DE19832369A1 - Ink volume measuring method for ink jet printer with replaceable ink cartridge by measuring capacitance of two electrically conductive layers on ink bag - Google Patents
Ink volume measuring method for ink jet printer with replaceable ink cartridge by measuring capacitance of two electrically conductive layers on ink bagInfo
- Publication number
- DE19832369A1 DE19832369A1 DE1998132369 DE19832369A DE19832369A1 DE 19832369 A1 DE19832369 A1 DE 19832369A1 DE 1998132369 DE1998132369 DE 1998132369 DE 19832369 A DE19832369 A DE 19832369A DE 19832369 A1 DE19832369 A1 DE 19832369A1
- Authority
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- Germany
- Prior art keywords
- ink
- electrically conductive
- bag
- conductive layers
- area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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
- B41J2/17503—Ink cartridges
- B41J2/17513—Inner structure
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
- G01F23/268—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors mounting arrangements of probes
-
- 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
- B41J2002/17586—Ink level or ink residue control using ink bag deformation for ink level indication
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Ink Jet (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren und eine Einrichtung zum Messen des Tintenvo lumens eines Tintenvorratsbehälters in einem Tintendrucker eines auswechselbaren Tintenvorratsbehälters.The invention relates to a method and a device for measuring the ink volume lumen of an ink reservoir in an ink printer interchangeable ink reservoir.
Bei Tintendruckern hängt der Druckdurchsatz u. a. von der jeweils zur Verfügung stehenden Tintenmenge ab. Die Tinte ist z. B. in einem Tintenvorratsbehälter mit ei nem feststehenden Volumen enthalten. Für die den Drucker bedienende Person ist bei langen Druckzeiten sehr wichtig, die noch zur Verfügung stehende Tintenmenge zu kennen. Diese Person wird daher einen neuen, falls bekannt, größeren Druckauf trag erst auslösen, wenn sie sicher sein kann, daß genügend Tinte im Tintenvorrats behälter vorhanden ist.With ink printers the print throughput depends. a. available from each amount of ink. The ink is e.g. B. in an ink reservoir with egg contain a fixed volume. For the person operating the printer very important for long printing times, the amount of ink still available to know. This person will therefore print a new, if known, larger one trigger only when you can be sure that there is enough ink in the ink supply container is present.
Tintenvorratsbehälter sind aus Gewichtsgründen und wegen der Probleme beim Be seitigen von Abfall meist aus sehr dünnen Werkstoffen hergestellt und erlauben nicht, Sichtfenster o. ä. vorzusehen, um das Tintenniveau im Tintenvorratsbehälter zu erkennen. Es sind auch keine anderen Meßverfahren bekannt, um die noch vor handene Tintenmenge in einem beliebigen Zeitpunkt zu bestimmen.Ink tanks are for weight reasons and because of the problems with loading side of waste mostly made of very thin materials and allow not to provide viewing windows or the like to check the ink level in the ink reservoir to recognize. There are also no other measurement methods known to date to determine the amount of ink available at any time.
Der Erfindung liegt die Aufgabe zugrunde, auf einem beliebig geformten Tintenvor ratsbehälter aufbauend ein Meßverfahren aufzuzeigen und eine hierzu geeignete Einrichtung.The object of the invention is based on an arbitrarily shaped ink building a container to show a measuring method and a suitable one Facility.
Die gestellte Aufgabe wird erfindungsgemäß durch die Merkmale des kennzeich nenden Teils im Patentanspruch 1 bzw. im Patentanspruch 5 gelöst.The task is inventively characterized by the features of the ning part in claim 1 or in claim 5 solved.
