JPH03267984A - Web cassette device - Google Patents

Abstract

PURPOSE:To easily hold a cassette which is heated at a high temperature with hands by forming a recessed part which is easy to be held by hands on the side surface of the housing of a web cassette and providing a heat insulating member on the recessed part and the upper surface. CONSTITUTION:In the web cassette 1, the central parts outside the housings 2 and 2a on both sides are notched with narrow width x to form the recessed parts 11 and 11a and the heat insulating member 15 is stuck on the side surfaces of the recessed parts 11 and 11a and the upper surfaces of the housings 2 and 2a. In such a case, the handling of the cassette 1 is performed through the part of the member 15. Since the web cassette 1 whose temperature is high can be directly held by the hand, the work for the maintenance, etc., of the device is easily performed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device used for cleaning and applying oil to a heating roller in a heating roller type fixing device. - The cassette is configured to be housed in the cassette and installed at a position corresponding to the heating roller of the fixing device, and the cassette is provided with heat insulating means on the top and sides of the cassette so as to be easily handled. .

(Prior Art) A heating roller type fixing device includes a heating roller that houses a lamp as a heat source inside, and a pressure roller that presses the heating roller with a predetermined pressure. In between, heat and pressure are applied through the paper carrying the toner image to melt and fix the toner.

In the fixing device configured as described above, there are problems in that the surface of the heating roller is stained with toner, and paper may also adhere to the surface of the roller. Therefore, in order to prevent the above-mentioned inconvenience from occurring, oil for preventing offset is applied to the surface of the heating roller, and the roller surface is cleaned by the oil application means.

As the above-mentioned means, for example, Japanese Patent Application Laid-Open No. 58-1
As shown in Japanese Patent No. 82670 and the like, a device has been proposed that uses a garment made of thin paper, nonwoven fabric, or the like impregnated with oil to prevent offset.

In the case of a coating device using a wearer as in the conventional example, the action of cleaning the surface of the heating roller and applying oil is performed by driving the wearer at a very low speed or while driving the wearer intermittently. This has the advantage that maintenance such as replacing clothing can be easily performed.

In the conventional apparatus using wear as described above, the web, the pressing roller, the web drive mechanism, the housing, etc. are integrated, and after the web is used, not only the wear but also the wear is removed. It is constructed so that its attached parts can also be discarded.

In the conventional fixing device as described above, when a web cassette using a web is arranged at the upper part of the fixing device and the web is pressed against a heating roller by a press roller, the press roller is generally attached to the wear cassette. By simply installing the cassette and installing the cassette, the wear can perform the functions of '/Rn and oil supply.

(Problem to be Solved by the Invention) However, as described above, when the web cassette and the pressure roller are formed integrally, it is difficult to connect the cassette and the attached parts such as the pressure roller after the web is used up. There is a problem in that you end up throwing away the items together, and even reusable items are thrown away.

Therefore, it has been proposed to incorporate a pressure roller etc. into the main body mechanism and discard the minimum number of members such as the web and shaft member together with the cassette. It has been proposed to reduce the cost of cassettes.

In the case of the configuration described above, the suppression roller is supported via a support arm provided on the main body of the fixing device, and after setting the web cassette, the pressure roller is set to the pressing position and the heating roller is forced to press the web. I can do it.

However, since the web cassette installed at the top of the fixing device is placed above the heating roller, it is constantly heated by the heat of the heating roller.
The upper part of the housing is heated to about 90°C.

Therefore, when replacing the wear cassette or removing the web cassette for maintenance while the image forming apparatus is in operation, there are problems such as having to hold the extremely hot web cassette directly. There is.

Therefore, it is conceivable to attach a handle or the like to the web cassette and perform handling via the handle, but using a means such as a handle is not possible.
A drawback arises in that the handling property is reduced.

Furthermore, if there is not enough free space above the fixing device, it is impossible to provide extra items such as a handle on the web cassette due to space constraints, and the fixing device of a normal image forming device There are problems such as difficulty in applying it.

(Object of the Invention) The present invention solves the above-mentioned problem of the means for handling the web cassette, and includes forming a recessed portion on the side surface of the housing of the web cassette for easy access.
The object of the present invention is to provide a means for easily holding a cassette heated at a high temperature by hand by providing a member having heat insulating properties in the recess and the upper surface.

(Means J5 for Solving Problems and Effects) The present invention brings a wear provided in a wear cassette impregnated with oil into contact with a heating roller of a heating roller type fixing device, and uses the web to contact the heating roller of a heating roller type fixing device. The present invention relates to a device configured to perform cleaning and oil application.

