CN220639266U - Secondary ink box for ink-jet printer - Google Patents

Abstract

The utility model relates to a secondary ink box for an ink-jet printer, which comprises a secondary ink box body, wherein the secondary ink box body comprises a box body and a box cover which are sealed mutually, one side of the box body adjacent to the box cover is provided with an ink cavity, the ink cavity is used for containing ink, and the box body is provided with an interface which enables the ink cavity to be respectively communicated with an ink inlet and an ink outlet of a main ink tank, so that a first circulating ink path is formed between the ink cavity and the main ink tank; the ink box body is provided with an interface which enables the ink cavity to be respectively communicated with an ink inlet and an ink outlet of the printing spray head, so that a second circulating ink path is formed between the ink cavity and the printing spray head; the outside of ink chamber is equipped with level sensor, level sensor is non-contact level sensor. The utility model has the beneficial effects of good effect of preventing ink from settling and drying, accurate ink quantity detection, compact structure and better printing effect.

Description

Secondary ink box for ink-jet printer

Technical Field

The utility model relates to the technical field of ink-jet printing equipment, in particular to a secondary ink box for an ink-jet printer.

Background

The automobile glass is visible everywhere in life, and can be generally divided into front windshield glass, rear windshield glass, door glass, triangular window glass and skylight glass, and from the aspect of manufacturing technology, the automobile glass processing is mainly divided into three steps of cutting large sheets, cutting, grinding, washing, baking and printing, wherein in the printing step, the printed objects mainly comprise three steps: black border, heater wire and trademark. Traditional automobile glass printing adopts a screen printing mode, namely, glass screen printing is performed on glass products by using a screen printing plate and glass glaze. The glass glaze is also called glass ink, and is a pasty printing material formed by mixing coloring materials and binder, wherein the coloring materials comprise inorganic pigment and low-melting-point fluxing agent (lead glass powder), and the binder is commonly called as plate benefiting oil in the glass screen printing industry. The printed glass product is fired in a furnace at 520-600 ℃ to form patterns by consolidating the glaze printed on the surface of the glass.

However, the glass screen printing process is easy to have quality problems such as plate pasting, pinhole phenomenon, bubble in ink, outward expansion of printing size, spot shape in image-text part and dark tone part, and the like. The reasons for these problems are mostly due to the influence of the printing environment, the specificity of the glass ink and the defects of some uses of the screen printing plate itself, for example, the glass surface is not treated cleanly, dirt such as watermarks, fingerprints, mimeographies, dust particles and the like can cause the paste plate, the volatilization solvent in the glass ink is volatilized quickly due to the excessively high temperature and the relatively low humidity of a workshop, or the fluidity of the glass ink is deteriorated due to the excessively low temperature of the workshop, the viscosity of the ink is increased, the meshes of the screen printing plate are blocked, or the coloring material in the glass ink is separated from the solvent, precipitation is generated, and the meshes of the screen printing plate are blocked, so that the printing quality is affected. In addition, with the advent of the information age, the production of automobile glass is also continuously adapted to the needs of the age, for example, the corner mark of the front windshield will gradually evolve into two-dimension codes representing the identity of each automobile, the two-dimension codes can trace back the country of production, manufacturing company or manufacturer (looking up price, reference, preferential policy), automobile model, brand name, automobile series, automobile body form, engine model, automobile model, safety protection device model, inspection number, assembly factory name, factory number and the like of the automobile, and the information including the engine, transmission, braking system and the like configured by the automobile manufacturer can be scanned and read, so the printing of the automobile corner mark is approaching to personalized customization, and the traditional screen printing cannot be adapted to the customization needs due to the limitation of plate making.

Therefore, the mode of printing marks, black edges, heating wires and the like on the automobile glass by adopting a variable data ink-jet printing technology through an ink-jet printer is generated, so that the personalized customization requirement of the automobile glass is met. In the ink supply system of the ink-jet printer, the glass ink has low fluidity, which is easy to cause ink path blockage, and the glass ink has high fluidity, which is easy to cause ink drop diffusion after printing, so that printed patterns are fuzzy and the boundaries are unclear, and particularly, the subsequent reading and identification of the patterns of the type of two-dimensional codes can be influenced; in addition, the content of the lead glass powder in the glass ink entering the printing nozzle is also required to be in a proper proportion, if the proportion of the lead glass powder is too large, the nozzle of the printing nozzle is extremely easy to be blocked, and the insufficient content of the lead glass powder can cause insufficient adhesive force of a pattern on glass after subsequent firing, so that the quality requirement cannot be met.

In the ink supply system of the ink jet printer in the prior art, a secondary ink box is usually arranged in an ink path which is close to a printing nozzle, ink flows into the secondary ink box from a main ink tank, and then the secondary ink box supplies ink to each printing nozzle. The liquid level sensor in the prior art is mostly a contact type liquid level sensor and needs to be arranged in a secondary ink box, such as a secondary ink box disclosed in Chinese patent CN103832080B, and comprises an ink box body and an ink box cover, wherein a sensor mounting hole is formed in the horizontal part of the ink box cover and is used for mounting the liquid level sensor, and the liquid level sensor is a secondary liquid level float sensor. The secondary liquid level float sensor is a contact type liquid level sensor, the contact type liquid level sensor needs to be in direct contact with liquid, the liquid level height is measured by measuring the conductivity or the capacitance of the liquid, but for special ink such as glass ink, the consistency and the viscosity are higher, when the liquid level rises and falls, more ink still adheres to the liquid level sensor, and the liquid level sensor can be caused to erroneously measure to be a high liquid level, so that the secondary ink box lacks ink.

Therefore, how to avoid ink precipitation in the secondary ink cartridge and how to accurately measure the liquid level in the secondary ink cartridge becomes a key technical problem to be solved when the ink jet printer prints glass.

Disclosure of Invention

The utility model aims to provide a secondary ink box for an ink-jet printer, which solves the defects in the prior art, and the technical problem to be solved by the utility model is realized by the following technical scheme.

The secondary ink box for the ink-jet printer comprises a secondary ink box body, wherein the secondary ink box body comprises a box body and a box cover which are sealed mutually, one side of the box body adjacent to the box cover is provided with an ink cavity, the ink cavity is used for containing ink, and the box body is provided with an interface which enables the ink cavity to be respectively communicated with an ink inlet and an ink outlet of a main ink tank, so that a first circulating ink path is formed between the ink cavity and the main ink tank; the ink box body is provided with an interface which enables the ink cavity to be respectively communicated with an ink inlet and an ink outlet of the printing spray head, so that a second circulating ink path is formed between the ink cavity and the printing spray head; the outside of secondary ink horn body is equipped with level sensor, level sensor is non-contact level sensor for detect the ink volume in the ink chamber.

Preferably, an ink inlet hole communicated with the ink cavity is formed in the upper end of the box body, an ink outlet hole I communicated with the ink cavity is formed in the bottom end of the box body, the ink inlet hole is communicated with an ink outlet of the main ink tank, the ink outlet hole I is communicated with an ink inlet of the main ink tank, and a first circulating ink path is formed between the main ink tank and the ink cavity through the ink inlet hole and the ink outlet hole I; the bottom of the box body is provided with an ink outlet II communicated with the ink cavity, the upper end of the box body is provided with an ink return hole communicated with the ink cavity, the ink outlet II is communicated with an ink inlet of the printing spray head, the ink outlet of the printing spray head is communicated with the ink return hole, and a second circulating ink path is formed between the printing spray head and the ink cavity through the ink outlet II and the ink return hole.

Preferably, a V-shaped groove is arranged at the bottom of the ink cavity in the box body, the ink outlet I is arranged at the lowest center of the V-shaped groove, and the ink outlet II is arranged on the inclined edge of the V-shaped groove.

Preferably, the lower end of the ink inlet hole is provided with an ink inlet pipe, the lower end of the ink return hole is provided with an ink return pipe, and the lengths of the ink inlet pipe and the ink return pipe are not shorter than one half of the height of the ink cavity.

Preferably, the lid includes lid frame and apron, the apron is made by non-metal transparent material, the apron lock in the outside of ink chamber, the lid frame locate the outside of apron and with box body fixed connection, the lid size with the size phase-match of ink chamber, level sensor locates on the lateral surface of apron.

Preferably, the liquid level sensor includes a high liquid level sensor and a low liquid level sensor.

Preferably, a groove is formed in the periphery of the ink cavity on the box body, and a sealing ring is arranged in the groove.

Preferably, a heating plate is mounted on the cartridge body on the opposite side of the ink chamber.

Preferably, the box body is provided with a temperature sensor for detecting the temperature of the ink in the ink cavity.

Preferably, the box body is provided with a thermal protector.

In the utility model, the secondary ink box body is arranged between the main ink tank and the printing nozzle, the secondary ink box body is used for continuously supplying ink to the printing nozzle, the secondary ink box body is closer to the printing nozzle, and the ink flowing out from the secondary ink box body almost directly enters the printing nozzle for printing. In the prior art, the ink in the main ink tank is usually supplied into the secondary ink box and then directly supplied into the printing spray head for printing patterns, but the glass ink is prevented from being deposited too much to block the printing spray head or an ink tube due to the characteristics of easy deposition and easy drying of the glass ink, so that the glass ink is always in a flowing state, the ink is prevented from being deposited due to long-time standing, the ink entering the printing spray head has viscosity and fluidity suitable for printing, and all components in the ink are in proper proportion, so that the printing quality is higher. For this purpose, the secondary ink box body is provided with an interface which enables the ink cavity to be respectively communicated with the ink inlet and the ink outlet of the main ink tank so as to form a first circulating ink path between the ink cavity and the main ink tank, and the secondary ink box body is provided with an interface which enables the ink cavity to be respectively communicated with the ink inlet and the ink outlet of the printing spray head so as to form a second circulating ink path between the ink cavity and the printing spray head, and the circulating power of the first circulating ink path and the second circulating ink path are provided by an ink pump.

When the ink-jet printer works, the ink pump continuously pumps glass ink in the main ink tank into the ink cavity of the secondary ink box body, the glass ink in the ink cavity is supplied into the printing spray head through the ink pump, and the printing spray head prints patterns on glass media according to a printing task; meanwhile, the glass ink in the secondary ink box body is continuously pumped into the main ink tank by a pump, so that the glass ink between the secondary ink box body and the main ink tank is continuously in a flowing state, and excessive precipitation of the glass ink in the secondary ink box body and the main ink tank due to standing can be avoided; in addition, the glass ink in the ink storage cavity of the printing spray head continuously flows back to the ink cavity in the secondary ink box body through the pump, so that the glass ink between the secondary ink box body and the printing spray head is also in a continuous flowing state, and the blockage of the glass ink to spray holes or ink path pipelines during printing is further avoided, and the printing effect is better.

Because the contact type liquid level sensor is easy to hang ink when detecting the ink quantity of the glass ink, the detection is inaccurate, so the liquid level sensor in the embodiment adopts a non-contact type liquid level sensor which is arranged outside the secondary ink box body and is not in direct contact with the glass ink, the detection result is more accurate, the ink path cannot be polluted, the non-contact type liquid level sensor is small in volume and does not occupy the space inside the secondary ink box body, and the structure of the secondary ink box is more compact.

The heating sheet is used for heating the glass ink in the ink cavity, so that the glass ink is kept at a proper temperature to have proper fluidity and viscosity, and the printing effect is better.

In conclusion, the secondary ink box for the ink-jet printer has the advantages of good effect of preventing ink from settling and drying, accurate ink quantity detection, compact structure and better printing effect.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of an explosive structure according to the present utility model;

FIG. 3 is a schematic view of another angle structure of the present utility model;

FIG. 4 is a schematic view of the structure of the case according to the present utility model;

FIG. 5 is a schematic view of the structure of the cover frame of the present utility model;

the reference numerals in the drawings are in turn: 1. the ink box comprises a box body, 11, a sinking groove, 12, an ink cavity, 13, an ink outlet I,14, an ink outlet II,15, an ink inlet, 151, an ink inlet pipe, 16, an ink return hole, 161, an ink return pipe, 17, an air port, 18, a groove, 19, a groove, 21, a cover frame, 211, an empty groove, 212, a convex plate I,213, a mounting rack I,214, a convex plate II,215, a mounting rack II,22, a cover plate, 3, a sealing ring, 4, a liquid level sensor, 5, a quick-plug elbow, 6, a quick-plug straight head, 7, a thermal protector, 8, a temperature sensor, 9 and a heating plate.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Example 1:

referring to fig. 1 and 2, there is shown a secondary ink cartridge for an ink jet printer, the improvement comprising: the ink box comprises a secondary ink box body, wherein the secondary ink box body comprises a box body 1 and a box cover which are sealed with each other, one side of the box body 1 adjacent to the box cover is provided with an ink cavity 12, the ink cavity 12 is used for containing ink, and the box body 1 is provided with an interface which enables the ink cavity 12 to be respectively communicated with an ink inlet and an ink outlet of a main ink tank, so that a first circulating ink path is formed between the ink cavity 12 and the main ink tank; the box body 1 is provided with an interface which enables the ink cavity 12 to be respectively communicated with an ink inlet and an ink outlet of the printing nozzle, so that a second circulating ink path is formed between the ink cavity 12 and the printing nozzle; the outside of secondary ink horn body is equipped with level sensor 4, level sensor 4 is non-contact level sensor, is used for detecting the ink volume in the ink chamber 12.

In this embodiment, the secondary ink box body sets up between main ink tank and printing the shower nozzle, and the secondary ink box body is used for continuously supplying ink to printing the shower nozzle, and the secondary ink box body is nearer apart from printing the shower nozzle, and the ink that flows from its inside almost directly gets into printing the shower nozzle and prints. In the prior art, the ink in the main ink tank is usually supplied into the secondary ink box and then directly supplied into the printing spray head for printing patterns, but the glass ink is prevented from being deposited too much to block the printing spray head or an ink tube due to the characteristics of easy deposition and easy drying of the glass ink, so that the glass ink is always in a flowing state, the ink is prevented from being deposited due to long-time standing, the ink entering the printing spray head has viscosity and fluidity suitable for printing, and all components in the ink are in proper proportion, so that the printing quality is higher. For this purpose, the secondary ink cartridge body is provided with interfaces for respectively communicating the ink chamber 12 with the ink inlet and the ink outlet of the main ink tank, so that a first circulating ink path is formed between the ink chamber 12 and the main ink tank, and interfaces for respectively communicating the ink chamber 12 with the ink inlet and the ink outlet of the printing nozzle are provided on the secondary ink cartridge body, so that a second circulating ink path is formed between the ink chamber 12 and the printing nozzle, and the circulating power of the first circulating ink path and the second circulating ink path are provided by the ink pump.

When the ink-jet printer works, the ink pump continuously pumps glass ink in the main ink tank into the ink cavity 12 of the secondary ink box body, the glass ink in the ink cavity 12 is supplied into the printing nozzle through the ink pump, and the printing nozzle prints patterns on glass media according to a printing task; meanwhile, the glass ink in the secondary ink box body is continuously pumped into the main ink tank by a pump, so that the glass ink between the secondary ink box body and the main ink tank is continuously in a flowing state, and excessive precipitation of the glass ink in the secondary ink box body and the main ink tank due to standing can be avoided; in addition, the glass ink in the ink storage cavity of the printing spray head continuously flows back to the ink cavity 12 in the secondary ink box body through the pump, so that the glass ink between the secondary ink box body and the printing spray head is also in a continuous flowing state, and the blockage of the glass ink to spray holes or ink path pipelines during printing is further avoided, and further the printing effect is better.

Because the contact type liquid level sensor is easy to detect inaccuracy due to ink hanging when detecting the ink quantity of the glass ink, the liquid level sensor 4 in the embodiment adopts the non-contact type liquid level sensor which is arranged outside the secondary ink box body and is not in direct contact with the glass ink, the detection result is more accurate, the ink path cannot be polluted, the non-contact type liquid level sensor is small in volume and does not occupy the space inside the secondary ink box body, and the structure of the secondary ink box is more compact.

The secondary ink box for the ink-jet printer has the advantages of good effect of preventing ink from settling and drying, accurate ink quantity detection, compact structure and better printing effect.

Further, a groove 18 is formed in the outer periphery of the ink cavity 12 on the box body 1, and a sealing ring 3 is installed in the groove 18.

Further, a sinking groove 11 is formed on one side of the box body 1 adjacent to the box cover, and the groove 18 and the ink cavity 12 are both arranged in the sinking groove 11.

Further, referring to fig. 3, a heater chip 9 is mounted on the cartridge 1 on the opposite side of the ink chamber 12.

Further, the cartridge 1 is provided with a temperature sensor 8 for detecting the temperature of the ink in the ink chamber 12.

Further, a thermal protector 7 is arranged on the box body 1.

In this embodiment, the heating sheet 9 is used to heat the glass ink in the ink chamber 12 to keep it at a proper temperature to have proper fluidity and viscosity, so that the printing effect is better. The temperature of the heating plate 9 can be adjusted according to the detected temperature of the ink by the temperature sensor 8, so that the automatic and thermal protector 7 is more automatic, the over-high temperature of the heating plate 9 caused by the failure of the temperature sensor 8 can be avoided, and the reliability is stronger.

Further, a groove 19 is formed in the side face of the box body 1, and the temperature sensor 8 and the thermal protector are arranged in the groove 19.

Example 2:

on the basis of embodiment 1, referring to fig. 4, an ink inlet 15 communicated with the ink cavity 12 is formed at the upper end of the box body 1, an ink outlet I13 communicated with the ink cavity 12 is formed at the bottom end of the box body 1, the ink inlet 15 is communicated with an ink outlet of a main ink tank, the ink outlet I13 is communicated with an ink inlet of the main ink tank, and a first circulation ink path is formed between the main ink tank and the ink cavity 12 through the ink inlet 15 and the ink outlet I13; the bottom of the box body 1 is provided with an ink outlet II14 communicated with the ink cavity 12, the upper end of the box body 1 is provided with an ink return hole 16 communicated with the ink cavity 12, the ink outlet II14 is communicated with an ink inlet of a printing spray head, the ink outlet of the printing spray head is communicated with the ink return hole 16, and a second circulating ink path is formed between the printing spray head and the ink cavity 12 through the ink outlet II14 and the ink return hole 16.

Further, the upper ends of the ink inlet hole 15 and the ink return hole 16 are respectively provided with a quick-insertion elbow 5, so that the ink tube can be conveniently connected and detached.

Furthermore, the lower ends of the ink outlet I13 and the ink outlet II14 are respectively provided with a quick plug-in straight head 6, so that the ink tube can be conveniently plugged and pulled out.

Further, the cartridge 1 is provided with an air port 17 for communicating the ink chamber 12 with the atmosphere.

Further, a quick-insertion elbow 5 is installed at the upper end of the air port 17, and the quick-insertion elbow 5 is connected with a filter.

Further, a V-shaped groove is formed in the bottom of the ink chamber 12 in the box body 1, the ink outlet I13 is formed in the lowest center of the V-shaped groove, and the ink outlet II14 is formed in the inclined edge of the V-shaped groove.

Further, referring to fig. 2, the ink inlet hole 15 is provided with an ink inlet tube 151 at a lower end thereof, the ink return hole 16 is provided with an ink return tube 161 at a lower end thereof, and the lengths of the ink inlet tube 151 and the ink return tube 161 are not shorter than half the height of the ink chamber 12.

