1. Field of the Invention
The invention relates to an inkjet cartridge and a basic inkjet cartridge structure with a plurality of partitions. In particular, the invention relates to an inkjet cartridge with simplified process preventing intermixture of ink.
2. Description of the Related Art
The dramatic development of inkjet printing technology has yielded many advantages, including low cost and noiseless operation. The printing quality provided by inkjet printing technology is adequate for full-color printing. Additionally, inkjet printing is suitable for a variety mediums including plain paper, special printing paper, film, and transparencies. Moreover, inkjet printing is a non-contact method that dispenses droplets of ink onto a medium.
Inkjet cartridges can be substantially divided into three types. The first type is a printer with an integrally formed print head and a separable inkjet cartridge, such as Epson. The second one is a printer with a separable print head and a separable inkjet cartridge, such as Canon. The third one is a printer with an inkjet cartridge combined with a print head, such as HP and Lexmark. Regardless of the type of inkjet cartridge, the ink is stored in a chamber, and flows into the print head via the channel to be dispensed.
A conventional inkjet cartridge 100 is disclosed in U.S. Pat. No. 5,831,653.
Referring to
Since the ink in chambers 110, and 130 flows out of exits 112, and 132 via different channels 111, and 131, two openings 140 are formed on both sides of the inkjet cartridge 100 as shown in
Using plugs to seal the openings at both sides during assembly, however, complicates the assembly process. Additionally, a similar structure is also disclosed in U.S. Pat. Nos. 5,497,198 and U.S. Pat. No. 5,576,750.
The openings of different channels are however, sealed by the same plug, and may result in the intermixture of the ink in different chambers when errors occur during manufacturing.
In view of this, the invention provides an inkjet cartridge with simplified process preventing the intermixture of ink.
Specifically, in the inkjet cartridge of the invention, different kinds of ink flow through different passages. Additionally, when the body of the inkjet cartridge is integrally formed by injection molding, an opening, located in a sidewall of the body, is sealed by a member. Furthermore, to prevent intermixture of different inks due to errors in the manufacturing process, only a single opening, sealed by single member is provided. Thus, the assembly process is simplified, and the printing quality of the inkjet cartridge can be maintained. As a result, inkjet cartridge yield can be increased.
Accordingly, the invention provides an inkjet cartridge including a body and a seal member. The body includes a first chamber, a second chamber, a third chamber, a first exit, a second exit, a third exit, an opening, and a channel. Ink is received in the first chamber, the second chamber, and the third chamber respectively. The second chamber communicates with the second exit so that the ink in the second chamber flows directly to the second exit. The third chamber communicates with the third exit so that the ink in the third chamber flows directly to the third exit. The channel communicates the first chamber and the first exit so that the ink in the first chamber flows to the first exit via the channel. The seal member is disposed on the channel via the opening, sealing the channel to prevent ink in the first chamber flowing through the first exit from flowing out of the opening.
In a preferred embodiment, the inkjet cartridge further includes a chip and a first divider plate. The chip includes a first hole, a second hole, and a third hole. The chip is disposed on the body in a manner such that the first hole, the second hole, and the third hole correspond to the first exit, the second exit, and the third exit respectively. The first hole is located between the second hole and the third hole. The second hole and the second exit are overlapping, and the third hole and the third exit are overlapping. The first divider plate separates the first chamber and the second chamber. The first hole, the second hole, the third hole are aligned in a straight line, and the straight line is substantially parallel with the first divider plate.
In another preferred embodiment, the third hole is located between the first hole and the second hole. The second hole and the second exit are overlapping, and the third hole and the third exit are overlapping. The inkjet cartridge further includes a second divider plate and a third divider plate. The second divider plate separates the second chamber and the third chamber, and the third divider plate separates the first chamber and the second chamber. The first hole, the second hole, the third hole are aligned in a straight line, and the straight line is substantially parallel with the second divider plate. The first hole is closer to the third divider plate than the second hole.
In another preferred embodiment, the seal member is made of the same material as the body. The hardness of a portion, adjacent to the opening, of the body is lower than the other portion of the body.
In another preferred embodiment, the seal member includes a bottom portion and an extended portion. The bottom portion is disposed on the opening, and seals the opening. The extended portion extends in the channel and corresponds to the shape of the channel so that the ink in the first chamber flows smoothly in the channel. The first chamber includes a through hole abutted by the extended portion of the seal member.
