EP0934556A1 - Processing machine with a temperature sensor - Google Patents
Processing machine with a temperature sensorInfo
- Publication number
- EP0934556A1 EP0934556A1 EP97947697A EP97947697A EP0934556A1 EP 0934556 A1 EP0934556 A1 EP 0934556A1 EP 97947697 A EP97947697 A EP 97947697A EP 97947697 A EP97947697 A EP 97947697A EP 0934556 A1 EP0934556 A1 EP 0934556A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- developer
- temperature
- mixture
- station
- toner
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0887—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
Definitions
- the present invention relates to a developer station, in particular for an electrographically operating printer or copier, in which toner is supplied to a developer in a controlled manner and the two components are mixed to form a homogeneous developer mixture.
- an original to be duplicated is imaged by exposure on a uniformly charged semiconductor material with high dark resistance (photoconductor).
- the charge image on the semiconductor material resulting from partial discharge of the semiconductor material is exposed in the developer station to a powder material (developer / toner mixture) which consists of very fine, usually colored particles of thermoplastic material which have previously been electrostatically charged. The particles remain attached to the charged areas of the charge image, which is then visible.
- This powder image is then applied to an insulating substrate, e.g. transfer a sheet of paper, foil or the like, e.g. places the printing material on the powder image and charges it electrically from the back.
- the powder image transferred to the printing material is fixed in the subsequent fixing station, e.g. fixed by heat that melts the thermoplastic powder or by chemical solvents that are sprayed on.
- the developer In the developer station, the developer is supplied with toner in a controlled manner. In order to achieve an even toner distribution, the two components must be mixed. This increases the temperature of the mixture. Furthermore, there is an increase in temperature in the developer mixture due to the supply of heat via already fixed papers during duplex printing via the photoconductor. Even high outside temperatures in the Lead the area of the developer station to increase the temperature of the mixture.
- DE 38 18 352 AI describes an image generation device with a developer station.
- the heat generated by the various units is dissipated to the outside.
- the image generating device contains a temperature sensor, the signal of which controls a device for dissipating the heat as a function of the determined temperature.
- the invention is based on the object of providing a developer station which enables a print image which is as uniform as possible regardless of the operating temperature of the developer mixture and prevents temperature-related failures, in particular due to overheating of the developer mixture.
- a developer station according to claim 1.
- Suitable countermeasures can be taken by the invention if the temperature of the developer station is too high, such as cooling the developer station by selectively switching on individual cooling units or adjusting the following operating parameters: charge quantity of the photoconductor drum, discharge current of the photoconductor drum, illuminance of the exposure unit and developer / toner Mixing ratio.
- the at least one temperature sensor is expediently arranged in the developer / toner mixture. This enables him to record the actual temperature of the mixture. By using several sensors, a better assessment of the temperature situation in the developer station can be obtained regardless of local temperature deviations.
- the temperature sensor is arranged on the housing of the developer station, the housing being made of heat-conducting material.
- the housing being made of heat-conducting material.
- At least one further temperature sensor is arranged in the developer / toner mixture.
- This arrangement of sensors both on the housing and in the interior of the developer station is particularly advantageous if the temperature difference between the inner and the outer region is of interest, especially at the start of operation or after a forced break in the standby mode.
- influencing at least one operating variable is the sole adjustment of the temperature of the developer station, e.g. by targeted cooling using one or more cooling units or by temporarily switching off the fuser and thus the copying or printing operation.
- the discharge of the photoconductor drums and the illuminance of the exposure units can also be individually adjusted on the basis of the detected temperature of the developer mixture in order, as mentioned above, to achieve a print image that is as uniform as possible from the first print ("cold mixture") to the "warm operating temperature” Get device.
- the at least one operating variable is the temperature of the developer / toner mixture, and it is influenced by switching off the developer station when the temperature exceeds an upper limit value. This also prevents clumping. The entire copying and printing operation is preferably stopped. The copier or printer can remain in standby mode until the temperature falls below the upper limit again.
- the single figure shows a schematic representation of a copier or printer system with a developer station according to the invention.
- a drive 4 drives the rollers (not shown), etc., of an exposure station 1, the developer station 2 and a fixing station 3 a.
