US3716018A - Device for heating and fixing toner images upon a recording medium - Google Patents

Device for heating and fixing toner images upon a recording medium Download PDF

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Publication number
US3716018A
US3716018A US00078486A US3716018DA US3716018A US 3716018 A US3716018 A US 3716018A US 00078486 A US00078486 A US 00078486A US 3716018D A US3716018D A US 3716018DA US 3716018 A US3716018 A US 3716018A
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US
United States
Prior art keywords
recording medium
roller
toner
endless belt
heating
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
US00078486A
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English (en)
Inventor
W Ohta
K Kasuya
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Application granted granted Critical
Publication of US3716018A publication Critical patent/US3716018A/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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/02—Exposure apparatus for contact printing
    • G03B27/14—Details
    • G03B27/30—Details adapted to be combined with processing apparatus
    • G03B27/306—Heat development
    • 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
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2064—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat combined with pressure
    • 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
    • G03G2215/20—Details of the fixing device or porcess
    • G03G2215/2003—Structural features of the fixing device
    • G03G2215/2016—Heating belt
    • G03G2215/2025—Heating belt the fixing nip having a rotating belt support member opposing a pressure member
    • G03G2215/2032—Heating belt the fixing nip having a rotating belt support member opposing a pressure member the belt further entrained around additional rotating belt support members

