Abstract: An image forming apparatus includes: a drawer movable between an inner position and an outer position and supporting a first cartridge including a first photosensitive drum and a first discharge part and a second cartridge including a second photosensitive drum and a second discharge part; and a waste toner box including a first coupling part coupled with the first discharge part and a second coupling part coupled with the second discharge part, in a state where the first cartridge and the second cartridge are supported by the drawer at an inner position and the waste toner box is mounted to the apparatus main body, the waste toner box being movable between a first/second position where the first coupling part and the first discharge part are coupled/decoupled and the second coupling part and the second discharge part are coupled/decoupled.

Abstract: An image forming apparatus includes: a drawer movable between an inner position and an outer position and supporting a first cartridge including a first photosensitive drum and a first discharge part and a second cartridge including a second photosensitive drum and a second discharge part; and a waste toner box including a first coupling part coupled with the first discharge part and a second coupling part coupled with the second discharge part, in a state where the first cartridge and the second cartridge are supported by the drawer at an inner position and the waste toner box is mounted to the apparatus main body, the waste toner box being movable between a first/second position where the first coupling part and the first discharge part are coupled/decoupled and the second coupling part and the second discharge part are coupled/decoupled.

Abstract: An image forming apparatus includes: a drawer movable between an inner position and an outer position and supporting a first cartridge including a first photosensitive drum and a first discharge part and a second cartridge including a second photosensitive drum and a second discharge part; and a waste toner box including a first coupling part coupled with the first discharge part and a second coupling part coupled with the second discharge part, in a state where the first cartridge and the second cartridge are supported by the drawer at an inner position and the waste toner box is mounted to the apparatus main body, the waste toner box being movable between a first/second position where the first coupling part and the first discharge part are coupled/decoupled and the second coupling part and the second discharge part are coupled/decoupled.

Abstract: An image forming apparatus includes: a drawer movable between an inner position and an outer position and supporting a first cartridge including a first photosensitive drum and a first discharge part and a second cartridge including a second photosensitive drum and a second discharge part; and a waste toner box including a first coupling part coupled with the first discharge part and a second coupling part coupled with the second discharge part, in a state where the first cartridge and the second cartridge are supported by the drawer at an inner position and the waste toner box is mounted to the apparatus main body, the waste toner box being movable between a first/second position where the first coupling part and the first discharge part are coupled/decoupled and the second coupling part and the second discharge part are coupled/decoupled.

Abstract: An image forming apparatus includes: a drawer movable between an inner position and an outer position and supporting a first cartridge including a first photosensitive drum and a first discharge part and a second cartridge including a second photosensitive drum and a second discharge part; and a waste toner box including a first coupling part coupled with the first discharge part and a second coupling part coupled with the second discharge part, in a state where the first cartridge and the second cartridge are supported by the drawer at an inner position and the waste toner box is mounted to the apparatus main body, the waste toner box being movable between a first/second position where the first coupling part and the first discharge part are coupled/decoupled and the second coupling part and the second discharge part are coupled/decoupled.

Abstract: An image forming apparatus includes: a drawer movable between an inner position and an outer position and supporting a first cartridge including a first photosensitive drum and a first discharge part and a second cartridge including a second photosensitive drum and a second discharge part; and a waste toner box including a first coupling part coupled with the first discharge part and a second coupling part coupled with the second discharge part, in a state where the first cartridge and the second cartridge are supported by the drawer at an inner position and the waste toner box is mounted to the apparatus main body, the waste toner box being movable between a first/second position where the first coupling part and the first discharge part are coupled/decoupled and the second coupling part and the second discharge part are coupled/decoupled.

Abstract: An ink set for ink-jet recording of the present invention includes a black ink which has a surface tension of not less than 40 mN/m at 25° C., and a color ink which has a surface tension of not less than 40 mN/m at 25° C. The viscosity ratio of the color ink with respect to the black ink is not less than 1.3. The feathering of the ink is avoided, and the bleeding, which would otherwise appear at the boundary between the black ink and the color ink, is avoided.

Abstract: A water base ink for ink-jet recording comprises water, a coloring agent, a water-soluble organic solvent, and a benzotriazole-based metal-inactivating agent and alkanolamine. When the ink is used in an ink-jet recording apparatus which has the metal member containing nickel or nickel alloy in an ink supply passage, nickel is eluted from the metal member in an amount of not more than 50 ppm. The ink makes it possible to perform stable jetting operation for a long term without causing any deterioration of metal members of a discharge head due to the metallic corrosion and the elution of nickel into the ink.

Abstract: A method of manufacturing polymer particles for use in a toner capable of incorporating fine wax particle in a polymer resin particle also in a case of adopting a dispersion polymerization method used generally so far, thereby enabling to prevent offset in a heat fixing device provided to copying machines or printers thereby improving the fixing property of the toner and capable of forming images at fine fineness when the polymer resin particles are used as the toner. The fine wax particle is dispersed by using the polymeric dispersant into an organic solvent and one or more of monomers for forming the polymer is dissolved and the polymerizing reaction of the monomer is proceeded while depositing the fine polymer particles on the surface of the fine wax particle upon deposition of the polymer into the organic solvent in the initial stage of the polymerizing reaction of the monomer, thereby incorporating the fine wax particles into the formed polymer particle.

Abstract: An ink set for ink-jet recording includes a first ink which contains glycerol and a first coloring agent, and a second ink which contains a water-soluble organic solvent incompatible with glycerol and a second coloring agent and which does not contain glycerol. The first ink and the second ink are mixed with each other at a low speed. Therefore, the inks permeate into the paper before the inks are mixed with each other. Thus, it is possible to avoid the color bleeding.