- a temperature sensor 8a is connected to the housing 9 of the developer station 2, and a further temperature sensor 8b is located inside the developer station 2.
- Two cooling units 5 are also arranged at the developer station 2.
- the signals obtained by the temperature sensors 8a, 8b are fed to a control device 7. These signals are processed in the control device 7.
- a warning device 6 is also provided, which indicates a critical operating state of the system by means of an optical or acoustic signal.
- the cooling units 5 can be controlled by control signals K from the control device 7, e.g. to keep the temperature of the developer station 2 constant by targeted cooling by means of the cooling units 5. As mentioned at the beginning, this is important for a uniform print quality.
- the control device 7 can also emit a control signal A, which is fed to the drive 4, in order to stop the drive 4 and thus the entire system, if necessary, in order to react, for example, to overheating of the developer station 2.
- a control signal W can also be output ben, which generates the optical or acoustic warning signal in the warning device 6.
- a control signal B can also be emitted, which determines the illuminance of the exposure unit 1.
- the temperature of the developer station 2 can be influenced either automatically or manually or semi-automatically by selectively feeding each of the control signals K, A, B or W mentioned to the respective units 5, 4, 1 or 6.
- a plurality of these control signals are preferably also used in combination in order to achieve a very specific influence on the temperature in the developer station.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Or Security For Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
The present invention relates to a processing machine, especially for an electrophotographic printer or an electrophotocopier, in which the toner is supplied in a regulated manner to a developing solution, and both components are mixed to a homogeneous developing mixture. The processing machine comprises at least one temperature sensor intended to monitor the working temperature of the developing mixture/toner. The temperature sensor is connected to an adjusting device acting upon at least one of the working parameters of the processing machine.
Description
Beschreibungdescription
Entwicklerstation mit TemperatursensorDeveloper station with temperature sensor
Die vorliegende Erfindung bezieht sich auf eine Entwicklerstation, insbesondere für einen elektrografisch arbeitenden Drucker oder Kopierer, in welcher einem Entwickler kontrolliert Toner zugeführt wird und die beiden Komponenten zu einem homogenen Entwicklergemisch vermischt werden.The present invention relates to a developer station, in particular for an electrographically operating printer or copier, in which toner is supplied to a developer in a controlled manner and the two components are mixed to form a homogeneous developer mixture.
Bei der Elektrografie, auch Xerografie genannt, wird auf einem gleichförmig geladenen Halbleitermaterial mit hohem Dunkelwiderstand (Fotoleiter) ein zu duplizierendes Original durch Belichtung abgebildet. Das durch partielle Entladung des Halbleitermaterials entstehende Ladungsbild auf dem Halbleitermaterial wird in der Entwicklerstation einem Pudermaterial (Entwickler/Toner-Gemisch) ausgesetzt, das aus sehr feinen, üblicherweise je nach Bedarf eingefärbten Partikeln aus thermoplastischem Material besteht, die zuvor elektrostatisch aufgeladen wurden. Dabei bleiben die Partikel an den noch geladenen Stellen des Ladungsbildes haften, welches dadurch sichtbar wird. Dieses Puderbild wird dann auf einen isolierenden Bedruckstoff, z.B. einen Bogen Papier, eine Folie oder dergleichen, übertragen, indem man z.B. den Bedruckstoff auf das Puderbild legt und von der Rückseite her elektrisch auflädt. In der nachfolgenden Fixierstation wird das auf den Bedruckstoff übertragene Puderbild fixiert, z.B. durch Hitze, welche das thermoplastische Puder zum Schmelzen bringt, oder durch chemische Lösungsmittel, welche aufgesprüht werden, fixiert.In electrography, also called xerography, an original to be duplicated is imaged by exposure on a uniformly charged semiconductor material with high dark resistance (photoconductor). The charge image on the semiconductor material resulting from partial discharge of the semiconductor material is exposed in the developer station to a powder material (developer / toner mixture) which consists of very fine, usually colored particles of thermoplastic material which have previously been electrostatically charged. The particles remain attached to the charged areas of the charge image, which is then visible. This powder image is then applied to an insulating substrate, e.g. transfer a sheet of paper, foil or the like, e.g. places the printing material on the powder image and charges it electrically from the back. The powder image transferred to the printing material is fixed in the subsequent fixing station, e.g. fixed by heat that melts the thermoplastic powder or by chemical solvents that are sprayed on.
