KR19980054780U - Electrophotographic development toner supply control device - Google Patents

Abstract

The present invention is a laser beam printer, which is a toner supply device that supplies toner to be developed on paper, so that a seal having a shape appropriate to the toner supply roller is in contact with the supply roller inside the toner case. A device for supplying toner of a laser beam printer to a developing chamber, the charger for charging the surface of the photosensitive drum with a constant charge, and the toner on the electrical latent image of the photosensitive drum generated by exposure incident through a lens. A toner case for forming a toner, a transfer roller for attaching toner to the paper, a photosensitive drum for printing on the paper, and a toner case for loading and storing the toner; In order to supply the toner to the developing roller 6 uniformly, A developer supply roller 4 is provided to supply the toner powder which is agitated and fed by the edge dataator, and the developer roller 6 is applied to the developer roller 6 so that a certain layer and amount of toner can be applied. 6) The toner is regulated as a blade for controlling the amount of toner installed on the blade. This development method is the same as the conventional transfer photographing process, but the toner is charged in a fixed amount to develop a latent image on the photosensitive drum with toner. A rib is formed inside the toner case so that the toner loading chamber and the developing part are separated, and the seal (SEAL) is fixedly installed on the rib to make contact with the outer peripheral surfaces of the upper and lower parts of the supply roller to seal the developing part and the toner loading chamber. The toner supply developing site of the electrophotographic developing method formed to play a role, so that the amount of toner flowing into the developing chamber is properly maintained. .

Description

Electrophotographic development toner supply control device

The present invention relates to a toner supply apparatus for supplying toner to be developed on a paper in a laser beam printer. More specifically, a seal of a shape appropriate to the toner supply roller is fixed to the rib inside the toner case. It is installed to be in contact with the roller and supplies the toner of the laser beam printer to the developing chamber.

In general, a laser beam printer is a device for recording an electrical signal from a computer on a sheet of paper and printing is performed by generating a photocurrent on the drum by scanning a laser beam on the drum side.

Therefore, the toner supplying apparatus of the conventional laser beam printer employing the nonmagnetic one-component developing method is as shown in Figs.

1 shows an outline of a general laser beam printer, and reference numeral 1 shows a printer case of a laser beam printer, and FIG. 2 shows a configuration of an image forming apparatus according to the related art in FIG. 1.

The structure of the developing part of the laser beam printer includes a charging roller 6 which charges the surface of the photosensitive drum 2 with a constant charge when the paper P is supplied, and a photosensitive drum generated by exposure incident through a lens. The printing roller (5) attaches the toner (10) to the electrical latent image of (2), the transfer roller (4) attaching the toner (10) to the paper (P), and the printing on the paper (P). The photosensitive drum 2 is formed.

Then, inside the toner loading chamber (not shown) in which the toner 10 is loaded, an edge data generator 7 for agitating and supplying the toner 10 while rotating, and the edge data generator 7. A supply roller 6 is provided to supply the turner 10 supplied by the rotation to a developing unit (not shown).

In detail, the toner stacking chamber (not shown) of the toner case 8 to allow the toner 10 to be loaded and stored therein, and the conductive roller as the developing roller 5 are installed and used. A developing roller 6 having a conductive feed roller 6 is used for supplying the toner 10 uniformly to the developing roller 5, and a developing roller for applying a predetermined layer and a toner 10 onto the developing roller 5 is used. And a toner regulating blade (BLADE) 9 provided on (5).

The image forming apparatus of the laser beam printer configured as described above first applies electric charges to the photosensitive drum 2 using a charging mechanism, and then forms a latent image using an exposure mechanism, and then supplies the toner 10 as a developing mechanism. Rotate the feed roller 6 to supply the toner powder which is stirred and fed by the AGITATOR 7 to be constantly supplied, so that the toner 10 can be moved onto the developing roller 5. At the same time as the supply voltage is applied to the roller 6, the developing voltage is also applied on the developing roller 5.

Therefore, frictional charging of some toners occurs between the developing roller 5 and the supply roller 6 at the same time as the supply of the toner 10, and cleaning the latent image on the developing roller 5 which is developed and returned before the supply. At the same time, it is important to supply the toner 10 to the developing roller 5 so that the layer of the toner 10 can be formed as before.

