CN1188285C

CN1188285C - Ink-jet printer cartridge

Info

Publication number: CN1188285C
Application number: CNB021519242A
Authority: CN
Inventors: 田永中
Original assignee: Print Rite Unicorn Image Products Co Ltd
Current assignee: Print Rite Unicorn Image Products Co Ltd
Priority date: 2002-11-12
Filing date: 2002-11-12
Publication date: 2005-02-09
Anticipated expiration: 2022-11-12
Also published as: CN1500641A; WO2004043699A1; AU2003277476A1

Abstract

The present invention relates to a detachable type ink cartridge for a line ink jet printer which comprises an enclosed casing in which ink liquid is contained, wherein one surface of the casing is provided with a gas pipe, a positioning plate and an ink outlet which can be butted with a printer, and the ink outlet is an end opening of a self-closing valve outside an ink cavity; an end opening of the self-closing valve, which is inside the ink cavity, is positioned in the low position in the ink cavity. One end of the gas pipe, which is outside the casing, is an inlet of a one-way valve, and one end inside the casing is an outlet of the one-way valve; the outlet of the one-way valve is positioned in the high position in the ink cavity. The structure of the ink cartridge is relatively simplified, so the filling technology in the production process and the cleaning technology and filling technology in the renewing process can be simplified. An ink bag which is easy to break at the time of renewing is omitted. Accordingly, the cost is reduced, and the environmental pollution is decreased.

Description

Ink-jet printer cartridge

Technical field

The present invention relates to cartridge of ink-jet printer, the dismountable print cartridge that particularly large-scale line-at-a-time printer is used.

Background technology

Wide capable ink-jet printer frame one side is provided with the box storehouse, printhead is connected with the box storehouse by pipeline, print cartridge of all kinds is placed in the box storehouse removably, be accompanied by the expansion day by day of line-at-a-time printer range of application, the capable width of cloth of line-at-a-time printer is also more and more wideer, because printhead is that back and forth movement carries out work on the vertical direction of the relative print media direction of motion, this makes the box storehouse also more and more longer to the pipeline of printhead, for solving black liquid causes the ink supply deficiency in the ducted pressure loss problem, employing adds air pressure in print cartridge, make black liquid in print cartridge, flow to printhead by air pressure, thereby give printhead ink supply fully.

The CN1358137 Chinese invention patent application that name is called " printing equipment with print cartridge and ink-jet printing device " discloses a kind of ink-cases of printers, it makes the bag of the black liquid of inner encapsulation with flexible material, bag places the shell of airtight conditions, can import forced air under applying working condition black liquid is flowed out from ink outlet port in shell.The ink supply port of this print cartridge is equipped with a self-closing valve, and this valve only when print cartridge is packed the box storehouse into, is just opened by the butt joint in the box storehouse, forms an ink-feed channel that seals with the external world, and when taking out print cartridge from the box storehouse, this valve cuts out automatically, prevents surplus China ink outflow in the box.Usually, the shell of this class print cartridge is made of last lower casing, lower casing is flat box-shaped, and is open above, and inside can hold the China ink bag of the black liquid of encapsulation, in order to push down the four edges of the China ink bag that is contained in the lower casing, the quadrangle middle cover that also to insert a central portion be fenestra, and, film of hot melt apposition in the edge portion that the edge of opening of lower casing forms, lower casing is sealed into airtight conditions, and the last shell that is flat box-shaped is loaded on film top.In addition, between last lower casing, also have the button bit that is provided with at interval, make it removably to fasten, adopts such structure be when preventing from lower casing, to add air pressure film because of the outside protrusion of pressurized.

The structure more complicated of print cartridge as mentioned above, not only manufacturing cost and use cost is very high, and, also mutually very high requirement should be arranged to manufacturing process, the production of print cartridge needs multiple working procedure and just can finish, and yield rate is low in the production process, and the probability that breaks down in transportation and the use is also higher.In addition, this print cartridge is when reclaiming renewing, and technology is complicated more, needs to have the China ink bag whole updating of self-closing valve mostly, and cost is higher.

Summary of the invention

The objective of the invention is to provide the print cartridge simple in structure that adds the special use of air pressure ink supply class line-at-a-time printer;

Another object of the present invention is to provide can reach under the better print quality prerequisite, reclaims the print cartridge that the time spent is convenient to renewing again.

For achieving the above object, the ink-jet printer cartridge that the present invention is given, comprise that one is held ink and airtight housing, on the face of housing the tracheae that can dock with printer is arranged, location-plate and ink outlet port, ink outlet port is the port of a self-closing valve outside black chamber, adaptive to guarantee with the printer box storehouse of used model, it is packed into before the box storehouse, self-closing valve cuts out, Mo Buhui in the China ink chamber flows out from ink outlet port, and behind the box storehouse of packing into, self-closing valve is opened and can be to the printhead ink supply, alignment pin in the box storehouse can inject on the location-plate locating hole, guarantee ink outlet port, ink guide tube in tracheae and the box storehouse, air pumping pipe seals butt joint exactly.