In the wear cassette of the present invention, a narrow part is formed in the center of the housing in the longitudinal direction, and means having heat insulating properties are provided on the sides of the narrow part in the eye and on the upper surface of the cassette. The structure is such that the cassette is handled through the section.

Further, as the heat insulating member provided in the web cassette of the present invention, a heat-resistant flocked sheet or the like can be used, and the flocked sheet can be attached to the surface of the housing.

By having the configuration as described above, in the wear cassette of the present invention, while the image forming apparatus is in operation,
The web cassette can be easily handled when replacing the wear cassette or when removing the wear cassette to perform maintenance on the fixing device.

Therefore, since the operator can directly hold the wear cassette with a high degree of S in his hand, he can easily carry out work such as maintenance of the apparatus, and it becomes possible to improve work efficiency.

(Example) The structure of the double cassette of the present invention will be explained according to the illustrated example.

A web cassette 1 of the present invention shown in FIGS. 1 and 2
In the embodiments of -, FIG. 1 shows a perspective view of the web cassette, and FIG. 2 shows a cross section taken along line 8-A in FIG.

In the illustrated embodiment of the invention, the web cassette 1
In this example, groove-shaped housings 2.2a are arranged with their openings facing each other, connected by side plates 4.4a on both sides, and an opening 10 is provided between the two housings 2.2a.

Furthermore, the material constituting the housing is, for example, a heat-resistant plastic, such as polycarbonate resin or other material that has good processability and can withstand the temperature of the heating roller (approximately 200°C). can be used.

As shown in FIG. 2, in the two housings 2.2a, a feeding shaft 6 and a winding shaft 8 are arranged so as to pass through the center of each housing. The ends of the web are fixed and the web 5 is moved across the opening 10 as the web is unwound from one axis to the other.

The web 5 is a thin wear-like material made of nonwoven fabric, paper, cloth, etc., as in the case of conventional wear, and the web is coated with silicone oil or the like to prevent offset of the fixing device. A material impregnated with can be used.

The feeding shaft 6 and the winding shaft 8 that support the web 5 are respectively arranged so as to pass through one plate at the longitudinal end of the housing 2.2a, 4
gear 7.9 is installed on the side). The gear is connected to a drive mechanism provided in the main body of the fixing device to take up the web.

Further, in the wear cassette 1 of the present invention, each of the two housings 2.2a has a stepped portion 3 in the longitudinal direction.
．． 3a, and by locking the stepped portion 3.3a to a support member of the fixing device, it can be installed in the fixing device as shown in FIG.

In the web cassette 1 of the present invention configured as described above, the central part of the outer surface of the housings 2.2a on both sides is cut out with a width X to form four parts 11.1.
1a, and a heat insulating sheet 15 is attached to the side surface of the recess and the upper surface of the housing.

The heat insulating sheet 15 is a heat-resistant sheet member with fluff flocked on the surface thereof, and is attached to the surface of the housing by means of adhesion using double-sided adhesive tape or the like.

In addition, as the flocked sheet member having heat insulating properties, for example, "Himeron J (trade name)" etc. can be used, but in addition, any sheet member having heat resistance and heat insulating properties may be used. can be used.

On the other hand, it is conceivable to perform flocking directly on the surface of the plastic housing, but in general, electrical flocking on the surface of plastic members has problems such as relatively high cost. Currently, it is difficult to apply direct hair transplantation to disposable wear cassettes. However, if the method described above can be carried out at a low cost, it is also possible to directly implant hair in the area where the sheet is pasted.

With the configuration described above, the web cassette of the present invention can be directly held and removed from the fixing device by hand, and maintenance of the device can be easily performed. In other words, when replacing the web cassette with a conventional wear cassette, it is necessary to turn off the power to the device, open the fixing device, hold it for several minutes, and wait for the web cassette to cool down before removing it. However, in the case of the present invention, even if the temperature of the cassette is high, it is possible to easily hold the cassette by hand.

Furthermore, as described above, by providing the heat insulating sheet 15 in the center of the web cassette, for example, oil impregnated in the web evaporates due to heat and adheres to the surface of the housing. Incidental effects include preventing the oil, etc. from adhering to the hands even when the heat insulating sheet is held in the hand, thereby eliminating problems such as getting the operator's hands dirty. can also be demonstrated.

(Fixing device and web cassette support mechanism) The web cassette 1 of the present invention constructed as described above is placed above the heating roller 21 of the fixing device 20 as shown in FIG.

