Pinch seal providing fluid interconnects between fluid delivery system components

Information

  • Patent Grant
  • 6648458
  • Patent Number
    6,648,458
  • Date Filed
    Tuesday, April 23, 2002
    22 years ago
  • Date Issued
    Tuesday, November 18, 2003
    20 years ago
Abstract
A marking fluid valve for a marking fluid delivery system of a media marking device. The marking fluid valve includes a resilient body having first and second opposite ends in fluid communication with one another, with the first end having a pair of opposed lips. The pair of opposed lips define a normally closed slit extending therebetween. Compressing the first end of the resilient body along axes of the lips deforms the resilient body from a closed position, in which the lips are in contact with one another to close the slit and prevent marking fluid from passing through the slit, to an open position, in which the lips are spread at least partially apart from one another to enable marking fluid to pass through the slit.
Description




TECHNICAL FIELD




This invention relates to printing devices. In particular, the present invention is a fluid delivery system that employs pinch seal fluid interconnects to fluidly interconnect separable fluid delivery system components.




BACKGROUND OF THE INVENTION




Throughout the business world, inkjet printing systems are extensively used for image reproduction. Inkjet printers frequently make use of an inkjet printhead mounted within a carriage that is moved back and forth across print media, such as paper. As the printhead is moved relative to the print media, a control system activates the printhead to deposit or eject ink droplets onto the print media to form images and text. Such systems may be used in a wide variety of applications, including computer printers, plotters, copiers and facsimile machines.




Ink is provided to the printhead by a supply of ink that is either integral with the printhead, as in the case of a disposable print cartridge, or by a supply of ink that is replaceable separate from the printhead. One type of previously used printing system makes use of an ink supply that is carried with the carriage. This ink supply has been formed integral with the printhead, whereupon the entire printhead and ink supply are replaced when ink is exhausted. Alternatively, the ink supply can be carried with the carriage and be separately replaceable from the printhead. As a further alternative, the ink supply can be mounted to the printing system such that the ink supply does not move with the carriage. For the case where the ink supply is not carried with the carriage, the ink supply can be in fluid communication with the printhead to replenish the printhead or the printhead can be intermittently connected with the ink supply by positioning the printhead proximate to a filling station to which the ink supply is connected whereupon the printhead is replenished with ink from the refilling station. Generally, when the ink supply is separately replaceable, the ink supply is replaced when exhausted. The printhead is then replaced at the end of printhead life. Regardless of where the ink supply is located within the printing system, it is critical that the ink supply provides a reliable supply of ink to the inkjet printhead.




No matter what the arrangement of the ink supply and printhead, it is crucial that the replaceable ink supply and printhead be capable of establishing a reliable fluid connection with the printing system or with one another. This fluid interconnection should be capable of repeated disconnects and reconnects as the ink supply and printhead are removed and installed. Moreover, the fluid interconnect should be robust enough to prevent leakage under normal operating and non-operating conditions and under various environmental conditions. In addition, the fluid interconnects should prevent drooling of fluid when the ink supply and printhead are separated from the printing system. The fluid interconnections between the ink supply, printing system and printhead should reliably provide these features throughout the useful life of these fluid delivery system components so as to preclude premature replacement of these components and the associated cost. Lastly, the fluid interconnect should be relatively easy and inexpensive to manufacture, and relatively simple to incorporate into these components used in ink delivery systems of thermal inkjet printing systems.




SUMMARY OF THE INVENTION




The present invention is a marking fluid valve for a marking fluid delivery system of a media marking device. The marking fluid valve comprises a resilient body having first and second opposite ends in fluid communication with one another. The first end of the resilient body includes a pair of opposed lips. The pair of opposed lips define a normally closed slit extending therebetween, wherein compressing the first end of the resilient body along the axis of the lips deforms the resilient body from a closed position, in which the lips are in contact with one another to close the slit and prevent marking fluid from passing through the slit, to an open position, in which the lips are spread at least partially apart from one another to enable marking fluid to pass through the slit.




The pinch seal interconnects function to provide reliable fluid interconnects between fluid delivery system components, such as fluid supply containers, printheads and manifold structures of a printing device. The pinch seal fluid interconnects prevent drooling of fluid, when fluid delivery system components are separated.











