Abstract: A reservoir type writing pen having a micro-porous straight-liquid structure comprises a writing pen core (9); wherein the micro-porous straight-liquid structure includes an air pressure balance plug (3), a liquid storage pipe (11) configured for storing liquid ink, and a liquid guiding device configured for leading the liquid ink in the liquid storage pipe (11) into the writing pen core (9). The present application adopts the gap between the relaying pen core and the writing pen core, the ventilating core and the nano breathing plate to realize keeping the inner air pressure of the liquid storage space and the outside atmosphere pressure consistent. The writing pen of the present application has a simple structure, and the producing processes of the ventilating core have been matured, which can reduce the producing cost greatly.

Abstract: Disclosed herein is a refillable toothbrush with a refillable toothpaste chamber also adapted to contain a toothpaste cartridge. Thus the toothpaste chamber can be filled directly by toothpaste from different types of toothpaste tubes, or the consumer can use a toothpaste cartridge. An essential distinctive feature of the present invention is realization of two functions by means of the protective cap: its direct function—protecting the bristles in stowed position, and an additional function, namely—feeding toothpaste to the bristle section. The toothbrush is made of a small number of simple parts, is easy to manufacture, has the opportunity to be simply assembled-disassembled, and is easily cleaned. To facilitate cleaning of the toothbrush head conduit from the remnants of toothpaste before the next recharge of the toothbrush, it can be complete with a special removable rod having an ability to be let-in the conduit.

Abstract: A water-based ballpoint pen including a specific aqueous ink, a ball, a ballpoint pen tip that holds the ball at a front end of the ballpoint pen tip, an ink follower following the ink with consumption of the ink, and an ink container directly containing the ink and the ink follower. The ink container communicates with a rear portion of the tip. The ink follower includes at least a base oil and a thickener. The ball point pen tip discharges the ink from the top end portion. The ink container supplies the ink to the tip.

Abstract: A water-based ballpoint pen including a specific aqueous ink, a ball, a ballpoint pen tip that holds the ball at a front end of the ballpoint pen tip, an ink follower following the ink with consumption of the ink, and an ink container directly containing the ink and the ink follower. The ink container communicates with a rear portion of the tip. The ink follower includes at least a base oil and a thickener. The ball point pen tip discharges the ink from the top end portion. The ink container supplies the ink to the tip.

Abstract: The ink backflow preventive of the present invention contains at least refractory and/or involatile organic liquid substances and gelling agents, wherein the oil separation degree under the specific condition is prepared to be 1 to 15 %, in which as at least said gelling agents, styrene-based thermoplastic elastomer is contained and said styrene-based thermoplastic elastomer is composed of two or more of said styrene-based thermoplastic elastomer with the same molecular weight and with the different average molecular weight.

Abstract: An oil-based ink composition for writing instruments is provided that is capable of improving storage stability of an ink, while maintaining a leveling property even when a soluble gelling agent is used. The oil-based ink composition for writing instruments comprises a colorant, a resin, an organic solvent and a gelling agent, wherein said organic solvent(s) is (are) hydrocarbons solvent(s), and in particular, at least one species of the solvent selected from the group of aliphatic hydrocarbons solvent(s), alicyclic hydrocarbons solvent(s), aromatic hydrocarbons solvent(s), and halogenetad hydrocarbons solvent(s), said gelling agent(s) comprises (comprise) soluble gelling agent(s) soluble to the above organic solvent(s) and insoluble gelling agent(s) insoluble to the above organic solvent(s), and the above insoluble gelling agent(s) is (are) urea-modified thixotropic agent(s).

Abstract: A coating tool that includes an ink containment tube, an oily ink and a backflow inhibiting material. The ink is in contact with the inhibiting material. The ink containment tube has a boundary which is in contact with the oily ink and the backflow inhibiting material. The boundary contains polyvinyl alcohol and fluorine-based surfactants, the oily ink contains a colorant, a resin, an organic solvent, and a gelling agent, and the backflow inhibiting material consists of base material components and a gelling agent which contains polyacrylic acid, the polyacrylic acid being present in an amount of 0.1 to 3 wt % with respect to the total amount of said backflow inhibiting material.

