Abstract: An image forming apparatus includes an image bearing member, a developer carrying member, and a cleaning member including an elastic blade and a regulating portion. When an average of a free length L1 [mm] of the elastic blade in the image bearing region in the widthwise direction of the elastic blade is an average free length L1a [mm], an average of a free length L2 [mm] of the elastic blade on an outside of the developing region in the widthwise direction of the elastic blade is an average free length L2a [mm], and an absolute value of a difference between the average free length L1a and the average free length L2a is a free length difference ?L [mm], the following relationships are satisfied: L2a ?1.2×L1a, L2?L2a??L×0.2, and L1?L1a+?L×0.2.

Abstract: An image forming apparatus includes an all contact full color mode and an all contact monochrome mode. During an image forming job in which image forming is successively performed on a plurality of recording materials, in case that an image is formed using only the first image forming unit with the first image forming unit and the second image forming unit being in contact with the intermediate transfer member after an image has been formed using both of the first image forming unit and the second image forming unit, the controller determines whether the all contact full color mode or the all contact monochrome mode is performed based on an image forming speed to be performed or other criteria.

Abstract: A fuel supply apparatus for an internal combustion engine includes a low-pressure fuel injection mechanism, a high-pressure fuel injection mechanism, a low-pressure fuel pump, a high-pressure fuel pump, a first pulsation damping element, and an orifice. The first pulsation damping element is provided in a passage, located on. the high-pressure fuel pump-side, in a “fuel pipe interposed between the high-pressure fuel pump and the low-pressure fuel injection mechanism. The orifice is provided in the passage, located on the low-pressure fuel injection mechanism-side relative to the first pulsation damping element, in the fuel pipe.

Abstract: A image forming apparatus having an all contact full color mode and an all contact monochrome mode. During an image forming job in which image forming is successively performed on a plurality of recording materials, in case that an image is formed using only the first image forming unit with the first image forming unit and the second image forming unit being in contact with the intermediate transfer member after an image has been formed using both of the first image forming unit and the second image forming unit, the controller determines whether the all contact full color mode or the all contact monochrome mode is performed based on an image forming speed to be performed.

Abstract: An image forming apparatus includes a contact-separation mechanism configured to change over from a fully separated position in which an intermediate transfer member is separated from first and second image bearing members to a partly contacted position in which the intermediate transfer member is separated from the first image bearing member in contact with the second image bearing member to a fully contacted position in which the intermediate transfer member is in contact with the first and the second image bearing members; and a control portion configured to rotationally drive the first image bearing member when the contact-separation mechanism passes through the fully contacted position in association with an image formation for forming a toner image by only the second image bearing member in the partly contacted position.

Abstract: An image forming apparatus includes an intermediate transfer belt, a driving source commonly and rotationally driving the intermediate transfer belt and a second image carrier, a first cleaning blade rubbing at a first rubbing position, and a second cleaning blade rubbing a second image rubbing position. The image forming apparatus includes a lubricant supplying portion capable of supplying lubricant to the first or second rubbing position, a load detecting portion detecting a driving load of the driving source, and a control portion capable of executing a lubricant supplying mode of supplying lubricant to either one of the first and second rubbing positions on a basis of processing contents of a most recent predetermined number of times of image forming operations in a case where the driving load detected by the load detecting portion exceeds a predetermined value.

Abstract: An image forming apparatus, including: a contact-separation mechanism configured to change over from a fully separated position in which an intermediate transfer member is separated from a first and a second image bearing members to a partly contacted position in which the intermediate transfer member is separated from the first image bearing member in contact with the second image bearing member to a fully contacted position in which the intermediate transfer member is in contact with the first and the second image bearing members; and a control portion configured to rotationally drive the first image bearing member when the contact-separation mechanism passes through the fully contacted position in association with an image formation for forming a toner image by only the second image bearing member in the partly contacted position.

Abstract: An image forming apparatus includes an inclining device for inclining the endless belt so as to keep the an endless belt in a normal range in a widthwise direction of the belt; a blade member for pressing against the belt at a pressing portion to clean it; a detecting portion for detecting deviation of the belt from a normal range in a widthwise direction thereof; and an executing portion for executing an operation in a mode in which a lubricant is supplied to the pressing portion, when the detecting portion detects that the belt is deviated from the normal range.

Abstract: An image forming apparatus includes an intermediate transfer belt, a driving source commonly and rotationally driving the intermediate transfer belt and a second image carrier, a first cleaning blade rubbing at a first rubbing position, and a second cleaning blade rubbing a second image rubbing position. The image forming apparatus includes a lubricant supplying portion capable of supplying lubricant to the first or second rubbing position, a load detecting portion detecting a driving load of the driving source, and a control portion capable of executing a lubricant supplying mode of supplying lubricant to either one of the first and second rubbing positions on a basis of processing contents of a most recent predetermined number of times of image forming operations in a case where the driving load detected by the load detecting portion exceeds a predetermined value.

Abstract: An image forming apparatus includes an inclining device for inclining the endless belt so as to keep the an endless belt in a normal range in a widthwise direction of the belt; a blade member for pressing against the belt at a pressing portion to clean it; a detecting portion for detecting deviation of the belt from a normal range in a widthwise direction thereof; and an executing portion for executing an operation in a mode in which a lubricant is supplied to the pressing portion, when the detecting portion detects that the belt is deviated from the normal range.

Abstract: A device for moving a cleansing nozzle connected to a water supply system includes an elongated nozzle, a cylinder in which the nozzle is axially slidable, a motor having an output shaft, a drum body mounted on the output shaft, the drum body having a cylindrical rim surface and a sectoral recess extending from the surface, a sectoral insert disposed in the recess and having a partial cylindrical surface conforming to and forming a continuation of the cylindrical rim surface, and a leaf spring having one end connected to the nozzle and the other end held between the drum body and the sectoral insert such that rotation of the drum body extends and withdraws the nozzle longitudinally as the leaf spring unwraps and wraps around the drum body.