CN217476888U - Ink box - Google Patents

Abstract

The utility model provides an ink box, including the box body that can hold the ink, be located the preceding lateral wall and the sub-preceding lateral wall of box body the place ahead, be located the chip component on the box body and the play black portion that projects forward from the sub-preceding lateral wall, in the upper and lower direction, the preceding lateral wall is located sub-preceding lateral wall top, it has the play black terminal surface that is located its front end to go out black portion, the chip component includes the chip frame and installs the chip at the chip frame, the chip has the chip contact, in the upper and lower direction, the chip contact is located the box body top, in the front and back direction, the chip contact is located the box body front end, the chip contact is parallel and level with the play black terminal surface or than the play black terminal surface forward projection distance (h); through setting up out black portion to be more than preceding lateral wall protrusion, set up the chip simultaneously to be more than black portion protrusion or parallel and level, when the ink horn installation, go out black portion and the play black needle in the equipment no longer by preceding lateral wall restriction to electric contact needle and chip contact also no longer by the cooperation influence of black portion and play black needle, thereby reduce the assembly precision, convenient operation improves user experience and feels.

Description

Ink box

Technical Field

The utility model relates to an inkjet formation of image field especially relates to an ink horn that detachably installed in inkjet imaging device.

Background

An ink cartridge for supplying ink to an inkjet image forming apparatus (hereinafter referred to as "apparatus"), the ink cartridge being detachably mountable to the apparatus, the ink cartridge comprising a housing capable of containing the ink and an ink outlet portion combined with the housing, the ink outlet portion being located at a front wall of the ink cartridge, the ink outlet portion being adapted to be connected to an ink outlet pin in the apparatus for supplying the ink to the apparatus, the ink cartridge further comprising a chip located at a top wall of the ink cartridge, the chip being adapted to be in contact with an electrical contact pin in the apparatus for establishing a communication connection with the apparatus.

In the prior art, because go out black portion and be located in the front and back direction the rear end of ink horn antetheca makes go out black portion with the cooperation of going out the ink needle receives the restriction of antetheca for need accurate alignment just can install in place in the installation, otherwise receive the hindrance easily, increased the degree of difficulty coefficient of user in the installation, the operation is inconvenient, reduces user experience and feels.

And the chip is positioned behind the ink outlet part in the front-back direction, so when the chip is installed, the contact between the chip and the electric contact pin is influenced by the matching precision of the ink outlet part and the ink outlet pin, and when the ink outlet part and the ink outlet pin are not accurately matched, the matching between the chip and the electric contact pin is influenced, and the accuracy of the chip identified by equipment is further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides an ink box to solve the technical problem that assembly precision is high, the operation is inconvenient. The specific scheme is as follows:

ink horn, detachably installs to inkjet imaging device, including can hold the box body of ink, be located the preceding lateral wall in box body the place ahead and sub preceding lateral wall, be located the chip component on the box body and follow the sub preceding lateral wall convex play black portion forward, in the upper and lower direction, preceding lateral wall is located the top of sub preceding lateral wall, it has the play black terminal surface that is located its front end to go out black portion, the chip component includes the chip frame and installs the chip at the chip frame, the chip has the chip contact, in the upper and lower direction, the chip contact is located the box body top, in the front rear direction, the chip contact is located the box body front end, the chip contact with go out black terminal surface parallel and level or compare go out black terminal surface convex distance (h) forward.

The ink outlet end surface protrudes forward than a front side wall of the cartridge body by a distance (g) in a front-rear direction.

The chip is provided with through hole portion and fool-proof portion, the through hole portion with fool-proof portion with the chip frame is connected.

The chip frame is integrally formed with the box body, the chip frame comprises a first limiting column and a fool-proof column, the first limiting column extends upwards from the box body, the first limiting column is matched with the through hole portion, and the fool-proof column is matched with the fool-proof portion.

The number of the through hole parts and the number of the chips are respectively one or more.

In the up-down direction, the front side wall is located below the chip and above the ink discharge portion.

Go out black portion still including the ink outlet that is located the front end, the ink horn still is provided with the air guide hole, the air guide hole with go out the adjacent setting of ink outlet, the ink horn still includes the seal membrane, the seal membrane sets up go out the black terminal surface, can be used to seal simultaneously go out the black mouth with the air guide hole.

