JPS634256A - Image forming device - Google Patents

Abstract

PURPOSE:To improve the safety and productivity of an image forming device and to reduce the size of the device by performing electric wiring in the image forming device by using plural beltlike conductors arranged in an insulating structure. CONSTITUTION:An electric decoration unit 30 is lowered to a specific position on a bottom plate A, positioned, and fixed to the bottom plate A with a screw, etc. Then, the contact 30a on the side of the electric decoration unit 30 faces a contact part 50a on the side of a beltlike conductor 50 correctly and automatically to contact it elastically under specific contacting pressure. Further, when a driving motor unit 40 is lowered to a specific position on the bottom plate A, positioned, and fixed to the bottom plate A, a contact 40a on the side of the unit 40 comes into correct contact with a contact part 50b automatically. Further, a fixing device unit 14 is lowered to and positioned at a specific position on the bottom plate A and then a contact 14a on the side of the unit 14 contacts a contact part 50c on the side of the beltlike conductor 50 automatically. Thus, the safety and productivity of the device are improved and the size is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention [Field of Industrial Application] The present invention relates to an image forming apparatus such as an electrophotographic type or an electrostatic recording type. More specifically, the present invention relates to devising a wiring configuration between image forming process units of such devices.

[Conventional technology]

2. Description of the Related Art Conventionally, in an image forming apparatus, electrical wiring between various image forming process equipment units (units) disposed within the apparatus has been performed by soldering electric wires (cords) or connecting them by inserting a socket.

[Problem that the invention seeks to solve]

However, the above-mentioned wiring is difficult to automate and is mostly done by hand, which is inefficient, prone to miswiring, poor productivity, and from a safety point of view, the equipment's mechanical Target ciT! If the wiring part comes into contact with the part, it will cause a disconnection, so special protective measures are required, and the provision of such measures is one of the causes of hindering the design of the entire device to be more compact. It had some problems.

The present invention aims to solve the above problems.

Summary: Structure of the Invention [Means for Solving the Problems] The present invention is characterized in that electrical wiring within an image forming apparatus is performed by a plurality of strip-shaped conductors disposed within an insulating structure. The main subject is image forming devices.

[For production]

In other words, by using the wiring configuration as described above, in terms of device assembly, it is possible to configure the drop-in assembly of individual image forming equipment units, and it is possible to connect the units between each other without relying on manual labor. Wiring can be automated and incorrect wiring to unnecessary locations can be prevented. Furthermore, in terms of safety, there is no risk of the wiring member coming into contact with mechanically movable parts of the device and breaking the wire, so it is safe. Furthermore, in terms of serviceability, when removing and installing units that require power supply, it is possible to create a configuration in which the units themselves are automatically connected without the need for special connectors, and each unit can be easily replaced by the user. becomes.

〔Example〕

Figure 2 shows an example of an image forming apparatus (transfer type electrophotographic copying machine)
The schematic configuration is shown below.

In the figure, reference numeral 5 denotes a reciprocating document table glass, which is driven to reciprocate in the left-right direction by a drive mechanism (not shown). A document 6 is placed at a predetermined position on the upper surface of the document table glass 5 with the image surface to be copied facing downward, and is pressed and set with a document pressure bonding plate 7.

The downward image surface of the set original 6 is subjected to slit illumination scanning by sequentially passing through the illumination section 8 during the forward or backward movement of the original table glass 5. Reference numeral 9 indicates an illumination light source, and the downwardly reflected light of the slit illumination light from the document surface is sequentially image-formed and exposed onto the surface of the rotating photosensitive drum 1 by an imaging lens (short focus imaging element array) 10.

The rotating photosensitive drum 1 is subjected to a positive or negative charging process by a discharger 2, and then subjected to the above-mentioned imaging exposure, so that an electrostatic latent image corresponding to the original image is sequentially formed on the drum circumferential surface. has been done.

Next, the surface of the drum on which the latent images are formed sequentially passes through the positions of the developing devices 3 and receives the sequential development of the latent images.

The developed image on the first surface of the drum reaches the transfer discharger 11 position,
The images are sequentially transferred from the transfer material feeding section 12 onto two surfaces of the transfer material fed between the drum 7 and the transfer corona discharger 11 in a period synchronized with the rotation of the drum 1.

The copying material P that has undergone the image transfer is sequentially separated from the surface of the drum 1 by a separating means (not shown), passes through the guide section 13, and is transferred to the fixing device 1.
4, the image is fixed, and the paper is discharged as an image-formed product (copy) by a discharge roller 15 to a paper discharge tray 16 outside the machine.

The surface of the drum from which the transfer material has been separated passes through a cleaning device 4 to remove the developer remaining after transfer, and is used repeatedly for image formation.

The transfer material feeding unit 12 includes a transfer material manual feed table 20, a pair of feeding rollers 21, a pair of registration rollers 23, a first transfer material guide member 22 disposed between the pair of feeding rollers 21 and the pair of registration rollers 23. - Consists of a pair of registration rollers 23 and a second transfer material guide member 24 disposed between the photosensitive drum 1.

The transfer material p inserted into the copying machine from the top of the table 20 is drawn into the copying machine by a pair of feeding rollers 21, passes through a first guide member 22, and passes through the nip portion of a pair of registration rollers 23, which are not rotating at that point. The tip is received. The registration roller pair 23 starts rotating at a predetermined timing that is synchronized with the rotation of the photosensitive drum 1, whereby the transfer material is guided by the second guide member 24 and fed toward the photosensitive drum 1. The zero unit 20 introduced into the transfer section between the photosensitive drum 1 and the transfer discharger 11 may be a cassette or a deck containing a large number of transfer materials.

