CN203773228U - Photographic fixing device and image forming equipment - Google Patents

Abstract

The utility model discloses a photographic fixing device and image forming equipment. The photographic fixing device comprises a framework, wherein a heating roller, a pressurizing roller and a pair of decompressing handles are arranged in the framework; the pair of decompressing handles is hinged on the framework; the two ends of the pressurizing roller are respectively arranged on the pair of the decompressing handles, and contact with the heating roller; a second end, deviating from the decompressing handle hinged shaft, is arranged on the decompressing handles; the second end can receive first external force, so that the heating roller and the pressurizing roller are in pressure contact; a trigger end, deviating from the decompressing handle hinged shaft and the second end, is arranged on the decompressing handles; the trigger end can receive second external force, so that the heating roller and the decompressing roller release pressure contact. The image forming equipment comprises the photographic fixing device. In the photographic fixing device, when paper blocking happens, the paper clamped between the heating roller and the pressurizing roller can be conveniently taken out.

Description

Fixing device and image forming apparatus

Technical field

The utility model relates to a kind of fixing device, especially for the fixing device of image forming apparatus.The utility model also relates to the image forming apparatus that comprises this fixing device.

Background technology

At present, the image forming apparatus such as printer, duplicating machine, facsimile recorder, all-in-one multifunctional machine is widely used in people's live and work.

Image forming apparatus is provided with fixing device paper is heated to pressurization, thereby carbon dust is fixed on paper.In fixing device, be provided with the warm-up mill and the backer roll that fit tightly each other, there is thermal source warm-up mill inside, is used for heating to warm-up mill.In order to form better photographic fixing effect, warm-up mill and backer roll be pressure contact and form one and clamp district, and the paper after transfer printing enters and clamps district, thereby can access good heating and pressurization realizes better photographic fixing effect.But if paper has wrinkle or other reasons, paper, when the cramping district entering between warm-up mill and backer roll, just paper jam phenomenon may occur, cause print job failure.Occur after paperboard, system can be out of service, and give the alarm, and operator need take out after paperboard, can again print.But warm-up mill and backer roll are pressure contacts, can on paper, form larger pressure, this pressure can cause paperboard to be difficult to take out.

Utility model content

For the problems referred to above, the utility model proposes a kind of fixing device.By this fixing device, when there is paperboard, can take out easily the paper being clipped between warm-up mill and backer roll.The utility model also relates to the image forming apparatus that comprises this fixing device.

According to first aspect of the present utility model, a kind of fixing device has been proposed, framework is provided with warm-up mill, backer roll and a pair of solution pressure handle in framework; A pair of solution pressure handle is hinged on respectively on framework; The two ends of backer roll are arranged on respectively on a pair of solution pressure handle, and contact with warm-up mill; On solution pressure handle, be provided with and depart from the second end of separating pressure handle hinge, it can be accepted the first external force and make warm-up mill and backer roll pressure contact, on solution pressure handle, be provided with and depart from the trigger end of separating pressure handle hinge and the second end, it can accept the second external force makes warm-up mill contact with backer roll pressure relief.

According to fixing device of the present utility model, when there is paperboard, operator applies acting force to separating the trigger end of pressure handle, can remove the pressure contact between warm-up mill and backer roll, thereby has facilitated the paper that takes out clamping.

In one embodiment, framework comprises the first framework, the second framework, and warm-up mill is arranged on the second framework; On the first framework, be hinged with cover plate, cover plate can contact trigger end to remove the pressure between warm-up mill and backer roll.According to this fixing device, operator only needs to stir cover plate just can realize the pressure contact of removing between warm-up mill and backer roll, and does not need directly to separating the trigger end of pressure handle, to operate, and has facilitated use.

In one embodiment, the homonymy of the installation site of the second end, trigger end and backer roll in decompress(ion) handle hinge, at the trigger end of separating pressure handle, be provided with protruding operand, on the cover board be provided with the pushing part that contacts operand, cover plate is more adjacent with operand than more close the second framework of operand and pushing part.In this structure, during upset the second cover plate, pushing part can promote operand away from the second framework, thereby separate pressure handle, can drive backer roll away from warm-up mill, thereby removes the pressure contact between backer roll and warm-up mill.