As described above, the utility model discloses a set up to the portion of appearing the china ink and set up to than preceding lateral wall protrusion, set up to the chip than the portion of appearing the china ink protrusion or parallel and level simultaneously for when the ink horn installation, the play china ink needle in the portion of appearing the china ink and the equipment is no longer restricted by preceding lateral wall, and the electric contact pilotage in the equipment is also no longer influenced by the cooperation of the portion of appearing the china ink and the play china ink needle with the chip contact, thereby reduces the assembly precision, convenient operation improves user's experience and feels.

Drawings

Fig. 1 is a perspective view of an ink cartridge according to the present invention.

Fig. 2 is a partially exploded view of the ink cartridge according to the present invention.

Fig. 3 is a schematic view of the ink cartridge according to the present invention, as viewed from the front to the rear in the front-rear direction.

Fig. 4 is a schematic view of an air guide path of the ink cartridge according to the present invention, the air guide path being cut along a plane perpendicular to the left-right direction.

Fig. 5 is a schematic view of an ink path of the ink cartridge according to the present invention.

Fig. 6 is a schematic view of a chip component of the ink cartridge according to the present invention.

Fig. 7 is a schematic view of the positions of the chip and the ink outlet when viewed from left to right after the cover member is hidden in the ink cartridge of the present invention.

Fig. 8 is a perspective view of a light detection unit of the ink cartridge according to the present invention.

Fig. 9 is a partially exploded view of a light detection unit of the ink cartridge according to the present invention.

Fig. 10 is a schematic view of the structure of the light detection unit of the ink cartridge according to the present invention on the cartridge body.

Fig. 11 is a schematic view of the structure of the light detecting section of the ink cartridge according to the present invention on the cover member.

Fig. 12A and 12B are perspective views of the light shielding member of the ink cartridge according to the present invention.

Fig. 13A and 13B are perspective views of a floating member of the ink cartridge according to the present invention.

Fig. 14A is a schematic view of the light shielding member in a first position when viewed from left to right with the cover member hidden in the ink cartridge according to the present invention.

Fig. 14B is a schematic view of the light shielding member in a second position when viewed from left to right after the cover member is hidden in the ink cartridge according to the present invention.

Detailed Description

Fig. 1 is a perspective view of an ink cartridge according to the present invention, fig. 2 is a partially exploded view of the ink cartridge according to the present invention, and fig. 3 is a schematic view of the ink cartridge according to the present invention as viewed from the front to the rear in the front-rear direction.

For convenience of description, the longitudinal direction/axial direction of the ink cartridge 100 is defined as the front-rear direction, the width direction of the ink cartridge 100 is defined as the left-right direction, the height direction of the ink cartridge 100 is defined as the up-down direction, the front of the ink cartridge 100 is the mounting direction, and the rear of the ink cartridge 100 is the dismounting direction, with respect to the state of the ink cartridge 100 when mounted. The ink cartridge 100 has an upper side wall 101 and a lower side wall 102 which are opposed to each other in the vertical direction, a front side wall 103/sub front side wall 103 'and a rear side wall 104 which are opposed to each other in the front-rear direction, a left side wall 105 and a right side wall 106 which are opposed to each other in the left-right direction, and the front side wall 103 is located above the sub front side wall 103' in the vertical direction.

As shown in fig. 1 to 3, the ink cartridge 100 includes a cover member 1 and a cartridge body 2 coupled to each other, and an ink outlet portion 4 integrally formed with the cartridge body 2, the cartridge body 2 being provided therein with an ink chamber 21, the ink chamber 21 being adapted to store ink, the ink outlet portion 4 projecting forward from a sub-front side wall 103' of the ink cartridge 100, and at a lower end of the ink cartridge 100, the ink outlet portion 4 including an ink outlet 41 at a front end, the ink outlet 41 being adapted to abut against a suction needle in the apparatus to supply ink to the apparatus, the ink outlet portion 4 having an ink outlet end surface 43 at a front end thereof, the outer circumferential surface of the ink outlet portion 4 being further provided with guide ribs 42, the guide ribs 42 being projections extending outward from the outer circumferential surface of the ink outlet portion 4, the number of which may be one or two or more spaced apart, being adapted to enhance the structural strength of the ink outlet portion 4, and to guide the ink cartridge 100 to be accurately fitted to the apparatus during installation, the guide ribs 42 extend in the longitudinal direction/front-rear direction, parallel to the longitudinal direction/front-rear direction, so that the ink cartridge 100 can be stably guided when mounted. The ink cartridge 100 further includes a sealing film 5, the sealing film 5 being disposed on the ink outlet end surface 43, the sealing film 5 sealing the ink outlet 41 to prevent ink leakage when the ink cartridge 100 is not in use.

