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US 12,181,820 B2Granted
Fixing device and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsAkinori Yokota, Osamu Sasaoka, Tsuguhiro Yoshida
Life of this patent
Estimating the term…
Abstract
A fixing device includes a cylindrical fixing member, a heater arranged in an inner space of the fixing member, a pressing member to contact the fixing member and a conductive member disposed so as to contact an inner surface of the fixing member and to conduct the fixing member to a circuit for controlling a potential of the fixing member The fixing member heats an image on a recording material to fix the image onto the recording material while nipping and conveying the recording material between the fixing member and the pressing member. The conductive member is formed of metal wire.
Claims18
A fixing device comprising:
- a cylindrical fixing member;
- a heater arranged in an inner space of the fixing member;
- a pressing member configured to contact the fixing member;
- a conductive member disposed so as to contact an inner surface of the fixing member and configured to conduct the fixing member to a circuit for controlling a potential of the fixing member;
- and
- a mounting member on which the conductive member is mounted,
- wherein the fixing member heats an image on a recording material to fix the image onto the recording material while nipping and conveying the recording material between the fixing member and the pressing member,
- wherein the conductive member is formed of metal wire,
- wherein the conductive member includes a held portion held by the mounting member and formed on an end of the metal wire, and contacting portion for contacting the inner surface of the fixing member, and
- wherein the conductive member is elastically deformed in a rotational axis direction of the fixing member by contacting the fixing member.
7 more elements
A fixing device comprising:
- a cylindrical fixing member;
- a heater arranged in an inner space of the fixing member;
- a pressing member configured to contact the fixing member;
- a conductive member disposed so as to contact an inner surface of the fixing member and configured to conduct the fixing member to a circuit for controlling a potential of the fixing member;
- and
- a mounting member on which the conductive member is mounted,
- wherein the fixing member heats an image on a recording material to fix the image onto the recording material while nipping and conveying the recording material between the fixing member and the pressing member,
- wherein the conductive member is formed of metal wire,
- wherein the conductive member includes a held portion held by the mounting member and formed on an end of the metal wire, and contacting portion for contacting the inner surface of the fixing member,
- wherein as viewed in a rotational axis direction of the fixing member, the conductive member is curved so as to draw a concave shape opened to a side of the pressing member, and
- wherein in a state in which the conductive member is not mounted on the mounting member, an open width of the conductive member with respect to a conveyance direction of the recording material in a nip portion between the fixing member and the pressing member is narrower than a width of the mounting member in the conveyance direction.
8 more elements
A fixing device comprising:
- a cylindrical fixing member;
- a heater arranged in an inner space of the fixing member;
- a pressing member configured to contact the fixing member;
- a conductive member disposed so as to contact an inner surface of the fixing member and configured to conduct the fixing member to a circuit for controlling a potential of the fixing member;
- a mounting member on which the conductive member is mounted;
- and
- a heater holder configured to hold the heater,
- wherein the fixing member heats an image on a recording material to fix the image onto the recording material while nipping and conveying the recording material between the fixing member and the pressing member,
- wherein the conductive member is formed of metal wire,
- wherein the conductive member includes a held portion held by the mounting member and formed on an end of the metal wire, and contacting portion for contacting the inner surface of the fixing member,
- wherein the mounting member is a reinforcing member configured to support the heater holder and reinforce the heater holder, and
- wherein a part of the held portion is nipped between the reinforcing member and the heater holder.
9 more elements
A fixing device comprising:
- a cylindrical fixing member;
- a heater arranged in an inner space of the fixing member;
- a pressing member configured to contact the fixing member;
- a conductive member disposed so as to contact an inner surface of the fixing member and configured to conduct the fixing member to a circuit for controlling a potential of the fixing member;
- a mounting member on which the conductive member is mounted;
- a heater holder configured to hold the heater;
- and
- a flange member mounted on an end portion of the reinforcing member with respect to a rotational axis direction of the fixing member, and configured to regulate an end portion of the fixing member,
- wherein the fixing member heats an image on a recording material to fix the image onto the recording material while nipping and conveying the recording material between the fixing member and the pressing member,
- wherein the conductive member is formed of metal wire,
- wherein the conductive member includes a held portion held by the mounting member and formed on an end of the metal wire, and contacting portion for contacting the inner surface of the fixing member,
- wherein the mounting member is a reinforcing member configured to support the heater holder and reinforce the heater holder, and
- wherein the conducting member is conducted to the circuit through a conductive portion provided on the flange member.
10 more elements
A fixing device comprising:
- a cylindrical fixing member;
- a heater arranged in an inner space of the fixing member;
- a pressing member configured to contact the fixing member;
- and
- a conductive member disposed so as to contact an inner surface of the fixing member and configured to conduct the fixing member to a circuit for controlling a potential of the fixing member,
- wherein the fixing member heats an image on a recording material to fix the image onto the recording material while nipping and conveying the recording material between the fixing member and the pressing member,
- wherein the conductive member is formed of metal wire, and
- wherein the metal wire is a steel wire of which Young's modulus is 180 GPa or more and 210 GPa or less.
5 more elements
A fixing device comprising:
- a cylindrical fixing member;
- a heater arranged in an inner space of the fixing member;
- a pressing member configured to contact the fixing member;
- and
- a conductive member disposed so as to contact an inner surface of the fixing member and configured to conduct the fixing member to a circuit for controlling a potential of the fixing member,
- wherein the fixing member heats an image on a recording material to fix the image onto the recording material while nipping and conveying the recording material between the fixing member and the pressing member,
- wherein the conductive member is formed of metal wire, and
- wherein the conductive member contacts the fixing member in a position outside of a passing through area where the recording material passes through a nip portion between the fixing member and the pressing member with respect to a rotational axis direction of the fixing member.
5 more elements
Dependencies are inferred from the claim text.