In one embodiment, between the second end and the second framework, be provided with pulling force elastic component to realize warm-up mill and backer roll pressure contact.In another embodiment, between the second end and the first framework, be provided with pressure elastic component to realize warm-up mill and backer roll pressure contact.In a preferred embodiment, elastic component is spring.

In one embodiment, the second end and trigger end are in separating the heteropleural of pressure handle hinge, the installation site of backer roll and the second end are in separating the homonymy of pressure handle hinge, at trigger end place, be provided with protruding operand, on the cover board be provided with the pushing part that contacts operand, it is adjacent that operand more approaches the second framework and operand and pushing part than pushing part.In this structure, during upset the second cover plate, pushing part can promote operand near the second framework, is separating under the effect of pressure handle hinge axis, separates pressure handle and can drive backer roll away from warm-up mill, thereby remove the pressure contact between backer roll and warm-up mill.

In one embodiment, between the second end and the second framework, be provided with pulling force elastic component to realize warm-up mill and backer roll pressure contact.In a specific embodiment, elastic component is spring.

According to second aspect of the present utility model, a kind of image forming apparatus has been proposed, it comprises according to fixing device mentioned above.

Compared with prior art, the utility model has the advantage of: (1) when fixing device generation paperboard, operator's rotating plate, the bottom of cover plate promotes the two ends of backer roll simultaneously and moves, simple in structure, easy to operate.(2) when cover plate is not opened, after the shell that can also prevent image forming apparatus is opened, there is foreign matter to fall in fixing device, affect printing effect.

Accompanying drawing explanation

To the utility model, be described in more detail based on embodiment and with reference to accompanying drawing hereinafter.Wherein:

Fig. 1 is the structural representation according to image forming apparatus of the present utility model;

Fig. 2 is the first assembly structure schematic diagram of the fixing device in Fig. 1;

Structural representation when Fig. 3 is the cover plate open mode of fixing device of Fig. 2;

Stereographic map when Fig. 4 is the cover plate open mode of fixing device of Fig. 2;

Fig. 5 is the structure cut-open view shown in Fig. 2 section line;

Fig. 6 and 7 is the second fit structure schematic diagram of fixing device in image forming apparatus;

Fig. 8 is the second assembly structure schematic diagram of fixing device;

Fig. 9 is the third assembly structure schematic diagram of fixing device.

In the accompanying drawings, identical parts are used identical Reference numeral.Accompanying drawing is not according to actual ratio.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is a kind of image forming apparatus 100 that the utility model fixing device is installed, and it comprises paper feeding device 30, fixing device 10, developing apparatus 40, upper cover 20, laser generator 70.Paper, according to dotted line in figure and direction of arrow transmission, passes through paper feeding device 30, developing apparatus 40, fixing device 10, ejector roller 50 from the bottom up successively, finally falls in ADF groove 60.

As Fig. 2 has schematically shown the first structure of fixing device 10.Fixing device 10 comprises framework 11, and be arranged on disengaging pawl 12 on framework 11, separate the structures such as pressure handle 13, cover plate 15, ejector roller 50, backer roll 16, warm-up mill 17, wherein, solution pressure handle 13, cover plate 15 are used in combination and can remove paperboard, and this will be described below.

Framework 11 for example can be cuboid, and comprises the first framework 111 and the second framework 112, and in this case, warm-up mill 17 is arranged on the second framework 112.The two ends of the first framework 111 and the second framework 112 are by together with being fitted to each other, such as screw connects or welding and form framework 11.Wherein the first framework 111 can adopt panel beating to be made, and the second framework 112 adopts resin material to make, and in order to bear the high heat of warm-up mill 17, the second framework 112 need to adopt resistant to elevated temperatures material to make.