In the invention, a structure, for an inkjet cartridge with a plurality of partitions, includes an integrally formed body. The body includes a first chamber, a second chamber, a third chamber, a first exit, a second exit, a third exit, an opening, and a channel. Ink is received in the first chamber, the second chamber, and the third chamber respectively. The second chamber communicates with the second exit so that the ink in the second chamber flows directly to the second exit. The third chamber communicates with the third exit so that the ink in the third chamber flows directly to the third exit. The channel communicates the first chamber and the first exit so that the ink in the first chamber flows to the first exit via the channel. The body and the channel are a single member.
The present invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:
a is a perspective view of a conventional inkjet cartridge as disclosed in U.S. Pat. No. 5,831,653;
b is a perspective view of a bottom portion of the inkjet cartridge in
c is a detailed perspective view of a partial section of the inkjet cartridge shown in
a is a schematic view of an inkjet cartridge as disclosed in a first embodiment of the invention;
b is a cross section of the inkjet cartridge in
c is a top view of the inkjet cartridge in
d is a schematic view showing a relationship among a second chamber, a seal member, and a channel;
First embodiment
a–3d are schematic views of an inkjet cartridge 300 as disclosed in a first embodiment of the invention. The inkjet cartridge 300 dispenses ink I, and includes a body 310, a seal member 320, a chip 330, and a cover 340. The body 310 and the seal member 320 constitute a basic structure 700 of the inkjet cartridge of this embodiment.
The body 310 is a container, and receives ink I through its outer walls. The interior of the body 310 is divided by inner walls into a first chamber 311, a second chamber 312, and a third chamber 313. Different kinds of ink are received in the first chamber 311, the second chamber 312, and the third chamber 313 respectively. The second chamber 312 is located between the first chamber 311 and the third chamber 313. That is, the first chamber 311, the second chamber 312, and the third chamber 313 are juxtaposed in the body 310.
The first chamber 311, the second chamber 312, and the third chamber 313 include a first inlet 311b, a second inlet 312b, and a third inlet 313b at their top surfaces respectively. Ink flows into the first chamber 311, the second chamber 312, and the third chamber 313 through the first inlet 311b, the second inlet 312b, and the third inlet 313b respectively.
The body 310 includes first exit 314, second exit 315, and third exit 316 in the bottom surface, and an opening 318 formed in the side. A channel 317 is formed in the body 310. The first exit 314 is located between the second exit 315 and the third exit 316.
Referring to
Referring to
In the inkjet cartridge 300 of this embodiment, the ink in two chambers 312, 313 can flow directly to two exits 315, 316 without flowing through additional channels. Thus, in the basic structure 700 of the invention, only one channel 317 is formed in the body 310. The channel 317 communicates the first chamber 311 and the first exit 314 so that the ink in the first chamber 311 can flow to the first exit 314 via the channel 317. That is, the first chamber 311 and the first exit 314 do not overlap in a plumb direction.
Additionally, since only one channel 317 is formed in the body 310 of the inkjet cartridge 300 of this embodiment, only one mold is inserted into one side of the body 310 during manufacture. That is, after the body 310 is integrally formed, only one opening 318 is formed in one side. It is noted that the hardness of a portion, adjacent to the opening 318, of the body 310 may be lower than the other portion of the body 310.
The seal member 320 is disposed on the channel 317 of the body 310 via the opening 318, and seals the channel 317 to prevent ink in the first chamber 311 flowing through the first exit 314 from flowing out of the opening 318. Thus, in the inkjet cartridge 300 of this embodiment, intermixture of ink in different chambers is prevented.
The seal member 320 includes a bottom portion 321 and an extended portion 322. The bottom portion 321 is closely disposed in the opening 318, and seals the opening 318. As shown in
As shown in
It is understood that the seal member 320 may be made of the same material as the body 310.
The chip 330 actuates the dispensing of ink, and is disposed on the bottom surface of the body 310. The chip 330 includes a first hole 331, a second hole 332, and a third hole 333. The first hole 331 is located between the second hole 332 and the third hole 333. When the chip 330 is disposed on the bottom surface of the body 310, the first hole 331, the second hole 332, and the third hole 333 correspond to the first exit 314, the second exit 315, and the third exit 316 of the body 310 in order. That is, the first hole 331 of the chip 330 and the first chamber 311 of the body 310 do not overlap in a plumb direction.
The cover 340 is disposed on the top surface of the body 310, and seals the first inlet 311b, the second inlet 312b, and the third inlet 313b.
By means of the above structure, different kinds of ink flow in different passages respectively in the inkjet cartridge of this embodiment. Since only one channel is formed in the body when the body is integrally formed by injection molding, only one opening is sealed by one seal member. Thus, the channel can be completely sealed preventing intermixture of different kinds of ink. As a result, the printing quality of the inkjet cartridge of this embodiment can be maintained.
