摘要:
A developing unit includes a housing, a developing roller and a seal contacting an outer peripheral surface of the developing roller. The seal includes a first part disposed inward in an axial line direction of the developing roller and contacting the outer peripheral surface of the developing roller, and a second part contacting an outer edge of the first part in the axial line direction and disposed outward from the first part in the axial line direction and contacting the outer peripheral surface. The first part has a contact surface contacting the developing roller and a plurality of first grooves each of which is recessed from the contact surface and extends along the contact surface. The plurality of first grooves extends from outward to inward in the axial line direction, as the plurality of first grooves extends from upstream to downstream in a rotational direction of the developing roller.
摘要:
A developing unit includes a housing, a developing roller and a seal contacting an outer peripheral surface of the developing roller. The seal includes a first part disposed inward in an axial line direction of the developing roller and contacting the outer peripheral surface of the developing roller, and a second part contacting an outer edge of the first part in the axial line direction and disposed outward from the first part in the axial line direction and contacting the outer peripheral surface. The first part has a contact surface contacting the developing roller and a plurality of first grooves each of which is recessed from the contact surface and extends along the contact surface. The plurality of first grooves extends from outward to inward in the axial line direction, as the plurality of first grooves extends from upstream to downstream in a rotational direction of the developing roller.
摘要:
In a developing apparatus, a sealing member has a first part contacting an axial end part of a developing roller and a second part including a first side surface. A roller body of a supply roller includes a contact surface that contacts the peripheral surface, and a second side surface located at an end of the contact surface in the axial direction. The restricting member has a one side and another side. The one side is opposed to the second side surface in the axial direction. The another side is opposed to the first side surface in the axial direction with a gap. The gap is communicated with an interior space of a developer accommodating frame such that the developer is capable of moving away from a nip position between the supply roller and the developing roller toward the bottom wall of the developing frame in the gap.
摘要:
A developing device includes: an agitation member including an agitation film; and a housing including a first frame and a second frame jointed to the first frame. The second frame includes: a first contact part configured to contact the agitation film, and a second contact part configured to contact the agitation film, arranged at a downstream side of the first contact part, the second contact part protruding towards the first frame. A first distance from the rotational axis line to the first contact part, as seen from a direction of the rotational axis line, is gradually increased towards a downstream side with respect to the rotating direction. A second distance from the rotational axis line to the second contact part is equal to or greater than a maximum distance from the rotational axis line to the first contact part.
摘要:
A developing device includes: an agitation member including an agitation film; and a housing including a first frame and a second frame jointed to the first frame. The second frame includes: a first contact part configured to contact the agitation film, and a second contact part configured to contact the agitation film, arranged at a downstream side of the first contact part, the second contact part protruding towards the first frame. A first distance from the rotational axis line to the first contact part, as seen from a direction of the rotational axis line, is gradually increased towards a downstream side with respect to the rotating direction. A second distance from the rotational axis line to the second contact part is equal to or greater than a maximum distance from the rotational axis line to the first contact part.
摘要:
A developing device includes a frame, a developing roller, and first and second seals. The frame has a seal adhesion surface and a seal placement portion. The first seal is provided between the frame and a peripheral surface at an end portion of the developing roller. The second seal is in contact with the peripheral surface and has an end region positioned between the first seal and the peripheral surface. The second seal has a first end portion and a second end portion. The first end portion is adhered to the seal adhesion surface and has an end part adhered onto the first seal. The second end portion is in contact with the peripheral surface of the developing roller. The first seal is compressed in the seal placement portion by the second seal to abut on a stepped portion of the seal placement portion.
摘要:
A developing device includes a casing configured to store a developing agent and a developing agent carrier configured to carry the developing agent in the casing. The developing agent carrier is configured to rotate about an axis extending in a first direction. The developing device further includes a layer-thickness regulating member configured to regulate a thickness of a layer of the developing agent carried on the developing agent carrier and a first seal member disposed between the layer-thickness regulating blade and the casing. The first seal member extends along the first direction. The casing includes a first regulating portion configured to regulate a movement of the first seal member in the first direction by contacting a surface of the first seal member non-parallel to the first direction. The first regulating portion may include protrusions and/or indentations to regulate the movement of the first seal member.
摘要:
A developing device includes a frame, a developing roller, and first and second seals. The frame has a seal adhesion surface and a seal placement portion. The first seal is provided between the frame and a peripheral surface at end portion of the developing roller. The second seal is in contact with the peripheral surface and has an end region positioned between the first seal and the peripheral surface. The second seal has a first end portion and a second end portion. The first end portion is adhered to the seal adhesion surface and has an end part adhered onto the first seal. The second end portion is in contact with the peripheral surface of the developing roller. The first seal is compressed in the seal placement portion by the second seal to abut on a stepped portion of the seal placement portion.
摘要:
A developing device includes a casing configured to store a developing agent and a developing agent carrier configured to carry the developing agent in the casing. The developing agent carrier is configured to rotate about an axis extending in a first direction. The developing device further includes a layer-thickness regulating member configured to regulate a thickness of a layer of the developing agent carried on the developing agent carrier and a first seal member disposed between the layer-thickness regulating blade and the casing. The first seal member extends along the first direction. The casing includes a first regulating portion configured to regulate a movement of the first seal member in the first direction by contacting a surface of the first seal member non-parallel to the first direction. The first regulating portion may include protrusions and/or indentations to regulate the movement of the first seal member.
摘要:
A developing cartridge includes a housing configured to accommodate a developing agent and including a first frame and a second frame, a developing agent carrying member rotatable on an axial line and configured to carry the developing agent, and a layer thickness regulating member configured to regulate a layer thickness of the developing agent carried by the developing agent carrying member. The first frame has a first facing surface facing the layer thickness regulating member. The second frame has a second facing surface facing the layer thickness regulating member. A welded region where the first frame and the second frame are welded and include a first welded portion extending from the first facing surface in a first direction intersecting with and away from the first facing surface, and a second welded portion extending from the first welded portion inward in a second direction intersecting with the first direction.