CN100542819C - Print cartridge and ink-jet printer - Google Patents
Print cartridge and ink-jet printer Download PDFInfo
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- CN100542819C CN100542819C CNB2007100919425A CN200710091942A CN100542819C CN 100542819 C CN100542819 C CN 100542819C CN B2007100919425 A CNB2007100919425 A CN B2007100919425A CN 200710091942 A CN200710091942 A CN 200710091942A CN 100542819 C CN100542819 C CN 100542819C
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Abstract
A kind of print cartridge is provided.This print cartridge comprises ink chamber, wall, ink guide part, a plurality of protuberance.Ink chamber constitutes and is used for storing ink.Wall has first end and the second end opposite with first end.Ink guide part is arranged on the wall place near the second end of wall, and stretches out with respect to the adjacent area of wall.Ink guide part has end and the ink supply opening that is formed in this end.Ink guide part constitutes by the ink supply opening and from ink chamber inside ink is offered the print cartridge outside.A plurality of protuberances stretch out from wall.Each protuberance in described a plurality of protuberance has the end.Between the end of each protuberance in described a plurality of protuberances and the wall first distance is greater than at the end of ink guide part and the second distance between the wall.Distance of separation between two protuberances of the next-door neighbour of described a plurality of protuberances is not more than from the diameter of the ink droplet of the end drippage of ink guide part.
Description
Technical field
The present invention relates generally to print cartridge and ink-jet printer.
Background technology
Known ink-jet recording system comprises ink jet recording device and is installed in a plurality of print cartridges on the mounting portion of ink jet recording device side by side.This ink-jet recording system has for example been described in JP2005-238815.A surface at print cartridge is formed with the ink supply opening.When print cartridge being installed on the ink jet recording device and will the ink in print cartridge offer ink jet recording device, being located at ink supply pin in the ink jet recording device and inserting and pass the ink supply opening.Print cartridge comprises shell and is located at the interior China ink bag of shell.The China ink bag has the port that is used for the ink in the China ink bag is provided to the print cartridge outside, and this port is aimed at the ink supply opening.In port, be provided with lid, valve and spring.Spring so pushes valve, thereby valve is contacting lid.When valve is contacting lid, stop between China ink bag inside and print cartridge outside to be communicated with.Overcome the pushing force of spring at the ink supply pin and promote valve and valve when separating, set up connection with lid.
In case by the ink supply opening ink supply pin is inserted in the print cartridge, then ink is attached on the ink supply pin.With print cartridge when take out the mounting portion, attached to the ink on the ink supply pin attached near the ink supply opening.Ink can drop onto on the mounting portion from the ink supply opening.If ink drops onto on the mounting portion from the ink supply opening, then made dirty in the mounting portion.In addition, ink may drop onto on the mounting portion from the ink supply pin.In case the mounting portion is dirty, then new print cartridge is being installed on the mounting portion, new print cartridge also can be made dirty.When new print cartridge was taken out from the mounting portion, user's hand also can be made dirty.This is a problem.Especially, when when being stoped the connection between print cartridge inside and print cartridge outside by spring-biased valve, this problem becomes worse.When the ink supply pin left the ink supply opening, spring was back pushed valve to the ink supply opening.Therefore, ink is pushed to the ink supply opening by valve.Thereby a large amount of inks can be released the ink supply opening.
Another kind of known print cartridge comprises an ink guide part that stretch out on the surface from print cartridge.The ink supply opening is formed on the place, end of ink guide part.Ink also can drop onto on the mounting portion of ink jet recording device from the ink supply opening of this print cartridge.
Summary of the invention
The invention provides and suppress the print cartridge of ink from the print cartridge drippage.
According to embodiment of the present invention, print cartridge comprises ink chamber, wall, ink guide part, a plurality of protuberance.Ink chamber constitutes and is used for storing ink.Wall has first end and the second end opposite with first end.Ink guide part is arranged on the wall place near the second end of wall, and stretches out with respect to the adjacent area adjacent with ink guide part of wall.Ink guide part has end and the ink supply opening that is formed in this end.Ink guide part constitutes by the ink supply opening and from ink chamber inside ink is offered the print cartridge outside.A plurality of protuberances stretch out from wall.Each protuberance of described a plurality of protuberances has the end.In the end of each protuberance of a plurality of protuberances and first distance between the wall greater than at the end of ink guide part and the second distance between the wall.Distance of separation between two protuberances of the next-door neighbour of a plurality of protuberances is not more than from the diameter of the ink droplet of the end drippage of ink guide part.
If ink droplet is from the end drippage of ink guide part when print cartridge is taken out from the mounting portion of ink jet recording device, then Jin Lin two protuberances can catch ink droplet and be kept between them by capillary force.Therefore, can prevent that the mounting portion from being made dirty by ink.And, even with print cartridge after take out the mounting portion, two protuberances of next-door neighbour can be caught and preserve the ink from ink supply opening drippage.Therefore, made dirty by ink in the peripheral region that can prevent ink-jet printer.
