Abstract: An object is to provide a recorded article or sticker whereby counterfeited articles and genuine articles can be visually distinguished in simple fashion in the market and wherein it is not possible to identify in the market the location and type of the anti-counterfeiting measures that have been taken. Both an overt region 3 (which can be recognized visually in the market) are printing using a color-change ink or liquid-crystal ink, for example, and a covert region 5 formed by for example optical retro-reflective printing (which cannot be recognized without using a special tool) are provided on the surface of the same recording medium. The overt region 3 and the covert region 4 may be arranged at different locations or may overlap, or may be positionally aligned. The overt letter/design pattern and the covert letter/design pattern may be the same or different.

Abstract: An object is to provide a recorded article or sticker whereby counterfeited articles and genuine articles can be visually distinguished in simple fashion in the market and wherein it is not possible to identify in the market the location and type of the anti-counterfeiting measures that have been taken. Both an overt region 3 (which can be recognized visually in the market) are printing using a color-change ink or liquid-crystal ink, for example, and a covert region 5 formed by for example optical retro-reflective printing (which cannot be recognized without using a special tool) are provided on the surface of the same recording medium. The overt region 3 and the covert region 4 may be arranged at different locations or may overlap, or may be positionally aligned. The overt letter/design pattern and the covert letter/design pattern may be the same or different.

Abstract: An object is to provide a recorded article or sticker whereby counterfeited articles and genuine articles can be visually distinguished in simple fashion in the market and wherein it is not possible to identify in the market the location and type of the anti-counterfeiting measures that have been taken. Both an overt region 3 (which can be recognized visually in the market) are printing using a color-change ink or liquid-crystal ink, for example, and a covert region 5 formed by for example optical retro-reflective printing (which cannot be recognized without using a special tool) are provided on the surface of the same recording medium. The overt region 3 and the covert region 4 may be arranged at different locations or may overlap, or may be positionally aligned. The overt letter/design pattern and the covert letter/design pattern may be the same or different.

Abstract: An object is to provide a recorded article or sticker whereby counterfeited articles and genuine articles can be visually distinguished in simple fashion in the market and wherein it is not possible to identify in the market the location and type of the anti-counterfeiting measures that have been taken. Both an overt region 3 (which can be recognized visually in the market) are printing using a color-change ink or liquid-crystal ink, for example, and a covert region 5 formed by for example optical retro-reflective printing (which cannot be recognized without using a special tool) are provided on the surface of the same recording medium. The overt region 3 and the covert region 4 may be arranged at different locations or may overlap, or may be positionally aligned. The overt letter/design pattern and the covert letter/design pattern may be the same or different.

Abstract: A container is provided with a liquid container for containing a liquid and a liquid supply for discharging the liquid of the liquid container. An electronic component is allowed to store data concerning the liquid contained and exchange data with an external device. A takeout step is to take the electronic component out of the liquid cartridge spent. A screening step is to screen out a reusable electronic component out of the electronic components removed. An attaching step is to attach the electronic component screened, in a new container for the liquid cartridge. A write step is to cause the electronic component to store new information.

Abstract: An object is to provide a recorded article or sticker whereby counterfeited articles and genuine articles can be visually distinguished in simple fashion in the market and wherein it is not possible to identify in the market the location and type of the anti-counterfeiting measures that have been taken. Both an overt region 3 (which can be recognized visually in the market) are printing using a color-change ink or liquid-crystal ink, for example, and a covert region 5 formed by for example optical retro-reflective printing (which cannot be recognized without using a special tool) are provided on the surface of the same recording medium. The overt region 3 and the covert region 4 may be arranged at different locations or may overlap, or may be positionally aligned. The overt letter/design pattern and the covert letter/design pattern may be the same or different.