BRIEF DESCRIPTION OF THE DRAWINGS




The accompanying drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification. The drawings illustrate the embodiments of the present invention and together with the description serve to explain the principles of the invention. Other embodiments of the present invention and many of the intended advantages of the present invention will be readily appreciated as the same become better understood by reference to the following detailed description when considered in connection with the accompanying drawings, in which like reference numerals designate like parts throughout the figures thereof, and wherein:





FIG. 1

is a perspective view of an exemplary printing system with a cover opened to show a plurality of replaceable ink containers, a receiving station, and a plurality of replaceable printhead cartridges incorporating pinch seal fluid interconnects in accordance with one embodiment of the present invention.





FIG. 2

is a perspective view a portion of a scanning carriage showing the replaceable ink containers positioned in the receiving station which includes a manifold that provides fluid communication between the replaceable ink containers and one or more printhead cartridges.





FIG. 3



a


is a side elevational view of an exemplary embodiment of the pinch valve positioned to be received by a tubular member that together define the pinch seal fluid interconnect of one embodiment of the present invention.





FIG. 3



b


is a side elevational view similar to

FIG. 3



a


showing the exemplary embodiment of the pinch valve engaged with the tubular member and marking fluid flowing out of the pinch valve.





FIG. 4



a


is a perspective view of an exemplary embodiment pinch valve that forms a part of the pinch seal fluid interconnect in accordance with one embodiment of the present invention, with the pinch valve shown in a closed state.





FIG. 4



b


is a top plan view of the exemplary embodiment pinch valve in a closed state of

FIG. 3



a.







FIG. 4



c


is a sectional view taken along lines


4




c





4




c


in

FIG. 4



b.







FIG. 4



d


is a sectional view taken along lines


4




d





4




d


in

FIG. 4



b.







FIG. 4



e


is a top plan view of the exemplary embodiment pinch valve of

FIGS. 4



a


through


4




d


but shown in an opened state.





FIG. 4



f


is a sectional view taken along lines


4




f





4




f


in

FIG. 4



e.







FIG. 5

is a side elevational view similar to

FIG. 3



b


showing the exemplary embodiment pinch valve engaged with the tubular member and marking fluid flowing into the pinch valve.





FIG. 6



a


is a side elevational view of an exemplary embodiment pinch seal fluid interconnect showing the elements of the fluid interconnect in a disengaged state in accordance with one further embodiment of the present invention.





FIG. 6



b


is a side elevational view similar to

FIG. 6



a


showing the elements of the fluid interconnect engaged with one another.





FIG. 7



a


is a side elevational view of an exemplary embodiment pinch seal fluid interconnect showing the elements of the fluid interconnect in a disengaged state in accordance with still one further embodiment of the present invention.





FIG. 7



b


is a side elevational view similar to

FIG. 7



a


showing the elements of the fluid interconnect engaged with one another.











DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS




Exemplary pinch seal fluid interconnect


40


(see

FIGS. 3



a


and


3




b


) in accordance with one embodiment of the present invention are useable to fluidically couple a replaceable fluid supply container


12


, a manifold such as receiving station


14


, and a printhead cartridge


16


of a thermal inkjet printing system


10


generally illustrated in

FIGS. 1

,


2


,


3




a


and


3




b.






In

FIG. 1

, the exemplary printing system


10


, shown with its cover open, includes at least one replaceable fluid supply container


12


that is installed in a receiving station


14


. In one preferred embodiment, the printing system


10


includes two replaceable fluid supply containers


12


. With the replaceable fluid supply containers


12


properly installed into the receiving station


14


, marking fluid, such as ink, is provided from the replaceable fluid supply containers


12


to at least one inkjet printhead cartridge


16


by way of the receiving station


14


. In one preferred embodiment, one of the replaceable fluid supply containers


12


contains a single color fluid, such as black ink, while the other replaceable fluid supply container


12


contains multiple colors of fluid, such as cyan, magenta and yellow inks. Generally, the printing system


10


includes at least two replaceable printhead cartridges


16


, such as one single color printhead cartridge


16


for printing from the black ink supply, and one multi-color printhead cartridge


16


for printing from the cyan, magenta and yellow ink supplies. In one embodiment, the printing system


10


includes four replaceable printhead cartridges


16


, such that one printhead cartridge


16


is used for printing from each of the black, cyan, magenta and yellow ink supplies.