According to another embodiment of the invention, print cartridge comprises ink chamber, wall, ink guide part, first protuberance and second protuberance.Ink chamber constitutes and is used for storing ink.Wall has first end and the second end opposite with first end.Ink guide part is arranged on the wall place near the second end of wall, and stretches out with respect to the adjacent area adjacent with ink guide part of wall.Ink guide part has end and the ink supply opening that is formed in this end.Ink guide part constitutes by the ink supply opening and from ink chamber inside ink is offered the print cartridge outside.First protuberance stretches out from wall and second protuberance stretches out from wall.Each protuberance in first protuberance and second protuberance has the end.Between the end of each protuberance in first protuberance and second protuberance and the wall first distance is greater than at the end of ink guide part and the second distance between the wall.Distance of separation between first protuberance and second protuberance is less than the maximum gauge of ink supply opening.
If ink droplet is from the end drippage of ink guide part when print cartridge is taken out from the mounting portion of ink jet recording device, then first protuberance and second protuberance can catch ink droplet and be kept between them by capillary force.Therefore, can prevent that the mounting portion from being made dirty by ink.And, even with print cartridge after take out the mounting portion, first protuberance and second protuberance also can be caught and preserve the ink from ink supply opening drippage.Therefore, made dirty by ink in the peripheral region that can prevent ink-jet printer.
Description of drawings
For a more complete understanding of the present invention and purpose, feature and advantage, meet the demands thus, below with reference to the following explanation that provides in conjunction with the accompanying drawings.
Fig. 1 be according to one embodiment of the present invention ink-jet printer and the schematic diagram of print cartridge.
Fig. 2 is the fragmentary, perspective view of print cartridge.
Fig. 3 (a) for finish be installed in print cartridge on the ink-jet printer before the partial sectional view of print cartridge and ink-jet printer.
Fig. 3 (b) for finish print cartridge is installed on the ink-jet printer after the partial sectional view of print cartridge and ink-jet printer.
Fig. 4 (a) be ink attached to ink guide part on the time print cartridge schematic diagram.
Fig. 4 (b) is the schematic diagram of print cartridge when ink drips.
Fig. 4 (c) is the schematic diagram of print cartridge when ink is trapped between two protuberances.
Fig. 5 is the fragmentary, perspective view of print cartridge according to another embodiment of the invention.
Fig. 6 is the fragmentary, perspective view according to the print cartridge of a still further embodiment of the present invention.
Fig. 7 is the fragmentary, perspective view of the print cartridge of another embodiment according to the present invention.
Fig. 8 is the fragmentary, perspective view of the print cartridge of another embodiment according to the present invention.
The partial sectional view of Fig. 9 (a) for cutting open along the IXA-IXA line in Fig. 8.
The partial sectional view of Fig. 9 (b) for cutting open along the IXA-IXA line among Fig. 8 when ink guide part drips at ink droplet.
Figure 10 is the fragmentary, perspective view of the print cartridge of another embodiment according to the present invention.
Figure 11 is the fragmentary, perspective view according to the print cartridge of a still further embodiment of the present invention.
Figure 12 is the side view of the print cartridge of another embodiment according to the present invention.
The specific embodiment
By understanding embodiment of the present invention and feature and advantage thereof with reference to figure 1-12, identical label is used to represent identical appropriate section in each accompanying drawing.
With reference to Fig. 1, ink-jet printer 1 comprises ink gun 2, mounting portion 16, flexible pipe 15, balladeur train 5, paper advance mechanism 6 and cleaning device 7.Ink gun 2 comprises a plurality of nozzle 2a that are used for towards recording paper P injection ink that constitute.Mounting portion 16 constitutes and is used for installing print cartridge 20.Ink gun 2 and the print cartridge 20 that is installed in the mounting portion 16 are interconnected by managing 15.Balladeur train 5 constitutes with ink gun 2 and moves back and forth.Paper advance mechanism 6 constitutes and is used for supplying with recording paper P.Cleaning device 7 constitutes and is used for deflating from ink gun 2 inside or the ink of retrogradation.
During printing, ink gun 2 moves back and forth along the direction vertical with the plane of Fig. 1 with balladeur train 5, and recording paper P is supplied with along the horizontal direction in Fig. 1 by paper advance mechanism 6.Ink gun 2 is facing to recording paper P.By control device, make the supply of the reciprocating motion of ink gun 2 and recording paper P synchronous.Each ink gun 2 is crossed recording paper P, and ink gun 2 sprays ink from nozzle 2a.Ink offers ink gun 2 by managing 15 print cartridges 20 from be installed in mounting portion 16.Nozzle 2a is arranged to be higher than mounting portion 16 and print cartridge 20, to prevent that ink leaks out when not printing from nozzle 2a.
Cleaning device 7 comprises block 10 and pump 11.Block 10 constitutes towards moving with the ink discharging surface of leaving ink gun 2.Nozzle 2a is arranged on the ink discharging surface place.Block 10 constitutes and is covered with ink discharging surface.Pump 11 constitutes from nozzle 2a the ink sucking-off.When ink gun 2 was positioned at outside the printable area, block 10 can be covered with ink discharging surface, and pump 11 can the sucking-off from nozzle with air or retrogradation ink.Printable area is that ink gun 2 can be towards the zone of recording paper P ink-jet.Moisture evaporation from ink can cause the ink retrogradation in nozzle 2.This cleaning operation can recover the inkjet performance of ink gun 2.
Open to the right in Fig. 1 mounting portion 16.Print cartridge 20 can insert and level is installed to the inside 16a of mounting portion 16 from opening.Can pull out towards the right in Fig. 1 by the right, print cartridge 20 is removed from mounting portion 16 print cartridge 20.