In der Entwicklerstation wird dem Entwickler kontrolliert Toner zugeführt. Um eine gleichmäßige Tonerverteilung zu erreichen, müssen die beiden Komponenten vermischt werden. Dadurch erhöht sich die Temperatur des Gemisches. Weiterhin kommt es zu Temperaturerhöhungen im Entwicklergemisch durch Wärmezufuhr über bereits fixierte Papiere beim Duplexdruck über den Fotoleiter. Auch können hohe Außentemperaturen im
Bereich der Entwicklerstation zur Temperaturerhöhung des Gemisches führen.In the developer station, the developer is supplied with toner in a controlled manner. In order to achieve an even toner distribution, the two components must be mixed. This increases the temperature of the mixture. Furthermore, there is an increase in temperature in the developer mixture due to the supply of heat via already fixed papers during duplex printing via the photoconductor. Even high outside temperatures in the Lead the area of the developer station to increase the temperature of the mixture.
Wenn eine obere Grenztemperatur des Entwicklergemisches von ca. 46 °C überschritten wird, können in dem Entwicklergemisch Verklumpungen auftreten, die zu Verunreinigungen des Druckbildes führen. Außerdem verändert sich die in der Entwicklerstation stattfindende Einfärbung der Fotoleitertrommel und damit die Druckqualität in Abhängigkeit von der Betriebstemperatur des Entwicklergemisches. Dies ist insbesondere nach dem Einschalten des Gerätes beim Übergang vom ersten Druck mit "kaltem Gemisch" zum "betriebswarmen" Gerät der Fall.If an upper limit temperature of the developer mixture of approximately 46 ° C. is exceeded, lumps can occur in the developer mixture, which lead to contamination of the printed image. In addition, the coloration of the photoconductor drum taking place in the developer station and thus the print quality change depending on the operating temperature of the developer mixture. This is particularly the case after switching on the device when changing from the first pressure with "cold mixture" to the "warm" device.
Die DE 38 18 352 AI beschreibt eine Bilderzeugungseinrichtung mit einer Entwicklerstation. Die durch die verschiedenen Aggregate erzeugte Wärme wird nach außen abgeführt. Die Bilderzeugungseinrichtung enthält einen Temperatursensor, dessen Signal eine Einrichtung zum Abführen der Wärme abhängig von der festgestellten Temperatur steuert.DE 38 18 352 AI describes an image generation device with a developer station. The heat generated by the various units is dissipated to the outside. The image generating device contains a temperature sensor, the signal of which controls a device for dissipating the heat as a function of the determined temperature.
Aus der JP 61-120176 A (vgl. Abstract in "Pat .Abstr. JP. Sect. P. 140, P 507) ist es bekannt, die Entwicklerstation zu kühlen, um Entwicklersubstanz in gleichbleibender Qualtität zu halten. Die Wärme eines inneren Behälters, der die Entwicklerstation aufnimmt, wird mit Hilfe einer Flüssigkeit an einen den inneren Behälter umgebenden äußeren Behälter abgeführt, der ein thermoeleketrisches Kühlelement enthält.From JP 61-120176 A (cf. abstract in "Pat. Abstracts JP. Sect. P. 140, P 507) it is known to cool the developer station in order to keep developer substance in constant quality. The heat of an inner container , which receives the developer station, is discharged with the aid of a liquid to an outer container surrounding the inner container, which contains a thermoelectric cooling element.
Der Erfindung liegt die Aufgabe zu Grunde, eine Entwickler- Station bereitzustellen, die ein möglichst gleichmäßiges Druckbild unabhängig von der Betriebstemperatur des Entwicklergemisches ermöglicht und temperaturbedingte Ausfälle, insbesondere durch Überhitzung des Entwicklergemisches, verhindert.The invention is based on the object of providing a developer station which enables a print image which is as uniform as possible regardless of the operating temperature of the developer mixture and prevents temperature-related failures, in particular due to overheating of the developer mixture.
Diese Aufgabe wird durch eine Entwicklerstation gemäß Anspruch 1 gelöst.