The toner 10 supplied in such a state moves on and adheres to the developing roller 5 while passing through the applied toner regulating blades BLADE 9 and 9 'toner on the developing roller 5. The toner 10 on the developing roller 5 formed in this way adheres the toner 10 to the latent image formed on the photosensitive drum 2 in the previous step, since charging is applied to the 10 so that a uniform layer can be formed. Let's go.

In this way, the toner 10 attached on the photosensitive drum 2 meets the paper P at the transfer device portion, and the toner 10 on the photosensitive drum 2 causes the toner 10 to adhere to the paper by the transfer apparatus. After this process, foreign matters such as non-transferred toner 10 or a stake from paper P are attached to the photosensitive drum 2 and proceed to the next step. In the next step, the outer peripheral surface of the developing roller 5 The toner regulating blades (9, 9, 9 '), which are in contact with each other up and down, are cleaned so that the photosensitive drum 2 is in a clean state, and in this state, it can be continuously printed in the same manner as described above. Will be

However, such a conventional laser beam printer has a single toner case without a device separate from a developing roller having a charging roller, a photosensitive drum, a transfer roller, a developing roller, an edge data, and a toner loading chamber having a supply roller. Therefore, as the inner case is operated, high pressure acts inside the toner case. Therefore, even if the toner under pressure is agitated by the edge tape, the toner powder is agglomerated and the toner quality deteriorates. It is accompanied.

In addition, when the toner is agglomerated as described above, the fluidity of the toner is deteriorated, and the supply of the fine powder toner is blocked, so that the toner is difficult to be supplied to the development roller through the supply roller during printing, which greatly affects the transfer. This is accompanied by a problem that adversely affects the printer image.

The present invention is to solve the above problems, in order to control and supply the toner of the laser beam printer, by separating the developing chamber and the toner loading chamber and supplying the toner to the developing chamber in an appropriate amount as the toner is consumed. It is an object of the present invention to provide a toner supply control device for a laser beam printer that can reduce the pressure and prevent the toner from lumping, thereby improving the toner quality and improving the printer image.

In order to achieve the above object, the present invention has a suitable amount in the developing chamber by fixing a seal to the toner case so as to contact the outer circumferential surface of the seal (SEAL) in order to have a separating wall separating the developing chamber and the toner loading chamber. A toner supply apparatus of a laser beam printer in which an adjusting device is installed to supply toner.

1 is a perspective view showing the outline of a general laser beam printer,

2 is a block diagram of an image forming apparatus according to the prior art;

3 is a block diagram of an image forming apparatus according to the present invention.

* Description of the symbols according to the main parts of the drawings *

1: Printer case 2: Photosensitive drum

3: Daejeon Roller 4: Warrior Roller

5: Development roller 6: Supply roller

7: edge data 8: toner case

9,9 ': Toner Regulated Blade 10: Toner

11,11 ': Thread

Hereinafter, described in detail with reference to the accompanying drawings in accordance with the present invention.

3 is a configuration diagram of an image forming apparatus according to the present invention, and a developing unit (not shown) for forming an installation image inside the printer case 1 of a laser beam printer has a constant charge on the surface of the photosensitive drum 2. The charging roller 3 for charging, the developing roller 5 for attaching the toner to the electrical latent image of the photosensitive drum 2 generated by the exposure incident through the lens, and the toner 10 on the paper P A transfer roller 4 for attaching the toner, and a photosensitive drum 2 for printing onto the paper P, and rotating the toner stacking chamber (not shown) in which the toner 10 is loaded. Supply roller for supplying the edge data (AGITATOR) 7 for stirring and supplying the (10), and the turner 10 supplied by the rotation of the edge data (AGITATOR) 7 to the developing unit (not shown) The installation of (6) has the same configuration as before.