With reference to Fig. 2,3 (a) and 3 (b), print cartridge 20 has rectangular shape.Ink chamber 21 is located in the print cartridge 20.Print cartridge 20 comprises sidewall 20a and the cylindrical ink part 22 of stretching out from sidewall 20a.When being installed in print cartridge 20 in the mounting portion 16, sidewall 20a is facing to the end wall 16b of mounting portion 16, and ink guide part 22 stretches out towards end wall 16b.The direction that ink guide part 22 stretches out is parallel with the direction that print cartridge 20 is installed in the mounting portion 16.Ink guide part 22 has the ink-feed channel 23 that therefrom runs through formation.Ink-feed channel 23 is communicated with ink chamber 21 and print cartridge 20 outsides.Ink can offer print cartridge 20 outsides from ink chamber 21 by ink-feed channel 23.Ink-feed channel 23 is extended along the direction parallel with print cartridge 20 being installed to direction in the mounting portion 16.Ink guide part 22 comprises the end face 22a farthest from sidewall 20a.Central authorities at end face 22a are formed with ink supply opening 24.Ink supply opening 24 is circular.Therefore, end face 22a is the annular surface around ink supply opening 24.Ink-feed channel 23 is led to print cartridge 20 outsides at ink supply opening 24 places.Provide the direction of ink with direction that print cartridge 20 be installed to mounting portion 16 parallel from ink chamber 21 to print cartridge 20 outsides by ink-feed channel 23, and vertical with end face 22a.Therefore, ink supply opening 24 is formed on and provides the vertical plane of the direction of ink to print cartridge 20 outsides from ink chamber 21 by ink-feed channel 23.
In ink-feed channel 23, be provided with pipe shape seal 25.Ink-feed channel 23 has the middle body between ink chamber 21 and ink supply opening 24.Seal 25 is arranged between ink supply opening 24 and the ink-feed channel middle body.Seal 25 by elastomeric material for example rubber form.The ink supply pipe 17 that is located in the mounting portion 16 enters seal 25 when being installed to print cartridge 20 in the mounting portion 16.Seal 25 elasticity are pressed against on the outer surface of ink supply pipe 17, thereby have prevented that ink from leaking out between the outer surface of ink supply pipe 17 and seal 25.Ink-feed channel 23 comprises wider portion 26.Wider portion 26 has the radius wideer than ink supply opening 24.Wider portion 26 extends to the substantial middle part of ink-feed channel 23 from ink chamber 21.In wider portion 26, be provided with helical spring 27 and valve 28.Helical spring 27 is arranged between valve 28 and the ink chamber 21, and along the direction that print cartridge 20 is installed in the mounting portion 16 valve 28 is pushed towards print cartridge 20 outsides.Wider portion 26 is connected with remaining ink-feed channel 23 at surperficial 29 places of connection.The radius of valve 28 is greater than the radius of remaining ink-feed channel 23, but less than the radius of wider portion 26.Valve 28 presses against and connects on the surface 29, thereby has prevented that ink from leaking to print cartridge 20 outsides from ink chamber 21.Overcome the active force of helical spring 27 and when promoting valve 28 and valve 28 and being connected surface 29 and separating, ink flows to ink supply pipe 17 at ink supply pipe 17.
With reference to Fig. 3 (a) and 3 (b), ink supply pipe 17 is arranged in the mounting portion 16.When being installed to print cartridge 20 in the mounting portion 16, ink supply pipe 17 is inserted in the ink-feed channel 23 by ink supply opening 24.The end face 17a of ink supply pipe 17 is than the opening of the more close mounting portion 16 of end wall 16b.Outer surface 16c place at end face 16b is provided with cylindrical coupling part 14.An end of pipe 15 is connected with coupling part 14.Intercommunicating pore 16d forms and passes end wall 16b.Form the intercommunicating pore 17b that passes ink supply pipe 17 and form the intercommunicating pore 14a that passes coupling part 14 and be communicated with by intercommunicating pore 16d.Ink can and be managed 15 by intercommunicating pore 17b, intercommunicating pore 16d, intercommunicating pore 14a and be offered ink gun 2 from ink chamber 21.
In end wall 16b, be formed with circular recess 18.Ink supply pipe 17 stretches out from the bottom of circular recess 18.Circular recess 18 constitutes and be used for receiving ink guide part 22 when being installed to print cartridge 20 in the mounting portion 16.The distance that the degree of depth of circular recess and ink guide part 22 stretch out from sidewall 20a is identical or can be darker.A part of end face 17a is cut away.
In end wall 16b, be formed with two recessed 19.Recessed 19 constitute receive first protuberance 31 and second protuberance 32 respectively when being installed to print cartridge 20 in the mounting portion 16.Because Fig. 3 (a) and 3 (b) are cutaway view, thus just demonstrate one of them recessed 19.Yet, in end wall 16b, in the zone corresponding, be formed with two recessed 19 respectively with first protuberance 31 and second protuberance 32.Recessed 19 shape of cross sections of cutting open along the plane vertical with print cartridge 20 being installed to direction in the mounting portion 16 all are identical in any position of recessed 19.The shape of cross section of recessed 19 shape of cross section and first protuberance 31 and second protuberance 32 is similar, and has the identical or big slightly size of shape of cross section with first protuberance 31 and second protuberance 32.Receiving recessed 19 of first protuberance 31 and second protuberance 32 accurately is arranged on print cartridge 20 in the mounting portion 16.Can use a plurality of print cartridges 20.For example, can use four print cartridges 20, they can be equipped with the ink of different colours respectively, for example cyan, magenta, yellow and black ink, and can use four mounting portions 16, they receive four print cartridges 20 respectively.The protuberance 30 of four print cartridges can have different shape of cross sections respectively, and constitutes respectively and be used for receiving recessed 19 of protuberance 30 and can have the different shape of cross section corresponding with the shape of cross section of protuberance 30 respectively.This can prevent from print cartridge 20 is inserted in the wrong mounting portion 16.For example, can prevent that the print cartridge 20 that will yellow ink be housed is inserted into constitutes in the mounting portion 16 that is used for holding the print cartridge 20 that black ink is housed.