Separating pressure handle 13 has two, lays respectively at the both sides of framework 11, and its first end is hinged on the first framework 111 by hinge, and the second end is connected with the second framework 112 by flexible member 18.Further, hinge can be arranged on the first framework 111 and also can be arranged on and separate on pressure handle 13.In the present embodiment, be preferably on the first framework 111, by flange processing technology, go out a circle flange, this flange can be used as separates pressure handle 13 and the hinged solution pressure handle hinge 14 of the first framework 111.Separate on pressure handle 13 and have hole, hole coordinates with flange, realizes hinged.With respect to other, adopt extra part as the product of separating pressure handle hinge 14, flanging bore technique is simple, cost is low, has both saved material, has reduced again packaging technology.During installation, only solution pressure handle hinge 14 need to be aimed in the hole of separating on pressure handle 13, be inserted in, backer roll 16 and the first framework 111 play the spacing effect in left and right simultaneously.

On solution pressure handle 13, be also provided with the second end 133 and trigger end 134, wherein the second end 133 is accepted external force and is made backer roll 16 and warm-up mill 17 pressure contacts, trigger end 134 is accepted the pressure contact that external force is removed backer roll 16 and warm-up mill 17, and this will be described in more detail below.The two ends of backer roll 16 are positioned at separates on pressure handle 13, thereby backer roll 16 is positioned on the first framework 111.Separate the opening 132 that C type is set on pressure handle 13, the two ends of backer roll 16 are arranged in the opening 132 of this C type and can, in the interior rotation of opening 132 of this C type, therefore, separate pressure handle 13 and preferably adopt the material of rub resistance to make.

The two ends of warm-up mill 17 are positioned on the second framework 112, between warm-up mill 17 and the second framework 112, being provided with half-and-half bearing 19 (being equivalent to support) is convenient to warm-up mill 17 and is rotatably positioned in the second framework 112, therefore, half-and-half bearing 19 preferably adopts rub resistance, and resistant to elevated temperatures material is made.Because 19 of half-and-half bearings contact with the half-turn of warm-up mill 17, therefore, the dismounting of warm-up mill 17 is more convenient, saves material simultaneously, can reduce the cost of product.

Cover plate 15 is arranged on the top of fixing device 10, and its one end is arranged on the first framework 111 by hinge 152 is rotating.Hinge 152 can be arranged on cover plate 15 and also can be arranged on the first framework 111, in the present embodiment, is preferably hinge 152 on cover plate 15.Cover plate 15 is resin material, hinge 152 and cover plate 15 Integral mold moulding.On the first framework 111, the hole with hinge 152 coordinates, forms by Sheet Metal Forming Technology.

In order to realize the hinged of cover plate 15 and the first framework 111, on the first framework 111, can also go out a circle flange as the cover plate hinge 152 of cover plate 15.The thinner thickness of panel beating, and the limit, hole of carrying out after common punching technology is generally comparatively sharp, and cover plate 15 is naval stores, after the long-term upset of cover plate 15 is used, installed surface is easily worn.Go out flanging bore, both increased the contact area of cover plate hinge 152 and the first framework 111, can also avoid cover plate 15 directly to coordinate with sharp limit, hole.Cover plate 15 has also played the effect that guiding paper is discharged fixing device 10, be provided with guiding rib 154 on its medial surface, and the guiding side of guiding rib 154 can be arranged to arc, by lead ejector roller 50 discharging of paper.In addition, after cover plate 15 can also prevent that printer upper cover 20 is opened, have foreign matter to fall in fixing device 10, foreign matter also may stick on running roller, affects print quality.

In the embodiment shown in Fig. 2 and 3, the two ends of elastic component 18 (for example spring) are connected on the second end 133 and the second framework 112 of separating pressure handle 13.Cover plate hinge 152 1 sides of cover plate 15 are provided with the pushing part 151 of similar bulge-structure, are provided with the operand 131 of the similar platform structure corresponding with pushing part 151 on the trigger end 134 of solution pressure handle 13, and described pushing part 151 is mutually supported and coordinated with operand 131.

