US3753466A - Automatic fire extinguisher in electrophotographic copying machine or the like - Google Patents

Automatic fire extinguisher in electrophotographic copying machine or the like Download PDF

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Publication number
US3753466A
US3753466A US00204068A US3753466DA US3753466A US 3753466 A US3753466 A US 3753466A US 00204068 A US00204068 A US 00204068A US 3753466D A US3753466D A US 3753466DA US 3753466 A US3753466 A US 3753466A
Authority
US
United States
Prior art keywords
fire
fire extinguishing
extinguishing gas
heat treating
treating section
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
US00204068A
Other languages
English (en)
Inventor
K Uematsu
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox Co Ltd
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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Application granted granted Critical
Publication of US3753466A publication Critical patent/US3753466A/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
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2007—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using radiant heat, e.g. infrared lamps, microwave heaters

Definitions

  • An automatic fire extinguishing device for use in an electrophotographic copying machine or the like having a heat treating section including inlet and outlet portions through which flammable material is passed and heat treated, the tire extinguishing device including means for detecting a fire in the heat treating section, a source of fire extinguishing gas, means responsive to the fire detecting means for releasing fire extinguishing gas upon detection of a fire, nozzle means connected to the source of fire extinguishing gas for spraying upon outbreak of a fire, the fire extinguishing gas in the form of a curtain so as to form an air curtain of the extinguishing gas at at least one of the inlet and outlet portions of the heat treating section to prevent the inflow of air therethrough, and an exhaust system responsive to the fire detecting means for sucking up the fire extinguishing gas after it has performed its function as an air curtain, so as to let it cover the source of the fire, and for discharging hot air in the heat treating section to the outside of the
  • a source 15 of fire extinguishing gas such as a bomb filled with CO, gas, for example, is disposed at a suitable position in the copying machine.
  • a pipe 16 is connected to the bomb through a solenoid valve 24, the pipe 16 being bifurcated as shown, with the respective end portions 16a and 16b being adjacent the inlet portion A of the heat fixing section at the upper and lower edges thereof respectively.
  • Each end portion 16a and 16b is connected 'to a nozzle 17.
  • Each nozzle 17 is disposed horizontally and perpendicularly to the paper sheet advancing direction as will be described in more detail hereinafter with respect to FIG. 2 where each nozzle has both ends closed and a slit 18 formed longitudinally therein.
  • An automatic fire extinguishing device for use in an electrophotographic copying machine or the like having a heat treating section including inlet and outlet portions through which flammable material is passed and heat treated, said fire extinguishing device comprising:
  • nozzle means connected to said source of fire extinguishing gas for spraying upon outbreak of a fire, the fire extinguishing gas in the form of a curtain so as to form an air curtain of said extinguishing gas at at least one of said inlet and outlet portions of the heat treating section to prevent the inflow of air therethrough, said nozzle means comprising an elongated tube having a slit disposed longitudinally therein, said tubes being oriented across the width of said flammable material to form said air curtain and a pair of plates disposed at the opposite sides of said slit to prevent turbulence of the sprayed fire extinguishing gas; and
  • exhaust means responsive to said fire detecting means for sucking up the fire extinguishing gas after it has performed its function as an air curtain so as to let it cover the source of the fire, and for discharging hot air in the heat treating section to the outside of the machine.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)
  • Fire Alarms (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
US00204068A 1970-12-29 1971-12-02 Automatic fire extinguisher in electrophotographic copying machine or the like Expired - Lifetime US3753466A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45130482A JPS5013662B1 (enExample) 1970-12-29 1970-12-29

Publications (1)

Publication Number Publication Date
US3753466A true US3753466A (en) 1973-08-21

Family

ID=15035296

Family Applications (1)

Application Number Title Priority Date Filing Date
US00204068A Expired - Lifetime US3753466A (en) 1970-12-29 1971-12-02 Automatic fire extinguisher in electrophotographic copying machine or the like

Country Status (4)

