KR100807878B1 - Revival device for a drum and roller of a laser beam printer - Google Patents

Abstract

A device for reviving a drum and a roller of a laser printer is provided to pull out the drum and the roller from a toner cartridge and revive and reuse the drum and roller like almost new one if polish of the drum is deteriorated due to wasted toner or print quality is deteriorated due to damage of the drum and the roller. In a supporting rod(101) installed in upper both sides of a support(100), a rotary rod(110) is installed as passing through so as to rotate at the original place. The rotary rod has screw units(111a,111b) facing each other in its both ends. In a side of the rotary rod, a guide rod(120) is fixed in parallel along a length direction of the rotary rod. In the screw units, support brackets(130a,130b) guided by the guide rod are screwed so as to move left and right. In a side of the support bracket, a rotation holder(140) for holding one end of a drum(200) and a roller(300) is rotatably installed by an AC(Alternating Current) servo motor(150) capable of adjusting speed step by step. In the other side of the support bracket, a holder(170) for holding the other end of the drum or the roller is installed so as to idle by a bearing.

Description

Drum and roller regeneration device for laser printers {Revival device for a drum and roller of a laser beam printer}

Figure 1 is a cross-sectional view showing the structure of one of the conventional general toner cartridge

Figure 2 is a perspective view showing an example of the drum and roller recycling apparatus of the present invention

3A and 3B are plan views showing, in cross section, a partial cross-sectional view of a state before and after mounting a drum to be reproduced in the drum and roller reproducing apparatus of the present invention.

Figure 4 is a plan view showing a cross-sectional view of a part of the roller mounted on the drum and roller regeneration apparatus of the present invention

Explanation of symbols for main parts of the drawings

100: base 101: support

110: rotating rod 111a, 111b: spiral portion

120: guide rods 130a, 130b: support bracket

140: rotating holder 141: mounting groove

150: AC servo motor 170: holder

172: pin ball 173: support pin

175: spring 200: drum

210: wheel cap 211: hole

300: roller 310: mandrel

320: rubber rod

The present invention relates to a drum and roller regeneration apparatus of a laser printer.

More specifically, toner card geography, which has used or damaged toner cartridges or drums with poor print quality due to damaged or glossed drums, can be quickly and easily replaced with the major parts of drums and rollers (PC rollers, main rollers, magnet controllers, etc.). The present invention relates to a drum and roller regeneration apparatus for a laser printer, which can reduce waste of resources and reduce maintenance costs of a printer by allowing recycling and recycling.

In general, a laser printer is one of a type in which a main roller and a PCR roller are installed together with a drum (development: hereinafter referred to as a “drum”) according to product specifications, or as shown in FIG. 1 of the toner cartridge 10. There is a type in which a drum 20, a magnetic roller 31, a charge roller 32, and a PCR roller 33 are provided inside.

The various rollers of the parts are made of a structure in which the core rods protrude to both ends of the rubber rods, and the main rollers or the magnetic rollers 31 are embedded in the outer peripheral surface of the toner powder stored in the toner storage unit 40, and then the drum 20 And the rollers 33 serve to press the paper passed between the drum 20 in close contact with the drum 20 to the surface of the drum 20 so that toner powder is evenly applied to the paper. The drum (developer) 20 is made of a metal cylinder made of aluminum to supply a current.

Briefly explaining the principle of such a laser printer as follows. That is, when electricity is supplied to the drum, positive electricity is generated, and in such a state, the computer controls the direction of the laser to shine a letter-shaped light on the surface of the drum. The electricity is turned on and the background remains positive.

After that, the positive powder is applied to the fine powder toner and sprayed on the surface of the drum. The area where the laser shines light on the drum surface is negative. And the rest of the drum is positively charged, so the toner does not stick and falls off.

In this state, if negative electricity is applied to the paper to be printed and passed between the cylinder and the PCR roller, positive toner powder, which is buried on the outer circumferential surface of the drum, adheres to the paper and becomes printed. .

If the toner cartridge is a new product, the entire toner cartridge may be thrown away as it is used up, or the toner cartridge may be refilled with the toner inside the used toner cartridge. Due to the lack of gloss and glossiness, the print quality is significantly reduced, resulting in a shorter lifetime.