In operation, the inkjet printhead cartridges


16


are responsive to activation signals from a printer portion


18


to deposit fluid (i.e., ink) on print media


22


. As the fluid is ejected from the printhead cartridges


16


, the printhead cartridges


16


are replenished with fluid from the fluid containers


12


. In one preferred embodiment, the replaceable fluid containers


12


, receiving station


14


, and the replaceable inkjet printhead cartridges


16


are each part of a scanning carriage


20


that is moved relative to the print media


22


to accomplish printing. The printer portion


18


includes a media tray


24


for receiving the print media


22


. As the print media


22


is stepped through a print zone, the scanning carriage


20


moves the printhead cartridges


16


relative to the print media


22


. The printer portion


18


selectively activates the printhead cartridges


16


to deposit fluid on print media


22


to thereby accomplish printing.




The scanning carriage


20


of

FIG. 1

slides along a slide rod


26


to print along a width of the print media


22


. A positioning means (not shown) is used for precisely positioning the scanning carriage


20


. In addition, a paper advance mechanism (not shown) moves the print media


22


through the print zone as the scanning carriage


20


is moved along the slide rod


26


. Electrical signals are provided to the scanning carriage


20


for selectively activating the printhead cartridges


16


by means of an electrical link, such as a ribbon cable


28


.





FIG. 2

is a perspective view of a portion of the scanning carriage


20


showing the pair of replaceable fluid containers


12


properly installed in the receiving station


14


. For clarity, only a single inkjet printhead cartridge


16


is shown in fluid communication with the receiving station


14


. As seen in

FIG. 2

, each of the replaceable fluid containers


12


includes a latch


30


for securing the replaceable fluid container


12


to the receiving station


14


. In addition, the receiving station


14


includes a set of keys


32


that interact with corresponding keying features (not shown) on the replaceable fluid containers


12


. The keying features on the replaceable fluid containers


12


interact with the keys


32


on the receiving station


14


to ensure that the replaceable fluid containers


12


are compatible with the receiving station


14


.





FIGS. 3



a


and


3




b


illustrate the exemplary pinch seal fluid interconnect


40


in disengaged (

FIG. 3



a


) and engaged (

FIG. 3



b


) states in accordance with one embodiment of the present invention. The pinch seal fluid interconnect


40


is defined by a rigid tubular member


42


adapted to releasably receive a pinch valve member


44


. For the purposes of this discussion, the rigid tubular member


42


forms part of the receiving station (i.e., manifold)


14


, while the pinch valve member


44


is mounted on the replaceable fluid supply container


12


to form a reliable fluid interconnect therebetween. However, it is to be understood that the rigid tubular member


42


could form part of the printhead cartridge


16


, while the pinch valve member


44


is mounted on the receiving station


14


to form a reliable fluid interconnect between these two elements of the fluid delivery system of the printing system


10


.




As seen best in

FIGS. 4



a


-


4




f


, the exemplary pinch valve member


44


of the pinch seal fluid interconnect


40


has a resilient body


45


having a first end


46


, and an opposite second end


48


in fluid communication with the first end


46


. The resilient body


45


also includes an exterior surface


47


and an opposite interior surface


49


. As seen best in

FIGS. 4



a


,


4




c


,


4




d


and


4




f


, the resilient body


45


is substantially cone shaped between the first and second ends


46


and


48


. In particular, the second end


48


of the resilient body


45


has a greater circumferential dimension than the first end


46


, with a smooth transition therebetween. In one preferred embodiment, the resilient body


45


is formed of an elastomer material compatible with ink. The second end


48


of the resilient body includes an integral mounting flange


50


by which the resilient body


45


of the pinch valve member


44


is retained on the replaceable fluid supply container


12


(see

FIGS. 3



a


and


3




b


). To accomplish this, the fluid supply container


12


includes a clamping structure


52


which engages the mounting flange


50


, and secures the resilient body


45


of the pinch valve member


44


to the fluid supply container


12


. The resilient nature of the resilient body


45


together with the clamping force provided by the clamping structure


52


acts to form a fluid tight seal at the interface of the pinch valve member


44


and the fluid supply container


12


.




