The electrophotographic apparatus and process cartridge comprising an electrophotographic photosensitive member, a cleaning blade, and developing unit containing a toner, wherein the cleaning blade comprising a support member and an elastic member whose portion is abutting a surface of the electrophotographic photosensitive member; the elastic member has an elastic modulus of 15 to 470 MPa with coefficient of variation for the elastic modulus being not more than 7.0%, and the absolute value of a difference between Martens hardness values is not more than 0.30 N/mm.sup.2 as measured under prescribed conditions; the toner contains a toner particle and an external additive whose a number-average primary particle diameter is from 5 to 25 nm, when X1 is a coverage ratio of the toner particle by the external additive and X2 is a theoretical coverage ratio, X1 is 50 to 85 area %, and X1/X2≥−0.0042×X1+0.60 is satisfied.

Provided is a cleaning blade including: an elastic member containing a polyurethane; and a supporting member configured to support the elastic member. The polyurethane has a linear moiety represented by —(CH.sub.2)m-. The elastic member has a plate shape having a main surface and a distal end surface forming a distal end-side edge with the main surface, at least on a distal end side. Martens hardness at positions on a bisector at intervals of 30 μm from a distal end-side edge to a position furthest away from the distal end-side edge by 100 μm decreases from a distal end-side edge to the position. A Martens hardness HM1 of the elastic member at a position P1 is 1.0 N/mm.sup.2 or more. The elastic layer satisfies Kω.sub.1>Kω.sub.2>Kω.sub.3. Further, the cleaning blade has an erosion rate E of 0.6 μm/g or less.

An imaging system includes a lubricant roller to transfer a lubricant to the image carrier, a solid lubricant in contact the lubricant roller to supply the lubricant to the lubricant roller, and a pressing member to urge the solid lubricant against the lubricant roller. The lubricant roller includes a foam that is in contact with the image carrier. The foam is selected to have a permeability of approximately 0.15 dm.sup.3/s to 1.4 dm.sup.3/s.

A static elimination device includes: a first static elimination member that makes contact with a medium that is transported; a second static elimination member arranged such that the medium is inserted between the first static elimination member and the second static elimination member; and a power source that applies a voltage to at least one of the first static elimination member or the second static elimination member, in which at least one of the first static elimination member and the second static elimination member has an elastic body.

A static elimination device includes: a first static elimination member that makes contact with a medium that is transported; a second static elimination member arranged such that the medium is inserted between the first static elimination member and the second static elimination member; and a power source that applies a voltage to at least one of the first static elimination member or the second static elimination member, in which at least one of the first static elimination member and the second static elimination member has an elastic body.

A power supply apparatus includes a transformer, an electrolytic capacitor provided in primary circuitry of the transformer, a board, and a heat sink having a protruding portion and a cover portion. The electrolytic capacitor includes an explosion-proof valve that opens to cause an electrolytic solution to be jetted from the electrolytic capacitor. The electrolytic capacitor is placed on the board so that a surface of the electrolytic capacitor opposite to a surface on which the explosion-proof valve is provided faces the board. The cover portion has a hole formed in the cover portion and, when the cover portion is viewed in a direction vertical to the surface of the electrolytic capacitor on which the explosion-proof valve is provided, at least the explosion-proof valve and the hole formed in the cover portion do not overlap each other and the cover portion encompasses the explosion-proof valve.

An information processing apparatus includes a processor configured to display an operation screen for receiving an operation regarding setting information of an image forming apparatus that operates in association with the setting information with optimum values changing depending on external factors on a display device and receive an operation on the operation screen, in which the processor is configured to display a creation screen that is one of the operation screen and is used to newly create the setting information, on the display device, receive an input of a reason for creation of the new setting information on the creation screen and specify an item to be set corresponding to the received reason for creation among setting items in the setting information, and display the specified item on the operation screen to be identifiable with respect to other setting items.

A cleaning device includes a separation and contact mechanism that separates a web from a conveyance roller and brings the web into contact with the conveyance roller, and a controller. The controller includes a conveyed sheet number determination unit and a separation and contact control unit. The conveyed sheet number determination unit monitors a conveyed sheet number of both-surface image forming sheets where image forming processing is applied to both a first surface and a second surface with respect to the sheets conveyed by the conveyance roller, and determines whether or not a cumulative value of the conveyed sheet number has reached a predetermined threshold value. The separation and contact control unit controls the separation and contact mechanism so as to allow the web to be pressed to the conveyance roller by a pressing roller when the cumulative value of the conveyed sheet number has reached the threshold value.

An image forming apparatus includes a photosensitive drum, a development roller configured to supply developer to the photosensitive drum, a transfer roller configured to transfer a developer image formed on the photosensitive drum to a recording material, and a cleaning roller being in contact with the photosensitive drum, configured to clean a part of the recording material adhered to the photosensitive drum, wherein the diameter of the transfer roller is greater than the diameter of the development roller and the diameter of the cleaning roller is greater than the diameter of the development roller.

An image forming apparatus includes a photosensitive member, an intermediate transfer body including a surface layer that includes an acrylic resin and a fluorine-containing polyether, first and second transfer units, and an intermediate transfer body cleaning unit that includes a cleaning blade including a tetrahedral amorphous carbon layer disposed on a surface of a contact portion of the cleaning blade, the contact portion being arranged to contact the intermediate transfer body, and removes a residual toner by bringing the cleaning blade into contact with the intermediate transfer body. Linear velocities of the intermediate transfer body and the photosensitive member are adjusted to satisfy a requirement (1): Requirement (1): 0.3≤|Linear velocity of Intermediate transfer body−Linear velocity of Photosensitive member|/Linear velocity of Intermediate transfer body×100≤1.5.