Durch die Erfindung können bei zu hoher Temperatur der Entwicklerstation geeignete Gegenmaßnahmen getroffen werden, wie z.B. Kühlung der Entwicklerstation durch gezieltes Einschal- ten individueller Kühlaggregate oder auch Nachregeln der folgenden Betriebsparameter: Ladungsmenge der Fotoleitertrommel, Entladestrom der Fotoleitertrommel, Beleuchtungsstärke der Belichtungseinheit und Entwickler/Toner-Mischungsverhältnis.This object is achieved by a developer station according to claim 1. Suitable countermeasures can be taken by the invention if the temperature of the developer station is too high, such as cooling the developer station by selectively switching on individual cooling units or adjusting the following operating parameters: charge quantity of the photoconductor drum, discharge current of the photoconductor drum, illuminance of the exposure unit and developer / toner Mixing ratio.
Zweckmäßigerweise ist der mindestens eine Temperatursensor im Entwickler/Toner-Gemisch angeordnet. Dadurch kann er die tatsächliche Temperatur des Gemisches erfassen. Durch die Verwendung mehrerer Sensoren läßt sich unabhängig von lokalen Temperaturabweichungen eine bessere Beurteilung der Tempera- tursituation in der Entwicklerstation gewinnen.The at least one temperature sensor is expediently arranged in the developer / toner mixture. This enables him to record the actual temperature of the mixture. By using several sensors, a better assessment of the temperature situation in the developer station can be obtained regardless of local temperature deviations.
Bei der Erfindung ist der Temperatursensor am Gehäuse der EntwicklerStation angeordnet, wobei das Gehäuse aus wärmeleitendem Material besteht. Dadurch werden einerseits lokale Temperaturspitzen der Entwicklerstation, die zu lokalen Verklupungen führen können, durch Wärmeleitung über das Gehäuse ausgeglichen und andererseits eine kostengünstigere äußere Anbringungsmöglichkeit des bzw. der Temperatursensoren geschaffen.In the invention, the temperature sensor is arranged on the housing of the developer station, the housing being made of heat-conducting material. On the one hand, local temperature peaks of the developer station, which can lead to local jamming, are compensated for by heat conduction through the housing, and, on the other hand, a more cost-effective possibility of attaching the temperature sensor or sensors is created.
Weiterhin ist mindestens ein weiterer Temperatursensor im Entwickler/Toner-Gemisch angeordnet. Diese Anordnung von Sensoren sowohl am Gehäuse als auch im Innern der Entwicklerstation ist besonders vorteilhaft, wenn die Temperaturdifferenz zwischen dem inneren und dem äußeren Bereich speziell zu Betriebsbeginn oder nach einer Zwangspause im Bereitschaftsmodus von Interesse ist.Furthermore, at least one further temperature sensor is arranged in the developer / toner mixture. This arrangement of sensors both on the housing and in the interior of the developer station is particularly advantageous if the temperature difference between the inner and the outer region is of interest, especially at the start of operation or after a forced break in the standby mode.
Bei dem erfindungsgemäßen Verfahren zum Überwachen und Regeln der Temperatur der Entwicklerstation und ihres Entwicklergemisches, insbesondere des Entwickler/Toner-Gemisches eines
elektrografisch arbeitenden Druckers oder Kopierers, werden die folgenden Schritte durchgeführt:In the method according to the invention for monitoring and regulating the temperature of the developer station and its developer mixture, in particular the developer / toner mixture The following steps are carried out using an electrographic printer or copier:
- Erzeugen eines Temperatursignals des Entwickler/Toner-Gemisches mittels eines Temperatursensors - Zuführen des Temperatursignals an eine Steuerungsvorrichtung- Generation of a temperature signal of the developer / toner mixture by means of a temperature sensor - Supply of the temperature signal to a control device
- Beeinflussen mindestens einer Betriebsgröße der Entwicklerstation mittels der Steuerungsvorrichtung auf der Grundlage des durch den Temperatursensor erzeugten Temperatursignals des Entwickler/Toner-Gemisches.Influencing at least one operating variable of the developer station by means of the control device on the basis of the temperature signal of the developer / toner mixture generated by the temperature sensor.