The drums and various rollers (PCR rollers, main rollers, magneto-rollers, etc., hereinafter referred to as "rollers") excluding the toner filled inside the toner cartridges may be compared with the total price of the toner cartridges. It can be said that it takes a considerable weight.

In addition, in most offices and homes, the laser printer does not use only new paper but also prints on the back side of the paper (hereinafter referred to as “back side”) already printed on one side.

Here, assuming that the number of genuine toner cartridges that can be printed is 3000, the gloss of the drum will be remarkably disappeared after the 3000 toners are used up. In this state, even if the toner is refilled with the toner, the matte part is printed in a blur. In this case, the waste of resources is severe by conventionally replacing or reusing the drum or purchasing and replacing a whole new cartridge.

In addition, when using a laser printer, foreign materials such as stapler needles or paper pins are often injected together with paper due to carelessness, and in this case, the drum surface is injured by dents caused by the injected foreign matter. Is often there.

In this way, if the surface of the drum is scratched or the gloss is degraded, the function is degraded, and the print surface of the paper is streaked due to the wound, resulting in dirty print quality. Even if a lot of toner was left, it could not be used and was disposed of as a whole, which wastes resources and excessively maintains the printer.

To this end, some have adopted a method of removing the damaged drum from the toner cartridge and replacing it with a new one. When the drum is slightly damaged or polished, the drum itself, which is the most expensive of the various parts, is replaced every time. The savings in maintenance costs have not been significant and the waste of resources associated with the disposal of the drums is inevitable.

In addition, various rollers such as PC rollers and magnet controllers installed in the toner cartridge together with drums should maintain their surface density for a long time. This results in poor performance, which tends to result in poor print quality.

In this case, in order to regenerate various rollers in the past, the rollers pulled out of the cartridge were held by one hand, and the surface of the rubber rods was rubbed several times with sandpaper. Regeneration efficiency is inferior to the working time, so considering the manpower consumption, the cost of roller regeneration is not very cheap compared to the cost of replacing a new roller.

Therefore, in the past, most of the time, after abandoning the roller regeneration to replace the whole with a new toner cartridge frequently caused a problem of resource waste and maintenance costs rise.

The present invention was developed in view of the above-described conventional problems, and an object of the present invention is to use a toner cartridge filled with a toner cartridge when print quality is deteriorated due to gloss of the drum or damage of the drum and roller. The present invention provides a drum and roller regeneration apparatus for a laser printer that can reduce waste of resources and reduce printer maintenance costs by removing drums and rollers and recycling them to near new ones.

Hereinafter, a drum and roller regeneration apparatus for effectively achieving the above object of the present invention will be described in detail with the accompanying drawings as preferred embodiments.

Figure 2 is a perspective view showing an example of the drum and roller regeneration apparatus of the present invention, Figures 3a and 3b is a flat cross-sectional view showing a partial cross-sectional view before and after mounting the drum to be reproduced in the drum and roller regeneration apparatus of the present invention. 4 is a cross sectional view showing a state in which a roller is attached to the regeneration apparatus of the present invention.

As shown in the present invention, the support 101 installed on both sides of the upper surface of the pedestal 100 is installed by rotating the rotating rod 110 provided with spiral portions 111a and 111b opposite to both ends to rotate in place. The guide rod 120 is fixedly installed in parallel along the longitudinal direction of the rotary rod 110 under the rotary rod 110, and one end of the rotary rod 110 is provided at both ends of the spiral rods 111a and 111b. The support brackets 130a and 130b movably fitted to the rod 120 are helically coupled to move left and right according to the rotation direction of the rotating rod 110.

In addition, the one side support bracket 130a has a rotation holder 140 having a mounting groove 141 on one surface for mounting the wheel cap 210 of the drum 200 or the roller 300, and the speed controller 160. The furnace speed is installed to be rotated by the AC servo motor 150 is controlled in multiple stages.

