WO1995035529A1 - Imprimante ou photocopieur electrographique comportant un systeme de reconnaissance du cylindre de fixage - Google Patents

Imprimante ou photocopieur electrographique comportant un systeme de reconnaissance du cylindre de fixage Download PDF

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Publication number
WO1995035529A1
WO1995035529A1 PCT/DE1995/000603 DE9500603W WO9535529A1 WO 1995035529 A1 WO1995035529 A1 WO 1995035529A1 DE 9500603 W DE9500603 W DE 9500603W WO 9535529 A1 WO9535529 A1 WO 9535529A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
fixing roller
fixing
electrographic printing
printing
Prior art date
Application number
PCT/DE1995/000603
Other languages
German (de)
English (en)
Inventor
Edmund Creutzmann
Walter Kopp
Hans Winter
Original Assignee
OCé PRINTING SYSTEMS GMBH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by OCé PRINTING SYSTEMS GMBH filed Critical OCé PRINTING SYSTEMS GMBH
Priority to DE59506393T priority Critical patent/DE59506393D1/de
Priority to EP95917282A priority patent/EP0766845B1/fr
Publication of WO1995035529A1 publication Critical patent/WO1995035529A1/fr

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
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2053—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
    • 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
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat

Definitions

  • the invention relates to an electrographic printing or copying device with a thermal printing fixing station with interchangeable fixing roller and an associated fixing roller detection system.
  • heat fixing devices For thermal printing fixing of toner images onto a recording medium, which usually consists of paper, heat fixing devices with a heated fixing roller and a pressure roller are used in electrophotographic printing or copying devices.
  • the toner image is fixed on the paper under pressure and heat between the fixing roller and the pressure roller.
  • the print quality of such devices depends crucially on the fusing quality that can be achieved with the fusing station.
  • the fusing quality depends on the various operating parameters of the fusing station. These are e.g. the fixing energy supplied to the recording medium and the negative pressure with which the recording medium is braked and pressed against a preheating caliper.
  • the fixing energy supplied is of particular importance.
  • the fixing quality depends crucially on the characteristics of the recording medium.
  • EP-AI 0 593 813 In order to be able to set the operating parameters of the fixing device as a function of the characteristic data of the recording medium, it is known from EP-AI 0 593 813 to use an arrangement for menu-controlled setting of the operating parameters in an electrographic printing or copying machine with a thermofixing station Dependence on characteristic data specific to the recording medium.
  • the essential operating parameters are the fixing energy and the lower pressure in the fuser.
  • the recording medium-specific characteristics, for example the paper basis weight, and fixing levels are selected via a control panel.
  • An evaluation arrangement assigned to the controller of the device determines from the entered fixing levels and the
  • Paper weight Target values of a control arrangement which controls the operating parameters, such as fixing energy and negative pressure, in the fixing station The input of the paper basis weight and paper type and the selection of the fusing levels is carried out by calling up a menu in a control panel.
  • These functional parameters are, for example, the fixing roller temperature, the preheating saddle temperature, the heating saddle temperature, the amount of oil supplied to the oiling device, the pressure roller pressing force and the paper flow control algorithm.
  • the object of the invention is therefore to provide an electrographic printing or copying device with a thermal printing fixing station, with which it is possible in a simple manner to record fixing roller-specific characteristics and to take them into account in the fixing process. This object is achieved in an electrographic printing or copying machine of the type mentioned at the outset according to the features of the first claim.
  • the thermal printing fixing station is assigned a fixing roller detection system which scans an edge area arranged on the fixing roller with fixing roller-specific characteristic data via a scanning device and corrects or corrects the functional or operating parameters of the fixing station accordingly via a function control arrangement. influences.
  • the detection of the fixing roller coding can be carried out in various ways, for example one or more temperature-resistant magnets can be provided in the edge of the fixing roller depending on the number of fixing roller systems.
  • the magnetic field of the magnets is recorded using a non-contact HALL sensor or a REED switch. It is also possible to provide the fixing roller with one or more coding holes in the edge of the fixing roller area and to do this inductively or capacitively without contact to scan or to use an optical scanning device which, for example, has a bar code marking which characterizes the fixing roller.
  • FIG. 1 shows a schematic illustration of a thermal printing fixing station with an associated scanning device for scanning the fixing rollers
  • Figures 2 to 6 different embodiments of a coding surface on the fixing roller with an associated scanning device