Abstract: An inkjet recording sheet whose discoloration, which is caused with the passage of time, is prevented, the inkjet recording sheet comprising a substrate and an ink receptor layer formed on the substrate, the ink receptor layer containing a polymer obtained from a monomer component containing at least vinyl-polymerizable monomer containing a basic nitrogen atom, the ink receptor layer containing a polymerization inhibitor in an amount of 10 to 500 ppm.

Abstract: Disclosed are an ink composition which can satisfy, on a high level, various property requirements for ink compositions for use in ink jet recording (e.g., excellent ejection stability and realization of images free from feathering or color-to-color bleeding) and can realize good images by sublimation transfer. A sublimation transfer ink jet recording method using the ink composition is also disclosed. The ink composition comprises a heat transferable dye, a glycol ether, an acetylene glycol surfactant, and water. This ink composition is printed by ink jet recording onto an intermediate transfer medium to form a latent image on the intermediate transfer medium, and the intermediate transfer medium is then put on the surface of a receptor object, followed by heating of the intermediate transfer medium at a sufficient temperature and for a sufficient time to sublimate the heat transferable dye and to deposit the sublimated dye onto the surface of the receptor object.

Abstract: A cleaning sheet comprises a sheet-shaped base and an adhesive layer formed on at least one surface of the sheet-shaped base member. The adhesive layer has an adhesive strength in the range of 0.1-0.5 gf according to a 180-degree peel-off method provided by JIS Z-0237. Or the adhesive layer has a tackiness degree in the range of 1-5 according to a J DOW method provided by JIS Z-0237.

Abstract: Pigment dispersed aqueous ink jet ink compositions suitable for printing on plain paper. The ink comprises water as the principal solvent, a pigment and a pigment dispersant. The pigment dispersant is a derivative of a polyuronic acid in which a hydrophobic polymer is covalently attached to the reducing terminus of the polyuronic acid. The polyuronic acid is composed primarily of 1,4-linked polygalacturonic acid, polyguluronic acid, polyiduronic acid, or mixed polymers thereof.

Abstract: A recording medium and a recording method are provided which can realize an image having excellent storage stability. An ink composition comprising a colorant of at least one dye selected from the group consisting of a stilbene azo dye, a triphenylmethane dye, and a xanthene dye is used, and the recording medium having a recording layer comprising silica and a binder, wherein the binder comprises a polymer component, 5 to 55% by weight of a polymer component of the binder is a styrene/butadiene latex, and 20 to 45% by weight of the styrene/butadiene latex is derived from a butadiene monomer.

Abstract: An ink jet recording method which can realize a sharp image and ink dots having excellent circularity is disclosed. The ink jet recording method comprises the step of ejecting ink droplets of an ink composition onto a recording medium to form an ink image on the recording medium, the ink composition having a contact angle with a sized recording paper of 0.degree., as measured one sec after the initiation of contact of the ink composition with the sized recording paper, and containing not less than 60% by weight of water, the recording medium having an ink-repellent layer comprising a water-soluble silicone compound and/or a water-soluble fluorine compound.

Abstract: An ink container contains main tanks into which ink can be poured from the outside and the ink in the main tanks is supplied to recording heads via deaerators incorporating hollow fibers to which negative pressure is applied from the outside. The ink in the ink tanks is deaerated by the deaerators before an ink-end condition is brought on and then supplied to the recording heads.

Abstract: A cleaning sheet comprises a sheet-shaped base and an adhesive layer formed on at least one surface of the sheet-shaped base member. The adhesive layer has an adhesive strength in the range of 0.1-0.5 gf 125 mm according to a 180-degree peel-off method provided by JIS Z-0237. Or the adhesive layer has a tackiness degree in the range of 1-5 according to a J DOW method provided by JIS Z-0237.

