摘要:
A fixing device for thermally fixing a developing agent image to a sheet includes: a flexible tubular member having an inner peripheral surface and circularly moving in a moving direction while the developing agent image is thermally fixed; a heater; a nip member being in sliding contact with the tubular member; a backup member nipping the tubular member in cooperation with the nip member; a stay covering the heater and supporting the nip member; an electric component positioned opposite to the heater with respect to the stay; and a frame supporting the electric component. The frame includes: an isolating portion interposed between the tubular member and the electric component for isolating the electric component from the tubular member; and a guide portion guiding the inner peripheral surface of the tubular member while the flexible tubular member is moving in the moving direction.
摘要:
A fixing device includes: a first fixing member and a second fixing member forming a nip portion for heat-fixing a recording sheet; an urging mechanism including an urging member and urging the first fixing member toward the second fixing member by an urging force of the urging member; a first frame for supporting the second fixing member; a second frame arranged at an opposite side to the second fixing member with the first fixing member being interposed therebetween; and a switching member, which applies a pressing force resisting the urging force to the first fixing member for switching a width of the nip portion, and which includes a cam to which the urging force is applied and a shaft for supporting the cam. The first frame and the second frame are connected to each other by the shaft.
摘要:
A fuser unit includes: a cylindrical member; a heat generator; a nip member; a backup member, which configures a nip part between the cylindrical member and the backup member with the cylindrical member; a conductive member, which is arranged to cover the heat generator at the inside of the cylindrical member; a temperature detection unit; a wiring; a first frame having insulation, which is arranged at an opposite side to the heat generator with respect to the conductive member being interposed therebetween at the inside of the cylindrical member, and which extends along the conductive member; and a second frame, which is arranged at an opposite side to the conductive member with respect to the first frame being interposed therebetween at the inside of the cylindrical member, and which extends along the first frame, wherein the wiring is arranged between the first frame and the second frame.
摘要:
A fixing device configured to heat-fix a developer image on a recording sheet, the fixing device includes: a flexible cylindrical member; a nip member configured to slidingly contact an inner peripheral surface of the cylindrical member; a heating member that is arranged at an inside of the cylindrical member and is configured to heat the nip member; a stay configured to support the nip member with surrounding the heating member; a backup member configured to interpose the cylindrical member between the nip member and the backup member; a cover member that is arranged at the inside of the cylindrical member and is configured to cover the stay from an opposite side to the heating member; and a first support member configured to support the cover member and form a gap between the stay and the cover member.
摘要:
A fixing device for thermally fixing a developing agent image to a sheet includes: a flexible tubular member having an inner peripheral surface defining an internal space; a heater; a nip member being in sliding contact with the inner peripheral surface of the flexible tubular member and having an electrically conductive surface; a stay supporting the nip member and being electrically conductive and electrically connected to the electrically conductive surface; a backup member nipping the flexible tubular member in cooperation with the nip member; a supporting member supporting the nip member and the stay, the supporting member being movable relative to the backup member; and a first grounding member disposed to be in contact with the stay for grounding the stay, the first grounding member being supported to the supporting member such that the first grounding member is integrally movable with the supporting member.
摘要:
A fixing device configured to heat-fix a developer image on a recording sheet, the fixing device includes: a flexible cylindrical member; a nip member configured to slidingly contact an inner peripheral surface of the cylindrical member; a heating member that is arranged at an inside of the cylindrical member and is configured to heat the nip member; a stay configured to support the nip member with surrounding the heating member; a backup member configured to interpose the cylindrical member between the nip member and the backup member; a cover member that is arranged at the inside of the cylindrical member and is configured to cover the stay from an opposite side to the heating member; and a first support member configured to support the cover member and form a gap between the stay and the cover member.
摘要:
A fixing device may include first and second fixing members arranged to form a nip portion, an urging member that provides an urging force to urge the first fixing member toward the second fixing member, a change member configured to change a width of the nip portion from a first nip width to a second nip width by applying a pressing force to the first fixing member against the urging force of the urging member and change the width of the nip portion from the second nip width to the first nip width by releasing the pressing force, and a restriction portion configured to restrict movement of the first fixing member and restrict a maximum value of the first nip width of the nip portion while the pressing force against the urging force is released.
摘要:
A fuser unit may include a cylindrical member, a heat generator, a nip member, and a backup member. A nip part may be defined between the cylindrical member and the backup member. The fuser unit may further include a conductive member, arranged to cover the heat generator at the inside of the cylindrical member, a temperature detection unit, a wiring, a first frame having insulation, arranged at an opposite side to the heat generator with respect to the conductive member being interposed therebetween at the inside of the cylindrical member, and which extends along the conductive member, and a second frame, arranged at an opposite side to the conductive member with respect to the first frame being interposed therebetween at the inside of the cylindrical member, and which extends along the first frame, wherein the wiring is arranged between the first frame and the second frame.
摘要:
A fuser unit includes: a cylindrical member having flexibility; a heat generator, which is arranged at the inside of the cylindrical member; a plate-shaped nip member, which is arranged to slidingly contact an inner peripheral surface of the cylindrical member and receives radiation heat from the heat generator; a backup member, which is configured to configure a nip part between the cylindrical member and the backup member with the cylindrical member, by nipping between the backup member and the nip member; a temperature detection unit, which is arranged to face an opposite surface that is opposite to the surface of the nip member slidingly contacting the cylindrical member at the inside of the cylindrical member and detects a temperature of the nip member, and an urging member that urges the temperature detection unit toward the nip member.
摘要:
A fixing device for thermally fixing a developing agent image to a sheet includes: a flexible tubular member having an inner peripheral surface, the tubular member defining an axis extending in an axial direction and having widthwise end portions in the axial direction; a heater; a nip member being in sliding contact with the inner peripheral surface; a backup member confronting the nip member to nip the tubular member in cooperation with the nip member; a stay supporting the nip member; a pair of inner guides being in sliding contact with the inner peripheral surface to guide the same; and a pair of restricting members restricting the widthwise end portions of the tubular member from moving in the axial direction, at least one of the pair of restricting members being formed separately from the inner guides and being assembled to the stay in a direction perpendicular to the axial direction.