18300317. FIXING DEVICE simplified abstract (CANON KABUSHIKI KAISHA)

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FIXING DEVICE

Organization Name

CANON KABUSHIKI KAISHA

Inventor(s)

SUGURU Takeuchi of Chiba (JP)

RYO Yashiro of Tokyo (JP)

MASAYUKI Tamaki of Chiba (JP)

SHINSUKE Takahashi of Chiba (JP)

FIXING DEVICE - A simplified explanation of the abstract

This abstract first appeared for US patent application 18300317 titled 'FIXING DEVICE

Simplified Explanation

The patent application describes a fixing device that includes a rotating belt with a lubricated inner surface, a heater, a rotating member, and a nip forming member. The nip forming member has a holding portion, an upstream sliding portion, and a downstream sliding portion. The downstream sliding portion has a curved shape and is designed to slide with the inner surface of the belt. The ratio of the curvature radius of the second sliding surface to the force applied to the belt is between 5 (mm/N) and 80 (mm/N).

  • The fixing device includes an endless and rotatable belt with a lubricated inner surface.
  • The device has a heater to provide heat for fixing.
  • A rotating member is used to rotate and contact the belt.
  • The nip forming member includes a holding portion, an upstream sliding portion, and a downstream sliding portion.
  • The downstream sliding portion has a curved shape and is in contact with the inner surface of the belt.
  • The ratio of the curvature radius of the second sliding surface to the force applied to the belt is between 5 (mm/N) and 80 (mm/N).

Potential Applications

  • This fixing device can be used in printers, copiers, and other imaging devices that require heat-based fixing.
  • It can also be applied in industrial settings where heat-based fixing is needed for various materials.

Problems Solved

  • The curved shape of the second sliding surface helps to evenly distribute the force applied to the belt, reducing wear and tear.
  • The lubricated inner surface of the belt ensures smooth rotation and prevents sticking or jamming.
  • The design of the nip forming member allows for efficient heat transfer and uniform fixing of the printed or copied material.

Benefits

  • The fixing device provides improved durability and longevity due to reduced wear on the belt.
  • The smooth rotation of the belt and efficient heat transfer result in high-quality and consistent fixing of printed or copied materials.
  • The design allows for easy maintenance and replacement of the belt and nip forming member.


Original Abstract Submitted

A fixing device includes an endless and rotatable belt of which an inner peripheral surface is applied with lubricant, a heater, a rotatable member to rotatably contact the belt and a nip forming member in contact with the inner peripheral surface of the belt. The nip forming member includes a holding portion, an upstream sliding portion and a downstream sliding portion. The downstream and upstream sliding portions have first and second sliding surfaces sliding with the inner peripheral surface of the belt, respectively. The second sliding surface has a curved shape, and when a force applied to the belt with respect to a length of the second sliding surface is defined as w (N/mm) and a curvature radius of the second sliding surface is defined as R (mm), R/w of the second sliding surface is equal to 5 (mm/N) or larger and equal to 80 (mm/N) or less.

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