Durch das Meßverfahren können sowohl Tintenvorratsbehälter mit zwei steifen Au ßenwandungen, die elastisch miteinander am Rand verbunden sind, als auch solche mit nur elastischen Wandungen eingesetzt werden. Die sich gegenüberliegenden Wandungen nähern sich mit zunehmendem Tintenabfluß immer mehr an, so daß die Kapazitätswerte immer mehr wachsen. Beim vollen Tintenvorratsbehälter sind die Kondensatorflächen weit voneinander entfernt und die Kapazität des Kondensators ist sehr klein (wenige pF je nach Art und Ausdehnung der leitfähigen Schichten). Im Lauf der Tintenentnahme schrumpft die Volumenausdehnung des Tintenbeutels und die leitfähigen Schichten nähern sich einander an. Dabei steigt die Kapazität des Kondensators an. Im Fall, daß der Tintenbeutel weitestgehend leer ist, liegen die Wandungen dicht aufeinander und die Kapazität erreicht ein Vielfaches des An fangswertes bei vollem Tintenvorratsbehälter (bis zu einigen Hundert pF je nach Art und Ausdehnung der leitfähigen Schichten). Die Kapazität kann nach heutigem Stand der Technik mit einem geringen Aufwand unter Anwendung von integrierten Bausteinen gemessen werden.The measuring method allows both ink reservoirs with two rigid Au outer walls that are elastically connected to each other at the edge, as well as such can be used with only elastic walls. The opposite Walls come closer and closer with increasing ink discharge, so that the Capacity values are growing more and more. When the ink tank is full, they are Capacitor areas far apart and the capacitance of the capacitor is very small (a few pF depending on the type and extent of the conductive layers). in the As the ink is drawn, the volume expansion of the ink bag and shrinks the conductive layers approach each other. The capacity of the Capacitor. In the event that the ink bag is largely empty, the Walls close together and the capacity reaches a multiple of that initial value with a full ink reservoir (up to a few hundred pF depending on Art and expansion of the conductive layers). The capacity can according to today State of the art with little effort using integrated Building blocks are measured.
Dabei ist es besonders vorteilhaft, daß sich die Kapazität mit zunehmender Entlee rung vergrößert, wodurch gegen Ende des Tintenvorrats eine immer sicherer wer dende Messung stattfinden kann.It is particularly advantageous that the capacity increases with increasing drainage enlargement, which makes it more and more secure towards the end of the ink supply end measurement can take place.
Diese Messung wird dahingehend durchgeführt, daß für eine Anzeige der Kondensa tor-Kapazität bzw. des entsprechenden Tintenvolumens ein Kapazitätsmeßverfahren angewendet wird, durch das ein Takt variabler Frequenz erzeugt wird, wonach die Taktdauer in einer Druckersteuerung gemessen wird, so daß diese ein direktes Maß für die jeweilige Kapazität bildet.This measurement is carried out in such a way that for an indication of the condensates gate capacity or the corresponding ink volume a capacity measurement method is applied by which a clock of variable frequency is generated, after which the Cycle time is measured in a printer controller, so that this is a direct measure for the respective capacity.
Eine Verbesserung des Verfahrens besteht sodann darin, daß bei einem Wechsel des Tintenbeutels eine Eichung auf den individuellen Wert des neuen Tintenbeutels erfolgt.An improvement of the method then consists in the fact that when changing calibration of the ink bag to the individual value of the new ink bag he follows.
Diese Technik kann nach weiteren Merkmalen ausgestaltet werden, indem im Pro gramm der Druckersteuerung eine Eichtabelle hinterlegt wird.This technique can be designed according to further features by using Pro a calibration table is stored in the printer control program.
Die Einrichtung in Tintendruckern zum Messen der noch vorhandenen Tintenmenge innerhalb eines auswechselbaren oder stationären Tintenvorratsbehälters löst die gestellte Aufgabe erfindungsgemäß dadurch, daß auf dem als Tintenbeutel mit ela stischen Wandungen ausgebildeten Tintenvorratsbehälter beidseitig flächenmäßig konfigurierte, elektrisch leitfähige Schichten als Kondensatorplatten angeordnet sind, die elektrisch an einen hochintegrierten Baustein zum Messen der momentanen Ka pazität der elektrisch leitfähigen Schichten angeschlossen sind und daß ein Takt va riabler Frequenz in eine Druckersteuerung übertragbar ist.The device in ink printers to measure the remaining amount of ink within an interchangeable or stationary ink reservoir task according to the invention in that on the as an ink bag with ela tical walls trained ink reservoir on both sides in terms of area configured, electrically conductive layers are arranged as capacitor plates, which are electrically connected to a highly integrated module for measuring the current Ka capacity of the electrically conductive layers are connected and that a clock va riabler frequency is transferable to a printer controller.
Die flächenmäßig konfigurierten, elektrisch leitfähigen Schichten sind auf der Au ßenfläche des Tintenbeutels angebracht, wodurch eine bestimmte Fertigungsme thode unterstützt wird.The electrically conductive layers configured in terms of area are on the Au Attached to the outer surface of the ink bag, whereby a certain manufacturing method is supported.
Physikalisch ist es aber auch möglich, um später eine schonende Behandlung der Tintenbeutel und der Schichten zu unterstützen, daß die flächenmäßig konfigurier ten, elektrisch leitfähigen Schichten jeweils innerhalb der Wandungen des Tinten beutels eingegossen oder umspritzt sind.Physically, however, it is also possible to treat the Ink bags and the layers to support that the area configurable th, electrically conductive layers each within the walls of the ink bags are poured or molded.