Country Link
US (1) US3753466A (enExample)
JP (1) JPS5013662B1 (enExample)
DE (1) DE2161624A1 (enExample)
GB (1) GB1334579A (enExample)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205037A (en) * 1987-04-24 1988-11-30 Faini Spa Fire-extenguishing device for electrical equipment having flammable components
WO1991003325A1 (en) * 1989-08-30 1991-03-21 Vitronics Corporation Apparatus for cleaning mechanical devices using terpene compounds
US5240018A (en) * 1989-08-30 1993-08-31 Vitronics Corporation Apparatus for cleaning mechanical devices using terpene compounds
US6003608A (en) * 1997-12-08 1999-12-21 Fail Safe Safety Systems, Inc. Fire suppression system for an enclosed space
US6125759A (en) * 1997-11-11 2000-10-03 Oxy-Dry Corporation Printing press with infrared dryer safety system
WO2008015243A1 (de) * 2006-08-01 2008-02-07 OCé PRINTING SYSTEMS GMBH Vorrichtung und verfahren zum erkennen eines brandes in einer fixiereinheit eines druckers oder kopierers
US20120285708A1 (en) * 2011-05-11 2012-11-15 Bildstein Carl R Fire enclosure and safety system for an inkjet printer using a radiant dryer unit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2321837C2 (de) * 1973-04-30 1982-03-11 Rank Xerox Ltd., London Vorrichtung zur Verhinderung des Ausbreitens eines Feuers das in einer Hitzefixierstation einer elektrophotographischen Kopiermaschine oder dergleichen entsteht
DE2510191C2 (de) * 1975-03-08 1977-04-28 Bergwerksverband Gmbh Pneumatische fuellstandsmessung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1972437A (en) * 1931-11-06 1934-09-04 Technova Patents Corp Fire extinguisher for films
US2532949A (en) * 1947-12-04 1950-12-05 Byron B Savage Method and means for extinguishing film fire
US2586797A (en) * 1947-06-21 1952-02-26 Westinghouse Electric Corp Fire protection system
US3163108A (en) * 1963-06-25 1964-12-29 Armstrong Cork Co Fire protection system for rotary printing press
US3403733A (en) * 1966-04-27 1968-10-01 Navy Usa Electronics cabinet with fire extinguishing apparatus
US3507333A (en) * 1967-10-23 1970-04-21 Xerox Corp Fire prevention system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1972437A (en) * 1931-11-06 1934-09-04 Technova Patents Corp Fire extinguisher for films
US2586797A (en) * 1947-06-21 1952-02-26 Westinghouse Electric Corp Fire protection system
US2532949A (en) * 1947-12-04 1950-12-05 Byron B Savage Method and means for extinguishing film fire
US3163108A (en) * 1963-06-25 1964-12-29 Armstrong Cork Co Fire protection system for rotary printing press
US3403733A (en) * 1966-04-27 1968-10-01 Navy Usa Electronics cabinet with fire extinguishing apparatus
US3507333A (en) * 1967-10-23 1970-04-21 Xerox Corp Fire prevention system

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205037A (en) * 1987-04-24 1988-11-30 Faini Spa Fire-extenguishing device for electrical equipment having flammable components
WO1991003325A1 (en) * 1989-08-30 1991-03-21 Vitronics Corporation Apparatus for cleaning mechanical devices using terpene compounds
US5103846A (en) * 1989-08-30 1992-04-14 Vitronics Corporation Apparatus for cleaning mechanical devices using terpene compounds
US5240018A (en) * 1989-08-30 1993-08-31 Vitronics Corporation Apparatus for cleaning mechanical devices using terpene compounds
US6125759A (en) * 1997-11-11 2000-10-03 Oxy-Dry Corporation Printing press with infrared dryer safety system
US6003608A (en) * 1997-12-08 1999-12-21 Fail Safe Safety Systems, Inc. Fire suppression system for an enclosed space
WO2008015243A1 (de) * 2006-08-01 2008-02-07 OCé PRINTING SYSTEMS GMBH Vorrichtung und verfahren zum erkennen eines brandes in einer fixiereinheit eines druckers oder kopierers
US20090310987A1 (en) * 2006-08-01 2009-12-17 OCé PRINTING SYSTEMS GMBH System and method for detecting a fire in a fixer unit of a printer or copier
US7873288B2 (en) 2006-08-01 2011-01-18 Oce Printing Systems Gmbh System and method for detecting a fire in a fixer unit of a printer or copier
US20120285708A1 (en) * 2011-05-11 2012-11-15 Bildstein Carl R Fire enclosure and safety system for an inkjet printer using a radiant dryer unit
US9433809B2 (en) * 2011-05-11 2016-09-06 Ricoh Company, Ltd. Fire enclosure and safety system for an inkjet printer using a radiant dryer unit
US9656493B2 (en) * 2011-05-11 2017-05-23 Ricoh Company, Ltd. Fire control and containment in production printing systems with radiant dryers

Also Published As

Publication number Publication date
JPS5013662B1 (enExample) 1975-05-21
GB1334579A (en) 1973-10-24
DE2161624A1 (de) 1972-07-13

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