In the example shown in FIG. 3, the fixing device 20 has a heating row 521 and a pressure row 523 facing each other, and
The paper bearing the toner image is passed between the two days and A,
This is a heating roller type device configured to perform fixing, and a heating device 822 such as a halogen lamp is housed inside the heating roller 21.

In the fixed serving device M20, an entrance guide 25 is arranged at the paper introduction section, and the paper carrying the toner image, which is fed by a conveyor belt or the like, is guided between both rollers.

In addition, a peeling claw 26 for peeling the paper from the heating roller is arranged in the paper ejection section to prevent the paper from adhering to the surface of the heating roller via the melted toner, and to prevent the paper from adhering to the surface of the heating roller, and to prevent the paper from adhering to the surface of the heating roller. Feed the paper toward the ejection roller.

The fixing device provided with the attachment means configured as described above is housed inside the housing 30 and is insulated so that other devices are not affected by the heat of the heating roller. A member for mounting the web cassette 1 is arranged on the upper part of the housing 30.

A support member 32 protruding from the inside of the front plate 31 of the housing and a tie plate 34 placed inside the rear plate 33 are arranged at the mounting portion for the web cassette 1 arranged at the upper part of the housing 30. , the step 3 of the web cassette 1 relative to the support member 32,34...
... to be locked.

An upper cover 35 that can be opened and closed via a hinge 36 is disposed on the upper part of the housing, and a locking arm 38 is provided at the open end of the upper cover 35 via a hinge 37.
A claw member 39 at the end of the arm 38 is locked into a locking hole 32a provided in the front plate 31 of the housing.

Further, a web cassette 1 is provided on the upper part of the housing 30.
When the web cassette 1 is attached and the upper cover 35 is closed, the upper cover 35 can press the upper part of the web cassette 1 and hold it in a fixed position.

Therefore, by closing the upper cover, the web cassette 1 disposed at the top of the fixing device can be accurately positioned and held relative to the heating roller.

Note that the fixing means for fixing the upper cover 35 to the housing can be achieved by one or more arm members, but the fixing means can be set arbitrarily.

Further, a roller support member 711 is provided downward from a predetermined position of the upper cover 35, and the roller support member 711
A pressing roller 40 is provided at the tip of the web 1 , and the pressing roller 40 presses the web 5 toward the heating roller 21 .

Note that the pressure roller 540 has a heat-resistant and relatively hard sponge-like roller member attached to the shaft, and is impregnated with a predetermined amount of oil, as in the case of a conventionally commonly used pressure roller. Good effects can be achieved by using these.

Therefore, in the fixing device @20 of the present invention, the operation of fixing the web cassette 1 is performed by opening the upper cover 35, mounting the web cassette 1 on the upper part of the housing 30, and then closing the upper cover 35. It can be done.

Then, by closing the upper cover, the web 2 is pressed against the heating roller 21 by the suppression roller 40 passing through the opening 10 at the center of the web cassette 1, thereby applying oil to the heating roller 21 by the wear and cleaning. The action can be performed immediately.

(Effects of the Invention) As described above, the apparatus of the present invention has the following additional means for attaching a heat-insulating sheet to the top and side surfaces of the housing of the web cassette.
The ease of handling the web cassette can be improved.

Further, in the web cassette of the present invention, the web cassette can be easily handled when replacing the web cassette while the image forming apparatus is in operation, or when removing the web cassette and performing maintenance on the fixing device. .

Therefore, the operator can hold the high-temperature web cassette directly, making it easier to perform maintenance work on the apparatus and improving work efficiency.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the configuration of the web cassette of the present invention;
FIG. 2 is a sectional view taken along line A--A in FIG. 1, and FIG. 3 is a side view of the web cassette installed in the fixing device. Reference numeral 1 in the figure: Wear cassette, 2: Housing, 4: Side plate, 5: Web, 6
・8...shaft, 11...recess, 15...
...Insulation sheet, 20 ...Fixing device, 21
... Heating roller, 23 ... Pressure roller, 30 ... Housing, 35 ... Upper cover, 40 ... Pressure roller. 77

Claims (1)

[Claims] In an apparatus configured to perform cleaning and oil application by bringing a web provided in an oil-impregnated web cassette into contact with a heating roller of a heating roller type fixing device, the web is A narrow part is formed in the longitudinal center of the cassette, and means having heat insulation properties are provided on the sides of the narrow part and on the top surface of the cassette, and the handling of the cassette is controlled through the heat insulating member part. A web cassette device characterized in that the web cassette device is configured to perform the following operations.