Abstract: An apparatus for controlling a blur correction by driving first and second correction units, the first correction unit moving an optical element, the second correction unit moving a sensor, comprising a determination unit configured to determine a strength of the blur correction, a calculation unit configured to calculate a correction amount based on the strength and a shake amount, and a control unit configured to control the first and second correction units, wherein in a case where the control unit controls the first and second correction units by a first method, the determination unit determines the strength based on a position of the optical element, and in a case where the control unit controls the first and second correction units by a second method, the determination unit determines the strength based on a position of the sensor.

Abstract: An image blur correction apparatus comprises a calculation unit configured to calculate a movement amount of a moving device configured to move an image of a subject on an imaging plane, an acquisition unit configured to acquire information of a position of the moving device, a control unit configured to control movement of the moving device, and a selection unit configured to select either to cause the control unit to perform the control by a first image blur correction mode, or to perform the control by a second image blur correction mode in which the position variation amount of the moving device associated with the change of acceleration applied to the apparatus becomes smaller than the first image blur correction mode.

Abstract: An image stabilization apparatus comprising a calculation unit that calculates a driving amount for moving an image sensor so as to compensate for shake, an image stabilization control unit that controls image stabilization by moving the image sensor based on the calculated driving amount, a determination unit that determines whether a current state is a first state according to an image shooting state, and a control unit that controls a shift amount of a center position of image stabilization control so as to be smaller in a case where a center position of the image circle of a lens apparatus is moved from a first position to a second position and the first state is determined than in a case where the center position is moved from the first position to the second position and the first state is not determined.

Abstract: According to the present disclosure, a first guide unit is provided with a first opening portion through which light in an optical path connecting a first optical element unit and a second optical element unit passes, a second guide unit is provided with a second opening portion through which light in the optical path connecting the first optical element unit and the second optical element unit passes, the first guide unit is provided with a duct for sending air to the first optical element unit, and the air coming out from the first opening portion hits the second optical element unit via the second opening portion.

Abstract: An image stabilization apparatus comprising a calculation unit that calculates a driving amount for moving an image sensor so as to compensate for shake, an image stabilization control unit that controls image stabilization by moving the image sensor based on the calculated driving amount, a determination unit that determines whether a current state is a first state according to an image shooting state, and a control unit that controls a shift amount of a center position of image stabilization control so as to be smaller in a case where a center position of the image circle of a lens apparatus is moved from a first position to a second position and the first state is determined than in a case where the center position is moved from the first position to the second position and the first state is not determined.

Abstract: When a nip portion has a region through which a recording material passes, and a part of the region is an image heating region where an image region on the recording material passes through, and the rest of the region is a non-image heating region where a non-image region on the recording material passes through, a control portion controls heating elements corresponding to the non-image heating region, out of the plurality of heating elements, so as to maintain a control target temperature, which is set based on the amount of the image heating apparatus used.

Abstract: When a nip portion has a region through which a recording material passes, and a part of the region is an image heating region where an image region on the recording material passes through, and the rest of the region is a non-image heating region where a non-image region on the recording material passes through, a control portion controls heating elements corresponding to the non-image heating region, out of the plurality of heating elements, so as to maintain a control target temperature, which is set based on the amount of the image heating apparatus used.

Abstract: According to the present disclosure, a first guide unit is provided with a first opening portion through which light in an optical path connecting a first optical element unit and a second optical element unit passes, a second guide unit is provided with a second opening portion through which light in the optical path connecting the first optical element unit and the second optical element unit passes, the first guide unit is provided with a duct for sending air to the first optical element unit, and the air coming out from the first opening portion hits the second optical element unit via the second opening portion.

Abstract: According to the present disclosure, a first guide unit is provided with a first opening portion through which light in an optical path connecting a first optical element unit and a second optical element unit passes, a second guide unit is provided with a second opening portion through which light in the optical path connecting the first optical element unit and the second optical element unit passes, the first guide unit is provided with a duct for sending air to the first optical element unit, and the air coming out from the first opening portion hits the second optical element unit via the second opening portion.

Abstract: A fixing device includes a cylindrical rotatable heating member; a nip-forming member having a first surface and a second surface opposite from the first surface and contacting an inner surface of the rotatable heating member at the first surface; a supporting member having a supporting surface, contacting the second surface, for supporting the nip-forming member; and a pressing member for forming a nip in cooperation with the nip-forming member though the rotatable heating member. A recording material on which an image is formed is heated at the nip while being feed through the nip, and the image is fixed on the recording material. The supporting surface of the supporting member supports the second surface of the nip-forming member so that the nip-forming member is swingable relative to the supporting member about an axis substantially parallel with a rotational axis of the cylindrical rotatable heating member.

Abstract: According to the present disclosure, a first guide unit is provided with a first opening portion through which light in an optical path connecting a first optical element unit and a second optical element unit passes, a second guide unit is provided with a second opening portion through which light in the optical path connecting the first optical element unit and the second optical element unit passes, the first guide unit is provided with a duct for sending air to the first optical element unit, and the air coming out from the first opening portion hits the second optical element unit via the second opening portion.

