Patent classifications
G03G15/16
Image forming apparatus
An image forming apparatus includes an image forming unit configured to form a toner image, an intermediate transfer belt configured to transfer the transferred toner image to a recording material at a secondary transfer position, a first cleaning unit arranged downstream of the secondary transfer position and upstream of the primary transfer position in a conveyance direction of the intermediate transfer belt and configured to clean the intermediate transfer belt, a second cleaning unit arranged downstream of the secondary transfer position and upstream of the first cleaning unit in the conveyance direction of the intermediate transfer belt and configured to clean the intermediate transfer belt, a conveyance unit provided opposite to the first and the second cleaning units at a position below the first and the second cleaning units and configured to convey the recording material, and a third space from which the first and the second spaces are accessible.
Image forming apparatus and image forming method
An image forming apparatus includes a transfer belt, a forming unit, a detection unit, a correction unit, a drive system, a determination unit, and a notification unit. The forming unit forms an image-misregistration detection pattern of a plurality of colors on the belt. The correction unit corrects an image misregistration of an image of each color based on a detection result of the pattern. The determination unit detects a difference amount between a pattern interval of the pattern on the belt and a pattern interval serving as a reference value for each color and determines that an abnormality has occurred in a driving state of the drive system, in response to the difference amount equal to or greater than a threshold value. The notification unit notifies occurrence of the misregistration when the determination unit determines that the driving state is abnormal, based on the difference amount of any one color.
Image forming apparatus and image forming method
An image forming apparatus includes an image bearer, a developing unit configured to develop a latent image formed on the image bearer with a toner to form a toner image, and a transfer member including a contact area that comes in contact with the image bearer. The toner image is primary transferred from the image bearer to the transfer member. A speed difference between the image bearer and the transfer member at the contact area is 0.1% or greater but 0.8% or less. The toner has an average circularity of 0.971 or greater but 0.986 or less and a shape factor SF-2 of 110 or greater but 119 or less. The speed difference is represented by the following formula:
Speed difference [%]={(V1−V2)/V2}×100 [Speed difference]
where V1 is a linear speed of the image bearer, and V2 is a linear speed of the transfer member.
RECORDING DEVICE AND TRANSPORT DEVICE
A recording device includes a recording unit configured to perform recording on a medium, a transporting belt configured to transport the medium, the transporting belt including a surface on which the medium is able to be supported, a washing unit configured to wash the surface using a liquid, an ultrasonic sensor configured to transmit an ultrasonic wave onto the surface and receive the ultrasonic wave reflected from the surface, and a control unit configured to determine a remaining state of the liquid on the surface based on a result of detection by the ultrasonic sensor, in which the ultrasonic sensor transmits the ultrasonic wave onto at least part of the transporting belt, from downstream of the washing unit to upstream of the recording unit, in a rotation direction of the transporting belt.
INTERMEDIATE TRANSFER BELT DEVICE AND IMAGE FORMING APPARATUS
An intermediate transfer belt device has an intermediate transfer belt, a drive roller that drives the intermediate transfer belt, and a pressure roller that presses from an outer surface of the intermediate transfer belt toward the drive roller. The pressure roller is disposed at a position corresponding to a downstream end in a rotating direction C in a contact region between the intermediate transfer belt and the drive roller. The intermediate transfer belt is provided in contact with the pressure roller and such that the outer surface of the intermediate transfer belt is wound around an outer surface of the pressure roller at a predetermined winding angle.
IMAGE FORMING APPARATUS
An image forming apparatus includes: a paper feeding part that houses a medium to be fed; a belt-shaped image holding part that holds an image on a surface of the image holding part and rotates; a transfer part disposed to face the image holding part and transfers an image onto a medium from the image holding part in a final transfer region; and a cleaning part that removes a deposit on the surface of the image holding part passed through the final transfer region, in which a downstream side of the paper feeding part in a transport direction of a medium is inclined to be closer than an upstream side of the paper feeding part to the final transfer region, and the image holding part is inclined upward on a downstream side of the final transfer region toward the downstream side in a rotation of the image holding part.
Electrostatic Printing Method
The electrostatic printing method of the present invention comprises arranging and adhering an original plate which is composed of an electrode and a plate layer having built-in a letterpress, intaglio plate, or gravure plate pattern or a mask sheet having ion-permeable openings on one or both sides of an image receiving sheet having an electrode and an image receiving layer, and forming a predetermined electrostatic pattern on the image receiving layer of the image receiving sheet by applying a voltage between the electrode of the original plate and the electrode of the image receiving sheet or by performing ion irradiation through the mask sheet.
IMAGE FORMING APPARATUS
An image forming apparatus include an image forming device, an image bearer, a transferrer, a cleaner, and an adhesion amount detector. The image forming device forms, on the image bearer, a toner image to be transferred to a recording medium and a toner image pattern to be input to the cleaner without being transferred to the recording medium. The cleaner cleans the image bearer. The adhesion amount detector detects a toner adhesion amount of the toner image. The toner image pattern is a belt-shaped pattern elongated in an orthogonal direction orthogonal to a traveling direction of the image bearer and having a greater amount of toner input to a portion of the cleaner corresponding to a position of the adhesion amount detector in the orthogonal direction than that input to a portion of the cleaner not corresponding to the position of the adhesion amount detector in the orthogonal direction.
CONTAINER MEMBER AND IMAGE FORMING APPARATUS
A container member includes a container body that contains a recording medium and that tilts such that a leading edge of the contained recording medium is higher than a trailing edge, and a leading edge restriction portion that comes into contact with a portion of the leading edge except for at least a first end portion and that restricts a position of the leading edge.
ELECTROPHOTOGRAPHIC BELT AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS
Provided is an electrophotographic belt including at least: a base layer; and a surface layer containing the following A, B, and C:
A: a compound 1 having structures represented by formula (I) and formula (II):
##STR00001##
in the formula (I), R1 represents a linking group, and R2 represents a hydrogen atom or a methyl group;
##STR00002##
in the formula (II), R3 represents a hydrogen atom, a methyl group, or a methyl ester group, R4 represents a linking group, R5 represents a methyl group or a tert-butyl group, and “m” represents an integer of from 25 to 100;
B: perfluoropolyether;
C: a binder resin.