CN210488237U

CN210488237U - Color laser printing equipment

Info

Publication number: CN210488237U
Application number: CN201921913458.0U
Authority: CN
Inventors: 金亦绒; 金亦仁
Original assignee: Sichuan Jinpeng Hongda Industrial Co ltd
Current assignee: Sichuan Jinpeng Hongda Industrial Co ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-05-08
Anticipated expiration: 2029-11-07

Abstract

The utility model discloses a color laser printing device, a plurality of groups of pressure roller sets are arranged in a printer shell, a fixing roller at the rear of a toner cartridge working position and a pressure roller matched with the fixing roller are arranged in the printer shell, a slide rail is arranged in the printer and can be connected with a toner cartridge support in a sliding way, a toner cartridge is placed on the toner cartridge support, one side in the printer shell is provided with a motor and a transmission structure connected with the motor, the transmission structure is connected with one end of the toner cartridge when the toner cartridge is positioned at the working position to drive a photosensitive drum, a developing roller, a charging roller and a stirring roller in the toner cartridge to rotate, a pressure roller matched with the photosensitive drum is arranged below the photosensitive drum, the other end of the toner cartridge is provided with a toner adding channel, the inner end of the toner adding channel is communicated with a toner bin of the toner cartridge, the upper part of the outer end of the toner adding channel is axially connected with, the inner end position of the A connecting channel corresponds to the carbon powder adding channel position of the corresponding selenium drum so as to be contacted and supported.

Description

Color laser printing equipment

Technical Field

The utility model relates to a laser printing technique, concretely relates to colored laser printing equipment.

Background

The main situations in the laser printer industry today are: in a laser printer produced by foreign manufacturers, after carbon powder in an ink box in a common toner cartridge is used up, the whole toner cartridge needs to be replaced; on the basis of cost saving, domestic manufacturers can take out the selenium drum after the carbon powder is used up, discharge the waste powder and inject new carbon powder into the selenium drum. However, because of the limitation of the structure of the selenium drum that can add the carbon powder in the prior art, the selenium drum needs to be taken out every time of adding, although the selenium drum of the present laser printer takes out the installation very conveniently, but the structure of adding the carbon powder and discharging the carbon powder is not convenient enough, it is all everywhere to spill the carbon powder or waste powder very easily, the polluted environment just is difficult to clean, some manufacturers' selenium drum structures can carry out the carbon powder after even will dismantling the selenium drum shell certainly and add and waste powder discharges, consequently, many domestic selenium drum sellers all provide the carbon powder and add the toll service. Particularly, for color laser printing equipment, the color laser printing equipment generally comprises four toner cartridges carrying four toner powders with different colors, the workload is higher when the toner powders are added, certain cost is still generated for units with larger color printing amount, such as printing shops, advertising companies, and business departments needing to print color certificates such as anti-counterfeiting business licenses, and the replacement is troublesome if the units need to be replaced. Meanwhile, when too much waste powder in the waste powder bin in the toner cartridge is not cleaned in time, the inside of the printer is easily polluted, a double image phenomenon exists, and although the toner cartridge structure of domestic manufacturers can discharge the waste powder, the situation of untimely cleaning often occurs due to the fact that the toner cartridge structure is relatively troublesome.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a colored laser printing equipment, its carbon dust adds conveniently, is applicable to the great condition of colored printing volume and uses, for example print shop, advertising company, need carry out the business department who prints to colored certificates such as anti-fake business license, practiced thrift the cost lovers and added the expense of carbon dust and the useless powder of discharge, it is also very convenient to add the carbon dust simultaneously and clear up the useless powder.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a color laser printing device comprises a paper box arranged at the lower part of a printer shell, a paper outlet plate arranged at the upper part of the printer shell, a plurality of groups of pressure roller groups for supplying power to paper, a fixing roller arranged at the rear part of a toner cartridge working position and a pressure roller matched with the fixing roller, a slide rail arranged in the printer, a toner cartridge support connected with the slide rail in a sliding way, a toner cartridge arranged on the toner cartridge support, a motor and a transmission structure connected with the motor arranged at one side in the printer shell, the transmission structure connected with one end of the toner cartridge when the toner cartridge is positioned at the working position to drive the photosensitive drum, a developing roller, a charging roller and a stirring roller in the toner cartridge to rotate, a laser emitter in the printer shell irradiates on the photosensitive drum, the pressure roller matched with the photosensitive drum is arranged below the photosensitive drum, a toner adding channel is arranged at the other end of the toner cartridge, the inner end, the upper part of the outer end of the carbon powder adding channel is axially connected with a carbon powder bin sealing cover, one side of the inner wall of the printer shell, which corresponds to the other end of the toner cartridge, is provided with a connecting channel A, the inner end of the connecting channel A corresponds to the carbon powder adding channel of the toner cartridge corresponding to the connecting channel A, and the connecting channel A can be contacted and abutted when the toner cartridge is positioned at a working position due to the size of the connecting channel A; the outer end of the A connecting channel is positioned outside the printer shell, and the highest point of the A connecting channel is lower than the lowest point when the corresponding carbon powder bin sealing cover is screwed right above the carbon powder adding channel.