The sub front side wall 103' of the ink cartridge 100 is further provided with a first avoiding portion 107, at least one of the left side, the right side and the bottom side of the first avoiding portion 107 is open to the outside, in the height direction/up-down direction, the first avoiding portion 107 is located below the ink outlet portion 4, in the width direction/left-right direction, the first avoiding portion 107 penetrates through the ink cartridge 100, the first avoiding portion 107 can accommodate a guided portion in the device in the installation process, abrasion and damage between parts are prevented, the guided portion can also support the ink outlet portion 4, the ink cartridge 100 can be installed more stably, the first avoiding portion 107 can also enable the ink cartridge 100 to be simple in structure and convenient to install.

The ink cartridge 100 further comprises a chip component 3, the chip component 3 comprises a chip 31 and a chip frame 32, the chip 31 is used for transmitting information to the equipment so that the ink cartridge 100 can be identified, the chip frame 32 can be used for installing the chip 31, the chip component 3/the chip 31 is positioned at the front end of the ink cartridge 100/the cartridge body 2 in the length direction/the front-back direction, and the chip component 3/the chip 31 is positioned on the upper side wall 101 of the ink cartridge 100 in the height direction/the up-down direction, namely positioned above the ink outlet part 4, so that the ink pollution caused by the residual ink in the ink outlet part 4 can be prevented, and the chip 31 can be stably identified so as to establish communication connection with the equipment.

The ink cartridge 100 is further provided with a second avoiding portion 108, the second avoiding portion 108 is located at the upper end of the ink cartridge 100 in the height direction/up-down direction, the second avoiding portion 108 is located at the rear end of the ink cartridge 100 in the length direction/front-rear direction, and the second avoiding portion 108 can avoid interference between the ink cartridge 100 and components arranged above the apparatus during installation of the ink cartridge 100, for example, a lever of a locking device arranged in the apparatus, which can reduce damage to the apparatus components.

Fig. 4 is a schematic view of an air guide path of the ink cartridge according to the present invention, which is cut along a plane perpendicular to the left-right direction, and fig. 5 is a schematic view of an ink path of the ink cartridge according to the present invention.

As shown in fig. 4 and 5, the ink cartridge 100 is further provided with an air vent 22, in this embodiment, the air vent 22 is disposed adjacent to the ink outlet 4/41, so that the air vent 22 and the ink outlet 41 can be sealed by the sealing film 5 at the same time, and when the ink cartridge 100 is installed, the sealing film 5 is pierced by an ink suction needle in the apparatus, so that the ink cartridge can be used, and the situation that the ink chamber 21 cannot communicate with the atmosphere due to the fact that a user forgets to tear off the air vent sealing the air vent 22 can be avoided, and the operation is simple. Specifically, the box body 2 is provided with an air guide path S1, the inlet of the air guide path S1 is an air guide hole 22, the air guide hole 22 is communicated with the atmosphere, the outlet 23 of the air guide path S1 is communicated with the ink chamber 21, and after the ink box 100 is mounted in the device, when the ink suction needle sucks ink, the air guide hole 22 can be communicated with the atmosphere and the inside of the ink box 100, so that the pressure in the ink box 100 is kept balanced; the cartridge body 2 also has a first ink path S2 and a second ink path S3, the inlet 24 of the first ink path S2 communicates with the ink chamber 21, the through-hole 25 penetrates in the width direction/left-right direction of the cartridge body 2, so that the through-hole 25 is both the outlet of the first ink path S2 and the inlet of the second ink path S3, and the outlet 26 of the second ink path S3 communicates with the ink outlet 41 to supply ink to the apparatus.

Fig. 6 is a schematic view of a chip component of the ink cartridge according to the present invention, and fig. 7 is a schematic view of positions of a chip and an ink outlet when viewed from left to right after the cover member is hidden in the ink cartridge according to the present invention.