Be provided with switch 13 at each place, recessed 19 bottom.Switch 13 comprises movable link and spring.Movable link is pushed by spring, thereby stretches out from recessed 19 bottom.When being inserted into print cartridge 20 in the mounting portion 16, the pushing force that each of end face 31a and end face 32a overcomes spring promotes movable link.When promoting movable link, send signal to control device.Control device is determined the installation of print cartridge 20 according to signal.Therefore, can prevent do not have to print operation under the complete mounted situation at print cartridge 20.If do not have to print operation under the complete mounted situation at print cartridge 20, then air can enter into ink gun inside, thereby leads to errors printing.First protuberance 31 and second protuberance 32 not only are used for preserving the device of ink, but also with the device that acts on the installation of informing print cartridge 20.This dual-use function helps to reduce the part of print cartridge 20.Can only be provided with a switch 13 at any place, recessed 19 bottom.
From when the state shown in Fig. 3 (a) is installed to print cartridge 20 at the state shown in Fig. 3 (b), the pushing force that the end face 17a of ink supply pipe 17 overcomes helical spring 27 promotes valve 28.Because the outer surface of ink supply pipe 17 is always contacting seal 25 during this fitting operation, so the ink in ink chamber 21 and wider portion 26 can not leak into the outside by seal 25, but flows among the intercommunicating pore 17b by the otch that is formed among the end face 17a.Therefore, when being installed in print cartridge 20 on the mounting portion 16, ink can leak hardly.
Yet from the mounting portion 16 when print cartridge 20 taken out, ink can leak.When ink supply pipe 17 left ink-feed channel 23, valve 28 was pushed back with contact and connects surface 29.The valve 28 that is pushed back can be pushed ink to ink supply opening 24 from wider portion 26, and this ink can be from ink supply opening 24 drippages.In addition, when ink supply pipe 17 leaves ink-feed channel 23, can be attached to the ink on the outer surface of ink supply pipe 17 attached near the ink supply opening 24, and this ink can be from ink supply opening 24 drippages.To 4 (c), demonstrate ink and ink droplet at Fig. 4 (a) with hacures.With reference to Fig. 4 (a), can remain on the end face 22a by surface tension attached to the ink on the end face 22a.Yet with reference to Fig. 4 (b), when quantity of ink was too many, ink dripped with ink droplets.In addition, can drip when ink supply pipe 17 leaves ink supply opening 24 attached to the ink on the outer surface of ink supply pipe 17.
Surface tension is applied on the outer circumferential edges that is diffused into end face 22a and remains on the ink on the end face 22a.Become when equaling surface tension in the drop weight that will drip from the ink on being arranged in end face 22a, ink droplet leaves the ink that is positioned on the end face 22a, and for example falls with spherical form.Represent by following equation in the relation that is applied between the surface tension of the excircle length of the capillary summation on the end face 22a, end face 22a and ink:
F0＝S0×γ
Wherein
F0=is applied to the surface tension summation on the ink that is positioned on the end face
The excircle length of S0=end face 22a
The surface tension of γ=ink
For example, the outer diameter D 0 of end face 22a is 5mm, and therefore excircle length S0 is approximately 15.7mm, and the surface tension of ink is 35mN/m.Therefore, capillary summation F0 is approximately 55mg-weight and (is approximately 5.5 * 10
-4N).Become when equaling capillary summation F0 in the drop weight that will drip from the ink on being arranged in end face 22a, ink droplet leaves and is positioned at the ink on the end face 22a and falls.According to following equation, calculate the diameter Dd of spherical ink droplet:
Dd＝2((F0×3)/(ρ×π×4))
1/3
Wherein
ρ=ink density
For example, density p is 1.05g/cm
3Be approximately 55mg-weight and density p is 1.05g/cm at capillary summation F0
3The time, the diameter Dd of ink droplet is approximately 4.6mm.Ink droplet with this diameter Dd drips from end face 22a as shown in Fig. 4 (b).
If ink droplet is spherical, then be not more than the diameter Dd of ink droplet as the distance of separation Dc of the minimum range between dividing in the outer circumference portion of the excircle part of first protuberance 31 and second protuberance 32.That is to say, satisfy following relation:
Dc≤2((F0×3)/(ρ×π×4))
1/3
For example, distance of separation Dc is approximately 4.5mm.In addition, distance of separation Dc is less than the maximum gauge of ink supply opening 24.If distance of separation Dc is not more than 5mm, then between first protuberance 31 and second protuberance 32, produce capillary force.
