EP0853258A3 - A sheet transport system - Google Patents

A sheet transport system Download PDF

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Publication number
EP0853258A3
EP0853258A3 EP98300165A EP98300165A EP0853258A3 EP 0853258 A3 EP0853258 A3 EP 0853258A3 EP 98300165 A EP98300165 A EP 98300165A EP 98300165 A EP98300165 A EP 98300165A EP 0853258 A3 EP0853258 A3 EP 0853258A3
Authority
EP
European Patent Office
Prior art keywords
voltage response
paper weight
sensor
range
given
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.)
Withdrawn
Application number
EP98300165A
Other languages
German (de)
French (fr)
Other versions
EP0853258A2 (en
Inventor
Paul Hansen
Sheldon F. Raizes
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.)
Xerox Corp
Original Assignee
Xerox Corp
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
Priority claimed from US08/782,323 external-priority patent/US5836580A/en
Priority claimed from US08/782,325 external-priority patent/US5769407A/en
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of EP0853258A2 publication Critical patent/EP0853258A2/en
Publication of EP0853258A3 publication Critical patent/EP0853258A3/en
Withdrawn legal-status Critical Current

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
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5029—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the copy material characteristics, e.g. weight, thickness
    • 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
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/12—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to double feed or separation
    • B65H7/125—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to double feed or separation sensing the double feed or separation without contacting the articles
    • 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
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/14—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors by photoelectric feelers or detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/13—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/10—Mass, e.g. mass flow rate; Weight; Inertia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/70—Electrical or magnetic properties, e.g. electric power or current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/41—Photoelectric detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/41—Photoelectric detectors
    • B65H2553/412—Photoelectric detectors in barrier arrangements, i.e. emitter facing a receptor element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20—Calculating means; Controlling methods
    • B65H2557/23—Recording or storing data
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/60—Details of processes or procedures
    • B65H2557/64—Details of processes or procedures for detecting type or properties of handled material
    • 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
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535—Stable handling of copy medium
    • G03G2215/00717—Detection of physical properties
    • G03G2215/00738—Detection of physical properties of sheet thickness or rigidity
    • 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
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535—Stable handling of copy medium
    • G03G2215/00717—Detection of physical properties
    • G03G2215/00742—Detection of physical properties of sheet weight

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

A sheet feed sensor (116) is designed to have a first given voltage response condition for sensing sheets within a first range of paper weight values and a second given voltage response condition for sensing sheets within a second range of paper weight values. A current value supplied to the emitter (118) of the sensor (116) can be controlled to provide the desired voltage response or a resistance in a phototransistor collector circuit can be varied to provide the desired voltage response condition. If the first range of paper weight values is lighter than the second range of paper weight values, the sensor (116), when in the first given voltage response condition, will have a voltage response, when sensing a sheet of a given paper weight, which is higher than the voltage response when the same sensor senses a sheet of the same paper weight, when the sensor (116) is in the second given voltage response condition. This way the difference between a voltage response at the phototransistor for a single sheet and a voltage response for two sheets, each of the same paper weight as the single sheet, fed through the sensor is large enough throughout all paper weight ranges to obviate the possibility of voltage response overlap.
EP98300165A 1997-01-13 1998-01-12 A sheet transport system Withdrawn EP0853258A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US782323 1985-09-30
US782325 1997-01-13
US08/782,323 US5836580A (en) 1997-01-13 1997-01-13 Single tray and multi tray misfeed detector with voltage response adjustment
US08/782,325 US5769407A (en) 1997-01-13 1997-01-13 Misfeed detector with voltage response adjustment

Publications (2)

Publication Number Publication Date
EP0853258A2 EP0853258A2 (en) 1998-07-15
EP0853258A3 true EP0853258A3 (en) 1998-11-04

Family

ID=27119980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98300165A Withdrawn EP0853258A3 (en) 1997-01-13 1998-01-12 A sheet transport system

Country Status (2)

Country Link
EP (1) EP0853258A3 (en)
JP (1) JPH10194523A (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57124377A (en) * 1981-01-24 1982-08-03 Ricoh Co Ltd Detecting method for overlapped transfer paper delivery
JPS57124366A (en) * 1981-01-24 1982-08-03 Ricoh Co Ltd Processing method for transfer paper
EP0103153A2 (en) * 1982-08-17 1984-03-21 Agfa-Gevaert AG Detecting device for two or several overlapping film sheets
EP0149699A1 (en) * 1984-01-24 1985-07-31 Komori Printing Machinery Co., Ltd. Double sheet detection method and apparatus of sheet-fed rotary press
JPS60177206A (en) * 1984-02-24 1985-09-11 Komori Printing Mach Co Ltd Double sheet detector for sheet-fed rotary press
JPS6151444A (en) * 1984-08-17 1986-03-13 Tokyo Koku Keiki Kk Double-feed error detector of printing machine
EP0342647A2 (en) * 1988-05-18 1989-11-23 Siemens Nixdorf Informationssysteme Aktiengesellschaft Method for examining sheet-like objects
EP0404287A2 (en) * 1989-06-19 1990-12-27 Komori Corporation Sheet overlapping detecting method
US5138178A (en) * 1990-12-17 1992-08-11 Xerox Corporation Photoelectric paper basis weight sensor
US5503382A (en) * 1995-02-13 1996-04-02 Xerox Corporation Misfeed detector for multi-tray and intermediate tray sheet feeders
US5586755A (en) * 1995-02-13 1996-12-24 Xerox Corporation Misfeed detector for a stack of different weight sheets

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57124377A (en) * 1981-01-24 1982-08-03 Ricoh Co Ltd Detecting method for overlapped transfer paper delivery
JPS57124366A (en) * 1981-01-24 1982-08-03 Ricoh Co Ltd Processing method for transfer paper
EP0103153A2 (en) * 1982-08-17 1984-03-21 Agfa-Gevaert AG Detecting device for two or several overlapping film sheets
EP0149699A1 (en) * 1984-01-24 1985-07-31 Komori Printing Machinery Co., Ltd. Double sheet detection method and apparatus of sheet-fed rotary press
JPS60177206A (en) * 1984-02-24 1985-09-11 Komori Printing Mach Co Ltd Double sheet detector for sheet-fed rotary press
JPS6151444A (en) * 1984-08-17 1986-03-13 Tokyo Koku Keiki Kk Double-feed error detector of printing machine
EP0342647A2 (en) * 1988-05-18 1989-11-23 Siemens Nixdorf Informationssysteme Aktiengesellschaft Method for examining sheet-like objects
EP0404287A2 (en) * 1989-06-19 1990-12-27 Komori Corporation Sheet overlapping detecting method
US5138178A (en) * 1990-12-17 1992-08-11 Xerox Corporation Photoelectric paper basis weight sensor
US5503382A (en) * 1995-02-13 1996-04-02 Xerox Corporation Misfeed detector for multi-tray and intermediate tray sheet feeders
US5586755A (en) * 1995-02-13 1996-12-24 Xerox Corporation Misfeed detector for a stack of different weight sheets

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 221 (P - 153) 5 November 1982 (1982-11-05) *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 026 (P - 425) 31 January 1986 (1986-01-31) *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 211 (M - 501) 24 July 1986 (1986-07-24) *

Also Published As

Publication number Publication date
JPH10194523A (en) 1998-07-28
EP0853258A2 (en) 1998-07-15

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