摘要:
A photosensitive drum unit for an electrophotographic apparatus, of the type of contacting a cleaning blade to the photosensitive drum is disclosed, in which a cleaning assistant composed of a lubricant capable of lowering the frictionally charged potential of the photosensitive drum caused by the friction of the photosensitive drum and the cleaning blade to not higher than 100 V is attached to the surface of the photosensitive drum, the cleaning blade or both.
摘要:
A developer for an electrostatic latent image is disclosed, which comprises a toner powder and a fine powder of an acrylic homopolymer or copolymer having an average particle size smaller than that of the toner powder. The developer can be easily cleaned off without causing damage to a latent image-forming member.
摘要:
A process and apparatus for automatically weighing and introducing chemicals are intended to automatically weigh the chemicals and introduce the chemicals into a treatment tank; the chemicals are injected into a chemical container and weighted, and then transported to a dissolving tank adjunct to the treatment tank, and then introduced into the dissolving tank. A control means is provided to put under its control the operations of injecting into a chemical container a desired amount of desired chemicals selected from among plural sorts of chemicals and driving a transportments and an introducing means automatically in association with this injecting operation.
摘要:
A image formation process comprising the steps of forming an electrostatic latent image on an electrostatic latent image carrier, developing the electrostatic latent image with a developer to provide a toner image, transferring the toner image to a transfer material, and heat-fixing the toner image on the transfer material, wherein the developer comprises a toner for developing electrostatic latent images comprising a binder, a colorant, and 1 to 30% by weight of a lubricant which comprises a modified polyethylene wax which is obtained by homopolymerizing ethylene or copolymerizing ethylene and an .alpha.-olefin having 3 to 10 carbon atoms in the presence of a metallocene catalyst and modifying the resulting ethylene homo- or copolymer by grafting at least one grafting monomer selected from the group consisting of a styrene monomer and an unsaturated carboxylic acid monomer, and has a hexane extraction of not more than 65% by weight, and wherein the transfer step comprises bringing a bias roll into contact with the back side of a transfer material. The image formation process of the present invention requires less power consumption. The toner for use in the present invention provides a good releasability at low temperatures and shows excellent anti-offset properties and powder fluidity without causing the generation of ozone, image defects and blocking.
摘要:
A toner for development of latent electrostatic images comprising a coloring agent, a binder resin and a fixing aid, said binder resin comprising a polyvalent metal salt (b) of a carboxyl-containing addition polymer (a) which satisfies the following expressions:10.sup.-2
摘要:
An image-fixing method for heat-fixing a toner image, by feeding an transfer medium carrying the toner image between a heating unit heated by an induction-heating process and a pressurizing unit placed to press against the heating unit, wherein the electric resistivity at least of the outermost layer of the heating unit is 10−7 Ωm or more and less than 10−2 Ωm, and the toner image is formed by using a toner containing an amorphous resin having an ionic concentration in the range of 10−5 to 10−3 mole/g as the binder resin.
摘要:
A magnetic particle brush developing carrier used for electrostatic latent image developing is disclosed, comprising a magnetic particle having a surface coating comprising two kinds of fluoro-type resins, with one of the resins having a higher critical surface tension than the other. The carrier maintains its triboelectric properties even after extended use, it reaches charge saturation after a short period of triboelectrification, and it has excellent charge stability against environmental change.
摘要:
An apparatus for moving from position to position along coke ovens during the production of coke which is capable of stopping at its target stop position with high accuracy and without deteriorating its operating efficiency. In the mobile apparatus, a travel pattern is stored in a computer for controlling the apparatus depending on a target stop position of the apparatus and its travel direction immediately before its stop. As a result, any stop error due to the particular conditions inherent in each target stop position can be eliminated. The computer may include a program for correcting the travel pattern depending on the stop error if any.
摘要:
A developer for an electrostatic latent image is disclosed, which comprises a carrier powder, a toner powder, and a fine powder that has a particle size smaller than that of the toner powder said fine powder being made of a polymer which is located closer to the carrier side of the triboelectric series than to the toner side. The developer does not cause insufficient cleaning or toner filming on a photoreceptor or electrostatic recording element.
摘要:
An image-fixing method for heat-fixing a toner image, by feeding an transfer medium carrying the toner image between a heating unit heated by an induction-heating process and a pressurizing unit placed to press against the heating unit, wherein the electric resistivity at least of the outermost layer of the heating unit is 10−7 Ωm or more and less than 10−2 Ωm, and the toner image is formed by using a toner containing an amorphous resin having an ionic concentration in the range of 10−5 to 10−3 mole/g as the binder resin.