With reference to Fig. 4 (c), ink droplet drops into the central authorities between first protuberance 31 and second protuberance 32.Because distance of separation Dc is not more than the diameter Dd of ink droplet, so ink droplet is contacting the excircle part of first protuberance 31 and the excircle part of second protuberance 32, and first protuberance 31 and second protuberance 32 remain on ink between them by capillary force.
Ink droplet can not have spherical form.Yet,,, and can when ink droplet is taked any form, remain between first protuberance 31 and second protuberance 32 so ink droplet can be received by first protuberance 31 and second protuberance 32 because distance of separation Dc is less than the maximum gauge of ink supply opening 24.
As mentioned above, when print cartridge 20 is taken out from mounting portion 16, first protuberance 31 and second protuberance 32 can receive the ink that drips from ink supply opening 24/ end face 22a, and ink can remain between first protuberance 31 and second protuberance 32 by capillary force.Therefore, can prevent that mounting portion 16 from being made dirty by ink.And, when after print cartridge 20 is taken out from mounting portion 16, when thereby print cartridge 20 is in such attitude first protuberance 31 and second protuberance 32 and is arranged on below the ink guide part 22, first protuberance 31 and second protuberance 32 can be caught and keep the ink from ink supply opening 24/ end face 22a drippage.Therefore, made dirty by ink in the peripheral region that can prevent ink-jet printer 1.
Because first protuberance 31 and second protuberance 32 stretch out from the sidewall 20a that ink guide part 22 also therefrom stretches out, so first protuberance 31 and second protuberance 32 can receive ink reliably, and can simplify the structure of print cartridge 20.Because first protuberance 31 and second protuberance 32 are arranged on ink guide part 22 belows, so first protuberance 31 and second protuberance 32 can receive ink reliably.
Owing to satisfied following relation:
Dc≤2((S0×γ×3)/(ρ×π×4))
1/3
So suppose ink droplet globulate form, then first protuberance 31 and second protuberance 32 can receive ink reliably.Because it is vertical with second line segment at the center of center that is being connected first line segment and ink supply opening 24 to connect first line segment of axial centre of the axial centre of first protuberance 31 and second protuberance 32, so ink droplet can contact the excircle part of first protuberance 31 and the excircle part of second protuberance 32, and first protuberance 31 and second protuberance 32 can remain on ink between them reliably.
With reference to Fig. 5, replace cylindrical first protuberance 31 and second protuberance 32, print cartridge 220 according to another embodiment of the invention comprises rectangle column first protuberance 231 and second protuberance 232 that stretches out from sidewall 20a.First protuberance 231 and second protuberance 232 are aimed at along width, and are separated from each other.First protuberance 231 comprises towards the inner surface of second protuberance 232, and second protuberance 232 comprises towards the inner surface of first protuberance 231.The inner surface of first protuberance 231 is parallel with the inner surface of second protuberance 232.Distance of separation Dc1 as the distance between the inner surface of the inner surface of first protuberance 231 and second protuberance 232 is approximately 4.5mm.Distance of separation Dc1 is less than the maximum gauge of ink supply opening 24.First protuberance 231 and second protuberance 232 are arranged between the second end of ink guide part 22 and sidewall 20a.Each of first protuberance 231 and second protuberance 232 is stretched out to such an extent that stretch out farther than ink guide part 22 from sidewall 20a from sidewall 20a.First protuberance 231 comprises the end face 231a farthest from sidewall 20a.Second protuberance 232 comprises the end face 232a farthest from sidewall 20a.In the distance between end face 231a and the sidewall 20a greater than the distance between end face 22a and sidewall 20a.In the distance between end face 232a and the sidewall 20a greater than the distance between end face 22a and sidewall 20a.First line segment at center that is connecting the center of end face 231a and end face 232a is vertical with second line segment at the center of center that is being connected first line segment and end face 22a.First line segment equates with the line segment of the axial centre of the axial centre that is being connected first protuberance 231 and second protuberance 232.Second line segment equals to connect the line segment at the center of the center of first line segment and ink supply opening 24.When short transverse is seen, each of first protuberance 231 and second protuberance 232 and the excircle part 22b of ink guide part 20 are overlapping, and the center of end face 22a is arranged between first protuberance 231 and second protuberance 232.When being installed to print cartridge 20 in the mounting portion 16, each of first protuberance 231 and second protuberance 232 is overlapping with the excircle part 22a of ink guide part 20 in plane, and the center of end face 22a is arranged in plane between first protuberance 231 and second protuberance 232.First protuberance 231 and second protuberance 232 can receive the ink droplet that has dripped from ink supply opening 24/ end face 22a, and ink can remain between first protuberance 231 and second protuberance 232 by capillary force.