The first end


46


of the resilient body


45


includes a pair of opposed lips


54


. The lips


54


define a normally closed slit


56


(see

FIGS. 4



a


and


4




b


). Applying a compressive force to the exterior surface


47


of the resilient body


45


at the lips


54


deforms the lips


54


from a closed state (see

FIGS. 3



a


and


4




a


-


4




d


), in which the lips


54


are in contact with one another to close the slit


56


and prevent marking fluid


58


from passing through the slit


56


, to an opened state (see

FIGS. 3



b


,


4




e


and


4




f


), in which the lips are spread apart from one another to allow marking fluid


58


to pass through the slit


56


. In particular, the compressive force is a pair of oppositely directed compressive forces


60


(see

FIG. 4



e


) applied to the lips


54


in a direction along (i.e., parallel to) axes


62


of the lips


54


to deform the lips


54


of the resilient body


45


from the closed state to the opened state of the slit


56


. In other words, the pair of oppositely directed compressive forces


60


(see

FIG. 4



e


) are applied to the exterior surface


47


at the lips


54


and at opposite ends of the slit


56


in a direction generally parallel to a longitudinal extent of the slit


56


to deform the lips


54


at the first end


46


of the resilient body


45


from the closed state to the opened state of the slit


56


. Removal of the oppositely directed compressive forces


60


allows the lips


54


to return to their normal state in which the slit


56


is closed.




In

FIGS. 3



a


and


3




b


, the pinch valve member


44


forms a fluid outlet that allows marking fluid


58


to pass out of the fluid supply container


12


(or out of the receiving station


14


) through the resilient body


45


, from the second end


48


to the first end


46


thereof, and through the open slit


56


(in the opened state of the lips


54


) and into the receiving station (i.e., manifold)


14


(or into the printhead cartridge


16


). Alternatively, as illustrated in

FIG. 5

, the pinch valve member


44


could form a fluid outlet that allows marking fluid


58


to pass out of the fluid supply container


12


(or out of the receiving station


14


), into the open slit


56


(in the opened state of the lips


54


), through the resilient body


45


, from the first end


46


to the second end


48


thereof, and into the receiving station (i.e., manifold)


14


(or into the printhead cartridge


16


).




As seen best in

FIGS. 3



a


and


3




b


, the rigid tubular member


42


is adapted to releasably receive the pinch valve member


44


upon engagement of the fluid supply container


12


(or the receiving station


14


) with the receiving station


14


(or the printhead cartridge


16


). The rigid tubular member


42


has interior wall portions that define a lead-in region


64


and an actuating region


66


of the tubular member


42


. The actuating region


66


has a greater pitch than the lead-in portion


64


. As can be best viewed by comparing

FIGS. 3



a


and


3




b


, upon initial engagement of the container


12


with the receiving station


14


, the lead-in region


64


of the tubular member


42


acts to guide the first end


46


of the resilient body


45


into the actuating region


66


. Upon full engagement of the container


12


with the receiving station


14


, the actuating region


66


applies the oppositely directed compressive forces


60


to the lips


54


in order to deform the lips


54


and move the slit


56


from the closed state to the opened state to allow the marking fluid


58


to pass therethrough. The actuating region


66


applies the compressive forces


60


to the lips


54


of the resilient body because the diameter of the actuating region


66


is less than a maximum linear dimension between opposed points


68


(see

FIG. 4



b


) on the perimeter of the resilient body at lips


54


. Because the diameter of the actuating region is less than the maximum linear dimension at the lips


54


of the resilient body


45


, the lips


54


at the first end


46


are deformed when they enter into the actuating region


66


.




Pinch seal fluid interconnects


40


establish reliable fluid connections between the fluid supply container


12


and the receiving station


14


, and between the receiving station


14


and the printhead cartridge


16


. However, it is to be understood that the pinch seal fluid interconnect


40


of the present invention can also form a reliable fluid connection between a fluid supply container


12


and a printhead cartridge


16


. Moreover, it is to be understood that the pinch valve member


44


can act as a fluid outlet or a fluid inlet. In addition the pinch seal fluid interconnect


40


is capable of repeated disconnects and reconnects as the ink supply


12


and printhead


16


are removed and installed. Further, the resiliency of the pinch valve member


44


and the provision of the lead-in portion


64


of the tubular member


42


permits slight misalignment of the printer components to be connected while still insuring a reliable fluid interconnect. Since the pinch seal fluid interconnect


