JPH0535408Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a label-shaped insulating member that is attached to the surface of a metal member facing a connector that conducts high-voltage power.

[Background of the idea]

For example, in a copying device such as a transfer type electrophotographic copying device, an image carrier, which is a rotating drum-type photoreceptor having a photoconductive photosensitive layer on the outer peripheral surface, is used. A photosensitive layer on its peripheral surface is charged with a direct current to form an electrostatic latent image on the photosensitive layer. This electrostatic latent image is developed with a developer in a developing section, and the resulting toner image is transferred onto a transfer paper that is supplied in synchronization with the rotation of the image carrier. The transfer paper on which the toner image has been transferred is then conveyed to a fixing section where it is separated from the surface of the image carrier by a separation means such as a separation pole or a separation claw. The toner image transferred onto the transfer paper within the fixing section is fixed to the transfer paper to form a permanent image and is discharged outside the machine.

[Problem that the invention attempts to solve]

Very high voltage DC power is supplied to the charger in the above-mentioned copying apparatus. This high-voltage DC power is generated in a power supply section within the device and is supplied to the charger through a covered conductor. However, in recent years, a connector has been interposed between the power supply section and the charger, and high voltage direct current has been conducted through the connector. Copying devices can be broadly divided into an upper structure consisting of a document table, an exposure optical system, an image carrier, and a charger around it, and a superstructure consisting of a group of devices such as a document table, an exposure optical system, an image carrier, and a surrounding charger, and a superstructure consisting of a group of devices such as a paper feeder, conveyance device, fixing device, power supply device, paper ejection device, etc. It consists of a substructure. In recent years, this upper structure and lower structure have been put together and divided into upper and lower parts, and made into a so-called clamshell type that can be pivotally supported by a hinge member and opened, making it convenient for inspecting and repairing the inside of the machine. It's starting to feel like this. In such a copying apparatus, the charger belonging to the upper structure and the power supply section belonging to the lower structure must be electrically connected through a connector. By the way, in this connector conduction part, a part of the conductor is exposed or is considered to be exposed. Therefore, with respect to the surface of the metal member facing the connector conduction part near the connector conduction part, the respective insulation distances of the creeping surface and the space from the connector conduction part become a problem.

[Means to solve the problem]

The present invention has been made to solve the above-mentioned problems, and in a device that supplies high-voltage power from a power supply section to a high-voltage receiving section via a connector, the present invention is provided near the connector. This is achieved by a label-shaped insulating member characterized in that the insulating state of the metal member is improved by being fixed to the surface of the metal member facing the connector.

