US2035475A - System of recording - Google Patents
System of recording Download PDFInfo
- Publication number
- US2035475A US2035475A US657878A US65787833A US2035475A US 2035475 A US2035475 A US 2035475A US 657878 A US657878 A US 657878A US 65787833 A US65787833 A US 65787833A US 2035475 A US2035475 A US 2035475A
- Authority
- US
- United States
- Prior art keywords
- recording
- paper
- electrode
- finely divided
- electrostatic
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/10—Duplicating or marking methods; Sheet materials for use therein by using carbon paper or the like
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G19/00—Processes using magnetic patterns; Apparatus therefor, i.e. magnetography
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S101/00—Printing
- Y10S101/37—Printing employing electrostatic force
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S29/00—Metal working
- Y10S29/028—Magnetic recording digest
Definitions
- This invention relates to improvements in the method of and apparatus for electrostatic and electromagnetic recording and particularly to the method and apparatus whereby the record may be made in any desired color.
- An object of this invention is to provide a simple, convenient color recording system suitable for use in any type of recording apparatus wherein a permanent record in one or more colors is desired.
- Another object of this invention is to provide a method and apparatus for color recording in which electrostatic and electromagnetic means are used to transfer the marking material directly on to a record sheet without the necessity of any intervening steps or apparatus.
- the invention consists in the construction, combination and arrangement of parts as will be described more fully hereinafter.
- Fig. 1 is a schematic showing of an electrostatic recorder
- Fig. 2 is a schematic showing of an electromagnetic type of recorder.
- Fig. 1 One method of application is shown in Fig. 1 wherein the point electrode l is of a form similar to that used in spark recorders, which is placed nearly in contact with the moving paper 4 upon which the record is made. Beneath the paper 4 is placed another electrode 2 which is in the form of a flat conducting plate. The surface 3 of this electrode adjacent the paper is especially prepared by coating it with a finely divided colored powder, preferably in colloidal form, held to the surface by a light insulating binder. Upon applying a potential of sufficient value to the conductors 5 and 6, an electrostatic field is created between electrodes I and 2 of such value as to cause some of the particles adhering to the electrode 2 to be pulled upward and deposited'on the record sheet 4.
- the colored particles may carry either a positive or a negative electric charge, and therefore the direction of application of the electrostatic field must be such as to pull the particles off the electrode 2 toward the paper in the direction of the electrode I.
- Electrostatic recorders have been proposed heretofore wherein a colored liquid is drawn through a capillary tube and caused to be drawn on to a recording sheet by an electrostatic field.
- This structure presents certain disadvantages in that 5 the capillary tube may become clogged or broken, in which case the apparatus would be rendered inoperative.
- the surface ID of the member i l is covl5 ered with a finely divided colored powder made magnetic by the addition of some magnetic substance such as finely divided nickel or iron.
- This powder is held on the surface by a light binding material as in the previous case.
- the paper 4 20 passes over member in the same manner as shown in Fig. 1.
- a small rod 1 of iron or other magnetizable material which terminates in a point 9 above and closely adjacent to the surface of the paper 4.
- the magnetic particles carried on the surface i0 may 30 be attracted and pulled oil? with sufilcient force to cause them to be deposited upon the under side of the paper 4.
- the paper 4 is uniformly or otherwise moved in the 35 direction indicated by the arrows so that continuous records may be made. Obviously, several different records may be made upon a single strip by making the various records in different colors.
- An electromagnetic recording device comprising a coil, a magnetic core within said coil having an end of reduced section extending from said coil, a marking medium containing a finely divided magnetic material spaced from the reduced section end 01' said core, a movable record sheet disposed between said core and said marking medium and means for supplying recording currents through said coil for causing some of saidmarkingmediumtobedrawn toward said core on to said record sheet.
- a marking element comprising a finely divided magnetizable material, a coloring material and a I
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
Description
March 31, 1936. D. L. HAY 2,035,475
SYSTEM OF RECORDING Filed Feb. 21, 1955 INVENTOR Donald L Haj A T TORNE Y Patented Mar. 31, 1936 UNITED STATES PATENT OFFICE (Granted under the act or March amended April 30, 1928; 370 0. G. 757) This invention relates to improvements in the method of and apparatus for electrostatic and electromagnetic recording and particularly to the method and apparatus whereby the record may be made in any desired color.
An object of this invention is to provide a simple, convenient color recording system suitable for use in any type of recording apparatus wherein a permanent record in one or more colors is desired.
Another object of this invention is to provide a method and apparatus for color recording in which electrostatic and electromagnetic means are used to transfer the marking material directly on to a record sheet without the necessity of any intervening steps or apparatus.