40


can tolerate some axial misalignment of the printer components to be connected, the printer components do not have to be manufactured to as high tolerances as prior printer components employing fluid interconnects that do not accommodate any misalignment of the printer components. Moreover, the pinch seal fluid interconnect


40


is robust enough to prevent leakage under normal operating and non-operating conditions and under various environmental conditions. In addition, the pinch valve member


44


prevents drooling of fluid when the ink supply


12


and printhead are separated from the printing system. To this end, the ink supply container


12


includes a guard


70


that prevents damage to the pinch valve member when the ink supply


12


has been removed from the printing system


10


. The pinch seal fluid interconnect


40


reliably provides these above features throughout the useful life of the fluid delivery system components of the printing system


10


so as to preclude premature replacement of these components and the associated cost. Lastly, the pinch seal fluid interconnect


40


is relatively easy and inexpensive to manufacture, and relatively simple to incorporate into components used in ink delivery systems of thermal inkjet printing systems.





FIGS. 6



a


and


6




b


illustrate an alternative embodiment pinch seal fluid interconnect


80


. Like parts are labeled with like numerals except for the addition of the subscript “A” unless otherwise noted. This alternative embodiment makes use of a pair of the pinch valve members


44


A,


44


B. One pinch valve member


44


A is mounted to the fluid supply container


12


and the other pinch valve member


44


B is mounted to the receiving station


14


. The pinch valve members are identical except that the pinch valve member


44


B is made of a softer elastomer material than the pinch valve member


44


A. This alternative pinch seal fluid interconnect


80


includes an hour glass shaped rigid tubular member


42


A. The tubular member


42


A is mounted to the receiving station


14


such that the tubular member


42


A surrounds the pinch valve member


44


B. The tubular member


42


A includes a lead-in region


64


A and an actuating region


66


A that function identical to the lead-in and actuating regions


64


,


66


of the tubular member


42


. The pinch valve member


44


B is positioned in the tubular member


42


A such that the first end


46


B of the pinch valve member


44


B is positioned within the lead-in region


64


A of the tubular member


42


A.




Upon initial engagement of the container


12


with the receiving station


14


, the lead-in region


64


A of the tubular member


42


A acts to guide the first end


46


A of the pinch valve member


44


A into the actuating region


66


A. Upon full engagement of the container


12


with the receiving station


14


, the lips


54


A at the first end


46


A of the pinch valve member


44


A bear against the lips


54


B at the first end


46


B of the pinch valve member


44


B which causes the pinch valve member


44


B to deform along its longitudinal extent (see

FIG. 6



b


) since it is of a softer elastomer material than the pinch valve member


44


A. This causes the lips


54


A,


54


B at the first ends


46


A,


46


B of both of the pinch valve members


44


A,


44


B to enter the actuating region


66


A of the tubular member


42


A which applies the oppositely directed compressive forces


60


to the exterior surfaces


47


A,


47


B of the pinch valve members


44


A,


44


B in order to deform the lips


54


A,


54


B and move the slits


56


A,


56


B from their closed states to the opened states to allow the marking fluid


58


to pass therethrough. The actuating region


66


A applies the compressive forces


60


to the lips


54


A,


54


B because the diameter of the actuating region


66


A is less than a maximum linear dimension of the lips


54


A,


54


B. As an alternative to forming the pinch valve member


44


B of a softer elastomer material than the pinch valve member


44


A, the pinch valve member could include an internal rigidifying tubular element


82


, which would provide the necessary stiffness to allow the pinch valve member


44


A to deform the pinch valve member


44


B along its longitudinal extent. Removal of the ink container


12


from the receiving station allows the pinch valve member


44


B to return to its original non-deformed state, with the lips


54


A,


54


B in a closed state.