Therefore, a toner loading chamber (not shown) of the toner case 8 for loading and storing the toner 10 and a conductive rubber roller as the developing roller 5 are provided and used, and the developing roller 5 is used. A supply roller 6 made of a conductive material to supply the toner 10 uniformly thereon, and onto the developing roller 5 so that a certain layer and an amount of toner can be applied onto the developing roller 5. The toner 10 is regulated by the installed toner regulating blade 9. The developing method is the same as the conventional transfer photograph developing method. The latent image was developed with toner 10 on the image.

Then, the present invention is to form a rib inside the toner case (8) to separate the toner loading chamber and the developing part, and the seal (SEAL) (11, 11 ') is fixed to the rib to the top of the supply roller (6), By contacting the outer circumferential surface of the lower portion serves to seal the developer and the toner loading chamber, and the amount of the toner 10 supplied into the developing chamber is properly maintained.

Then, the toner regulating blade (BLADE) 9 is formed inside the toner case 8 so as to charge the toner 10 on the developing roller 5 and to form a uniform layer. Make contact with the outer circumferential surface of the roller (5).

According to the present invention, the charge mechanism is applied to the photosensitive drum 2 by using a charging mechanism, a latent image is formed by using an exposure mechanism, and then the toner 10 supplied as a developing mechanism is supplied with a supply roller 6. The toner 10 can be moved on the developing roller 5 by rotating the power supply. At this time, the supply voltage is applied to the developing roller 5 and the developing voltage is also applied on the developing roller 5.

Therefore, at the same time as the supply of the toner 10, frictional charging of some toners 10 occurs between the developing roller 5 and the supply roller 6, and a seal SEAL is formed on the outer circumferential surface of the supply roller 6. (11,11 ') is enclosed, which serves to seal the developing part and the toner loading chamber, thereby preventing the pressure acting as the toner loading chamber from the seal (SEAL) 11, 11' and causing the agitator (7). The toner 10 fed by stirring is supplied to the developing roller 5 so that the same layer of the toner 10 can be formed through the supply roller 6.

The toner 10 supplied in such a state moves on and adheres to the developing roller 5 and passes through the applied toner regulating blades BLADE 9 and 9 'toner on the developing roller 5. The toner 10 on the developing roller 5 formed in this way adheres the toner 10 to the latent image formed on the photosensitive drum 2 in the previous step, since charging is applied to the 10 so that a uniform layer can be formed. Let's go.

On the other hand, it flows into the developing chamber and supplies it to the developing roller 5, and the remaining toner 10 is discharged back to the toner loading chamber by the supply roller 6 of the toner 10 to prevent contamination of the developing roller 5. do.

Thus, the toner 10 attached on the photosensitive drum 2 meets the paper P at the transfer device portion, and the toner 10 on the photosensitive drum 2 is transferred to the paper P by the transfer device. 10) After this process is completed, foreign matters such as non-transferred toner (10) or equity from the paper (P) are attached to the photosensitive drum (2) and proceed to the next step. (BLADE) 9, 9 'is cleaned so that the photosensitive drum 2 is kept clean, and in this state, it can be continuously printed in the same manner as described above.

According to the above description, the present invention is provided with a seal SEAL, which is a separating wall, to separate the developing part and the toner loading part from the inside of the toner case of the laser beam printer as described above, so as to block the pressure flowing into the toner loading part. As the toner to be stirred and fed from the edge data is supplied as a fine powder without being lumped, the toner supply is smoothly provided.

In addition, due to the constant supply of fine powder can solve the problem of transfer failure, and has the effect of improving the printing image.

Then, the toner powder flows into the developing chamber and is supplied to the developing roller, and the remaining toner powder is flowed back to the toner loading chamber by the toner supply roller to prevent contamination of the developing roller, thereby improving the life of various rollers and photosensitive drums mounted on the developing unit. Will provide a beneficial effect.

Claims (2)

A toner supply apparatus using an electrophotographic developing method, An electrophotographic development toner supply apparatus, comprising: separating a developing unit and a toner loading chamber to remove toner that is settled in the developing chamber, and supplying toner by the supply of toner while the edge data is rotated. The method of claim 1, An electrophotographic development toner supply apparatus, characterized in that a seal (SEAL) is fixed to the upper and lower portions of the toner case and is formed in upper and lower portions of the toner case.