JP4722602B2 - Method of manufacturing fixing belt guide device - Google Patents

Description

  The present invention relates to a method of manufacturing a fixing belt guide device for fixing toner by applying heat and pressure to paper in a printing machine or copying machine.

  In the printing process of the laser printer, negatively static electricity is first charged on the surface of the photosensitive drum, and then laser light emitted from the laser oscillator scans the photosensitive drum to draw image data. Then, the negative static electricity disappears in the portion irradiated with the laser beam. Next, when the negatively charged toner is brought close to the photosensitive drum, the toner adheres only to the portion where the static electricity is lost. Further, when the sheet is brought into close contact with the photosensitive drum and a positive charge is applied from the back side of the sheet, the toner adheres to the sheet. Therefore, the toner is fixed by applying heat and pressure to the paper. That is, the toner is fixed through the paper between the heating roller and the fixing roller to which pressure is applied.

On the other hand, in recent years, instead of the fixing roller, a fixing belt has been used to increase the contact area (see Patent Documents 1 to 3 below).
JP-A-6-31801 JP 2005-148311 A JP 2005-148544 A JP-A-4-50883

  However, when a fixing belt is employed, since the fixing belt is an endless belt, at least two fixing belt rotation driving shafts are required at both ends of the fixing belt. When the rotary drive shaft is driven, it becomes difficult to maintain the parallelism of the fixing belt, and the fixing belt moves to one side. Therefore, in order to restrict the movement, a fixing belt guide device that engages with the rotation drive shaft is required.

Hereinafter, this point will be described in detail.
FIG. 8 is a schematic view of a fixing device for fixing toner by applying heat and pressure to paper in a conventional printing machine or copying machine.
As shown in FIG. 8, a heating roller 100 provided with a heat-resistant release layer 103 made of, for example, Teflon (registered trademark) is provided on the outer periphery of a hollow metal core 102 containing a heater 101 on one side, and a plurality of support rollers 104 is provided on the other side. There is a fixing belt 105 that is stretched over the belt, and the nip width of the fixing nip portion of the heating roller 100 and the fixing belt 105 is increased to improve the fixing effect (see Patent Document 4).

  Further, as shown in FIG. 9, an endless fixing belt 201 includes an elastic polyimide resin belt base 201A, and a heat-resistant release layer in which the outer peripheral surface (surface) of the belt base 201A is coated with a heat-resistant silicone resin. 201B, and roughened to roughen the inner surfaces at both ends of the opening end of the belt base 201A. As shown in FIG. 10, an elastic annular guide is formed on the roughened inner surfaces of both ends of the endless fixing belt 201. The rubber 202 is fixed with an adhesive.

However, the operation of fixing the annular guide rubber 202 having elasticity to the inner surfaces of both ends of the opening end portion of the belt base 201A of the endless fixing belt 201 having elasticity is very troublesome because both have elasticity. Therefore, the time required for the work becomes longer and the work efficiency is lowered.
The present invention is, in view of the above circumstances, the ring Joga id having elasticity, conveniently sticking to the open end of the endless fixing belt, moreover the manufacturing method of the guiding device of the fixing belt can be performed efficiently The purpose is to provide.

In order to achieve the above object, the present invention provides
[1] In the production method of the guiding device of the fixing belt, performs a roughened roughen the inner and outer surfaces of the open end portion of the fixing belt having elasticity, and the inner portion the cylindrical projections, the internal cylindrical projection portion of this a bottom portion extending horizontally to the outside of the base of, and an external cylindrical projection portion that will be formed around the bottom of this, the ring Joga with these protrusions and elasticity which the grooves are formed by a bottom A plurality of ids are formed in advance at predetermined intervals on the sheet using upper and lower molds, and film burrs are left between the plurality of annular guides and inside the inner cylindrical projection of each annular guide. in the state, characterized by removing the plurality of the respective open ends of the fixing belt by mounting the annular guide, said film burr before Symbol loaded ring Joga id an adhesive is applied to said outer surface And

[2] The manufacturing method of the guiding device of the fixing belt according to [1], wherein the removal of the external cylindrical projection of the ring Joga id, characterized in that to leave the inner cylindrical projection and bottom .
[3] The method of manufacturing a guide device of the fixing belt according to [1], wherein the removal of the internal cylindrical projection of the ring Joga id, characterized in that to leave the outer cylindrical projection and bottom .