It is to be understood that as an alternative, the pinch valve member


44


B could be formed so as to be normally in the opened state. In this version, the lips


54


B of the pinch valve member


44


B would normally be positioned within the actuating region


66


A of the tubular member


42


A so that the actuating region


66


A would hold the lips


54


B of the pinch valve member


44


B in the closed state. In this version, upon full engagement of the container


12


with the receiving station


14


, the lips


54


A at the first end


46


A of the pinch valve member


44


A would bear against the lips


54


B at the first end


46


B of the pinch valve member


44


B which would cause the pinch valve member


44


B to deform along its longitudinal extent since it is of a softer elastomer material than the pinch valve member


44


A. This causes the lips


54


A at the first end


46


A of the pinch valve member


44


A to enter the actuating region


66


A of the tubular member


42


A which deforms the lips


54


A and moves the slit


56


A from its closed state to its opened state, while the lips


54


B of the pinch valve member


44


B are moved below the actuating region


66


A which allows the lips


54


B of the pinch valve member


44


B to return to their normal state wherein the slit


56


B moves from the closed state to the normally opened state to allow the marking fluid


58


to pass therethrough.





FIGS. 7



a


and


7




b


illustrate an alternative embodiment pinch seal fluid interconnect


90


. In this embodiment, the pinch valve members


44


A and


44


B are formed of the same elastomer material and without the rigidifying tubular element


82


. In this embodiment, the second end


48


B of the pinch valve member


44


B includes a circumferential groove


92


for receiving an O-ring


94


. The second end


48


B of the pinch valve member


44


B is received within a bore


96


on the receiving station


14


. The O-ring


94


forms a fluid tight seal with the bore


96


and allows the pinch valve member


44


B to move relative to the receiving station


14


along the bore


96


. A spring member


98


acts between the receiving station


14


and the second end


48


B of the pinch valve member


44


B to bias the pinch valve member to the position shown in

FIG. 7



a


wherein the lips


54


B of the pinch valve member


44


B are in a closed state.




Upon initial engagement of the container


12


with the receiving station


14


, the lead-in region


64


A of the tubular member


42


A acts to guide the first end


46


A of the pinch valve member


44


A into the actuating region


66


A. Upon full engagement of the container


12


with the receiving station


14


, the lips


54


A at the first end


46


A of the pinch valve member


44


A bear against the lips


54


B at the first end


46


B of the pinch valve member


44


B which causes the pinch valve member


44


B to move along the bore


96


against the bias of the spring


98


(see

FIG. 7



b


). This causes the lips


54


A,


54


B of both of the pinch valve members


44


A,


44


B to enter the actuating region


66


A of the tubular member


42


A which applies the oppositely directed compressive forces


60


to the exterior surfaces


47


A,


47


B of the lips


54


A,


54


B of the pinch valve members


44


A,


44


B in order to deform the lips


54


A,


54


B and move the slits


56


A,


56


B from their closed states to the opened states to allow the marking fluid


58


to pass therethrough. The actuating region


66


A applies the compressive forces


60


to the lips


54


A,


54


B because the diameter of the actuating region


66


A is less than a maximum linear dimension of the lips


54


A,


54


B. Removal of the ink container


12


from the receiving station allows the pinch valve member


44


B to return to its starting position and the lips


54


A,


54


B to return to their closed state.




Pinch seal fluid interconnects


80


,


90


establish reliable fluid connections between the fluid supply container


12


and the receiving station


14


, and between the receiving station


14


and the printhead cartridge


16


. However, it is to be understood that the pinch seal fluid interconnect


80


,


90


of the present invention can also form a reliable fluid connection between a fluid supply container


12


and a printhead cartridge


16


. Moreover, it is to be understood that the pinch valve members


44


A,


44


B can pass fluid in either direction. In addition the pinch seal fluid interconnect


80


,


90


is capable of repeated disconnects and reconnects as the ink supply


12


and printhead


16


are removed and installed. Moreover, the pinch seal fluid interconnect


80


,


90


is robust enough to prevent leakage under normal operating and non-operating conditions and under various environmental conditions. In addition, the pinch valve members


44


A,


44


B prevent drooling of fluid when the ink supply


12


and printhead


16


are separated from the printing system. Moreover, the use of the pair of pinch valve members


44


A,


44


B minimizes air introduced and ink loss upon disconnects and reconnects of the printer components. The pinch seal fluid interconnect


80


,


90


reliably provides these above features throughout the useful life of the fluid delivery system components of the printing system


10


so as to preclude premature replacement of these components and the associated cost. Lastly, the pinch seal fluid interconnect


80


,


90


is relatively easy and inexpensive to manufacture, and relatively simple to incorporate into components used in ink delivery systems of thermal inkjet printing systems.




