EP1179754A2 - Programme d'isolation de processus pour un appareil électrophographique de marquage - Google Patents

Programme d'isolation de processus pour un appareil électrophographique de marquage Download PDF

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Publication number
EP1179754A2
EP1179754A2 EP01110023A EP01110023A EP1179754A2 EP 1179754 A2 EP1179754 A2 EP 1179754A2 EP 01110023 A EP01110023 A EP 01110023A EP 01110023 A EP01110023 A EP 01110023A EP 1179754 A2 EP1179754 A2 EP 1179754A2
Authority
EP
European Patent Office
Prior art keywords
electrophotographic
marking apparatus
stop
predetermined point
lcu
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
Application number
EP01110023A
Other languages
German (de)
English (en)
Other versions
EP1179754A3 (fr
EP1179754B1 (fr
Inventor
Matthias H. Regelsberger
David E. Hockey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
Heidelberger Druckmaschinen AG
Eastman Kodak Co
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 Heidelberger Druckmaschinen AG, Eastman Kodak Co filed Critical Heidelberger Druckmaschinen AG
Publication of EP1179754A2 publication Critical patent/EP1179754A2/fr
Publication of EP1179754A3 publication Critical patent/EP1179754A3/fr
Application granted granted Critical
Publication of EP1179754B1 publication Critical patent/EP1179754B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5012—Priority interrupt; Job recovery, e.g. after jamming or malfunction
    • 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
    • G03G15/55—Self-diagnostics; Malfunction or lifetime display
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00025—Machine control, e.g. regulating different parts of the machine
    • G03G2215/00029—Image density detection
    • G03G2215/00033—Image density detection on recording member
    • G03G2215/00037—Toner image detection
    • G03G2215/00042—Optical detection
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00025—Machine control, e.g. regulating different parts of the machine
    • G03G2215/00029—Image density detection
    • G03G2215/00033—Image density detection on recording member
    • G03G2215/00054—Electrostatic image detection