In this embodiment, the viscosity, fluidity and proportion of each component of the ink at the ink outlet hole II14 provided on the inclined edge of the V-shaped groove are more suitable for printing, because the secondary ink box body is vertically placed, the lower the glass ink in the ink cavity 12 is not required to gradually decrease from bottom to top due to the action of gravity, i.e. the thinner the glass ink is, the less suitable for printing, whether the glass ink is supplied into the ink cavity 12 from the main ink tank or the glass ink flows back into the ink cavity 12 from the printing nozzle, the length of the ink inlet pipe 151 and the ink return pipe 161 is not shorter than half the height of the ink cavity 12, the lower ends of the ink inlet pipe 151 and the ink return pipe 161 are usually placed below the liquid level in the ink cavity 12, so air bubbles are not generated due to falling from above the liquid level, and the glass ink at the lower part of the ink cavity 12 has more suitable viscosity and fluidity for printing due to being just supplied from the main ink tank or just pumped out from the printing nozzle, and the proportion of each component is also suitable for printing by the printing nozzle, and the proportion of each component is better for printing by the ink is supplied into the ink cavity 12 via the ink pump II by the pump II; the bottom of the ink chamber 12 is provided with a V-shaped groove, so that even a small amount of sediment is generated in the secondary ink box body, the sediment is mainly accumulated at the bottom of the V-shaped groove, and the secondary ink box body is pumped into the main ink tank for circulation through the ink outlet I13, so that the sediment in the secondary ink box body is furthest reduced. The secondary ink box in the embodiment reduces the occurrence of precipitation, and simultaneously enables the glass ink supplied to the printing nozzle to be in an optimal printing state, so that the printing effect is better.

Example 3:

on the basis of embodiment 1 or 2, referring to fig. 1 and 2, the lid 2 includes a lid frame 21 and a cover plate 22, the cover plate 22 is made of a non-metal transparent material, the cover plate 22 is buckled on the outer side of the ink cavity 12, the lid frame 21 is disposed on the outer side of the cover plate 22 and fixedly connected with the box body 1, the size of the cover plate 22 is matched with the size of the ink cavity 12, and the liquid level sensor 4 is disposed on the outer side surface of the cover plate 22.

In this embodiment, the cover 22 is made of a non-metal transparent material, on the one hand, the non-contact liquid level sensor cannot penetrate through the metal material, so that the non-metal material is adopted for the cover 22 to easily detect the ink amount in the ink chamber 12 by the non-contact liquid level sensor; on the other hand, the cover plate 22 made of transparent material also plays a role of an observation window, so that the ink change state of the ink in the secondary ink box body and other conditions in the ink cavity 12 can be observed conveniently, and the optimization of the ink supply system is facilitated.

Further, the cover plate 22 is made of tempered glass.

Further, the liquid level sensor 4 includes a high liquid level sensor and a low liquid level sensor.

In this embodiment, the high level sensor is used to avoid the excessive high ink level in the ink chamber 12, and if the ink level is higher than the high level sensor, a signal is sent to make the ink pump to pump the ink in the secondary ink cartridge body out of the main ink tank more quickly; the low level sensor is used to avoid the lack of ink in the print head due to too low an amount of ink in the ink chamber 12, and if the amount of ink is below the position of the low level sensor, a signal is sent to cause the ink pump to pump more ink from the main ink tank into the secondary ink cartridge body.

Further, referring to fig. 5, the cover frame 21 is provided with a hollow 211, and the liquid level sensor 4 is mounted in the hollow of the cover frame 21 and is bonded to the outer side surface of the cover plate 22.

Further, a convex plate I212 protruding toward the hollow groove 211 is provided at the upper part of the cover frame 21, a mounting frame I213 is provided at a side edge of the convex plate I212, and the high liquid level sensor is mounted on the mounting frame I213 and is mutually attached to the cover plate 22; the bottom of the cover frame 21 is provided with a convex plate II214 protruding towards the empty groove 211, the side edge of the convex plate II214 is provided with a mounting rack II215, and the low liquid level sensor is mounted on the mounting rack II215 and mutually attached to the cover plate 22.