Although the present invention has been described with reference to preferred embodiments, workers skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention.



Claims
  • 1. A marking fluid valve for a marking fluid delivery system of a media marking device, the marking fluid valve comprising:a resilient body having first and second opposite ends in fluid communication with one another; a pair of opposed lips at the first end of the resilient body, the pair of opposed lips defining a normally closed slit extending therebetween, the slit defining an axis, wherein compressing the first end of the resilient body along the axis of the lips deforms the resilient body from a closed position, in which the lips are in contact with one another to close the slit and prevent marking fluid from passing through the slit, to an open position, in which the lips are spread at least partially apart from one another to enable marking fluid to pass through the slit.
  • 2. The marking fluid valve of claim 1 wherein the resilient body defines a marking fluid outlet in which in the open position of the lips, the marking fluid passes through the resilient body from the second end through the open slit at the first end.
  • 3. The marking fluid valve of claim 1 wherein the resilient body defines a marking fluid inlet in which in the open position of the lips, the marking fluid passes into the open slit at the first end of the resilient body and through the resilient body to the second end thereof.
  • 4. The marking fluid valve of claim 1 wherein the resilient body is formed of an elastomer material.
  • 5. The marking fluid valve of claim 1 wherein the second end of the resilient body defines a mounting flange by which the resilient body is mounted to a component of the marking fluid delivery system of the media marking device.
  • 6. The marking fluid valve of claim 1 wherein the second end of the resilient body defines a circumferential groove for receiving an O-ring engageable with a component of the marking fluid delivery system of the media marking device.
  • 7. The marking fluid valve of claim 6 wherein the first end of the cone shaped resilient body is of a first dimension, wherein the second end of the cone shaped resilient body is of a second dimension, and wherein the second dimension is greater than the first dimension.
  • 8. The marking fluid valve of claim 1 wherein between the first and second ends the resilient body is generally cone shaped.
  • 9. The marking fluid valve of claim 1 wherein a compressive force is applied to an exterior of the first end of the resilient body to compress the first end of the resilient body along axes of the lips to deform the resilient body from the closed position to an open position.
  • 10. The marking fluid valve of claim 9 wherein the compressive force is a pair of opposite compressive forces applied to the exterior of the first end of the resilient body in a direction parallel to the axes of the lips to compress the first end of the resilient body along axes of the lips to deform the resilient body from the closed position to an open position.
  • 11. A fluid valve interconnect for a fluid delivery system of a printing device, the fluid valve interconnect comprising:a resilient body having first and second opposite ends in fluid communication with one another, an exterior surface and an interior surface; a pair of opposed lips at the first end of the resilient body, the pair of opposed lips defining a normally closed slit extending therebetween, wherein application of a force to the exterior of the resilient body moves the lips of the resilient body from a closed state in which the lips are in contact with one another to close the slit and prevent fluid from passing through the slit, to an open state in which the lips are separated at least partially apart from one another to enable fluid to pass through the slit.
  • 12. The fluid valve of claim 11 wherein the force applied to the exterior of the resilient body is a compressive force.
  • 13. The fluid valve of claim 12 wherein the compressive force is applied to the lips at the first end of the resilient body.
  • 14. The fluid valve of claim 13 wherein the compressive force is applied to the lips in a directional generally parallel to a longitudinal extent of the slit.
  • 15. The fluid valve of claim 14 wherein the compressive force is defined by a pair of opposed compressive forces applied to the lips at opposite ends of the of the slit.
  • 16. A fluid delivery system for a printing system, the fluid delivery system comprising:a first component including: a substantially rigid tubular member; a second component engageable with the first component, the second component including: a resilient body having a first end with a pair of opposed lips defining a normally closed slit extending therebetween, wherein engagement of the second component with the first component causes the resilient body to be received by the rigid tubular member, the tubular member applying a force to an exterior of the resilient body which deforms the lips of the resilient body from a closed state, in which the lips are in contact with one another to close the slit and prevent fluid from passing through the slit, to an open state, in which the lips are separated at least partially apart from one another to enable fluid to pass through the slit.
