US3900740A - Control device of copying machine - Google Patents

Control device of copying machine Download PDF

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Publication number
US3900740A
US3900740A US440246A US44024674A US3900740A US 3900740 A US3900740 A US 3900740A US 440246 A US440246 A US 440246A US 44024674 A US44024674 A US 44024674A US 3900740 A US3900740 A US 3900740A
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US
United States
Prior art keywords
switch
state
machine
indicator
energized
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
US440246A
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English (en)
Inventor
Hideo Akimoto
Hiromitsu Kamiyama
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
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Publication date
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Publication of US3900740A publication Critical patent/US3900740A/en
Assigned to KONICA CORPORATION reassignment KONICA CORPORATION RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: KONISAIROKU PHOTO INDUSTRY CO., LTD.
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control

Definitions

  • ABSTRACT The invention is directed to an improved control device for a copying machine which permits continuance of the copying operation, even when an indicator shows that machine operation should be stopped for replacing expendables (such as a developer), coupled with a manually releasable stop signal causing means which automatically stops the machine operation when the machine has been operated for a predetermined number of cycles, after which the indicator becomes operable.
  • expendables such as a developer
  • the machine comprises a switch movable from a first state to a second state when the machine has been operated for the predetermined number of cycles, the indicator which is operable in the second state and inoperable in the first state, the stop signal causing means for generating signals for stopping the machine operation, said stop signal causing means being operable in the second state and inoperable in the first state, and means for making said stop signal causing means inoperable when said switch is in the second state without changing the second state to the first sta te 5 Claims, 2 Drawing Figures CONTROL DEVICE ()F COPYING MACHINE This invention relates to a control device for copiers.
  • the electrophotographic copiers employ expendables such as transfer papers and developing powders and parts to be supplemented or renewed after every definite number of cycles of copying operation. And it is common practice to automatically stop theoperation of the copiers after every definite number of operation cycles for the purpose of reliable supplementing and replacing operations. However, if the copiers remain to stop for the supplementing and replacing operations, inconvenience is brought about in copy work.
  • an object of this invention is to over come inconvenience and disadvantage in the conventional copiers.
  • Another object of this invention is to provide a copier which allows reliable supply of expendables and to allow easy copy work free from troubles.
  • FIG. I shows an electrical circuit of a device according to this invention.
  • FIG. 2 shows an electrical circuit of another device according to this invention.
  • D-C voltage E is impressed across terminals A and B.
  • MS is a main switch, M5, is a microswitch which is actuated by a copy counter provided in a copier when the counter has reached at a predetermined requiring supply of cxpendablcs or replacement of short life parts.
  • RL, and RL, are relays.
  • FL is an indicator lamp energized through the microswitch M5,
  • R is a resistance
  • C is a electrolytic capacitor
  • D is diodes respectively connected in parallel with relays RL, and RL
  • C is a terminal for producing a signal to stop the copier
  • S is a normally-open switch that will be closed by energized relay RL
  • S is a normally-open switch that will be closed by energized relay RL
  • the copied number may be counted by a counter which comprises a ratchetfeed mechanism as known. Until 5,000 times is counted, the microswitch MS, maintains the state of being connected to the contact D as shown in FIG. I, and the capacitor C, is charged to the voltage E. And further, the relays RL, and RL, are not operated. Accordingly, no output appears at the terminal C and there is no need to replace the parts and supply the ex pendables.
  • a cam which is rotated by the ratchet-feed machanism of the counter causes the microswitch MS, to be changed from the point D to point F, whereby causing the indicator lamp Plto light to make indication, and then the relay RL, is energized.
  • Energization of the reley RL causes the switch S, to be closed. Closure of the switch S, permits the capacitor C, to be discharged and the relay RL is energized.
  • Energization of the relay RL causes the switch S to be closed. Thereby, the relay RL- is self-maintained so that output signal appears at the terminal C and said signal causes the copier to be stopped for the supply or replacement after 5,000 times has finished.
  • the microswitch MS When the supply or replacement is carried out, the microswitch MS, is reset by known mechanism. After the resetting of switch M5,, main switch MS is opened, and thereby relay RL is deenergized so as to open switch 5 Then, when the main switch is reclosed, the copier is allowed to operate for next 5,000 operation cycles.
