US3859649A - Web sensing apparatus - Google Patents

Web sensing apparatus Download PDF

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Publication number
US3859649A
US3859649A US294193A US29419372A US3859649A US 3859649 A US3859649 A US 3859649A US 294193 A US294193 A US 294193A US 29419372 A US29419372 A US 29419372A US 3859649 A US3859649 A US 3859649A
Authority
US
United States
Prior art keywords
web
leaf
leaves
width
supporting surface
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 - Lifetime
Application number
US294193A
Other languages
English (en)
Inventor
William Frederick Slack
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.)
DYKE RESEARCH CORP VAN
VAN DYKE RESEARCH Corp
Original Assignee
DYKE RESEARCH CORP VAN
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 DYKE RESEARCH CORP VAN filed Critical DYKE RESEARCH CORP VAN
Priority to US294193A priority Critical patent/US3859649A/en
Priority to CA178,576A priority patent/CA1001255A/en
Priority to GB4014173A priority patent/GB1432596A/en
Priority to JP10334973A priority patent/JPS5424586B2/ja
Priority to DE19732348417 priority patent/DE2348417A1/de
Application granted granted Critical
Publication of US3859649A publication Critical patent/US3859649A/en
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
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6517—Apparatus for continuous web copy material of plain paper, e.g. supply rolls; Roll holders 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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/0204—Sensing transverse register of web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
    • B65H26/025—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs responsive to web breakage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S200/00—Electricity: circuit makers and breakers
    • Y10S200/11—Web or thread actuated