Abstract: A yellow ink composition and a magenta ink composition are provided which have good properties satisfying requirements for a color ink jet recording ink, particularly a requirement that the color ink composition is less likely to cause clogging of nozzles, and can realize a printed image having excellent tone, waterfastness, storage stability, and lightfastness. Further, a color ink set comprising the above ink compositions in combination with a particular cyan ink composition and a particular black ink composition are also provided. A yellow ink composition comprising a dye represented by the following formula (XI) in combination with a dye represented by the following formula (XII) is a fundamental color ink composition: ##STR1## wherein R.sup.101 and R.sup.102 represent phenyl or naphthyl substituted by a hydroxyl group, --SO.sub.3 M, or --COOM.

Abstract: An ink jet recording medium is disclosed, comprising a base having provided on one side thereof a recording layer having an ink receiving layer whose surface is smoother than plain paper's and on the other side thereof a coating layer comprising an aqueous binder containing 10 to 40% by weight of a higher fatty acid salt to a coating weight of 0.1 to 0.3 g/m.sup.2. An ink jet recording medium is also disclosed, comprising a base having provided on only one side thereof a recording layer, said recording layer having a coefficient of dynamic friction of 0.65 to 0.75 in mutual friction, the back surface of said base having a coefficient of dynamic friction of 0.15 to 0.25 in mutual friction, and the coefficient of static friction between said recording layer and said back surface is 0.55 to 0.65. The ink jet recording medium is prevented from being double-fed and can be transferred at improved precision, thereby providing high quality images.

Abstract: An ink jet recording method which can simply realize a plurality of resolutions in a single printer without varying the amount of ink per droplet is disclosed. An ink jet recording method comprises the steps of: selecting a recording medium; changing an image resolution depending on the selected recording medium; and ejecting ink droplets onto the recording medium to form ink dots thereon, wherein the amount of ink of the droplet is constant when the resolution is changed, and wherein the image resolution is changed so that ink penetrability or ink repellency of the recording medium makes the diameters of the ink dots on the recording medium fall in the range of from 100 to 160% of diagonal dot pitch of the resolution.

Abstract: A disazo dye composition comprising at least a disazo dye represented by the formula (I) and a disazo dye represented by the formula (II): ##STR1## (wherein X and Y indicate an alkoxy group having 1 to 4 carbon atoms, and M indicates hydrogen or a cation selected from the group consisting of, alkaline metal, NH.sub.4, alkyl-substituted ammonium, alkanolammonium, morpholinium and piperidinium), wherein, when the disazo dye composition is analyzed by liquid chromatography, the area ratio of the peak area (Sp) of the disazo dye represented by the formula (I) to the peak area (Sc) of the disazo dye represented by the formula (II), that is Sp:Sc is from 1:0.4 to 1:2.4. This disazo dye composition provides a high quality image, rapid ink fixing and the like even on the plain paper.

Abstract: An ink jet recording method includes the steps of: (a) holding a sheet-like recording medium having a glossy surface in which the 60-degree mirror glossiness defined in JIS Z8741 is 60% or more between a driving roller disposed on a back surface side of the sheet-like recording medium and a notched roller having a thickness in a range of 0.05 to 0.5 mm, and pressing the glossy surface with a pressing force in a range of 5 to 30 g against the driving roller; (b) carrying the sheet-like recording medium; and (c) ejecting ink onto the glossy surface so that an image is recorded by dots of the ink on the glossy surface.

Abstract: An ink composition capable of offering a combination of a high-quality image with a waterfast image is provided. More specifically, an ink composition is provided which, by virtue of a combination of particular dyes, can faithfully reproduce black color, realize a high-quality image (a sharp image having a high optical density and free from bleed) also on plain paper and, at the same time, offer rapid ink fixation and waterfastness and lightfastness of the printed image. Dyes represented by the following formula (I) are used as a fundamental dye and further combined with a plurality of dyes to constitute the ink composition: ##STR1## wherein R.sup.1 represents --PO(OM).sub.2 or --COOM, X and Y each independently represent an alkoxy and M represents a cation of a group selected from the group consisting of a hydrogen atom, an alkali metal, ammonia, and an organic amine.