Paper Mfg Co Ltd 感熱記録紙

Also Published As

Publication number Publication date
DE68918287D1 (de) 1994-10-20
EP0439612A4 (en) 1991-12-11
DE68918287T2 (de) 1995-03-16
EP0439612A1 (fr) 1991-08-07
EP0439612B1 (fr) 1994-09-14

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