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
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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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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

  • 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.

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  • 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 (enrdf_load_stackoverflow)
JP (1) JPS5330333B1 (enrdf_load_stackoverflow)
DE (1) DE2102949C3 (enrdf_load_stackoverflow)
FR (1) FR2122986A5 (enrdf_load_stackoverflow)
GB (1) GB1333683A (enrdf_load_stackoverflow)

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

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