CN111890804A

CN111890804A - Print head cartridge, method of regenerating print head cartridge, and ink jet printer

Info

Publication number: CN111890804A
Application number: CN202010781450.4A
Authority: CN
Inventors: 杨晓锋; 周毅; 何永刚
Original assignee: Print Rite Unicorn Image Products Co Ltd
Current assignee: Print Rite Unicorn Image Products Co Ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2020-11-06

Abstract

The invention provides a printing head ink box, a regeneration method of the printing head ink box and an ink-jet printer, wherein the printing head ink box comprises a box body, the upper end of the box body is open, an ink-jet head is arranged at the lower end of the box body, and a chip is arranged on the side wall of the box body; the side wall of the filling box is provided with a movable sealing element, the sealing element is used for sealing the ink outlet, the ink outlet can be opened after the sealing element moves, and ink in the filling box flows into the box body. The ink jet printer may be equipped with the above-described print head cartridge. The ink replenishing container can conveniently perform ink filling operation in the box body, and is simple in structure and low in production cost.

Description

Print head cartridge, method of regenerating print head cartridge, and ink jet printer

Technical Field

The invention relates to the field of printing consumables, in particular to a printing head ink box, a regeneration method of the printing head ink box and an ink-jet printer.

Background

The electronic imaging equipment is taken as common office equipment, great convenience is provided for modern office, the common electronic imaging equipment comprises a printer, a copying machine and the like, the existing printer is divided into an ink-jet printer and a laser printer, and the ink-jet printer uses an ink box containing ink as an ink box to jet the ink to paper so as to form characters or patterns to be printed on the paper; the laser printer uses a toner cartridge containing toner as an ink cartridge to form characters or patterns to be printed on a medium.

Referring to fig. 1, a conventional color inkjet printer has a cabinet 11, and the inkjet printer shown in fig. 1 omits a tray of the cabinet 11. The casing 11 is provided with a movement 12 of the ink jet printer and with a slide along which a carriage 14 is driven by a motor (not visible in fig. 1). An adapter plate (not visible in fig. 1) is provided in the carriage 14, and communicates with the movement 12 via the flat cable 13.

A plurality of ink cartridges 15 are detachably mounted on the carriage 14, and different ink cartridges 15 contain different color inks. The ink cartridge 15 has a cartridge body enclosing a cavity for containing ink, the lower end of the cavity is provided with an ink outlet, and the ink in the cavity flows out through the ink outlet and supplies ink to an ink supply needle of the printing carriage 14.

Since the ink cartridge 15 has a limited capacity of storing ink, when the ink in the ink cartridge 15 is used up, the ink cartridge 15 is usually replaced with a new one, which results in that the used ink cartridge 15 cannot be reused. Since the amount of the ink cartridge 15 used is very large, if the ink cartridge 15 is discarded after the ink cartridge 15 is used, on one hand, environmental pollution is caused, and on the other hand, waste of resources is caused. For this reason, reuse of the ink cartridge is considered.

The ink cartridge can be reused by refilling the ink cartridge with ink, for example, by designing a device, such as a syringe, for refilling the ink cartridge, and opening an ink filling hole on the ink cartridge, and then refilling the ink cartridge with ink by using the syringe or other devices. For example, a separate external ink replenishment bottle is used to provide subsequent ink replenishment to the cartridge. However, this method is cumbersome and easily dirties the operator's hands. For this reason, an ink refill container capable of preventing the hands of the operator from being soiled has been considered.

An ink replenishing container is provided with an ink chamber, an ink filling passage, an air intake passage, a suction unit, and a lid member provided with a first sealing portion for sealing an ink cartridge to be refilled and a second sealing portion for sealing the air intake passage. When the ink is filled, the air of the sealed ink box can be firstly extracted to enable the ink in the ink container to flow into the air, so that negative pressure is formed in the ink container, the ink container is maintained at the negative pressure, the ink is conveyed to the ink box, and the inside of the ink box filling device is in a negative pressure state after the ink box is filled.

However, such an ink replenishing container is complicated in structure, and the two sealing portions are not simultaneously operated, and it is also necessary to maintain the ink container in a negative pressure state during the ink filling, which is very inconvenient in operation.

On the other hand, since the user often does not know the remaining amount of the ink in the ink cartridge, if the ink is replenished under the condition that the remaining amount of the ink in the ink cartridge is large, the waste of the ink is often caused, and even the overflow of the ink from the ink cartridge is caused, thereby polluting the environment; if the ink remaining amount is too small, the printed characters and patterns are unclear, and the problem of print quality is likely to occur.

Disclosure of Invention

A first object of the present invention is to provide a printhead cartridge which is simple in structure and very convenient in ink filling operation.

A second object of the present invention is to provide a method of regenerating the above-described print head cartridge.

A third object of the present invention is to provide an ink jet printer having the above printhead cartridge.

In order to achieve the first purpose of the invention, the printing head ink box provided by the invention comprises a box body, wherein the upper end of the box body is open, the lower end of the box body is provided with an ink gun, and the side wall of the box body is provided with a chip; the side wall of the filling box is provided with a movable sealing element, the sealing element is used for sealing the ink outlet, the ink outlet can be opened after the sealing element moves, and ink in the filling box flows into the box body.

By the scheme, after ink in the ink container is consumed, the ink outlet can be opened by moving the sealing element, ink in the filling box enters the ink containing cavity, and a user can quickly and conveniently supplement ink to the ink containing cavity.

Preferably, the sealing member is provided with a first sealing part and a second sealing part, the first sealing part is used for sealing the air inlet, and the second sealing part is used for sealing the ink outlet; the air inlet and the ink outlet are arranged on the same side wall of the filling box.

Therefore, when ink needs to be replenished to the ink box of the printing head, the first sealing part does not shield the air inlet, the second sealing part does not shield the ink outlet, and the ink in the filling box flows out of the ink outlet by moving the sealing element. At this time, the ink supply to the print head ink box can be realized only by facing the ink outlet to the ink accommodating cavity of the print head ink box needing ink supply. Because annotate the black in-process only need remove the sealing member, first sealing, second sealing will remove simultaneously to open air inlet, ink outlet, annotate black operation very convenient. In addition, the ink replenishing container has a very simple structure and low production cost.

And the air inlet and the ink outlet are arranged on the same side wall of the filling box, so that the air inlet and the ink outlet can be opened simultaneously by moving the sealing element, the air inlet and the ink outlet do not need to be opened respectively by two operations, and the ink injection operation is very convenient.

The ink box of the printing head further comprises a bottom plate arranged on one side of the filling box, a sealing element accommodating cavity is arranged between the bottom plate and the side wall, and the sealing element moves in the sealing element accommodating cavity.

Therefore, the sealing element accommodating cavity is arranged to limit the moving track of the sealing element, the moving operation of the sealing element is simpler, the sealing element can be moved according to a preset track, and the ink can smoothly flow out of the filling box.

The sealing element comprises a main body part, an ink channel is arranged in the main body part, a first opening and a second opening are formed in the surface of the main body part at the two ends of the ink channel respectively, and the first opening can be in butt joint with the ink outlet.

It can be seen that when the sealing member moves, the second sealing portion no longer seals the ink outlet, and ink flows into the ink channel from the ink outlet, and then flows out rapidly, and flows into the print head cartridge which needs to be replenished with ink.

Further, the bottom plate is provided with an ink supply port. Thus, the ink can flow into the ink accommodating cavity through the ink supply port on the bottom plate, and the ink is supplemented.

In a further aspect, a gas passage is disposed in the main body, a third opening and a fourth opening are formed at two ends of the gas passage on the surface of the main body, respectively, and the third opening can be in butt joint with the gas inlet.

Therefore, after the sealing element moves, the first sealing part does not seal the air inlet any more, external air can flow into the filling box through the air channel, negative pressure cannot be formed by air pressure in the filling box, and ink in the filling box can smoothly flow into the ink accommodating cavity.

Further, an ink absorbing member is arranged in the gas channel. The ink absorbing part can absorb the ink remained in the air channel, and the situation that the ink remained in the air channel flows out of the sealing part to pollute the hands of an operator is avoided.

In a further aspect, the first sealing portion protrudes from a surface of the main body portion; and/or the second sealing portion protrudes from a surface of the main body portion.

Therefore, the air inlet and the ink outlet can be effectively sealed by arranging the first sealing part and the second sealing part which are protruded out of the main body part of the sealing element, and the sealing performance is good.

In order to achieve the second objective, the invention provides a regeneration method of the print head ink box, which comprises a box body, wherein the box body is provided with a cover plate, the lower end of the box body is provided with an ink jet head, and the side wall of the box body is provided with a chip; the method comprises the following steps: removing the cover plate, and arranging a filling box at the open end of the box body to enable the box body and the filling box to enclose an ink accommodating cavity; ink is filled in the filling box, an ink outlet is arranged on the side wall of the filling box, and an air inlet is arranged on the filling box; the side wall of the filling box is provided with a movable sealing element, the sealing element is used for sealing the ink outlet, the ink outlet can be opened after the sealing element moves, and ink in the filling box flows into the ink accommodating cavity.

Further, an ink residual quantity indicator is arranged on the side wall of the box body.

To achieve the third objective, the present invention provides an ink jet printer including a housing, and the above print head cartridge is installed in the housing.

Drawings

Fig. 1 is a structural view of a conventional ink jet printer.

FIG. 2 is a block diagram of a first embodiment of the printhead cartridge of the present invention.

FIG. 3 is an exploded view of a first embodiment of the printhead cartridge of the present invention.

FIG. 4 is an exploded view of a first embodiment of an ink replenishment reservoir of an ink cartridge for a printhead according to the present invention.

FIG. 5 is an enlarged view showing the structure of a sealing member of an ink replenishment container according to a first embodiment of the ink cartridge for a printhead of the present invention.

FIG. 6 is an enlarged exploded view of the seal of the ink replenishment reservoir of the first embodiment of the ink cartridge for a printhead according to the present invention.

FIG. 7 is a cross-sectional view of a first embodiment of an ink replenishment reservoir of an ink cartridge for a printhead according to the present invention.

FIG. 8 is a cross-sectional view of the ink replenishment reservoir seal of the first embodiment of the ink cartridge for a printhead of the present invention after it has been removed.

FIG. 9 is a structural view of an ink replenishment container according to a second embodiment of the ink cartridge of the printhead of the present invention.

FIG. 10 is an exploded view of an ink replenishment reservoir according to a second embodiment of the ink cartridge of the printhead of the present invention.

The invention is further explained with reference to the drawings and the embodiments.

Detailed Description

The print head cartridge of the present invention is an ink cartridge to be mounted on an ink jet printer, and the present invention will be described in detail with reference to the embodiments.

Printhead cartridge first embodiment:

referring to fig. 2 and 3, the print head cartridge of the present embodiment has a case 20, an upper end of the case 20 is open, a lower end of the case 20 has an ink jet head, and an ink replenishment container 30 is fixed to the upper end of the case 20, that is, the ink replenishment container 30 is fixed to and seals the open end of the case 20, so that the case 20 and the ink replenishment container 30 form an ink accommodating chamber 21, and ink is accommodated in the ink accommodating chamber 21. Preferably, a sponge for absorbing ink can be arranged in the ink accommodating cavity 21, so that the ink in the ink accommodating cavity 21 is prevented from leaking to pollute surrounding products in the transportation process of the print head ink box.

In addition, a chip is provided on a side wall of the case 20, the chip records the amount of ink remaining in the head cartridge, and an ink remaining amount indicator is provided, and specifically, the ink remaining amount indicator may be an LED display screen that receives a signal output from the chip and displays information on the amount of ink remaining on the LED display screen. Alternatively, the ink remaining amount indicator is an LED lamp that emits light when the amount of ink remaining is lower than a preset value.

Referring to fig. 4, the ink replenishment container 30 is provided with a filling box 35, a cover plate 31 is provided above the filling box 35, an air hole 32 penetrating the cover plate 31 is provided in the cover plate 31, and external air can flow into the filling box 35 through the air hole 32. Preferably, the cover plate 31 is fixed to the upper end of the filling box 35 by means of glue or welding. The filling box 35 is filled with ink, and the ink is used for being supplemented into the ink accommodating cavity 21, namely after the ink in the ink accommodating cavity 21 is consumed, the ink in the filling box 35 is supplemented into the ink accommodating cavity 21, and then the ink injection of the print head ink box is realized. The filling box 35 is also provided with a sponge 33, and the sponge 33 is used for absorbing the ink in the filling box 35. Alternatively, the sponge 33 is not provided in the filling box 35, and the ink is directly filled in the filling box 35.

Referring to fig. 7, an air inlet 38 and an ink outlet 39 are provided on one side wall of the filling box 35, and in the direction of fig. 7, the air inlet 38 and the ink outlet 39 are both located on the bottom wall of the filling box 35, that is, the air inlet 38 and the ink outlet 39 are both located on the same side wall of the filling box 35. An air guide column 34 is provided in the packing box 35, an air inlet 38 is provided at a lower end of the air guide column 34 and communicates with the air guide column 34, and external air can flow into the air guide column 34 through the air inlet 38. And, the upper end of the air guide pillar 34 is close to the cover plate 31 to prevent the ink in the filling box 35 from entering the air guide pillar 34 and causing the air guide pillar 34 to be blocked.

The ink outlet 39 communicates with a cavity in the cartridge 35, and ink can flow out of the cartridge 35 through the ink outlet 39. The ink replenishing container 30 is further provided with a bottom plate 40, a sealing member accommodating chamber 41 is formed between the bottom plate 40 and the bottom wall of the cartridge 35, preferably, the sealing member accommodating chamber 41 is a cylindrical chamber, and one end of the sealing member accommodating chamber 41 is provided with a baffle 46, and the other end is open. Preferably, the bottom plate 40 is secured to the open end of the housing 20 by adhesive or welding, etc., to seal the housing 20.

The sealing member 50 is placed in the sealing member accommodating chamber 41, the sealing member 50 can be inserted into the sealing member accommodating chamber 41 from the open end of the sealing member accommodating chamber 41, and the sealing member 50 can move in the sealing member accommodating chamber 41, i.e., in the direction of the baffle 46. When the end of the seal 50 is adjacent the flap 46, the flap 46 will block the movement of the seal 50.

Referring to fig. 5 and 6, the sealing member 50 includes a cylindrical main body 51, and a first sealing portion 47 and a second sealing portion 48 are formed on a peripheral wall of the main body 51, in this embodiment, the first sealing portion 47 is an elastic body protruding on a surface of the main body 41, the first sealing portion 47 may be made of a material such as silicone, and the first sealing portion 47 extends circumferentially around the main body 51. The second sealing portion 48 is also an elastic body that protrudes on the surface of the main body portion 41, the second sealing portion 48 may be made of a material such as silicone, and the second sealing portion 48 extends circumferentially around the main body portion 51. In the axial direction of the seal 50, there is a gap between the first seal portion 47 and the second seal portion 48.

Referring to fig. 8 in combination with fig. 5 and 6, an ink channel 52 is provided in the main body 51 of the sealing member 50, the ink channel 52 is an L-shaped channel, and both ends of the ink channel 52 form a first opening 53 and a second opening 54 on the surface of the main body 51, respectively. The body 51 of the seal 50 is provided with a gas passage 56, the gas passage 56 is an L-shaped passage, and both ends of the gas passage 56 are formed with a third opening 57 and a fourth opening 58 on the surface of the body 51, respectively. An ink absorbing member 59 is provided in the gas passage 56, and preferably, the ink absorbing member 59 is a cylindrical sponge, and air can pass through the ink absorbing member 59 but ink will be absorbed by the ink absorbing member 59. As can be seen from fig. 5, the first opening 53 is located at the gap between the first seal portion 47 and the second seal portion 48.

Referring to fig. 7, when the ink in the cartridge body 20 is not consumed, and one end of the sealing member 50 is close to the open end of the sealing member accommodating chamber 41, the first sealing portion 47 of the sealing member 50 will seal the air inlet 38, and the second sealing portion 48 will seal the ink outlet 39, so that external air cannot enter the filling cartridge 35 through the air inlet 38, and the ink in the filling cartridge 35 cannot flow out through the ink outlet 39.

When the ink in the cartridge 20 is consumed, the remaining ink amount indicator disposed on the sidewall of the cartridge 20 sends out an indication message, for example, the LED display screen displays that the remaining amount of ink is low, or the LED lamp emits light, at this time, the user can know that the amount of ink remaining in the ink containing chamber 21 is insufficient, the user pushes the sealing member 50 toward the direction close to the baffle 46, for example, the sealing member 50 is pushed by a finger or a pen tip, and after the sealing member 50 moves a certain distance, as shown in fig. 8, the first sealing portion 47 no longer blocks the air inlet 38, the second sealing portion 48 no longer blocks the ink outlet 39, and the third opening 57 is in contact with the air inlet 38, and the first opening 53 is in contact with the ink outlet 39.

