JPS6273280A - Copying machine with fixing device - Google Patents

Abstract

PURPOSE:To improve the safety of a copying machine without any increase in cost by forming the internal wall surface of a fixing device fitting part in a bag shape at part of a copying machine body, opening part of it, and fitting a fixing device to the copying machine by using a fixing device fitting plate which is covered with the opening part. CONSTITUTION:When the fixing device 20 is mounted, a cord connected to a power feeding terminal 23a is stored while a fixing container 21 is inserted into the fixing device fitting part 35 in a horizontal direction and the fixing device fitting plate 21a is brought into contact with the end surface of the fitting part 35, so that the device is easily fixed in one body with a small screw. Consequently, the power feeding terminal 23a is covered with external wall surfaces 31-34 of the fixing device fitting part 35 provided to a front panel 30 and the fixing device fitting plate 21a provided to the fixing container 21 of the fixing device 20. Consequently, even if the front door of the copying machine is opened carelessly, such an accident that an operator has an electric shock or causes a short circuit by touching the power feeding terminal 23a is evaded completely.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides an image recording apparatus such as an electrophotographic copying machine,
Regarding a copying device having a fixing device for heating and fixing a toner image onto an image support sheet such as recording paper, in particular, the device main body ζ
The present invention relates to a copying apparatus having a fixing device with an improved fixing device mounting structure.

[Conventional technology]

2. Description of the Related Art In image recording apparatuses such as electrophotographic copying machines, a heat roller fixing device is often used to fix an unfixed image onto an image support sheet such as a recording paper.

In this type of method, a recording paper supporting an unfixed toner image is conveyed between a heating roller equipped with a heat source and a pressure roller that is in pressure contact with the roller, and the toner is thermally fixed onto the recording paper. be.

Compared to the conventionally used hot plate type fixing device, this heat roller fixing device uses two rollers, a heating roller and a pressure roller, to press the recording paper (transfer material) and then transport it for fixing, so it transfers heat. It has excellent characteristics, and not only allows the set temperature of the heating roller to be lowered, but also allows for high-speed conveyance.

[Problem that the invention seeks to solve]

The heating roller and pressure roller used in such a heat roller fixing device are incorporated into a fixing container made of a metal plate along with a discharge roller for discharging the recording paper after fixing to the outside of the machine. Both ends are supported and fixed to the front and rear panels forming the main body of the copying apparatus.

Furthermore, the drive system for each of the rollers described above is generally connected to the rear panel, and the wiring for a heater lamp containing one heating roller is generally connected to the front panel.

Therefore, there is a risk of accidentally touching the energized parts by opening the front door of the copying machine without turning off the power, and safety measures are urgently needed as copying machines are now widely used for general office use. .

As a result of solving this problem and improving the present invention, when the fixing device is incorporated into the main body of a copying machine, the current-carrying part of the fixing device is automatically shielded by a part of the main body so that it cannot be touched from the outside. The purpose is to provide a copying device with

[Means for solving problems]

The above purpose is to form the inner wall surface of the fixing device mounting part in a bag shape in a part of the main body of the copying machine, to open a part of the bag, and to fix the fixing device on the copying machine using a fixing device mounting plate which is covered with the opening. This is achieved by a copying machine having a fixing device characterized in that the device is attached thereto.

〔Example〕

An embodiment of the invention is shown in FIGS. 1 and 2.

FIG. 2 shows the main parts of the copying apparatus of the present invention, and shows the arrow P.
The recording paper fed from one direction receives the toner image transferred to the image carrier 11' in the image transfer section 12, and is separated from the surface of the image carrier 11 by the separating means 13.
After being conveyed to the fixing device 20 by 4, it is discharged from the machine in the direction of arrow P2 after undergoing a fixing process.

The fixing device 20 houses a fixing roller pair consisting of a fixing roller and a pressure roller, and a discharge roller in a box-shaped fixing container 21 made of metal plates. Bearings 22 for the fixing, pressure bonding, and paper ejection rollers
．． 24, 25, and a power supply terminal 23a of a heater lamp 23 built into the fixing roller are arranged, and a fixing device mounting plate 21a is bent and formed on the side surface.

The side surface of the fixing container 21 facing the front side is attached to a front panel 30 that forms a part of the main body of the copying apparatus.
A part of the fixing container 21 is formed into a bag shape as shown in FIG. 1, and the fixing container 21 is housed and attached thereto.

That is, at the position where the fixing container 21 of the front panel 30 is attached, a bag-shaped fixing device mounting portion 35 is formed, which is constituted by upper and lower wall surfaces 31.32 and a wall surface 33 and a wall surface 34 that connect the wall surfaces 31.32. ing. The fixing device mounting portion 35 has openings on opposite sides of the wall surfaces 33 and 34 to accommodate the fixing container 21, so when the main body is made of synthetic resin, It has a shape that can be formed integrally, and can also be easily manufactured using a metal plate and added.

The procedure for installing the fixing device 20 is to insert the fixing container 21 from the horizontal direction into the fixing device mounting portion 35 in FIG. The mounting part 3
If it is brought into contact with the end surface of 5, it can be easily fixed together with machine screws.

As a result, the aforementioned energizing terminal 23a is connected to the outer wall surfaces 31 and 3 of the fixing device mounting portion 35 provided on the front panel 30.
2.33 and 34 and the fixing device mounting plate 21a provided on the fixing container 21 of the fixing device 20 and the fixing device mounting plate 21a shield the surrounding area, so there is a possibility that the front door of the copying device may be opened inadvertently. Accidents such as touching the energized terminal 23a and causing an electric shock or short circuit can be completely avoided.

The side surface of the fixing container 21 facing the rear panel is fixed to the main body of the apparatus using the same mounting method as in the past, so that each of the stored rollers can be connected to the power transmission system of the copying apparatus.

[Effects of the Invention] The present invention enables the power supply terminal of the fixing device to be changed without adding any other parts by only changing the shape of a part of the fixing container that houses the fixing device and the main body of the copying machine to which it is attached and fixed. This proposal provides a copying device that has significantly improved safety without increasing the price.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a fixing device receiving section in a copying apparatus of the present invention. FIG. 2 is a diagram of the main parts of the copying apparatus.

Claims (1)

[Claims] A part of the main body of the copying apparatus, in which the inner wall surface of the fixing device mounting portion is formed into a bag shape, a part of which is opened, and a fixing device mounting plate that covers the opening is used to attach the fixing device to the copying device. A copying machine having a fixing device characterized by: