CN113580790A

CN113580790A - Environment-friendly printer

Info

Publication number: CN113580790A
Application number: CN202110913810.6A
Authority: CN
Inventors: 马英
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2021-11-02

Abstract

The invention relates to an environment-friendly printer which is characterized by comprising a first paper conveying roller set, a second paper conveying roller set, a guide structure, a purification chamber, a filter screen and a fan, wherein printed paper is conveyed to a paper outlet through the first paper conveying roller set, a guide surface of the guide structure and the second paper conveying roller set in sequence, and air in the environment-friendly printer is discharged to the outside of the environment-friendly printer through a hole, a cavity, a vent, the filter screen and the fan in sequence.

Description

Environment-friendly printer

Technical Field

The invention relates to the field of printers, in particular to an environment-friendly printer.

Background

When the laser printer works, the photosensitive drum is charged firstly, so that positive charges are distributed on the surface of the photosensitive drum. The printer converts the information to be printed into laser beam information, and the laser beam information is reflected to the photosensitive drum through a reflecting prism inside the printer to be exposed, and then an image which the printer wants to print is formed on the surface of the photosensitive drum. Then, the photosensitive drum adsorbs the carbon powder particles in the carbon powder box to form a carbon powder image on the surface of the photosensitive drum. After the printing paper enters the printer, the printing paper is filled with negative charges before contacting the photosensitive drum, when the printing paper contacts the photosensitive drum, the carbon powder image with the positive charges and the negative charges on the printing paper are mutually attracted, so that the carbon powder image is attached to the printing paper, the outer ring of the carbon powder particles is adsorbed to paper fibers after being heated by the thermal transfer unit, and finally a printing image is formed. Finally, the printer will automatically remove the remaining toner from the photoreceptor drum and restore the potential so that the next cycle can begin.

The carbon powder particles are generally only a few microns, and are difficult to discharge out of the body through metabolism after being inhaled by a human body. Generally, the toner used in the drum contains many metal dusts such as nickel, cobalt and mercury harmful to human body in addition to carbon black, iron oxide and polyester, and the contents of different products are different. In addition, toners also contain known carcinogens such as benzene, aldehydes, styrene, and the like. The color printing ink powder is more excellent in five toxins, such as tributyltin (Tributyzinn), and the secretion of human hormones can be endangered by parts per million, so that the number of sperms of men is reduced, and the women are sterile.

In the whole working link of the printer, in the processes of adsorbing the carbon powder by the photosensitive drum, heating and fixing by the heat transfer unit and removing the carbon powder by the photosensitive drum, the printer can release the carbon powder into the air, so that the environment around the laser printer is polluted. If the user works near the laser printer for a long time, the user can inhale the carbon powder particles, and the health of the user is threatened.

The similar comparative techniques as the present invention are: patent No. 201320681635.3, environmental friendly printer, describes a related solution, in which a fan is disposed behind a printing assembly, and the air flow generated by the fan brings toner on the paper to a non-printing position, which causes blurring of writing or patterns, and also causes vibration of the paper, which blurs the writing or patterns, affecting the printing effect.

Disclosure of Invention

The invention aims to solve the technical problem of reducing the influence of airflow on the printing effect of an environment-friendly printer and provides the environment-friendly printer.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an environmental protection printer, includes the casing, still includes: the pipeline box is a shell and is arranged at the upper part of the shell; the first paper conveying roller group is arranged at the lower part of the pipeline box; the second paper conveying roller group is arranged at the front part of the pipeline box; the guide structure is fixed in the pipeline box and arranged between the first paper conveying roller group and the second paper conveying roller group, a guide surface is arranged on the bottom surface of the guide structure, a cavity is arranged in the guide structure, a vent for communicating air is arranged on the side surface of the guide structure, a plurality of holes are formed in the guide surface and communicated with the cavity, and the cavity is communicated with the vent; the paper which is printed is conveyed to the paper outlet by the first paper conveying roller group, the guide surface of the guide structure and the second paper conveying roller group in sequence; the purifying chamber is a cavity and is arranged on the shell, one end of the purifying chamber is communicated with the outside of the environment-friendly printer, and the other end of the purifying chamber is communicated with the ventilation opening; the fan is arranged in the purifying chamber and used for extracting and discharging air in the environment-friendly printer to the outside of the environment-friendly printer; the filter screen is arranged in the purifying chamber and used for purifying the air in the environment-friendly printer, and the filter screen is positioned on the inner side of the fan; the inside air of environmental protection printer passes through in proper order the hole, the cavity the vent, the filter screen with the fan discharges the environmental protection printer is outside.

When the printer works, after printing is finished, paper is conveyed to the paper outlet through the first paper conveying roller group, the guide surface of the guide structure and the second paper conveying roller group in sequence. Meanwhile, air near the external paper outlet returns to the external environment through the paper outlet, the second paper conveying roller group, the holes in the guide structure, the cavity in the guide structure, the ventilation openings on the side face of the guide structure, the filter screen and the fan in sequence under the action of the fan. According to the invention, the air suction opening is arranged among the first paper conveying roller group, the second paper conveying roller group and the guide structure, so that air in the paper conveying device is discharged to the external environment through the hole in the guide structure, the cavity in the guide structure, the ventilation opening on the side surface of the guide structure, the filter screen and the fan. At this time, the printing of the paper is completed, and the air flow does not flow through the printing assembly, so the air flow does not affect the printing effect.

Further, the second paper transfer roller set includes: the upper roller is arranged in the pipeline box and used for conveying paper in a rotating mode, the upper roller comprises an upper roller shaft connected with a power system and a plurality of roller sleeves fixed on the upper roller shaft, the upper roller shaft is cylindrical, the roller sleeves are circular cylinders, the outer diameters of the roller sleeves are larger than the diameter of the upper roller shaft, the axes of the roller sleeves are overlapped with the axis of the upper roller shaft, and the roller sleeves are uniformly distributed on the upper roller shaft; the lower idler wheels are arranged in the pipeline box through support frames and can rotate freely around the axes of the lower idler wheels, the lower idler wheels are arranged below the roller sleeves and correspond to the roller sleeves one to one, the axes of the lower idler wheels are parallel to the axes of the roller sleeves, the distance between the lower idler wheels and the roller sleeves is adaptive to the thickness of paper, and a plurality of annular depressions are formed in the lower idler wheels.

Toner is a micron-sized small particle that readily adsorbs onto paper. Both sides of the paper may be transported to the outside with toner, causing toner particles to leak into the external environment. According to the invention, the air suction opening is arranged among the first paper conveying roller group, the second paper conveying roller group and the guide structure, so that air flows flowing to the inside of the printer can be generated at the paper outlet, and the air flows can remove ink powder carried on paper. In order to clean both sides of the paper more completely, the roller sleeve is arranged on the upper roller shaft. An air inlet channel is formed between the adjacent roller sleeves, and the upper surface of the paper can be cleaned. The lower rollers and the roller sleeves are correspondingly arranged, and an air inlet channel can be formed between the adjacent lower rollers, so that the lower surface of the paper can be cleaned. The roller sleeves and the lower rollers are uniformly arranged, so that air flow on the upper surface and the lower surface of the cleaning paper can be uniformly distributed, and a better cleaning effect is achieved. The lower roller is set as the driven wheel of the upper roller, so that energy can be saved. There are many gaps in the printer that communicate with the environment, which can cause toner to leak into the environment. Set up the inlet scoop in the printer inside, enable the inside negative pressure that keeps of printer, make the inside air of printer be difficult to reveal in the external environment.

Further, still include a plurality of deep beads, the deep bead set up in on the pipeline box, the deep bead is located between the gyro wheel down.

Because there is not the connecting axle between the gyro wheel down, so can have great air inlet, when the air current was carrying great object, second pass paper cylinder group can not keep off its outside at the printer to lead to printer inside to break down. Through set up before the breach between the gyro wheel down the deep bead can block the great debris of carrying in the air current outside printing, avoids debris to get into the inside harm that causes the printer of printer. And the wind shield is arranged in front of the gap between the lower rollers, so that the area of an air inlet can be reduced, the speed of air flow is increased, and the cleaning effect on paper is enhanced. The lower idler wheel is arranged below the lower idler wheel, dust accumulation can be caused, a plurality of circular concave rings are arranged on the lower idler wheel, a wind shield is arranged in front of the lower idler wheel, air flow can pass through the circular concave rings at the bottom of the lower idler wheel from the lower idler wheel, and the lower portion of the lower idler wheel is cleaned, so that the cleaning range is enlarged.

Further, the guide structure further includes: the paper feeding device comprises a plurality of strip-shaped bulges, wherein the bulges are arranged on the guide surfaces, the extending direction of the bulges is the same as the paper feeding direction, the bulges are uniformly distributed along the direction vertical to the paper feeding direction, all the curved surfaces of the lower surfaces of the bulges are matched with the paper feeding direction, the side surfaces of the bulges are inclined planes, and the side surfaces of the bulges and the guide surfaces form obtuse angles.

The air suction opening is arranged on the guide surface, when paper passes through, the air suction opening can be blocked, the purification process of the air inside the printer is stopped, the paper outlet cannot generate airflow flowing inside the printer, and the paper is conveyed out of the paper outlet and can carry the ink powder to the external environment. Through set up a plurality of on the spigot surface the arch can make and keep a distance between paper and the inlet scoop, avoids the paper to block up the inlet scoop. After the plurality of protrusions are arranged on the guide surface, the guide surface cannot continuously realize the function of guiding the paper because the contact between the guide surface and the paper is avoided. Therefore, the curved surface of the lower surface of the bulge is matched with the paper conveying direction, so that the paper is guided. The side surface of the protrusion forms a right angle or an acute angle with the guide surface to generate an airflow blind area at the right angle or the acute angle, so that the side surface of the protrusion is arranged to be an inclined surface forming an obtuse angle with the guide surface. Under the influence of air current, be in two adjacent the paper of protruding intermediate position can be inside sunken, if sunken too seriously can lead to the phenomenon that takes place the card paper, and under the same quantity, protruding align to grid can furthest reduce the probability that the card paper takes place, and the distance between the arch can be designed according to reality here.

Further, the cavity includes an inclined plane, inclined plane one end set up in the vent lower part, one end set up in a plurality of holes are closest to one side of vent, the front and back end on inclined plane extends to the cavity inner wall.

Since the airflow always travels the shortest distance, the lower side of the vent is in a corner, creating an airflow blind zone, creating toner buildup. When the fan is not working, the air exchange is generated at the part of the printer which is communicated with the external environment due to the movement of molecules. If toner accumulation occurs inside the printer, micron-sized toner may leak into the external environment. One end of the inclined plane is arranged at the lower part of the ventilation opening, and the other end of the inclined plane is arranged at one side of the plurality of holes closest to the ventilation opening, so that the inclined plane can be cleaned by airflow. And the inclined plane can cover the airflow blind area, so that the ink powder is prevented from falling to the airflow blind area.

Further, the method also comprises the following steps: the slide way is arranged in the shell, one end of the slide way extends into the purifying chamber, the other end of the slide way extends to the outside of the environment-friendly printer, a slide rail is arranged in the slide way, one end of the slide rail extends into the purifying chamber, and the other end of the slide rail extends to the outside of the environment-friendly printer; the filter screen cover, the shape size of filter screen cover with the clean room cooperatees, the filter screen cover set up in the slide, filter screen cover both sides be provided with corresponding to the orbital slider of sliding, the slider of filter screen cover both sides imbeds respectively rather than in the corresponding slip track to can move along the slip track, the inside accommodation space that is provided with of filter screen cover, its shape size with the filter screen cooperatees, filter screen cover both sides are provided with the intercommunication the blow vent of accommodation space, filter screen cover side is provided with shakes hands, it is in to shake hands the hand the environmental protection printer is outside.

When the filter screen is used for a long time, the filtering effect of the filter screen is reduced, and the toner can be leaked to the external environment. The setting is used for with the slide that the filter screen taken out can make right the change of filter screen is more convenient, uses the filter screen cover is accomodate the filter screen can be more conveniently right the filter screen removes. And air vents are arranged at two sides of the filter screen sleeve, so that the filter screen can play a role in filtering. The shape size of filter screen cover with the clean room cooperatees, can prevent that the inside air of printer from circumventing the filter screen flows to the printer outside, pollutes external environment. The side of the filter screen sleeve is provided with a handle, so that the filter screen sleeve can be taken out and put in more conveniently.

Further, the method also comprises the following steps: the filter screen cover is arranged on the outermost side of the purification chamber, and a protection distance exists between the filter screen cover and the fan; the fan frame is arranged inside the purifying chamber and is tightly matched with the purifying chamber, and the fan is arranged in the fan frame.

The printer is generally in an environment with paper that touches the fan and can cause damage to the fan. The filter screen cover is arranged on the outermost side of the purifying chamber, and a protection distance is arranged between the filter screen cover and the fan, so that damage to the fan caused by articles such as paper can be prevented. The fan frame can also protect the fan blades of the fan.

Furthermore, the pipeline box and the shell are connected in a sliding manner.

Further, the method also comprises the following steps: the sliding guide rail is arranged in the machine shell, one end of the sliding guide rail extends to the installation position of the pipeline box, and the other end of the sliding guide rail extends to the outside of the machine shell; and the guide rail sliding blocks are arranged on two sides of the pipeline box, are respectively embedded into the corresponding sliding guide rails and can move along the sliding guide rails.

The most frequently occurring fault of the printer is paper jam, a sliding assembly used for dismounting and mounting is arranged for the pipeline box, and the pipeline box can be taken out to remove the fault when the fault such as the paper jam occurs.

The invention has the beneficial effects that:

1. the powdered ink in the inner space of the printer body is collected through the filter screen, so that the inside of the printer is kept clean, and the influence of the powdered ink on the printing effect is prevented.

2. When the paper outlet is in work, the paper outlet can carry leaked toner, the paper outlet can keep an air suction state, the surface of the paper is cleaned, and the paper is prevented from carrying the toner and leaking into the environment.

3. The inlet of the air flow is the paper outlet, the outlet of the air flow is the air duct, and the air flow cannot pass through the printing assembly, so that the air flow cannot appear in the printing assembly, and the printing effect is improved.

4. When the paper is jammed, the pipeline box can be taken out, so that the maintenance is more convenient.

5. According to the invention, after the outside air is sucked, the outside air is purified through the filter screen and then is discharged to the outside, so that the dust concentration in the outside environment air can be reduced.

6. The filter screen in the filter screen sleeve is convenient to replace, and the printer can maintain high purification degree.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic diagram of the principal structure of the present invention;

FIG. 3 is a schematic view of the housing of the present invention;

FIG. 4 is a schematic view of the guide structure of the present invention;

FIG. 5 is a cross-sectional view of a guide structure of the present invention;

description of reference numerals:

1. a housing; 11. a clean room; 2. a first paper transfer roller set; 3. a second paper transfer roller set; 31. an upper roller shaft; 32. a roller sleeve; 33. a lower roller; 4. a filter screen sleeve; 41. a filter screen; 5. a fan frame; 51. a fan; 6. a filter screen cover; 7. a seal ring; 8. a toner cartridge; 9. a guide structure; 91. a guide surface; 92. a hole; 93. a protrusion; 10. a conduit box.

Detailed Description

The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention.

Example 1:

fig. 1 is a schematic diagram of an internal structure of the present invention, and the present invention belongs to an environmental protection printer in the field of printers, which includes a casing 1, and further includes: the pipeline box 10 is a shell and is arranged at the upper part of the machine shell 1; the first paper conveying roller group 2 is arranged at the lower part of the pipeline box 10; the second paper conveying roller group 3 is arranged at the front part of the pipeline box 10; the guide structure 9 is fixed in the pipeline box 10 and arranged between the first paper conveying roller group 2 and the second paper conveying roller group 3, a guide surface 91 is arranged on the bottom surface of the guide structure 9, a cavity is arranged inside the guide structure 9, a vent for communicating air is arranged on the side surface of the guide structure 9, a plurality of holes 92 are formed in the guide surface 91, the holes 92 are communicated with the cavity, and the cavity is communicated with the vent; the paper which has finished printing is conveyed to the paper outlet by the first paper conveying roller group 2, the guide surface 91 of the guide structure 9 and the second paper conveying roller group 3 in sequence; the purifying chamber 11 is a cavity and is arranged on the casing 1, one end of the purifying chamber 11 is communicated with the outside of the environment-friendly printer, and the other end of the purifying chamber 11 is communicated with the ventilation opening; a fan 51 provided inside the clean room 11 for drawing and discharging air inside the eco-printer to the outside of the eco-printer; a filter screen 41 disposed inside the clean room 11 for purifying air inside the environmental protection printer, the filter screen 41 being located inside the fan 51; the air inside the eco-printer is discharged to the outside of the eco-printer through the hole 92, the cavity, the vent, the filter 41, and the fan 51 in this order.

When the printer works, after printing is finished, paper is sequentially conveyed to the paper outlet through the first paper conveying roller group 2, the guide surface 91 of the guide structure 9 and the second paper conveying roller group 3, and meanwhile, air near the external paper outlet sequentially returns to the external environment through the paper outlet, the second paper conveying roller group 3, the hole 92 on the guide structure 9, the cavity inside the guide structure 9, the ventilation opening on the side surface of the guide structure 9, the filter screen 41 and the fan 51 under the action of the fan 51. With the inlet scoop, hole 92 sets up between first pass paper cylinder group 2, second pass paper cylinder group 3 and guide structure 9 promptly, can avoid the air current to cause the influence to printing effect, and the printing of paper has been accomplished this moment, and the printing subassembly can not flow through to the air current. Cavities and vents are provided in the guide structure 9 in order to communicate the inside of the printer with the purge chamber 11, for the purpose of purging the air inside the printer. When the fan 51 is operated, negative pressure can be generated inside the fan to provide power for the flow of the air flow. The filter screen 41 filters the toner in the air flow by its own filtering function, avoiding contamination of the external environment. The number of holes 92 can be selected as desired. The clean room 11 is preferably a rectangular parallelepiped for ease of manufacture, and is disposed right to the right of the guide structure 9. One side that is close to guide structure 9 at clean room 11 is provided with one section pipeline, and inside pipeline right-hand member intercommunication clean room 11, the pipeline left end was connected with the vent gomphosis of guide structure 9 right-hand member, seals through sealing ring 7.

The shape of the pipe box 10 is as shown in fig. 1, and no upper cover is arranged, so that the inside of the pipe box 10 can be observed conveniently, and when a fault occurs, the fault cause can be found more quickly. The left side surface and the right side surface of the pipeline box have elasticity, can deform to a certain extent, and are convenient to install and take out parts in the pipeline box.

As shown in fig. 2, the second paper transfer roller set 3 includes: the upper roller is arranged in the pipeline box 10 and used for conveying paper in a rotating mode, the upper roller comprises an upper roller shaft 31 connected with a power system and a plurality of roller sleeves 32 fixed on the upper roller shaft 31, the upper roller shaft 31 is cylindrical, the roller sleeves 32 are circular cylinders, the outer diameters of the roller sleeves 32 are larger than the diameter of the upper roller shaft 31, the axes of the roller sleeves 32 are overlapped with the axis of the upper roller shaft 31, and the roller sleeves 32 are uniformly distributed on the upper roller shaft 31; the lower rollers 33 are cylindrical, the lower rollers 33 are arranged in the pipeline box 10 through support frames and can freely rotate around the axes of the lower rollers 33, the lower rollers 33 are arranged below the roller sleeves 32, the lower rollers 33 correspond to the roller sleeves 32 one by one, the axes of the lower rollers 33 are parallel to the axes of the roller sleeves 32, the distance between the lower rollers 33 and the roller sleeves 32 is adaptive to the thickness of paper, and a plurality of annular recesses are formed in the lower rollers 33.

Toner is a micron-sized small particle that readily adsorbs onto paper. Both sides of the paper may be transported to the outside with toner, causing toner particles to leak into the outside environment. The air suction opening is formed among the first paper conveying roller group 2, the second paper conveying roller group 3 and the guide structure 9, so that air flow flowing to the inside of the printer can be generated at the paper outlet, and toner carried on paper can be cleaned. In order to clean both sides of the paper more completely, the upper roller shaft 31 is provided with the roller sleeves 32, and an air inlet passage is formed between the adjacent roller sleeves 32, so that the upper surface of the paper can be cleaned. The lower rollers 33 are disposed corresponding to the roller sleeves 32, and an air inlet passage is formed between the adjacent lower rollers 33, so that the lower surface of the paper can be cleaned. The roller sleeve 32 and the lower roller 33 are uniformly arranged, so that air flow for cleaning the upper surface and the lower surface of paper can be uniformly distributed, and a better cleaning effect is achieved. The lower roller 33 is provided as a driven wheel of the upper roller, which can save energy. There are many external gaps of intercommunication on the printer, can lead to the powdered ink to reveal and lead the external environment in, set up the inlet scoop inside the printer, enable the inside negative pressure that keeps of printer, make the inside air of printer be difficult for revealing in the external environment. In this embodiment, the number of the roller sleeves 32 is four, the number of the lower rollers 33 is four, and the number of the annular recesses formed in the lower rollers 33 is four, which can be designed according to the actual situation.

The environmental protection printer further comprises a plurality of wind shields, the wind shields are arranged on the pipeline box 10, and the wind shields are located between the lower rollers 33.

Since there is no connecting shaft between the lower rollers 33, there is a large air inlet, and when the air current carries a large object, the second paper transfer roller set cannot block it outside the printer, thereby causing a malfunction inside the printer. The wind shield is arranged in front of the gap between the lower rollers 33, so that large sundries carried in air flow can be blocked outside the printer, and the printer is prevented from being damaged by the sundries entering the printer. And, set up the deep bead before the breach between lower gyro wheel 33, can reduce into wind gap area, improve the speed of air current, strengthen the clean effect to the paper. The lower part of the lower roller 33 cannot be cleaned, dust accumulation can be caused, a plurality of annular recesses are formed in the lower roller 33, a wind shield is not arranged in front of the lower roller 33, airflow can pass through the annular recesses in the bottom of the lower roller 33 from the lower part of the lower roller 33, the lower part of the lower roller 33 is cleaned, and the cleaning range is enlarged. The number of the wind shields is five in the embodiment, and the wind shields can be designed according to the actual situation.

As shown in fig. 4 and 5, the guide structure 9 further includes: the paper feeding device comprises a plurality of elongated protrusions 93, wherein the protrusions 93 are arranged on a guide surface 91, the extending direction of the shape of each protrusion 93 is the same as the paper feeding direction, the protrusions 93 are uniformly distributed in the direction perpendicular to the paper feeding direction, the curved surfaces of the lower surfaces of all the protrusions 93 are matched with the paper feeding direction, the side surfaces of the protrusions 93 are inclined planes, and an obtuse angle is formed between each side surface of each protrusion 93 and the guide surface 91.

The air suction opening is arranged on the guide surface 91, and when paper passes through the air suction opening, the air suction opening can be blocked, so that the purification process of the air inside the printer is stopped, air flow flowing into the printer cannot be generated at the paper outlet, and at the moment, the paper is conveyed out of the paper outlet and can carry the ink powder to the external environment together. Through set up a plurality of archs 93 on spigot surface 91, can make and keep apart from between paper and the inlet scoop, avoid the paper to block up the inlet scoop. After the plurality of protrusions 93 are arranged on the guide surface 91, because the guide surface 91 is not in contact with paper any more, the guide surface 91 cannot continuously realize the function of guiding the paper, and therefore the curved surface where the lower surface of each protrusion 93 is arranged is matched with the direction of paper conveying to realize the function of guiding the paper. The side surface of the protrusion 93 forming a right angle or an acute angle with the guide surface 91 may generate a dead zone of air flow at the right angle or the acute angle, so the side surface of the protrusion 93 is provided as an inclined surface forming an obtuse angle with the guide surface 91. Under the influence of air current, the paper that is in two adjacent protruding 93 intermediate positions can be inwards sunken, if sunken too seriously can lead to the phenomenon of taking place the card paper, and under the same quantity, protruding 93 align to grid can furthest reduce the probability that the card paper takes place, can be according to the distance between the protruding 93 of actual design. The number of the projections 93 may be designed according to the actual use.

The cavity comprises an inclined plane, one end of the inclined plane is arranged at the lower part of the ventilation opening, one end of the inclined plane is arranged at one side of the holes 92 closest to the ventilation opening, and the front end and the rear end of the inclined plane extend to the inner wall of the cavity.

Since the airflow always travels the shortest distance, the lower side of the vent is in a corner, creating an airflow blind zone, causing toner accumulation. When the fan 51 does not work, the air in the printer communicated with the external environment through the paper outlet can generate air exchange due to the movement of the molecules, and the air exchange can also be generated at the part communicated with the external environment in the printer due to the movement of the molecules. If toner accumulation occurs inside the printer, micron-sized toner may leak into the external environment. One end of the inclined plane is arranged at the lower part of the vent, and the other end of the inclined plane is arranged at one side of the holes 92 closest to the vent, so that the inclined plane can be cleaned by airflow, and the inclined plane can cover the airflow blind area to prevent the toner from falling to the airflow blind area.

The environmental protection printer further includes: the slideway is arranged in the machine shell 1, one end of the slideway extends into the purifying chamber 11, the other end of the slideway extends to the outside of the environment-friendly printer, a sliding rail is arranged in the slideway, one end of the sliding rail extends into the purifying chamber 11, and the other end of the sliding rail extends to the outside of the environment-friendly printer; filter screen cover 4, filter screen cover 4's shape size and clean room 11 cooperate, filter screen cover 4 sets up in the slide, filter screen cover 4 both sides are provided with the slider that corresponds to the slip track, the slider of filter screen cover 4 both sides imbeds respectively rather than in the corresponding slip track, and can move along the slip track, the inside accommodation space that is provided with of filter screen cover 4, its shape size cooperatees with filter screen 41, filter screen cover 4 both sides are provided with the blow vent that communicates accommodation space, filter screen cover 4 side is provided with shakes hands, it is outside to shake hands at the environmental protection printer.

The filter screen sleeve 4 is arranged inside the slide way, the filter screen sleeve 4 is cuboid, the shape and the size of the filter screen sleeve are matched with the inner wall of the slide way, the filter screen sleeve is equivalent to a sliding block and can freely move in the slide way, and the slide way is equivalent to a sliding guide rail at the moment. When filter screen cover 4 is in clean room 11, can closely cooperate with clean room 11, set up the slide that an inner wall is the cuboid directly behind clean room 11, the one end intercommunication external environment of slide, one end intercommunication clean room 11 extends to the preceding internal surface of clean room 11. The slide way comprises a slide way guide surface and a slide way limiting surface, the upper surface and the lower surface of the slide way are slide way limiting surfaces, the front end of the slide way extends to the front inner surface of the purifying chamber 11, the rear end of the slide way extends to the rear surface of the machine shell 1, the upper slide way limiting surface is one centimeter higher than the upper inner surface of the purifying chamber 11, the lower slide way limiting surface is one centimeter lower than the lower inner surface of the purifying chamber 11, the position of the slide block is limited, and the size can be designed according to actual needs. The left and right surfaces of the slide way are slide way guide surfaces, the front end of the slide way extends to the front inner surface of the purification chamber 11, the rear end of the slide way extends to the rear surface of the machine shell 1, the upper end and the lower end of the slide way are vertically connected with the slide way limiting surface, and the slide way guide surfaces are equivalent to sliding rails and used for guiding the slide block. The filter screen sleeve 4 is arranged inside the slide way, the filter screen sleeve 4 is cuboid, the shape and the size of the filter screen sleeve are matched with the inner wall of the slide way, the filter screen sleeve is equivalent to a sliding block and can freely move in the slide way, and the slide way is equivalent to a sliding guide rail at the moment. When the filter screen 4 is in the clean room 11, it can be tightly fitted to the clean room 11, and its rear surface is provided with a grip for easy movement. Be equipped with the cuboid storage chamber in filter screen cover 4 for accomodate filter screen 41, its shape size suits with the storage chamber, the casing thickness between storage chamber and the filter screen cover 4 surface is attenuate as far as possible under the condition that does not influence filter screen cover 4 intensity, the purpose can accomodate more filter screens 41, set up the opening with the storage chamber intercommunication on filter screen cover 4's the left and right sides, its shape is the rectangle, be in filter screen cover 4's the left and right sides center, be separated by one centimetre between four internal walls about its four limits and filter screen cover 4, this place distance can design according to actual demand, the purpose is that the filter screen 41 of accomodating wherein drops outside filter screen cover 4.

After filter screen 41 used for a long time, filter effect of filter screen 41 reduces, can lead to the toner to reveal to external environment, sets up the slide that is used for taking out filter screen 41, can make the change to filter screen 41 more convenient, uses filter screen cover 4 to accomodate filter screen 41, can remove filter screen 41 more conveniently. The air vents are arranged at both sides of the filter screen sleeve 4, so that the filter screen 41 can play a role in filtering. The filter screen cover 4 is matched with the purifying chamber 11 in shape and size, so that the air inside the printer can be prevented from flowing to the outside of the printer by bypassing the filter screen 41 to pollute the external environment. The side of the filter screen sleeve 4 is provided with a handle, so that the filter screen sleeve 4 can be taken out and put in more conveniently.

The environmental protection printer further includes: a filter cover 6 disposed at the outermost side of the clean room 11, wherein a protective distance exists between the filter cover 6 and the fan 51; and a fan frame 5 arranged in the clean room 11, wherein the fan 51 is tightly matched with the clean room 11, and the fan 51 is arranged in the fan frame 5.

The printer is generally in an environment where paper is present, and the fan 51 may be damaged when the paper touches the fan 51. The invention arranges the filter screen cover 6 at the outermost side of the clean room 11, and arranges a protective distance between the filter screen cover 6 and the fan 51, thereby preventing the fan 51 from being damaged by articles such as paper. The fan frame 5 also protects the blades of the fan 51.

The connection between the duct box 10 and the cabinet 1 is a sliding connection.

As shown in fig. 3, the eco-printer further includes: a sliding guide rail arranged in the machine case 1, wherein one end of the sliding guide rail extends to the installation position of the pipeline box 10, and the other end extends to the outside of the machine case 1; and the guide rail sliding blocks are arranged on two sides of the pipeline box 10, are respectively embedded into the corresponding sliding guide rails and can move along the sliding guide rails.

The sliding guide rail symmetry sets up in casing 1 left and right sides inner wall, and the sliding guide rail is that the L type is sunken, including vertical guide rail, transition guide rail and horizontal guide rail, and pipeline box 10 both sides outside is fixed with two square guide rail sliders, suits with sliding guide rail, can realize taking out and installing of pipeline box 10. Set up two guide rail slider, can increase of service life, even the slider wearing and tearing also can be through two slider fixed positions.

The most frequently occurring malfunction of the printer is a paper jam, and a slide assembly for detaching and attaching the duct box 10 is provided to enable the duct box 10 to be taken out and removed when a malfunction such as a paper jam occurs.

The working process of the invention is as follows: when the printer works, after printing is finished, paper is conveyed to the paper outlet through the first paper conveying roller group 2, the protrusion 93 on the guide surface 91 of the guide structure 9 and the second paper conveying roller group 3 in sequence, and meanwhile, air near the external paper outlet returns to the external environment again through the paper outlet, the second paper conveying roller group 3, the hole 92 on the guide structure 9, the cavity inside the guide structure 9, the ventilation opening on the side surface of the guide structure 9, the filter screen 41, the fan 51 and the filter screen cover 6 in sequence under the action of the fan 51. The fan 51 operates to create negative pressure inside the printer to allow outside air to enter the printer from the exit slot to flush out the printed paper being output, to avoid leakage of toner, and to clean the lower position of the lower roller 33. The air mixed with the toner enters the hole 92 through the inclined side of the protrusion 93, passes through the cavity inside the guide structure 9, passes through the inclined surface arranged between the vent and the hole 92, and flows out of the vent. Because the shape of the cavity is designed to prevent the airflow blind area, the airflow blind area can not exist, and the toner can not be accumulated. The air mixed with toner then enters the purge chamber 11 through a passage connecting the vent and the purge chamber 11, and since the filter mesh 4 is tightly combined with the purge chamber 11, there is no case where the air mixed with toner bypasses the filter mesh 41. The filter 41 filters the toner in the air, leaving only clean air to be discharged to the outside environment through the fan 51 and the filter cover 6. After the filter screen 41 is used for a long time, the filter screen sleeve 4 is taken out from the rear of the machine body by means of hand holding, the filter screen 41 in the containing chamber is replaced, and then the filter screen sleeve 4 is installed into the machine body through the slide way, so that the filtering effect is kept. The suction that produces in guide structure 9 department enables paper laminating guide structure 9, can lead the direction of delivery of paper better, avoids the condition of card paper. The guide surface 91 is provided with a projection 93 to prevent the sheet from blocking the hole 92, and the side surface of the projection 93 is formed as an inclined surface forming an obtuse angle with the guide surface 91 to prevent toner from accumulating. After the printer sucks the outside air, the dust in the outside air is purified through the filter screen 41 and then is discharged to the outside, so that the dust concentration in the outside environment air can be reduced, and the human health is protected.

