摘要:
A retractable fountain pen employs a cover plate (16) rotatable about a supporting tube (12) by means of a spring (17) to sealingly contact the tapered front end of a cylindrical head portion (4) to close off a central passageway therein. The tube prevents excess deformation of the resilient tapered front end portion.
摘要:
A magnetic display unit in which a magnetic panel (1) encloses a colored liquid in which magnetic particles are dispersed. A recording head (31) moves over the panel (1) and has a plurality of electromagnets arranged with at least three electromagnets on each of parallel lines inclined to the direction of movement of the recording heads (31) with all the electromagnets being arranged on equal pitch perpendicular to this movement direction. The electromagnets are selectively actuated as the recording head (31) moves to write a dot pattern.
摘要:
Ink is supplied to the nib (2) of the pen under the control of a motor-actuated ink delivery device (9). An ink holder (1 a) is formed covering a slit region (4) of the nib (2) to form an ink pool (1) between the ink holder and the nib. A detector (6) is provided for detecting the quantity of ink in the ink pool (1) at any time. A pen holder (5) supports the nib (2), and includes an ink reservoir (8) opening into the ink pool (1). The ink delivery device (9) is coupled to the ink reservoir (8) for delivering ink to the ink pool (1) under pressure. An electrical power source (15) and a power delivery circuit are provided for controlling the flow of current to an operating motor (10).
摘要:
A photosensitive composition is described, comprising an electron donative chromatic organic compound, and a photoactivator selected from the group consisting of an aromatic halonium salt, an aromatic onium salt of elements belonging to Group Via in the periodic table and aromatic onium salt of elements belonging to Group Va in the periodic table, preferably further comprising at least one of a compound having oxyethylene groups and/or basic fine powder, and a compound having alcoholic hydroxy groups. The photosensitive compositions have abundant kinds of color productions, and are superior in heat-proof, humidity-proof, and preservation properties.
摘要:
This invention provides a stencil from which a patternwise perforated stencil can be easily made by handwriting, a stencil material set with which a patternwise perforated stencil can be made, and a stencil duplicator set which, in combination with the stencil, performs simple, clear printing. The stencil is made up of a porous support 2 and a masking film formed thereon, said masking film being made of a water-insoluble polymer having tertiary amino groups. The stencil material set contains the stencil (2) and a patternwise perforated stencil-making solution which forms a water soluble product upon reaction with said polymer. Stencil printing is performed using the patternwise perforated stencil, a stencil duplicator (1) and printing ink (4).
摘要:
@ An erasable ball-point pen ink is disclosed. The ink is comprised of a rubber component, a volatile solvent, a pigment and a nonvolatile solvent, which additionally contains finely divided powders of an inorganic compound which is inactive to other ink components contained therein; a semisolid substance; a soft solid substance having a melting point of not more than 130 °C; a combination of finely divided powders of an inorganic compound inactive to other ink compositions contained therein and a semisolid substance; or a combination of finely divided powders of an inorganic compound inactive to other ink composition contained therein and a soft solid substance having a melting point not higher than 130°C. The ink can be used in a ballpoint pen to make it possible to write fine letters and is capable of maintaining highly stable ink traces over long distances compared with presently available ball-point pen inks. The traces produced are even and show good intensity. Further, the ink does not produce substantial wear of ball holder with respect to the pen components. In addition to the excellent writing performances of the disclosed ink it retains the same or better erasability than erasable inks presently available in the market.
摘要:
This invention provides a stencil from which a patternwise perforated stencil can be easily made by handwriting, a stencil material set with which a patternwise perforated stencil can be made, and a stencil duplicator set which, in combination with the stencil, performs simple, clear printing. The stencil is made up of a porous support 2 and a masking film formed thereon, said masking film being made of a water-insoluble polymer having tertiary amino groups. The stencil material set contains the stencil (2) and a patternwise perforated stencil-making solution which forms a water soluble product upon reaction with said polymer. Stencil printing is performed using the patternwise perforated stencil, a stencil duplicator (1) and printing ink (4).