US3687542A - Control device for use in copying machines - Google Patents

Control device for use in copying machines Download PDF

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Publication number
US3687542A
US3687542A US42681A US3687542DA US3687542A US 3687542 A US3687542 A US 3687542A US 42681 A US42681 A US 42681A US 3687542D A US3687542D A US 3687542DA US 3687542 A US3687542 A US 3687542A
Authority
US
United States
Prior art keywords
paper
copying
switch
roll
micro
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
US42681A
Other languages
English (en)
Inventor
Ryuzo Suzuki
Sumihisa Sato
Shuji Okamoto
Akira Shinozaki
Tatsumi Doi
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Application granted granted Critical
Publication of US3687542A publication Critical patent/US3687542A/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
    • G03G15/6523—Cutting
    • 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
    • G03G15/6588—Apparatus which relate to the handling of copy material characterised by the copy material, e.g. postcards, large copies, multi-layered materials, coloured sheet material
    • G03G15/6594—Apparatus which relate to the handling of copy material characterised by the copy material, e.g. postcards, large copies, multi-layered materials, coloured sheet material characterised by the format or the thickness, e.g. endless forms
    • 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
    • G03G15/6597—Apparatus which relate to the handling of copy material the imaging being conformed directly on the copy material, e.g. using photosensitive copy material, dielectric copy material for electrostatic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/415—Unwinding
    • B65H2301/4152—Finishing unwinding process
    • B65H2301/41524—Detecting trailing edge
    • 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
    • G03G2215/00443—Copy medium
    • G03G2215/00518—Recording medium, e.g. photosensitive

Definitions

  • This invention relates to a control device for use in a copying machine, and more particularly, a control device which is capable of warning the run-out of copying paper stock and stopping the operation of a copying machine having copying paper roll set therein, when the supply of paper is exhausted.
  • FIG. 1 shows a built-in detector of exhaust of copying papers in a control device of a conventional copying machine
  • FIG. 2 diagrammatically shows a copying machine having a control device according to the present invention.
  • control device of this kind has been so arranged, as shown in FIG. 1, that copying paper roll loaded in a copying machine is passed without any slack through a pair of first rollers 2 and then through a pair of second rollers 3 located behind said first rollers and is cut to a predetermined size by means of a cutter 4 to be ready for copying.
  • a warning of paper exhaust is given by a lamp or a buzzer located on the control panel by means of a micro-switch to detect any slack of paper 1 passing between the first rollers and the second rollers when the tailend of paper leaves the first rollers.
  • This invention is intended to eliminate such defects as encountered in the conventional machine.
  • the present invention will now be explained in full detail with reference to the embodiment as shown in FIG. 2.
  • FIG. 2 showing an electrostatic copying machine, is copying paper; 11 is a guide roller; 12 is a pair of conveying rollers through which the copying paper is passed; 13 is a cutter for cutting the copying paper to a predetermined size; 14 is a means for effecting corona discharge; 15 is an exposure means to project original image (not illustrated) to copying paper, and 16 is a developing means to make copied image visible.
  • 26 is a warning device such as a lamp or a buzzer. 28 shows totally the part corresponding to the cutter 13, the corona discharger 14 and a lamp for exposure.
  • the keep relay 22 is energized to close the switch 27. This keep relay does not break the switch 27 immediately but keeps it in a closed position until one copying cycle is over, even when the switch 24 opens.
  • the switch 27 will open only when the copying cycle is completed.
  • the relay 23 closes the switch 24 and at the same time, opens the switch 25 while the relay circuit is kept closed, whereas it opens the switch 24 and closes the switch 25 when the relay circuit is kept open.
  • the control mechanism operates as follows:
  • the relay 22 is energized to close the.
  • the micro-switch 17 opens and then, the relay circuit including the relay 23 opens, too.
  • the relay 23 makes the switch 24 open and the switch 25 close.
  • the warning device 26 which lets an operator know that the copying paper remains scarce.
  • the switch 27 does not open immediately, as explained above, by the action of the keep-relay 22 but is kept closed until the copying cycle, under the operation of the micro-switch 17 is over.
  • the switch 27 opens. Even if the operator tries to make another copying by switching the print switch 21 on, the machine will not operate.
  • the micro-switch 17 is not in a location subjected to the movement of the copying paper that has already passed through the roller 2 as shown in FIG. 1 but in a location to reach directly the surface of the copying paper just unwound from the reel, that is, to be directly affected by the condition of the copying paper wound around the reel.
  • This specially designed location of the micro-switch enables the actuator 17' to come up as shown in FIG. 2, when the copying paper 10 begins to get unrolled and slide around the surface of the reel 18 which now has a small supply of copying paper.
  • the switch 25 when the micro-switch 17 opens, the switch 25 is closed by the action of relay 23. In other words, when the supply of the copying paper is exhausted, the warning device is actuated immediately after the detection by the microswitch.
  • the switch 25 may be incorporated in the keep-relay 22. In this embodiment, it is quite feasible that even when the micro-switch 17 detects the end part of the copying paper 10, it does not energize the warning device 26 until the copying cycle corresponding to the operation of the micro-switch 17 is over, through the keep action of the keep-relay 22.
  • this invention provides a control device to reduce troubles in the paper carrying portions, as compared with any conventional device.
  • a copying machine having a roll of copying papers self-contained therein, characterized by that the said machine is provided with a control device which comprises a micro-switch having an actuator being in contact with the copying paper withdrawn from the said roll at such a position of the paper conveying passage that it is directly affected by the condition of copying paper wound around the reel, the said micro-switch being a part of the control circuit by which the copying machine is permitted to complete at least the single copying copying cycle underway at the time of actuation of said micro-switch.
  • a copying machine having a roll of copying papers self-contained therein, characterized by that the said machine is provided with a control device which comprises a micro-switch having an actuator being in contact with the copying paper withdrawn from the said roll at such a position of the paper conveying passage that it is directly affected by the condition of copying paper wound around the reel, the said micro-switch being a part of the control circuit by which the copying machine is permitted to complete at least the single copying cycle underway at the time of actuation of said micro-switch, the said control circuit being provided with a warning device for indicating the exhaust of the copying paper by the actuation of the said microswitch.
  • a copying machine comprising a paper carrying roll, the end of the paper being slidable on said roll when a predetermined amount of paper has been removed therefrom, a micro-switch mounted adjacent said paper said micro-switch having an actuator mounted thereof for contacting the underside of said paper said actuator being movable from a first position defined by the paper before the paper has begun to slide on said roll in which the micro-switch is closed and a second position defined by the paper after it has begun to slide on said roll in which the micro-switch is opened by said actuator, a single roller positioned before said paper carrying roll such that the paper is permitted to slacken in the region of said actuator as the paper nears complete removal from said roll, a control circuit connected to said micro-switch, said control circuit being energized to permit the copying machine to operate when said actuator is in said first position and to de-energize the control circuit when said actuator is in tl 1e second position, means in said control for p rmitting e copying machine to complete at least
  • a copying machine having a roll of copy paper thereon, which paper is fed into said copying machine
  • the improvement comprising means for permitting slack to occur in said paper as it is moved between said roll and said copying machine when the paper nears the end of the roll, means for detecting the occurrence of slack in said paper, a normally energized control circuit connected to said slack detecting means, said control circuit being deenergized by said slack detecting means upon the occurence of slack in said paper, and means for permitting completion of at least the copying cycle the machine is in when the said control circuit is deenergized.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Fixing For Electrophotography (AREA)
  • Paper Feeding For Electrophotography (AREA)
US42681A 1969-06-05 1970-06-02 Control device for use in copying machines Expired - Lifetime US3687542A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4362669 1969-06-05

Publications (1)

Publication Number Publication Date
US3687542A true US3687542A (en) 1972-08-29

Family

ID=12669044

Family Applications (1)

Application Number Title Priority Date Filing Date
US42681A Expired - Lifetime US3687542A (en) 1969-06-05 1970-06-02 Control device for use in copying machines

Country Status (3)

Country Link
US (1) US3687542A (enrdf_load_stackoverflow)
DE (2) DE7020633U (enrdf_load_stackoverflow)
GB (1) GB1267130A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779641A (en) * 1972-11-01 1973-12-18 Eastman Kodak Co Self-activating cutter for strip material
US5107294A (en) * 1987-12-11 1992-04-21 Brother Kogyo Kabushiki Kaisha Image recording apparatus having detection unit for detecting malfunction of take-up roller
EP0757299A1 (en) * 1995-07-31 1997-02-05 Mita Industrial Co. Ltd. Image forming apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705907A (en) * 1951-06-26 1955-04-12 Photostat Corp Electric control circuit for a camera
US3045540A (en) * 1958-08-29 1962-07-24 Photostat Corp Automatic copying camera
US3065467A (en) * 1958-10-31 1962-11-20 Christie C Prevost Check receipting and depository apparatus
US3460891A (en) * 1966-09-26 1969-08-12 First Foto Inc Identification camera
US3467469A (en) * 1966-10-17 1969-09-16 Dennison Mfg Co Cover for photocopiers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705907A (en) * 1951-06-26 1955-04-12 Photostat Corp Electric control circuit for a camera
US3045540A (en) * 1958-08-29 1962-07-24 Photostat Corp Automatic copying camera
US3065467A (en) * 1958-10-31 1962-11-20 Christie C Prevost Check receipting and depository apparatus
US3460891A (en) * 1966-09-26 1969-08-12 First Foto Inc Identification camera
US3467469A (en) * 1966-10-17 1969-09-16 Dennison Mfg Co Cover for photocopiers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779641A (en) * 1972-11-01 1973-12-18 Eastman Kodak Co Self-activating cutter for strip material
US5107294A (en) * 1987-12-11 1992-04-21 Brother Kogyo Kabushiki Kaisha Image recording apparatus having detection unit for detecting malfunction of take-up roller
EP0757299A1 (en) * 1995-07-31 1997-02-05 Mita Industrial Co. Ltd. Image forming apparatus
US5708911A (en) * 1995-07-31 1998-01-13 Mita Industrial Co., Ltd. Image forming apparatus which detects rotation of a continuous sheet feeding reel and judges whether the end of the sheet is fixed to the feeding reel

Also Published As

Publication number Publication date
GB1267130A (enrdf_load_stackoverflow) 1972-03-15
DE7020633U (de) 1971-02-18
DE2027108A1 (de) 1970-12-10

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