Abstract: A color-memorizing photochromic writing instrument, which comprises a writing tip portion connected to a light-shielding tubular member or refill; and a color-memorizing photochromic ink, wherein the ink is prepared by dissolving, dispersing or suspending a diarylethene photochromic compound in a vehicle containing at least a solvent and a binder, wherein the diarylethene photochromic compound is in a coloring state, and a color-memorizing photochromic writing instrument set comprising the writing instrument and a color-changing means.

Abstract: A ballpoint pen including: an ink accommodation cylinder; a ballpoint pen tip in which a ball is rotatably held, the pen tip being attached to a tip end of an ink-accommodation cylinder directly or through a tip holder; and ballpoint oil-based ink comprising at least a coloring agent, organic solvent, a lubricant comprising organic acid and phosphoric ester, and organic amine, the ink having ink viscosity at shearing speed 6.8 sec?1 of 500 to 6000 mPa·s (20° C.) and directly being accommodated in the ink-accommodation cylinder, wherein the ballpoint pen satisfies 2.5×10?3?Z?1.0×10?3 where ink amount per 1 mm2 is Z mg/mm2 which is calculated from Y=X×105×Z where writing width of the ballpoint pen is X mm and ink consumption per 100 m is Y mg.

Abstract: A follower for a nonaqueous ballpoint pen, comprising at least one poly-?-olefin which is a synthetic oil having a viscosity of 200 mPa·s or more at 40° C., wherein the total amount of poly-?-olefins is 80 mass % or more of all components, the viscosity at 40° C. is from 1,000 to 30,000 mPa·s, and the shear-thinning index at a shear rate of 1 to 10/s is 0.95 or more. A follower for a nonaqueous ballpoint pen can be used also for a nonaqueous ballpoint pen using a solvent having a high vapor pressure and causes no problem even when the follower is mounted in an ink reservoir tube with strong tube resistance having an inner diameter of 2.8 mm or less.

Abstract: An ink follower for a ballpoint pen using a water-based ink in which a value of the test for oil separation (60° C., 24 hours) according to JIS K 2220-5.7-1993 is 0.5 to 12% and which has a viscoelasticity predominant in an elastic response or a value of tan ? of 0.1 to 1.5 at a temperature of 25° C. and in the full frequency range of an angular frequency of 0.1 to 630 rad/sec, and it contains as a base oil, a non-water-soluble organic solvent having a viscosity of 5 Pas·sec or less at a temperature of 25° C. and a shearing speed of 1 to 400 sec?1. Polybutene, mineral oil and silicone oil can be used as the base oil.

Abstract: An ink follower which has stable followability regardless of a pen body specification, a flow rate for writing and a writing speed and does not cause back leaking of the ink originating in shortage in the ink follower in the middle of writing and scattering of the ink follower by impact applied to the pen body and which does not flow out from the ink reservoir in storing the pen body at a high temperature and provides a stable flow rate for writing. An ink follower is also provided which prevents the ink from volatilizing by shutting off the ink from the outside air (volatilization preventing property) and which prevents the ink from leaking in writing with the pen turned upward. The ink follower, for example, contains a non-volatile or slightly volatile organic solvent and a non-styrene base thermoplastic elastomer which is soluble or swollen in the organic solvent and showing viscoelasticity which is predominant in elastic response.

Abstract: In order to provide an ink reservoir for a writing instrument which has satisfactory permeation resistance and moisture-absorption resistance against permeation of a solvent and absorption of moisture and which is excellent in a storing property of the ink with the passage of time, an ink reservoir for a writing instrument in which an ink for a writing instrument is stored is constituted of at least one selected from the group consisting of a cyclic olefin resin, a fluorine base resin and a high molecular weight olefin resin or the ink reservoir for a writing instrument described above is constituted of a laminated structure which is formed by extrusion molding of two or more kinds of thermoplastic resins.

Abstract: An ink-storing member for a writing instrument which can inhibit deterioration in the ink caused by permeation of oxygen and nitrogen contained in air, inhibit leaking of the ink and generation of bubbles, enhance discharge stability of the ink, improve fragrance retention of a perfume-containing ink, prevent inferior writing brought about by reduction in an internal pressure of an ink-storing vessel in a pressure type writing instrument and prevent deterioration in the ink due to vaporization of moisture of a water-based ink and deterioration in the ink caused y moisture absorption in an oil-based ink. Such ink-storing member includes, for example, an ink-storing member for a writing instrument which is constituted of a multilayer structure having an organic high molecular compound layer constituted of an organic high molecular compound an inorganic compound layer constituted of an inorganic compound.