With reference to Fig. 6, comprise and first protuberance 31 and identical cylindrical first protuberance 331 and second protuberance 332 and cylindrical the 3rd protuberance 333 of second protuberance 32 according to the print cartridge 320 of a still further embodiment of the present invention.The 3rd protuberance 333 is identical with second protuberance 332 with first protuberance 331 aspect shape and size.First protuberance 331, second protuberance 332 and the 3rd protuberance 333 are arranged between the second end and ink guide part 22 of sidewall 20a.First protuberance 331 and second protuberance 332 are arranged between the 3rd protuberance 333 and the ink guide part 22.First protuberance 331 comprises the end face 331a farthest from sidewall 20a.Second protuberance 332 comprises the end face 332a farthest from sidewall 20a.The 3rd protuberance 333 comprises the end face 333a farthest from sidewall 20a.First line segment at center that is connecting the center of end face 331a and end face 332a is vertical with second line segment at the center of center that is being connected first line segment and end face 333a.First line segment equates with the line segment of the axial centre of the axial centre that is being connected first protuberance 331 and second protuberance 332.Second line segment equates with the line segment of the axial centre of center that is being connected first line segment and the 3rd protuberance 333.Distance of separation Dc2 is the minimum range between the outer circumference portion of the excircle part of first protuberance 331 and the 3rd protuberance 333 is divided, and also be the minimum range between the outer circumference portion of the excircle of second protuberance 332 part and the 3rd protuberance 333 is divided, distance of separation Dc2 is approximately 4.5mm.This distance of separation Dc2 is less than the maximum gauge of ink supply opening 24.Distance of separation Dc and Dc2 are identical between first protuberance 331, second protuberance 332 and the 3rd protuberance 333.First protuberance 331, second protuberance 332 and the 3rd protuberance 333 can receive the ink droplet that has dripped from ink supply opening 24/ end face 22a, and ink can remain between first protuberance 331, second protuberance 332 and the 3rd protuberance 333 by capillary force.Because the 3rd protuberance 33, can preserve more ink so compare with above-mentioned embodiment.
With reference to Fig. 7, the print cartridge 420 of another embodiment comprises eight protuberances 431 to 438 that stretch out from sidewall 20a according to the present invention.Eight protuberances 431 to 438 are identical with second protuberance 32 with first protuberance 31 aspect shape and size.Four protuberances 431 to 434 are aimed at along width, and four protuberances 435 to 438 are aimed at along width.Eight protuberances 431 to 438 are arranged between the second end and ink guide part 22 of sidewall 20a.Four protuberances 431 to 434 are arranged between four protuberances 435 to 438 and the ink guide part 22.Distance of separation Dc3 as the minimum range between dividing along the outer circumference portion of width and short transverse next-door neighbour's protuberance is approximately 4.5mm.Distance of separation Dc3 is less than the maximum gauge of ink supply opening 24.Identical in the position between protuberance 432 and protuberance 433 and the ink supply opening 22 relation with relation between first protuberance 31 and second protuberance 32 and ink guide part 22.Eight protuberances 431 to 438 can receive the ink that has dripped from ink supply opening 24/ end face 22a, and ink can remain between eight protuberances 431 to 438 of next-door neighbour by capillary force.Because protuberance more, can preserve more ink so compare with above-mentioned embodiment.And when short transverse is seen, the excircle part 22b of some protuberances and ink guide part 20 is overlapping, but other protuberance is arranged on the both sides of ink guide part 22.Therefore, even when print cartridge 420 tilts after print cartridge 420 is taken out from mounting portion 16, eight protuberances 431 to 438 can receive the ink that has dripped from ink supply opening 24/ end face 22a, and ink can remain between eight protuberances 431 to 438 of next-door neighbour by capillary force.
With reference to Fig. 8,9 (a) and 9 (b), the print cartridge 520 of another embodiment comprises the ink guide part 522 that is positioned at sidewall 20a place according to the present invention.The end face 522a of ink guide part 522 flushes with sidewall 20a.In end face 522a, be formed with ink supply opening 524.In sidewall 20a, be formed with ring-shaped groove 510 around ink supply opening 524.Ink guide part 522 stretches out with respect to the adjacent area of sidewall 20a.That is to say that adjacent area is corresponding to ring-shaped groove 510.First line segment at center that is connecting the center of end face 31a and end face 32a is vertical with second line segment at the center of center that is being connected first line segment and end face 522a.First line segment equals to connect the line segment of the axial centre of the axial centre of first protuberance 31 and second protuberance 32.Second line segment equals to connect the line segment at the center of the center of first line segment and ink supply opening 524.End face 522a is identical with ink supply opening 24 with end face 22a respectively at vpg connection with ink supply opening 524.With reference to Fig. 9 (b), the ink droplet from end face 522a drippage can not contact sidewall 20a, thereby keeps spherical form and fall between first protuberance 31 and second protuberance 32.First protuberance 31 and second protuberance 32 can receive the ink droplet that has dripped from ink supply opening 524/ end face 522a, and ink can remain between first protuberance 31 and second protuberance 32 by capillary force.
With reference to Figure 10, the print cartridge 720 of another embodiment comprises first protuberance 731 and second protuberance 732 that stretches out from sidewall 20a according to the present invention.Spend by making first protuberance 31 and second protuberance 32 rotate 180, thereby obtained first protuberance 731 and second protuberance 732 round the center of ink guide part 22.That is to say that first protuberance 731 and second protuberance 732 are identical with first protuberance 31 and second protuberance 32 aspect size and dimension, and first protuberance 731 and second protuberance 732 are arranged between the first end and ink guide part 22 of sidewall 20a.When with print cartridge 720 after take out mounting portion 16 during with print cartridge 720 inversions, first protuberance 731 and second protuberance 732 can receive the ink that has dripped from ink supply opening 24/ end face 22a, and ink can remain between first protuberance 731 and second protuberance 732 by capillary force.
