CN2541191Y

CN2541191Y - Negative pressure ink storage balance feeding ink casket of ink jetting printer

Info

Publication number: CN2541191Y
Application number: CN 01273847
Authority: CN
Inventors: 张秀琳
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-11-06
Filing date: 2001-11-06
Publication date: 2003-03-26
Anticipated expiration: 2011-11-06

Abstract

A negative-pressure even-storing ink supply cartridge comprises an ink chamber, an even ink supply chamber, and a contact air guiding valve. The utility model is characterized in that the contact air guiding valve is communicated with the even ink supply chamber via an air duct. When the cartridge in mounted in a printer, a small piston of the contact air guiding valve is jacked up, and the even ink supply chamber is communicated with air to start to supply ink to a print head. The structure of upper condensation and lower rarefaction of a shaping sponge provides a downward pressure to the ink in the sponge. The print head pumps ink from the even ink supply chamber while working to continuously lower the ink level, and when the ink level is lowered to a certain position, the upper portion of the shaping sponge drives air to enter into the ink chamber through a comb room above an air guiding tank, then the ink in the ink chamber is supplied to the even ink supply chamber through the lower portion of the air guiding tank, and finally the ink level in the shaped sponge rises to the degree of sealing the air guiding tank. The cycle of the working procedure ensures that the even ink supply chamber evenly supplies ink to the print head until the ink is used up.

Description

The inkjet printing machine negative pressure stores up black balanced ink supply print cartridge

The utility model belongs to printer material consumption, relates to a kind of print cartridge of ink-jet printer specifically, especially prevents the technology that ink droplet leaks after the stable market supply mechanism of the storage ink of print cartridge, ink and the print cartridge off line.

Ink-jet printer cartridge on the market mainly contains EPSON and Hewlett-Packard Corporation's two class print cartridges now.The EPSON print cartridge is with the carrier of sponge as ink, and that utilizes cartridge case itself concavo-convexly comes compressed sponge, and the sponge that makes the ink supply port place is than all the other sponge densifications, that is to say capillary in the ink supply port place sponge than other partly for thin.As everyone knows because the effect of surface tension of liquid, the liquid in the capillary have a kind of from thicker part part to the thin trend that partly flows, promptly have a kind of pressure that flows to tubule from extra heavy pipe.Thereby guaranteed its balance ink supply, the ink (relatively) that stores in the sponge is beaten done.The EPSON print cartridge has also increased check valve water clock ink not when guaranteeing its off line at ink outlet port recently.What in fact the CANON print cartridge used is the technology identical with EPSON, and the sponge of different is CANON print cartridge is a high-density sponge, and its capillary is thinner, so can the water clock ink after the off line.The advantage that sponge stores up black technology is that technology is simple, reliable.Its shortcoming is that sponge takies the print cartridge space, and contaminated environment, makes useless print cartridge recycling difficulty, has increased environmental protection pressure and cost.The HP print cartridge is the print cartridge of a kind of print cartridge and printhead unification, and little negative pressure that it utilizes the built-in shell fragment of print cartridge to cause cooperates printhead to form good storage China ink and ink feeding system; Its shortcoming is a technical sophistication, and manufacturing cost and use cost is higher.

The purpose of this utility model mainly is the above-mentioned shortcoming that exists in the existing print cartridge in order to overcome, provide a kind of technology simpler, both extendible ink capacity is fit to environmental requirement again, can also prevent that the negative pressure cheaply of off line water clock ink from storing up black balanced ink supply print cartridge technology.

Negative pressure is stored up black balanced ink supply print cartridge, as shown in drawings, it is characterized in that partly being made up of ink storage chamber (1), balanced ink supply chamber (2) and press-type guide valve (3) three.Ink storage chamber (1) is an airtight cavity, is used for little negative pressure storage ink; The ink storage chamber loam cake has a fabrication hole, and fabrication hole stops up with silica gel plug (5).Balanced ink supply chamber (2), soft air-guide pipe (4), press-type guide valve (3) all are contained among the print cartridge.The big end of lower openings in balanced ink supply chamber (2) communicates with ink outlet port (11), and the upper opening small end is communicated with soft air-guide pipe (4), and the little air slot (7) that its sidewall has a band broach shape structure to carry out the gas-liquid shunting is connected with ink storage chamber (1); The upper opening in balanced ink supply chamber (2) is communicated with press-type guide valve (3) through soft air-guide pipe (4).One valve piston (14) is arranged in the press-type guide valve (3), and piston and push rod thereof on the valve piston (14) all have air slot; Be with an O RunddichtringO (15) on the push rod, O RunddichtringO (15) withstands press-type guide valve valve seat under the effect of spring (12) pressure, can block the turnover of air.When the valve piston (14) on the press-type guide valve (3) during by jack-up, the gas port (13) on press-type guide valve (3) valve seat can allow the air turnover, thereby balanced ink supply chamber (2) is communicated with atmosphere.The typing sponge (6) of one fritter through the overcompression typing arranged in the balanced ink supply chamber (2), and typing sponge (6) is compressed into an end when typing have pit, the smooth shape of the other end, and the end that pit arranged up.