  • Opening of a main switch MS deenergize relays RL,, RL and thereby switches 5,, 5- are opened. Since a microswitch MS, is held to connect a contact F, condenser C, is discharged through resistor R. Therefore, when the main switch is reclosed, an indicator lamp PL is again lighted, so an operator can still note the finishing of 5,000 operation cycles. Although relay RL, is again energized to close switch 5,, relay RL is not energized because condenser C, has been discharged. Accordingly, once opened switch 5 remains to open and no stop signal appears.
  • a relay RL- is used to operate a switch 5 but other electromagnetic device can be used instead of the relay.
  • electromagnetic device which is adapted to close a switch 52 when magnetic force is induced in the device and has a reset knob for manually opening the switch.
  • a microswitch M5 is provided in addition to the microswitch M5,.
  • the microswitch MS switches at the time of finishing of first predetermined operation cycles, for example 5,000 cycles, and the microswitch MS switches at the time of finishing of another second predetermined operation cycles, for example 10,000 cycles.
  • the microswitch MS will be changed from the point D to the point F; the microswitch MS, is in contact with the point Gv Indication of replacement of short-life parts or supply of expendables is done by the indicator lamp PL as same manner as in FIG. I.
  • the microswitch M5 is changed to the point H by another cam provided in the copier which is rotated by a ratchet-feed mechanism.
  • the needs of the supply or replacement is indicated by an indicator lamp PL and a copier is stopped as same manner as in first embodiment.
  • the copier will not only be able to operate for next 10,000 operation cycles by the supply or replacement but also to operate without the supply or replacement by the operation of the main switch MS or a reset knob as mentioned above.
  • a control device for a copying machine comprising:
  • a switch movable from a first state to a second state when the copying machine has been operated for a predetermined number of cycles
  • an indicator for indicating that the machine has been operated for said predetermined cycles said indicator being inoperable when said switch is in said first state and operable when said switch is in said second state
  • stop signal causing means for generating signals for stopping the operation of the machine said stop signal causing means being inoperable when said switch is in said first state and operable when said switch is in said second state;
  • a control device for a copying machine comprising:
  • a switch movable from a first state to a second state when the machine has been operated for a predetermined number of cycles
  • an indicator for indicating that the machine has been operated for said predetermined cycles said indicator being inoperable in the first state and operable in the second state;
  • stop signal causing means for generating signals for stopping the operation of the machine
  • a condenser adapted to be electrically chargable in the first state and dischargable through the electromagnetic means when the switch is moved from the first state to the second state, said condenser energizing the electromagnetic means when discharged after being charged in the first state whereby the electromagnetic means operates the stop signal causing means in the second state whereby the machine operation is automatically stopped;
  • deenergizing means for deenergizing the electromagnetic means without changing the state of the switch even when said energizing means is operable.
  • a control device for a copying machine comprising:
  • a first switch being a main switch of the machine
  • a second switch connected to the first switch in series, said second switch being movable from a first state to a second state when the machine has been operated for a predetermined number of cycles;
  • an indicator for indicating that the machine has been operated for said cycles being connected to the first switch through the second switch in the second state in series;
  • first means for electromagnetically controlling the third switch said first means being connected in parallel with the indicator and adapted to close said third switch when energized;
  • second means for electromagnetically controlling the fourth switch said second means being connected in parallel with the condenser through the third switch in the closed position thereof and also connected to the first switch in series through the fourth switch in the closed position thereof and adapted to close the fourth switch when energized; whereby, when the third switch is closed, after the condenser is charged, the second means is ener gized by discharging the condenser so as to close the fourth switch, said second means being kept energized through the closed fourth switch thereby maintaining the fourth switch closed; and
  • a third means for generating signals for stopping the operation of the machine without opening the first switch said third means comprising the fourth switch and being adapted to be operable in the closed position of the fourth switch and inoperable in the opened position of the fourth switch.
  • a control device for a copying machine according to claim 3 wherein the device further comprises a resistor connected in parallel with the condenser.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
US440246A 1973-02-08 1974-02-06 Control device of copying machine Expired - Lifetime US3900740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973016897U JPS5519935Y2 (enrdf_load_html_response) 1973-02-08 1973-02-08

