US3746834A - Device for fixing electrographic power images - Google Patents

Device for fixing electrographic power images Download PDF

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Publication number
US3746834A
US3746834A US00215352A US3746834DA US3746834A US 3746834 A US3746834 A US 3746834A US 00215352 A US00215352 A US 00215352A US 3746834D A US3746834D A US 3746834DA US 3746834 A US3746834 A US 3746834A
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US
United States
Prior art keywords
reflector
carrier
radiation
thermal
radiator
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
US00215352A
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English (en)
Inventor
H Purps
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.)
US Philips Corp
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US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3746834A publication Critical patent/US3746834A/en
Anticipated expiration legal-status Critical
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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
    • G03G15/20—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

  • the invention relates to a device for thermal fixation of [58] Field of Search 219/216, 388, 347-349, electrographic powder images on carriers of arbitrary 219/469-471; 250/65 ZE; 263/6 E; 355/9; quality and thickness.
  • the device comprises a thermal 118/637; 117/175 radiator having a mechanical radiation shutter in the form of a rotatable cylindrical reflector provided with [56] Ref e Cit d a bar-shaped radiator in the focal point for selective ra- UNITED STATES PATENTS diation of given areas of the carrier. 3,437,072 4/1969 Levinson 219/216 X 9 Claims, 2 Drawing Figures DEVICE FOR FIXING ELECTROGRAPHIC POWER IMAGES
  • the invention relates to a device for thermal fixation of electrographic powder images on carriers of arbitrary quality and thickness.
  • the device according to the invention has for its object to bring documents which are to be printed only with single or a few lines of electrographically produced powder images for example, payment notes in banking, savings books, materials and warehouse slips etc. into contact with a thermal radiation source each time only in the area of the provided information and for a period only such as is absolutely required for reliable fixation of the powder image on the relevant carrier material.
  • the novel device is characterized by a thermal radiator having a mechanical radiation shutter for the selective radiation of given areas of the carrier.
  • the thermal radiation may each time be directed and dosed in time on single or also on a plurality of-lines of the text information.
  • FIG. 1 is a longitudinal sectional view
  • FIG. 2 is a sectional side view.
  • a rod shaped thermal radiator 3 for example, an infrared radiator, halogen lamp, ect., having a high radiation power.
  • the carrier 4 is passed underneath the reflector l on a transport device 5.
  • the reflector l is mounted to be rotatable and is driven by a motor 9, for example, via a pulley l and a belt 11.
  • a fan 6 For cooling the radiator 3, and also for discharging any vapors produced when the toner image is melted, a fan 6 communicates with the reflector 1 via the duct 8: in principle, an overpressure fan or alternatively an underpressure fan, may be used for this purpose.
  • the radiation of given areas on the carrier 4 for example, single text lines can be controlled by appropriate synchronization of the document transport 5 and the reflector drive 9.
  • the drive motor 9 use may be made of stepping motors, motors having an electromagnetic coupling-braking system, or a single-revolution coupling.
  • the circular section of the reflector 1 shown in FIG. 2 has only a limited focussing effect for the thermal radiation, so that for a further embodiment of the concept of the invention, a cylindrical reflector having a parabolic section is proposed.
  • the principal concept of this embodiment is that only single lines of a carrier are to be radiated, in this case a higher radiation efficiency can be obtained with comparatively smaller mechanical dimensions, by means of a parabolic reflector section.
  • the inside of the reflector is suitably mirrored.
  • a reflector 13 may be provided underneath the carrier 4 in order to improve the radiation efficiency.
  • a device for thermal fixation of electrographic powder images on carriers of arbitrary quality and thickness comprising a thermal radiator for radiating the carrier passing in proximity thereto, said thermal radiator having a mechanical radiation shutter for the selective radiation of given areas of said carrier, such as line by line, said radiation shutter being constructed in the form of a cylindrical reflector, said reflector being pivotable about a longitudinal axis thereof, and having a radiator substantially in a focal point, and means for controlling the radiation of desired areas on the carrier for a given period of time, said radiation control means further comprising means for rotating said reflector about the longitudinal axis in synchronization with passage of said carrier past said reflector.
  • a device as claimed in claim 1, wherein the cylindrical reflector has an outer cylindrical construction and a parabolic reflective section on the inside thereof.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)
  • Control Of Resistance Heating (AREA)
US00215352A 1971-01-22 1972-01-04 Device for fixing electrographic power images Expired - Lifetime US3746834A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2102949A DE2102949C3 (de) 1971-01-22 1971-01-22 Wärmeschmelzfixiereinrichtung