[4] The production method according to [1] the guiding device of the fixing belt according, characterized in that the thickness of the bottom portion of the ring Joga id a thin film.
[ 5 ] The method for manufacturing a fixing belt guide device according to [1], wherein the sheet is made of silicone rubber.

According to the present invention, the following effects can be achieved.
(1) An elastic guide device can be quickly and accurately attached to an elastic fixing belt.
(2) The adhesion to the opening end of the fixing belt can be strengthened and the opening end can be protected.

Method for producing a guide device of the fixing belt of the present invention performs roughened roughen the inner and outer surfaces of the open end portion of the fixing belt having elasticity, and the inner portion the cylindrical projections, the internal cylindrical projection portion of this a bottom portion extending horizontally to the outside of the base of, and an external cylindrical projection portion that will be formed around the bottom of this, the ring Joga with these protrusions and elasticity which the grooves are formed by a bottom A plurality of ids are formed in advance at predetermined intervals on the sheet using upper and lower molds, and film burrs are left between the plurality of annular guides and inside the inner cylindrical projection of each annular guide. in the state, the each of the annular guide the open end of the plurality of the fixing belt with adhesive applied is mounted in said outer surface, pre Symbol removing the film burrs of the mounted ring Joga id.

Hereinafter, embodiments of the present invention will be described in detail.
Figure 1 is a perspective view of the guiding device of the fixing belt of an embodiment of the present invention, FIG. 2 is a fragmentary sectional view of the guiding device of the fixing belt, FIG. 3 is a perspective view of the ring Joga id.
In these figures, 1 denotes a fixing belt, 2 is mounted on the inner and outer surfaces of the open end portion of the fixing belt 1, a groove is ring Joga id formed is, the ring Joga id 2, inner cylinder A projection 2A, a bottom 2B extending horizontally outside the base of the internal cylindrical projection 2A, and an external cylindrical projection 2C formed around the bottom 2B. These projections 2A, 2C And a groove 2D formed by the bottom 2B. The ring Joga id 2 has a rubber of silicon system.

Hereinafter, a method for manufacturing a fixing belt guide apparatus according to an embodiment of the present invention will be described.
Figure 4 is plural pieces form made the ring Joga id molded body ring Joga id embodiments having shown to bullets force resistance at predetermined intervals in the rubber sheet silicon using upper and lower dies of the present invention it is a diagram showing a, 4 (a) is a plan view of the ring Joga id molded body, FIG. 4 (b) is a perspective view of the ring Joga id moldings.

In these figures, 10 is ring Joga id molded body 11 is silicon rubber sheet forming the ring Joga id molding 10, 12 are ring Joga id, 12A internal cylindrical projection portion, 12B is bottom portion extending horizontally outwardly of the base of the internal cylindrical projection portions 12A, 12C are external cylindrical projection portion formed around the bottom 12B, 12D is a groove, 13A remains inside the internal cylindrical projection portions 12A film burrs, 13B is a film burrs left between the ring Joga id 12.

Figure 5 is a cross-sectional view showing a state of manufacturing the upper and lower dies were used ring Joga id molded body showing an embodiment of the present invention, ring Joga id 5 (a) is to be molded by the upper and lower molds sectional view of the molded body, FIG. 5 (b) so that its cross-sectional view of the molded ring Joga id moldings, FIG. 5 (c) mounting the fixing belt upside down the ring Joga id moldings It is a figure which shows the state which carried out.
Ring Joga id molded body 23 made of a sheet of silicon into the cavity between the upper mold 21 and the lower mold 22 is molded. The ring Joga id molded body 23 is made of a ring Joga id 24, the ring Joga id 24, the internal cylindrical projection portions 24A, bottom 24B extending horizontally to the outside of the base of the internal cylindrical projection portions 24A The outer cylindrical projection 24C is formed around the bottom 24B, and a groove 24D is formed. The internal cylindrical projection portions film burrs 25 A on the inside of 24A, is between the ring Joga id 24 film burr 25B is formed.

