JPH0463372A - Separating charger - Google Patents

Abstract

PURPOSE:To save trouble of manual work and to improve the paper jam preventing capacity by automatically cleaning a separating charger at the time of turning on the power source of main body. CONSTITUTION:When the power source of the main body is turned on, a controller 11 of an electrifying charger rotates a motor 1 forward to turn a belt 2 clockwise. According as the belt 2 is moved, a gear 4 coupled to the belt 2 as one body is moved, and a cleaner 3 is moved from one terminal box 7a toward the other terminal box 7b of a charger case 6 to clean the inside of the case 5 and a charger line 6. When the cleaner 3 reaches the box 7b, a sensor 10b detects it, and the motor 1 is reversed by the controller 11 to turn the belt 2 counter-clockwise, and the same operation is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a separation charger for separating a photosensitive drum and paper used in an electrophotographic recording device.

[Conventional technology]

Conventionally, this type of separate charger has an opening facing the charged section, a charger wire is stretched in the longitudinal direction of the opening, and the electric charge of the charger wire is applied to the paper to connect the photosensitive drum and the paper. It was designed to be separated.

[Problem to be solved by the invention]

In the conventional separate charger described above, due to toner scattering within the device, toner adheres to the surface of the charger line and the inside of the charger case, and due to this toner adhesion, it is not possible to apply a certain charge to the paper. When the paper runs out, it becomes difficult for the paper to separate from the drum, which can easily cause a paper jam. For this reason, in the past, it was necessary to periodically perform manual cleaning to prevent this defect, which caused problems in terms of maintenance.

[Means to solve the problem]

The separate charger of the present invention includes a charger case having an opening facing a charged portion, a terminal member provided at both longitudinal ends of the charger case, and a terminal member stretched between the terminal members in the charger case. A separate charger for an electrophotographic recording device comprising a charger wire, a cleaner that reciprocates in the longitudinal direction of the charger wire and cleans the surface of the charger wire and the inside of the charger case; A separate charger comprising: a drive mechanism that detects when the device is powered on and reciprocates the cleaner.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a schematic perspective view showing one embodiment of the present invention. The charger case 5 has an opening facing the charged part, and terminal boxes 7a provided at both ends of the case 5 in the longitudinal direction.
A charger line 6 is stretched between 7b. Reference numeral 1 denotes a motor that starts when the electrophotographic recording device is powered on. This motor 1 is built in one terminal box 7a, and its terminal N
Pulley 8a is attached to the motor shaft protruding to the one potential side of 7a.
and the belt 2 is attached to the pulley 8bm supported on the one potential side of the pulley 8a and the other terminal box 7b. Further, the charge wire 6 is inserted through a cleaner 3 that matches the cross-sectional shape of the charger case 5, and the cleaner 3 is installed in the charger case 5 so as to be able to reciprocate in the length direction of the charge wire 6.

On the other hand, there is a long hole 9 in the longitudinal direction on the one potential side of the charger case 5.
is opened, and one end of the shaft 10 inserted into the elongated hole 9 is inserted into the cleaner 3.
A toothed type 4 is attached to the rear end of the shaft 10, which meshes with and is integrally connected to the lower process of the timing belt 2.

Furthermore, sensors 10a and 10b are provided at positions facing the cleaner 3 of each terminal box 7a and 7b to detect when the cleaner 3 has moved to the respective terminal box 7a and 7b. A controller 11 is provided that detects when the power is turned on and controls the drive of the motor 1 based on the outputs of the respective senses 10a and 10b. Controller 11
detects that the electrophotographic recording device is powered on, rotates the motor 1 forward in the direction in which the cleaner 3 is sent to the terminal box 7b, and rotates the motor 1 reversely when the sensor 10b detects the cleaner 3, When the sensor 10a detects the cleaner 3, the motor 1 is stopped.

Here, motor 1. Belt 2. Tooth mold 4. The shaft 10, the controller 11, the sensors 10a, 10b, and the like constitute a drive mechanism that drives the cleaner 3 when the electrophotographic recording apparatus is powered on.

In this embodiment, the motor 1 is electrically connected to the electric circuit of the main body of the electrophotographic recording apparatus, and when the power of the main body is turned on, the controller 11 first rotates the motor 1 in the forward direction to rotate the belt 2.
Gives rotational feed in the clockwise direction. As the belt 2 moves, the teeth 4 integrally connected thereto move together with the belt 2, and the cleaner 3 moves from one terminal box 7a of the charger case 5 toward the other terminal box 7b. However, the cleaner 3 cleans the inside of the charger case 5 and the charger line 6.
cleaning. Then, the cleaner 3 is connected to the other terminal box 7b.
When the belt reaches the side, the sensor 10b detects this, and the controller 11 reversely rotates the motor 1 to rotate the belt 2 in a counterclockwise direction, causing it to perform the same operation as described above.

〔Effect of the invention〕

As explained above, the present invention automatically cleans the separate charger when the power is turned on, thereby saving manual labor, and by having a fixed cleaning cycle.
This has the effect of preventing paper jams caused by paper wrapping around the drum.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of the present invention. 1...Motor, 2...Belt, 3...Cleaner,
4... Tooth shape, 5... Charger case, 6... Charger wire, 7a, 7b--Terminal box, 8a, 8b--Pulley, 9... Long hole, 0... Shaft, Oa . 0b...Sensor, 1...Controller.

Claims (1)

[Claims] a charger case having an opening facing the charged part;
In a separate charger for an electrophotographic recording device, the charger includes terminal members provided at both ends in the longitudinal direction of the charger case, and a charger wire stretched between the terminal members in the charger case. A cleaner that reciprocates in the longitudinal direction and cleans the surface of the charge line and the inside of the charger case, and a drive mechanism that detects when the electrophotographic recording device is powered on and reciprocates the cleaner. A separate charger featuring: