摘要:
A gas-pressurized writing instrument simply constructed so that a compressed gas will not escape to the outside by providing a writing point assembly (10) at the front end (14a) of a tube member (14), storing an ink (12) to be fed to the writing point assembly (10) in the tube member (14), encasing at least part of the tube member (10) by a casing cylinder (18) so as to form a space (16) communicating with the rear opening of tube member (14), and sealing a compressed gas inside the space (16) so that the compressed gas will push the ink out to writing point assembly (10) to secure the writing performance, wherein the casing cylinder (18) is formed of a material that presents low gas permeability or gas impermeability.
摘要:
A collector type writing instrument which is formed with a sectioning portion for substantially separating its ink tank and a snorkel having a tubular vent portion for establishing air communication between the front and rear spaces divided by the sectioning portion, wherein at least one ink conduit of a size smaller than that of the vent portion is formed in the sectioning portion. Further, a clearance portion allowing for ink and air bubbles to move therethrough is provided between the collector and snorkel. In addition, the parts present from the sectioning portion to the rear end of the collector are laid out so that ink will be able to spread and wet the surfaces of the parts other than the ink tank. It is also preferable that the end of the tubular vent portion of the snorkel is cut so as to enlarge the opening. The writing instrument is configured so as to satisfy the relations Ts>Is and Tt>It, where ‘Ts’ is the total minimum cross-section of the vent portion, ‘Tt’ is the total distance of the vent portion, ‘Is’ is the total minimum cross-section of the ink conduit and ‘It’ is the total distance of the ink conduit.
摘要:
A collector type writing instrument including: a collector for temporarily storing ink therein upon a change in inter pressure, a sectioning portion for substantially separating its ink tank for storing ink, and a snorkel having a vent portion for establishing air communication between the front and rear spaces divided by the sectioning portion or an ink absorber for reducing the inner tank volume, wherein the snorkel or the cladding of the ink absorber is molded of the same material as the collector or the ink tank is or is subjected to the same wettability reforming treatment as the collector or the ink tank is.
摘要:
An image recording apparatus includes a heating portion and a granulating portion to generate colorant particles, a charging portion to charge the generated colorant particles, an ejecting portion to intermittently eject the charged colorant particles onto a recording medium in response to an electrical signal corresponding to image data to be recorded, and a transport portion to sequentially transport the colorant particles through these portions. The heating portion heats and evaporates solid or liquid colorant. The evaporated colorant is transported to the granulating portion, cooled, solidified and agglomerated into colorant particles. The colorant particles are transported to the succeeding charging portion, charged there and transported to the ejecting portion. The charged colorant particles are electrically induced toward a recording medium through an ejection hole and ejected onto a recording medium, so that the colorant particles stick and permeates to the medium according to image data.
摘要:
A ball-point pen is so configured that an elastic body is installed in a state that it cannot be pulled out such that it can push a ball at the point at all times directly or indirectly via a movable member, satisfying a relation 20·W
摘要:
A direct-feed type writing implement includes: a point assembly having a writing point at the tip thereof; an ink tank directly storing a relatively low viscosity ink having a viscosity of 2 to 100 mPa·S at room temperature; an ink collector for adjusting the internal pressure in the ink tank by utilizing capillarity; a feeder including a center core, for feeding ink from the ink tank to the writing point; a duct pipe connecting the ink collector and the ink tank; and a duct pipe ink storage portion provided for the duct pipe. In another embodiment, ink is supplied to the center core as the ink feeder only through the duct pipe.
摘要:
This invention provides a ball-point pen suited to low-viscosity aqueous ink. This ball-point pen includes a ball-point pen refill in which an ink reservoir communicates with a tip for holding a tip ball via a joint, wherein the ink reservoir is filled with water type ball-point pen ink containing at least one type of a solvent selected from the group consisting of ethyleneglycol, diethyleneglycol, propyleneglycol, and glycerin in an amount of 5 to 40 wt % of the total ink amount, a crosslinking acrylic acid polymer in an amount of 0.1 to 1.0 wt % of the total ink amount, a pigment in an amount of 5 to 10 wt % of the total ink amount, and the balance primarily consisting of water, and the tip has a spring which in a normal state urges and brings the tip ball into intimate contact with the inner edge of a ball holding portion at the front end of the tip and releases the intimate contact when writing is performed.