WO1990000975A1 - Tintenvorratsbehälter für tintendruckeinrichtungen mit mehreren speicherblasen - Google Patents
Tintenvorratsbehälter für tintendruckeinrichtungen mit mehreren speicherblasen Download PDFInfo
- Publication number
- WO1990000975A1 WO1990000975A1 PCT/DE1988/000461 DE8800461W WO9000975A1 WO 1990000975 A1 WO1990000975 A1 WO 1990000975A1 DE 8800461 W DE8800461 W DE 8800461W WO 9000975 A1 WO9000975 A1 WO 9000975A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ink
- storage
- ink supply
- bubbles
- ink reservoir
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17566—Ink level or ink residue control
Definitions
- Ink reservoir for ink printers with multiple bubbles with multiple bubbles.
- ink writing devices In which ink is supplied from ink reservoirs via a supply system " into individual ink channels of the writing head and is ejected drop by drop under the action of individually controllable drive elements, it is important that the ink channels and the If the ink storage container is completely emptied, this requirement is no longer met. In this case there is a risk that air will enter the outlet nozzles and that proper writing operation will no longer be possible It is therefore necessary to recognize the end of the ink supply in the ink tank safely and in good time.
- a known arrangement provides for electrodes to be provided on the bottom of the storage container and for measuring the ink resistance between these electrodes to recognize the end of the ink supply and to generate a corresponding signal (DE-0S 27 28 283).
- This arrangement requires a suitable circuit for evaluating the changing resistance value, which must also be adjusted according to the specific values of the ink used. The effort required for this is not inconsiderable if, as in multicolor writing devices, several ink reservoirs have to be monitored.
- DE-0S 35 24 250 In addition to measuring the ink resistance, it is also known from DE-0S 35 24 250 to detect the fill level in the ink container with a sensor, which is measured by the capacitance between the ink liquid and one of these by the wall of the ink container insulated electrically conductive covering is formed. It is also known (DE-OS 35 29 805) to electromechanically scan the shape of the ink reservoir that changes when ink is consumed.
- the object of the invention is to provide an ink supply container of the type mentioned in the introduction, in which monitoring of the ink supply end is possible in a simple manner.
- a plurality of storage bubbles are provided in a support housing for receiving the ink liquid. These storage bubbles are designed in such a way that they make electrical contact in the filled state and, after falling below a minimum supply, stand out from one another and thus interrupt the contact.
- the ink reservoir also has a sensor that can be scanned by the monitoring device of the ink printing device Securing element against unauthorized refilling of the ink tank.
- This securing element can consist, for example, of an electrical fuse which is arranged inside the ink reservoir. After falling below the minimum reserve, this fuse is destroyed using the monitoring device. The condition of the fuse element is monitored with the aid of the monitoring device. If the ink supply container is refilled without authorization after consumption, the ink supply container can still not be used in the ink printing device without replacing the securing element.
- FIG. 1 shows a schematic sectional illustration through an ink supply container with a plurality of storage bubbles arranged therein
- FIG 2 FIG 3 front views of ink supply containers with the associated closure devices
- FIG. 4 shows a horizontal section through an ink reservoir according to FIG. 3 along the section line I-I and
- FIG. 5 shows a basic circuit diagram of an ink monitoring device.
- the figures show an ink reservoir of the type with an ink writing device, not shown here, of an ink writing device, e.g. is structurally connected via a latchable receiving device 8.
- the ink writing device can e.g. According to DE-OS 36 11 966 be designed as a single-color ink printing device or as a multi-color ink printing device.
- the ink reservoir according to the sectional view in FIG. 1 consists of a plastic support housing 10 with several storage bladders 11 arranged one above the other for receiving the writing fluid 12.
- the storage bladders are bag-shaped in accordance with the illustration in FIG. 4 and consist of rigid polyethylene foils 13 which are welded at the edges.
- the film forming the wall of the storage bubbles is constructed as a composite film with, for example, a 9 ⁇ m thick aluminum layer on the outer surface and a 50 ⁇ m thick polyethylene carrier layer.
- the storage bubbles thus have an electrically conductive metal surface on their outer side.
- the weld seam can be provided with a contact clip 9.
- the contact can also be made by flanging (rolling) the weld seam or by laser welding or the like.
- the storage bubbles are arranged one above the other within the support housing 10 and in such a way that they touch one another in the filled state.
- spacer elements 14, which are plate-shaped with a central opening 15, are located in the support housing 10 and encompass the edge region of the storage bubbles.
- the spacer elements 14 are freely movable within the support housing 10 and have spacer elements 16 on their edge.
- Spring elements 17 with a low spring force which are arranged above and below the storage bladders 11 press the storage bladders 11 against one another under slight pressure.
- the spring elements 17 are supported on the cover plates of the support housing 10.
- Closure devices 18 are welded into the front of the storage bladders 11. These locking devices include a connector 19, e.g. made of polyethylene, so that it can be welded to the film 13 and which can be locked in corresponding openings 20 of the support housing 10.
