摘要:
An electrophotographic photosensitive drum supporting apparatus for rotatably supporting a photosensitive drum includes a first supporting member having a first hole for supporting one end of the drum, and first and second surfaces on one side and the other side of the first supporting member relative to an imaginary plane passing through the axis of the drum, respectively. The first and second surfaces are inclined with respect to the plane so as to contact with the drum and are provided on the inner surface of the first hole. The apparatus also includes a second supporting member having a second hole for supporting the other end of the drum, and a third and a fourth surfaces on one side and the other side of the second supporting member relative to the plane, respectively. The third and fourth surfaces are inclined with respect to the plane so as to contact with the drum and are provided on the inner surface of the second hole. The apparatus also includes a plurality of process members provided in contact with the drum. The direction of the resultant force of a force acting on the drum by the plurality of process members is a direction in which the drum is urged against the first and second inclined surfaces and against the third and fourth inclined surfaces.
摘要:
An electrophotographic photosensitive drum supporting apparatus for rotatably supporting a photosensitive drum, the supporting apparatus having a first supporting member having a first hole for supporting one end of the drum, and a first and a second surfaces on one side and the other side relative to an imaginary plane passing through the axis of the drum, respectively, the first and second surfaces inclined with respect to the plane so as to contact with the drum and provided on the inner surface of the first hole, a second supporting member having a second hole for supporting the other end of the drum, and a third and a fourth surfaces on one side and the other side relative to the plane, respectively, the third and fourth surfaces inclined with respect to the plane so as to contact with the drum and provided on the inner surface of the second hole, and a plurality of process members provided in contact with the drum, wherein the direction of the resultant force of a force acting on the drum by the plurality of process members is a direction in which the drum is urged against the first and second inclined surfaces and against the third and fourth inclined surfaces.
摘要:
An electrophotographic photosensitive drum supporting apparatus for rotatably supporting a photosensitive drum includes a first supporting member having a first hole for supporting one end of the drum, and first and second surfaces on one side and the other side of the first supporting member relative to an imaginary plane passing through the axis of the drum, respectively. The first and second surfaces are inclined with respect to the plane so as to contact with the drum and are provided on the inner surface of the first hole. The apparatus also includes a second supporting member having a second hole for supporting the other end of the drum, and a third and a fourth surfaces on one side and the other side of the second supporting member relative to the plane, respectively. The third and fourth surfaces are inclined with respect to the plane so as to contact with the drum and are provided on the inner surface of the second hole. The apparatus also includes a plurality of process members provided in contact with the drum. The direction of the resultant force of a force acting on the drum by the plurality of process members is a direction in which the drum is urged against the first and second inclined surfaces and against the third and fourth inclined surfaces.
摘要:
A cleaning device used in an electrophotographic image forming apparatus includes a frame, an elastic blade contacting an electrophotographic photosensitive drum to remove a developer remaining thereon, a blade supporting member, and a removed developer containing portion containing the developer removed from the drum by the blade. The supporting member includes: a supporting portion attached to the frame for supporting the blade; a first bent portion bent from the supporting portion to an opposite side to an attachment surface where the supporting portion is attached to the frame; a connecting portion extending from the first bent portion to the opposite side in the orthogonal direction; a second bent portion bent from the connecting portion in the orthogonal direction and in a lateral direction of the supporting portion; and an extension portion extending from the second bent portion, in the orthogonal direction and in the lateral direction.
摘要:
An electrophotographic photosensitive drum usable with an electrophotographic image forming apparatus, includes a non-circular twisted projection having a cross-section with a plurality of corner portions, non-circular twisted projection being provided at one longitudinal end of the electrophotographic photosensitive drum, and being engageable with a non-circular twisted hole having a section with a plurality of corner portions, the non-circular twisted hole being disposed at a central portion of a driving rotatable member of a main assembly of the image forming apparatus; and a second electroconductive member contactable with a first electroconductive member electrically connected with a main assembly of the image forming apparatus, the first electroconductive member being disposed in the hole to provide a grounding of the electrophotographic photosensitive drum, the second electroconductive member being provided on the projection and being electrically connected with the electrophotographic photosensitive drum, wherein a contact position between the second electroconductive member and the first electroconductive member moves in interrelation with the projection being retracted toward the hole by rotation of the driving rotatable member when the projection is engaged with the projection.