Definitions

  • ess belt is used f heating and fixing toner images upon a recording medium by [52] US. Cl. ..Il8/l0l, 118/60, 1 18/202, mounting the be on a roller having means for heating I 18/641 it and on a driving roller spaced apart from the heated [51] Int. Cl ..B05C 11/02 roner means.
  • the recording medium is passed closely [58] Field of Search ..118/101, 202, 257, 641, 637,
  • Cleaning means and a preheated pressure roller are also provided to improve the quality of the fused toner image.
  • the present invention relates to a device'for heating and fixing toner images upon a recording medium in an electrophotographic process using dry methods or. a thermographic process.
  • Heat fixing is generally employed for fixing a visible image, for example, formed by toner containing easily fusible resin in an electrophotographic process by dry method.
  • a heat source is employed such as an infrared ray lamp, a halogen lamp or a nichrome wire so that the visible image may be heated to a temperature between 100C and 1s0"c so as to be fused.
  • this method has disadvantages in that the time required for raising the temperature of the visible image to a fixing temperature is quite long;'the thermal efficiency is low;
  • Another object of the present invention is to provide an arrangement in which a recording medium is not brought into direct contact with a heating means and is prevented from being over-heated.
  • Another object of the present invention is to provide an arrangement for preventing the toner from being adhered to an endless belt for heating the toner.
  • Another object of the present-invention is to provide an arrangement for facilitating the easy removal of the toner adhered to the endless belt.
  • Another object of the present invention is to prevent overheating ofthe endless belt.
  • FIG. 1 is a sectional view in elevation a fundamental heating and fusing device in accordance with the present invention
  • FIGS. 2 and 3 are sectional views as in FIG. 1 illustrating additional features thereof;
  • FIG. 4-A and FIG. 4B are side views illustrating the copies used in thermographic process.
  • FIG. 5 is a sectional view in elevation of a device in accordance with the present invention for accomplishing the thermographic development of the copies shown in FIGS. 4-A and 4-B.
  • FIG. 1 illustrates the fundamental arrangement of the present invention, in which a visible image 2 is formed by a developing agent (toner) containing fusible resins upon a recording medium 1 advanced in the a halogen lamp, a nichrome wire, etc.
  • a developing agent toner
  • a recording medium 1 advanced in the a halogen lamp, a nichrome wire, etc.
  • non-adhesive endless belt is used for heating thetoner upon a recording medium.
  • the endless belt rides about a heating roller incorporating therein a heater and a drive roller spaced apart from the heating roller so that the endless belt may be suitably cooledby the time it returns to the heatingvroller after it haslfused thetoner on the recording maximrnrThat is, the overheating of the endless belt maybeprevented.
  • the endless belt for heating the toner may be brought into direct contact with the recording medium or may be spaced apart therefrom by a suitable distance.
  • a rotary cleaning brush may be. positionedin contact with the endless belt for removal of the toner and other contaminants which cling to the endless belt. This arranger'nentis especially advantageous when the endless belt is in direct contact with'the recording medium.
  • a device in accordance with the present invention maybe used for heatinga heat-sensitive substance such as, for example, aheat-sensitive paper or a'stencil.
  • roller 4 may serve as a heater.
  • the toner is heated and fixed to the recording medium 1, so that the permanent image 8 may be formed.
  • the endless belt 5 which wraps in it the hollow roller 4 and a spaced drive roller 6 is advanced at the same speed as that of the recording medium I in the direction b.
  • a pressure roller 7 rotating in the direction indicated by the arrow c has its peripheral surface covered with an elastic member such as thermostable rubber capable of withstanding a temperature of 200 C and serves to press the toner image 2 against the endless belt 5 and to prevent the toner'image from being distorted.
  • the fixing speed of the visible image may be improved when the pressure roller 7 is preheated to a temperature from 60 to C.
  • FIGS. 2 to 5 members which function as those in the embodiment illustrated in FIG. 1 are indicated by the same reference numerals. Therefore, the explanation of these members will not be made.
  • a cleaningbrush 9 rotates in the same direction with that of the roller 6 so as to clean the endless belt 5. Therefore, the endless belt 5 free from the toner may be always brought into contact with the heating roller 4.
  • the cleaning brush 9 is spaced apart from the heating roller 4 so that the aging of the cleaning brush 9 may be prevented. That is, the service life may be extended. As the endless belt 5 moves away from the heating roller 4, the toner attached thereupon is cooled, so that the removal of the toner upon the endless belt 5 may be further improved.
  • the embodiment illustrated in FIG. 3 is provided with an application roller 10 for applying silicon oil or the like over the endless belt Sin order to form a nonadhesive layer thereupon
  • the application roller is coated with a permeable substance such as cloth 9' for holding silicon oil therein.
  • The'application roller 10 rotates about a shaft 11 and makes contact with the endless belt 5 so that the non-adhesive layer may be formed upon the endless belt 5. Therefore non-adhesiveness of the endless belt surface 5 may be further improved.
  • FIG. 4-A and FIG. 4-B are side views of a heat-sensitive substance (thermographic copy) illustrating its thermographic process.
  • the copy is, for example, a stencil.
  • reference numeral 12 designates a heat-sensitive copy made of a porous paper or plastic sheet with waxy backing; and 13, an original to be reproduced in registration with the copy 12.
  • lnfrared rays are irradiated from the back of the copy 12 so that the image (or printing) portion upon the original 13 (generally a black-colored portion) absorbs much infrared rays.
  • the infrared rays 14 incident upon a non-image portion ornon-printing portion upon the original 13 are reflected and dissipated as shown by 16. Consequently, the temperature of the non-printing portion is not raised, so that a portion on the copy 12 corresponding to this non-printing portion will not melt.
  • the reproduced copy 12 may be used as stencil in mimeographing.
  • the embodiment illustrated in FIG. 5 is for accomplishing the thermographic process whose principle has been explained with reference toFlG. 4-A and FIG. 4-B, by a heater in accordance with the present invention.
  • the original 13 is placed over the copy 12 as shown and they are passed through the nip between the heating roller 4 and the pressure roller 7 in the direction indicated by the arrow 0.
  • the processing speed may be improved when the pressure roller 7 is pre-heated.
  • the endless belt 5 serves to easily control the temperaturein the thermographic process.
  • a device for heating and fixing a toner image upon a toner-carrying recording medium being transported thereby comprising:
  • a heating roller disposed adjacent the path of travel of said recording medium
  • a preheated pressure roller positioned opposite said heating roller and cooperating with said heating roller to pass said recording medium under pressure between them.
  • thermostable surface 8. A device as in claim 1, wherein the pressure roller has a thermostable surface.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)
US00078486A 1969-10-09 1970-10-06 Device for heating and fixing toner images upon a recording medium Expired - Lifetime US3716018A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44081371A JPS5016936B1 (fr) 1969-10-09 1969-10-09

Publications (1)

Publication Number Publication Date
US3716018A true US3716018A (en) 1973-02-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00078486A Expired - Lifetime US3716018A (en) 1969-10-09 1970-10-06 Device for heating and fixing toner images upon a recording medium

Country Status (2)