- the connector 19 is closed by a seal 21, e.g. made of soft rubber.
- the connection of the individual storage bladders and thus the connection of the ink supply container to the ink supply system of the ink printing device takes place in that the seal 21 is pierced by a hollow needle of the ink supply system.
- FIGS. 2 and 3 If such an ink reservoir according to FIGS. 2 and 3 is used in an ink printing device which works with several colors, the storage bubbles are filled with differently colored ink liquids.
- two ink reservoirs When used in a single-color printing device alone, two ink reservoirs, for example, be arranged one above the other with storage bubbles arranged therein. Such a structure can be seen, for example, from FIG. 2.
- This ink reservoir contains two storage bubbles which are filled with black ink sw. 3 contains three storage bubbles filled with ink liquid of the colors magenta mg, cyan cy and yellow.
- two ink storage containers can also be arranged one above the other, one of which contains only black ink liquid (FIG. 2) and the other, however, (FIG. 3) of colored ink.
- the upper storage bladder and the lower storage bladder are each contacted via electrical connections 23.
- These electrical connections 23 are connected to an ink monitoring arrangement according to FIG. 4, which serves on the one hand to monitor the ink supply in the ink supply container, and on the other hand in conjunction with corresponding security elements prevents unauthorized refilling of the ink supply container.
- the storage bubbles arranged one above the other touch in the central region of the ink reservoir in the filled state. This results in continuous electrical contact between the upper storage bladder and the lower storage bladder via the storage bladder arranged between them. If ink is now consumed during the writing operation, the storage bubbles become flatter and the spacer elements 14 move towards one another. After falling below a certain filling level, the spacing elements 16 of the spacing elements touch each other via the weld seams of the storage bladders 11 lying in between. After falling below a certain minimum supply in the storage bladders, the storage bladders lift each other off, whereby the contact path between the upper and lower storage bladders is interrupted. This interruption of the contact path can now be detected with the aid of the ink monitoring circuit in FIG. 5.
- the ink supply container additionally contains an electrical fuse element 24 in the form of an electrical fuse, which serves to prevent the ink supply container from being refilled without authorization.
- This securing element 24, which consists of an easily addressable electrical fuse, is arranged in series with the contact path formed by the contacting storage bubbles 11, as shown in FIG.
- a comparison resistor 25 is located parallel to the storage bubbles 11.
- the securing element and the comparison resistor are fixedly arranged within the support housing of the ink supply container and cannot be replaced without destroying the ink supply container.
- the arrangement of the fuse element and the comparison resistor within the ink supply container may, however, depend on the manufacturing process of the ink reservoir and on various applications of the ink reservoir in the corresponding ink printing devices.
- the filling state of the ink supply container can be determined via the voltage drop U at the inputs 23 of the storage container . Is e.g. if the voltage drop is 0 volts, ink is present and the individual storage bubbles are in electrical contact with one another. If the supply level falls below a minimum, the contact path of the storage bubbles is interrupted and the voltage drop U is present at the comparative resistor 25 at the output 23 of the storage container. In this case, a voltage pulse of somewhat higher intensity is generated with the aid of the circuit arrangement shown in FIG. 5, which ensures that the fuse 24 blows. Because of this
- the fuse element is irreversibly changed by burning through and the entire contact path within the storage container is interrupted.
- the interruption of the total contact path is interpreted by the circuit arrangement in FIG. 5 as if the ink reservoir were not present or if there was no ink reservoir in the ink printing device. This prevents unauthorized refilling of the ink reservoir.
- the fuse would have to be replaced in addition to filling the ink bubbles. However, this is not possible without destroying the ink reservoir.
- the control device of the ink printing device which is not shown in detail here, there is the arrangement for ink monitoring shown in FIG. It contains a central evaluation unit SCA which can be assigned to the printer controller and has a microprocessor arranged therein.
- the switching device 29 contains three switching transistors 30/1, 30/2, 30/3, which, if appropriate Control the input of the ink reservoir 23 to voltage sources 31 (5 V) or 32 (30 V).
- the input of the ink supply container 23 is at the voltage source 31 (5 V) and when the switching transistor 30/3 is open, the voltage drop U is resisted by the comparison via the analog-digital converter 27 - stood 25 sampled. If ink is present and the contact path via the storage bubbles 11 is closed, the voltage drop is U.0 volts.
- the control device SCA activates a warning lamp 33 on the ink printing device in order to inform the operator that the ink supply has run out and that the ink supply container must be replaced.
- a flashing light signal can be used to make this warning sign clear to the operator.
- control device SCA If the control device SCA has recognized "ink end" in the ink supply container, it connects the input 23 of the ink supply container to the 30 volt voltage source via the control port 28 and the switching transistors 30/1 and 30/2. the supply to the analog-digital converter 27 is interrupted via the switching transistor 30/3. The fuse 24 is destroyed by the high voltage.
