摘要:
Output signals Vp from a density sensor are sampled for plural positions on an intermediate transfer belt and an amount of toner adhesion is determined based on the results of sampling. Since these sample data pieces may contain noises, each predetermined number of data pieces of higher order and of lower order are removed from the resultant sample data string. The removed data pieces are each replaced by an average value Vpavg of the other sample data pieces. The amount of toner adhesion is calculated based on the data string thus replaced.
摘要:
An image forming apparatus including an electrostatic latent image carrier for carrying an electrostatic latent image on a peripheral surface thereof, a plurality of development units each accommodating a toner and adapted to develop the electrostatic latent image by the toner, a development unit holder capable of holding the plurality of development units, and a control unit for the development unit holder for controlling the operation of the development unit holder and for selectively changing over the development unit used in development among the plurality of development units, the image forming apparatus comprising: an identifying device for identifying at least color information on the toner accommodated in the development unit, wherein the development unit holder is capable of holding at least two development units accommodating the toner of a same color, and wherein the control unit identifies the development units of the same color based on the color information identified by the identifying device, and controls the operation of the development unit holder so as to effect monochrome development by using the at least two development units.
摘要:
An image forming apparatus and method that repeats image create/transfer processing, in which serial processing of forming a toner image on a photosensitive member while rotating the photosensitive member and a transfer medium in a sub scanning direction and thereafter transferring the toner image onto the transfer medium, for a plurality of toner colors which are different from each other. The apparatus and method lay toner images in the respective toner colors over each other on said transfer medium and accordingly form a color image. Correcting transfer start positions of toner images in at least one or more toner colors out of the plurality of toner colors is based on a registration control amount which is necessary to correct relative registration deviations among toner images on the transfer medium.
摘要:
A CPU 111 drives an intermediate transfer belt at a first speed in a normal mode, but drives the intermediate transfer belt at the first speed in a low speed mode at least until the end of forming a toner image performed by a developer part 20, reduces the speed from the first speed to a second speed after the end of forming the toner image and then maintains the second speed at least until the end of secondary transfer. In the intermediate transfer belt, there are a transfer area, in which primary transfer of a toner image is possible, and a transfer protection area in which primary transfer of a toner image is prohibited and which is provided along a direction of rotation axis. In the low speed mode, the CPU 111 controls image forming so that a toner image will be primarily transferred onto such a portion of the transfer area which is close to the transfer protection area and on the upstream side of the intermediate transfer medium along a direction of rotational driving.
摘要:
There is disclosed an image element wherein a dye, formed or released by reaction with an oxidized product of specific a compound, and specific a fixed compound, coexist in a binder on a support. The image element can have high color density in image, and it can be excellent in light fastness. Furthermore, there is also disclosed an image formation method to provide the image element.
摘要:
A magneto-optical recording apparatus for recording information signals on a magneto-optical recording medium is comprised of an optical pickup device for emitting a laser beam to a lower side of the magneto-optical recording medium, a magnetic head including a pot core which has a center pillar and a coil which is wound around the center pillar and supplying a magnetic power to an upper side of the magneto-optical recording medium, and a holding device for holding the magnetic head so as not to contact with the upper side of the magneto-optical recording medium when the information signals are recorded on the magneto-optical recording medium.
摘要:
An automatic sheet feeder for a copying machine etc. for correctly resuming a continuous copying operation after power to the sheet feeder (as well as the copying machine) is stopped by an emergency (safety) power stop. The copying machine has a state memory in which the state of the automatic sheet feeder (whether it is operating or not operating) at the time of a power stoppage to the automatic sheet feeder is stored. When the supply of power to the automatic sheet feeder begins, the state data is sent from the copying machine to the automatic short feeder. When the state data from the copying machine indicates that the sheet feeder was not operating, the automatic sheet feeder performs a preset initializing process in which the feeding rollers are rotated to eject the original sheet on the contact glass plate of the copying machine. When the state data indicates that the sheet feeder was operating when the power supply was stopped however the sheet feeder does not perform the initializing process and the original sheet still on the contact glass plate (which has not yet copied due to the emergency stop) is copied, and the continuous copying operation is resumed without missing any copies of plural original sheets.
摘要:
An image forming apparatus comprises: a latent image carrier which carries an electrostatic latent image; a developing unit which visualizes with toner the electrostatic latent image carried by the latent image carrier and forms a toner image; an intermediate transfer medium to which the toner image is transferred from the latent image carrier and which rotates and transports the toner image to a predetermined transfer position and transfers the toner image to a recording medium; a cleaner which abuts on the surface of the intermediate transfer medium and removes toner which adheres to the surface of the intermediate transfer medium after the transfer to the recording medium; and a controller which, assuming that the direction which is orthogonal to the travel direction in which the intermediate transfer medium moves is a width direction, executes toner accumulating processing during which predetermined toner images are formed as end patch images in end areas of the surface of the intermediate transfer medium which are located on outer side along the width direction relative to an image forming region in which a toner image corresponding to size of the recording medium is formed and the cleaner then removes the end patch images.
摘要:
A cellulose acylate film is provided and has an elasticity modulus of 4,800 MPa to 10,000 MPa in at least either a machine direction MD at film-formation time or a direction TD perpendicular to the machine direction.
摘要:
An image forming apparatus which includes: a plurality of developers each of which stores therein a toner of the same color and includes a toner carrier structured to rotate while carrying the toner on its surface; and a controller which executes an image forming operation using the developer in accordance with an image forming command, wherein the controller selects a developer from the plurality of developers based on a length of shutdown time from the end of use in the previous image forming operation and executes the image forming operation using the selected developer.