Um einen guten Mittelwert des Abstandes der beiden leitenden Schichten auf den Außenwandungen des Tintenbeutels zu erhalten, ist es vorteilhaft, daß die elek trisch leitenden Schichten möglichst viel der Tintenbeuteloberfläche bedecken. Es ist jedoch möglich, trotzdem Flächenanteile nach innen zu ersparen, indem die flä chenmäßig konfigurierten, elektrisch leitfähigen Schichten als Gitterflächen ausge bildet sind.By a good average of the distance between the two conductive layers on the To get outer walls of the ink bag, it is advantageous that the elec tric conductive layers cover as much of the ink bag surface as possible. It is however, it is still possible to save parts of the interior space by using the flä configured as electrically conductive layers as grid areas forms are.
Eine ähnliche Flächengestaltung ergibt sich dadurch, daß die flächenmäßig konfigu rierten, elektrisch leitfähigen Schichten mittels Mäanderlinien gebildet sind. Dadurch ist eine durchgehende Beschichtung nicht erforderlich.A similar area design results from the fact that the area configu rier, electrically conductive layers are formed by means of meandering lines. Thereby a continuous coating is not necessary.
Um ein gleichmäßigeres Zusammensinken des Tintenbeutels und damit ein gleich mäßigeres gegenseitiges Annähern der Kondensatorplatten des Tintenbeutels zu erreichen, sind im Bereich der konfigurierten elektrisch leitfähigen Schichten die elastischen Wandungen des Tintenbeutels relativ steif ausgeführt. Hierdurch kann der Zusammenhang Volumen/Kapazität eher einer reproduzierbaren Gesetzmä ßigkeit folgen.In order for the ink bag to collapse more evenly and thus the same more moderate mutual approximation of the capacitor plates of the ink bag achieve, are in the area of the configured electrically conductive layers elastic walls of the ink bag performed relatively stiff. This can the relationship volume / capacity is more of a reproducible law follow liquid.
Aus Gründen der Unterbringung des Tintenbeutels, seines Volumens und der An ordnung der elektrisch leitfähigen Schichten ist es vorteilhaft, daß der Tintenbeutel ein Polygon bildet.For the sake of accommodating the ink bag, its volume and the type Order of the electrically conductive layers, it is advantageous that the ink bag forms a polygon.
In der Zeichnung sind Ausführungsbeispiele der Erfindung schematisch dargestellt und werden nachfolgend näher erläutert.Exemplary embodiments of the invention are shown schematically in the drawing and are explained in more detail below.
Es zeigen:Show it:
Fig. 1 eine perspektivische Ansicht eines Tintenbeutels, Fig. 1 is a perspective view of an ink bag,
Fig. 2 ein Blockschaltbild der elektronischen Meßstrecke, Fig. 2 is a block diagram of the electronic measuring section,
Fig. 3a eine erste Alternative der elektrisch leitfähigen Schicht für Vor der- und Rückseite des Tintenbeutels und Fig. 3a shows a first alternative of the electrically conductive layer for front and back of the ink bag and
Fig. 3b eine zweite Alternative der elektrisch leitfähigen Schicht für Vorder- und Rückseite des Tintenbeutels. Fig. 3b shows a second alternative of the electrically conductive layer for the front and back of the ink bag.
Die Einrichtung in Tintendruckern zum Messen der Tintenmenge (des Tintenvolu mens) eines auswechselbaren oder stationären Tintenvorratsbehälters 1 baut zu nächst auf einem Tintenbeutel 2 mit elastischen Wandungen 3 auf (Fig. 1). Beidsei tig auf den elastischen Wandungen 3 sind flächenmäßig konfigurierte, elektrisch leitfähige Schichten 4 und 5 als Kondensatorplatten 4a und 5a angeordnet. Die Kon densatorplatten 4a und 5a sind zum Messen der momentanen Kapazität der elek trisch leitfähigen Schichten 4 und 5 an einen hoch integrierten Baustein 6 ange schlossen. In dem Baustein 6 wird ein Takt 7 mit variabler Frequenz erzeugt und in eine Druckersteuerung 8 übertragen, wo ein optisch anzeigefähiges Signal entsteht.The device in ink printers for measuring the amount of ink (the volume of ink) of an exchangeable or stationary ink reservoir 1 is based on an ink bag 2 with elastic walls 3 ( Fig. 1). Beidsei tig on the elastic walls 3 are configured, electrically conductive layers 4 and 5 arranged as capacitor plates 4 a and 5 a. The capacitor plates 4 a and 5 a are connected to measure the instantaneous capacity of the electrically conductive layers 4 and 5 to a highly integrated module 6 . A clock 7 with a variable frequency is generated in the module 6 and transferred to a printer controller 8 , where an optically displayable signal is produced.
