摘要:
An electrophotographic color image forming machine registers which a second color toner image on a first color toner image which has been previously formed on an image carrier to form a color image. The registered images are then transferred onto a recording sheet. The machine includes control apparatus that includes first and second exposure control modulators which respectively control an exposure amount of at least one of the first color toner images and the second color toner image. A smoothing processor controls at least one of a size and a position of at least one of the first and second color toner dot images within each of a plurality of pixels and a discriminator determines whether one of the size and the position of the dot image should be controlled. A hue corrector is provided which adjusts a ratio of the exposure amounts provided by the first and second exposure control modulators to control the first and second exposure control modulators on the basis of a discriminator result of the discriminator.
摘要:
In an image forming machine in which a latent image is formed on an image carrier using an exposure device corresponding to an image forming signal, and a toner image is formed by a developing device using toners, there is provided with a first adjustment device by which an adhesion amount of toner is adjusted, a discriminator by which an isolated dot or an edge dot is discriminated, a second adjustment device by which an adhesion amount of toner is adjusted according to a discrimination result by the discriminator, and a controller by which the adjustment conditions of the adhesion amount of the second adjustment device differ corresponding to the discriminated isolation dot or edge dot, and areas other than the discriminated dots.
摘要:
In a toner image forming apparatus capable of changing the fixing condition of a fixing device to fix a toner image on a recording sheet, there is provided a control device to change at least one of the charging condition of a charging device, the exposure condition of the exposing device and the developing condition of the developing device to change the toner amount in the toner image in accordance with the change in the fixing condition.
摘要:
The present invention is such that in a recording apparatus comprising a toner image carrier and an intermediate image transfer material which receives the toner image transferred from the image carrier and then transfers the toner image onto the subsequent transfer sheet material (recording sheet), and an image transfer section for transferring the toner image onto the moving transfer sheet material comprising a transfer roller and pressure roller pressing thereon, the recording apparatus has the following pre-heating means comprising a heat member and a pressing member which is located at a position prior to the transfer section and which, brings the subsequent transfer sheet material into close contact with or presses the subsequent transfer sheet material against the periphery of the pressure roller, the member being provided at least on its side facing the transfer sheet material with a heat-resistant, elastically deformable porous material.
摘要:
A cleaning member for an intermediate transfer member of a reproducing apparatus for transferring a toner image formed on a toner image forming member to the intermediate transfer member and further transferring the toner image to a subsequent transfer material from the intermediate transfer member, wherein the cleaning member has an outer layer of a porous or fibrous substrate and an outer surface of the toner, a resin identical with the toner or a resin compatible with the resin, or the cleaning member has an outer layer of adiabatic elastic material and a thin metallic outer surface layer.
摘要:
A recording apparatus for electrostatic images comprising a photoreceptor, an intermediate transfer substance and a means for heating toner images transferred onto said intermediate transfer substance and transferring again and fixing them onto a transfer material, characterized in that there are provided a means for detecting a temperature of aforesaid photoreceptor and a means for keeping the temperature of said photoreceptor within a fixed range of T.sub.1 through T.sub.2.
摘要:
A recording apparatus having an image carrier and a heated intermediate transfer member is disclosed. The improvement is the addition of a shielding member of porous metal for preventing water vapor and/or heat from reaching the surface of the image carrier, wherein the shielding member has a trapping capability for condensing and trapping the water vapor.
摘要:
A recording apparatus wherein an electrostatic latent image on an electrostatic latent image retaining member is developed into a visible image by means of a developer transported on the surface of a developer carrier having at least a magnet movably provided therein. At least a part of the electrostatic latent image retaining member is constituted by a magnetic material.
摘要:
An apparatus for forming images on at least one surface of a sheet includes a reader for reading image information on documents, a memory for storing image signals output by the reader, and an image forming unit for selectively forming one of: (i) two page toner images corresponding to the image signals of two pages of the documents separately on two image carrying members, and (ii) a single toner image on one of the two image carrying members. A jam detector detects a jammed sheet, and a delivery detector detects delivery of a copied sheet to outside the apparatus. Image signals are eliminated from memory in accordance with a progression of image formation. If the jam detector detects the occurrence of the jammed sheet, a control unit prohibits the memory from eliminating the image signals until the delivery detector detects a next sheet delivered from the apparatus, so that the selected image expected to be formed by the image forming unit on the jammed sheet may be properly formed on a following sheet based on the image signals retained in the memory. A selector is provided for selecting one of a both-surface copy mode and a single-surface copy mode, wherein the control unit controls the memory to store the image signals corresponding to two pages of the documents when the both-surface copy mode is selected and to store the image signals corresponding to the single page of the documents when the single-surface copy mode is selected.
摘要:
An image forming apparatus includes a first image carrier on which a toner image forming device forms a toner image; a second image carrier provided opposite to the first image carrier, onto which the toner image on the first image carrier is transferred; first and second transfer devices for transferring the toner image on the first and second image carriers onto one side and the other side of a transfer material, respectively; and a fixing device for fixing the toner images on both sides of the transfer material transferred respectively by the first and second transfer devices. The fixing device includes first and second fixing members provided opposite to one side and the other side of the transfer material, respectively, wherein the transfer material passes between the first and second fixing members, and first and second sensors are provided for detecting temperature of the first and second fixing members respectively. The apparatus further includes a control device for controlling the toner image forming device, the first and second transfer devices, and the fixing device. The control device enables image formation on both sides of the transfer material or on one side of the transfer material, and prohibits image formation on at least both sides of the transfer material when the temperature detected by the first sensor is appropriate for the first fixing member, and the temperature detected by the second sensor is not appropriate for the second fixing member.