As shown in fig. 6, the chip 31 has a chip substrate 311 and chip contacts 312 on the chip substrate 311, the chip contacts 312 are located at the front end of the cartridge body 2 in the length direction/front-back direction, the chip contacts 312 are located above the cartridge body 2 in the height direction/up-down direction, the chip contacts 312 are used for contacting with electrical contact pins in the apparatus to establish communication connection, the chip substrate 311 is provided with a storage part (not shown) for connecting with the chip contacts to store the relevant information of the ink cartridge 100; the chip 31 is further provided with a through hole part 313 and a fool-proof part 314, the through hole part 313 and the fool-proof part 314 are used for being connected with the chip frame 32, the through hole part 313 can be used for limiting the movement of the chip 31 in the length direction/the front-back direction and the width direction/the left-right direction, one side of the fool-proof part 314 is arc-shaped, the other side of the fool-proof part 314 is linear, the chip 31 can be prevented from being installed reversely and wrongly installed, and the chip 31 can be limited to rotate around an axis vertical to the height direction/the up-down direction on the basis of the through hole part 313, so that the chip 31 can be fixed; the chip 31 is further provided with a stopper 315 for further restricting the movement of the chip 31 in the width direction/left-right direction, so that the chip 31 can be mounted more stably. Alternatively, the number of the through hole portions 313 and the number of the chips 31 are one or more, and may be set according to specific requirements.

The chip frame 32 is preferably integrally formed with the case body 2, the chip frame 32 includes a first limiting post 321, a fool-proof post 322 and a second limiting post 323 extending upward from the case body 2, the first limiting post 321 is used for the through hole portion 313 to cooperate, the fool-proof post 321 is used for the fool-proof portion 314 to cooperate, and the second limiting post 323 is used for the limiting portion 315 to cooperate.

As shown in fig. 7, when viewed from left to right, the ink outlet end surface 43 is in front of the front side wall 103 in the longitudinal direction/front-back direction by a forward protruding distance g, the chip 31 is mounted on the chip holder 32, the chip contact 312 is in front of the ink outlet end surface 43 in the longitudinal direction/front-back direction, the chip contact 312 protrudes forward from the ink outlet end surface 43 by a distance h, and in other embodiments, the chip contact 312 may be flush with the ink outlet end surface 43; make when ink horn 100 is installed, chip 31 can be in advance or simultaneously with ink outlet 41 butt equipment, can not receive ink outlet 41 and the influence of the accurate complex of the blotting needle in the equipment, flexibility and accuracy when improving the assembly of chip 31, it is protruding than preceding lateral wall 103 to go out black terminal surface 43 simultaneously, consequently preceding lateral wall 103 can not block ink outlet 41 and blotting needle butt, can reduce the assembly degree of difficulty of ink outlet portion 4, make the simple structure of ink horn 100, high durability and convenient installation, user's experience is felt. Further, in the height direction/up-down direction, the front sidewall 103 is located below the chip 31 and above the ink outlet 4, which is more beneficial to prevent the chip 31 from being contaminated by the ink remaining in the ink outlet 4, so that the chip 31 can be stably identified.

Fig. 8 is a perspective view of a light detecting portion of an ink cartridge according to the present invention, fig. 9 is an exploded view of a part of the light detecting portion of the ink cartridge according to the present invention, fig. 10 is a schematic view of the structure of the light detecting portion of the ink cartridge according to the present invention on a cartridge body, and fig. 11 is a schematic view of the structure of the light detecting portion of the ink cartridge according to the present invention on a cover member.

As shown in fig. 8 and 9, the ink cartridge 100 further includes a light detecting portion 6, the light detecting portion 6 is disposed at an upper end of the ink cartridge 100/the cartridge body 2 and is configured to detect a remaining amount of ink in the ink cartridge 100, and the light detecting portion 6 includes an isolation chamber 61, a guide member 62, a protection member 63, a light shielding member 64, and a floating member 65. The guiding element 62 may be a cavity structure, and may also be a guiding column or a guiding rib, which will be described in detail by taking the cavity structure as an example.

Specifically, as shown in fig. 10 and 11, the isolation chamber 61 is used for mounting the light shielding member 64, the isolation chamber 61 is separated from the ink chamber 21, the isolation chamber 61 has an opening portion 611 facing upward, and the light shielding member 64 can extend to the outside through the opening portion 611; the separating chamber 61 is further provided with a mounting portion 612, in this embodiment, the mounting portion 612 is a cylinder structure, and the mounting portion 612 extends inwards from the side of the right sidewall 100 facing the inside of the box body 2 for connecting with the light shielding member 64, so that the light shielding member 64 is mounted; the isolation chamber 61 further includes a first blocking portion 613 and a second blocking portion 614 disposed on the upper sidewall 101, and the first blocking portion 613 and the second blocking portion 614 are respectively located at two ends of the opening portion 611 in the length direction/front-rear direction, so as to prevent the light shielding member 64 from being too large in swing amplitude or movement amplitude; the isolation chamber 61 further includes a first inclined surface 615 and a second inclined surface 616 disposed inside thereof, the first inclined surface 615 and the second inclined surface 616 are disposed opposite to each other in the longitudinal direction/front-rear direction, the inclination angle of the first inclined surface 615 and the second inclined surface 616 is 30 ° to 60 °, and an excessive swing amplitude or movement amplitude of the light shielding member 64 can be avoided.