  • FIG. 7 shows a schematic block diagram of the fixing roller detection system.
  • An electrophotographic printing device for printing on continuous paper contains a heat-fixing device which is shown schematically in FIG.
  • This heat fixing device is designed as a thermal pressure fixing device. It contains a heating roller 11 which is heated by radiators 10 and a pressure roller 12 which can be pivoted on and off by an electric motor to the heating roller 11.
  • the pressure mechanism for the pressure roller 12 can be designed in accordance with EP-Bl 0 505 418. This pressure mechanism makes it possible to change the pressure force F of the pressure roller 12 on the heating roller 11.
  • the heating roller 11 consists of an aluminum cylinder with a heat-resistant coating arranged thereon, the pressure roller 12 likewise consists of an aluminum cylinder with a coating of silicone or other materials.
  • an oiling device 13 is also provided, via which quantity-controllable quantity of separating oil can be supplied to the surface of the heating roller 11.
  • a heated preheating caliper 15 with associated vacuum brake is located upstream in rollers in the record carrier transport device 6 16 for the recording medium 17. It is used to preheat the recording medium 17 designed as continuous paper and to supply it to the actual fixing gap between the rollers 11 and 12 in the preheated state.
  • an unheated or only slightly heated preheating saddle can also be used to print on a continuous paper that already has a toner image on one side.
  • a cooling device 18 arranged downstream of the rollers 11 and 12 in the paper running direction ensures cooling of the heated paper.
  • the cooling device 18 contains a cooling surface 19 provided with an opening, which is swept by the recording medium 17, cold air fed in via an air supply channel 20 flowing out of the openings and a cooling air cushion being created under the recording medium.
  • the continuous paper 17 is preheated via a preheating saddle 15 which consists of two heated saddles connected in series, namely a stationary preheating saddle 21 and a heating saddle 23 which can be pivoted about a pivot point 22.
  • the printing device has a fixing roller detection system which scans a coding area 25 with features having fixing roller-specific characteristics using a scanner 24.
  • This coding area 25 is preferably located in the edge area of the fixing roller. Scanner 24 and coding area can be designed in accordance with FIGS. 2 to 6.
  • the coding area contains, depending on the number of fixing roller systems, one or more temperature-resistant magnets 26, the magnetic fields of which are detected by a non-contact HALL sensor or REED switch 27.
  • This switch 27 must be relative be arranged close to the rotating area of the fixing roller 11.
  • a pole piece 28 can be located between the switch 27 and the magnet 26 in accordance with the exemplary embodiment in FIG.
  • the coding field 25 can also have bores or depressions 29 in the fixing roller 11, which are scanned by an inductive or capacitive sensor 30. Furthermore, it is possible, as shown in FIG. 5, to press foreign materials 31 in the form of pieces of metal or pieces of plastic into the outer surface of the fixing roller 11 as coding elements and to also scan them via an inductive or capacitive sensor 30.
  • markings which can be detected optically, e.g. to apply in the form of a bar code 32 and to scan these markings via an optical sensor 33.
  • the markings are designed to be reflective in the case of dark, non-reflecting rollers and in the form of black markings in the case of light, reflective rollers.
  • the optical sensor 33 can be arranged at a variable distance from the fixing roller surface 11.
  • the function control arrangement shown in FIG. 7 is provided for setting the functional or operating parameters of the functional units, such as, for example, the fixing roller heater 10, the oiling station 13, the feed saddle 15 and the pressing force F for the pivoting mechanism for the roller.
  • Their basic structure is similar to the arrangement known from EP-AI 0 593 813 for program-controlled setting of the operating parameters of the heat-setting station as a function of characteristic data specific to the recording medium.
  • the function control arrangement is part of the device control, but it can also be designed as a separate arrangement. It essentially contains a microprocessor-controlled processing processing unit 34, which is coupled to the scanner 24.
  • Coupled with the processing unit 34 is furthermore an input unit 35 in the form of a display with an assigned keyboard, which serves, for example, to enter characteristic data specific to the recording medium, or to represent characteristic data specific to the fuser roller and instructions to the operator or operating states of the fusing stations of the overall device.
  • a power block 36 and a converter block 37 are also assigned to the processing unit 34 and connected to it.
  • the power block 36 converts the control signals of the processing unit 34 into control signals for the individual functional units of the fixing station, such as oiling station 13, pressure Mechanism 12, fuser roller heater 11 and preheating and caliper heater 21, 23 um.
  • the functional state of the functional units is scanned using appropriate sensors. Their output signals are then converted into correspondingly processable data via the converter block 37 and fed to the processing unit 34.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)