Here, the wheel cap 210 is installed integrally on one side of the drum 200 to transmit the rotational force to the drum 200 when the drum 200 is made, there is a difference in its diameter according to the specifications for each model. Therefore, when the mounting groove 141 is formed in the shape of a funnel gradually narrower in diameter compared to the inlet aperture, and accommodates all the wheel cap 210 fitted to one side of the drum 200 or roller 300 in various sizes Since it can be said, it is preferable.

In addition, a holder 170 for holding the other end of the drum 200 or the roller 300 is idlingly installed by the bearing 178 on the other side of the support bracket 130b, between the rotary holder 140 and the holder 170. The drum 200 or the roller 300 to be mounted on the surface is characterized in that it can be processed.

Here, a pin ball 172 having a pin departure prevention jaw 171 is formed in the holder 170 which is idling in the other support bracket 130b, and the pin hole 172 has a stone jaw to be caught by the pin departure prevention jaw 171. It is characterized in that the support pin 173 provided with the 174 is elastically installed by the spring 175.

In the figure, reference numeral 112 is a handle for rotating the rotating rod 110, 220 is a through hole formed in the center of the other side of the drum 200, 320 is the core rod 310 of the roller 300 ) Is a rubber rod coated on the outer circumferential surface, (211) is a hole formed in the center of the wheel cap 210, 176 is a support pin 173 and the spring 175 of the pin hole 172 of the holder 170 is installed It is a cover to prevent this ride.

The process of reproducing the drum 200 and the roller 300 of the laser printer by the reproducing apparatus of the present invention formed as described above is as follows.

First, by rotating the rotating rods 110 installed on both supports 101 in one direction by the handle 112 to widen the gap between the rotating holder 140 and the holder 170 of both brackets, and then remove the toner cartridge from the toner cartridge. When the drum 200 or the roller 300 is positioned between the rotary holder 140 and the holder 170 and the gap between the rotary holder 140 and the holder 170 is narrowed, the drum 200 or the roller 300 is The mounting state is maintained by the strong pressing force of the rotary holder 140 and the holder 170.

Here, the rotating rods 110 are formed at both ends of the spiral portions 111a and 111b in directions opposite to each other, and both supporting brackets are spirally coupled to the spiral portions 111a and 111b, respectively, so that the rotating rods 110 are formed. Depending on the direction of rotation of the support bracket can be spaced apart at the same time or narrowed at the same time so that the removal operation of the drum 200 and the roller 300 can be carried out more quickly.

As another embodiment of the present invention, either of the support brackets 130a and 130b of the support bracket is fixed to the position on the support 101 or the pedestal 100, the other support bracket is It may be coupled to any one of the spiral portions 111a and 111b of the rotating rod 110 to be moved back and forth.

In this case, since both support brackets are moved, only one support bracket is moved from side to side while being mounted between the rotary holder 140 and the holder 170, so that the drum 200 and the roller 300 are detached. Although it takes a little longer, it is not difficult to perform the regeneration work while rotating the drum 200 and the roller 300.

And when the drum 200 is mounted between the rotary holder 140 and the holder 170, the rotary holder 140 for holding the wheel cap 210 of one end of the drum 200 has a mounting groove 141 has a wide inlet. Since the diameter is gradually narrower toward the inside, even if the diameter of the wheel cap 210 of the drum 200 is slightly different depending on the product specifications, any one can be easily fitted into the mounting groove 141.

In the present invention, the drum 200 or the roller 300 can be mounted only by the pressing force of the rotary holder 140 and the holder 170, but the pin hole (center) in the center of the holder 170 to hold the other end of the drum 200 172 is formed, and when the support pin 173, which is tensioned by the spring 175 through the pin hole 172, is installed in a structure where it is projected to the outside, it becomes easier to mount the drum 200.

That is, when the drum 200 is positioned between the rotary holder 140 and the holder 170, the gap between the rotary holder 140 and the holder 170 is narrowed as much as possible to receive the tension of the spring 175. Since the support pin 173 is kept in a state where it is fitted into the through hole 220 at the other end of the drum 200 while the position thereof is changed, the rotary holder 100 and the holder are rotated by rotating the rotating rod 100 with the handle 112 in the state. The mounting operation is easy as it only needs to make 170 strongly press both ends of the drum 200.