  • 17. The fluid delivery system of claim 16 wherein the resilient body further includes an opposite second end in fluid communication with the first end, the second end defining a flange portion adapted for mounting the resilient body to the second component.
  • 18. The fluid delivery system of claim 16 wherein interior wall portions of the tubular member define a lead-in region and an actuating region, the lead-in region acting to guide the resilient body into the actuating region which acts to apply the force to the exterior of the resilient body which deforms the lips of the resilient body from the closed state to the open state.
  • 19. The fluid delivery system of claim 18 wherein the interior wall portion defining the lead-in region has a first pitch, wherein the interior wall portion defining the actuating region has a second pitch, and wherein the second pitch is greater than the first pitch.
  • 20. The fluid delivery system of claim 18 wherein the first component further includes:a resilient body positioned within the tubular member, the resilient body of the first component having a first end with a pair of opposed lips defining a normally closed slit extending therebetween, and an opposite second end in fluid communication with the first end, wherein engagement of the second component with the first component causes the resilient body of the second component to be received by the rigid tubular member, the tubular member applying a force to exteriors of the resilient bodies of the first and second components which deforms the lips of the resilient bodies from a closed state in which the lips are in contact with one another to close the slit and prevent fluid from passing through the slit, to an open state in which the lips are separated at least partially apart from one another to enable fluid to pass through the slits.
  • 21. The fluid delivery system of claim 20 wherein in the closed state of the lips of the resilient body of the first component, the lips are positioned within the lead-in region of the tubular member.
  • 22. The fluid delivery system of claim 21 wherein engagement of the second component with the first component causes the lips of the resilient bodies of the first and second components to be received by the actuating portion of the rigid tubular member which acts to apply the force to the exteriors of the resilient bodies which deforms the lips of the resilient bodies from the closed state to the open state.
  • 23. The fluid delivery system of claim 22 wherein when the lips of the resilient body of the first component are received by the actuating portion of the rigid tubular member, the resilient body is deformed between its first and second ends.
  • 24. The fluid delivery system of claim 22 wherein the resilient body of the first component is movably mounted to the first component so as to move from a first position wherein the lips are in the closed state, and a second position in which the lips are in the open state, and wherein engagement of the second component with the first component moves the resilient body of the first component relative to the first component from the first position to the second position.
  • 25. The fluid delivery system of claim 24 wherein the resilient body is spring biased to be normally in the first position.
  • 26. The fluid delivery system of claim 16 wherein the first end of the resilient body has a perimeter and a maximum dimension between opposed points on the perimeter, and wherein the tubular member defines an interior wall portion having a diameter that is less than the maximum dimension, such that insertion of the resilient body into this interior wall portion deforms the lips at the first end of the resilient body from the closed state to the open state.
  • 27. The fluid delivery system of claim 16 wherein the second component is a fluid supply container.
  • 28. The fluid delivery system of claim 27 wherein the first component is a printing system manifold adapted to removably receive the fluid supply container.
  • 29. The fluid delivery system of claim 27 wherein the first component is a printhead adapted to removably receive the fluid supply container.
  • 30. The fluid delivery system of claim 16 wherein the second component is a printing system manifold.
  • 31. The fluid delivery system of claim 30 wherein the first component is a fluid supply container adapted to be removably received by the printing system manifold.
  • 32. The fluid delivery system of claim 30 wherein the first component is a printhead adapted to be removably received by the printing system manifold.
  • 33. The fluid delivery system of claim 16 wherein the first component is a fluid supply container.
  • 34. The fluid delivery system of claim 16 wherein the second component is a printhead, and the first component is a fluid supply container adapted to be removably received by the printhead.
  • 35. The fluid delivery system of claim 16 wherein the second component is a printhead, and the first component is a printing system manifold adapted to removably receive the printhead.
US Referenced Citations (9)
Number Name Date Kind
5699091 Bullock et al. Dec 1997 A
5721576 Barinaga Feb 1998 A
6017118 Gasvoda et al. Jan 2000 A
6039441 Tomikawa et al. Mar 2000 A
6072509 Wen et al. Jun 2000 A
6078340 Jeanmaire et al. Jun 2000 A
6091433 Wen Jul 2000 A
6130695 Childers et al. Oct 2000 A
6137501 Wen et al. Oct 2000 A