Zweckmäßigerweise handelt es sich bei der Beeinflussung mindestens einer Betriebsgröße um die alleinige Nachregelung der Temperatur der Entwicklerstation, z.B. durch gezieltes Kühlen mittels eines oder mehrerer Kühlaggregate oder durch vorübergehendes Abschalten der Fixierstation und somit des Kopieroder Druckbetriebs.Expediently, influencing at least one operating variable is the sole adjustment of the temperature of the developer station, e.g. by targeted cooling using one or more cooling units or by temporarily switching off the fuser and thus the copying or printing operation.
Allerdings kann auch auf der Grundlage der erfaßten Tempera- tur des Entwicklergemisches die Entladung der Fotoleitertrommeln und die Beleuchtungsstärke der Belichtungseinheiten individuell nachgeregelt werden, um, wie oben erwähnt, ein möglichst gleichmäßiges Druckbild vom ersten Druck ("kaltes Gemisch") bis zum "betriebswarmen" Gerät zu erhalten.However, the discharge of the photoconductor drums and the illuminance of the exposure units can also be individually adjusted on the basis of the detected temperature of the developer mixture in order, as mentioned above, to achieve a print image that is as uniform as possible from the first print ("cold mixture") to the "warm operating temperature" Get device.
In einer speziellen Ausgestaltung ist die mindestens eine Betriebsgröße die Temperatur des Entwickler/Toner-Gemisches, und ihre Beeinflussung erfolt durch Abschalten der Entwicklerstation, wenn die Temperatur einen oberen Grenzwert über- schreitet. Dadurch werden ebenfalls Verklumpungen vermieden. Vorzugsweise wird der gesamte Kopier- und Druckbetrieb gestoppt. Der Kopierer bzw. Drucker kann dabei im Bereitschaftsmodus verweilen bis die obere Grenztemperatur wieder unterschritten wird.
Weitere Vorteile, Merkmale und Anwendungsmöglichkeiten der Erfindung ergeben sich aus der folgenden Beschreibung eines Ausführungsbeispiels an Hand der Zeichnung, wobeiIn a special embodiment, the at least one operating variable is the temperature of the developer / toner mixture, and it is influenced by switching off the developer station when the temperature exceeds an upper limit value. This also prevents clumping. The entire copying and printing operation is preferably stopped. The copier or printer can remain in standby mode until the temperature falls below the upper limit again. Further advantages, features and possible uses of the invention result from the following description of an exemplary embodiment with reference to the drawing, in which:
die einzige Figur eine schematische Darstellung eines Kopierer- oder Druckersystems mit einer erfindungsgemäßen Entwicklerstation zeigt.the single figure shows a schematic representation of a copier or printer system with a developer station according to the invention.
Die Figur zeigt schematisch eine erfindungsgemäße Entwickler- Station 2 zusammen mit anderen benachbarten Stationen eines Druckers oder Kopierers. Ein Antrieb 4 treibt die (nicht gezeigten) Walzen, Trommeln etc. einer Belichtungsstation 1, der Entwicklerstation 2 sowie einer Fixierstation 3 a . Am Gehäuse 9 der Entwicklerstation 2 ist ein Temperatursensor 8a angeschlossen, und im Innern der Entwicklerstation 2 befindet sich ein weiterer Temperatursensor 8b. Ebenfalls an der Entwicklerstation 2 angeordnet sind zwei Kühlaggregate 5. Einer Steuerungsvorrichtung 7 werden die von den Temperatursensoren 8a, 8b gewonnenen Signale zugeführt. Diese Signale werden in der Steuerungsvorrichtung 7 verarbeitet. Schließlich ist noch eine Warnvorrichtung 6 vorgesehen, die durch optisches oder akustisches Signal einen kritischen Betriebszustand des Systems anzeigt.The figure schematically shows a developer station 2 according to the invention together with other neighboring stations of a printer or copier. A drive 4 drives the rollers (not shown), etc., of an exposure station 1, the developer station 2 and a fixing station 3 a. A temperature sensor 8a is connected to the housing 9 of the developer station 2, and a further temperature sensor 8b is located inside the developer station 2. Two cooling units 5 are also arranged at the developer station 2. The signals obtained by the temperature sensors 8a, 8b are fed to a control device 7. These signals are processed in the control device 7. Finally, a warning device 6 is also provided, which indicates a critical operating state of the system by means of an optical or acoustic signal.
