摘要:
An image fixing unit for a wet-type electrophotographic copying machine capable of forming a latent electrostatic image on a photoconductor element, developing the latent electrostatic image to a visible toner image by a developer comprising a carrier liquid and toner particles and transferring the visible toner image to a transfer sheet, is disclosed, which comprises (a) a non-thermal carrier liquid content reduction device for reducing the content of the carrier liquid in the developer deposited imagewise on the transfer sheet without application of heat thereto; and (b) a thermal image fixing device for fixing the toner image to the transfer sheet by directly heating the toner image formed on the transfer sheet after the reduction of the content of the carrier liquid in the imagewise deposited developer by the non-thermal carrier liquid content reduction device.
摘要:
A wet-type image formation apparatus comprising a latent electrostatic image formation unit capable of forming on a latent-electrostatic-image-bearable photoconductive member a latent electrostatic image corresponding to an original image; and a wet-type development unit capable of developing the latent electrostatic image into a visible toner image with a liquid developer composed of (i) a carrier liquid comprising a petroleum aliphatic hydrocarbon and a silicone oil with a siloxane structure, and (ii) toner particles comprising a coloring agent and a binder resin, which are dispersed in the above-mentioned carrier liquid.
摘要:
In a wet-type electrophotographic image formation method using an organic electrophotographic photoconductor constituted of an electroconductive support and a photoconductive layer formed thereon, the steps of (1) forming a latent electrostatic image on the photoconductive layer, and (2) developing the latent electrostatic image to a visible toner image with a developer comprising toner particles and a carrier liquid constituted of or including a silicone oil in which the toner particles are dispersed.
摘要:
A liquid developer for developing latent electrostatic images comprises (i) a carrier liquid comprising at least one component selected from the group consisting of a phenylmethyl silicone oil and a cyclic dimethyl polysiloxane, and (ii) toner particles dispersed in said carrier liquid, and images are formed by a wet-type electrophotographic image formation method using the liquid developer and thermally fixed to a transfer sheet.
摘要:
An image forming apparatus which uses a liquid developer to produce a visible image from an image carrier is provided with a movable cleaning unit. This movable cleaning unit is moved in and out of contact with the image carrier. A tank stores the liquid developer which is fed to both the developing unit and to the cleaning unit and is provided with a mechanism for feeding the developing unit and the cleaning unit with the liquid developer which is so stored.
摘要:
A fixing method for a wet process copier which develops an electrostatic latent image by using a heat-bridging type toner, transfers the resulting toner image to a paper sheet, and fixes the toner image transferred on the paper sheet by transporting the paper sheet through a nipping section defined by a heating roller and a pressing roller such that the side of the paper sheet carrying the toner image directly contacts the heating roller. At least a surface portion of the heating roller is made of either one of monomeric, additive-free RTV (Room Temperature Vulcanized) and LTV (Low Temperature Vulcanized) silicone rubbers. The heating roller has average surface roughness of less than 3 microns.
摘要:
A wet-type image formation apparatus comprising (i) a belt-shaped photoconductor prepared by depositing a photoconductive material on the outer surface of a belt-shaped substrate; (ii) a plurality of pulleys which support and drive the belt-shaped photoconductor; (iii) a charging unit; (iv) an exposure unit; (v) a development unit; (vi) an image transfer unit; (vii) a squeeze roller unit, comprising a pair of roller-supporting members and a co-axial roller; (viii) a cleaning means; (ix) a liquid developer removing unit which is provided inside the belt-shaped photoconductor, capable of removing the liquid developer dropping onto the inner surface of the belt-shaped photoconductor and recovering it in a liquid developer reservoir or a development unit.
摘要:
In a wet-type image formation apparatus, a latent electrostatic image formation unit; a wet-type development unit for developing a latent electrostatic image into a visible toner image with a liquid developer constituted of (a) a carrier liquid constituted of or including a silicone oil with a siloxane structure and (b) toner particles constituted of or including a coloring agent and a binder resin, which are dispersed in the carrier liquid; an image-transfer unit; and an image-fixing unit including a heat-application roller, the surface of which is coated with a release agent constituted of or including silicone oil with a siloxane structure.
摘要:
An image formation apparatus including a latent electrostatic image formation unit for forming on a latent-electrostatic-image-bearable photoconductive member a latent electrostatic image corresponding to an original image; a development unit for developing the latent electrostatic image into a visible toner image with a developer; an image-transfer unit for transferring the visible toner image from the photoconductive member to a transfer sheet; an image-fixing unit for fixing the visible toner image to the transfer sheet, including an image fixing roller, the surface of which is coated with a release agent comprising a silicone oil; a solvent mist generation unit for generating a solvent mist; and an ozone decomposing unit for trapping and decomposing ozone generated in the image formation apparatus by mixing the ozone with the solvent mist.
摘要:
A developing replenisher material or a replenisher liquid developer to be supplied to a developer tank of an electrostatic copying machine comprises 1000 parts by weight of a carrier liquid composed mainly of aliphatic hydrocarbon and 200 or 1200 parts by weight of toner particles composed mainly of a binder resin and a pigment. The toner concentration of the replenisher liquid developer is high enough to prevent an overflow from the developer tank, allow many copies to be produced by the copying machine, and prevent a solvent shock. The toner particles, when added to the carrier liquid, can immediately and well be dispersed in the carrier liquid.