Abstract: An ink follower composition to be provided at the rear end of an ink held directly in an ink container of a writing instrument and capable of going forward with consumption of the ink. The composition comprises at least one selected from an ethylene-?-olefin co-oligomer, an ?-olefin oil, a purified mineral oil and a polybutene, and added thereto a specific fatty acid amide. This composition can simultaneously satisfy the two important performances conflicting with each other, the ink flow-back preventive performance and the ink follow-up performance.

Abstract: Ink and an ink follower are reserved in an ink tube. An elastic member urges a ball forward. When an outflow of ink is measured at intervals of a writing distance of 100 m, the value of outflow of ink per writing distance of 100 m until a measurement time just before outflow of 80% of the amount of charged ink from the start of writing is selected to be in a range between a value smaller by 20 mg than the outflow of ink in the writing distance range of from 0 m to 100 m and a value larger by 20 mg than the outflow of ink in the writing distance range of from 0 m to 100 m.

Abstract: An applicator has a tubular body containing a liquid to be dispensed. A non-return device is movably disposed in the tubular body rearwardly of and in contact with the liquid for preventing backflow of the liquid. A manually-displaceable piston member is displaceable in the tubular body in a forward direction for pressurizing air admitted into a chamber located in front of the piston member, and a normally closed valve communicates with the chamber and is openable by the force of the pressurized air to apply the pressurized air to the non-return device to urge the non-return device forwardly to thereby pressurize the liquid. A resilient member normally urges the piston member rearwardly to a rear stop position. An air passage communicates the chamber with the exterior of the applicator when the piston member is in the rear stop position, and the air passage is blocked by the piston member during displacement of the piston member in the forward direction.

Abstract: A writing instrument has an ink containment tube and a pen tip equipped at one end of the ink containment tube with an oily ink contained in the ink containment tube. The oily ink shows pseudo-plasticity fluidity and comprises a colorant, a resin, an organic solvent and a gelling agent.

Abstract: An ink follower composition for oil-based ballpoint pens, comprising at least one organic solvent selected from the group consisting of a sparingly volatile organic solvent and a non-volatile organic solvent, a gelling agent comprising inorganic fine particles, and from 10 to 60% by weight of a resin soluble in the organic solvent used.

Abstract: The present invention relates to an ink follower for a water-base ballpoint pen, which has strong pseudoplasticity by causing HO(C2H4O)m.(C3H6O)nH to interfere with hydrophobic silica which is likely to disperse stably in silicone oil. Moreover, this ink follower for a water-base ballpoint pen keeps its stable performance of little long-term change of its viscosity. In order to improve long-term stability of the water-base ballpoint pen using this ink follower, the ink follower is made to comprise silicone oil, hydrophobic silica and HO(C2H4O)m.(C3H6O)nH (in which each of m and n shows 0 or a positive integer, provided that m+n is not equal to 0).

Abstract: A non-erasable liquid ink for a marking instrument including a colorant and a solvent and having a water content of about 0-15% by weight and a viscosity of about 15 to 4,500 cps. Also disclosed is a marking instrument filled with an ink of such a viscosity or lower in its reservoir.

Abstract: An applicator includes a reservoir charged with fluid. The reservoir has a discharge-controlling mechanism at one end for applying the fluid. The fluid contains at least one organic solvent, such as mythylcyclohexane, and is charged with a scarcely volatile liquid substance, such as an alkylene oxide adduct of diglycerin, having no compatibility with the applying fluid. The scarcely volatile liquid substance forms a movable plug for an end part of the applying fluid in a contact state and the rear of the plug in the reservoir is released to the atmosphere. The applicator can include writing instruments including a felt tip pen and a ballpoint pen, a corrector, an applicator for adhesive and a dressing instrument.

Abstract: An ink follower for a writing tool arranged in close contact with an ink surface of a terminal portion of an ink reservoir opposite to a writing tip portion comprises a swollen gel formed from an oil-absorbable resin, a base oil of polybutene, and an alkyl-modified silicone oil compatible with the polybutene. The ink follower exhibits improved impact resistance without causing insufficient ink following and oil separation.