It should be noted that the foregoing detailed description is exemplary and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly indicates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or groups thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways, such as rotated 90 degrees or at other orientations, and the spatially relative descriptors used herein interpreted accordingly.

In the above detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, like numerals typically identify like components unless context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A secondary ink cartridge for an inkjet printer, characterized in that: the ink box comprises a secondary ink box body, wherein the secondary ink box body comprises a box body (1) and a box cover which are sealed with each other, one side of the box body (1) adjacent to the box cover is provided with an ink cavity (12), the ink cavity (12) is used for containing ink, and the box body (1) is provided with an interface which enables the ink cavity (12) to be respectively communicated with an ink inlet and an ink outlet of a main ink tank so as to enable a first circulating ink path to be formed between the ink cavity (12) and the main ink tank; the ink box comprises a box body (1), wherein an ink inlet and an ink outlet of a printing nozzle are respectively communicated with an ink cavity (12) on the box body, so that a second circulating ink path is formed between the ink cavity (12) and the printing nozzle; the outside of secondary ink horn body is equipped with liquid level sensor (4), liquid level sensor (4) are non-contact liquid level sensor for detect the ink volume in ink chamber (12).

2. A sub-cartridge for an inkjet printer according to claim 1, wherein: the upper end of the box body (1) is provided with an ink inlet (15) communicated with the ink cavity (12), the bottom end of the box body (1) is provided with an ink outlet I (13) communicated with the ink cavity (12), the ink inlet (15) is communicated with an ink outlet of a main ink tank, the ink outlet I (13) is communicated with an ink inlet of the main ink tank, and a first circulating ink path is formed between the main ink tank and the ink cavity (12) through the ink inlet (15) and the ink outlet I (13); the bottom of box body (1) be equipped with play black hole II (14) that ink chamber (12) are linked together, the upper end of box body (1) be equipped with return black hole (16) that ink chamber (12) are linked together, play black hole II (14) are linked together with the ink inlet of printing the shower nozzle, the play black mouth of printing the shower nozzle with return black hole (16) are linked together, print the shower nozzle with pass through between ink chamber (12) play black hole II (14) with return black hole (16) form the second circulation ink way.

3. A sub-cartridge for an inkjet printer according to claim 2, wherein: the bottom of the ink cavity (12) in the box body (1) is provided with a V-shaped groove, the ink outlet hole I (13) is arranged at the lowest center of the V-shaped groove, and the ink outlet hole II (14) is arranged on the inclined edge of the V-shaped groove.

4. A sub-cartridge for an inkjet printer according to claim 2, wherein: the lower end of the ink inlet hole (15) is provided with an ink inlet pipe (151), the lower end of the ink return hole (16) is provided with an ink return pipe (161), and the lengths of the ink inlet pipe (151) and the ink return pipe (161) are not shorter than half of the height of the ink cavity (12).

5. A sub-cartridge for an inkjet printer according to claim 1, wherein: the lid includes lid frame (21) and apron (22), apron (22) are made by non-metal transparent material, apron (22) lock in the outside of china ink chamber (12), lid frame (21) locate the outside of apron (22) and with box body (1) fixed connection, the size of apron (22) with the size phase-match of china ink chamber (12), level sensor (4) are located on the lateral surface of apron (22).

6. A sub-cartridge for an inkjet printer according to claim 1, wherein: the liquid level sensor (4) comprises a high liquid level sensor and a low liquid level sensor.

7. A sub-cartridge for an inkjet printer according to claim 1, wherein: the ink box is characterized in that a groove (18) is formed in the periphery of the ink cavity (12) on the box body (1), and a sealing ring (3) is arranged in the groove (18).

8. A sub-cartridge for an inkjet printer according to claim 1, wherein: and heating plates (9) are arranged on the opposite sides of the ink cavity (12) on the box body (1).

9. The secondary ink cartridge for an inkjet printer according to claim 8, wherein: the box body (1) is provided with a temperature sensor (8) for detecting the temperature of the ink in the ink cavity (12).

10. A sub-cartridge for an inkjet printer according to claim 9, wherein: the box body (1) is provided with a thermal protector (7).