Additionally, in this embodiment, different kinds of ink flow independently through different passages, and the channel is completely sealed as only a single opening is sealed by a single seal member, thus simplifying inkjet cartridge assembly. Furthermore, only one kind of ink passes through one opening. When the opening is sealed, the intermixture will not occur due to manufacturing errors. Thus, the intermixture is prevented, and yield is increased.
Second Embodiment
The body 410 is divided by inner walls into a first chamber 411, a second chamber 412, and a third chamber 413. The second chamber 412 is located between the first chamber 411 and the third chamber 413. That is, the first chamber 411, the second chamber 412, and the third chamber 413 are juxtaposed in the body 410. It is noted that a divider plate 419b between the second chamber 412 and the third chamber 413 is an inclined surface as shown in
The body 410 includes a first exit 414, a second exit 415, and a third exit 416 in the bottom surface, and an opening 418 is formed in the side. A channel 417 is formed in the body 410.
Referring to
In the inkjet cartridge 400 of this embodiment, the ink in two chambers 412, 413 can flow directly to two exits 415, 416 respectively without flowing through additional channels. Thus, in the inkjet cartridge 400 of this embodiment, only one channel 417 is formed in the body 410. The channel 417 communicates the first chamber 411 and the first exit 414 so that the ink in the first chamber 411 can flow to the first exit 414 via the channel 417. That is, the first chamber 411 and the first exit 414 do not overlap in a plumb direction.
Additionally, since only one channel 417 is formed in the body 410 of the inkjet cartridge 400 of this embodiment, only one mold is inserted in one side of the body 410 when the body 410 is manufactured. That is, after the body 410 is integrally formed, only one opening 418 is formed in one side.
The seal member 420 is disposed on the channel 417 of the body 410 via the opening 418, and seals the channel 418 to prevent ink in the first chamber 411 flowing through the first exit 414 from flowing out of the opening 418. Thus, in the inkjet cartridge 400 of this embodiment, intermixture of ink in different chambers is prevented.
The chip 430 is disposed on the bottom surface of the body 410, and includes a first hole 431, a second hole 432, and a third hole 433. The first hole 431 is located between the second hole 432 and the third hole 433. When the chip 430 is disposed on the bottom surface of the body 410, the first hole 431, the second hole 432, and the third hole 433 correspond to the first exit 414, the second exit 415, and the third exit 416 of the body 410 sequentially since the divider plate 419b has an inclined surface.
By means of the above structure, different kinds of ink flow in different passages respectively in the inkjet cartridge of this embodiment. Since only one channel is formed in the body when the body is integrally formed by injection molding, only a single opening is sealed by a single seal member. Thus, the channel can be completely sealed preventing intermixture of different kinds of ink. As a result, the printing quality of the inkjet cartridge of this embodiment can be maintained.
Additionally, in this embodiment, different kinds of ink flow independently through different passages, and the channel is completely sealed as only a single opening is sealed by a single seal member, thus simplifying inkjet cartridge assembly. Furthermore, only one kind of ink passes through one opening. When the opening is sealed, the intermixture will not occur due to manufacturing errors. Thus, the intermixture is prevented, and yield is increased.
Third Embodiment
The body 510 is divided into a first chamber 511, a second chamber 512, and a third chamber 513 by its inner walls. The second chamber 512 and the third chamber 513 are juxtaposed in the body 510, and they are located on the same side of the first chamber 511. That is, the chambers 511, 512, 513 are adjacent to each other as shown in
The body 510 includes a first exit 514, a second exit 515, and a third exit 516 in the bottom surface, and an opening 518 formed in the side. A channel 517 is formed in the body 510.
Referring to
In the inkjet cartridge 500 of this embodiment, the ink in two chambers 512, 513 can flow directly to two exits 515, 516 respectively without flowing through additional channels. Thus, in the inkjet cartridge 500 of this embodiment, only one channel 517 is formed in the body 510. The channel 517 communicates the first chamber 511 and the first exit 514 so that the ink in the first chamber 511 can flow to the first exit 514 via the channel 517. That is, the first chamber 511 and the first exit 514 do not overlap in a plumb direction.
Additionally, since only one channel 517 is formed in the body 510 of the inkjet cartridge 500 of this embodiment, only one mold is inserted in one side of the body 510 when the body 510 is manufactured. That is, after the body 510 is integrally formed, only one opening 518 is formed in one side.
The seal member 520 is disposed on the channel 517 of the body 510 via the opening 518, and seals the channel 518 to prevent ink in the first chamber 511 flowing through the first exit 514 from flowing out of the opening 518. Thus, in the inkjet cartridge 500 of this embodiment, intermixture of ink in different chambers is prevented.