Wie aus Fig. 1 ersichtlich ist, sind die flächenmäßig konfigurierten, elektrisch leitfähi gen Schichten 4, 5 auf der Außenfläche 2a des Tintenbeutels 2 angebracht, z. B. aufgeklebt. Jede der Schichten 4, 5 besitzt einen elektrischen Anschluß 4b bzw. 5b.As can be seen from Fig. 1, the area configured, electrically conductive layers 4 , 5 are attached to the outer surface 2 a of the ink bag 2 , for. B. glued on. Each of the layers 4 , 5 has an electrical connection 4 b and 5 b.
Die elektrisch leitfähigen Schichten 4, 5 könnten ohne weiteres auch innerhalb der Wandungen 3 des Tintenbeutels 2 eingegossen oder umspritzt sein.The electrically conductive layers 4 , 5 could easily be cast in or overmolded within the walls 3 of the ink bag 2 .
Gemäß Fig. 3a sind die flächenmäßig elektrisch leitfähigen Schichten 4, 5 als Gitter flächen 9a und 9b ausgebildet.According to FIG. 3 are the terms of surface area electrically conductive layers 4, 5 as a grating areas 9 a and 9 b is formed.
Gemäß Fig. 3b ist die elektrisch leitfähige Schicht 4, 5 aus Mäanderlinien 10a und 10b gebildet.Referring to FIG. 3b, the electrically conductive layer 4, 5 made of meander lines 10 a and 10 b formed.
Zu einer hohen Genauigkeit des Meßergebnisses trägt auch bei, daß im Bereich der konfigurierten elektrisch leitfähigen Schichten 4, 5 die elastischen Wandungen 3 des Tintenbeutels 2 relativ steif ausgeführt sind. Dadurch wird eine gleichmäßige Ände rung des Abstandes zwischen den Kondensatorplatten 4a, 5a bewirkt.The fact that the elastic walls 3 of the ink bag 2 are made relatively rigid in the region of the configured electrically conductive layers 4 , 5 also contributes to a high accuracy of the measurement result. This causes a uniform change in the distance between the capacitor plates 4 a, 5 a.
Der Tintenbeutel 2 ist gemäß Fig. 1 als viereckiges Polygon 11 gestaltet und könnte auch rund oder vieleckig im Sinn einer zentralen Fläche für die Aufnahme der leitfä higen Schichten 4 und 5 sein. The ink bag 2 is designed according to FIG. 1 as a square polygon 11 and could also be round or polygonal in the sense of a central area for receiving the conductive layers 4 and 5 .
Das Meßverfahren wird wie folgt durchgeführt:
Nach Einsetzen eines vollen Tintenbeutels 2, bei dem die elektrischen Anschlüsse
4b und 5b kontaktiert werden, sind die Kondensatorplatten 4a und 5a weit voneinan
der entfernt und die Kapazität des Kondensators ist sehr klein (z. B. einige pF nach
Art und Flächenerstreckung der leitfähigen Schichten 4, 5). Im Verlauf der Entnahme
von Tinte schrumpft die Volumenausdehnung des Tintenbeutels 2 und die leitfähig
beschichteten Außenflächen 2a nähern sich einander an. Die Kapazität des Kon
densators steigt an. Sobald der Tintenbeutel 2 praktisch leer ist, liegen die Außenflä
chen 2a dicht aufeinander und die Kapazität des Kondensators erreicht ein Vielfa
ches des Anfangswertes bei vollem Tintenbeutel 2 (bis zu einigen Hundert pF je
nach Art und Ausdehnung der leitfähigen Schichten 4, 5).The measuring procedure is carried out as follows:
After inserting a full ink bag 2 , in which the electrical connections 4 b and 5 b are contacted, the capacitor plates 4 a and 5 a are far from each other and the capacitance of the capacitor is very small (e.g. some pF of the type and Area extension of the conductive layers 4 , 5 ). In the course of the removal of ink, the volume expansion of the ink bag 2 and the conductive coated outer surfaces 2 a approach each other. The capacitance of the capacitor increases. As soon as the ink bag 2 is practically empty, the outer surfaces 2 a are close together and the capacitance of the capacitor reaches a multiple of the initial value when the ink bag 2 is full (up to a few hundred pF depending on the type and extent of the conductive layers 4 , 5 ).
