Abstract: An image forming apparatus configured to form an image with developer includes an image bearing member configured to bear an image of the developer, a developer carrying member configured to carry the developer to supply the developer to the image bearing member, and a developer supplying member configured to supply the developer to the developer carrying member. At least a part of a surface of the developer carrying member is coated with lubricant charged to the same polarity as the developer, and an absolute value of a charge amount per unit mass of the lubricant is larger than that of the developer. The image forming apparatus executes a first sequence of applying a potential difference between the developer supplying member and the developer carrying member before image formation to form an electric field to suppress movement of the charged lubricant from the developer carrying member to the developer supply member.

Abstract: A developer bearing member, which bears developer to which additive particles have been added, and an image bearing member, on which an electrostatic latent image formed on the surface thereof is developed by rubbing contact with the developer bearing member, are configured so as to be separable; and during a first operation in which the image bearing member, while in a separated state from the developer bearing member, makes rubbing contact with a cleaning member, a second operation is carried out to place the developer bearing member temporarily in contact with the image bearing member and supply the additive particles to the contact portion between the cleaning member and the image bearing member.

Abstract: The end of the folded-back ply in the tread width direction of the tire (1) extends beyond the tire maximum width, and the height of the bead filler is 30% or less than the tire sectional height. The maximum thickness of the reinforcing rubber layer is less than the maximum thickness of the bead filler. The tread width is greater than or equal to 81% of the tire maximum width. The radius of curvature of the carcass layer on the extension line passing through the tire maximum width position and extending in the tread width direction is 30 mm or greater.

Abstract: An image forming apparatus includes a detachably mountable developing device including a developer container, a developer carrying member, a feeding member, provided in contact with the developer carrying member, for supplying the developer to the developer carrying member, and a developer regulator; and a voltage device capable of applying to the developer carrying member and the developer regulator respective voltages different from each other. The image forming apparatus carries out, when a fresh developing device is mounted, an initial operation in which the developer carrying member is rotated. In the initial operation, the voltage device applies, to at least one of the developer carrying member and the developer regulator, a voltage for the initial operation which is different from the voltage for normal image forming operation, so as to urge a material applied to the developer carrying member in the fresh developing device toward the developer regulator from the developer carrying member.

Abstract: A printing apparatus comprises a feeding unit which feeds a printing sheet stacked on a stacking unit, a conveyance unit which conveys the fed printing sheet, a printing unit which prints the conveyed printing sheet, and a control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet and a leading edge of a succeeding sheet overlap each other, wherein based on an ink amount to be applied to an area of a predetermined range from at least one of the leading edge of the succeeding sheet and the trailing edge of the preceding sheet, the control unit decides an overlapping amount of an area where the trailing edge of the preceding sheet and the leading edge of the succeeding sheet overlap each other.

Abstract: In a developer container or the like, developer is conveyed efficiently by utilizing a projecting portion included in a transmitting member and another projecting portion. A velocity vector that is generated at a free end of a conveying member and is oriented upward becomes largest during a period from when the conveying member having been in contact with the projecting portion is released from the projecting portion until when the free end of the conveying member comes into contact with a storage chamber.

Abstract: A sheet feeding apparatus includes a feeding unit, a separation surface, a first separation part configured to switch between a condition in which the first separation part is protruded from the separate surface and the sheet comes into contact with the first separation part and a condition in which the first separation part is retracted from the separate surface and the sheet does not come into contact with the first separation part and to be fixed to each of the two conditions and a second separation part configured to be movable in a direction from a condition in which the second separation part is protruded from the separate surface and the sheet is capable of come into contact with the second separation part to a condition in which the second separation part is retracted from the separate surface, according to a contact force received from the sheet.

Abstract: A printing apparatus comprises a feeding unit which feeds a printing sheet stacked on a stacking unit, a conveyance unit which conveys the fed printing sheet, a printing unit which prints the conveyed printing sheet, and a control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet and a leading edge of a succeeding sheet overlap each other, wherein based on an ink amount to be applied to an area of a predetermined range from at least one of the leading edge of the succeeding sheet and the trailing edge of the preceding sheet, the control unit decides an overlapping amount of an area where the trailing edge of the preceding sheet and the leading edge of the succeeding sheet overlap each other.

Abstract: A printing apparatus that facilitates an operation of replacing a printing-agent housing container is provided. In the printing apparatus, when a cover is closed, a LED and a light receiving section can acquire information on whether or not an ink tank is mounted on a carriage. Furthermore, when the cover is opened, the light receiving section can move in a retracting direction from an opening.

Abstract: A printing apparatus includes a feeding unit configured to feed a printing sheet stacked on a stacking unit, a conveying unit configured to convey the printing sheet fed by the feeding unit, a printing unit configured to print the printing sheet conveyed by the conveying unit, and a control unit configured to control the feeding unit and the conveying unit. When continuously printing on the first surfaces of a plurality of printing sheets, the feeding unit forms an overlap state in which a trailing edge of a preceding sheet and a leading edge of a succeeding sheet overlap each other, and the conveying unit conveys the printing sheets while keeping the overlap state. When performing double-sided printing on the first surface and the second surface of the printing sheet, the feeding unit does not form the overlap state.