Therefore, it is possible to provide a plurality of rings Joga Id 24 to sheet of silicon at a predetermined interval, when mounting the fixing belt is also possible to be automated.
Therefore, roughening was performed to roughen the inner and outer surfaces of the opening end portion of the fixing belt, and an adhesive was applied to the inner and outer surfaces of the opening end portion of the roughened fixing belt, and the adhesive was applied. the inner and outer surfaces of the open end portion of the fixing belt, to attach the ring Joga id moldings shown in FIG. Then, it is possible, as shown in FIGS. 1 and 2, briefly fixed ring Joga id on the inner and outer surfaces of the open end portion of the fixing belt.

By this way the ring Joga id on the inner and outer surfaces of the open end portion of the fixing belt is fixed, it is possible to perform the adhesion enhancing and protection of the open end portion of the open end of the fixing belt.
6 is a perspective view of a ring Joga id showing another embodiment of the present invention.
As shown in this figure, which in the external cylindrical projection portion 33 of the ring Joga id 32 fixed to the fixing belt 31 was provided with irregularities of the mark 34, the rotary encoder with the mark 34 of the irregularities Can be added or used for detecting the number of rotations.

The shape of the ring Joga Id, can make various modifications according to the specifications of the printing machine or copier.
Figure 7 is a sectional view showing the various ring Joga id of the shape of the present invention, FIG. 7 (a) of the thicker shaped bottom ring Joga id, 7 (b) is a thin-shaped bottom ring the Joga id, FIG. 7 (c) ring Joga id internal cylindrical projection and bottom are removed external cylindrical projection portion is formed, FIG. 7 (d) is an internal cylindrical projection portions removed It shows to the external cylindrical projection and bottom is formed a ring Joga id respectively. These rings Joga id, by each having a bottom, it is possible to strengthen the protection of the end surface of the fixing belt by the ring Joga Id. Incidentally, when the mechanical strength of the rings Joga id itself is high, there may be a case of removing the bottom.

As shown in FIG. 7 (a), ring Joga id 42 that is fixed to the fixing belt 41 has a thick inner cylindrical projection portions 42A, extending horizontally outside the base of the internal cylindrical projection portion 42A thick and the bottom 42B of, consists of a thick outer cylindrical protrusion 42C formed around the bottom portion 42B, is formed with a groove 42D, the opening end portion of the fixing belt 41 is mounted in the groove 42D, the The fixing belt 41 is configured to be able to strengthen adhesion to the opening end portion and protect the opening end portion.

As shown in FIG. 7 (b), the ring Joga id 52 that is fixed to the fixing belt 51 has a thick inner cylindrical projection portions 52A, diluted extends horizontally to the outside of the base of the internal cylindrical projection portions 52A and the bottom 52B of, consists of a thick outer cylindrical protrusion 52C formed around the bottom portion 52B, is formed with a groove 52D, the opening end portion of the fixing belt 51 is mounted in the groove 52D, the protruding ring Joga id 52 from the open end of the fixing belt 51 is set to be small.

As shown in FIG. 7 (c), ring Joga id 62 that is fixed to the fixing belt 61, the external cylindrical protrusions so as to remove, to leave the thick inner cylindrical protrusions 62A and bottom 62B I have to. With this configuration, since the outside of the fixing belt 61 can be set as a free space, various devices can be arranged.
Further, as shown in FIG. 7 (d), ring Joga id 72 that is fixed to the fixing belt 71, the internal cylindrical projection portion so as to remove the thick outer cylindrical projections 72A and bottom 72B I try to leave it. With this configuration, the interior of the fixing belt 71 can be made free, and various devices can be arranged. However, in that case, a restricting member or a driving member (not shown) that engages with the external cylindrical protrusion 72A can be arranged in the fixed portion.