With reference to Figure 11, the print cartridge 820 of another embodiment comprises 12 protuberances 831 that stretch out from sidewall 20a according to the present invention.These 12 protuberances 831 are identical with second protuberance 32 with first protuberance 31 aspect shape and size.12 protuberances 831 are positioned on the circumference of a circle, and the center of end face 22a (center of ink supply opening 24) is the center of this circle.12 protuberances 831 are separated from each other with identical distance, and the distance of separation Dc5 between next-door neighbour's protuberance 831 is approximately 4.5mm.Distance of separation Dc5 is less than the maximum gauge of ink supply opening 24.Even when print cartridge 820 tilted after print cartridge 820 is being taken out from mounting portion 16, protuberance 831 also can receive the ink droplet that has dripped from ink supply opening 24/ end face 22a, and ink can remain between these protuberances 831 by capillary force.
With reference to Figure 12, replace first protuberance 31 and second protuberance 32, the print cartridge 920 of another embodiment comprises first protuberance 931 and second protuberance 932 that stretches out from sidewall 20a according to the present invention.First line segment of axial centre that is connecting the axial centre of first protuberance 931 and second protuberance 932 is vertical with second line segment at the center of center that is being connected first line segment and end face 22a.Second line segment equates with the line segment at the center of center that is being connected first line segment and ink supply opening 24.First protuberance 931 and second protuberance 932 comprise side 931b and 932b respectively.Each of side 931b and 932b inclination like this, thereby the second end of each the close sidewall 20a in the close center of sidewall 20a among side 931b and the 932b along width.First protuberance 931 has along center farthest the end of width from sidewall 20a along width.Second protuberance 932 has along center farthest the end of width from sidewall 20a along width.Between the end of the end of first protuberance 931 and second protuberance 932 along the distance L of width maximum dimension D i greater than ink supply opening 24.Distance of separation between first protuberance 931 and second protuberance 932 is less than maximum dimension D i.First protuberance 931 and second protuberance 932 can receive the ink droplet that has dripped from ink supply opening 24/ end face 22a, and ink can remain between first protuberance 931 and second protuberance 932 by capillary force.And, because each of side 931b and 932b tilts, so even at ink droplet during from the part drippage at the center of departing from ink supply opening 24/ end face 22a, side 931b and/or 932b can receive ink droplet.
Can form a plurality of recessedly in the mounting portion, with the same in referring to figs. 1 through 4 described embodiments, they correspond respectively to the protuberance of print cartridge in the described embodiment of reference Fig. 5 to 12.
The invention is not restricted to above-mentioned embodiment.Can adopt various modification.For example, distance of separation can be 2mm.The distance of separation of 2mm produces stronger capillary force.The direction that protuberance stretches out can be not parallel with the direction that print cartridge is installed in the mounting portion.In this case, recessed can extend with the direction of stretching out with protuberance corresponding.Switch is not limited to physical switch.Switch can the optical detection protuberance.For example, switch can visible emitting or infrared light.
Claims (20)
1. print cartridge, it comprises:
Ink chamber, this ink chamber constitute and are used for storing ink;
Wall, this wall comprise first end and the second end opposite with first end;
Ink guide part, this ink guide part is arranged on described wall place near the second end of described wall, and the adjacent area adjacent with ink guide part with respect to described wall stretches out, wherein said ink guide part has the end and is formed on ink supply opening in this end, and described ink guide part constitutes by described ink supply opening and from ink chamber inside ink offered the print cartridge outside; And
From a plurality of protuberances that described wall stretches out, each protuberance in wherein said a plurality of protuberances has the end;
Wherein first between the end of each protuberance in described a plurality of protuberances and described wall distance is greater than at the end of described ink guide part and the second distance between the described wall,
Distance of separation between two protuberances of the next-door neighbour of described a plurality of protuberances is not more than from the diameter of the ink droplet of the end drippage of described ink guide part.
2. print cartridge as claimed in claim 1 is wherein set described distance of separation, thereby next-door neighbour's protuberance can keep ink droplet by capillary force.
3. print cartridge as claimed in claim 1, wherein said ink guide part comprises the ink-feed channel that runs through its formation, and the inside of this ink-feed channel and described ink chamber and described ink supply open communication, each protuberance in wherein said ink-feed channel and the described a plurality of protuberance extends along predetermined direction.
4. print cartridge as claimed in claim 1, the end of wherein said ink guide part comprises the annular surface around described ink supply opening, and satisfies following relation:
Dc≤2((S0×γ×3)/(ρ×π×4))
1/3
Wherein S0 is the excircle length of this annular surface, and γ is the surface tension of ink, and ρ is an ink density, and Dc is described distance of separation.
5. print cartridge as claimed in claim 4, wherein said ink guide part comprises the ink-feed channel that runs through its formation, and the inside of this ink-feed channel and described ink chamber and described ink supply open communication, each protuberance in wherein said ink-feed channel and the described a plurality of protuberance extends along predetermined direction, and wherein said annular surface is vertical with described predetermined direction.
6. print cartridge as claimed in claim 5, first line segment of axial centre of two protuberances that is wherein connecting the next-door neighbour is vertical with second line segment at the center of center that is being connected first line segment and described ink supply opening.
7. print cartridge as claimed in claim 1, wherein the distance of separation between two protuberances of any next-door neighbour in described a plurality of protuberances is not more than the diameter of ink droplet.
8. print cartridge as claimed in claim 7, wherein said a plurality of protuberances are positioned on the circumference of a circle, and the center of described ink guide part is the center of this circle.
