Fixing device and image forming apparatus
一种设备、图像的技术，应用在定影设备,图像形成装置领域，能够解决图像脱漏、图像透背等问题
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Problems solved by technology
Method used
Image
Examples
no. 1 approach
[0020] figure 1 is a diagram illustrating a schematic configuration of a fixing device according to an embodiment. A recording medium P on which an image composed of resin particles (hereinafter referred to as "unfixed toner image T") is formed by an image forming unit not shown is conveyed to the fixing device 100 according to the first embodiment.
[0021] The fixing device 100 includes a fixing portion 105 and an anti-sticking agent applying device 150 configured to apply an anti-sticking agent to the fixed toner image T′ after the unfixed toner image T is fixed to the recording medium P. The section 105 includes: a bubble fixer generator 110 configured to generate a fixer (liquid fixer) L in a foam state (hereinafter also referred to as “bubble fixer”); an application roller 120 configured to carry the bubble fixer L' generated by the bubble fixer generator 110 to apply the bubble fixer L' to the unfixed toner image T on the recording medium; the blade 130 configured to c...
no. 2 approach
[0038] figure 2 is a diagram illustrating a schematic configuration of a fixing device according to a second embodiment. according to figure 2 The fixing device 100 of the illustrated second embodiment includes a spray-type anti-sticking agent applying device 150 . In this configuration, the anti-sticking agent supplied from the anti-sticking agent tank not shown is ejected from the anti-sticking agent nozzle 156, thereby applying the anti-sticking agent in mist form to the fixed toner image T on the recording medium. '.
[0039] Next, the formulation of the liquid state fixer is described. As described above, the fixer in a foam state is formed by introducing air bubbles into a liquid fixer containing a softener. It is preferable that the softener-containing liquid fixing agent contains a foaming agent and a foam accelerator to form a foamy fixing agent having uniformly sized cells in its cell layer. In addition, it is preferable that the softener-containing liquid fix...
no. 3 approach
[0059] Figure 5 is a diagram illustrating a schematic configuration of a fixing device according to a third embodiment. Such as Figure 5 As shown, according to the fixing device 100' of the third embodiment and figure 1 The fixing device 100 shown is different in that the fixing device 100' according to the third embodiment includes a pressure belt 140' instead of the pressure roller 140 as a pressure member configured to be fed to the coating roller 120 and positioned to face the pressure member. The recording medium P in the nip between the pressure belt 140' on the side of the coating roller 120 applies pressure, and the configuration other than having the pressure belt 140' remains the same as figure 1 The fixing device 100 is the same. Under this configuration, the fixing device 100' according to the third embodiment can easily widen the nip width of the pressure applying portion. Preferable examples of the pressure belt 140' include, but are not limited to, belts o...
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