Abstract: A direct ink supply writing implement according to the present invention is provided with an ink reservoir made of a porous material disposed between a nib and an ink tank; a partition wall disposed between the ink reservoir and the ink tank and arranged to partition the ink reservoir and the ink tank from each other; a communication hole formed in the partition wall for establishing communication between the ink reservoir and the ink tank; a rod-shape ink guiding member which penetrates the partition wall and with which ink is supplied from the ink tank to the nib; and a compressed portion formed at a rear end of the ink reservoir and arranged to enhance capillary force as compared with other portions.

Abstract: The present invention provides an aqueous marking pen ink composition for writing board which gives writing that can be easily erased by wiping with a dry erasing material without staining on the surface of the writing board even if the writing is half-dried, not to mention after dried on the surface of the writing board. The novel aqueous marking pen ink composition for writing board comprising as essential components a colorant, a resin, a separating agent and water, wherein the colorant comprises microcapsules containing a coloring substance selected from the group consisting of oil-soluble dye, disperse dye and pigment and oil medium which dissolves or disperses a coloring substance. Writing drawn on the surface of a writing board with the aqueous marking pen ink for writing board according to the present invention can be easily and completely erased by wiping with a dry erasing material regardless of whether it is half-dried shortly after drawn on the writing board or after thoroughly dried.

Abstract: A method for energizing an energization-operated toy element in which an electric double layer capacitor is employed as energization means for energizing a toy element which is operated upon application of low voltage, the capacitor is charged upon reception of a current from a DC power source, and the charged electric power is used to energize a toy load as a discharge current to operate the toy element. An energization-operated toy which comprises an energization heating color changing element provided with an energization resistant heating member for generating heat upon application of the DC voltage and a thermal color changing layer disposed in contact with or close to the heating member, energization means consisting of an electric double layer capacitor for generating heat by supplying the discharge current to the energization resistant heating member, and a power source for supplying the DC voltage from 0.5 V to 9.0 V to the capacitor.

Abstract: A temperature-sensitive reversibly deformable laminate which is reversibly deformable towards both sides thereof with changes in temperature to take three states; an original state at room temperature, a contracted state at a low temperature, and an expanded state at a high temperature, wherein the laminate is composed of at least two resin layers having different coefficients of thermal expansion.

Abstract: A reversible thermochromic composition comprising as essential components (a) an electron-donating color-developing organic compound, (b) at least one electron-accepting compound selected from alkoxyphenol compounds represented by Formula I: ##STR1## wherein R represents an alkyl group; and (c) a compound serving as a reaction medium capable of reversibly causing electron-donating/accepting reaction attributable to the components (a) and (b). This composition has a reversible metachromatic function that it presents a color-developed state when heated in a color-extinguished state and presents the color-extinguished state when temperature-dropped or cooled in the color-developed state, or that it begins to develop a color in the course of temperature drop after heating, having been triggered by its temperature rise when heated in a color-extinguished state, and returns to the color-extinguished state after it has presented a color-developed state in a maximum developed-color density.

Abstract: A ballpoint pen tip including a metallic pipe having a plurality of inwardly projecting portions at a neighborhood of a front end portion of the pipe at regular intervals, and a front end edge portion at a front end of the pipe, and a ball rotatably held between the front end edge portion and the plurality of inwardly projecting portions, wherein the pipe satisfies a relation of A/T.ltoreq.5.8 where A is an outer diameter of the ball and T is a thickness 10 of the pipe, and also the relation of B/T.ltoreq.2.3 where B is a diameter of a virtual inscribing circle contacting a top of the plurality of inwardly projecting portions and T is the same as above.

Abstract: A ballpoint pen tip including a metallic pipe having a plurality of inwardly projecting portions at a neighborhood of a front end portion of the pipe at regular intervals, and a front end edge portion at a front end of the pipe, and a ball rotatably held between the front end edge portion and the plurality of inwardly projecting portions, wherein the pipe satisfies a relation of A/T.ltoreq.5.8 where A is an outer diameter of the ball and T is a thickness 10 of the pipe, and also the relation of B/T.ltoreq.2.3 where B is a diameter of a virtual inscribing circle contacting a top of the plurality of inwardly projecting portions and T is the same as above.

Abstract: A thermoplastic resin composition comprising a thermoplastic resin (A) and a thermoplastic polymer (B) having a glass transition temperature within the range of from -20.degree. C. to 70.degree. C. which are melt-blended in a proportion (A)/(B) of from 95/5 to 20/80 in weight ratio. The composition, upon application of an external stress in a temperature region of from a temperature about the glass transition temperature of the thermoplastic polymer (B) to the melting point thereof, is transformable to any shape that conforms to that stress, and is capable of becoming fixed to the transformed shape in a temperature region lower than the glass transition temperature.The composition can be used to provide a temperature-dependent shape-transformable/fixable product formed of the above composition.