In box body inside, the port of self-closing valve in black chamber is positioned at the low level place in black chamber, can residual as few as possible black liquid.The end of tracheae outside housing is the import of a check valve, end in housing is the outlet of check valve, the outlet of check valve is positioned at the high level in black chamber, when the import of check valve adds air pressure, one-way valve opens, forced air enters black chamber, force black liquid to flow out from ink outlet port, when print cartridge leaves the box storehouse, check valve is closed voluntarily, prevents that black liquid from leaking from tracheae, because the outlet of check valve is positioned at the high level in black chamber, in the process that forced air enters, can not make black liquid produce bubble, cause gas to enter printhead.

By above scheme as seen, compare to the disclosed print cartridge of CN1358137 Chinese invention patent application, the present invention has saved a China ink bag, and pushes down the middle cover on China ink bag four limits, the film of sealing lower casing, and the structure of print cartridge is simplified relatively.Because the black chamber of sealing communicates with the external world by ink outlet port and endotracheal two valves, make the simplification of filling process in the production process and the cleaning in the renewing process and filling process become possibility.Damaged China ink bag easily taking place when having saved renewing, not only reduced cost, has also reduced environmental pollution.

Description of drawings

Fig. 1 is the stereo appearance figure of embodiment;

Fig. 2 is the front view of embodiment;

Fig. 3 is the rearview of Fig. 2, and the part is analysed;

Fig. 4 is the A-A cutaway view of Fig. 3;

Fig. 5 is the C-C cutaway view of Fig. 3;

Fig. 6 is the E partial enlarged drawing of Fig. 4;

Fig. 7 is the F partial enlarged drawing of Fig. 5;

Fig. 8 is the B-B cutaway view of Fig. 4;

Fig. 9 is the left view of Fig. 4;

Figure 10 is the left end partial view of Fig. 3;

Figure 11 is the D-D cutaway view of Fig. 3;

Figure 12 is the structure chart of another embodiment check valve;

Figure 13 is the G-G cutaway view of Figure 12.

The present invention is further described below in conjunction with embodiment and accompanying drawing thereof.

Embodiment

Referring to Fig. 1, print cartridge is bordering on cubical housing 1 by one and constitutes with its uncovered lid 7 of envelope, and both can adopt ultrasonic wave fusion weldering to be tightly connected, and its inside is black chamber.See that with the location status after the installation its front end has storage and the circuit substrate seat 2 of reading the storing apparatus of black liquid information from top to bottom respectively, have location-plate 3 and 5, ink outlet port 4 and the tracheae 6 of locating hole.Can fix the circuit substrate that relevant power socket keeps good electrical to connect in an energy and the printer box storehouse on the substrate holder 2, ink outlet port 4 and tracheae 6 also dock with ink guide tube and air pumping pipe sealing in the box storehouse respectively, the conducting immediately of butt joint back self-closing valve, ink outlet port 4 is in can be to the state of ink guide tube inking, when printhead needs ink supply, the printer central processing unit can provide the instruction booster air pump, forced gas supply in tracheae 6.Two guide-localization posts in the box storehouse also can penetrate location-plate 3,5, to guarantee the stable butt joint of circuit and each pipeline.

Referring to Fig. 2,, form the strengthening rib strip 9 of vertical layout and the rib 8 of lateral arrangement in the outside of housing 1 for the housing 1 that guarantees thin wall shape has certain rigid.

Referring to Fig. 3, the end of self-closing valve 10 in black chamber 16 extends to position, end portion by managing 11, and the end of tracheae in black chamber 16 then extends to high-order portion by managing 12, and its end is a check valve 14, and check valve 14 is fixed on the housing by pipe clamp 15.The housing inboard also forms the rib in length and breadth 13 that increases rigidity.

Referring to Fig. 4, housing 1 adopts the ultrasonic sealing welding with lid 7 on annular contact surface all around, form a black chamber 16 that outer rigid housing is arranged.The structure of self-closing valve and operation principle are seen the explanation to Fig. 6.The port that self-closing valve is positioned at the print cartridge outside is an ink outlet port, and the port that is positioned at black chamber connects a pipe, and the other end of pipe is fixed on the low level place in black chamber, print cartridge installation back.

Referring to Fig. 5, tracheae 6 one ends are fixed on the shell wall side identical with self-closing valve, and its end in black chamber 16 is fixed on the high level in black chamber, print cartridge installation back.