Abstract: An ink follower composition for oil-based ballpoint pens, comprising at least one organic solvent selected from the group consisting of a sparingly volatile organic solvent and a non-volatile organic solvent, a gelling agent comprising inorganic fine particles, and from 10 to 60% by weight of a resin soluble in the organic solvent used.

Abstract: An ink follower for a writing tool comprises a swollen gel formed from an oil-absorbable resin and a base oil, i.e., a hardly volatile liquid and/or a nonvolatile liquid. The ink follower is arranged in contact with the ink surface of a writing tool such as a pen. A writing tool using the ink follower has excellent impact resistance without causing insufficient following and oil separation with the passage of time and with no occurrence of inconvenience in writing.

Abstract: A suspension of a pigment in a grease is used as a ballpoint penink.

Abstract: A follower piston for a ball-point pen, the piston including an element in the form of a stable gel whose hardness measured by cone penetration lies in the range 100×10−1 mm to 400×10−1 mm, and a method for manufacturing the element in situ.

Abstract: An oily ink for writing instruments comprising e. colorant, f. resin, g. an organic solvent and h. a gelling agent, wherein the said gelling agent comprises a soluble gelling agent with the solubility of from about 0.1 to about 20% by weight at a temperature of 20° C. to the said organic solvent, and the viscosity of the ink is not less than 700 mPa·s when the rate of shear is 0.1 (1/s) and not greater than 500 mPa·s when the rate of shear is 100 (1/s).

Abstract: A ballpoint pen refill has an ink-accommodating tube (1) containing an ink (6) having a thixotropic property and a greaselike ink follower (7) capable of moving together with the ink (6) as the ink (6) is consumed so as to be contiguous with the rear end of the ink (6) to prevent the reverse flow of the ink (6). The ink-accommodating tube (1) has a small diameter portion (3) formed at a front side and a large diameter portion (2) having a diameter greater than the diameter of the small diameter portion (3) and extending rearward from the small diameter portion (3). A ballpoint pen tip (5) rotatably holding a ball (4) is inserted in the small diameter portion (3) of the ink-accommodating tube (1). A regulating member (15) has a column (15a) which is press-fitted in the small diameter portion (3). The column (15a) of the regulating member (15) has an inclined end surface (14) at its front end inclined at a predetermined angle to a plane perpendicular to the axis (O) of the ink-accommodating tube (1).

Abstract: An ink pen refill consists of a single writing point connected to an elongated barrel in which gel ink is stored in distinctly colored layers. At the proximal end of the barrel, just behind the most proximal color band of ink, a quantity of grease is inserted in the barrel to seal the ink within the barrel. In manufacturing the ink pen refill, after installing the elongated barrel on the proximal end of the writing point, a quantity of gel ink of a first particular color is inserted within the barrel just proximal of the writing point using a filling pipe. When the desired quantity of ink has been so inserted, the elongated barrel with the writing point is placed in a centrifuge and is centrifuged to remove any air bubbles contained within the ink. Next, the next color of gel ink is dispensed into the barrel just proximal of the first layer of ink. The entire refill is again centrifuged to remove any bubbles from the newest layer of ink.

Abstract: Lot-to-lot or time-dependent instability in quality of the known ink follower for water-base ballpoint pens is overcome. Particulate silica, or organic-treated clay is kneaded as thickener with base oil to prepare gel matter. The gel matter is pressurized to eliminate fine bubbles to yield ink follower for water-base ballpoint pens. The pressurization is preferably performed at 2 atm or higher. The elimination of the bubbles is more effective when the ink follower is, under pressurization, stirred and/or heated.

Abstract: A writing implement comprising a dispensing device for writing liquid at the front end of the implement and a liquid reservoir for holding the writing liquid which is at least partly transparent at the rear end of the instrument, the improvement comprising the liquid reservoir is coated on the inside surface, at least in part, with a silicone rubber layer which allows the writing liquid to run off the inside surface.

Abstract: An ink follower composition for ballpoint pens which comprises (1) a hardly volatile liquid and (2) expansible synthetic mica having a quaternary ammonium ion introduced therein or an ink follower composition for ballpoint pens which comprises (1) a hardly volatile liquid, (3) synthetic mica, and (4) a thickener, and a ballpoint pen having the ink follower composition. The ink follower composition follows ink without leaving ink behind on the inner wall of an ink container.