In addition, since the rotary holder 140 and the holder 170 strongly press both ends of the drum 200 as described above, the rotational force of the rotary holder 140 is transmitted to the drum 200 as it is, and the other end of the drum 200 is pressed. The holder 170 has a structure that is idling by the bearing 178, so that the high speed rotation of the drum 200 is possible without affecting the rotational force of the drum 200.

In addition, the roller 300 having a structure in which the core rods 310 protrude to both sides of the rubber rod 320 cannot be mounted between the rotary holder 140 and the holder 170 by itself. However, in the case of the roller 300, it can be mounted between the rotary holder 140 and the holder 170 by using the wheel cap 210 removed from the existing drum 200 is discarded.

That is, since the wheel cap 210 removed from the discarded drum has a hole 211 in which the core rod 310 of the roller 300 can be fitted at the center thereof, the wheel cap 210 protrudes to both sides of the roller 300 by using the hole 211. The wheel caps 210 are inserted into the pads 310 respectively.

Thereafter, the wheel cap 210 portion fitted to one side of the roller 300 may be inserted into the funnel-type mounting groove 141 of the rotary holder 140, and the wheel cap 210 inserted to the other side of the roller 300 may be centered. The roller 300 may be mounted by being fitted to the support pin 173 of the holder 170 by using the hole 211 of the holder 170. In this case, the rotary holder 140 and the holder 170 may be wheel caps 210 on both sides. ) As the rotational force is transmitted to the roller 300 as it is strongly pressed as in the case of the drum 200 described above.

In this case, the wheel cap 210 used to mount the roller 300 does not necessarily have to be disposed of a drum that is disposed of separately, or is manufactured separately for roller regeneration or between the rotary holder 140 and the holder 170. As long as it can be mounted, it can be said to use any other.

The present invention is the rotation between the rotary holder 140 and the holder 170 by rotating the rotary holder 140 with the AC servo motor 150 in a state in which the drum 200 or the roller 300 is mounted on the regeneration device as described above. The drum 200 or roller 300 that is strongly pressed at is rotated by the power of the rotation holder 140.

That is, the holder 170, which is strongly pressing the other end of the drum 200 or the roller 300, which is held by the support pin 173, is idling by the bearing 178 at the other support bracket 130b. Since the rotation holder 140, the drum 200 and the holder 170 is rotated more smoothly integrally.

As described above, the present invention processes the surface while rotating both ends of the drum 200 or the roller 300 in a simple, fast, yet firmly held state, so that the operation is easy and the surface horizontality is easy to grasp the drum 200 or The roller 300 can be recycled almost to a new one.

Hereinafter, a process of reproducing the drum 200 using the reproducing apparatus of the present invention will be described step by step.

<Drum regeneration process>

First Process (Primary Polishing Step)

Rotation of the drum 200 mounted between the rotary holder 140 and the holder 170 at a speed of 500 to 600 rpm per minute using the AC servo motor 150 whose speed is controlled by the speed controller 160 step by step. While performing the first polishing step, the polishing cloth (hereinafter referred to as "polishing cloth") provided with an abrasive is lightly contacted for 90 to 120 seconds to the scratched portion of the drum 200, which is scratched or stamped on the surface of the drum 200, for polishing.

At this time, even if the polishing cloth is lightly in contact with the wound on the surface of the drum 200, since the drum 200 is being rotated, the entire wound is polished in the circumference. During this process, the burr of the wound is polished to dent the wound. It is partially filled and corrected and the polished circumferential surface becomes finely roughened.

Second Process (Secondary Polishing Step)

A secondary polishing step of polishing the entire surface of the drum 200 with a polishing cloth while rotating the primary polished drum 200 at a higher speed of 1000 to 1200 rpm per minute is performed.

At this time, the polishing time is preferably performed for 30 to 60 seconds shorter than the first time, and when the second polishing step is performed, the drum 200 is finely peeled off the coating portion of the surface and the wound portion is completely corrected, It is evenly leveled.

3rd process (coating solution coating step)

The secondary polished drum 200 is rotated at a higher speed, and the coating solution made of a photosensitive material, which is a laser reactant, is buried in a cloth and repeatedly contacted the surface of the drum 200 several times to apply a coating film to the coating film about three times. .