Abstract: An image forming apparatus configured to form an image with developer, including: an image bearing member configured to bear an image of the developer; a developer carrying member configured to carry the developer to supply the developer to the image bearing member; and a developer supplying member configured to supply the developer to the developer carrying member, wherein at least a part of a surface of the developer carrying member is coated with lubricant charged to the same polarity as the developer, an absolute value of a charge amount per unit mass of the lubricant is larger than that of the developer, and the image forming apparatus executes a first sequence of applying a potential difference between the developer supplying member and the developer carrying member before image formation to form an electric field in a direction directing the lubricant from the developer supplying member toward the developer carrying member.

Abstract: In a developer container or the like, developer is conveyed efficiently by utilizing a projecting portion included in a transmitting member and another projecting portion. A velocity vector that is generated at a free end of a conveying member and is oriented upward becomes largest during a period from when the conveying member having been in contact with the projecting portion is released from the projecting portion until when the free end of the conveying member comes into contact with a storage chamber.

Abstract: An image forming apparatus includes a detachably mountable developing device including a developer container, a developer carrying member, a feeding member, provided in contact with the carrying member, for supplying the developer to the carrying member, and a developer regulator; and a voltage device capable of applying to the carrying member and the regulator respective voltages different from each other. The apparatus carries outs, when a fresh developing device is mounted, an initial operation in which the carrying member is rotated. In the initial operation, the voltage device applies, to at least one of the carrying member and the regulator, a voltage for the initial operation which is different from the voltage for normal image forming operation, so as to urge a material applied to the carrying member in the fresh developing device toward the regulator from the carrying member.

Abstract: A printing apparatus that facilitates an operation of replacing a printing-agent housing container is provided. In the printing apparatus, when a cover is closed, a LED and a light receiving section can acquire information on whether or not an ink tank is mounted on a carriage. Furthermore, when the cover is opened, the light receiving section can move in a retracting direction from an opening.

Abstract: A developing apparatus used in an image forming apparatus, including: a developer carrying member configured to carry a developer; and a control member configured to control the amount of a developer carried on the developer carrying member, wherein the control member is manufactured by cutting a supporting member covered with a covering member in a cutting direction intersecting a surface of the supporting member so as to be a predetermined length in the longitudinal direction thereof, and the covering member provided on the upstream side of the control member in the cutting direction comes into contact with the developer carrying member.

Abstract: An electrophotographic image forming apparatus includes an electrophotographic photosensitive member configured to bear an electrostatic latent image, and a developer carrying member configured to develop the electrostatic latent image. The electrophotographic photosensitive member and the developer carrying member are separated from each other during non-image formation and brought into contact with each other after the electrophotographic photosensitive member and the developer carrying member start to be rotated. During a time period between a time when the electrophotographic photosensitive member and the developer carrying member start to be rotated and a time when the electrophotographic photosensitive member and the developer carrying member are brought into contact with each other, a number of revolutions of the developer feed member is larger than a number of revolutions of the developer carrying member.

Abstract: An image forming apparatus includes a control unit controlling first and second voltage application mechanisms and shifting a difference Vdif (=Vrs?Vdr) between Vrs and Vdr toward polarity opposite to normal charge polarity of a developer as S decreases, where S is an absolute value of a speed difference between a circumferential speed of an image bearing member, which rotates while bearing an electrostatic latent image and a circumferential speed of a developer bearing member, which rotates at a constant circumferential speed ratio with respect to the image bearing member to develop the electrostatic latent image while bearing the developer, Vdr is a voltage that the first voltage application mechanism applies to the developer bearing member, and Vrs is a voltage that the second voltage application mechanism applies to the developer supply member.

Abstract: A correction information determination method may be used to control a recording apparatus. The recording apparatus includes a first conveyance unit, a second conveyance unit, and a recording unit arranged between the first and second conveyance units. The first conveyance unit is caused to rotate and record patterns for measuring a conveyance distance when a conveyance state changes from both the first and second conveyance units being utilized to the second conveyance unit being utilized. A conveyance start rotation phase of the first conveyance unit is acquired. Based on the conveyance distance measured based on the patterns, correction information about a rotation amount of the first conveyance unit is determined, the rotation amount used when the conveyance state is changed during recording by the recording apparatus.

Abstract: An image forming apparatus includes a control unit controlling first and second voltage application mechanisms and shifting a difference Vdif (=Vrs?Vdr) between Vrs and Vdr toward polarity opposite to normal charge polarity of a developer as S decreases, where S is an absolute value of a speed difference between a circumferential speed of an image bearing member, which rotates while bearing an electrostatic latent image and a circumferential speed of a developer bearing member, which rotates at a constant circumferential speed ratio with respect to the image bearing member to develop the electrostatic latent image while bearing the developer, Vdr is a voltage that the first voltage application mechanism applies to the developer bearing member, and Vrs is a voltage that the second voltage application mechanism applies to the developer supply member.

Abstract: A feeding device includes a feeding unit configured to be driven while being in contact with a recording sheet to feed the recording sheet, and a stacking unit configured to stack a plurality of the recording sheets and to press or release the stacked recording sheets to or from the feeding unit. Also, the feeding device includes a separating unit configured to separate the plurality of recording sheets fed by the feeding unit, one by one, a detecting unit configured to detect the recording sheet in an area downstream of the separating unit, and a control unit configured to control each of the units. The control unit switches a feeding operation between at least two feeding operations in accordance with a drive time of the feeding unit from when the feeding unit is started to be driven to when the detecting unit detects the recording sheet.