Publications (1)

Publication Number Publication Date
US3746834A true US3746834A (en) 1973-07-17

Family

ID=5796632

Family Applications (1)

Application Number Title Priority Date Filing Date
US00215352A Expired - Lifetime US3746834A (en) 1971-01-22 1972-01-04 Device for fixing electrographic power images

Country Status (5)

Country Link
US (1) US3746834A (de)
JP (1) JPS5330333B1 (de)
DE (1) DE2102949C3 (de)
FR (1) FR2122986A5 (de)
GB (1) GB1333683A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4197444A (en) * 1978-05-01 1980-04-08 Pitney-Bowes, Inc. A.C./D.C. Solenoid drive circuit
US4477706A (en) * 1982-07-19 1984-10-16 Control Data Corporation Combination microwave/convection and broiling oven
US4493960A (en) * 1982-08-12 1985-01-15 Micro-Quartz Technology Corp. Ceramic blinders for a microwave oven quartz lamp

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2913998C2 (de) * 1979-04-06 1983-11-17 Siemens AG, 1000 Berlin und 8000 München Fixiervorrichtung

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2656449A (en) * 1951-05-01 1953-10-20 Gen Electric Canada Electric radiant heat drier
US2816204A (en) * 1955-03-23 1957-12-10 Pastoor Beno Johannes Electric radiator
US2852651A (en) * 1953-11-02 1958-09-16 Haloid Xerox Inc Fusing mechanism for a xerographic copying machine
US3123700A (en) * 1964-03-03 Radiation exposure unit
US3247383A (en) * 1960-04-05 1966-04-19 Minnesota Mining & Mfg Infra-red reflector assembly for thermographic copying machine
US3437072A (en) * 1965-04-15 1969-04-08 Monsanto Graphic Syst Apparatus for fusing an electroscopic powder particle image
US3448970A (en) * 1967-08-04 1969-06-10 Addressograph Multigraph Fuser for electrostatic images
US3464680A (en) * 1966-12-30 1969-09-02 Konishiroku Photo Ind Heating apparatus for sheet-like material
US3649811A (en) * 1969-07-24 1972-03-14 Western Electric Co Radiant energy soldering

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123700A (en) * 1964-03-03 Radiation exposure unit
US2656449A (en) * 1951-05-01 1953-10-20 Gen Electric Canada Electric radiant heat drier
US2852651A (en) * 1953-11-02 1958-09-16 Haloid Xerox Inc Fusing mechanism for a xerographic copying machine
US2816204A (en) * 1955-03-23 1957-12-10 Pastoor Beno Johannes Electric radiator
US3247383A (en) * 1960-04-05 1966-04-19 Minnesota Mining & Mfg Infra-red reflector assembly for thermographic copying machine
US3437072A (en) * 1965-04-15 1969-04-08 Monsanto Graphic Syst Apparatus for fusing an electroscopic powder particle image
US3464680A (en) * 1966-12-30 1969-09-02 Konishiroku Photo Ind Heating apparatus for sheet-like material
US3448970A (en) * 1967-08-04 1969-06-10 Addressograph Multigraph Fuser for electrostatic images
US3649811A (en) * 1969-07-24 1972-03-14 Western Electric Co Radiant energy soldering

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Williams, Image Fuser, IBM Technical Disclosure Bulletin, Vol. 13, No. 10, March 1971, pg. 3072. *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4197444A (en) * 1978-05-01 1980-04-08 Pitney-Bowes, Inc. A.C./D.C. Solenoid drive circuit
US4477706A (en) * 1982-07-19 1984-10-16 Control Data Corporation Combination microwave/convection and broiling oven
US4493960A (en) * 1982-08-12 1985-01-15 Micro-Quartz Technology Corp. Ceramic blinders for a microwave oven quartz lamp

Also Published As

Publication number Publication date
DE2102949C3 (de) 1979-01-18
JPS5330333B1 (de) 1978-08-26
GB1333683A (en) 1973-10-10
DE2102949A1 (de) 1972-08-03
FR2122986A5 (de) 1972-09-01
DE2102949B2 (de) 1978-05-18

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