EP0075974B1 - Verfahren zur Steuerung einer elektrographischen Einrichtung sowie derartige Einrichtung zur Ausführung des Verfahrens - Google Patents

Verfahren zur Steuerung einer elektrographischen Einrichtung sowie derartige Einrichtung zur Ausführung des Verfahrens Download PDF

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Publication number
EP0075974B1
EP0075974B1 EP82201042A EP82201042A EP0075974B1 EP 0075974 B1 EP0075974 B1 EP 0075974B1 EP 82201042 A EP82201042 A EP 82201042A EP 82201042 A EP82201042 A EP 82201042A EP 0075974 B1 EP0075974 B1 EP 0075974B1
Authority
EP
European Patent Office
Prior art keywords
sheets
pile
signal
electrographic
height
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.)
Expired
Application number
EP82201042A
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English (en)
French (fr)
Other versions
EP0075974A1 (de
Inventor
Gerardus Antonius Josef Koeleman
Franciscus Antonius Van De Laarschot
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.)
Canon Production Printing Netherlands BV
Original Assignee
Oce Nederland BV
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 Oce Nederland BV filed Critical Oce Nederland BV
Publication of EP0075974A1 publication Critical patent/EP0075974A1/de
Application granted granted Critical
Publication of EP0075974B1 publication Critical patent/EP0075974B1/de
Expired legal-status Critical Current

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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
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6502—Supplying of sheet copy material; Cassettes therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/20—Controlling associated apparatus

Definitions

  • This invention relates to a method of controlling an electrographic device by means of which sheets of receiving material can be printed, the sheets being present in the form of a pile in a magazine.
  • the invention also relates to an electrographic device for carrying out the said method by means of which device sheet-like receiving material can be printed, and comprising a supporting surface on which a pile of the sheets of receiving material can be placed in readiness, a detection device for determining the distance between the top sheet of the pile and the supporting surface, and a means of setting a required number of sheets to be printed by the device.
  • a method and electrographic device of this kind are known in practice. It is also known to prevent further copying, if a predetermined weight or height of the feed pile is reached (US-A-3806242)..
  • a method of this kind is used, for example, in an electrographic device in order to obviate the need to add sheets of paper during a copying run.
  • the minimum pile height of the sheets of receiving material is frequently made larger than the maximum possible run of, for example, 99 copies. If, however, longer copying runs are required, e.g. to 999 copies, problems arise.
  • a copying run will fairly often have to be interrupted because the sheet magazine is empty, and this is considered a disadvantage.
  • the object of the invention is to remedy this problem in a simple manner.
  • the number of sheets present in the pile is determined from the height of the pile, the number thus determined is compared with a required number of sheets to be printed, and a signal is generated indicating which of the two numbers is the larger.
  • the method according to the invention enables any operator of the electrographic device to check whether he can have a copying run started by him carried out. If the run length is longer than the stock of sheets, an indication is given, e.g. "add paper" or the number of sheets still present is shown and, if necessary, the run is blocked.
  • the electrographic device is so constructed that a control device is provided, which from a signal delivered by the detection device derives a first signal which is an indication of the number of sheets still present in the pile, said control device comparing the first signal with a second signal derived from the setting of the setting means in order to generate a third signal if the required number of sheets to be printed is larger than the number of sheets present in the pile.
  • tne electrographic device is prevented from coming into operation if the required number of sheets to be printed is larger than the determined number of sheets present.
  • the electrographic device can be so constructed that means are provided which can prevent the device from coming into operation, said means being connected to the control device and responding to the third signal.
  • the electrographic device is so constructed that the amount of stock remaining at any time, expressed as the number of sheets present, is indicated to the operator.
  • the control device may be provided with a selector switch for setting a conversion factor which is used as a parameter according to the type of paper used, said conversion factor indicating the height per sheet in order to determine, from the first signal based on the pile height, the remaining stock.
  • control device may also be provided with a sampling circuit to fix the first signals at times determined by the counts of the counter at the beginning and the end of a copying run, and the control device divides the difference in height determined from the first signals on each copy run by the associated difference in counts in order to determine, from the recent first signal based on the pile height, the remaining stock.
  • reference 1 denotes the detection device or height sensor
  • 2 is a buffer amplifier
  • 10 a setting means for setting the required number of sheets to be printed
  • 3 is a differential amplifier to which a selector switch 4 can be connected
  • 18 is a differential amplifier
  • 9 a signalling means
  • 11 a means of blocking the device to prevent its operation
  • 5 a conversion unit which can comprise a sampling circuit 6, 7 a counter, and 8 an indicator for indicating the number of sheets in the remaining stock in the magazine.
  • Operation is as follows.
  • the first signal from the detector device 1 is compared, in the differential amplifier 18, with the second signal from the setting means 10.
  • the third signal from amplifier 18 is fed to the signalling means 9 and the means 11.
  • the signalling means 9 indicates that the required number of sheets to be printed is larger than the numbers of sheets present in the pile, e.g. by displaying "add paper", or else the converse, in which case the copying run can be continued to the end. If the required number of sheets to be printed is larger than the number present, means 11 can prevent the device from coming into operation.
  • the other circuits comprise two variants.
  • the selector switch 4 is set to the basis weight of the type of paper used. For each type of paper this is a conversion factor which can be used as a parameter to indicate the height per sheet.
  • the voltage derived from the selector switch 4 is fed to one input, and the signal from the amplifier 2 is fed to the other input, of the differential amplifier 3.
  • the voltage from the differential amplifier 3 is then converted in the conversion unit 5 to a signal that directly indicates on indicator 8 the remaining stock, accurately expressed as the number of sheets present.
  • the counter 7 which in each case counts the number of sheets removed per run is connected to the conversion unit 5.
  • the latter comprises a sampling circuit 6 which determines the continuously sensed pile height at times determined by counts of the counter which are consecutive at intervals.
  • An interval of this kind may, for example comprise ten sheets.
  • the count of the counter is determined at the beginning and end of a run.
  • the height difference determined per interval is divided in the conversion unit by the associated difference in counts which can be used as a parameter and from which division the height per sheet follows.
  • the voltage taken from the differential amplifier 3 is then converted in conversion unit 5 to a signal that directly indicates on indicator 8 the remaining stock, accurately expressed as the number of sheets present.
  • reference 16 denotes a table or supporting surface in the magazine, on which the pile of sheets 17 rests, 12 is a lifting mechanism, 13 a first potentiometer, and 14 a second potentiometer with an associated sensor 15.
  • the potentiometer 13 coupled to the driving chain wheel of the lift mechanism 12 delivers a specific voltage for each position of the lifting mechanism, which voltage indicates the pile height.
  • This potentiometer may, for example, be a ten turns potentiometer.
  • the table 16 can also be kept at a constant level, in which case the potentiometer 14 then delivers a voltage from which the remaining stock is determined via the conversion unit.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Pile Receivers (AREA)