The above-mentioned embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Claims

1. An environmental protection printer, includes casing (1), its characterized in that still includes:

the pipeline box (10) is a shell and is arranged at the upper part of the machine shell (1);

the first paper conveying roller group (2) is arranged at the lower part of the pipeline box (10);

the second paper conveying roller group (3) is arranged at the front part of the pipeline box (10);

the guide structure (9) is fixed in the pipeline box (10) and arranged between the first paper conveying roller group (2) and the second paper conveying roller group (3), a guide surface (91) is arranged on the bottom surface of the guide structure (9), a cavity is arranged in the guide structure (9), a vent for communicating air is arranged on the side surface of the guide structure (9), a plurality of holes (92) are formed in the guide surface, the holes (92) are communicated with the cavity, and the cavity is communicated with the vent;

the paper which is printed is conveyed to the paper outlet by the first paper conveying roller group (2), the guide surface of the guide structure (9) and the second paper conveying roller group (3) in sequence;

the purifying chamber (11) is a cavity and is arranged on the shell (1), one end of the purifying chamber is communicated with the outside of the environment-friendly printer, and the other end of the purifying chamber is communicated with the ventilation opening;

a fan (51) arranged inside the purification chamber (11) and used for drawing and discharging the air inside the environment-friendly printer to the outside of the environment-friendly printer;

the filter screen (41) is arranged in the purification chamber (11) and used for purifying the air in the environment-friendly printer, and the filter screen (41) is positioned on the inner side of the fan (51);

the air inside the environment-friendly printer sequentially passes through the hole (92), the cavity, the ventilation opening, the filter screen (41) and the fan (51) to be discharged to the outside of the environment-friendly printer.

2. An environmental protection printer according to claim 1, wherein the second paper transfer roller set (3) comprises:

the upper roller is arranged in the pipeline box (10) and used for conveying paper in a rotating mode, the upper roller comprises an upper roller shaft (31) connected with a power system and a plurality of roller sleeves (32) fixed on the upper roller shaft (31), the upper roller shaft (31) is cylindrical, the roller sleeves (32) are circular cylinders, the outer diameters of the roller sleeves (32) are larger than the diameter of the upper roller shaft (31), the axes of the roller sleeves (32) are overlapped with the axis of the upper roller shaft (31), and the roller sleeves (32) are uniformly distributed on the upper roller shaft (31);

the pipeline box is characterized in that the lower rollers (33) are cylindrical, the lower rollers (33) are arranged in the pipeline box (10) through support frames and can freely rotate around the axis of the pipeline box, the lower rollers (33) are arranged below the roller sleeves (32), the lower rollers (33) correspond to the roller sleeves (32) one by one, the axis of the lower rollers (33) is parallel to the axis of the roller sleeves (32), the distance between the lower rollers (33) and the roller sleeves (32) is adaptive to the thickness of paper, and a plurality of annular depressions are formed in the lower rollers (33).

3. The environmental protection printer according to claim 2, further comprising a plurality of wind deflectors, wherein the wind deflectors are disposed on the duct box and located between the lower rollers (33).

4. The environmental protection printer according to claim 1, wherein the guide structure (9) further comprises:

a plurality of rectangular shape protruding (93), protruding (93) set up in on spigot surface (91), the extending direction of the shape of arch (93) is the same with the biography paper direction, protruding (93) along with pass paper direction vertically direction evenly distributed, all the lower surface place curved surface of arch (93) with pass the cooperation of paper direction, protruding (93) side is the inclined plane, the side of arch (93) with be the obtuse angle between spigot surface (91).

5. The environmental protection printer of claim 1, wherein the cavity includes a bevel, one end of the bevel is disposed at a lower portion of the vent, one end of the bevel is disposed at a side of the plurality of holes closest to the vent, and front and rear ends of the bevel extend to an inner wall of the cavity.

6. The environmental protection printer according to claim 1, further comprising:

the slideway is arranged in the shell (1), one end of the slideway extends into the purifying chamber (11), the other end of the slideway extends to the outside of the environment-friendly printer, a sliding track is arranged in the slideway, one end of the sliding track extends into the purifying chamber (11), and the other end of the sliding track extends to the outside of the environment-friendly printer;

filter screen cover (4), the shape size of filter screen cover (4) with clean room (11) cooperate, filter screen cover (4) set up in the slide, filter screen cover (4) both sides be provided with corresponding to the orbital slider slides, the slider of filter screen cover (4) both sides imbeds respectively rather than in the corresponding slip track to can remove along the slip track, filter screen cover (4) inside is provided with accommodation space, its shape size with filter screen (41) cooperate, filter screen cover (4) both sides are provided with the intercommunication accommodation space's blow vent, filter screen cover (4) side is provided with shakes hands, the shake hands are in the environmental protection printer is outside.

7. The environmental protection printer according to claim 1, further comprising:

a filter screen cover (6) arranged at the outermost side of the purification chamber (11), wherein a protective distance exists between the filter screen cover (6) and the fan (51);

the fan frame (5) is arranged inside the purifying chamber, the fan frame (5) is tightly matched with the purifying chamber (11), and the fan (51) is arranged in the fan frame.

8. An environmental protection printer according to claim 1, wherein the connection between the conduit box (10) and the housing (1) is a sliding connection.

9. The environmental protection printer according to claim 8, further comprising:

the sliding guide rail is arranged in the machine shell (1), one end of the sliding guide rail extends to the installation position of the pipeline box (10), and the other end of the sliding guide rail extends to the outside of the machine shell (1);

the guide rail sliding blocks are arranged on two sides of the pipeline box (10), are respectively embedded into the corresponding sliding guide rails and can move along the sliding guide rails.