Abstract: A microcapsulated pigment contains, as reaction media one or more specific aliphatic acid alcohol esters obtained from monohydric aliphatic alcohols having odd numbers of carbon atoms and aliphatic carboxylic acids, these reaction media in a homogeneous compatible state with chromatic components are occluded in microcapsules to obtain characteristics of thermochromism with a hysteresis range (segment HG) from 8.degree. C. to 30.degree. C.

Abstract: A reversible thermochromic composition is formed by blending: (a) an electron donating compound; (b) an electron accepting compound; (c) a metachromatic temperature adjuster; (d) an electron accepting, light-fastness providing agent represented by Formula I based on 1.0 part by weight of the component-(a) electron donating compound: ##STR1## wherein n represents an integer of 5 to 17; X and Y each represent C.sub.1-4 or halogen; and p and m each represent an integer of 0 to 3.

Abstract: A method of causing metachromatism by the use of a reversible thermochromic composition comprising (a) an electron donating compound, (b) an electron accepting compound and (c) a metachromatic temperature adjuster, wherein;(d) an electron accepting, light-fastness providing agent represented by Formula I: ##STR1## wherein n represents an integer of 5 to 17 to form a straight-chain or branched alkyl group; X and Y each represent a straight-chain or branched alkyl group having 1 to 4 carbon atoms, or a halogen atom; and p and m each represent an integer of 0 to 3;is brought into presence in an amount of 0.3 part by weight to 70 parts by weight based on 1.0 part by weight of the component-(a) electron donating compound.The light-fastness of the reversible thermochromic composition at the time of color development can be greatly improved.

Abstract: A footwear has a thermochromic coloring color-memory layer having a large hysteresis on a color-density-to-temperature curve so as to show interchangeability between a first color phase and a second color phase different from the first color phase, and a coloring tool for forming a desired image on the footwear.

Abstract: A shear-thinning water-based ball-point pen ink composition comprising from 1% by weight to 35% by weight of a colorant, from 2% by weight to 35% by weight of a water-soluble polar solvent, from 1% by weight to 30% by weight of a nonionic surface active agent having an HLB value within the range of from 8 to 12, and the balance being water and adjusting additives, and having a viscosity within the range of from 25 mPa.s to 160 mPa.s (a value at the number of revolution of 100 rpm in an EM type rotational viscometer, 25.degree. C.) and a shear thinning index within the range of from 0.1 to 0.6; the nonionic surface active agent having a mixed phase comprising a phase standing dispersed in the form of fine particles and a phase standing dissolved in a molecular state.

Abstract: A temperature-dependent color/transparency storing resin layer is composed by dispersing and fixing a mutually dissolved homogeneous composition consisting of (A) an electron-donating color-developing organic compound, (B) a compound having a phenolic hydroxyl radical, and (C) a compound selected from alcohols, esters, ketones and carboxylic acids, in vinyl chloride-vinyl acetate-copolymer matrix resin, as small particles, and capable of exhibiting reversible change in color and in transparency in response to a temperature variation with hysteresis, and selectively storing a state developed above the high trigger temperature and a state developed below the low trigger temperature in a temperature range between the high and low trigger temperatures, wherein the transparency is improved by blending vinyl chloride-vinyl acetate-vinyl alcohol copolymer and/or vinyl chloride-vinylidene chloride copolymer as an agent for improving the transparency in said matrix resin so as to regulate the transparency and to consp

Abstract: The present invention provides a thermally color-changeable toy constituted by a thermally color-changeable article, and a color-changing device in which the color-changeable article is stored in a air cooling chamber so that the color of the thermally color-changeable article is thermally changed by cool air. The color-changing device is constituted by a cooling source chamber for storing therein a plurality of piled up cool blocks, the air Cooling chamber communicating with the cooling source chamber so as to circulate air, and an air blower disposed in a communication path between the cooling source chamber and the air cooling chamber. Air flow gaps are formed among the cool blocks so as to improve the cooling efficiency.

Abstract: A coloring fluid-containing marking device which sufficiently withstand practical use and, after use, its molded members can be biologically degraded in soil. The marking device comprises a coloring fluid container molded from an aliphatic polyester resin, and a coloring fluid containing a solvent mainly comprising an aliphatic hydrocarbon and/or an alicyclic hydrocarbon.

Abstract: A thermochromic laminate is provided which comprises a thermochromic layer, and a coating layer or layers laminated thereon containing a light-intercepting pigment and a light stabilizer; the coating layer or layers containing the light-intercepting pigment and the light stabilizer dispersed and fixed in a first film-forming material, and the thermochromic layer constituted of a homogeneous solid composed of an electron-donating coloring organic compound, an electron-accepting compound, and an organic compound medium for adjusting color reaction temperature dispersed and fixed in a second film forming material; the light-intercepting pigment being one or more pigments selected from metallic luster pigments, transparent titanium dioxide, transparent iron oxide, transparent cesium oxide, and transparent zinc oxide; and the light stabilizer being one or more chemicals selected from ultraviolet absorbers, antioxidants, singlet oxygen quenchers, superoxide anion quenchers, ozone quenchers, visible light absorbers,