Claims (7)

1. Verfahren zur Steuerung einer elektrografischen Einrichtung, mit der Blätter aus Empfangsmaterial bedruckt werden können, welche Blätter in Form eines Stapels in einem Magazin enthalten sind, dadurch gekennzeichnet, dass die Zahl der in dem Stapel (17) vorhandenen Blätter in Abhängigkeit von der Höhe des Stapels (17) bestimmt wird, dass die derart bestimmte Zahl mit einer benötigten Zahl von zu bedruckenden Blättern verglichen wird, und dass ein Signal erzeugt wird, das anzeigt, welche der beiden Zahlen grösser ist.
2. Verfahren nach Anspruch 1, dadurch gekenzeichnet, dass die elektrografische Einrichtung an einer Betriebsaufnahme gehindert ist, wenn die benötigte Zahl grösser als die festgestellte Zahl ist.
3. Elektrografische Einrichtung zum Bedrucken blattförmigem Empfangsmaterial, mit einer Stützfläche, auf der ein Stapel aus Blättern des Empfangsmaterials in Bereitschaft angeordnet werden kann, mit einer Detektoreinrichtung zur Bestimmung des Abstands zwischen dem obersten Blatt des Stapels und der Stützfläche, sowie mit einer Einrichtung zur Einstellung einer benötigten Anzahl von durch die Einrichtung zu bedruckenden Blättern, dadurch gekennzeichnet, dass eine Steuereinrichtung (1 bis 10, 18) vorgesehen ist, die von einem von der Detektoreinrichtung (1) gelieferten Signal ein erstes Signal ableitet, dass die Anzahl der noch in dem Stapel (17) vorhandenen Blätter anzeigt, welche Steuereinrichtung (1 bis 10, 18) das erste Signal mit einem zweiten, von der Einstellung der Einstellungseinrichtung (10) abgeleiteten Signal vergleicht, und ein drittes Signal zu erzeugen, falls die benötigte Zahl von zu bedruckenden Blättern grösser als die Zahl der in dem Stapel vorhandenen Blätter ist.
4. Elektrografische Einrichtung nach Anspruch 3, dadurch gekennzeichnet, das eine Einrichtung (11) vorgesehen ist, welche eine Inbetriebnahme der elektrografischen Einrichtung verhindern kann, und dass diese Einrichtung (11) mit der Steuereinrichtung (1 bis 10, 18) verbunden ist und auf das dritte Signal anspricht.
5. Elektrografische Einrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Steuereinrichtung (1 bis 10, 18) einen Wählschalter (4) zur Einstellung eines Umwandlungsfaktors enthält, der als Parameter entsprechend der benutzten Papierart vorgesehen ist, und dass dieser Umwandlungsfaktor die Blattdicke beinhaltet, um aus dem ersten Signal entsprechend der Stapelhöhe den verbleibenden Vorrat ausgedrückt als genaue Anzahl der vorhandenen Blätter zur bestimmen.
6. Elektrografische Einrichtung nach Anspruch 3 oder 4, die mit einem Zähler zum Zählen der bei einem Durchlauf entfernten Zahl von Blättern versehen ist, dadurch gekennzeichnet, dass die Steuereinrichtung (1 bis 10, 18) eine Ausmusterungsschaltung (6) zum Festhalten erster Signale zu Zeitpunkten aufweist, die durch Zählstände des Zählers beim Beginn und beim Ende eines Kopierlaufs bestimmt werden, und dass die Steuereinrichtung (1 bis 10, 18) die Differenz der von den ersten Signalen bestimmten Höhe bei jedem Kopierlauf durch die zugeordnete Differenz der Zählstände dividiert, um aus dem letzten ersten Signal entsprechend der Stapelhöhe den restlichen Vorrat genau als Zahl der vorhandenen Blätter zu bestimmen.
7. Elektrografische Einrichtung nach einem der Ansprüche 3 bis 6, bei der die Stützfläche durch einen Hebemechanismus während des Betriebs derart angehoben wird, das die Oberseite des Stapels von Blättern immer auf einem konstanten Niveau gehalten wird, dadurch gekenzeichnet, das ein Potentiometer (13) als Detektoreinrichtung mit dem Hebemechanismus (12) gekoppelt ist und kontinuierlich die Lage des Hebemechanismus und damit die Stapelhöhe anzeigt.
EP82201042A 1981-08-27 1982-08-19 Verfahren zur Steuerung einer elektrographischen Einrichtung sowie derartige Einrichtung zur Ausführung des Verfahrens Expired EP0075974B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8103985 1981-08-27
NL8103985A NL8103985A (nl) 1981-08-27 1981-08-27 Werkwijze voor het besturen van een electrografische inrichting alsmede een dergelijke inrichting voor het ten uitvoer brengen van deze werkwijze.