Abstract

Une machine à imprimer ou un photocopieur comporte un poste de fixage par thermo-impression comprenant un cylindre de fixage et un contre-cylindre (12), ainsi qu'un système de reconnaissance du cylindre de fixage. Ce système de reconnaissance du cylindre de fixage contient un système de commande de fonction (34, 35) qui permet de régler les paramètres de fonctionnement du poste de fixage en fonction des données caractéristiques spécifiques au cylindre de fixage qui se trouvent sur le cylindre de fixage, dans une zone de codage, et sont balayées par un dispositif de lecture (24).
PCT/DE1995/000603 1994-06-21 1995-05-08 Imprimante ou photocopieur electrographique comportant un systeme de reconnaissance du cylindre de fixage WO1995035529A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59506393T DE59506393D1 (de) 1994-06-21 1995-05-08 Elektrografisches druck- oder kopiergerät mit einem fixierwalzenerkennungssystem
EP95917282A EP0766845B1 (fr) 1994-06-21 1995-05-08 Imprimante ou photocopieur electrographique comportant un systeme de reconnaissance du cylindre de fixage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4421641 1994-06-21
DEP4421641.6 1994-06-21

Publications (1)

Publication Number Publication Date
WO1995035529A1 true WO1995035529A1 (fr) 1995-12-28

Family

ID=6521106

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1995/000603 WO1995035529A1 (fr) 1994-06-21 1995-05-08 Imprimante ou photocopieur electrographique comportant un systeme de reconnaissance du cylindre de fixage

Country Status (3)

Country Link
EP (1) EP0766845B1 (fr)
DE (1) DE59506393D1 (fr)
WO (1) WO1995035529A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6194070A (ja) * 1984-10-15 1986-05-12 Ricoh Co Ltd 作像条件設定方法
JPH03212673A (ja) * 1990-01-17 1991-09-18 Canon Inc 定着装置
EP0593813A1 (fr) * 1992-10-22 1994-04-27 Siemens Nixdorf Informationssysteme Aktiengesellschaft Imprimante ou copieur électrographique muni d'une station de fixage thermique et d'un agencement pour la sélection des paramètres de fonctionnement par commande à programme
JPH06118824A (ja) * 1992-10-06 1994-04-28 Canon Inc 加熱装置及び画像形成装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6194070A (ja) * 1984-10-15 1986-05-12 Ricoh Co Ltd 作像条件設定方法
JPH03212673A (ja) * 1990-01-17 1991-09-18 Canon Inc 定着装置
JPH06118824A (ja) * 1992-10-06 1994-04-28 Canon Inc 加熱装置及び画像形成装置
EP0593813A1 (fr) * 1992-10-22 1994-04-27 Siemens Nixdorf Informationssysteme Aktiengesellschaft Imprimante ou copieur électrographique muni d'une station de fixage thermique et d'un agencement pour la sélection des paramètres de fonctionnement par commande à programme

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 271 (P - 497) 16 September 1986 (1986-09-16) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 492 (P - 1287) 12 December 1991 (1991-12-12) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 405 (P - 1778) 28 July 1994 (1994-07-28) *

Also Published As

Publication number Publication date
EP0766845A1 (fr) 1997-04-09
EP0766845B1 (fr) 1999-07-14
DE59506393D1 (de) 1999-08-19

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