With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts as will be described more fully hereinafter.
Referring now to the drawing forming part of this specification: I
Fig. 1 is a schematic showing of an electrostatic recorder;
Fig. 2 is a schematic showing of an electromagnetic type of recorder.
One method of application is shown in Fig. 1 wherein the point electrode l is of a form similar to that used in spark recorders, which is placed nearly in contact with the moving paper 4 upon which the record is made. Beneath the paper 4 is placed another electrode 2 which is in the form of a flat conducting plate. The surface 3 of this electrode adjacent the paper is especially prepared by coating it with a finely divided colored powder, preferably in colloidal form, held to the surface by a light insulating binder. Upon applying a potential of sufficient value to the conductors 5 and 6, an electrostatic field is created between electrodes I and 2 of such value as to cause some of the particles adhering to the electrode 2 to be pulled upward and deposited'on the record sheet 4. It is not necessary to apply a potential to conductors 5 and 6 of such a value as to cause a spark to jump between the electrodes l and 2. Depending upon the composition of the powder, the colored particles may carry either a positive or a negative electric charge, and therefore the direction of application of the electrostatic field must be such as to pull the particles off the electrode 2 toward the paper in the direction of the electrode I.
It may readily be seen that by coating the electrode 2 with powders of different colors, different colored records may be obtained.
Electrostatic recorders have been proposed heretofore wherein a colored liquid is drawn through a capillary tube and caused to be drawn on to a recording sheet by an electrostatic field. This structure presents certain disadvantages in that 5 the capillary tube may become clogged or broken, in which case the apparatus would be rendered inoperative.
In the present invention the use of a finely divided dry material placed directly upon one of 10 the electrodes eliminates the disadvantages inherent in the structure disclosed in Kitsee Patent No. 1,097,131.
Another method of application is shown in Fig.
2 wherein the surface ID of the member i l is covl5 ered with a finely divided colored powder made magnetic by the addition of some magnetic substance such as finely divided nickel or iron. This powder is held on the surface by a light binding material as in the previous case. The paper 4 20 passes over member in the same manner as shown in Fig. 1. Directly above paper 4 is placed a small rod 1 of iron or other magnetizable material which terminates in a point 9 above and closely adjacent to the surface of the paper 4. By passing an electric current through the winding 8 by any suitable means which may be connected to the conductors l2 and I3, or otherwise suitably magnetizing the member I, the magnetic particles carried on the surface i0 may 30 be attracted and pulled oil? with sufilcient force to cause them to be deposited upon the under side of the paper 4.
In the structures shown in Figs. 1 and 2, the paper 4 is uniformly or otherwise moved in the 35 direction indicated by the arrows so that continuous records may be made. Obviously, several different records may be made upon a single strip by making the various records in different colors.
It will be understood that the above description and accompanying drawing comprehend only the general and preferred embodiments of my invention and that various changes maybe made therein within the scope of the appended 45 claims without sacrificing any of the advantages of this invention.
The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental 50 purposes, without the payment of any royalty thereon.
I claim:
1. An electromagnetic recording device, comprising a coil, a magnetic core within said coil having an end of reduced section extending from said coil, a marking medium containing a finely divided magnetic material spaced from the reduced section end 01' said core, a movable record sheet disposed between said core and said marking medium and means for supplying recording currents through said coil for causing some of saidmarkingmediumtobedrawn toward said core on to said record sheet.
