EP0191591A3 - Electro-optic sensor - Google Patents

Electro-optic sensor Download PDF

Info

Publication number
EP0191591A3
EP0191591A3 EP86300756A EP86300756A EP0191591A3 EP 0191591 A3 EP0191591 A3 EP 0191591A3 EP 86300756 A EP86300756 A EP 86300756A EP 86300756 A EP86300756 A EP 86300756A EP 0191591 A3 EP0191591 A3 EP 0191591A3
Authority
EP
European Patent Office
Prior art keywords
light
electro
sheet
waveguide
optic sensor
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Withdrawn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
EP86300756A
Other languages
German (de)
French (fr)
Other versions
EP0191591A2 (en
Inventor
Josef Emanuel Jedlicka
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
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of EP0191591A2 publication Critical patent/EP0191591A2/en
Publication of EP0191591A3 publication Critical patent/EP0191591A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/65Apparatus which relate to the handling of copy material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H43/00Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
    • B65H43/08Photoelectric devices
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00Apparatus for electrophotographic processes
    • G03G2215/00362Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00367The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
    • G03G2215/00371General use over the entire feeding path
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00Apparatus for electrophotographic processes
    • G03G2215/00362Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535Stable handling of copy medium
    • G03G2215/00611Detector details, e.g. optical detector
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00Apparatus for electrophotographic processes
    • G03G2215/00362Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535Stable handling of copy medium
    • G03G2215/00611Detector details, e.g. optical detector
    • G03G2215/00616Optical detector
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00Apparatus for electrophotographic processes
    • G03G2215/00362Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535Stable handling of copy medium
    • G03G2215/00717Detection of physical properties
    • G03G2215/00721Detection of physical properties of sheet position

Abstract

This invention relates to a sheet sensor comprising a light source (62) coupled to an optical waveguide (60) arranged to direct light at the path of the sheet (54). At least a second waveguide is arranged to receive light after transmission through, or reflection from, the light. A transducer converts the received light into an electrical signal which indicates the presence or the absence of a sheet in the path. Both the light source and the «transmission» waveguide are secured to each other and to a common substrate (64).
EP86300756A 1985-02-11 1986-02-05 Electro-optic sensor Withdrawn EP0191591A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US70025285A 1985-02-11 1985-02-11
US700252 1996-08-20

Publications (2)

Publication Number Publication Date
EP0191591A2 EP0191591A2 (en) 1986-08-20
EP0191591A3 true EP0191591A3 (en) 1987-02-04

Family

ID=24812788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86300756A Withdrawn EP0191591A3 (en) 1985-02-11 1986-02-05 Electro-optic sensor

Country Status (2)

Country Link
EP (1) EP0191591A3 (en)
JP (1) JPS61186886A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3006541A1 (en) * 1979-02-22 1980-09-04 Konishiroku Photo Ind PHOTODETECTOR DEVICE FOR DETERMINING THE EXISTENCE OF A MOVABLE BODY
DE2807375B2 (en) * 1977-02-22 1981-01-15 Western Electric Co., Inc., New York, N.Y. (V.St.A.) Optical coupling arrangement
DE3206069A1 (en) * 1981-02-23 1982-09-09 Omron Tateisi Electronics Co., Kyoto Light transmitting and receiving device
US4432599A (en) * 1981-03-27 1984-02-21 Sperry Corporation Fiber optic differential sensor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5861407A (en) * 1981-10-07 1983-04-12 Matsushita Electric Ind Co Ltd Reflection type optical coupler
JPS5883873A (en) * 1981-11-13 1983-05-19 Fuji Xerox Co Ltd Paper detection display for copying machine
JPS59128507A (en) * 1983-01-14 1984-07-24 Matsushita Electric Ind Co Ltd Photoconnector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2807375B2 (en) * 1977-02-22 1981-01-15 Western Electric Co., Inc., New York, N.Y. (V.St.A.) Optical coupling arrangement
DE3006541A1 (en) * 1979-02-22 1980-09-04 Konishiroku Photo Ind PHOTODETECTOR DEVICE FOR DETERMINING THE EXISTENCE OF A MOVABLE BODY
DE3206069A1 (en) * 1981-02-23 1982-09-09 Omron Tateisi Electronics Co., Kyoto Light transmitting and receiving device
US4432599A (en) * 1981-03-27 1984-02-21 Sperry Corporation Fiber optic differential sensor

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
INSTRUMENTS & CONTROL SYSTEMS, vol. 56, no. 9, September 1983, pages 57-58, Radnor, Pennsylvania, US; D.A. KROHN "Inside fiber optic sensors" *
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 150 (P-207)[1295], 30th June 1983; & JP - A - 58 61407 (MATSUSHITA DENKI SANGYO) 12-04-1983 *
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 180 (P-215)[1325], 9th August 1983; & JP - A - 58 83873 (FUJI XEROX) 19-05-1983 *
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 257 (P-316)[1694], 24th November 1984; & JP - A - 59 128 507 (MATSUSHITA DENKI SANGYO) 24-07-1984 *
XEROX DISCLOSURE JOURNAL, vol. 5, no. 2, March/April 1980; pages 191-192; P.R. SPENSOR "Paper sensor" *

Also Published As

Publication number Publication date
EP0191591A2 (en) 1986-08-20
JPS61186886A (en) 1986-08-20

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Inventor name: JEDLICKA, JOSEF EMANUEL