When the utility model print cartridge was applied to EPSON series ink-jet printer, the flush end of typing sponge (6) was close to filter screen (8), and filter screen (8) communicates with ink outlet port (11) by sealing ring (9); The sealing ring (9) that adapts with printhead is loaded in the ink outlet port (11) of print cartridge; Under storage, fortune state, the ink outlet port of print cartridge (11) has compound film (10) sealing of sealing.

When the utility model print cartridge was applied to CANON series ink-jet printer, the flush end of typing sponge (6) was close to the black core that is loaded in the ink outlet port, communicates with ink outlet port by black core; Under storage, fortune state, the print cartridge ink outlet port has the compound film sealing of sealing.

The utility model print cartridge is like this work: under the accumulating state, ink outlet port has the compound film sealing of sealing, valve piston under the effect of spring pressure shutoff gas port, therefore whole print cartridge is in a kind of sealing state.(print cartridge that is applied to the CANON series printer answers tear initiation to seal film) packs print cartridge into behind the printer, printing head base is with valve piston jack-up, make balanced ink supply chamber by soft air-guide pipe, press-type guide valve, communicate with atmosphere through gas port again, balanced ink supply chamber just can be swimmingly with ink feed to printhead.Because being a kind of going up, the typing sponge in the balanced ink supply chamber dredges close structure down, its capillary is upper coarse and lower fine, when printhead constantly extracts ink, under the effect of ink surface tension, ink level in the balanced ink supply chamber descends gradually, and its top sponge the space occurs and exposes air slot; Under the effect of little negative pressure, air enters ink storage chamber through the broach on gas port, press-type guide valve, soft air-guide pipe, air slot top, balanced ink supply chamber, ink then flows into the typing sponge in balanced ink supply chamber from the bottom of air slot, makes the continuous rising of its liquid level till the ink in the typing sponge is sealed air slot again.So move in circles, dried until ink is beaten.If because certain needs, print cartridge is taken out from printer midway, valve piston confined bed pore again under the spring pressure effect then can the water clock ink under the effect of ink outlet port little negative pressure in ink storage chamber.

The utility model print cartridge can adapt to the requirement of EPSON series, the various printer of CANON series fully, matches if any corresponding printhead, also can be applied to the HP series printer.

Claims

1. negative pressure is stored up black balanced ink supply print cartridge and is comprised airtight ink storage chamber, balanced ink supply chamber, soft air-guide pipe, a press-type guide valve; It is characterized in that: the press-type guide valve is connected with balanced ink supply chamber by soft air-guide pipe, and balanced ink supply chamber sidewall has the air slot of a band broach to communicate with ink storage chamber.

2. negative pressure is stored up fritter typing sponge is arranged in the balanced ink supply chamber of black balanced ink supply print cartridge according to claim 1, it is characterized in that: it is that end middle part compression depression, is held whole shape level with both hands that this sponge is shaped into through overcompression, its female ends is led to soft air-guide pipe up, and ink outlet port is led in its lower end.

3. negative pressure is stored up the press-type guide valve of black balanced ink supply print cartridge according to claim 1, it is characterized in that: in have a little spring to compress valve piston.

4. as the valve piston in the press-type guide valve as described in the claim 3, it is characterized in that: the piston lower end has a push rod to stretch out outside the valve seat gas port, all has air slot on push rod and the piston.

5. as the valve piston in the press-type guide valve as described in the claim 3, it is characterized in that: be with an O RunddichtringO on the piston mandril, O RunddichtringO upper end contacts with piston end surface, and the lower end contacts with valve seat.

6. a valve seat is arranged at press-type guide valve as claimed in claim 3 bottom, it is characterized in that: have a gas port to communicate with atmosphere on the valve seat, valve seat is bonding or be welded on the valve cylinder.

7. negative pressure is stored up black balanced ink supply print cartridge according to claim 1, when it uses what CANON series printer, except that having the described feature of claim 1～6, another feature of its print cartridge is: the flush end of typing sponge is connected with the black core in the ink outlet port, and Mo Xin is positioned at ink outlet port; The ink outlet port of print cartridge has composite membrane to seal under storage, the fortune state.

8. negative pressure is stored up black balanced ink supply print cartridge according to claim 1, when it uses what EPSON series printer, except that having the described feature of claim 1～6, another feature of its print cartridge is: the flush end of typing sponge is connected with filter screen, and communicate with ink outlet port by filter screen, the sealing ring that adapts with printhead is arranged in the ink outlet port; The ink outlet port of print cartridge has composite membrane to seal under storage, the fortune state.