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CN-113448218-B - Pressurizing device and pressurizing treatment device using the same

CN113448218BCN 113448218 BCN113448218 BCN 113448218BCN-113448218-B

Abstract

The present invention provides a pressurizing device and a pressurizing treatment device using the same, which can restrain the variation of the contact pressure distribution in the contact area between the pressurizing elements of the paired structure even if the pressurizing elements generate the driving reaction force when the pressurizing elements of the paired structure capable of contacting and separating are driven. The pressing device includes a first pressing element, a second pressing element, a contact/separation means for bringing the second pressing element into contact with and separating from the first pressing element between a contact position and a retracted position, a biasing means for biasing the first pressing element toward the second pressing element, and a driving means for applying a driving force to the second pressing element to thereby drive the first pressing element, wherein the contact/separation means has a moving element for moving the second pressing element toward the first pressing element, and the driving means applies the driving force in a direction in which the second pressing element is pressed toward the moving element.

Inventors

  • KANAI KENJI

Assignees

  • 富士胶片商业创新有限公司

Dates

Publication Date
20260505
Application Date
20200724
Priority Date
20200327

Claims (12)

  1. 1. A pressurizing device, characterized by comprising: a first pressing member that is disposed so as to be capable of being retracted with respect to a predetermined initial position; A second pressurizing element provided opposite to the first pressurizing element, for pressurizing the medium between the second pressurizing element and the first pressurizing element; A contact/separation member that makes/separates the second pressing member between a contact position and a retracted position with respect to the first pressing member located at the initial position; A biasing member for biasing the first pressing member located at the initial position toward the second pressing member when the second pressing member is located at the contact position, and A driving member that imparts a driving force to the second pressing member, and that causes the first pressing member to be driven when the second pressing member is located at the contact position, The contact/separation means has a moving member provided on a side of the second pressing member opposite to a contact area of the first pressing member and the second pressing member, to move the second pressing member toward the first pressing member side, The driving member imparts the driving force in a direction in which the second pressing member is pressed toward the moving member side.
  2. 2. A pressurizing device according to claim 1, wherein, The first pressurizing element is heated by a heating source.
  3. 3. A pressurizing device according to claim 2, wherein, The first pressing element includes a heating source, an endless belt member, and an opposing member 2c, and the endless belt member is heated by the heating source, and the opposing member is provided on a back surface of the belt member opposing the second pressing element.
  4. 4. A pressurizing device according to any one of claims 1 to 3, wherein, The urging member gives an elastic urging force by compression deformation to the first pressing element.
  5. 5. A pressurizing device according to claim 4, wherein, The first pressing member is capable of retracting within a range smaller than the contact/separation amount of the second pressing member.
  6. 6. A pressurizing device according to any one of claims 1 to 5, wherein, The moving element of the contact/separation means has a swinging member configured to be swingable about a swinging fulcrum, the second pressing element being moved to contact/separate at a supported portion of the second pressing element, and a displacement member that displaces the swinging member so as to swing within a predetermined range.
  7. 7. A pressurizing device as set forth in claim 6, wherein, The displacement member is an eccentric rotary member.
  8. 8. A pressurizing device as set forth in claim 7, wherein, The swing member has a cam follower at a contact portion with the eccentric rotation member.
  9. 9. The pressurizing device according to any one of claims 1 to 8, wherein, The driving force application point of the driving means to the second pressing element is located on the upstream side in the rotation direction of the second pressing element than the supporting point of the moving element of the contact/separation means to the second pressing element, and is located on the downstream side in the rotation direction of the second pressing element than the contact area of the first pressing element and the second pressing element.
  10. 10. A pressurizing device according to claim 9, wherein, The driving means has a drive transmission system at a drive force application point to the second pressing element, the drive transmission system giving a driving force in a direction to move the second pressing element away from the contact area.
  11. 11. A pressurizing device according to claim 10, wherein, The moving element of the contact/separation means has a swing member configured swingably about a swing fulcrum, and moves the second pressing element to contact/separate it at a supported portion of the second pressing element, The swing fulcrum of the swing member is provided coaxially with a drive fulcrum of the drive means.
  12. 12. A pressure treatment apparatus, comprising: A processing member for imparting a pressurized object to the medium, and The pressurizing device according to any one of claims 1 to 11, which pressurizes an object to be pressurized on the medium.