Abstract: A positional relationship between a photosensitive drum and an intermediate transfer belt during a period from the start of the driving of the photosensitive drum to the start of image formation, or during a period of the end of the image formation to the stop of the driving of the photosensitive drum enters a separating state in a case where the image formation is executed when the process speed is a first speed, and enters a contacting state in a case where the image formation is executed when the process speed is a second speed.

Abstract: An image forming apparatus includes an image bearing member, a charging member, a developing member, a transfer unit, a pre-charging exposure unit, a voltage receiving member, a measuring portion, and a controller for determining a light quantity of the pre-charging exposure unit during image formation. The controller includes, a light quantity controller for controlling the light quantity so that the image bearing member charged by applying a first potential to the charging member is exposed to light at a first light quantity by the pre-charging exposure unit, and an acquiring portion for acquiring an output of the measuring portion when the image bearing member exposed to light at the first light quantity is charged by applying a second potential of an opposite polarity to a polarity of the first potential to the voltage receiving member.

Abstract: An image forming apparatus includes a potential detection portion that determines a surface potential of an image bearing member on the basis of an applied voltage value of a detection voltage applied to a voltage application member by a voltage application portion and a detected current value detected by a current detection portion in response to the applied voltage, and a control unit that sets an image formation condition for performing image formation in order to form a toner image on the image bearing member on the basis of the surface potential determined by the potential detection portion. When the surface potential is determined by the potential detection portion, the voltage application portion applies the detection voltage after applying, to the voltage application member, a voltage having an opposite polarity to an image formation voltage that is applied to the voltage application member during image formation.

Abstract: A fixing device includes a cylindrical rotatable heating member; a nip-forming member having a first surface and a second surface opposite from the first surface and contacting an inner surface of the rotatable heating member at the first surface; a supporting member having a supporting surface, contacting the second surface, for supporting the nip-forming member; and a pressing member for forming a nip in cooperation with the nip-forming member though the rotatable heating member. A recording material on which an image is formed is heated at the nip while being feed through the nip, and the image is fixed on the recording material. The supporting surface of the supporting member supports the second surface of the nip-forming member so that the nip-forming member is swingable relative to the supporting member about an axis substantially parallel with a rotational axis of the cylindrical rotatable heating member.

Abstract: An image heating apparatus for heating an image formed on a recording material includes: a cylindrical rotatable member including a base layer and an electroconductive layer; a core inserted into the rotatable member; and a coil wound helically around the core inside the rotatable member, wherein an AC magnetic field is formed by passing an AC current through the coil to generate heat in the electroconductive layer through electromagnetic induction heating. The base layer has a volume resistivity higher than a volume resistivity of the base layer. The electroconductive layer generates heat through a full circumference thereof by a current flowing in a circumferential direction of the rotatable member independently of rotation of the rotatable member.

Abstract: Voltages are applied to an image bearing member using at least three application voltage values which are larger than a discharge start voltage value and which have different magnitudes, at least one of the application voltage values having a value at which a direction of a current corresponding to the one of the application voltage values is reverse to those of currents corresponding to the other application voltage values. A relation between the application voltage value and the detection current value in a discharge area is calculated based on at least three application voltage values Vd1, Vd2, Vd3 and at least three detection current values Id1, Id2, Id3 detected by a current detection portion in relation to at least three application voltage values Vd1, Vd2, Vd3 and a voltage value V0 at which the detection current value is zero is calculated based on the relation in the discharge area.

Abstract: A positional relationship between a photosensitive drum and an intermediate transfer belt during a period from the start of the driving of the photosensitive drum to the start of image formation, or during a period of the end of the image formation to the stop of the driving of the photosensitive drum enters a separating state in a case where the image formation is executed when the process speed is a first speed, and enters a contacting state in a case where the image formation is executed when the process speed is a second speed.

Abstract: An image forming apparatus includes an image bearing member, a charging member, a developing member, a transfer unit, a pre-charging exposure unit, a voltage receiving member, a measuring portion, and a controller for determinating a light quantity of the pre-charging exposure unit during image formation. The controller includes, a light quantity controller for controlling the light quantity so that the image bearing member charged by applying a first potential to the charging member is exposed to light at a first light quantity by the pre-charging exposure unit, and an acquiring portion for acquiring an output of the measuring portion when the image bearing member exposed to light at the first light quantity is charged by applying a second potential of an opposite polarity to a polarity of the first potential to the voltage receiving member.

Abstract: Voltages are applied to an image bearing member using at least three application voltage values which are larger than a discharge start voltage value and which have different magnitudes, at least one of the application voltage values having a value at which a direction of a current corresponding to the one of the application voltage values is reverse to those of currents corresponding to the other application voltage values. A relation between the application voltage value and the detection current value in a discharge area is calculated based on at least three application voltage values Vd1, Vd2, Vd3 and at least three detection current values Id1, Id2, Id3 detected by a current detection portion in relation to at least three application voltage values Vd1, Vd2, Vd3 and a voltage value V0 at which the detection current value is zero is calculated based on the relation in the discharge area.