Definitions

  • the present invention relates to the maintenance and operational diagnosis of a electrophotographic marking apparatus, especially the optional interrupting an electrophotographic marking process during normal printing and then resuming normal printing.
  • Electrophotographic markers such as copiers and printers are required various forms of maintenance, such as Refill the toner and paper to make the keep the desired copy functions ready.
  • Refill the toner and paper to make the keep the desired copy functions ready.
  • this Devices since this Devices become more complex, the performance of the user interface is expanded when the troubleshooting in the apparatus is complete and should be designed effectively.
  • an electrophotographic marking machine which can be optionally controlled to analyze and examine the steps of the process To provide imaging prior to the completion of the electrophotographic process. Further there is a need to interrupt the electrophotographic process predetermined steps, wherein a reconfiguration process is provided to the Set the machine back to normal printing.
  • the present invention relates to an electrophotographic process control that different steps of imaging and handling paper from each other controls in isolation. This can be the reason for defects in the image that occur during image generation arise (e.g. lubrication, insufficient coverage, cloudy pressure), and problems in Handling the paper in the transport system (e.g. kinked corners, damage to the Edges) can be correctly identified and fixed efficiently.
  • the present invention also enables isolation of the steps on the paper path from insertion to Finishing.
  • the invention comprises an electrophotographic Marking apparatus with a logic and control unit, which is configured to the Printing operation stops at a predetermined point before the printing operation ends, without causing a hard stop or emergency stop configuration.
  • the predetermined point can be any copy of multiple copies, a point in time or a location correspond to the paper path.
  • the logic and control unit is selected to one To provide regeneration sequence that returns the marker to normal Print mode.
  • FIG. 10 An electrographic marking apparatus 10 is shown in FIG.
  • the present Invention is based on a special electrographic marking apparatus, such as e.g. a copier or printer. Still, it should be noted that, though the invention is suitable for use in such apparatus, but also with other types can be used by electrophotographic copiers and printers.
  • the electrophotographic marker 10 includes a paper path from which Paper feed extends to the final treatment. The term also refers to paper also sheets, paper webs, transparent carrier elements, composite carrier elements or those made of laminates.
  • a movable image bearing element e.g. a light-conducting tape 18 around a variety of Tensioned rollers, one of which is driven by a motor, pass the belt at a number of processing stations of the printer.
  • the image carrier element can also be designed as a drum.
  • the logic and control unit (LCU) 24 which can include a digital computer, assigns a stored program successive actuation of the different processing stations or subordinate systems of the apparatus 10.
  • a charging station makes the belt 18 photosensitive by applying a uniform electrostatic charge of a predetermined primary voltage V 0 to the surface of the belt.
  • the power of the first charging station is regulated by a programmable controlled power supply 30, which in turn is controlled by the LCU 24 in order to set the primary voltage V 0, for example by controlling the electrical potential (V Grid ) on a grid electrode 28b, which controls the movement of the charged ions which is caused by the operation of the charging pole wires 28a on the surface of the carrier element.
  • a negative electrical bias is present at the grid electrodes 28b, for example between -350 and -750 volts; a target bias can be -500 volts.
  • the projected light from a write head 34 modulates the electrical charge on the photoconductive belt 18 to form a latent electrostatic image to generate a document to be copied or printed.
  • the print head points preferably a series of light emitting diodes (LEDs) or another Light source, e.g. a laser or other exposure source to expose the photoconductive tape.
  • the exposure takes place picture element (pixel) for picture element with a regulated in accordance with the signals from the LCU to the write head interface 32 Intensity, the write head interface being a programmable control unit includes.
  • the exposure can be carried out by optical projection of an image of a Document made on the photoconductor.
  • the image data to be recorded from a data source 36 for generating electrical Image signals e.g. from a computer, a document scanner, a memory or a data network.
  • Signals from the data source and / or LCU can also output control signals to a writer network, etc.
  • the movement of the belt 18 in the direction of arrow A leads the areas that are latent carry electrostatographic charge images, past a developer station 38.
  • the toner or developer unit has one (several in different colors) or several Magnetic brushes next to, but at a distance from the belt.
  • Magnetic brush developer units are known from US 4,473,029 and 4,546,060.
  • the LCU 24 optionally operates the developer unit in relation to the areas of the image gliding past that carry the latent images.
  • the Magnetic brush either in contact with or at a short distance from belt 18 brought.
  • the charged toner particles of the contacted magnetic brush are called Image is drawn onto the latent image pattern to develop the pattern. In doing so also developed the calibration marks used for process control.
  • the conductive parts of the developer unit act as electrodes.
  • the electrodes are connected to a variable supply of DC potential V B , which is regulated by a programmable controller 40.
  • V B DC potential
  • DAD development of the discharged area
  • Other types of Developer units are known and can also be used.
  • a transmission unit 46 is provided to transmit one Recording sheet S in register with the image in contact with the light-guiding element bring.
  • the image is placed on a recording sheet, e.g. made of paper, or transfer a plastic sheet.
  • the transmission unit comprises a transmission corona charger 47.
  • the toner image is transferred electrostatically with a suitable voltage, which is applied to the transfer charger 47 to supply a constant current generate as described below.
  • the back of the receiver sheet is in this Example charged with a positive charge by the transfer charging device, contacts the toner image on the photoconductor element during the recording sheet in order to Drag the toner image onto the recording sheet.
  • the recording sheet can be made using a known (not )) non-stick corona charger can be released from the belt 18.
  • a Cleaning brush 48 or a knife is also arranged downstream of the transmission unit provided to remove the toner from the belt 18 so as to be reusable the surface for forming additional images is made possible.
  • a charging device 43 is provided, in this case positive charge on the Neutralize light guide element or the electrostatic adhesion of the remaining particles to reduce the volume 18.