Under the normal state using of printer, cover plate 15 is to cover on fixing device 10.At this moment, backer roll 16 contacts with the effect downforce of warm-up mill 17 at elastic component 18.In this case, elastic component 18 can be selected extension spring.When there is paperboard, operator only needs to open cover plate 15, and the operand 131 that the pushing part 151 of cover plate 15 can promote to separate pressure handle 13 is away from the second framework 112.Separate pressure handle 13 and take and separate pressure handle hinge 14 and rotate for axle, thereby overcome the pulling force of elastic component 18 and drive backer roll 16 away from warm-up mill 17, thereby the pressure contact between releasing backer roll 16 and warm-up mill 17 is convenient to take out paper.After taking out paper, again cover plate 15 is covered, elastic component 18 can pull to the second framework 112 by solution pressure handle 13, thereby makes between backer roll 16 and warm-up mill 17 pressure contact again.

In order to ensure, opening when closing cover plate, the stressed minimum of cover plate 15, and rotate smooth and easyly, preferentially select the cover plate hinge 152 can be with to separate pressure handle hinge 14 parallel.

Backer roll 16 two ends need pressure relief simultaneously, and guarantee backer roll 16 integral body are all separated with warm-up mill 17, and paper can take out smoothly from fixing device 10, and therefore, the two ends of backer roll 16 are all provided with separates pressure handle 13.Cover plate 15 is all respectively arranged with pushing part 151 and operand 131 with the two ends of separating pressure handle 13, thereby guarantees that two ends, pressure roller left and right are stressed evenly, further removes smoothly paperboard and ensures photographic fixing quality.

In addition,, if will open cover plate 15, must first open the upper cover 20 of printer.The boss 153 that is easy to open cover plate 15 can be set on cover plate 15, one or more, boss 153 is inner for inserting the groove of finger, open after upper cover 20, operator only needs a hand to pull boss 153, and another hand just can easily be extracted paperboard out, very convenient, as shown in Figure 4.

Fig. 6 and 7 has schematically shown the fit structure of fixing device 10 in image forming apparatus 100.As shown in Figure 6, fixing device 10, for side direction assembling, makes cover plate 15 uncap towards side.In Fig. 6, dotted line is paper transport path, and paper turns round from paper feeding disk output, is the level of state through developing apparatus 40, and then turns round through fixing device 10, from paper delivery device for sheet, exports.In this case, the chance that foreign matter falls into fixing device 10 is less, and cover plate 15 can also have been simplified the structure of image forming apparatus 100 directly as the bonnet of image forming apparatus 100, has facilitated the operation of uncapping, as shown in Figure 7.

Fig. 8 has shown the second structure of fixing device 10.In this structure, between the second end 133 and framework 11, be provided with elastic component 18 to realize the pressure contact between warm-up mill 17 and backer roll 16.In one embodiment, elastic component 18 is stage clip.Under normal operation, elastic component 18 is in confined state, and it opens tries hard to recommend the moving pressure handle 13 of separating, and makes warm-up mill 17 and backer roll 16 pressure contacts.When cover plate 15 is opened, the pushing part 151 promotion operands 131 of cover plate 15 make to separate pressure handle 13 and take solution pressure handle hinge 14 as axle rotation, and operand 131 moves to the direction away from backer roll 16, thereby removes the pressure contact between backer roll 16 and warm-up mill 17.When cover plate 15 is closed, pushing part 151 is left and is separated pressure handle 13, and the restoring force of spring part 18 just promotes to separate pressure handle 13, makes warm-up mill 17 and backer roll 16 pressure contact again.

Fig. 9 has shown the third structure of fixing device 10, installation site with reference to each parts in figure is known, in this structure, the second end 133 and trigger end 134 are respectively in separating the both sides up and down of pressure handle hinge 14, and the installation site of backer roll 16 (being the opening 132 of C type) and the second end 133 are all in separating the downside of pressure handle hinge 14.Owing to separating pressure handle hinge 14, exchange with the position of backer roll 16, therefore, in the present embodiment, operand 131 is arranged on the right side of cover plate hinge 152, with the inverted configuration shown in Fig. 8, operand 131 shown in Fig. 8 is positioned at the left side of cover plate hinge 152, and operand 131 is adjacent with pushing part 151 mutually supports and coordinate.In this case, elastic component 18 is selected extension spring, and its two ends are connected on the second end 133 and framework 11 of separating pressure handle 13.Direction described in the utility model, mainly for embodiment of the present utility model, as long as principle is identical, does not limit the position of each parts.