The other end of the toner cartridge is provided with a waste toner discharge channel, the inner end of the waste toner discharge channel is communicated with a waste toner bin of the toner cartridge, the upper part of the outer end of the waste toner discharge channel is connected with a waste toner bin sealing cover in an axial mode, one side, corresponding to the other end of the toner cartridge, of the inner wall of the printer shell is provided with a B connecting channel, the inner end of the B connecting channel corresponds to the waste toner discharge channel of the toner cartridge corresponding to the B connecting channel in position, and the B connecting channel can be contacted and abutted with the B connecting channel when the toner cartridge is positioned at a working position due to the; the outer end of the connecting channel B is positioned outside the printer shell, and the highest point of the connecting channel B is lower than the lowest point when the sealing cover of the waste powder bin corresponding to the connecting channel B is screwed to the position right above the waste powder discharge channel.

As a preferred technical scheme, the outer end of the connecting channel A is detachably connected with a plug.

As a preferred technical scheme, the inner end of the connecting channel A is provided with a sealing ring.

As a preferred technical scheme, the front side of the upper end of the front side of the connecting channel A is provided with a return bulge, the lowest point of the return bulge corresponding to the connecting channel A is higher than the highest point of the carbon powder bin sealing cover when the carbon powder bin is sealed, and the carbon powder bin sealing cover which is screwed upwards is screwed downwards to seal the carbon powder bin when the toner cartridge support is pulled outwards due to the height of the return bulge.

As a preferred technical scheme, a sealing ring is arranged at the inner end of the connecting channel B.

As a preferred technical scheme, the front side of the upper end of the front side of the B connecting channel is provided with a return bulge, the lowest point of the return bulge corresponding to the B connecting channel is higher than the highest point of the waste powder bin sealing cover when the carbon powder bin is sealed, and the height of the return bulge enables the waste powder bin sealing cover which is screwed up to downwards rotate when the selenium drum support is pulled outwards to seal the waste powder bin.

As a preferred technical scheme, a spiral push rod is arranged in the waste powder bin, the height of the spiral push rod is lower than the inlet of the waste powder bin, and the height of the waste powder discharge channel is lower than the inlet of the waste powder bin.

As a preferred technical scheme, the outer end of the B connecting channel is detachably connected with a waste powder collecting box.

As a preferred technical scheme, a plurality of selenium drums are arranged in a printer shell, and carbon powder adding channels and waste powder discharging channels of the plurality of selenium drums are arranged in a staggered mode.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an effect diagram of the connection channel of the printer housing and the toner cartridge.

Fig. 3 is an enlarged view at a.

Fig. 4 is a top view of the cartridge holder.

Wherein the reference numerals are as follows:

1-printer shell, 2-toner cartridge, 21-toner bin, 22-waste toner bin, 23-photosensitive drum, 24-seal, 25-stirring roller, 26-charging roller, 27-developing roller, 28-developing scraper, 29-scraping blade, 210-toner receiving sheet, 211-toner adding channel, 212-waste toner discharging channel, 213-spiral push rod and 214-toner bin sealing cover. 3-laser emitter, 4-pressure roller, 5-fixing roller, 6-slide rail, 7-selenium drum support, 71-bottom plate, 72-positive baffle, 73-side baffle, 74-photosensitive drum opening, 8-A connecting channel, 9-B connecting channel, 10-return projection and 11-sealing ring.

Detailed Description

The utility model discloses a overcome prior art's defect, provide a color laser printing apparatus, it is right to combine the embodiment below the utility model discloses do further detailed description.

A color laser printing device is the same as the basic structure and principle of a one-time coloring laser printer in the prior art, and the parts which are the same as the prior art and have technical support for the application are simply described below for easy understanding.

As shown in fig. 1, the color laser printing apparatus includes a printer housing, a paper cassette for placing a4 paper is disposed at the lower part of the printer housing, a paper output plate is disposed at the upper part of the printer housing, and a toner cartridge 2, a laser emitter 3, a fixing assembly, and a paper feeding assembly are disposed inside the printer housing 1.

The common installation mode of the selenium drum 2 of the disposable coloring laser printer is that the selenium drum 2 is installed on the laser printer through a drawer push-pull type structure. The inside inner wall of printer shell corresponds has two slide rails 6, but slidable mounting has selenium drum support 7 on the slide rail 6, and printer shell openly has the drawer door, opens the drawer door, pulls out selenium drum support 7. The color laser printing generally comprises four selenium drums 2 containing carbon powder with different colors, the selenium drums 2 are sequentially arranged in four selenium drum placing grids of a selenium drum support 7, then the selenium drum support 7 is pushed in, and a drawer door is closed.

The toner cartridge 2 comprises a toner cartridge 2 shell, the toner cartridge 2 shell is divided into a carbon powder bin 21 and a waste powder bin 22, the photosensitive drum 23 is mounted on the toner cartridge 2 shell and is located between the carbon powder bin 21 and the waste powder bin 22, a developing roller 27 (also called a magnetic roller) is arranged at an outlet of the carbon powder bin 21, a developing scraper 28 is connected at an outlet of the carbon powder bin 21, and a blade tip of the developing scraper 28 is in contact with the developing roller 27 and is located at a tangent line of the developing roller 27. A seal 24 is further arranged between the photosensitive drum 23 and the toner hopper 21, one end of the seal 24 extends out of the toner cartridge 2 shell to be convenient for people to tear out, the seal 24 is arranged in the new toner cartridge 2, when the toner cartridge is used, the seal 24 is removed, and the toner in the toner hopper 21 can be in contact with the developing roller 27. The toner hopper 21 is also provided with a stirring roller 25. A laser emitter inside the printer housing impinges on the photoreceptor drum.

A charging roller 26 is rotatably arranged at the upper part of the shell of the selenium drum 2, the charging roller 26 is tangent to the photosensitive drum 23, a tangent pressure roller 4 is arranged right below the photosensitive drum 23, and A4 paper passes between the photosensitive drum 23 and the pressure roller 4.

The waste powder bin 22 is provided with an opening, the upper end and the lower end of the opening are respectively provided with a scraping blade 29 and a powder receiving sheet 210, the scraping blade 29 and the powder receiving sheet 210 are both tangent to the photosensitive drum 23, and an inlet of the waste powder bin 22 is formed between the scraping blade 29 and the powder receiving sheet 210.

A transmission end is arranged at one end of the outer portion of the selenium drum 2 shell, the transmission end is connected with a photosensitive drum shaft core in the selenium drum 2 shell, and the photosensitive drum shaft core is connected with a developing roller shaft core, a charging roller shaft core and a stirring roller shaft core through transmission structures such as gears.

A motor and a contact type conductive column are arranged in the wall of the shell at one side of the printer shell. One end of the motor is connected with a transmission device, when the motor does not work, the transmission device is positioned in the shell wall of the printer, when the motor works, the structure of the transmission device enables the motor to rotate in a set direction, a section of the motor can extend forwards (extends out of the shell wall of the printer), and the motor is meshed with the transmission end at one end of the shell of the selenium drum 2 to drive the photosensitive drum 23, the charging roller 26, the developing roller 27 and the stirring roller 25 in the whole selenium drum 2 to rotate. One of the prior art structures is provided for reference: CN 201720532590.1. The contact type conductive columns are communicated with the conductive ends at one end of the shell of the mounted selenium drum 2 in a contact mode, and the conductive ends are directly connected with the shaft core of the charging roller in a rotating mode, so that the charging roller 26 is electrified, and the charging roller 26 charges the photosensitive drum 23.

Of course, in the printer housing, a fixing roller 5 and a pressure roller 4 matched with the fixing roller are also arranged behind the working positions of the four toner cartridges 2, the fixing roller 5 has a heating function for fixing, and a plurality of groups of pressure rollers 4 are also arranged in the printer housing to provide power for the movement of A4 paper.

The following explains a modification of the present embodiment:

the purpose of this embodiment is, can directly add from the printer outside in order to realize the carbon dust, simple structure, convenient operation, and any personnel can all accomplish simply, need not specially find the people and carry out the carbon dust and add the operation, and the structure is also very simple simultaneously.

As shown in fig. 1 to 3, in the present embodiment, a carbon powder adding channel 211 and a waste powder discharging channel 212 are disposed at the other end of the casing of the cartridge 2 (i.e., the end corresponding to the transmission end and the conductive end). The carbon powder adding passage 211 and the waste powder discharging passage 212 are integrally short and convex with respect to the other end of the toner cartridge 2.

The inner end of the carbon powder adding channel 211 is communicated with the carbon powder bin 21, the outer end of the carbon powder adding channel 211 is provided with a carbon powder bin sealing cover 214, the upper part of the carbon powder bin sealing cover 214 is connected with the upper part of the carbon powder adding channel 211 through a shaft, the carbon powder bin sealing cover 214 is provided with a sealing ring 11 right opposite to the corresponding part of the carbon powder adding channel 211, the carbon powder bin sealing cover 214 is tightly connected with the carbon powder adding channel 211 through a shaft, and the carbon powder bin sealing cover 214 can be rotated and unscrewed only by applying external force, so that.

The inner end of the waste powder discharge passage 212 is communicated with the carbon powder bin 21, the outer end of the waste powder discharge passage is provided with a sealing cover of the waste powder bin 22, the upper part of the sealing cover of the waste powder bin 22 is connected with the upper part of the waste powder discharge passage 212 through a shaft, the sealing ring 11 is arranged at the position, corresponding to the waste powder discharge passage 212, of the sealing cover of the waste powder bin 22, the shaft connection force of the sealing cover of the waste powder bin 22 and the waste powder discharge passage 212 is tight, namely, the sealing cover of the waste powder bin 22 can be rotated and unscrewed only by applying external force, and the waste powder.

In this embodiment, a connection channel is further provided on the inner wall of the printer to correspond to the toner adding channel 211 and the waste toner discharging channel 212, one section of the connection channel is located outside the printer housing, and the other end of the connection channel protrudes to be located inside the printer. The end of the connecting channel inside the printer is provided with a sealing ring 11, and the structure of the sealing ring 11 is that the outer edge of the sealing ring 11 is provided with a sealing bulge. In this embodiment, for convenience of description, a connection channel corresponding to the toner adding channel 211 is defined as an a connection channel 8, and a connection channel corresponding to the waste toner discharging channel 212 is defined as a B connection channel 9.

In the present embodiment, for a color laser printer, there are four toner cartridges 2 by default, and therefore, there should be four a connection channels 8 and four B connection channels 9, which are arranged in a staggered manner. (the printer position where the drawer door is positioned is the front side) the upper part of the front side of each connecting channel on the inner wall of the printer shell is provided with a return bulge 10. The connecting channels corresponding to the carbon powder adding channel 211 and the waste powder discharging channel 212 on each toner cartridge 2 should meet the requirement that the size of the connecting channel just can abut against the corresponding carbon powder adding channel 211 and the corresponding waste powder discharging channel 212, so that the connecting channel can block the carbon powder bin sealing cover 214 and the waste powder bin 22 sealing cover at the outer end of the corresponding carbon powder adding channel 211 or the corresponding waste powder discharging channel 212 when the toner cartridge 2 is installed on the toner cartridge support 7 and pushed inwards.

The lowest point of the return bulge 10 is slightly higher than the highest point when the sealing cover of the waste powder bin 22 or the sealing cover 214 of the carbon powder bin seals the waste powder bin 22 and the carbon powder bin 21, so that the return bulge 10 does not influence the pushing-in process. The highest point of the connecting channel is lower than the lowest point when the sealing cover 214 of the toner hopper or the sealing cover of the waste toner hopper 22 is screwed to the position right above the corresponding toner adding channel 211 and the waste toner discharging channel 212.

In this embodiment, the connecting channel is used for blocking the sealing cover of the waste toner bin 22 or the sealing cover 214 of the toner bin when the toner cartridge support 7 is pushed inward after the toner cartridge 2 is mounted, so that the connecting channel is pushed by the connecting channel, and is rotated upward, so that the connecting channel is abutted to the corresponding toner adding channel 211 or the corresponding waste toner discharging channel 212. When the toner cartridge 2 is taken out, the toner cartridge holder 7 is pulled outwards (at this time, the sealing cover of the waste toner bin 22 is above the waste toner discharge channel 212, and the sealing cover 214 of the toner bin is above the toner adding channel 211), and when the toner cartridge holder 7 is pulled outwards, the sealing cover of the waste toner bin 22 and the sealing cover of the waste toner bin 22 pass through the return protrusion 10 correspondingly connected to the upper front side of the channel, and the position of the return protrusion 10 corresponds to the sealing cover of the waste toner bin 22 and the sealing cover 214 of the toner bin, so that in the process of pulling the toner cartridge holder 7 outwards, under the action of the return protrusion 10, the sealing cover of the waste toner bin 22 covers the waste toner discharge channel 212 in a downward rotating manner, and the sealing cover 214 of the toner bin covers the toner adding channel 211 in a downward rotating manner.

Furthermore, in order to help the waste powder bin 22 discharge waste powder, a spiral push rod 213 is rotatably disposed in the waste powder bin 22, and the spiral push rod 213 is also connected to the core shaft of the photosensitive drum 23 through a gear transmission structure, so that the core shaft of the photosensitive drum 23 rotates to drive the spiral push rod 213 to rotate, and since the waste powder bin 22 is provided with the inlet of the waste powder bin 22, in order to prevent the waste powder from being discharged from the inlet of the waste powder bin 22 due to the rotation of the spiral push rod 213, it must be satisfied that the highest point of the spiral push rod 213 is lower than the inlet of the waste powder bin 22, and the waste powder discharge channel 212 is lower than the inlet of the waste powder bin 22, so that the waste powder can be discharged from the waste powder discharge channel.

In this embodiment, the reason why the waste toner discharging channel 212 and the carbon toner adding channel 211 are staggered is as follows (in this embodiment, only the carbon toner adding channel 211 is used for explanation, the principle of the waste toner discharging channel 212 is the same as that of the waste toner discharging channel 212, and for convenience of explanation, the toner cartridge 2 is defined as a first toner cartridge 2 to a fourth toner cartridge 2, and the first toner cartridge 2 and the fourth toner cartridge 2 are respectively located at the foremost side and the rearmost side, and then correspond to the first carbon toner adding channel 211 to the fourth carbon toner adding channel 211, the first carbon toner hopper sealing cover 214 to the fourth carbon toner hopper sealing cover 214, the first a connecting channel 8 to the fourth a connecting channel 8, and the first return protrusion 10 to the fourth return protrusion 10):

after the toner cartridge 2 is mounted on the toner cartridge support 7, in the process of pushing the toner cartridge 2 inwards, the toner cartridge 2 passes through the connecting channel, after the connecting channel pushes the corresponding toner hopper 21 opening cover or waste toner hopper 22 opening cover on the toner cartridge 2 open, the toner cartridge 2 is just arranged in a close contact manner with the toner adding channel 211 or waste toner discharging channel 212, if the toner cartridge is not arranged in a staggered manner, in the process that the toner cartridge support 7 pushes the toner cartridge support 7 into the printer to the working position, the toner cartridge sealing cover four 214 sequentially passes through the connecting channels one-four A8, and then the toner cartridge sealing cover four 214 can sequentially pass through the process that the toner cartridge sealing cover is pushed open by the connecting channel one 8 to be upwards rotated, pushed downwards by the force exerted by the return bulge two 10, pushed upwards and downwards by the connecting channel two A8, and pushed downwards by the return bulge three return bulge 10 to be rotated … … until the toner cartridge sealing cover four is pushed upwards by the connecting channel four A8. That is, the more the toner cartridge 2 is, the more the number of times the toner hopper sealing cover 214 corresponding to the toner cartridge 2 is opened is, so that in order to avoid the problem that the toner hopper sealing cover 214 is opened to cause toner leakage, the toner hopper sealing cover 214 should be staggered to avoid mutual influence, and when the toner cartridge 2 is in the working position, the toner hopper sealing cover 214 is only jacked open by the corresponding connecting channel a 8.

The working principle of the embodiment is as follows:

when the new toner cartridge 2 is used, the sealing strips 24 on the toner cartridge 2 are pulled off, then the toner cartridges 2 are sequentially placed on the toner cartridge support 7 and pushed into the printer, in the pushing process, the toner bin sealing covers 214 and the waste toner bin 22 sealing covers on the four toner cartridges 2 are sequentially pushed open by corresponding connecting channels in the printer, the toner adding channel 211 and the waste toner discharging channel 212 are in contact connection with the connecting channels, and one end of each connecting channel is positioned outside the printer, so that carbon powder can be directly added from the outside of the printer to the inside through devices such as an injector and the like (in actual production, each connecting channel should be marked on the printer shell 1 to indicate which toner cartridge 2 corresponds to the connecting channel A8 or the connecting channel B9, and simultaneously, in actual production, the plug is also arranged at the outer end, positioned outside the printer shell 1, of the connecting channel A8 corresponding to the toner bin 21 adding channel, a plug plugs it when no carbon powder is added).

And the structure of this embodiment is equipped with in useless powder storehouse 22 and follows sensitization drum 23 pivoted auger push 213, consequently, when printing the process and producing useless powder, useless powder storehouse 22 also can discharge useless powder, guarantees that useless powder volume is at a lower level in useless powder storehouse 22, has solved among the prior art useless powder too much and when not clearing up in time again, the inside that causes prints pollution, ghost image phenomenon. In order to achieve the technical effect, as an optimal mode, the position of the B connecting channel 9 is provided with a waste powder collecting small box which can be detachably connected outside the printer shell, in general, the waste powder collecting small box is arranged on the B connecting channel 9 and used for collecting the discharged waste powder at any time, and a user can conveniently take down the waste powder collecting small box at any time and pour out the collected waste powder. As an optimal mode, the structure of the waste powder collecting small box can be that a socket is arranged at the upper part of one side, the B connecting channel 9 is inserted into the socket to realize connection, the structure is simple, and the disassembly is convenient.

In the prior art, a top view of the cartridge holder 7 is shown in fig. 4, and includes a bottom plate 71, a plurality of positive baffles 72 and a plurality of side baffles 73 are disposed on the bottom plate 71 to separate the bottom plate 71 into four cartridge compartments, and a photosensitive drum opening 74 is disposed on the bottom plate 71 corresponding to each cartridge compartment for allowing the photosensitive drum 23 to pass through and contact with the pressure roller 4 at the lower portion of the holder. In practice, the toner cartridge holder 7 only needs to be matched with the toner cartridge 2, and in order to better achieve the waste toner discharging and toner adding effects, the side baffle 73 of the present embodiment should have a lower height, which is slightly higher than the bottom plate 71, so that the side baffle does not obstruct the outward protrusion of the toner discharging channel and the toner adding channel 211, as shown in fig. 3. In fig. 3, the waste discharge passage 212 is blocked from view by the front shutter, and therefore, the waste discharge passage 212 is not visible.

According to the above embodiment, alright realize the utility model discloses well. It is worth to say that, on the premise of the above structural design, in order to solve the same technical problem, even if some insubstantial changes or retouching are made in the utility model, the essence of the adopted technical scheme is still the same as the utility model, so it should be in the protection scope of the utility model.

