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
  • D21H19/00—Coated paper; Coating material
  • D21H19/10—Coatings without pigments
  • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
  • D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
• • 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
  • D21H19/00—Coated paper; Coating material
  • D21H19/10—Coatings without pigments
  • D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
• • 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
  • D21H21/16—Sizing or water-repelling agents

Definitions

• the present invention relates to an information recording sheet used in a surface image printing apparatus of an ink jet system as well as a xerographic system. More specifically, by using polymer-stabilized alkenyl ketene dimer as an internal sizing agent and combining it with a specific surface coating solution, it can be used not only as a xerographic method but also as an ink jet recording paper.
• the present invention also relates to an information recording sheet which can be used. Background art
• the mainstream is the xerographic method, but it has features such as low noise, low running cost, light weight, compactness, and easy multicoloring.
• the ink jet method has been used.
• xerographic transfer paper has often been diverted as ink-jet recording paper.
• the recording paper of the ink jet recording method because the ink is water-soluble, it has good absorption in the thickness direction of the recording paper, high absorption speed, high print color density, etc. More advanced characteristics are required.
• an information recording paper called a xerographic single method and an ink jet method which are used to enhance the properties required for an ink jet by enhancing the size processing of the xerographic transfer paper.
• No satisfactory quality has yet been obtained.
• reactive sizing agents such as alkyl ketene dimer (AKD) or alkenyl succinic anhydride (ASA) have often been used as sizing agents to prevent ink bleeding because they exhibit excellent performance as information recording paper. Paper that has been used with these sizing agents is not suitable for use as inkjet recording paper because of the bleeding problem and the lack of uniform recording quality. Not converted.
• alkyl group of the alkyl ketene dye or the alkenyl group of the alkenyl succinic anhydride has a highly hydrophobic chain having 1618 carbon atoms.
• alkenyl ketene dyes have also been used as sizing agents (such as “Aquapel” (registered trademark) 421 of Honey Curly's Inc.).
• the alkenyl group of the alkenyl ketene dimer is an unsaturated chain having a double bond, has a higher reactivity than the alkyl ketene dimer, and forms a strong bond with cellulose.
• Ink jet recording paper using alkenyl ketene dye has the same disadvantages as those using alkyl ketene dye because of its hydrophobicity.
• US Pat. No. 5,685,815 discloses that at 35 ° C., at least one branched alkyl group or It discloses that a multimer of 2-year-old xetanone (ketene) having a straight-chain alkyl group is used as an internal sizing agent, and it is also shown that favorable results can be obtained as xerographic transfer paper. However, nothing is disclosed about the characteristics as inkjet recording paper. Disclosure of the invention
• the inventors of the present invention have conducted various studies on the characteristics of the known ketene dimer-based sizing agent, and as a result, have found that even when alkenyl ketene die is used alone as an internal sizing agent, Although no good quality recording paper is obtained, it is converted to a polymer-stabilized alkenyl ketene dimer by reacting it with a specific polymer, and styrene acrylic emulsion (SAE) is used as a surface sizing agent.
• SAE styrene acrylic emulsion
• the polymer-stabilized alkenyl ketene dimer When used in combination, has the same degree of water-tightness as the alkyl ketene dimer-alkane diketene dimer, but the horizontal ink flow to the water-based ink.
• the present inventors have found that the bleeding can be prevented, the good printing uniformity can be given, and the bleeding can be eliminated, and the present invention has been completed.
• the present invention relates to an information recording paper, wherein a polymer-stabilized alkenyl ketene dimer, especially polyamidoepichlorohydrin or polydiaryldimethylammonium lip is used as an internal sizing agent.
• a polymer-stabilized alkenyl ketene dimer especially polyamidoepichlorohydrin or polydiaryldimethylammonium lip is used as an internal sizing agent.
• a alkenyl ketene dimer stabilized with any of the above hereinafter referred to as “polymer-stabilized alkenyl ketene dimer”).
• any of polyamide epichlorohydrin and polydiaryl dimethyl ammonium chloride (po 1 y—DADMAC) can be used.
• the latter is superior in terms of characteristics and ink jet printing characteristics.
• polydiaryl dimethyl ammonium chloride (po1y-DADMMA)
• C) is already well known in the paper industry as an anionic colloidal neutralizer, but has not been used as a stabilizer for alkenyl ketene dimer.
• alkenyl ketene dimer a well-known alkenyl ketene dimer used as a sizing agent can be used.
• commercially available Aquapel (registered trademark) 421 manufactured by Hercules Corporation was used.
• the present invention provides a method for stabilizing a polymer as an internal sizing agent in information recording paper With using an alkenyl ketene dimer and foremost, as a filler is also wet milling C a C_ ⁇ 3 using sedimentary C a C0 3, further comprising the three components of the paper into the following (a) ⁇ (c) The coating liquid is applied. .
• the addition amount of the polymer-stabilized alkenyl ketene dimer may not be too large or too small, and the optimal addition amount is an effective amount per ton of paper, that is, l to 2 in terms of alkenyl ketene dimer (hereinafter the same). kg.
• the addition amount of the filler C a C0 3 is 1 8 wt% at most in the 7 0 gZm 2 paper
• This material easily migrates to the paper surface and reduces the toner's fixability.