Definitions

  • ABSTRACT For use in a xerographic copier/duplicator machine in which paper is fed from a continuous roll and cut to the desired length within the machine, an arrangement for monitoring the movement of the paper and also for providing a visual display of the width of the roll. The paper is caused to continuously move past a sensing station constituting a number of deflectable leaves. A suitable logic circuit coupled to the leaves determines the width of the paper, and provides a warning signal when the paper is exhausted or when it is not being [56] Refer n Cit d properly fed.
  • the warning signal may be used to halt UNITED STATES PATENTS the operation of the machine so as to prevent jamming l,468,754 9/1923 Smith 271/57 other malfunct'on of the machme' 2,653,536 9/1953 Cooksey ZOO/61.18 5 Claims, 3 Drawing Figures /23 3
  • This invention relates to a web sensing apparatus, and more particularly to an arrangement for providing a signal indicative of the width of an elongated web and a warning signal under certain abnormal operating conditions.
  • a web is fed from a continuous roll over a predetermined path. Stations may be disposed along the path to guide the web and to perform various operations thereon. For example, in a xerographic copier/duplicator machine employing a continuous paper roll, the paper is withdrawn from the roll at a predetermined rate, guided toward a cutting mechanism and cut into sheets of predetermined lengths. The cut sheets are then fed to the xe rographic portion of the machine, where a tonerpattern corresponding to a desired image is disposed on the sheets and subsequently fused thereto.
  • web sensing apparatus comprising a web supporting plate having a web supporting surface.
  • the web supporting surface is provided with a central aperture and a plurality of laterally spaced pairs of apertures.
  • the apertures of each such pair are disposed on opposite sides of the central aperture.
  • a central web sensing leaf Disposed in the central aperture is a central web sensing leaf. Disposed in the apertures of each pair are corresponding pairs of web sensing leaves. Each of the aforementioned leaves extends through acorresponding aperture and protrudes outwardly from the web supporting surface. Each leaf is resiliently mounted for inward deflection upon engagement by a web disposed on the web supporting surface.
  • the lateral distance between the outer pair of leaves most laterally displaced from the central aperture is greater than the width of the widest web to be accommodated by said apparatus.
  • a plurality of switching elements is also provided, each element being responsive to the position of a corresponding leaf with a respect to the web supporting surface.
  • a logic circuit is coupled to the switching elements to provide a web width signal indicative of the width of an elongated web longitudinally disposed between the outer leaves.
  • the logic circuit also provides a warning signal when the central leaf is not inwardly deflected,
  • a web supporting plate 10 is provided with a number of rectangular apertures 11 therein.
  • the plate 10 which may preferably comprise a relatively rigid material such as steel or aluminum, is provided with a web supporting surface 12.
  • An elongated paper web 13 is disposed adjacent to, and preferably in contact with, the web supporting surface 12 of the web supporting plate 10.
  • the paper web 13 may be maintained adjacent the web supporting surface 12 by suitable web supporting and guiding rollers (not shown) and if desired by a web guide plate (not shown) situated parallel to and spaced slightly apart from the web supporting plate 10, the guide plate being provided with apertures aligned with the apertures 11, and the paper web 13 being fed between the web supporting plate 10 and the web guideplate.
  • the apertures 11 are arranged in pairs on opposite sides of a central aperture 14.
  • the aperture 14 need not be exactly centrally located, but may in fact be offset by a considerable amount without adversely affecting the operation of the apparatus.
  • Each of the web sensing leaves is shaped in the form of a relatively thin, rigid sector, and is resiliently mounted so that a slight inward force applied to the leaf will deflect the leaf into the correspondingrectangular aperture.
  • the leaves are formed of a suitable rigid material such as steel.
  • a typical one of the leaves such as, e.g., the central leaf C, comprises the end portion of a lever 15 pivotally mounted to a suitable support 16 by means of pivot pin or hinge l7.
  • a sensitive switch 18 Secured to the support 16, or to any other suitable support, is a sensitive switch 18 having an actuating button 19 protruding therefrom.
  • An internal spring (not shown) within the body of the switch 18 resiliently biases the lever 15, and thus the sensing leaf C, in a position such that the sensing leaf protrudes outwardly from the web supporting surface 12 of the web supporting plate through the corresponding aperture 14.
  • the leaf may be inwardly deflected merely by frictional contact with the side edge of the web 13 when the web is caused to move across the web supporting surface 12 in a direction as indicated by the arrows in FIG. 1 and 2.
  • Such frictional contact between the side of, e.g., the sensing leaf C and a side edge of the paper web 13 results in generation of a torque about the pivot pin or hinge 17, causing the leaf to rotate about the pivot pin or hinge and depressing the actuating button 19 of the switch 18 porting plate 12' in continuous or intermittent fashion, in a longitudinal direction as indicated by arrow 20, by means of a web drive system 21.
  • a web skew control system 22 responsive to a suitable signal may be provided to move portions of the paper web 13 laterally so as to maintain the web position along a predetermined path.
  • the paperweb 13 may, for example, be employed as the paper supply for a xerographic copier/duplicator machine, as previously described.
  • a xerographic copier/duplicator machine paper rolls of varying width corresponding to one desired dimension of a copy may be provided, the paper web 13 being cut to a desired length to establish the other desired dimension by means of a suitable cutting mechanism situated in the machine.
  • a particular copier/duplicator model may be capable of accommodating paper roll widths of 8%, 11 and 14 inches.-
  • the corresponding distances between the web sensing leaf pairs L,/R,, L /R, and L /R may preferably be on the order of 9, il and 14% inches respectively.
  • the copier/duplicator machine may be provided with a suitable mechanism for laterally centering thepaper web 13 with respect'to the web supporting plate 12, or alternatively, 'the web 13 may be manually centered.
  • a logic circuit 23 is coupled to the sensitive switches 18, 24, 25, 26, 27, 28 and 29 associated with each of the web sensing leaves C, L,, R,, L;,, R L and R respectively.
  • the logic circuit 23 provides a web width signal to the web width visual indicator display 30 on line 31, and a warning signal on line 32.
  • the warning signal is coupled to a Call Key Operator visual display 33,
  • the web 13 is caused to move across the web supfor generation of the web width indication signal on line 31 are summarized in Table I, wherein standard Boolean algebraic notation is employed.
  • the logic circuit 23 determines the presence of the aforementioned malfunction conditions as set forth in Boolean' algebraic form in Table II, and provides the aforementioned warning signal on line 32.
  • Web sensing apparatus comprising:
  • a web supporting plate having a web supporting surface with a central aperture and a plurality of laterally displaced pairs of apertures therein, the apertures of each pair being disposed on opposite sides of said central aperture;
  • each leaf extending through a corresponding one of said apertures and protruding outwardly from said web supporting surface, each leaf being resiliently mounted for inward deflection upon engagement by a web disposed on said web supporting surface;
  • the lateral distance between the outer pair of leaves most laterally displaced from said central aperture being greater than the width of the widest web to be accommodated by said apparatus;
  • each element being responsive to the position of a corresponding one of said leaves with respect to said web supporting surface
  • a logic circuit coupled to said switching elements for providing a web width signal indicative of the width of an elongated web longitudinally disposed on said plate between said outer leaves, and for providing a warning signal (i) when said central leafis not inwardly deflected, (ii) when only one leaf of any pair is inwardly deflected, and (iii) when either of said outer leaves is inwardly deflected.
  • Apparatus according to claim 1 further including web drive means for causing an elongated web to progress longitudinally across said web supporting surface, and control means responsive to said warning signal for modifying the operation of said web drive means.
  • control means responds to said warning signal to cause said web drive means to halt the movement of said web across said web supporting surface.
  • each leaf is pivotally mounted adjacent a corresponding one of said switching elements, so that a corresponding element is actuated by pivotal movement of a leaf upon engagement of said leaf by said web.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
US294193A 1972-10-02 1972-10-02 Web sensing apparatus Expired - Lifetime US3859649A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US294193A US3859649A (en) 1972-10-02 1972-10-02 Web sensing apparatus
CA178,576A CA1001255A (en) 1972-10-02 1973-08-10 Web sensing apparatus
GB4014173A GB1432596A (en) 1972-10-02 1973-08-24 Web sensing apparatus
JP10334973A JPS5424586B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-10-02 1973-09-14
DE19732348417 DE2348417A1 (de) 1972-10-02 1973-09-26 Vorrichtung zum abfuehlen einer bahn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US294193A US3859649A (en) 1972-10-02 1972-10-02 Web sensing apparatus