That is, the first coating step of the three coating steps is to rotate the drum 200 at a faster speed than the second polishing, while repeatedly contacting the cloth containing the coating liquid on the surface of the drum 200 for a predetermined time, and then dried. It is a step of coating a primary coating film having a predetermined thickness.

The second coating step is a step in which the coating liquid contacts the surface of the drum 200 again for a predetermined time while drying the drum 200 while rotating the drum 200 at a faster speed than the first coating, and then dries the coating film to a predetermined thickness. .

The tertiary coating step is a step of coating the tertiary coating film by rotating the drum 200 at a faster speed than the secondary coating while repeatedly contacting the cloth containing the coating liquid with the surface of the drum 200 for a predetermined time.

That is, the regeneration apparatus of the present invention performs surface polishing and coating while rotating the drum while both ends of the drum removed from the toner cartridge are bitten by the support holder 140 and the holder 170, so the workability is good and the regeneration cost is good. This inexpensive cost, and the three coating steps are performed, the drum 200 can be reproduced with the level of gloss almost close to the new.

<Roller playback process>

In order to reproduce the various rollers separated from the toner cartridge by using the regeneration device of the present invention, as described above, the wheel holders 210 are inserted into both of the mandrels 310 of the roller 300 to rotate the holder 140. It should be mounted between and the holder 170.

Then, when rotating the rotating holder 140 with the AC servo motor 150, the mounted roller 300 rotates along the rotating holder 140, so in this state fine on the entire surface of the rubber rod 320 of the roller 300 The surface of the surface of the rubber rod 320 of the roller 300 survives only by contacting the sandpaper of the particles by reciprocating one or two times.

Therefore, in the related art, the roller 300 is held by hand, and the surface of the rubber rod 320 is regrind by sandpaper several times over, thus taking a long time and using a lot of manpower. The cost of regeneration is low because it is simple and can reduce time and manpower consumption due to roller regeneration.

As described above, in the present invention, when the print quality is deteriorated because the toner is used up or the surface of the drum or roller is damaged, the drum is removed from the toner cartridge by the regenerating apparatus of the present invention. This new material is recycled and the rollers can be reclaimed quickly and easily to almost new ones, thereby reducing the waste of resources by recycling waste toner cartridges and their components at low cost. It can be said to be very economical as it can reduce the maintenance cost of the printer.

Claims (4)

On the support base 101 installed on both sides of the upper surface of the pedestal 100, the rotating rods 110 provided with the spiral portions 111a and 111b in opposite directions at both ends thereof are installed to rotate in place. One side of the rotating rod 110 is fixed to the guide rod 120 is installed in parallel along the longitudinal direction of the rotating rod 110, Both ends of the rotating rod (110a) (111a, 111b) of the rod 110 is screwed to the support brackets (130a, 130b) guided by the guide rod 120 to move left and right, On one side of the support bracket (130a) is installed to rotate by the AC servo motor 150, the rotation holder 140 for holding the end of the drum 200 and the roller 300, the speed is controlled in multiple stages, The other side of the support bracket (130b) is a holder 170 for holding the other end of the drum 200 or the roller 300 is installed to be idle by the bearing 178 Drum and roller regeneration device of a laser printer, characterized in that. According to claim 1, wherein both of the support brackets (130a, 130b) Either support bracket is installed by fixing the position on the support 101 or the pedestal 100, The other side of the support bracket is coupled to any one of the spiral portion (111a) (111b) of the rotating rod 110 and installed to move left and right Drum and roller regeneration apparatus, characterized in that the drum 200 or the roller 300 to be detachable. According to claim 1 or 2, The rotary holder 140, By forming a funnel-shaped mounting groove 141 is gradually narrower inward compared to the inlet aperture Drum and roller regeneration apparatus, characterized in that the drum 200 or roller 300 to be mounted regardless of the diameter. The method according to claim 1 or 2, The holder 170 forms a pin hole 172 having a pin departure prevention jaw 171, The pin hole 172 is installed so that the support pin 173 provided with a stone jaw 174 to be caught by the pin separation prevention jaw (171) to be inundated by the spring 175 Drum and roller regeneration device of a laser printer, characterized in that.

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