• Coating with a size press is performed by mixing oxidized starch, cationic oxidized starch or enzyme-modified starch with NaC1 and a surface sizing agent, styrene acrylic emulsion (SAE). Applied on pure size press rolls.
• SAE styrene acrylic emulsion
• NaC1 is added in an amount of 2 to 7 kg per ton of paper to reduce the electrostatic charge to 100 mV or less.
• SAE a surface sizing agent, is used to improve Add 1 to 2 kg of dry SAE per ton of paper.
• the coating weight on the size press should be between 2 g / m 2 and 3 gZm 2 so that the coating is uniform.
• softwood bleached kraft pulp NKP
• hardwood bleached kraft pulp LKP
• Alkenyl ketene dimer stabilized by ammonium chloride poly-DA DMA C
• surface Starch used for coating: oxidized starch
• coating liquid coating amount 3 gm 2
• S AE surface sizing agent usage: 4.5 kg / ton
• basis weight 0 gZm 2 .
• a xerographic copier was used to evaluate the state of fixation of the toner on the paper.
• As an optical density tester for example, a Macbeth Model RD 918 and a magic tape 810 manufactured by Scotch as a seal tape are used with a width of 1 inch and 2 inches (1.27 cm).
• an optical density tester for example, a Macbeth Model RD 918 and a magic tape 810 manufactured by Scotch as a seal tape are used with a width of 1 inch and 2 inches (1.27 cm).
• an optical density tester for example, a Macbeth Model RD 918 and a magic tape 810 manufactured by Scotch as a seal tape are used with a width of 1 inch and 2 inches (1.27 cm).
• a first step copy a block pattern with an optical density in the range of 0.6 to 0.7 on paper.
• the actual optical density is measured. Attach the sealing tape to the copy surface of the paper, and apply a roller 10 times to the surface of the seal tape with a pressure of 0.1 to
• the toner fixability of the paper obtained in this example was “95.34%”. (Degree of curl after copying)
• the degree of curl after copying was measured using A4 size paper. It was determined by comparing with a curl degree pattern of up to 10. This is the same method as the Japanese TAPPI standard. The curl degree of the paper obtained in this example after copying was “3”.
• the multifeed of paper is indicated by the number of multifeeds by continuously passing 2500 sheets through a high-speed printer.
• the double feed test result of the paper obtained in this example was “0”, and no double feed was observed.
• NNKP Pulp bleached softwood bleached pulp
• LLKP bleached hardwood bleached pulp
• ASMAC polydiallyldimethylammonium mouth lid
• surface used starch starch was used in the same manner as in Example 1 except that the enzyme-modified starch was used. The characteristics of the paper obtained were measured.
• the toner fixing property of the paper obtained in this example was “95.34%”, the curl degree after copying was “3”, and the multifeed test result was “0”.
• Table 1 shows the quality evaluation of the paper obtained in Example 2 as ink jet recording paper together with the results of other examples or comparative examples.
• NNKP softwood bleached kraft pulp
• LLKP broadleaf bleached kraft pulp
• Alkyl ketene dimer 1.083 kg Z ton
• NaC1 used in size press 6.10 kg Z ton
• Starch used for surface coating Example 1 except that it was oxidized starch Paper was prepared in the same manner, and the characteristics of the obtained paper were measured in the same manner as in the measurement method described in Example 1.
• the toner fixing property of the paper obtained in this example was “92.20%”, the force after copying was “3”, and the multifeed test result was “2”.
• Table 1 shows the quality evaluation of the paper obtained in Comparative Example 1 as ink jet recording paper together with the results of other Examples or Comparative Examples.
• softwood bleached kraft pulp NNKP
• hardwood bleached kraft pulp LLKP
• Alkyl ketene dimer commonly used as a sizing agent 1.100 kg / ton
• NaC1 used in size press 6.05 kg / ton
• starch used for surface coating enzyme A paper was prepared in the same manner as in Example 1 except that the modified starch was used, and the characteristics of the obtained paper were measured in the same manner as in the measurement method described in Example 1.
• the constant toner adhesion of the paper obtained in this example was “91.50%”, the degree of curl after copying was “3”, and the result of the double feed test was “2”.
• Table 1 shows the quality evaluation of the paper obtained in Comparative Example 2 as an ink jet recording paper together with the results of other Examples or Comparative Examples.
• the paper of the present invention used has a high hydrophobicity and is less slippery than the one using alkyl ketene dimer as an internal sizing agent.
• the paper of the present invention obtained by the above-described combination has excellent recording quality, bleeding, fuzzing, ink permeability, etc., even when used for ink jet recording, as compared with those using an alkyl ketene dimer. Therefore, the paper is suitable for color ink jet recording, and it can be seen that the paper can be used in both xerographic copying machines and ink jet printers.
• the paper of the present invention is excellent in toner fixability in a xerographic copying machine and eliminates the problem of multi-feeding of the paper, so that it can be suitably used as a xerographic transfer paper, Even for ink jet recording, it has excellent recording quality, bleeding, fathering, ink permeability, etc., so it can be used as recording paper for xerographic copiers and ink jet printers.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Paper (AREA)
• Ink Jet Recording Methods And Recording Media Thereof (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=18935059

Family Applications (1)

Country Status (3)

Families Citing this family (5)

Citations (5)

• 2001
  • 2001-03-19 JP JP2001078446A patent/JP4091748B2/ja not_active Expired - Fee Related
• 2002
  • 2002-03-18 WO PCT/JP2002/002561 patent/WO2002075050A1/ja not_active Ceased
  • 2002-03-18 CN CN 02801722 patent/CN1220809C/zh not_active Expired - Fee Related

Patent Citations (5)

Also Published As

Similar Documents

Legal Events