摘要:
An electrophotographic photosensitive drum supporting apparatus for rotatably supporting a photosensitive drum includes a first supporting member having a first hole for supporting one end of the drum, and first and second surfaces on one side and the other side of the first supporting member relative to an imaginary plane passing through the axis of the drum, respectively. The first and second surfaces are inclined with respect to the plane so as to contact with the drum and are provided on the inner surface of the first hole. The apparatus also includes a second supporting member having a second hole for supporting the other end of the drum, and a third and a fourth surfaces on one side and the other side of the second supporting member relative to the plane, respectively. The third and fourth surfaces are inclined with respect to the plane so as to contact with the drum and are provided on the inner surface of the second hole. The apparatus also includes a plurality of process members provided in contact with the drum. The direction of the resultant force of a force acting on the drum by the plurality of process members is a direction in which the drum is urged against the first and second inclined surfaces and against the third and fourth inclined surfaces.
摘要:
An electrophotographic photosensitive drum usable with an electrophotographic image forming apparatus, includes a non-circular twisted projection having a cross-section with a plurality of corner portions, a non-circular twisted projection being provided at one longitudinal end of the drum, and being engageable with a non-circular twisted hole having a section with a plurality of corner portions, the non-circular twisted hole being disposed at a central portion of a driving rotatable member of a main assembly of the image forming apparatus; and a second electroconductive member contactable with a first electroconductive member electrically connected with a main assembly of the image forming apparatus. The first electroconductive member is disposed in the hole to ground the drum. The second electroconductive member is provided on the projection and is electrically connected with the drum. The contact position between the first and second electroconductive members moves in interrelation with the projection being retracted toward the hole by rotation of the driving rotatable member when the projection is engaged with the projection.
摘要:
An electrophotographic photosensitive drum usable with an electrophotographic image forming apparatus, includes a non-circular twisted projection provided at one longitudinal end of the drum, and engageable with a non-circular twisted hole being disposed at a central portion of a driving rotatable member of a main assembly of the image forming apparatus, and an electroconductive member provided on the projection, electrically connected to the drum, and contactable with an electroconductive member electrically connected with a main assembly of the image forming apparatus and disposed in the hole to ground the drum. The contact position between the electroconductive members moves in interrelation with the projection being moved toward the hole by rotation of the driving rotatable member when the projection is engaged with the hole.
摘要:
An electrophotographic photosensitive drum includes a non-circular twisted projection, provided at one longitudinal end of the drum, having a cross-section with a plurality of corner portions, and being engageable with a non-circular twisted hole located at a central portion of a driving rotatable member of a main assembly of an image forming apparatus and has a cross-section with a plurality of corner portions; and a second electroconductive member contactable with a first electroconductive member electrically connected with the main assembly of the image forming apparatus. The first electroconductive member is disposed in the hole to ground the drum. The second electroconductive member is provided on the projection and electrically connected with the drum. The contact position between the first and second electroconductive members moves in interrelation with the projection being retracted toward the hole by rotation of the driving rotatable member when the projection is engaged with the hole.
摘要:
A cleaning device to be used in an electrophtographic image forming apparatus, the cleaning device including a frame, an elastic blade elastically contacting an electrophotographic photosensitive drum to remove a developer remaining thereon, a supporting member for supporting the blade, and a removed developer containing portion for containing therein the developer removed from the drum by the blade. The supporting member includes: a supporting portion attached to the frame for supporting the blade; a first bent portion bent from the supporting portion to an opposite side to an attachment surface where the supporting portion is attached to the frame, in an orthogonal direction to the supporting portion; a connecting portion extending from the first bent portion to the opposite side in the orthogonal direction; a second bent portion bent from the connecting portion to a side opposite to a blade side, in the orthogonal direction and in a lateral direction of the supporting portion; and an extension portion extending from the second bent portion to the side opposite to the blade side, in the orthogonal direction and in the lateral direction. A part of the containing portion is constituted by the blade and the supporting member.