Claims

1. The utility model provides a colored laser printing equipment, be equipped with the carton including printer housing lower part, upper portion is equipped with out the cardboard, printer housing inside is equipped with the pressure roller set that a plurality of groups paper feed provided power, inside the printer housing, the fixation roller at selenium drum work position rear reaches rather than the complex pressure roller, be equipped with the slide rail in the printer, but slide rail sliding connection has the selenium drum support, the selenium drum is placed on the selenium drum support, one side is equipped with motor and the transmission structure of connecting in the printer housing, the transmission structure is when the selenium drum is located the work position, be connected with the one end of selenium drum, drive the sensitization drum in the selenium drum, the developer roll, the roller that charges, the stirring roller rotates, laser emitter in the printer housing shines on the sensitization drum, sensitization drum below is equipped with rather than complex pressure roller, its characterized: the other end of the toner cartridge is provided with a toner adding channel, the inner end of the toner adding channel is communicated with a toner hopper of the toner cartridge, the upper part of the outer end of the toner adding channel is connected with a toner hopper sealing cover in an axial mode, one side, corresponding to the other end of the toner cartridge, of the inner wall of the printer shell is provided with an A connecting channel, the inner end of the A connecting channel corresponds to the toner adding channel of the toner cartridge corresponding to the A connecting channel in position, and the toner cartridge can be contacted and abutted against the A connecting channel when being located at a working position due to the; the outer end of the A connecting channel is positioned outside the printer shell, and the highest point of the A connecting channel is lower than the lowest point when the corresponding carbon powder bin sealing cover is screwed right above the carbon powder adding channel.

2. A color laser printing apparatus according to claim 1, wherein: the outer end of the connecting channel A is detachably connected with a plug.

3. A color laser printing apparatus according to claim 1, wherein: the inner end of the connecting channel A is provided with a sealing ring.

4. A color laser printing apparatus according to claim 1, wherein: the front side of the upper end of the front side of the connection channel A is provided with a return bulge, the lowest point of the return bulge corresponding to the connection channel A is higher than the highest point of the carbon powder bin sealing cover when the carbon powder bin is sealed, and the carbon powder bin sealing cover which is screwed up downwards rotates to seal the carbon powder bin when the toner cartridge support is pulled outwards due to the height of the return bulge.

5. A color laser printing apparatus according to claim 1, wherein: the other end of the toner cartridge is provided with a waste toner discharge channel, the inner end of the waste toner discharge channel is communicated with a waste toner bin of the toner cartridge, the upper part of the outer end of the waste toner discharge channel is connected with a waste toner bin sealing cover in an axial mode, one side, corresponding to the other end of the toner cartridge, of the inner wall of the printer shell is provided with a B connecting channel, the inner end of the B connecting channel corresponds to the waste toner discharge channel of the toner cartridge corresponding to the B connecting channel in position, and the B connecting channel can be contacted and abutted with the B connecting channel when the toner cartridge is positioned at a working position due to the; the outer end of the connecting channel B is positioned outside the printer shell, and the highest point of the connecting channel B is lower than the lowest point when the sealing cover of the waste powder bin corresponding to the connecting channel B is screwed to the position right above the waste powder discharge channel.

6. A color laser printing apparatus according to claim 5, wherein: the inner end of the connecting channel B is provided with a sealing ring.

7. A color laser printing apparatus according to claim 5, wherein: the front side of the upper end of the front side of the connection channel B is provided with a return bulge, the lowest point of the return bulge corresponding to the connection channel B is higher than the highest point of the waste powder bin sealing cover when the carbon powder bin is sealed, and the height of the return bulge enables the waste powder bin sealing cover which is screwed up to downwards rotate when the selenium drum support is pulled outwards to seal the waste powder bin.

8. A color laser printing apparatus according to claim 5, wherein: be equipped with screw rod in the waste powder storehouse, screw rod's the entry that highly is less than waste powder storehouse, waste powder discharge passage highly is less than waste powder storehouse's entry.

9. A color laser printing apparatus according to claim 8, wherein: the outer end of the B connecting channel is detachably connected with a waste powder collecting box.

10. A color laser printing apparatus according to claim 5, wherein: a plurality of toner cartridges are arranged in the printer shell, and carbon powder adding channels and waste powder discharging channels of the toner cartridges are arranged in a staggered mode.