Publications (2)

Publication Number Publication Date
EP0075974A1 EP0075974A1 (de) 1983-04-06
EP0075974B1 true EP0075974B1 (de) 1985-06-05

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EP82201042A Expired EP0075974B1 (de) 1981-08-27 1982-08-19 Verfahren zur Steuerung einer elektrographischen Einrichtung sowie derartige Einrichtung zur Ausführung des Verfahrens

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EP (1) EP0075974B1 (de)
JP (1) JPS5842066A (de)
DE (1) DE3264053D1 (de)
NL (1) NL8103985A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3546068A1 (de) * 1984-12-27 1986-07-03 Sharp K.K., Osaka Kopiergeraet

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4627715A (en) * 1983-08-31 1986-12-09 Ricoh Company, Ltd. Programmable copier
EP0139790A1 (de) * 1983-11-01 1985-05-08 Agfa-Gevaert N.V. Blattausgabevorrichtung
DE3618728A1 (de) * 1985-06-04 1986-12-04 Ricoh Co., Ltd., Tokio/Tokyo Steuerungseinrichtung fuer die papierzufuehrung in einem kopiergeraet
KR0159137B1 (ko) * 1994-12-21 1999-01-15 김광호 팩시밀리에서 기록지 잔량매수 표시방법
CN104669792A (zh) * 2015-03-17 2015-06-03 江文得 记录装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806242A (en) * 1971-12-30 1974-04-23 Xerox Corp Apparatus for regulating the operation of a device in accordance with the supply of material upon which the device operates

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4210319A (en) * 1978-06-28 1980-07-01 Xerox Corporation Copy set counter duplex tray
JPS5515143A (en) * 1978-07-18 1980-02-02 Ricoh Co Ltd Recorder
JPS55156963A (en) * 1979-05-26 1980-12-06 Ricoh Co Ltd Manual insertion feed control method in copying apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806242A (en) * 1971-12-30 1974-04-23 Xerox Corp Apparatus for regulating the operation of a device in accordance with the supply of material upon which the device operates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3546068A1 (de) * 1984-12-27 1986-07-03 Sharp K.K., Osaka Kopiergeraet

Also Published As

Publication number Publication date
EP0075974A1 (de) 1983-04-06
DE3264053D1 (en) 1985-07-11
JPS5842066A (ja) 1983-03-11
NL8103985A (nl) 1983-03-16

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