- the voltage of 5 V which can then be measured at the input of the ink reservoir is interpreted as a signal that the ink reservoir as a whole is not available. This can be displayed, for example, as a continuous light signal via the warning device 33 and the further operation of the printing device is blocked. This prevents unauthorized refilling of the ink reservoir with writing fluid.
- the same 5 V signal is present if there is no ink reservoir in the ink printing device or the ink reservoir is incorrectly locked in the receptacle for the container.
- a mechanical contact element can also be arranged in the bottom region of the support body of the ink reservoir, which cooperates with an elastic wall of the ink container in such a way that when a minimum volume is reached, this elastic wall of the collapsed ink container actuates the contact element .
- the mechanical contact element is designed such that after reaching the minimum volume it maintains its contact position irreversibly irrespective of refilling the ink container with ink. This will e.g. thereby achieved that the contact element latches behind locking cams after the contact has been interrupted.
Landscapes
- Ink Jet (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19880905722 EP0430941A1 (de) | 1988-07-25 | 1988-07-25 | Tintenvorratsbehälter für tintendruckeinrichtungen mit mehreren speicherblasen |
PCT/DE1988/000461 WO1990000975A1 (de) | 1988-07-25 | 1988-07-25 | Tintenvorratsbehälter für tintendruckeinrichtungen mit mehreren speicherblasen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE1988/000461 WO1990000975A1 (de) | 1988-07-25 | 1988-07-25 | Tintenvorratsbehälter für tintendruckeinrichtungen mit mehreren speicherblasen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1990000975A1 true WO1990000975A1 (de) | 1990-02-08 |
Family
ID=6819607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1988/000461 WO1990000975A1 (de) | 1988-07-25 | 1988-07-25 | Tintenvorratsbehälter für tintendruckeinrichtungen mit mehreren speicherblasen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0430941A1 (de) |
WO (1) | WO1990000975A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0490545A2 (de) * | 1990-12-07 | 1992-06-17 | Canon Kabushiki Kaisha | Tintenstrahlkopfkassette, Tintenkassette aus abbaubarem Plastikmaterial für Konstruktionsteile oder Verpackung und Tintenstrahlgerät mit Befestigungsteil für diese Kassette |
US6071610A (en) * | 1993-11-12 | 2000-06-06 | Waters Investments Limited | Enhanced resolution matrix-laser desorption and ionization TOF-MS sample surface |
US6364474B1 (en) * | 1999-09-10 | 2002-04-02 | Industrial Technology Research Institute | Pressure control device |
DE19731477C2 (de) * | 1997-01-21 | 2003-10-02 | Hewlett Packard Co | Ersetzbare Tintenstrahlkassette und Verfahren zum Betreiben derselben |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4422084A (en) * | 1979-11-06 | 1983-12-20 | Epson Corporation | Fluid tank and device for detecting remaining fluid |
DE3131944C2 (de) * | 1980-08-13 | 1987-05-27 | Canon K.K., Tokio/Tokyo, Jp | |
DE3220939C2 (de) * | 1981-06-08 | 1988-02-11 | Canon K.K., Tokio/Tokyo, Jp |
-
1988
- 1988-07-25 WO PCT/DE1988/000461 patent/WO1990000975A1/de not_active Application Discontinuation
- 1988-07-25 EP EP19880905722 patent/EP0430941A1/de not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4422084A (en) * | 1979-11-06 | 1983-12-20 | Epson Corporation | Fluid tank and device for detecting remaining fluid |
DE3131944C2 (de) * | 1980-08-13 | 1987-05-27 | Canon K.K., Tokio/Tokyo, Jp | |
DE3220939C2 (de) * | 1981-06-08 | 1988-02-11 | Canon K.K., Tokio/Tokyo, Jp |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0490545A2 (de) * | 1990-12-07 | 1992-06-17 | Canon Kabushiki Kaisha | Tintenstrahlkopfkassette, Tintenkassette aus abbaubarem Plastikmaterial für Konstruktionsteile oder Verpackung und Tintenstrahlgerät mit Befestigungsteil für diese Kassette |
EP0490545B1 (de) * | 1990-12-07 | 1996-10-16 | Canon Kabushiki Kaisha | Tintenstrahlkopfkassette, Tintenkassette aus abbaubarem Plastikmaterial für Konstruktionsteile oder Verpackung und Tintenstrahlgerät mit Befestigungsteil für diese Kassette |
US6071610A (en) * | 1993-11-12 | 2000-06-06 | Waters Investments Limited | Enhanced resolution matrix-laser desorption and ionization TOF-MS sample surface |
DE19731477C2 (de) * | 1997-01-21 | 2003-10-02 | Hewlett Packard Co | Ersetzbare Tintenstrahlkassette und Verfahren zum Betreiben derselben |
US6364474B1 (en) * | 1999-09-10 | 2002-04-02 | Industrial Technology Research Institute | Pressure control device |
Also Published As
Publication number | Publication date |
---|---|
EP0430941A1 (de) | 1991-06-12 |
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