US3746834A - Device for fixing electrographic power images - Google Patents
Device for fixing electrographic power images Download PDFInfo
- 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
- Authority
- 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
Links
- 230000005855 radiation Effects 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000000969 carrier Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000012876 carrier material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000019612 pigmentation Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
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.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
- Control Of Resistance Heating (AREA)
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)
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)
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)
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 |
-
1971
- 1971-01-22 DE DE2102949A patent/DE2102949C3/de not_active Expired
-
1972
- 1972-01-04 US US00215352A patent/US3746834A/en not_active Expired - Lifetime
- 1972-01-19 JP JP701772A patent/JPS5330333B1/ja active Pending
- 1972-01-19 GB GB253672A patent/GB1333683A/en not_active Expired
- 1972-01-20 FR FR7201887A patent/FR2122986A5/fr not_active Expired
Patent Citations (9)
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)
Title |
---|
Williams, Image Fuser, IBM Technical Disclosure Bulletin, Vol. 13, No. 10, March 1971, pg. 3072. * |
Cited By (3)
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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