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US (1) US3716018A (fr)
JP (1) JPS5016936B1 (fr)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827394A (en) * 1971-02-15 1974-08-06 Ricoh Kk Developer apparatus
US3853552A (en) * 1971-12-03 1974-12-10 Ricoh Kk Method of fixing a toner by heating in electrophotographic duplication
US3878818A (en) * 1973-08-10 1975-04-22 Xerox Corp Cleaning apparatus for dry fuser rolls
US3929094A (en) * 1975-01-02 1975-12-30 Xerox Corp Roll fuser
US3929095A (en) * 1975-01-02 1975-12-30 Xerox Corp Roll fuser
US3929096A (en) * 1975-01-02 1975-12-30 Xerox Corp Roll fuser
US3941558A (en) * 1974-02-18 1976-03-02 Rank Xerox Ltd. Contact-heating fixing device for electrophotography
US3948215A (en) * 1972-03-14 1976-04-06 Ricoh Co., Ltd. Fixing toner images in electrophotography
US3964431A (en) * 1973-06-01 1976-06-22 Ricoh Co., Ltd. Device for supplying an offset preventing liquid to a fixing roller
US3966394A (en) * 1975-04-30 1976-06-29 Xerox Corporation Plural cleaning rolls assembly
US3980423A (en) * 1975-04-28 1976-09-14 Xerox Corporation Fuser cleaning roll assembly
US3980424A (en) * 1975-04-28 1976-09-14 Xerox Corporation Fuser cleaning roller
US4092099A (en) * 1977-02-08 1978-05-30 Rank Xerox, Ltd. Copier paper delivery means in a heat-fixing device of a copying machine
US4515466A (en) * 1982-05-27 1985-05-07 Xerox Corporation Sheet delivery station for copying apparatus
EP0181723A1 (fr) * 1984-10-31 1986-05-21 Xerox Corporation Appareil de fixage par fusion de faible masse, utilisant la chaleur et la pression
US4668073A (en) * 1984-05-04 1987-05-26 Dainippon Screen Mfg. Co., Ltd. Fixing apparatus
US4780742A (en) * 1984-07-30 1988-10-25 Canon Kabushiki Kaisha Image quality improving process and apparatus and sheet usable therewith
US5081502A (en) * 1987-07-15 1992-01-14 Hitachi, Ltd. Radiant heat fixing apparatus
US5678134A (en) * 1995-03-31 1997-10-14 Olympus Optical Co., Ltd. Cleaning device for an image forming apparatus
US5697036A (en) * 1996-08-12 1997-12-09 Xerox Corporation Single roll RAM system
US5946025A (en) * 1997-09-29 1999-08-31 Imation Corp. Thermal drum processor assembly with roller mounting assembly for a laser imaging device
US6007971A (en) * 1992-09-09 1999-12-28 Minnesota Mining And Manufacturing Apparatus, system, and method for processing photothermographic elements
US6091480A (en) * 1997-07-17 2000-07-18 3M Innovative Properties Company Film removal mechanism for use with a thermal drum processor system
US6436482B2 (en) * 1995-12-20 2002-08-20 Sony Corporation Substrate heating method
US6704526B2 (en) * 2001-03-28 2004-03-09 Canon Kabushiki Kaisha Image heating apparatus adapted for cleaning of speed detection mark
US20060045590A1 (en) * 2004-09-01 2006-03-02 Masamichi Yamada Fixing device and an image forming apparatus including the fixing device
US20140119791A1 (en) * 2012-10-29 2014-05-01 Alan Richard Priebe Toner fixer with heating liquid in cavity

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556008A (en) * 1948-12-28 1951-06-05 William F Stahl Plastic-sealing apparatus
US2684047A (en) * 1953-05-11 1954-07-20 Maurice M Walker Shingle painting and a machine therefor
US3132047A (en) * 1961-06-29 1964-05-05 Xerox Corp Xerographic fixing apparatus
US3161529A (en) * 1961-03-24 1964-12-15 Eastman Kodak Co Thermoxerography
US3374769A (en) * 1965-12-06 1968-03-26 Xerox Corp Toner fusing apparatus
US3377598A (en) * 1964-05-04 1968-04-09 Motorola Inc Electrical printing with ink replenishable web moving between styli and record
US3605690A (en) * 1970-03-18 1971-09-20 Itt Printing apparatus for transferring magnetic particles to a paper

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2909971A (en) * 1954-03-29 1959-10-27 Ibm Printing machine
US3268351A (en) * 1961-06-29 1966-08-23 Xerox Corp Xerographing fixing method and apparatus
JPS4218634Y1 (fr) * 1965-04-06 1967-10-27

