JPS638752A - Detector for adjustment of copying machine - Google Patents

Abstract

PURPOSE:To surely perform adjustment by providing an attracting means on a holding means which holds a conductor and positioning the conductor with respect to an electrifying means by a simple constitution. CONSTITUTION:After a detector 11 is set to a shaft 24 of a photosensitive drum, the detector 11 is stored in a developing unit Pu. When permanent magnets 41 and 42 provided on projections 22 and 23 are attracted to a setting frame 33 of a charging charger 32, a partitioning member 16 is placed between a transfer charger 30 and a peeling charger 31, and this state is held during adjustment by the attraction of permanent magnets 41 and 42. Thus,. the partitioning member 16, namely, metallic conductors 14 and 15 are surely positioned by the simple constitution, and the transfer charger 30 and the peeling charger 31 are surely adjusted.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) This invention relates to a transfer charger constituting a copy hall,
The present invention relates to an adjustment detection device applied to adjustment of a peeling charger.

(Prior Art) As is well known, a charger for charging, a charger for transfer, a charger for peeling, etc. are provided around a photoreceptor drum (image carrier) that constitutes a copy line.

Among these, for example, the discharge current to the photoreceptor drum by the transfer charger and the peeling charger changes depending on the ambient temperature, atmospheric pressure, etc., so it is necessary to make adjustments when a copying microscope is installed. .

Figure 3 shows a detection device used in a conventional adjustment device, which facilitates adjustment of a copying machine in which a transfer charger and a peeling charger are driven by a single power source. It is. In this detection bag 211, the approximately circular resin holder 12.13 has a diameter that almost matches that of a photoreceptor drum (not shown), and there is a semicircular arc-shaped space between these holders 12.13. A metal conductor 14.15 is fixed. The surface of these metal conductors 14.15 is matched to the contour of said holder 12.13, and each metal conductor 14.
A partition member 16 made of an insulating material is provided between the illustrated lower end portions of the partition member 15 .

Furthermore, a gap 17 is provided between the illustrated upper ends of each metal conductor 14,15. Furthermore, the holding body 13
A lead wire 18.19 electrically connected to the metal conductor 14.15 is attached to the side surface of the metal conductor 14.15 with screws 20, 21, and a positioning protrusion 22° is provided on the peripheral surface corresponding to the gap 17. 23 are provided.

In the above configuration, when performing adjustment, first, the photoreceptor drum is removed, and the detection device 11 is mounted on the shaft 24 on which the photoreceptor drum is mounted. In this state, as shown in FIG. 4, the detection device 11 is housed in the developing unit pu, and the protrusions 22.
2 comes into contact with the frame 33 on which it is attached. Then, the partition member 16 connects the transfer charger 30 and the peeling charger 3.
1. After this, from the power supply (not shown),
When power is supplied to the transfer charger 30 and the peeling charger 31, the discharge current of the transfer charger 30 is taken out via the metal conductor 14 and the lead wire 18, and is extracted via the metal conductor 15 and one lead wire. The discharge current of the stripping charger 31 is taken out. These extracted discharge currents are measured, for example, by a measuring device (not shown), and the power source is adjusted according to the measurement results. By the way, in the conventional detection device 1 described above, as shown in FIG.
Even when the detection device 11 is in contact with the frame 33 of No. 2, the detection device 11 may rotate about the shaft 24 as shown by the arrow in the same figure, and the partition member 16 is connected to the transfer charger 30 and the peeling charger 30. In some cases, the chargers 31 were deviated from each other. Therefore, it is difficult to reliably adjust the transfer band N device 30 and the peeling charger 31.

(Problems to be Solved by the Invention) This invention solves problems related to the positioning of a detection device, and its purpose is to make it possible to position the detection device with a simple configuration. , it is an object of the present invention to provide a detection device for adjustment of a copying machine that can perform adjustment reliably.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a conductor that has approximately the same diameter as an image carrier and is divided corresponding to a plurality of charging means, and a holder that holds these conductors. and an adsorption means provided on the holding means for positioning the conductor with respect to the charging means.

(Function) The present invention ensures that each conductor corresponds to the charging means by reliably positioning the conductors using the adsorption means.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. Note that the same parts as in FIGS. 3 and 4 are given the same reference numerals, and only the different parts will be explained.

In FIG. 1, an adsorption member, for example a permanent magnet 41.42, is provided on one end surface of the projection 22.23 of the holder 12.13.

In the above configuration, after the detection device 11 is attached to the shaft 24 of the photoconductor drum instead of the photoconductor drum, the detection device 11 is housed in the developing unit pu as shown in FIG. When the permanent magnets 41 and 42 provided in the electrifying device 32 are attracted to the mounting frame 33 of the electrifying device 32, the partition member 16 is positioned between the electrifying device 30 for transfer and the electrifying device 31 for peeling, and this state is It is held during adjustment by the attractive action of permanent magnets 41, 42.

According to the above embodiment, the permanent magnets 41.42 are provided on the protrusions of the holder 12.13, and the permanent magnets 41.42 are attracted to the mounting frame 33 of the charging device 32, so that the partition member 16 is I am trying to determine the position. Therefore, with a simple configuration, the partition member 16, that is,
It is possible to reliably position each metal conductor 14 and 15, and it is also possible to reliably adjust the transfer charger 30 and the peeling charger 31.

Note that the present invention is not limited to the above embodiment, and the permanent magnets 41 and 42 are attracted to the charging device 32.
The mounting frame 33 is not limited to this.

It goes without saying that various other modifications can be made without departing from the gist of the invention.

[Effects of the Invention] As detailed above, according to the present invention, by providing the holding means for holding the conductor with the adsorption means, it is possible to position the conductor relative to the charging means with a simple configuration, Definitely U4 set? It is possible to provide a detection device for adjusting a copying stage that can perform the following steps.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a detection device for adjusting a duplicator according to the present invention, FIG. 2 is a side view showing a state in which the detection means is attached to a developing unit, and FIGS. 3 and 4. 3 shows a conventional adjustment detection device for a copying machine, FIG. 3 is a perspective view, and FIG. 4 is a side view showing a state in which the detection means is attached to a developing unit. 11...detection device, 12.13...holding body, 14.
15... Kanada conductor, 30... Transfer charger, 31.
...Charger for peeling, 41.42...Permanent magnet. Applicant's representative Patent attorney Takehiko Suzue Figure 1 Figure 2 Figure 3 Figure 4

Claims (3)

[Claims] (1) A conductor that has approximately the same diameter as the image carrier and is divided corresponding to a plurality of charging means, a holding means for holding these conductors, and a positioning of the conductor provided in this holding means with respect to the charging means. What is claimed is: 1. A detection device for adjusting a copying machine, comprising: a suction means for performing the above. (2) The detecting device for adjustment of a copying machine according to claim 1, wherein the attracting means comprises a permanent magnet, and the permanent magnet is attracted to a mounting frame of a charging device. (3) A detecting device for adjusting a copying machine according to claim 1, wherein a partition member made of an insulating material is provided between the conductors.