Als ein typisches Ausgangssignal bei Kapazitätsmeßverfahren entsteht ein variabler Frequenz-Takt 7. Die Taktdauer dieses Signals wird durch die Druckersteuerung 8 gemessen und bildet ein direktes Maß für die zu messende Kapazität. Bei einem Wechsel des Tintenbeutels 2 erfolgt eine Eichung auf den individuellen Wert des neuen Tintenbeutels 2.A variable frequency clock 7 arises as a typical output signal in capacitance measuring methods . The cycle duration of this signal is measured by the printer controller 8 and forms a direct measure of the capacity to be measured. With a change of the ink bag 2, a calibration is performed on the individual value of the new ink bag. 2
Der Zusammenhang von Kapazität und Tintenvorratsvolumen ist erheblich nichtline ar. Die Umsetzung von Kapazitätswert in Tintenvolumen kann daher durch eine im Druckersteuerprogram m hinterlegte Eichtabelle erfolgen. The relationship between capacity and ink supply volume is considerably non-linear ar. The conversion of capacity value into ink volume can therefore by an im Printer control program m stored calibration table.
11
Tintenvorratsbehälter
Ink reservoir
22nd
Tintenbeutel
Ink bag
22nd
a Außenfläche
a outer surface
33rd
elastische Wandung
elastic wall
44th
leitfähige Schicht
conductive layer
44th
a Kondensatorplatte
a capacitor plate
44th
b elektrischer Anschluß
b electrical connection
55
leitfähige Schicht
conductive layer
55
a Kondensatorplatte
a capacitor plate
55
b elektrischer Anschluß
b electrical connection
66
hoch integrierter Baustein
highly integrated component
77
Frequenz-Takt
Frequency clock
88th
Druckersteuerung
Printer control
99
a Gitterfläche
a grid area
99
b Gitterfläche
b Grid area
1010th
a Mäanderlinie
a meander line
1010th
b Mäanderlinie
b Meander line
1111
Polygon
Polygon
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1998132369 DE19832369A1 (en) | 1998-07-18 | 1998-07-18 | Ink volume measuring method for ink jet printer with replaceable ink cartridge by measuring capacitance of two electrically conductive layers on ink bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1998132369 DE19832369A1 (en) | 1998-07-18 | 1998-07-18 | Ink volume measuring method for ink jet printer with replaceable ink cartridge by measuring capacitance of two electrically conductive layers on ink bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19832369A1 true DE19832369A1 (en) | 2000-01-20 |
Family
ID=7874532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1998132369 Ceased DE19832369A1 (en) | 1998-07-18 | 1998-07-18 | Ink volume measuring method for ink jet printer with replaceable ink cartridge by measuring capacitance of two electrically conductive layers on ink bag |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19832369A1 (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003013862A1 (en) * | 2001-08-06 | 2003-02-20 | Silverbrook Research Pty. Ltd. | A printing cartridge with capacitive sensor identification |
| WO2005102709A1 (en) * | 2004-04-23 | 2005-11-03 | Hewlett-Packard Development Company, L.P. | Inkjet print cartridge |
| AU2005200200B2 (en) * | 2001-08-06 | 2006-12-21 | Zamtec Limited | A method of identifying printing cartridge characteristics with capacitive sensors |
| US7163273B2 (en) | 1997-07-15 | 2007-01-16 | Silverbrook Research Pty Ltd | Printing cartridge with two dimensional code identification |
| US7234801B2 (en) | 2001-08-06 | 2007-06-26 | Silverbrook Research Pty Ltd | Printing cartridge with barcode identification |
| US7312845B2 (en) | 1997-07-12 | 2007-12-25 | Silverbrook Research Pty Ltd | Method of capturing and processing sensed images |
| US7524031B2 (en) | 1997-07-15 | 2009-04-28 | Silverbrook Research Pty Ltd | Inkjet printhead nozzle incorporating movable roof structures |
| US7581826B2 (en) | 1997-07-15 | 2009-09-01 | Silverbrook Research Pty Ltd | Ink reservoir |
| US7722172B2 (en) | 2001-08-06 | 2010-05-25 | Silverbrook Research Pty Ltd | Printing cartridge with radio frequency identification |
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| US8098285B2 (en) | 1997-07-15 | 2012-01-17 | Silverbrook Research Pty Ltd | Processor for image capture and printing |
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