Auf der Grundlage der gewonnenen Temperatursignale Sa und Sb können die Kühlaggregate 5 durch Steuersignale K von der Steuerungsvorrichtung 7 angesteuert werden, um z.B. durch gezielte Kühlung mittels der Kühlaggregate 5 die Temperatur der Entwicklerstation 2 konstant zu halten. Dies ist, wie eingangs erwähnt, für eine einheitliche Druckqualität wichtig.On the basis of the temperature signals Sa and Sb obtained, the cooling units 5 can be controlled by control signals K from the control device 7, e.g. to keep the temperature of the developer station 2 constant by targeted cooling by means of the cooling units 5. As mentioned at the beginning, this is important for a uniform print quality.
Die Steuerungsvorrichtung 7 kann auch ein Steuersignal A abgeben, welches dem Antrieb 4 zugeführt wird, um bei Bedarf den Antrieb 4 und damit das gesamte System zu stoppen, um z.B. auf eine Überhitzung der Entwicklerstation 2 zu reagieren. Gleichzeitig kann dabei auch ein Steuersignal W abgege-
ben werden, welches in der Warnvorrichtung 6 das optische oder akustische Warnsignal erzeugt. Schließlich kann auch ein Steuersignal B abgegeben werden, welches die Beleuchtungsstärke der Belichtungseinheit 1 bestimmt.The control device 7 can also emit a control signal A, which is fed to the drive 4, in order to stop the drive 4 and thus the entire system, if necessary, in order to react, for example, to overheating of the developer station 2. At the same time, a control signal W can also be output ben, which generates the optical or acoustic warning signal in the warning device 6. Finally, a control signal B can also be emitted, which determines the illuminance of the exposure unit 1.
Durch gezieltes Zuführen jedes der genannten Steuersignale K, A, B oder W an die jeweiligen Einheiten 5, 4, 1 bzw. 6 läßt sich die Temperatur der Entwicklerstation 2 entweder automatisch oder manuell bzw. halbautomatisch beeinflussen. Vor- zugsweise werden auch mehrere dieser Steuersignale in Kombination verwendet, um eine ganz gezielte Beeinflussung der Temperatur in der Entwicklerstation zu erzielen.
The temperature of the developer station 2 can be influenced either automatically or manually or semi-automatically by selectively feeding each of the control signals K, A, B or W mentioned to the respective units 5, 4, 1 or 6. A plurality of these control signals are preferably also used in combination in order to achieve a very specific influence on the temperature in the developer station.
Claims
1. Entwicklerstation (2), insbesondere für einen elektrogra- fisch arbeitenden Drucker oder Kopierer, in welcher einem1. Developer station (2), in particular for an electrographically operating printer or copier, in which one
Entwickler kontrolliert Toner zugeführt wird und die beiden Komponenten zu einem homogenen Entwicklergemisch vermischt werden, dadurch gekennzeichnet, daß die Entwicklerstation (2) einen ersten Temperatursensor (8b) zum Erfassen derDeveloper controlled toner is supplied and the two components are mixed to form a homogeneous developer mixture, characterized in that the developer station (2) has a first temperature sensor (8b) for detecting the
Betriebstemperatur des Entwickler/Toner-Gemisches, der imOperating temperature of the developer / toner mixture, which in the
Entwickler/Toner-Gemisch angeordnet ist, sowie einen zweiten Temperatursensors (8a) enthält, der am GehäuseDeveloper / toner mixture is arranged, and contains a second temperature sensor (8a) on the housing
(9) der Entwicklerstation 2 angeordnet ist, wobei das Gehäuse aus wärmeleitendem Material besteht, und daß beide Temperatursensoren (8a, 8b) mit einer Steuerungsvorrichtung (7) zum Steuern mindestens eines der Betriebsparameter der Entwicklerstation verbunden sind.(9) of the developer station 2 is arranged, the housing being made of heat-conducting material, and that both temperature sensors (8a, 8b) are connected to a control device (7) for controlling at least one of the operating parameters of the developer station.