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US3900740A true US3900740A (en) 1975-08-19

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US440246A Expired - Lifetime US3900740A (en) 1973-02-08 1974-02-06 Control device of copying machine

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US (1) US3900740A (enrdf_load_html_response)
JP (1) JPS5519935Y2 (enrdf_load_html_response)
DE (1) DE2405662A1 (enrdf_load_html_response)
GB (1) GB1411933A (enrdf_load_html_response)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087661A (en) * 1975-10-21 1978-05-02 Gustav Bergson Switch enclosure for hazardous environment having cover removal interlocking defeater assembly
US4128756A (en) * 1976-05-31 1978-12-05 Omron Tateisi Electronics Co. Count control apparatus
US4176941A (en) * 1978-02-27 1979-12-04 Van Dyk Research Corporation Malfunction display system for electrophotographic copying machines
US4551000A (en) * 1981-04-01 1985-11-05 Canon Kabushiki Kaisha Process kit and an image forming apparatus using the same
FR2575841A1 (fr) * 1977-03-02 1986-07-11 Canon Kk Procede et appareil de formation d'images pour machine de reprographie
US4771313A (en) * 1982-09-30 1988-09-13 Canon Kabushiki Kaisha Service life indicator for a process cartridge
US5192971A (en) * 1977-03-02 1993-03-09 Canon Kabushiki Kaisha Image forming apparatus with image forming interruption capabilities

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3062095A (en) * 1959-07-02 1962-11-06 Xerox Corp Projector optical scanning system
US3181420A (en) * 1963-05-23 1965-05-04 American Photocopy Equip Co Copying machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3062095A (en) * 1959-07-02 1962-11-06 Xerox Corp Projector optical scanning system
US3181420A (en) * 1963-05-23 1965-05-04 American Photocopy Equip Co Copying machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087661A (en) * 1975-10-21 1978-05-02 Gustav Bergson Switch enclosure for hazardous environment having cover removal interlocking defeater assembly
US4128756A (en) * 1976-05-31 1978-12-05 Omron Tateisi Electronics Co. Count control apparatus
FR2575841A1 (fr) * 1977-03-02 1986-07-11 Canon Kk Procede et appareil de formation d'images pour machine de reprographie
US5192971A (en) * 1977-03-02 1993-03-09 Canon Kabushiki Kaisha Image forming apparatus with image forming interruption capabilities
US4176941A (en) * 1978-02-27 1979-12-04 Van Dyk Research Corporation Malfunction display system for electrophotographic copying machines
US4551000A (en) * 1981-04-01 1985-11-05 Canon Kabushiki Kaisha Process kit and an image forming apparatus using the same
US4771313A (en) * 1982-09-30 1988-09-13 Canon Kabushiki Kaisha Service life indicator for a process cartridge

Also Published As

Publication number Publication date
DE2405662A1 (de) 1974-08-15
GB1411933A (en) 1975-10-29
JPS49118349U (enrdf_load_html_response) 1974-10-09
JPS5519935Y2 (enrdf_load_html_response) 1980-05-13

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AS Assignment

Owner name: KONICA CORPORATION, JAPAN

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:KONISAIROKU PHOTO INDUSTRY CO., LTD.;REEL/FRAME:005159/0302

Effective date: 19871021