  • the tension of cleaning and Preparation charger is controlled by a power supply 42. While separate power supplies for each charger can be shown, one Power supply with several supply lines instead of several Power supply devices are used.
  • the Receiving sheet After transferring the unfixed toner images to a recording sheet, the Receiving sheet transported to a melting unit 49, on which the image is fixed.
  • a densitometer 76 is between the developer unit 38 and the transfer unit 46 arranged.
  • the densitometer 76 monitors the development of the areas of the light-conductive tape 18, as is known from the prior art.
  • a second sensor which is also preferably provided for process control, is an electrostatic voltmeter 50.
  • a voltmeter is preferably located downstream of the first charging station 28 in order to provide readings of measured V 0 s or V 0 (m) s.
  • the output V 0 (m) s and densities, which the densitometer 76 determines, are fed to the LCU 24, which generates new setpoints for E 0 , V 0 and the actuation of the toner replenishment in accordance with a process control program.
  • the LCU 24 provides overall control of the device and its different child systems.
  • Programming commercially available Microprocessors are familiar to the person skilled in the art. The following revelation aims to enable a programmer to create a suitable control program for to write such a microprocessor.
  • the logical links described in this document can be left out of microprocessors also from or in cooperation with non-programmable (hardware) or programmable logic devices can be created.
  • programmable logic devices To the precisely control the timing of the various processing facilities, are usually encoders in conjunction with indicators on the photoconductor used to provide timely signals indicating the frame areas and their position show in relation to the different units. Other types of control for timing of operations can also be used.
  • the typical LCU 24 includes a temporary data storage, the central processing unit 154, the Timing and cycle control unit 156, the process isolation program 155 and the stored program control 158. Data input and output takes place sequentially based on or under the supervision of the program control.
  • Input data is either stored in one by the input signal latch 160 Input data processor 162 fed or by an interrupt signal processor 164.
  • the input signals are from various switches, sensors and analog-to-digital Transducers that are parts of apparatus 10, derived from or from external sources be passed on to him.
  • the output data and control signals become immediate or fed into suitable output drivers 168 by a catch register 166.
  • the Output drivers are connected to the appropriate subordinate systems.
  • the LCU 24 includes the "stop and regeneration” or “process isolation” routines to stop the electrophotographic process and to reset the Apparatus 10 to the normal printing configuration.
  • the LCU 24 thus enables Isolate the successive steps of imaging so that the respective Steps can be examined individually.
  • the LCU holds the electrophotographic Process under the control of the LCU optionally at any point under one Variety of predetermined points. When the electrophotographic process starts one of these predetermined points is stopped, an on-site engineer can resulting product and the machine configuration at the predetermined point investigate to malfunction of a particular child system or Identify image irregularities.
  • a hard stop is a complete stop of the Apparatus. In the case of a hard stop, the operator usually has to intervene and some Carry out regeneration steps. A hard stop usually includes a inevitable complete reconfiguration of the system before another step of the electrophotographic process can be done. In contrast, the Points where the process isolation program stops, different parts to continue working on the apparatus. In addition, the following can Regeneration process requirements of apparatus 10 when controlled stopping is essential be reduced.
  • Fig. 3 it is shown that the process isolation program the usual electrophotographic marking process to a predetermined point at which the marking process ends with a command from the LCU 24 becomes. This is not the case with the hard stops or the emergency stops due to a change in the apparatus, e.g. opening a door or a paper jam equate. If the LCU 24 determines the stopping of the marking process, there is not necessarily a hard stop or emergency stop of the relevant subordinate Systems. In the case of a configuration, the LCU 24 puts the apparatus 10 back on normal printing operation, initiates the subsequent printing and ends the subsequent one Printing at a predetermined location after the first termination. Consequently the process isolation program enables an investigation of the Marking process product at a variety of steps during the Marking process.
  • the process isolation program can be configured to an automatic examination on a number of successive steps causes.
  • the stops can be preprogrammed in the LCU 24, so that they are only carried out by one Engineer can be selected on site.
  • the present invention enables programming of a stop on everyone given point in the electrophotographic process.
  • a stop on everyone given point in the electrophotographic process can be a certain Sheet number can be programmed in a print job by an engineer on site.
  • the selected sheet of the print job can be placed at any point before the Registering should be stopped for an investigation of the paper path before the To enable image transmission. It is similar with duplex print jobs where one programmable stop for arches, apart from the first few arches, may be provided can, causing the examination of the duplex paper path before or after the second Transmission is made possible.
  • the predetermined stop of the electrophotographic process for any one Sheet of the print job is programmable, examining the paper path up for finishing is possible by placing a print job of appropriate length in Connection with the selection of the arc to be stopped is selected.
  • This description includes the electrophotographic process in the Print operation of the entire paper path, including the finishing steps.
  • the stop initiated by the LCU 24 originates from the LCU 24 rather than being a Response to an incident in the apparatus, e.g. opening a door, removing a tray or a stop command entered by the user.
  • the regeneration process works together with the predetermined stop point and can restore the apparatus to a normal process status or a process sequence for stop the subsequent stopping by the engineer on site.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Control Of Electric Motors In General (AREA)
EP01110023.7A 2000-05-17 2001-04-26 Programme d'isolation de processus pour un appareil électrophographique de marquage Expired - Lifetime EP1179754B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US572521 2000-05-17
US09/572,521 US6442358B1 (en) 2000-05-17 2000-05-17 Electrophotographic marking machine including a controller for the selective interruption and restart of a print mode operation and method

