摘要:
The invention relates to an image forming method and an image forming device using at least four color toners of yellow, magenta, cyan and black, and having a fixation step of fixing a toner image on a recording medium using a fixing unit, wherein the total of a dust emission amount from each toner is controlled to be not more than a specific level, and wherein just before the fixation step where the three color toners of yellow, magenta and cyan are laminated on the recording medium, a dust emission amount from the toner to be the outermost layer on the recording medium and a dust emission amount from the toner to be the lowermost layer thereon are controlled to be in a specific relationship therebetween.
摘要:
UV-glossing for simplex and duplex prints, wherein an input member having thereon a pre-gloss toner image including UV-curable toner is moved, in non-slip association with a smooth UV-transparent web, jointly with the web through a plurality of process zones sequentially including a heating zone and an exposure zone, thereby producing an output member having a glossed, UV-cured, surface. In the heating zone, at least the outermost toner of the pre-gloss toner image is heated to a molten state in contact with the web. In the exposure zone, with the molten state being maintained, at least the outermost toner which contacts the web is cured by a flux of UV radiation transmitted through the web. In a preferred embodiment, the UV-curable toner is formed as an outer layer on the pre-gloss toner image.
摘要:
When the conveying speed of a sheet by a first fixing device 9a disposed on the upstream side of the conveying path of the sheet is defined as Vu, and the conveying speed of the sheet by pairs of conveying rollers 31, 32 and 33 provided between the first fixing device 9a and a second fixing device 9b is defined as Vm, and the conveying speed of the sheet by the second fixing device 9b disposed on the downstream side is defined as Vl, Vu, Vm and Vl are set to the relation that Vu
摘要:
UV-glossing for simplex and duplex prints, wherein an input member having thereon a pre-gloss toner image including UV-curable toner is moved, in non-slip association with a smooth UV-transparent web, jointly with the web through a plurality of process zones sequentially including a heating zone and an exposure zone, thereby producing an output member having a glossed, UV-cured, surface. In the heating zone, at least the outermost toner of the pre-gloss toner image is heated to a molten state in contact with the web. In the exposure zone, with the molten state being maintained, at least the outermost toner which contacts the web is cured by a flux of UV radiation transmitted through the web. In a preferred embodiment, the UV-curable toner is formed as an outer layer on the pre-gloss toner image.
摘要:
Toner images applied on the first-side and on the second-side of a substrate are fixed together by microwaves, by being heated to a final fixing temperature, and that the toner image applied on the first-side is prefixed by microwaves before a toner image on the second-side is applied, with the toner image of the first-side being heated to a prefixing temperature that is lower than the final fixing temperature.
摘要:
A belt fixing unit, an image forming apparatus incorporating the fixing unit and a toner material suitably used in the fixing unit, capable of obviating undesirable fixing belt deformation and concomitant results of partial underdevelopment of electrophotographic images. The belt fixing unit for use in an image forming apparatus includes at least a fixing roller (1), a heating roller (2), a fixing belt (4), and a pressing roller (8) disposed in contact with the fixing roller (1) to form a fixing nip having the fixing belt (4) intervening in-between, in which the fixing belt (4) includes at least a base member formed of heat-resisting resin having the thickness of 90 µm or smaller, and the fixing belt (4) is exerted by a tensile force of 0.49 N/mm or less. The toner is a low-melting point toner formed by subjecting a toner preparatory solution, which contains at least a prepolymer having a functional group containing a nitrogen atom, polyester, colorant and releasing agent, dispersed in an organic solvent, to extension and/or crosslinking reaction in an aqueous medium.