The guide member 62 is for engaging with the floating member 65, the guide member 62 communicates with the ink chamber 21, and the guide member 62 includes a first shutter 621 and a second shutter 622 that are disposed opposite to each other in the longitudinal direction/front-rear direction, and the first shutter 621 and the second shutter 622 may restrict the floating member 65 from moving in the height direction/up-down direction along the guide member 62.

The protection member 63 is disposed above the isolation cavity 61, so as to prevent the light shielding member 64 from being compressed by the packaging bag and deformed, the protection member 63 has a light transmission portion 631, and the light transmission portion 631 is hollowed out, so that the detection light in the device can pass through. In the present embodiment, the protector 63 is provided at the upper end of the cover 1, and in other embodiments, the protector 63 may be provided at the upper end of the case 2, integrally formed with the case 2, or separately formed.

Fig. 12A and 12B are perspective views of a light shielding member of an ink cartridge according to the present invention, and fig. 13A and 13B are perspective views of a floating member of the ink cartridge according to the present invention.

As shown in fig. 12A and 12B, the light shielding member 64 includes a main body portion 641, and a light shielding portion 642 and a first connecting portion 643 connected to the main body portion 641, the main body portion 641 includes a first main body portion 6411 and a second main body portion 6412 connected to each other, the light shielding portion 642 is located at an end portion of the first main body portion 6411, the first connecting portion 643 is located at an end portion of the second main body portion 6412, and the first main body portion 6411 and the second main body portion 6412 are angled, which can make the structure compact and reduce the occupied space; when the ink remaining amount of the ink cartridge 100 is sufficient, the light shielding portion 642 is used for shielding the detection light and preventing the detection light from passing, and when the ink remaining amount is insufficient, the light shielding portion 642 does not shield the detection light and the detection light can pass; the first connection portion 643 has a slot portion 6431, and the light shielding member 64 further includes a first magnetic element 645 mounted in the slot portion 6431, the first magnetic element 645 being for interacting with the floating member 65. The light shielding member 64 further includes a mounted portion 644 disposed on the main body 641, a mounting hole 6441 is disposed at the center of the mounted portion 644, the mounting hole 6441 is used for matching with the mounting portion 612 in the isolation cavity 61, in other embodiments, the positions of the mounted portion 644 and the mounting portion 612 may be interchanged, that is, the mounted portion 644 is a column structure, and the mounting portion 612 is a hole structure. In the present embodiment, the light shielding member 64 is a swinging member that swings in the length direction/front-rear direction along the mounting portion 612; in other embodiments, light shield 64 is a slidable slide.

As shown in fig. 13A and 13B, in the present embodiment, the float member 65 includes a second connecting portion 651 and a guide portion 652 connected to each other, the second connecting portion 651 for interacting with the first connecting portion 643/the first magnetic member 645, the guide portion 652 for moving in the height direction/up-down direction along the guide 62, the guide portion 652 moving upward along the guide 62 by the buoyancy when the amount of ink remaining in the ink cartridge 100 is sufficient, and the guide portion 652 moving downward along the guide 62 when the amount of ink remaining is insufficient; the floating member 65 further includes a second magnetic member 653 mounted to the second connecting portion 651, the second connecting portion 651 has a mounting groove 6511, and the second magnetic member 653 is mounted to the mounting groove 6511. The second magnetic member 653 has the same magnetic pole as the opposite side of the first magnetic member 645, so that when the guide 652 moves upward due to the sufficient amount of ink remaining, the first magnetic member 645 is subjected to the repulsive force of the second magnetic member 653 to swing the light shutter 64 about the mounting portion 612, thereby moving the light shutter 642 to a position where it can block the detection light.

Fig. 14A is a schematic view of the light shielding member in the first position when viewed from the left to the right after the cover member is hidden in the ink cartridge, and fig. 14B is a schematic view of the light shielding member in the second position when viewed from the left to the right after the cover member is hidden in the ink cartridge.