The chip 530 is disposed on the bottom surface of the body 510, and includes a first hole 531, a second hole 532, and a third hole 533. The first hole 531 is located between the second hole 532 and the third hole 533. When the chip 530 is disposed on the bottom surface of the body 510, the first hole 531, the second hole 532, and the third hole 533 correspond to the first exit 514, the second exit 515, and the third exit 516 of the body 510 in order. That is, the first hole 531 of the chip 530 and the first chamber 511 of the body 510 are not overlapping in a plumb direction.
Furthermore, the first hole 531, the second hole 532, and the third hole 533 are aligned in a straight line as shown in
By means of the above structure, different kinds of ink flow in different passages respectively in the inkjet cartridge of this embodiment. Since only one channel is formed in the body when the body is integrally formed by injection molding, only a single opening is sealed by a single seal member. Thus, the channel can be completely sealed preventing intermixture of different kinds of ink. As a result, the printing quality of the inkjet cartridge of this embodiment can be maintained.
Additionally, in this embodiment, different kinds of ink flow independently through different passages, and the channel is completely sealed as only a single opening is sealed by a single seal member, thus simplifying inkjet cartridge assembly. Furthermore, only one kind of ink passes through one opening. When the opening is sealed, the intermixture will not occur due to manufacturing errors. Thus, the intermixture is prevented, and yield is increased
Fourth Embodiment
The body 610 is divided by inner walls into a first chamber 611, a second chamber 612, and a third chamber 613. The second chamber 612 and the third chamber 613 are disposed in the body 610, and they are located on the same side of the first chamber 611. That is, the chambers 611, 612, 613 are adjacent to each other as shown in
The body 610 includes a first exit 614, a second exit 615, and a third exit 616 in the bottom surface, and an opening 618 formed in the side. A channel 617 is formed in the body 610.
Referring to
In the inkjet cartridge 600 of this embodiment, the ink in two chambers 612, 613 can flow directly to two exits 615, 616 respectively without flowing through additional channels. Thus, in the inkjet cartridge 600 of this embodiment, only one channel 617 is formed in the body 610. The channel 617 communicates the first chamber 611 and the first exit 614 so that the ink in the first chamber 611 flow to the first exit 614 via the channel 617. That is, the first chamber 611 and the first exit 614 do not overlap in a plumb direction.
Additionally, since only one channel 617 is formed in the body 610 of the inkjet cartridge 600 of this embodiment, only one mold is inserted in one side of the body 610 when the body 610 is manufactured. That is, after the body 610 is integrally formed, only one opening 618 is formed in one side.
The seal member 620 is disposed on the channel 617 of the body 610 via the opening 618, and seals the channel 618 to prevent ink in the first chamber 611 flowing through the first exit 614 from flowing out of the opening 618. Thus, in the inkjet cartridge 600 of this embodiment, only one channel 617 is sealed by one seal member 620, intermixture of ink in different chambers is prevented.
The chip 630 is disposed on the bottom surface of the body 610, and includes a first hole 631, a second hole 632, and a third hole 633. The third hole 633 is located between the first hole 631 and the second hole 632. It is noted that the type of the chip of this embodiment is different from that of the third embodiment. That is, the holes 631, 632, 633 are parallel with each other, unlike the third embodiment. When the chip 630 is disposed on the bottom surface of the body 610, the first hole 631, the second hole 632, and the third hole 633 correspond to the first exit 614, the second exit 615, and the third exit 616 of the body 610 in order. That is, the first hole 631 of the chip 630 and the first chamber 611 of the body 610 are not overlapping in a plumb direction.
Furthermore, the first hole 631, the second hole 632, the third hole 633 are aligned in a straight line as shown in
By means of the above structure, different kinds of ink flow in different passages respectively in the inkjet cartridge of this embodiment. Since only one channel is formed in the body when the body is integrally formed by injection molding, only a single opening is sealed by a single seal member. Thus, the channel can be completely sealed preventing intermixture of different kinds of ink. As a result, the printing quality of the inkjet cartridge of this embodiment can be maintained.
Additionally, in this embodiment, different kinds of ink flow independently through different passages, and the channel is completely sealed as only a single opening is sealed by a single seal member, thus simplifying inkjet cartridge assembly. Furthermore, only one kind of ink passes through one opening. When the opening is sealed, the intermixture will not occur due to manufacturing errors. Thus, the intermixture is prevented, and yield is increased
While the invention has been described by way of example and in terms of the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. To the contrary, it is intended to flipper various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.
Number | Date | Country | Kind |
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92108096 A | Apr 2003 | TW | national |
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Number | Date | Country | |
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20040201653 A1 | Oct 2004 | US |