2. Entwicklerstation nach Anspruch 1, dadurch gekennzeichnet, daß mindestens ein weiterer Temperatursensor (8b) im Entwickler/Toner-Gemisch angeordnet ist.2. Developer station according to claim 1, characterized in that at least one further temperature sensor (8b) is arranged in the developer / toner mixture.
3. Entwicklerstation nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sie mindestens ein Kühlaggregat (5) aufweist.3. Developer station according to claim 1 or 2, characterized in that it has at least one cooling unit (5).
4. Verfahren zum Überwachen und Regeln der Temperatur der Entwicklerstation und ihres Entwicklergemisches, insbesondere des Entwickler/Toner-Gemisches eines elektrogra- fisch arbeitenden Druckers oder Kopierers, gekennzeichnet durch die folgenden Schritte:4. A method for monitoring and regulating the temperature of the developer station and its developer mixture, in particular the developer / toner mixture of an electrographically operating printer or copier, characterized by the following steps:
- Erzeugen eines Temperatursignals des Entwickler/Toner- Gemisches mittels eines Temperatursensors- Generation of a temperature signal of the developer / toner mixture by means of a temperature sensor
- Zuführen des Temperatursignals an eine Steuerungsvorrichtung- Feeding the temperature signal to a control device
- Beeinflussen mindestens einer Betriebsgröße der Entwicklerstation mittels der Steuerungsvorrichtung auf der Grundlage des durch den Temperatursensor erzeugten Temperatursignals des Entwickler/Toner- Gemisches.- Affect at least one company size of the Developer station by means of the control device on the basis of the temperature signal of the developer / toner mixture generated by the temperature sensor.
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die mindestens eine Betriebsgröße die Temperatur des Entwickler/Toner-Gemisches ist und ihre Beeinflussung mittels mindestens eines Kühlaggregates erfolgt, um die Tem- peratur innerhalb eines Betriebsbereiches zu halten.5. The method according to claim 4, characterized in that the at least one operating variable is the temperature of the developer / toner mixture and is influenced by means of at least one cooling unit in order to keep the temperature within an operating range.
6. Verfahren nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß auf Grund der erfaßten Temperatur des Entwicklergemisches zu deren Beeinflussung die Entladung der Fotoleitertrommeln und die Beleuchtungsstärke der6. The method according to claim 4 or 5, characterized in that due to the detected temperature of the developer mixture to influence the discharge of the photoconductor drums and the illuminance of the
Belichtungseinheiten individuell nachgeregelt werden, um ein möglichst gleichmäßiges Druckbild vom ersten DruckExposure units can be individually adjusted to ensure the most uniform print image possible from the first print
("kaltes Gemisch") bis zum "betriebswarmen" Gerät zu erhalten.("cold mixture") up to the "warm" device.
7. Verfahren nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß die mindestens eine Betriebsgröße die Temperatur des Entwickler/Toner-Gemisches ist und ihre Beeinflussung durch Abschalten der Entwicklerstation erfolgt, wenn die Temperatur einen oberen Grenzwert überschreitet . 7. The method according to any one of claims 4 to 6, characterized in that the at least one operating variable is the temperature of the developer / toner mixture and is influenced by switching off the developer station when the temperature exceeds an upper limit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19643631 | 1996-10-22 | ||
| DE19643631 | 1996-10-22 | ||
| PCT/DE1997/002432 WO1998018059A1 (en) | 1996-10-22 | 1997-10-20 | Processing machine with a temperature sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0934556A1 true EP0934556A1 (en) | 1999-08-11 |
| EP0934556B1 EP0934556B1 (en) | 2003-01-08 |
Family