9. print cartridge as claimed in claim 5, wherein:
Described wall comprises the 3rd end and four end opposite with the 3rd end;
Described wall has the height between the second end of the first end of described wall and described wall;
Described wall has the width between the 4th end of the 3rd end of described wall and described wall;
The short transverse of described wall is perpendicular to the width of described wall;
Two protuberances of next-door neighbour are aimed at along width;
Each protuberance in two protuberances of next-door neighbour comprises the side;
Each is laterally inclined, thus each side near described wall in the central authorities of width near the second end of described wall;
Each protuberance in two protuberances of next-door neighbour along the end of width from described wall along the central authorities of width farthest; And
Next-door neighbour two protuberances along the maximum gauge of the distance between two ends of width greater than described ink supply opening.
10. print cartridge as claimed in claim 1, wherein said ink guide part comprise constituting and are used for optionally opening and closing the valve of ink supply opening.
11. an ink-jet printer, it comprises:
The mounting portion; And
Be installed in the print cartridge as claimed in claim 1 on the described mounting portion,
Wherein said mounting portion comprises and constitutes the recessed of two protuberances being used for receiving respectively the next-door neighbour, and
Wherein said mounting portion comprises the detector that constitutes at least one protuberance in two protuberances that are used for detecting the next-door neighbour.
12. a print cartridge, it comprises:
Ink chamber, this ink chamber constitute and are used for storing ink;
Wall, this wall comprise first end and the second end opposite with first end;
Ink guide part, this ink guide part is arranged on described wall place near the second end of described wall, and the adjacent area adjacent with ink guide part with respect to described wall stretches out, wherein said ink guide part has the end and is formed on ink supply opening in this end, and described ink guide part constitutes by described ink supply opening and from ink chamber inside ink offered the print cartridge outside; And
First protuberance that stretches out from described wall and second protuberance that from described wall, stretches out, wherein each protuberance in first protuberance and second protuberance has the end;
Wherein first between the end of each protuberance in first protuberance and second protuberance and described wall distance is greater than at the end of described ink guide part and the second distance between the described wall,
Distance of separation between first protuberance and second protuberance is less than the maximum gauge of described ink supply opening.
13. print cartridge as claimed in claim 12, wherein said ink guide part comprises the ink-feed channel that runs through its formation, and the inside of described ink-feed channel and ink chamber and described ink supply open communication, each protuberance in the wherein said ink-feed channel and first protuberance and second protuberance extends along predetermined direction.
14. print cartridge as claimed in claim 12, the end of wherein said ink guide part comprises the annular surface around described ink supply opening, and satisfies following relation:
Dc≤2((S0×γ×3)/(ρ×π×4))
1/3
Wherein S0 is the excircle length of described annular surface, and γ is the surface tension that is stored in the ink in the described ink chamber, and ρ is an ink density, and Dc is described distance of separation.
15. print cartridge as claimed in claim 12, wherein first protuberance and second protuberance are between the second end of described ink guide part and described wall.
16. print cartridge as claimed in claim 15, first line segment of axial centre that is wherein connecting the axial centre of first protuberance and second protuberance is vertical with second line segment at the center of center that is being connected first line segment and described ink supply opening.
17. print cartridge as claimed in claim 16, wherein:
Described wall comprises the 3rd end and four end opposite with the 3rd end;
Described wall has the height between the second end of the first end of described wall and described wall;
Described wall has the width between the 4th end of the 3rd end of described wall and described wall;
The short transverse of described wall is perpendicular to the width of described wall;
First protuberance and second protuberance are aimed at along width;
First protuberance comprises first side;
Second protuberance comprises second side;
First is laterally inclined, thus first side near described wall in the central authorities of width near the second end of described wall;
Second is laterally inclined, thus second side near described wall in the central authorities of width near the second end of described wall;
First protuberance along the first end of width from described wall along the central authorities of width farthest;
Second protuberance along the second end of width from described wall along the central authorities of width farthest; And
Between the second end of the first end of first protuberance and second protuberance along the distance of width maximum gauge greater than described ink supply opening.
18. comprising constituting, print cartridge as claimed in claim 12, wherein said ink guide part be used for optionally opening and closing the valve of described ink supply opening.
19. print cartridge as claimed in claim 16 also comprises the 3rd protuberance,
Wherein second distance of separation between first protuberance and the 3rd protuberance is less than the maximum gauge of described ink supply opening;
Three seperation distance between second protuberance and the 3rd protuberance is less than the maximum gauge of described ink supply opening.
20. print cartridge as claimed in claim 19, the 3rd line segment of axial centre that is wherein connecting the center of described first line segment and described the 3rd protuberance is perpendicular to described first line segment.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006095468 | 2006-03-30 | ||
| JP2006095468 | 2006-03-30 | ||
| JP2006347861 | 2006-12-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101045392A CN101045392A (en) | 2007-10-03 |
| CN100542819C true CN100542819C (en) | 2009-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100919425A Active CN100542819C (en) | 2006-03-30 | 2007-03-30 | Print cartridge and ink-jet printer |
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| Country | Link |
|---|---|
| CN (1) | CN100542819C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015199264A (en) | 2014-04-08 | 2015-11-12 | ブラザー工業株式会社 | Liquid discharge device |
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2007
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| CN101045392A (en) | 2007-10-03 |
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