As shown in fig. 14A and 14B, the light shielding portion 642 is movable between a first position blocking the detection light and a second position not blocking the detection light, both the first position and the second position are higher than the upper sidewall 101 of the cartridge body 2 in the height direction/up-down direction, and even if the ink cartridge 100 is transported, the light shielding portion 642 is still above the upper sidewall 101 even under the inertia effect, so that the detection effect of the light shielding portion 642 is ensured not to fail; the first position and the second position are also higher than the chip substrate 311 in the height direction/up-down direction, so that the structure in the apparatus has enough space without interference.

After the ink cartridge 100 is mounted to the apparatus, when the remaining amount of ink in the ink cartridge 100 is sufficient, the floating member 65 moves upward along the guide member 62 under the action of buoyancy, the second magnetic element 653 in the second connecting portion 651 generates repulsive force with the first magnetic element 645 in the first connecting portion 643, so that the first connecting portion 643 drives the light shielding member 64 to swing around the mounting portion 612 in the counterclockwise direction, so that the light shielding portion 642 moves to the first position where the light shielding portion 643 shields the detection light, the light shielding portion 642 is close to the first blocking portion 643, and the first connecting portion is close to the second inclined surface 616, at this time, the detection light in the apparatus is shielded from passing through the ink cartridge 100, and the apparatus cannot receive the detection light, so that the apparatus can detect that the remaining amount of ink in the mounted ink cartridge 100 is sufficient, and can perform a printing operation.

When the ink in the ink cartridge 100 is consumed and the remaining amount is insufficient, the floating member 65 gradually descends along the guiding member 62 along with the consumption of the ink, and the second connecting portion 651 simultaneously moves away from the first connecting portion 643 to gradually reduce the repulsive force therebetween, so that the first connecting portion 643 drives the light shielding member 64 to swing clockwise around the mounting portion 612 under the action of gravity, so that the light shielding portion 642 moves to the second position where the light shielding portion 643 does not shield the detection light, the light shielding portion 642 approaches the second blocking portion 614, and the first connecting portion 643 moves away from the second inclined surface 616, at this time, the detection light in the apparatus smoothly passes through the ink cartridge 100, and the apparatus receives the detection light, so that the apparatus detects that the remaining amount of the ink in the ink cartridge 100 is insufficient, and prompts a user to replenish the ink.

The utility model adopts the above technical scheme, through setting up out black portion to than preceding lateral wall protrusion, set up the chip to than black portion protrusion or parallel and level simultaneously for when the ink horn installation, go out black needle in black portion and the equipment no longer by preceding lateral wall restriction, and the electric contact pilotage in the equipment also no longer influenced by the cooperation of going out black portion and play black needle with the chip contact, thereby reduce the assembly precision, convenient operation improves user's experience and feels.

Claims (7)

1. An ink cartridge detachably mountable to an inkjet image forming apparatus, including a cartridge body capable of containing ink, a front side wall and a sub front side wall located in front of the cartridge body, a chip member located on the cartridge body, and an ink discharge portion projecting forward from the sub front side wall, the front side wall being located above the sub front side wall in an up-down direction, the ink discharge portion having an ink discharge end face located at a front end thereof, characterized in that,

the chip component includes the chip frame and installs the chip at the chip frame, the chip has the chip contact, on the up-down direction, the chip contact is located the box body top, in the front rear direction, the chip contact is located the box body front end, the chip contact with go out black terminal surface parallel and level or compare go out black terminal surface protrusion distance (h) forward.

2. The ink cartridge as claimed in claim 1, wherein the ink outlet end surface projects forward by a distance (g) in a front-rear direction than a front side wall of the cartridge body.

3. The ink cartridge as claimed in claim 1, wherein the chip is provided with a through hole portion and a fool-proof portion, the through hole portion and the fool-proof portion being connected to the chip holder.

4. The ink cartridge as claimed in claim 3, wherein the chip holder is integrally formed with the cartridge body, the chip holder including a first stopper post and a fool-proof post extending upward from the cartridge body, the first stopper post engaging with the through hole portion, the fool-proof post engaging with the fool-proof portion.

5. The ink cartridge as claimed in claim 4, wherein the number of the through hole portions and the number of the chips are one or more.

6. The ink cartridge as claimed in claim 1, wherein the front wall is located below the chip and above the ink discharging portion in a vertical direction.

7. The ink cartridge as claimed in any one of claims 1 to 6, wherein said ink outlet portion further includes an ink outlet port at a front end, said ink cartridge further being provided with an air vent disposed adjacent to said ink outlet port, said ink cartridge further comprising a sealing film disposed on said ink outlet end surface for sealing said ink outlet port and said air vent simultaneously.

Images