Abstract: An ink set for ink-jet recording comprises a yellow ink, a magenta ink, and a cyan ink. Changes of colors &Dgr;EY, &Dgr;EM, &Dgr;EC of the yellow ink, the magenta ink, and the cyan ink satisfy the following relationship when the yellow ink, the magenta ink, and the cyan ink are deposited on regular paper, followed by being irradiated with light having a wavelength of 300 nm to 400 nm and an illuminance of 100 W/m2 for 30 hours by using a xenon lamp: |&Dgr;EY−&Dgr;EM|≦5, |&Dgr;EM−&Dgr;EC|≦5, |&Dgr;EC−&Dgr;EY|≦5. The ink set is excellent in color balance after the fading.

Abstract: An ink for ink-recording is provided, which makes it possible to reduce color bleed while suppressing even when recording is performed on regular paper. The ink for ink-jet recording contains water, a coloring agent, a water-soluble organic solvent, and a compound represented by the following general formula (1): wherein R represents a alkyl group having a number of carbons of 8 to 18, and x+y is not more than 10. A surface tension of the ink is controlled to 31 to 35 mN/m, which can reduce color bleed and feathering.

Abstract: An ink set for ink-jet recording is provided, in which the color bleed is reduced at adjoining portions of inks and the deposition of dye or the like in a color ink is not caused when a plurality of colors are recorded on regular paper. The ink set for ink-jet recording, which is composed of inks of a plurality of colors, includes at least one first ink and at least one second ink having the following compositions respectively. The first ink contains at least one anionicity-added pigment. The second ink contains at least one anionic dye and at least one ethanolamine hydrochloride selected from the group consisting of monoethanolamine hydrochloride, diethanolamine hydrochloride, triethanolamine hydrochloride, and thioethanolamine hydrochloride.

Abstract: A method of manufacturing polymer particles for use in a toner capable of incorporating fine wax particle in a polymer resin particle also in a case of adopting a dispersion polymerization method used generally so far, thereby enabling to prevent offset in a heat fixing device provided to copying machines or printers thereby improving the fixing property of the toner and capable of forming images at fine fineness when the polymer resin particles are used as the toner. The fine wax particle is dispersed by using the polymeric dispersant into an organic solvent and one or more of monomers for forming the polymer is dissolved and the polymerizing reaction of the monomer is proceeded while depositing the fine polymer particles on the surface of the fine wax particle upon deposition of the polymer into the organic solvent in the initial stage of the polymerizing reaction of the monomer, thereby incorporating the fine wax particles into the formed polymer particle.

Abstract: A water base ink for ink-jet recording comprises water, a coloring agent, a water-soluble organic solvent, and a benzotriazole-based metal-inactivating agent and alkanolamine. When the ink is used in an ink-jet recording apparatus which has the metal member containing nickel or nickel alloy in an ink supply passage, nickel is eluted from the metal member in an amount of not more than 50 ppm. The ink makes it possible to perform stable jetting operation for a long term without causing any deterioration of metal members of a discharge head due to the metallic corrosion and the elution of nickel into the ink.

Abstract: A water base ink for ink-jet recording comprises water, a coloring agent, a water-soluble organic solvent, and a benzotriazole-based metal-inactivating agent and alkanolamine. When the ink is used in an ink-jet recording apparatus which has the metal member containing nickel or nickel alloy in an ink supply passage, nickel is eluted from the metal member in an amount of not more than 50 ppm. The ink makes it possible to perform stable jetting operation for a long term without causing any deterioration of metal members of a discharge head due to the metallic corrosion and the elution of nickel into the ink.

Abstract: An ink set for ink-jet recording of the present invention comprises a black ink which has a surface tension of not less than 40 mN/m at 25° C., and a color ink which has a surface tension of not less than 40 mN/m at 25° C. The viscosity ratio of the color ink with respect to the black ink is not less than 1.3. The feathering of the ink is avoided, and the bleeding, which would otherwise appear at the boundary between the black ink and the color ink, is avoided.

Abstract: An ink for ink-jet recording comprises water; a coloring agent; an acetylene glycol/ethylene oxide adduct; and first and second polyoxyalkylene glycol-n-alkyl ethers which are different from each other. The first polyoxyalkylene glycol-n-alkyl ether is polypropylene glycol-n-butyl ether having three or more propylene oxides. Even when the recording is performed on regular paper, the color bleed is suppressed.

Abstract: A water base ink for ink-jet recording comprises water, a coloring agent, a water-soluble organic solvent, and a benzotriazole-based metal-inactivating agent and alkanolamine. When the ink is used in an ink-jet recording apparatus which has the metal member containing nickel or nickel alloy in an ink supply passage, nickel is eluted from the metal member in an amount of not more than 50 ppm. The ink makes it possible to perform stable jetting operation for a long term without causing any deterioration of metal members of a discharge head due to the metallic corrosion and the elution of nickel into the ink.

Abstract: An ink set for ink-jet recording is provided, in which the color bleed is reduced at adjoining portions of inks and the deposition of dye or the like in a color ink is not caused when a plurality of colors are recorded on regular paper. The ink set for ink-jet recording, which is composed of inks of a plurality of colors, comprises at least one first ink and at least one second ink having the following compositions respectively. The first ink contains at least one anionicity-added pigment. The second ink contains at least one anionic dye and at least one ethanolamine hydrochloride selected from the group consisting of monoethanolamine hydrochloride, diethanolamine hydrochloride, triethanolamine hydrochloride, and thioethanolamine hydrochloride.