Publications (3)

Publication Number Publication Date
EP1179754A2 true EP1179754A2 (fr) 2002-02-13
EP1179754A3 EP1179754A3 (fr) 2004-03-03
EP1179754B1 EP1179754B1 (fr) 2014-02-12

Family

ID=24288189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01110023.7A Expired - Lifetime EP1179754B1 (fr) 2000-05-17 2001-04-26 Programme d'isolation de processus pour un appareil électrophographique de marquage

Country Status (7)

Country Link
US (1) US6442358B1 (fr)
EP (1) EP1179754B1 (fr)
JP (1) JP4694084B2 (fr)
AU (1) AU6151701A (fr)
CA (1) CA2375264C (fr)
DE (1) DE10120949A1 (fr)
WO (1) WO2001088616A2 (fr)

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JPH11342658A (ja) * 1998-05-29 1999-12-14 Toshiba Corp 印刷装置と印刷システム
US6496278B1 (en) * 1998-12-02 2002-12-17 Ricoh Company, Ltd. Image forming apparatus and printer apparatus
US6795658B2 (en) * 2002-06-05 2004-09-21 Hewlett-Packard Development Company, L.P. Method and apparatus for halting a printing device at a predetermined instant
JP3833205B2 (ja) * 2002-10-31 2006-10-11 キヤノン株式会社 情報処理装置および印刷制御方法および印刷制御プログラム
US7886093B1 (en) * 2003-07-31 2011-02-08 Hewlett-Packard Development Company, L.P. Electronic device network supporting compression and decompression in electronic devices
US7904895B1 (en) 2004-04-21 2011-03-08 Hewlett-Packard Develpment Company, L.P. Firmware update in electronic devices employing update agent in a flash memory card
US8526940B1 (en) 2004-08-17 2013-09-03 Palm, Inc. Centralized rules repository for smart phone customer care
EP2025095A2 (fr) 2006-06-08 2009-02-18 Hewlett-Packard Development Company, L.P. Gestion de dispositif sur un réseau
EP2047420A4 (fr) 2006-07-27 2009-11-18 Hewlett Packard Development Co Gestion à base d'expérience et de dependence d'utilisateur dans un dispositive mobile
US8908198B2 (en) 2010-11-16 2014-12-09 Xerox Corporation System and method for automatically rendering labeling service prints with print engine parameters
JP6428365B2 (ja) * 2015-02-23 2018-11-28 富士ゼロックス株式会社 画像形成装置及びプログラム

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Also Published As

Publication number Publication date
CA2375264A1 (fr) 2001-11-22
US6442358B1 (en) 2002-08-27
CA2375264C (fr) 2005-04-26
WO2001088616A3 (fr) 2002-07-04
EP1179754A3 (fr) 2004-03-03
JP2003533739A (ja) 2003-11-11
AU6151701A (en) 2001-11-26
WO2001088616A2 (fr) 2001-11-22
DE10120949A1 (de) 2001-12-13
EP1179754B1 (fr) 2014-02-12
JP4694084B2 (ja) 2011-06-01

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