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556008A (en) * 1948-12-28 1951-06-05 William F Stahl Plastic-sealing apparatus
US2684047A (en) * 1953-05-11 1954-07-20 Maurice M Walker Shingle painting and a machine therefor
US3161529A (en) * 1961-03-24 1964-12-15 Eastman Kodak Co Thermoxerography
US3132047A (en) * 1961-06-29 1964-05-05 Xerox Corp Xerographic fixing apparatus
US3377598A (en) * 1964-05-04 1968-04-09 Motorola Inc Electrical printing with ink replenishable web moving between styli and record
US3374769A (en) * 1965-12-06 1968-03-26 Xerox Corp Toner fusing apparatus
US3605690A (en) * 1970-03-18 1971-09-20 Itt Printing apparatus for transferring magnetic particles to a paper

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827394A (en) * 1971-02-15 1974-08-06 Ricoh Kk Developer apparatus
US3853552A (en) * 1971-12-03 1974-12-10 Ricoh Kk Method of fixing a toner by heating in electrophotographic duplication
US3948215A (en) * 1972-03-14 1976-04-06 Ricoh Co., Ltd. Fixing toner images in electrophotography
US3964431A (en) * 1973-06-01 1976-06-22 Ricoh Co., Ltd. Device for supplying an offset preventing liquid to a fixing roller
US3878818A (en) * 1973-08-10 1975-04-22 Xerox Corp Cleaning apparatus for dry fuser rolls
US3941558A (en) * 1974-02-18 1976-03-02 Rank Xerox Ltd. Contact-heating fixing device for electrophotography
US3929095A (en) * 1975-01-02 1975-12-30 Xerox Corp Roll fuser
US3929096A (en) * 1975-01-02 1975-12-30 Xerox Corp Roll fuser
US3929094A (en) * 1975-01-02 1975-12-30 Xerox Corp Roll fuser
US3980423A (en) * 1975-04-28 1976-09-14 Xerox Corporation Fuser cleaning roll assembly
US3980424A (en) * 1975-04-28 1976-09-14 Xerox Corporation Fuser cleaning roller
US3966394A (en) * 1975-04-30 1976-06-29 Xerox Corporation Plural cleaning rolls assembly
US4092099A (en) * 1977-02-08 1978-05-30 Rank Xerox, Ltd. Copier paper delivery means in a heat-fixing device of a copying machine
US4515466A (en) * 1982-05-27 1985-05-07 Xerox Corporation Sheet delivery station for copying apparatus
US4668073A (en) * 1984-05-04 1987-05-26 Dainippon Screen Mfg. Co., Ltd. Fixing apparatus
US4780742A (en) * 1984-07-30 1988-10-25 Canon Kabushiki Kaisha Image quality improving process and apparatus and sheet usable therewith
EP0181723A1 (fr) * 1984-10-31 1986-05-21 Xerox Corporation Appareil de fixage par fusion de faible masse, utilisant la chaleur et la pression
US5081502A (en) * 1987-07-15 1992-01-14 Hitachi, Ltd. Radiant heat fixing apparatus
US6007971A (en) * 1992-09-09 1999-12-28 Minnesota Mining And Manufacturing Apparatus, system, and method for processing photothermographic elements
US5678134A (en) * 1995-03-31 1997-10-14 Olympus Optical Co., Ltd. Cleaning device for an image forming apparatus
US6436482B2 (en) * 1995-12-20 2002-08-20 Sony Corporation Substrate heating method
US5697036A (en) * 1996-08-12 1997-12-09 Xerox Corporation Single roll RAM system
US6091480A (en) * 1997-07-17 2000-07-18 3M Innovative Properties Company Film removal mechanism for use with a thermal drum processor system
US5946025A (en) * 1997-09-29 1999-08-31 Imation Corp. Thermal drum processor assembly with roller mounting assembly for a laser imaging device
US6704526B2 (en) * 2001-03-28 2004-03-09 Canon Kabushiki Kaisha Image heating apparatus adapted for cleaning of speed detection mark
US20060045590A1 (en) * 2004-09-01 2006-03-02 Masamichi Yamada Fixing device and an image forming apparatus including the fixing device
US7359664B2 (en) * 2004-09-01 2008-04-15 Ricoh Co., Ltd. Fixing device for an image forming apparatus including supporting members for fixing belts of the fixing device
US20140119791A1 (en) * 2012-10-29 2014-05-01 Alan Richard Priebe Toner fixer with heating liquid in cavity

Also Published As

Publication number Publication date
JPS5016936B1 (fr) 1975-06-17

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