Referring to Fig. 6, the structure and the operation principle of self-closing valve are summarized as follows, self-closing valve is an assembly, valve body 20 is fixed on the side of cartridge case by a seal 23, the valve body 20 that has tubular cavity has an ink outlet port 4 and an another port 22 that is positioned at black chamber 16, and this port 22 is connected to pipe 11, valve body 20 built-in springs 21, spool 19 relies on the restoring force of spring 21 to be pressed on the passway of sealing ring 18, makes self-closing valve be in closed condition.When the print cartridge installation is used, ingress pipe in the printer box storehouse and self-closing valve tubular cavity coaxial line, and be pressed into from sealing ring ink outlet port 4 ends, the restoring force that overcomes spring 21 makes spool 19 move to diagram dextrad, and pipe 11, the tubular cavity of valve, ingress pipe have constituted the inking channel that connects black chamber 16 and printhead.Print cartridge is pulled down when leaving the box storehouse, because ingress pipe is withdrawn and the effect of spring 21 restoring forces, spool 19 returns the position of diagram near sealing ring 18, the shutoff passage.

Referring to Fig. 7, pipe 12 is arranged with the termination of the integrated tracheae 6 of cartridge case in black chamber 16.

Referring to Fig. 8, Fig. 9 and since present embodiment with the specific connection request of adaptive printer, its panel seat 2 of circuit, location-plate 3 and 5, ink outlet port 4, tracheae 6 are positioned on the same end face of housing substantially.

Referring to Figure 10, pipe 11 blotting one end is positioned at the low level place in black chamber 16, the China ink in the chamber is all confessed as much as possible guaranteeing.The termination of pipe 11 is fixed on the housing wall with a locator card 24.

Referring to Figure 11, the termination of pipe 12 is check valves 14, and check valve 14 is combined by end cover 27, spool 28, gland 26.End cover 27 has a through hole 29, and there is a bulge loop 33 in 29 1 weeks of through hole.The spool 28 that elastomeric material is made has one to support 32, one supporting arm parts of foot, 34, one supports shoulder 31 and a supporting head part 35 that has through hole.Gland 26 has a valve face 30, and several through holes 36 in non-valve face district reach and pipe 12 joints that dock 25.There is the shirt rim of scrobicular ring shape in the support foot 32 of spool 28, it is pressed between the straight wall portion of end cover bulge loop 33 and gland 26, the supporting head part 35 of spool 28 flexibly is pressed on the valve face 30 of gland 26, and the through hole of valve face 30 shutoff supporting head parts 35 makes check valve be in closed condition.When tracheae 12 adds air pressure, pressure will make supporting arm part 34 and the joint portion of supporting shoulder 31 that angle takes place to change, and supporting head part 35 leaves valve face 30, makes check valve be in opening.

Referring to Figure 12,13, as another embodiment of the present invention, check valve 37 can also be a body that elastomeric material is made, body one end is uncovered, tightly be enclosed within the termination of tracheae 12, the elastic force of the slit 38 common tube walls self on its tube wall closes, and check valve is in closed condition.When tracheae 12 adds air pressure, body is along circumferential expansion, and open under the effect of tube wall week internal force in slit 38, and check valve is in opening.

Claims

1, ink-jet printer cartridge comprises that one holds ink and airtight housing, on the face of housing tracheae, location-plate and the ink outlet port that can dock with printer is arranged, and ink outlet port is the port of a self-closing valve outside black chamber;

It is characterized in that:

The port of self-closing valve in black chamber is positioned at the low level place in black chamber;

The end of tracheae outside housing is the import of a check valve, and the end in housing is the outlet of check valve.

2, ink-jet printer cartridge according to claim 1 is characterized in that:

Described check valve is positioned at the high level in black chamber, and its import is led to outside the housing by a pipeline.

3, ink-jet printer cartridge according to claim 2 is characterized in that:

Described check valve is the body that an elastomeric material is made, and the one end is uncovered, other end sealing, and tube wall has the slit of consistent poling inside and outside, this slit and body axially parallel.

4, ink-jet printer cartridge according to claim 1 and 2 is characterized in that:

Described check valve is an assembly, and it has

One bottom has the end cover of through hole, is used to place spool;

One has the gland of through hole, and

One rubber-like spool between end cover and gland;

The non through hole portion of spool and gland compresses sealing.

5, ink-jet printer cartridge according to claim 4 is characterized in that described spool is the single-revolution body and has following structure:

One supports foot, contacts with the bottom sealing of end cover;

One supporting arm part supports the medial eminence of foot from this;

One supports shoulder, is bent to form to the inside from this supporting arm part;

One supporting head part supports the shoulder protuberance from this, and is penetrated with a central through hole.

6, check valve according to claim 4 is characterized in that:

The feet lower edge of spool has a shirt rim;

End cover is made of straight-arm portion and flat bottoms, and there is a bulge loop that centers on through hole and coincide with the shirt rim at the interior end;

Gland is made of top cover portion and straight wall portion, and the top cover middle section is a valve face, and the district has a through hole at least at the non-valve face of gland;

The shirt rim sealing of spool is squeezed between the end face of end cover bulge loop and the straight wall of gland portion.