At this time, external air may flow into the air inlet 38 through the fourth opening 58, the air passage 56, and the third opening 57, and the air may enter the packing box 35 along the air guide pillar 34. Also, the ink in the cartridge 35 will flow into the ink passage 52 through the ink outlet 39, the first opening 53, and flow out through the second opening 54. Thus, ink will flow into the seal container 41. In the present embodiment, the ink supply port 45 is provided on the bottom plate 40, the ink supply port 45 penetrates the bottom plate 40, and an upper end 44 of the ink supply port 45 communicates with the seal accommodating chamber 41, for example, the upper end 44 of the ink supply port 45 is provided on a side close to the shutter 46. And, the lower end of the ink supply port 45 communicates with the ink accommodating chamber 21. Thus, the ink flowing out of the cartridge 35 flows into the ink accommodating chamber 21 through the ink outlet 39, the ink passage 52, the seal accommodating chamber 41, and the ink supply port 45, and the ink accommodating chamber 21 is replenished with ink.

In the process of flowing the ink in the filling box 35 to the ink containing chamber 21, air continuously enters the filling box 35 through the air channel 56 and the air guide pillar 34, but a small amount of ink may enter the air channel 56 from the air guide pillar 34, so that in order to prevent the ink from flowing out of the air channel 56 to contaminate peripheral products or to contaminate the hands of an operator, the ink absorbing member 59 provided in the air channel 56 absorbs the ink entering the air channel 56.

Like this, under the sufficient condition of ink surplus in ink holding cavity 21, the user need not promote sealing member 50, avoids opening under the sufficient condition of ink holding cavity 21 surplus and filling the box 35 and lead to filling the ink in the box 35 and get into the ink and hold the chamber 21 after, leads to the ink to hold the chamber 21 from the ink and spills over, can effectively avoid the waste of ink, can also avoid environmental pollution. When the amount of ink remaining in the ink containing chamber 21 is insufficient, the ink can be quickly supplied to the ink containing chamber 21 by opening the seal 50.

In the above embodiment, the air inlet and the ink outlet are disposed on the same side wall, and the sealing member can simultaneously seal the air inlet and the ink outlet.

Method embodiment of regeneration of print head cartridge:

when regenerating the printer head ink box, at first retrieve old and useless printer head ink box, old and useless printer head ink box includes a box body, and the box body is the open structure in upper end, is provided with the apron on this box body, and the apron is lamellar apron, and the apron lid is on the box body to enclose into an ink and hold the chamber. And the lower end of the box body is provided with an ink jet head, and the side wall of the box body is provided with a chip.

When regenerating a used print head cartridge, the cover plate is removed, for example by milling using a milling machine, and then a filling box is provided at the open end of the cartridge body, the structure of the filling box being as described in the first embodiment of the print head cartridge, such that the cartridge body and the filling box enclose an ink accommodating chamber. Preferably, the filling box is fixed at the upper end of the box body by using glue bonding or welding and other processes. Finally, the cartridge is filled with ink. If the side wall of the waste printing head ink box is not provided with the ink allowance indicator, the side wall of the box body is also required to be provided with the ink allowance indicator, and the ink allowance indicator is required to be electrically connected with the chip.

Printhead cartridge second embodiment:

the print head ink box of the embodiment comprises a box body and an ink replenishing container, wherein the box body is provided with an opening at the upper end, and the ink replenishing container can be covered above the box body. Referring to fig. 9 and 10, the ink replenishment container 60 of the present embodiment includes a filling box 66, and a partition plate 65 is provided in the filling box 66 so as to divide the filling box 66 into three ink chambers 64, each ink chamber 64 being for containing ink of one color. Therefore, the ink replenishment container of the present embodiment can accommodate three different colors of ink.

The upper end of the filling box 66 is provided with a cover plate 61, preferably, the cover plate 61 is fixed on the upper end of the filling box 66 by welding or the like, and a plurality of sponges 63 can be placed in the filling box 66, preferably, each sponge 63 is placed in one ink chamber 64 for adsorbing ink in the ink chamber 64. The cover plate 61 is provided with three air holes 62, and each air hole 62 is positioned above one ink chamber 64.

One side wall of the filling box 66 is provided with an air inlet and an ink outlet, for example, three air inlets and three ink outlets are provided on the bottom wall of the filling box 66, one air inlet and one ink outlet are provided at the bottom of each ink chamber 64, and the air inlet and the ink outlet corresponding to the same ink chamber 64 are arranged adjacent to each other.