When cover plate 15 is opened, pushing part 151 can promote operands 131, makes to separate pressure handle 13 solution pressure handle hinge 14 rotations with framework 11 around it.Now, separating pressure handle 13 becomes the structure of similar balance, while rising on the one end of separating pressure handle 13, its other end will decline, pushing part 151 promotes operand 131 towards a side shifting, the other end of backer roll 16 is installed to a contrary side shifting, thereby makes no longer pressure contact of backer roll 16 and warm-up mill 17.After cover plate 15 is closed, operand 131 is left in pushing part 151, and elastic component 18, under its restoring force effect, pulls and separates pressure handle 13, makes backer roll 16 and warm-up mill 17 pressure contacts.

Although the utility model is described with reference to preferred embodiment, in the situation that not departing from scope of the present utility model, can carries out various improvement and can replace parts wherein with equivalent it.Especially, only otherwise have structural hazard, every technical characterictic of mentioning in each embodiment all can combine in any way.The utility model is not limited to disclosed specific embodiment in literary composition, but comprises all technical schemes in the scope that falls into claim.

Claims (10)

1. a fixing device, is characterized in that, comprising:

Framework is provided with warm-up mill, backer roll and a pair of solution pressure handle in described framework;

Described a pair of solution pressure handle is hinged on respectively on described framework;

The two ends of described backer roll are arranged on respectively on described a pair of solution pressure handle, and contact with described warm-up mill;

On described solution pressure handle, be provided with the second end that departs from described solution pressure handle hinge, it can be accepted the first external force and make described warm-up mill and backer roll pressure contact,

On described solution pressure handle, be provided with the trigger end that departs from described solution pressure handle hinge and the second end, it can accept the second external force makes described warm-up mill contact with backer roll pressure relief.

2. fixing device according to claim 1, is characterized in that, described framework comprises the first framework, the second framework, and described warm-up mill is arranged on described the second framework; On described the first framework, be hinged with cover plate, described cover plate can contact described trigger end to remove the pressure between described warm-up mill and backer roll.

3. fixing device according to claim 2, it is characterized in that, the homonymy of the installation site of described the second end, trigger end and described backer roll in described solution pressure handle hinge, at the trigger end of separating pressure handle, be provided with protruding operand, on described cover plate, be provided with the pushing part that contacts described operand, described cover plate is more adjacent with described operand than more close described the second framework of described operand and described pushing part.

4. fixing device according to claim 3, is characterized in that, is provided with pulling force elastic component to realize described warm-up mill and backer roll pressure contact between described the second end and described the second framework.

5. fixing device according to claim 3, is characterized in that, is provided with pressure elastic component to realize described warm-up mill and backer roll pressure contact between described the second end and described the first framework.

6. according to the fixing device described in claim 4 or 5, it is characterized in that, described elastic component is spring.

7. fixing device according to claim 2, it is characterized in that, described the second end and the trigger end heteropleural in described solution pressure handle hinge, the installation site of described backer roll and the homonymy of described the second end in described solution pressure handle hinge, at described trigger end, place is provided with protruding operand, on described cover plate, be provided with the pushing part that contacts described operand, described operand than described pushing part, more approach described the second framework and described operand adjacent with described pushing part.

8. fixing device according to claim 7, is characterized in that, is provided with pulling force elastic component to realize described warm-up mill and backer roll pressure contact between described the second end and described the second framework.

9. fixing device according to claim 8, is characterized in that, described elastic component is spring.

10. an image forming apparatus, is characterized in that, it comprises according to the fixing device described in any one in claim 1 to 9.