  In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.

  The method for manufacturing a fixing belt guide device according to the present invention can be used as a method for manufacturing a fixing belt guide device for fixing toner by applying heat and pressure to paper in a printing machine or a copying machine.

1 is a perspective view of a fixing belt guide device showing an embodiment of the present invention. FIG. 1 is a cross-sectional view of a main part of a fixing belt guide device according to an embodiment of the present invention. It is a perspective view of a ring Joga id of the fixing belt of an embodiment of the present invention. It shows multiple pieces form made the ring Joga id molded body ring Joga id embodiments having shown to bullets force resistance at predetermined intervals in the rubber sheet silicon using upper and lower dies of the present invention It is. The manner of manufacture of the ring Joga id molded body using the upper and lower molds of an embodiment of the present invention is a cross-sectional view illustrating. It is a perspective view of a ring Joga id showing another embodiment of the present invention. It is a cross-sectional view showing the various ring Joga id in the form of the invention. It is a schematic diagram of a fixing device for fixing toner by applying heat and pressure to paper in a conventional printing machine or copying machine. It is sectional drawing which shows the structure of the conventional endless fixing belt. It is a perspective view which shows the structure of the conventional endless fixing belt with a guide.

1,31,41,51,61,71 fixing belt 2,12,24,32,42,52,62,72 ring Joga id 2A, 12A, 24A internal cylindrical projection portion 2B, 12B, 24B inside the cylindrical bottom 2C extending horizontally to the outside of the base of the protrusion, 12C, 24C, 33 bottom around the formed outer cylindrical projection portion 2D of, 12D, 24D, 42D, 52D grooves 10, 23 ring Joga id molded body 11 rubber sheets 13A, 25A inside the cylindrical projection of the inner membrane burr 13B, marks film burrs 21 upper die 22 lower die 34 irregularities between 25B rings Joga id of silicon to form a ring Joga id moldings 42A, 52A, 62A Thick inner cylindrical projection 42B Thick bottom 42C, 52C, 72A Thick outer cylindrical projection 52B Thin bottom 62B, 72B Bottom

Claims (5)

(A) Roughening to roughen the inner and outer surfaces of the opening end of the fixing belt having elasticity,
A (b) and in part cylindrical projection portion, a bottom portion extending horizontally outwardly of the base of the internal cylindrical projection portion, and an external cylindrical projection portion that will be formed around the bottom portion, the projections the ring Joga id having elasticity which the grooves are formed by parts and bottom, leave plurality preformed at predetermined intervals in the sheet using a upper and lower molds,
(C) Open ends of the plurality of fixing belts in which an adhesive is applied to the inner and outer surfaces in a state where film burrs are left between the plurality of annular guides and inside the inner cylindrical protrusion of each annular guide. Attach the annular guide to each part ,
(D) the production method of the guiding device of the fixing belt and removing the film burr of the loaded ring Joga id. In the manufacturing method of the guiding device of the fixing belt according to claim 1, wherein the guide of the fixing belt, wherein the ring Joga removed external cylindrical projections of the id, characterized in that to leave the inner cylindrical projection and bottom Device manufacturing method. In the manufacturing method of the guiding device of the fixing belt according to claim 1, wherein the guide of the fixing belt, wherein the ring Joga remove the internal cylindrical projection of the id, characterized in that to leave the outer cylindrical projection and bottom Device manufacturing method. In the manufacturing method of the guiding device of the fixing belt according to claim 1, the manufacturing method of the guiding device of the fixing belt, characterized in that the thickness of the bottom portion of the ring Joga id a thin film.   2. The method for manufacturing a fixing belt guide device according to claim 1, wherein the sheet is made of silicon rubber.

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