摘要:
An image forming apparatus configured (a) to charge uniformly an image bearing member once, (b) to form a latent image including n levels of electric potential on the image bearing member with a single exposure, (c) to adhere a first toner on a portion of the image bearing member which has the lowest electric potential, (d) to decrease the electric potential of a portion of the image bearing member not developed with the first toner by uniformly exposing light at a first wavelength whose transmission factor is lowest for the first toner, (e) to develop using a second toner a portion of the image bearing member which has the second lowest electric potential, (f) to perform a second uniform exposure at a wavelength whose transmission factor is lowest for both the first toner and the second toner, (g) to develop using a third toner a portion of the image bearing member which has the third lowest electric potential, (h) to perform a third uniform exposure at a wavelength whose transmission factor is lowest for each of the first toner, the second toner, and the third toner, and (i) to develop a portion of the image bearing member which has the fourth lowest electric potential.
摘要:
A developing device comprises a latent image carrier that carries a latent image, a toner carrier opposing the latent image carrier while carrying toner to develop the latent image, and plural electrodes arranged in a prescribed direction insulated from each other on the surface of the toner carrier to create an electric field therebetween. An alternating voltage supplying device is provided to supply n number of phases (n ≧2) of an alternating voltage to the plural electrodes, respectively. The alternating voltage changes the electric field to cause the toner to hop and form toner cloud on the surface of the toner carrier. The toner hopping is halted at a prescribed time period during the toner cloud formation.
摘要:
An image forming apparatus for forming a color image, including a charging device configured to charge a moving image bearing member; a writing device configured to form a latent image the image bearing member by exposing a plurality of colors according to image information; and a developing device configured to develop the latent image with toner, wherein the writing device and the developing device are configured to perform exposure and development more than once to the image bearing member, which is charged once by the charging device so that the color image is formed from superimposed toner of each of the plurality of colors on the image bearing member.
摘要:
A developing unit includes a brush member that includes a base member and a plurality of raisings that are erected on a surface of the base. The brush member traps toner within the raisings and causes a flicker movement in the raisings of the brush so that the toner trapped within the raisings is shaken and flown due to the flicker movement to the surface of a toner carrying member.
摘要:
A development device capable of suppressing the occurrence of development defects caused by partial damage to an electrode of a toner bearing roller. The development device is provided with a first electrode layer and a second electrode layer, which are laminated so as to overlap one another in a normal direction with respect to the surface of the roller part of the toner bearing roller. A plurality of openings, which are independently arranged in a matrix in both the roller surface movement direction and an orthogonal-to-movement direction which is the direction orthogonal thereto, are provided in, of these electrode layers, the second electrode layer existing in the upper location that is closer to the roller surface, over the entire latent image bearable area of a photosensitive body in the orthogonal-to-movement direction. The toner on the surface of the roller part is caused to hop between a plurality of spots directly beneath the openings that respectively exist directly beneath the plurality of openings in the second electrode layer, and a plurality of spots between the openings that respectively exist between the plurality of openings in the second electrode layer, within the entire area of the first electrode layer which is uniformly formed in the roller circumferential direction.
摘要:
There is provided a communication method capable of performing connection to the Internet by using another device having the Internet connection function even if a moving picture reproduction device does not have the Internet connection function. In this method, the moving picture reproduction device (101) creates an Internet connection signal (108) including URL information (106) and the like from Internet connection request information (111) and an URL table (107) recorded on a recording medium (105) and transmits it to the Internet connection device (103). The Internet connection device (103) receives the Internet connection signal (108), transmits the Internet connection request information (111) and the URL information (106) to a server (115), acquires and displays the Web site information (116) corresponding to the URL information (106).
摘要:
A development unit includes a toner carrying device, a regulating member, and a toner leak protection member. The toner carrying device having a first electrode and a second electrode arrayed with an interval. The first and second electrodes are supplied with a given voltage to set an electric field, changing in a time cycle, between the first and second electrodes. The electric field is used to hop toner over the toner carrying device to form a toner cloud for developing a latent image. The regulating member regulates an amount of toner on the toner carrying device. The toner leak protection member, made from a conductive material, prevents leakage of toner, and is supplied with a bias voltage.
摘要:
An apparatus and method for recording an image using a transfer-type recording mechanism are such that a layer of an intermediate transfer element is removably formed on a surface of an intermediate transfer medium. The intermediate transfer element includes an ultraviolet stabilizer and a powder mixture. The intermediate transfer layer is capable of being dissolved and swelled by applying an ink liquid on the intermediate transfer medium and enables a viscosity of the ink liquid residing thereon to be increased. An image is produced on the intermediate transfer medium by supplying the ink liquid thereon. The image is then transferred to the recording medium, so that a high quality image is produced without any blurring, mixing or penetration of the ink liquid.
摘要:
An image forming apparatus is capable of specifying the type of an occurring abnormality to a certain extent while avoiding the increasingly complicated control that is caused when a plurality of abnormalities is detected individually according to the presence of their respective causes. A normal group data set, which is a collection of normal value combinations relating to grouped information constituted by a plurality of information of differing types, is stored in RAM or ROM serving as information storage means of a control unit. At least two or more sets of grouped information, comprising first grouped information constituted by a plurality of different types of information, and second grouped information constituted by a plurality of information in a different combination to that of the first grouped information, are obtained from the RAM, the ROM, various sensors, and an operation display unit. A CPU serving as determining means determines a Mahalanobis distance for each set of grouped information on the basis of the normal group data set and the obtained results of each set of grouped information, and uses this Mahalanobis distance to determine the presence of an abnormality according to categories.
摘要:
An image forming apparatus includes an image bearer rotating in a first direction while bearing a toner image thereon in a normal image forming operation; a toner image forming device to form the toner image on the image bearer; a transferring device to transfer the toner image to a recording medium eventually; a cleaning blade to block toner remaining on image bearer without being transferred; and a controller. The controller controls the image bearer to perform an inverse rotation operation in which the image bearer rotates in a second direction opposite to the first direction after controlling the toner image forming device to perform a special image forming operation such that the amount of toner input to the cleaning blade in the special image forming operation is greater than the amount of toner input to the cleaning blade in the normal image forming operation, and then stopping the image bearer.