Publications (1)

Publication Number Publication Date
US3859649A true US3859649A (en) 1975-01-07

Family

ID=23132297

Family Applications (1)

Application Number Title Priority Date Filing Date
US294193A Expired - Lifetime US3859649A (en) 1972-10-02 1972-10-02 Web sensing apparatus

Country Status (5)

Country Link
US (1) US3859649A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5424586B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1001255A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2348417A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1432596A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111565A (en) * 1977-03-28 1978-09-05 Xerox Corporation Apparatus for sensing when paper utilized in a printer has been depleted
US4307957A (en) * 1978-04-11 1981-12-29 Minolta Camera Kabushiki Kaisha Paper jam detecting device for use in an electrophotographic copying machine
US4337659A (en) * 1979-06-29 1982-07-06 Burroughs Corporation Computer tape and reel signature for computer data file security
US4572652A (en) * 1978-11-29 1986-02-25 Sharp Kabushiki Kaisha Copying machine with audible indicator means
DE3713239A1 (de) * 1987-04-18 1988-10-27 Rotaprint Gmbh Kontrolleinrichtung fuer bahnenverarbeitende maschinen
US5237378A (en) * 1992-05-26 1993-08-17 Xerox Corporation Copier/printer employing a roll media feed apparatus and dual functions sensors
US6020907A (en) * 1997-12-18 2000-02-01 Eastman Kodak Company Simplified printer drive mechanism
US9931867B1 (en) * 2016-09-23 2018-04-03 Datamax-O'neil Corporation Method and system of determining a width of a printer ribbon
CN112093568A (zh) * 2020-10-19 2020-12-18 诸暨市澳速机械设计工作室 基于二级无缝衔接的薄膜褶皱检测设备
CN112249778A (zh) * 2020-10-19 2021-01-22 诸暨市澳速机械设计工作室 一种高精度的薄膜褶皱检测设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2787505B2 (ja) * 1989-11-10 1998-08-20 旭光学工業株式会社 ペーパージャム検出装置
US6119818A (en) * 1998-03-13 2000-09-19 Gustav Magenwirth Gmbh & Co. Disk brake

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1468754A (en) * 1921-08-04 1923-09-25 Miler Sawtrimmer Company Stop device for sheet feeders
US2653536A (en) * 1951-06-27 1953-09-29 Edwin G Koriath Method and apparatus for control of webs in web-handling machines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3181418A (en) * 1961-07-25 1965-05-04 Rca Corp Projection apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1468754A (en) * 1921-08-04 1923-09-25 Miler Sawtrimmer Company Stop device for sheet feeders
US2653536A (en) * 1951-06-27 1953-09-29 Edwin G Koriath Method and apparatus for control of webs in web-handling machines

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111565A (en) * 1977-03-28 1978-09-05 Xerox Corporation Apparatus for sensing when paper utilized in a printer has been depleted
US4307957A (en) * 1978-04-11 1981-12-29 Minolta Camera Kabushiki Kaisha Paper jam detecting device for use in an electrophotographic copying machine
US4572652A (en) * 1978-11-29 1986-02-25 Sharp Kabushiki Kaisha Copying machine with audible indicator means
US4337659A (en) * 1979-06-29 1982-07-06 Burroughs Corporation Computer tape and reel signature for computer data file security
DE3713239A1 (de) * 1987-04-18 1988-10-27 Rotaprint Gmbh Kontrolleinrichtung fuer bahnenverarbeitende maschinen
US5237378A (en) * 1992-05-26 1993-08-17 Xerox Corporation Copier/printer employing a roll media feed apparatus and dual functions sensors
US6020907A (en) * 1997-12-18 2000-02-01 Eastman Kodak Company Simplified printer drive mechanism
US9931867B1 (en) * 2016-09-23 2018-04-03 Datamax-O'neil Corporation Method and system of determining a width of a printer ribbon
CN112093568A (zh) * 2020-10-19 2020-12-18 诸暨市澳速机械设计工作室 基于二级无缝衔接的薄膜褶皱检测设备
CN112249778A (zh) * 2020-10-19 2021-01-22 诸暨市澳速机械设计工作室 一种高精度的薄膜褶皱检测设备

Also Published As

Publication number Publication date
JPS5424586B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1979-08-22
GB1432596A (en) 1976-04-22
DE2348417A1 (de) 1974-04-18
JPS4973143A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-07-15
CA1001255A (en) 1976-12-07

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