2. In an electromagnetic recordingvdevice a marking element comprising a finely divided magnetizable material, a coloring material and a I
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US657878A US2035475A (en) | 1933-02-21 | 1933-02-21 | System of recording |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US657878A US2035475A (en) | 1933-02-21 | 1933-02-21 | System of recording |
Publications (1)
Publication Number | Publication Date |
---|---|
US2035475A true US2035475A (en) | 1936-03-31 |
Family
ID=24639026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US657878A Expired - Lifetime US2035475A (en) | 1933-02-21 | 1933-02-21 | System of recording |
Country Status (1)
Country | Link |
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US (1) | US2035475A (en) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2532631A (en) * | 1945-09-13 | 1950-12-05 | Walter J Loria | Timepiece calibration recording apparatus |
US2677275A (en) * | 1951-11-17 | 1954-05-04 | Sigmund S Dabrowski | Electromagnetic method of testing adhesive qualities of paints, lacquers, and the like |
US2706118A (en) * | 1947-07-03 | 1955-04-12 | Armour Res Found | Magnetic recorder |
US2841461A (en) * | 1952-07-26 | 1958-07-01 | Gen Dynamics Corp | Apparatus for magnetic printing |
US2863712A (en) * | 1955-12-29 | 1958-12-09 | Bell Telephone Labor Inc | Electric printer for magnetic codes |
US2874063A (en) * | 1953-03-23 | 1959-02-17 | Rca Corp | Electrostatic printing |
US2895847A (en) * | 1953-12-21 | 1959-07-21 | Battelle Development Corp | Electric image development |
US2919785A (en) * | 1956-11-29 | 1960-01-05 | Columbia Ribbon Carbon Mfg | Typewriter ribbon control |
US2924646A (en) * | 1953-04-23 | 1960-02-09 | Gen Dynamics Corp | Printing apparatus |
US2925310A (en) * | 1957-08-12 | 1960-02-16 | Cons Electrodynamics Corp | Direct writing oscillograph |
US2955894A (en) * | 1957-04-05 | 1960-10-11 | Burroughs Corp | Page printing apparatus |
US2997361A (en) * | 1958-06-25 | 1961-08-22 | Ibm | Selective electrostatic character printing |
US3011436A (en) * | 1953-09-30 | 1961-12-05 | Gen Electric | Methods of making printing plates |
US3012839A (en) * | 1954-07-15 | 1961-12-12 | Burroughs Corp | Electrographic printer |
US3017234A (en) * | 1956-05-31 | 1962-01-16 | Ncr Co | Electromagnetic printer |
US3091762A (en) * | 1957-02-04 | 1963-05-28 | Xerox Corp | Electrostatic apparatus for measuring and recording time intervals |
US3106479A (en) * | 1952-12-03 | 1963-10-08 | Rca Corp | Electrostatic printing method and apparatus |
US3179042A (en) * | 1962-06-28 | 1965-04-20 | Sperry Rand Corp | Sudden steam printer |
US3875576A (en) * | 1973-06-25 | 1975-04-01 | Xerox Corp | Electrostatic imaging system with magnetic toner |
US4654677A (en) * | 1982-04-07 | 1987-03-31 | Hitachi, Ltd. | Recording apparatus |
-
1933
- 1933-02-21 US US657878A patent/US2035475A/en not_active Expired - Lifetime
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2532631A (en) * | 1945-09-13 | 1950-12-05 | Walter J Loria | Timepiece calibration recording apparatus |
US2706118A (en) * | 1947-07-03 | 1955-04-12 | Armour Res Found | Magnetic recorder |
US2677275A (en) * | 1951-11-17 | 1954-05-04 | Sigmund S Dabrowski | Electromagnetic method of testing adhesive qualities of paints, lacquers, and the like |
US2841461A (en) * | 1952-07-26 | 1958-07-01 | Gen Dynamics Corp | Apparatus for magnetic printing |
US3106479A (en) * | 1952-12-03 | 1963-10-08 | Rca Corp | Electrostatic printing method and apparatus |
US2874063A (en) * | 1953-03-23 | 1959-02-17 | Rca Corp | Electrostatic printing |
US2924646A (en) * | 1953-04-23 | 1960-02-09 | Gen Dynamics Corp | Printing apparatus |
US3011436A (en) * | 1953-09-30 | 1961-12-05 | Gen Electric | Methods of making printing plates |
US2895847A (en) * | 1953-12-21 | 1959-07-21 | Battelle Development Corp | Electric image development |
US3012839A (en) * | 1954-07-15 | 1961-12-12 | Burroughs Corp | Electrographic printer |
US2863712A (en) * | 1955-12-29 | 1958-12-09 | Bell Telephone Labor Inc | Electric printer for magnetic codes |
US3017234A (en) * | 1956-05-31 | 1962-01-16 | Ncr Co | Electromagnetic printer |
US2919785A (en) * | 1956-11-29 | 1960-01-05 | Columbia Ribbon Carbon Mfg | Typewriter ribbon control |
US3091762A (en) * | 1957-02-04 | 1963-05-28 | Xerox Corp | Electrostatic apparatus for measuring and recording time intervals |
US2955894A (en) * | 1957-04-05 | 1960-10-11 | Burroughs Corp | Page printing apparatus |
US2925310A (en) * | 1957-08-12 | 1960-02-16 | Cons Electrodynamics Corp | Direct writing oscillograph |
US2997361A (en) * | 1958-06-25 | 1961-08-22 | Ibm | Selective electrostatic character printing |
US3179042A (en) * | 1962-06-28 | 1965-04-20 | Sperry Rand Corp | Sudden steam printer |
US3875576A (en) * | 1973-06-25 | 1975-04-01 | Xerox Corp | Electrostatic imaging system with magnetic toner |
US4654677A (en) * | 1982-04-07 | 1987-03-31 | Hitachi, Ltd. | Recording apparatus |
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