Description

Pressurizing device and pressurizing treatment device using the same Technical Field The present invention relates to a pressurizing device and a pressurizing device using the same. Background Conventionally, as such a pressurizing device, for example, a device described in patent document 1 is known. Patent document 1 discloses a fixing device including a heating portion including a pressing member on an inner surface of an endless belt heated by a heating source, and a pressing portion including a roller member that receives a medium between the endless belt and the pressing member, a pressing mechanism that presses the roller member, and a moving mechanism that moves a position of the roller member to change a pressing force distribution of a nip region that sandwiches the medium. [ Prior Art literature ] [ Patent literature ] Patent document 1 Japanese patent laid-open publication No. 2013-186304 (detailed description, FIG. 4) Disclosure of Invention [ Problem to be solved by the invention ] The present invention has been made to solve the above-described problems, and an object thereof is to provide a pressing device capable of suppressing a fluctuation in contact pressure distribution in a contact area between pressing elements of a pair structure when the pressing elements of the pair structure are driven by being brought into contact with each other, even if a driving reaction force is generated by the pressing elements, and a pressing treatment device using the pressing device. [ Means of solving the problems ] The invention according to claim 1 is a pressurizing device comprising a first pressurizing element, a second pressurizing element provided opposite to the first pressurizing element and pressurizing by sandwiching a medium between the second pressurizing element and the first pressurizing element, a contact/separation means for bringing the second pressurizing element into contact with and separating from the first pressurizing element between a contact position and a retracted position, a biasing means for biasing the first pressurizing element toward the second pressurizing element when the second pressurizing element is positioned at the contact position, and a driving means for biasing the second pressurizing element, wherein the first pressurizing element is driven when the second pressurizing element is positioned at the contact position, and the contact/separation means has a moving element provided on a side of the second pressurizing element opposite to a contact area between the first pressurizing element and the second pressurizing element and biasing the second pressurizing element toward the first pressurizing element, and the driving means is configured to apply the driving force toward the side in which the second pressurizing element is pressed. The invention of claim 2 is the pressurizing device according to claim 1, wherein the first pressurizing member is heated by a heating source. The invention according to claim 3 is the pressurizing device according to claim 2, wherein the first pressurizing element heats the endless belt member by a heating source, and a facing member is provided on a back surface of the belt member facing the second pressurizing element. The invention of claim 4 is the pressurizing device according to any one of claims 1 to 3, wherein the urging member imparts an elastic urging force by compression deformation to the first pressurizing element. The invention of claim 5 is the pressurizing device according to claim 4, wherein the first pressurizing member is capable of retracting within a range smaller than the contact/separation amount of the second pressurizing member. The invention according to claim 6 is the pressing device according to any one of claims 1 to 5, wherein the moving element of the contact/separation means includes a swinging member configured to be swingable about a swinging fulcrum, the second pressing element being moved to be in contact with and separated from a supported portion of the second pressing element, and a displacement member configured to displace the swinging member so as to swing within a predetermined range. The invention according to claim 7 is the pressurizing device according to claim 6, wherein the displacement member is an eccentric rotation member. The invention of claim 8 is the pressing device according to claim 7, wherein the swinging member has a cam follower at a contact portion with the eccentric rotating member. The invention of claim 9 is the pressing device according to any one of claims 1 to 8, wherein a driving force application point of the driving means to the second pressing element is located on an upstream side in a rotation direction of the second pressing element than a supporting point of the moving element of the contact/separation means to the second pressing element, and is located on a downstream side in the rotation direction of the second pressing element than a contact area of the f