FIG. 1 shows an electrical unit 30 for the above-mentioned device.
・Drive motor unit) 40 - Fixing device unit 14-3
3 shows an example of interconnection of units according to the present invention.

A is the chassis bottom plate of the device exterior casing. This bottom plate A is made of an insulating material, and three of the above examples are attached to each predetermined position on this bottom plate A.
The respective units 30 and 40-14 are fixedly attached. Of course, other components such as a transfer discharger unit) 11' and a transfer material feeding section unit 12 are also fixed in predetermined positions on the bottom plate A, but these are not shown in the figure.

50° is a band-shaped conductor placed at a predetermined position on the upper surface of the insulating bottom plate A, and that portion is 50a tatami 50bl + 50C
is the contact 30a11 on the side of each unit 30-40-14 above.
40a*14a, and is molded into a shape that makes it easy to contact with 40a*14a and stabilizes the contact pressure.

The electrical unit 30 is then lowered to a predetermined position on the bottom plate A, positioned, and fixed to the bottom plate A with fixing members such as screws (not shown). Then, the contact 30a on the electrical unit 30 side automatically corresponds correctly to the contact portion 50a on the strip conductor 50 side, and comes into elastic contact with the contact portion 50a with a predetermined contact pressure.

Similarly, when the drive motor unit 40 is lowered to a predetermined position on the bottom plate A, positioned, and fixed to the bottom plate A, the contacts 40a on the side of the unit 40 are automatically correctly aligned with the contacts 50b on the side of the strip conductor 50. They are in corresponding positions and elastically in contact with each other with a predetermined contact pressure.

Furthermore, regarding the fixing unit 14, when the unit 14 is lowered to a predetermined position on the bottom plate A, positioned, and fixed to the bottom plate A, the contact 14a on the side of the unit 14 is connected to the contact part 50c on the side of the strip conductor 50. The contact point is automatically positioned correctly and elastically in contact with a predetermined contact pressure.

31 indicates a power cord for the electrical unit 30.

Therefore, the electrical equipment unit 30 and the drive motor unit 40, and the electrical equipment unit 30 and the fixing device unit 14 are automatically and electrically stably wired via the strip-shaped conductor 50, respectively.

That is, in the drive motor unit 40, from the electrical equipment unit 30 to the contact 30a on the unit 2 side → the contact 5 of the strip conductor 50
Power is supplied through the path 0a→strip conductor 50→contact 50b of the strip conductor 50→contact 40a on the drive motor unit 40 side.

Further, in the fixing device unit 14, from the electrical unit 30 to the contact 30a on the unit side → the contact 50 &→ of the strip conductor 50
Power is supplied through a path from the strip conductor 50 to the contact 50c of the strip conductor 50 to the contact 14a on the fixing device unit 14 side, and the supplied current flows to the thermoswitch 1 of the fixing device unit 14.
4b (abnormal heating prevention switch) and is supplied to the fixing heater lamp 14c.

That is, by placing the strip conductor 50 in advance at a predetermined position on the bottom plate A, and assembling the predetermined equipment units 30, 40-14, etc. at the predetermined positions on the bottom plate A, each equipment unit can be assembled. Electrical wiring is completed automatically and accurately.

Although the above embodiment was an example in which the strip conductor 50 was wired on the upper surface of the bottom plate A, it goes without saying that the same effect can be obtained even if the strip conductor 50 is insert molded and integrated during injection molding of the bottom plate A. .

Furthermore, in the above embodiment, power is supplied to the drive motor unit 40 and the fixing device 14, but it is also possible to supply power to other units such as a paper feed unit that sends out transfer paper, a drive unit that drives the entire device, etc. Naturally, it can be applied in the same way.

C. As described in detail of the invention, by wiring the electrical wiring of the image forming apparatus using a band-shaped conductor, (1) Improved ease of assembly: Drop-in assembly of each unit to the apparatus chassis can be automated because it is a circular part. Since the wiring position is constant, incorrect wiring can be prevented.

(2) Improved safety: Since the strip conductor is fixed to the bottom plate, the strip conductor does not come into contact with mechanically moving parts, preventing disconnection.

(3) Improved serviceability: Electrical wiring between units is automatically completed at the same time as the unit is installed, improving serviceability and making it easier for users to replace units.

(4) Space saving: Compared to wiring using cord east wires, the strip conductor is thin and in close contact with the bottom plate, which is advantageous for downsizing the entire device.

It produces many advantages such as, improves the sexual performance of each function, and achieves the intended purpose.

[Brief explanation of the drawing]

The drawings show one embodiment, and FIG. 1 is an explanatory diagram of an assembly procedure, and FIG. 2 is an overall schematic configuration diagram of an example of an image forming apparatus. A is an insulating bottom plate, 30 is an electrical unit, 40 is a drive motor unit, 14 is a fixing device unit, and 50 is a strip-shaped conductor.

Claims (2)

[Claims] (1) An image forming apparatus characterized in that electrical wiring within the image forming apparatus is performed by a plurality of band-shaped conductors disposed within an insulating structure. (2) The image forming apparatus according to claim 1, wherein the band-shaped conductor is integrally molded with an insulating structure.