【Example】

An embodiment of the present invention is shown in FIGS. 1 to 4. FIG. 1 is a perspective view of the vicinity of a connector in a copying machine showing an embodiment of the present invention, FIG. 2 is a configuration diagram of the copying machine according to the present invention, and FIG. 3 is a sectional view of an insulating member fixing part. , FIG. 4 is a perspective view of the insulating member. First, the outline of the copy image forming process will be explained with reference to FIG. The image carrier 1 is a rotating drum type photoreceptor having a photoconductive photosensitive layer on its outer peripheral surface, and rotates in the direction of the arrow. The surface of the image carrier 1 is preliminarily connected to a power cutter 11.
is uniformly charged by This charger 11 is a high-voltage receiving member, and is supplied with high-voltage current from a power supply section S in the device via a connector to be described later. Next, the image carrier 1 is irradiated and imaged by the exposure optical system 12 to form an electrostatic latent image corresponding to the image of the original on the surface of the image carrier 1. The image carrier 1 further rotates and reaches the position of a developing device 13, where it is developed with a developer and the electrostatic latent image becomes a visible image. The image carrier 1 rotates, and the leading edge of the visible image on its surface reaches the vicinity of the transfer section. The toner image is transferred from the image carrier 1 to the transfer paper P by the transfer electrode 14 . After the transfer, the transfer paper P is separated from the image carrier 1 by the cooperative action of the separation electrode 15 and the separation claw 16 acting on the surface of the image carrier 1 each time. After separation, the transfer paper P is guided by the transport guide plate section and transported to the fixing device 17, where it is fixed to form a permanent image and is discharged outside the machine. In this embodiment, high voltage power (-5.5KV) is supplied from the power source S to the charger 11 as well as to the transfer pole 1.
4. Electric power having respective voltage values is supplied to the separation electrode 15, the image carrier 1, etc. In the figure, 2 is a connector part, and 3 is an insulating member. In this connector section 2, the power supply section S and the power receiving section are configured to be able to be freely connected to and separated from each other. Insulating member 3
is the metal skeleton member 4 adjacent to this connector portion 2
is fixedly provided on the surface facing the connector portion 2 . FIG. 1 is a perspective view of the vicinity of the above-mentioned connector section of the copying apparatus. Reference numerals 5 and 6 denote spring terminals, which are terminal portions of a conductive member for supplying power from the power source S. Spring terminal 5 connects DC high voltage power (5.5KV) to charger 11.
The spring terminal 6 is a terminal that supplies bias voltage (200 to 300 V) to the developing device. 11a is a conductive contact of the charger 11, which is bent into an L-shape. The contact portion at the tip of the conductive contact 11a is brought into contact with the tip of the spring terminal 5 to establish electrical continuity. The conductive contact 11a is insulated except for the tip abutting portion. That is, the conductive contact 11a is loosely inserted into the conductive contact insertion hole on the device main body side and is insulated. Figure 2 shows its appearance. A conductive contact 7 supplies a bias voltage to the developing device, and is bent so as to have an abutting portion at its tip. This contact portion is brought into contact with the tip of the spring terminal 6 to establish electrical continuity. The insulating member 3 is a sheet-like label made of polyethylene terephthalate (P, E, T) resin. Adhesive is applied to the back surface of the insulating member 3, and the insulating member 3 is fixed to the metal frame 4 by adhesion. Alternatively, it may be fixed using double-sided adhesive tape. On the surface of the insulating member 3, precautions such as "Caution for high voltage" are printed, so that it also functions as a caution level. FIG. 3 is a cross-sectional view of a fixed portion to which the insulating member 3 is fixed, and FIG. 4 is a perspective view of the insulating member 3. The insulating member 3 is adhered and fixed from the top surface to the side surface of the metal skeleton 4 facing the connector portion 2 . The distance from the spring terminal 5 on the high voltage side of the connector section 2 to the metal skeleton 4 is electrically evaluated by two methods: spatial distance and creepage distance. Spatial distance is the shortest distance measured directly in the space intervening between the two, and creepage distance is the shortest distance along the surface of the structure that supports the two. The spring terminal 5 is filled with high voltage power of -5.5 KV, and therefore it is necessary to ensure sufficient space distance and creepage distance as described above. In the present invention, a label-shaped insulating member 3 is fixed on the surface of the metal frame 4 facing the connector part 2, especially the spring terminal 5 which is a high voltage part, so as to ensure sufficient insulation distances as described above. It is.

[Effect of the idea]

According to the present invention, in a device that supplies high voltage power from a power supply section to a high voltage receiving section through a connector that can be freely connected and detached, a metal member provided near the connector is placed opposite to the connector. Since the label-shaped insulating member is fixedly attached, and precautions are preferably written on the surface thereof, it is possible to provide an insulating member that not only improves the insulation state of the metal member but also realizes the function of transmitting the precautions. It became.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
3 is a sectional view showing a fixed state of an insulating member, and FIG. 4 is a perspective view of the insulating member. DESCRIPTION OF SYMBOLS 1... Image carrier, 2... Connector part, 3... Insulating member, 4... Metal skeleton (metal member), 5, 6...
... Spring terminal, 7, 11a ... Conductive contact,
11... Charger (high voltage receiving section), S... Power supply section.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a device configured to supply high voltage power from a power supply section to a high voltage receiving section via a connector,
A label-shaped insulating member, characterized in that the insulating state of the metal member is improved by being fixed to a surface of the metal member provided near the connector facing the connector. (2) The label-shaped insulating member according to claim 1 of the utility model registration claim, characterized in that a caution is written on the surface.