ID=7809490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97947697A Expired - Lifetime EP0934556B1 (en) | 1996-10-22 | 1997-10-20 | Process for generating a printed image |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6185382B1 (en) |
| EP (1) | EP0934556B1 (en) |
| JP (1) | JP2001506371A (en) |
| DE (2) | DE19781189D2 (en) |
| WO (1) | WO1998018059A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6473573B2 (en) * | 2001-03-21 | 2002-10-29 | Toshiba Tec Kabushiki Kaisha | Developing apparatus with temperature sensor |
| US7585532B2 (en) * | 2001-10-29 | 2009-09-08 | Frito-Lay North America, Inc. | Apparatus and method for improving the dimensional quality of extruded food products having complex shapes |
| US6941089B2 (en) * | 2003-10-20 | 2005-09-06 | Xerox Corporation | Heating system for a developer housing |
| US6963704B2 (en) * | 2003-10-20 | 2005-11-08 | Xerox Corporation | Heating system for a developer housing |
| US6973277B2 (en) * | 2003-11-25 | 2005-12-06 | Eastman Kodak Company | Printing apparatus and method with improved control of airflow |
| US7031633B2 (en) * | 2003-11-25 | 2006-04-18 | Eastman Kodak Company | Printing apparatus and method with improved control of humidity and temperature |
| JP5043612B2 (en) * | 2007-11-27 | 2012-10-10 | キヤノン株式会社 | Image forming apparatus |
| JP5743506B2 (en) * | 2010-11-30 | 2015-07-01 | キヤノン株式会社 | Image forming apparatus |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5883875A (en) * | 1981-11-12 | 1983-05-19 | Canon Inc | Cooling device for developing machine |
| JPS6250851A (en) * | 1985-08-30 | 1987-03-05 | Toshiba Corp | Image forming device |
| JPS62127776A (en) * | 1985-11-28 | 1987-06-10 | Sharp Corp | Developing device |
| JPS63142378A (en) * | 1986-12-04 | 1988-06-14 | Canon Inc | Image forming device |
| JPS63144371A (en) * | 1986-12-08 | 1988-06-16 | Ricoh Co Ltd | Developing device |
| EP0276112B1 (en) * | 1987-01-19 | 1993-03-31 | Canon Kabushiki Kaisha | An image forming apparatus |
| JP2607523B2 (en) | 1987-05-30 | 1997-05-07 | 株式会社東芝 | Image forming device |
| US5034772A (en) * | 1987-09-25 | 1991-07-23 | Canon Kabushiki Kaisha | Humidity measurement device and image forming apparatus having the same |
| US5038170A (en) * | 1989-03-30 | 1991-08-06 | Kabushiki Kaisha Toshiba | Cooling system for an image forming apparatus |
| US5095333A (en) * | 1989-05-29 | 1992-03-10 | Konica Corporation | Image recording apparatus with cooling fan |
| JPH03172876A (en) * | 1989-12-01 | 1991-07-26 | Ricoh Co Ltd | Developing device |
| US5191362A (en) * | 1990-02-21 | 1993-03-02 | Tokyo Electric Co., Ltd. | Electrophotographic printing apparatus with a control system responsive to temperature changes |
| JPH04134364A (en) * | 1990-09-26 | 1992-05-08 | Brother Ind Ltd | Image output device |
| JP2936146B2 (en) * | 1990-10-31 | 1999-08-23 | 三田工業株式会社 | Cooling device for image forming device |
| JP3241134B2 (en) | 1992-12-19 | 2001-12-25 | 株式会社リコー | Toner adhesion amount measuring method and image forming apparatus |
| US5530556A (en) * | 1993-02-10 | 1996-06-25 | Canon Kabushiki Kaisha | Recording apparatus with dual independent control limits |
| US5689766A (en) * | 1995-10-25 | 1997-11-18 | Xerox Corporation | Apparatus for controlling air flow in a printing machine |
| JPH09160473A (en) * | 1995-12-08 | 1997-06-20 | Hitachi Koki Co Ltd | Image forming device |
-
1997
- 1997-10-20 DE DE19781189T patent/DE19781189D2/en not_active Ceased
- 1997-10-20 US US09/284,763 patent/US6185382B1/en not_active Expired - Lifetime
- 1997-10-20 EP EP97947697A patent/EP0934556B1/en not_active Expired - Lifetime
- 1997-10-20 JP JP51882298A patent/JP2001506371A/en not_active Ceased
- 1997-10-20 WO PCT/DE1997/002432 patent/WO1998018059A1/en active IP Right Grant
- 1997-10-20 DE DE59709114T patent/DE59709114D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9818059A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19781189D2 (en) | 1999-12-23 |
| JP2001506371A (en) | 2001-05-15 |
| EP0934556B1 (en) | 2003-01-08 |
| US6185382B1 (en) | 2001-02-06 |
| DE59709114D1 (en) | 2003-02-13 |
| WO1998018059A1 (en) | 1998-04-30 |
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