A bottom plate 70 is disposed at the bottom of the filling box 66, three sealing member accommodating cavities 67 are formed between the bottom plate 70 and the filling box 66, each sealing member accommodating cavity 67 is used for accommodating one sealing member 68, and the structure of the sealing member 68 of the present embodiment is the same as that of the sealing member of the first embodiment, and is not described again. Also, the bottom plate 70 is divided into three areas 71, each area corresponding to one ink chamber 64, and each area 71 is provided with an ink supply port 72.

When the ink is not required to be filled into the cartridge body, the sealing member 68 seals the air inlet and the ink outlet corresponding to each ink chamber 64, and when the ink is required to be replenished, the sealing member 68 is moved to open the air inlet and the ink outlet corresponding to the ink chamber 64, and the ink in the filling cartridge 66 flows into the cartridge body, so that the ink replenishment to the cartridge body is realized.

Therefore, the ink supplementing container is used for supplementing ink to the ink accommodating cavity of the printing head ink box, the operation is very simple, only the sealing piece needs to be pushed, the air inlet and the ink outlet can be opened simultaneously, negative pressure pumping and other operations are not needed, and the hands of operators are not polluted. In addition, the ink replenishing container has a very simple structure and low production cost.

Inkjet printer example:

the ink jet printer of this embodiment is provided with a body in which a housing chamber for housing the above-described print head cartridge is formed.

Finally, it should be emphasized that the present invention is not limited to the above-described embodiments, for example, the first sealing portion and the second sealing portion are not necessarily annular, but are only silicone rubber protruding on the surface of the main body portion of the sealing member, or the first sealing portion and the second sealing portion are not protruding from the main body portion of the sealing member, but are flush with the surface of the main body portion, and such changes should be included in the protection scope of the claims of the present invention.

Claims

1. A printhead cartridge, comprising:

the upper end of the box body is open, the lower end of the box body is provided with an ink jet head, and the side wall of the box body is provided with a chip;

the method is characterized in that:

a filling box is fixed on the open end of the box body, and the box body and the filling box enclose an ink accommodating cavity;

the filling box is filled with ink, an ink outlet is formed in the side wall of the filling box, and an air inlet is formed in the filling box;

the side wall of the filling box is provided with a movable sealing element, the sealing element is used for sealing the ink outlet, the ink outlet can be opened after the sealing element moves, and ink in the filling box flows into the ink accommodating cavity.

2. The printhead cartridge of claim 1 wherein:

the sealing element is provided with a first sealing part and a second sealing part, the first sealing part is used for sealing the air inlet, and the second sealing part is used for sealing the ink outlet;

the air inlet and the ink outlet are arranged on the same side wall of the filling box.

3. The printhead cartridge of claim 2 wherein:

the printing head ink box also comprises a bottom plate arranged on one side of the filling box, a sealing element accommodating cavity is arranged between the bottom plate and the side wall, and the sealing element moves in the sealing element accommodating cavity.

4. The printhead cartridge of claim 3 wherein:

the sealing element comprises a main body part, wherein an ink channel is arranged in the main body part, a first opening and a second opening are formed in the two ends of the ink channel on the surface of the main body part respectively, and the first opening can be in butt joint with the ink outlet.

5. The printhead cartridge of claim 4 wherein:

the bottom plate is provided with an ink supply port.

6. A printhead cartridge according to claim 4 or 5 wherein:

the air inlet is arranged on the main body part, the air channel is arranged in the main body part, a third opening and a fourth opening are formed in the two ends of the air channel respectively on the surface of the main body part, and the third opening can be in butt joint with the air inlet.

7. The printhead cartridge of claim 6, wherein:

an ink absorption part is arranged in the gas channel.

8. The regeneration method of the printing head ink box comprises a box body, wherein a cover plate is arranged on the box body, an ink gun is arranged at the lower end of the box body, and a chip is arranged on the side wall of the box body;

the method is characterized by comprising the following steps:

removing the cover plate, and arranging a filling box at the open end of the box body to enable the box body and the filling box to enclose an ink accommodating cavity;

ink is filled in the filling box, an ink outlet is formed in the side wall of the filling box, and an air inlet is formed in the filling box;

9. The method of regenerating a printhead cartridge of claim 8, further comprising:

and an ink allowance indicator is arranged on the side wall of the box body.

10. An inkjet printer comprising a body in which is mounted a printhead cartridge according to any one of claims 1 to 7.