Abstract: The present invention provides an ink follower for an aqueous ballpoint pen having an ink reservoir for directly preserving an ink, and this ink follower comprises at least a gel-like material having a predominantly viscous response and comprising a less volatile solvent having a viscosity of 5 Pa.multidot.sec or less and a hydrophobic thickening agent, and a solid piece having a specific gravity of 0.80 to 1.10. In addition, the present invention provides a ballpoint pen using this ink follower.The ink follower of the present invention is characterized by using the gel-like material having a high flowability and the solid piece for dispersing and absorbing impact. This ink follower has a strong drop impact resistance, in contrast to a conventional gel-like ink control plug. The aqueous ballpoint pen using this ink follower does not lose its function, even when it is dropped from a shelf at a height of 1.5 m.

Abstract: A marking instrument includes a non-erasable ink including a colorant and a solvent having a water content of about 0-15% by weight and a viscosity of about 15 to 4,500 cps.

Abstract: An ink follower composition for ballpoint pens which comprises a hardly volatile liquid and aluminum silicate added therein. The ink follower composition for ballpoint pens of the present invention has very little temperature dependence of viscosity, undergoes no liquid separation due to changes in temperature, etc. and therefore follows ink while retaining the interface with the ink and preventing the ink from adhering to the inner wall of the ink tube until the ink runs out.

Abstract: The multiplex writing implement includes: a cylindrical portion formed in the rear of the elliptical cylinder portion of the middle barrel; a rotary shaft which is disposed in the bore of the cylindrical portion so as to rotate in a range of about 180.degree.

Abstract: Ink follower compositions include a non-polar liquid, a thickener and a polar additive. The polar additive is preferably selected from the group consisting of non-ionic surfactants, e.g., ethoxylated nonylphenols, and low molecular weight alcohols.

Abstract: A writing instrument is provided, including a writing tip, a reservoir containing a liquid ink, and a capillary transfer rod extending from a first end to a second end of the reservoir. The capillary transfer rod transfers the liquid ink from the reservoir to the writing tip. A capillary element having an orifice is slidably mounted around the capillary transfer rod so as to move freely in the reservoir. An outside edge of the capillary element comes into the immediate vicinity of an inside wall of the reservoir in such a manner that the capillary element comes substantially flush with an inside wall of the reservoir as it slides along the transfer rod.

Abstract: A ballpoint pen for use with ink having thixotropic (shear viscosity decreasing properties) and a joint for regulating the flow of the ink to the pen's tip through an entrance in the tip. The joint includes a valve chamber which is disposed in an approximately middle portion of the joint with respect to the axial direction thereof for holding a ball therein with play and has a ball seat in the rear part thereof, a cavity in front of the valve chamber and a conduit communicating with an ink reservoir.

Abstract: A writing instrument with ink quantity or level detecting function which has an ink tube containing ink, and a float so arranged in intimate contact with the rear end surface of the ink in the ink tube as to be driven in contact with the rear end surface of the ink upon decrease of the ink in the ink tube. Further, a magnetic sensor is further provided externally at the writing instrument, while the float is formed of magnetic material. Thus, lack of the ink in the ink tube of this writing instrument can be readily detected.

Abstract: Novel improved aqueous based, water-fast, shock resistant, shear-thinning ink compositions and ball-point pens including the ink compositions. The ink compositions comprise a substantially uniform dispersion of colorant(s), a water dispersible, polymeric shear-thinning material and a substantially water soluble polymeric binder material in a highly polar solvent system. On drying, the ink compositions provide a coalesced residue of binder and colorant(s) which is water-fast.

Abstract: Gelled, aqueous inks are used in conjunction with viscoelastic ink follower compositions to avoid the necessity of using a fibrous ink reservoir or a porous or extruded ink feed rod.

Abstract: A make-up brush comprises a tapered hollow body made of a porous material restorable in shape when deformed, having a surface for oozing a make-up liquid, a make-up liquid guiding core covered by the hollow body and tightly inserted through a head seat fixed to one end of a liquid cylinder, a head cylinder through which the tapered hollow body extends, the head cylinder being secured to one end of a shaft cylinder to fix the tapered hollow body thereat, and a viscous substance filled in the liquid cylinder after the make-up liquid is filled in the liquid cylinder on a side of the head seat, thereby causing the make-up liquid to smoothly flow out of the make-up brush.