US3509816A - Printing arrangement utilizing a continuously moving transfer band - Google Patents

Printing arrangement utilizing a continuously moving transfer band Download PDF

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Publication number
US3509816A
US3509816A US692816A US3509816DA US3509816A US 3509816 A US3509816 A US 3509816A US 692816 A US692816 A US 692816A US 3509816D A US3509816D A US 3509816DA US 3509816 A US3509816 A US 3509816A
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US
United States
Prior art keywords
band
image
magnetic
transfer band
ink
Prior art date
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Expired - Lifetime
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US692816A
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English (en)
Inventor
David B Spaulding
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
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Publication date
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Publication of US3509816A publication Critical patent/US3509816A/en
Assigned to ITT CORPORATION reassignment ITT CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/14—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by electrographic printing, e.g. xerography; by magnetographic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material

Definitions

  • a printing arrangement which forms, across a gap, a transferable magnetic ink pattern on a continuously moving transfer band, and transfers said pattern across another air gap to a transversely movable record surface.
  • this invention relates to a printing arrangement which provides an endless transfer band onto which there is formed a transferable magnetic image, the image being formed across a gap and removed from the transfer band across another gap onto a transversely movable record surface.
  • the prior art suggests using a magnetic field to attract liquid magnetic ink, however, a transfer band is not marked, but the magnetic ink is transferred from a conventional printing plate directly to the file copy paper.
  • a drum of two electrostatic images of opposite plurality are formed, electro static toner is applied to one image, and electrostatic and magnetic toner to the other image.
  • the second magnetic ink tone image is then transferred by rolling contact and a magnetic field to a print paper.
  • Another known use of magnetic ink is in an arrangement in which the ink is gravity fed by droplets from a nozzle and magnetized, dependent on the signal strength, and transversely applied to a tape to form the pattern.
  • An object of this invention is to provide an arrangement for projecting a temporary magnetic liquid ink pattern, across a gap, onto a moving transfer band, magnetically holding the pattern formed thereon, and projecting the pattern, across another gap, from the band onto a transversely movable record surface.
  • Another object of this invention is to provide an arrangement which includes the combination of forming a magnetic ink pattern on a transfer band, the ink comprising particles of a hard magnetic powder which is capable of being permanently magnetized at a magnetic station, which follows an image forming station, so as to polarize each droplet of ink on the band.
  • the forming and magnetization stations to be followed by a transfer station of opposite polarity for transferring the magnetic image formed on the transfer band to the record surface.
  • a printing arrangement which includes a continuously moving transfer band, a stationary image forming means for forming a magnetic pattern upon the band, across a gap, and a printout station for transferring the 3,509,816 Patented May 5, 1970 ice magnetic image across another gap and onto a transversely movable record sheet.
  • FIGS. 1 and 2 the principal elements of the printing arrangement are shown.
  • a continuously moving transfer band 11 is supported on two rollers 12, one or both of which may be powered to provide the motion of the endless band 11.
  • the band passes, but does not touch, a stationary image forming station 13 consisting of a row of fluid expulsion nozzles 14, capable of depositing discrete fluid droplets 15 on the moving band 11, in response to electrical or other suitable pulse commands 16.
  • the image forming station and band are arranged as shown in FIG. 2, so as to permit the formation of any image 19 in the form of a two-dimensional array of individual fluid droplets 15, without having the droplets run together and destroy the image.
  • the images having been so formed are transported by the moving band 11 past the record sheet 17.
  • an attractive field force arrangement 18 located directly behind the record sheet is excited, and the image placed on the transfer band at the image forming station is transferred from the moving band to the record surface.
  • the fluid employed in this arrangement is a magnetic ink, which comprises a suspended solution of iron or other magnetically attractive particles in a highly colored solvent or other suitable composition.
  • the transfer band 11 is fabricated of a suitable material such as disclosed in US. Pat. No. 3,247,825, but wherein the transfer belt itself could be impregnated with magnetized particles which forms a permanent flexible magnet with north and south poles 20 located on the opposite flat sides of the band as indicated in FIGURE 2.
  • the ink droplets 15 deposited on the band at the. image forming station, one such station could comprise an arrangement shown in US. Pat. No. 3,152,858, and are thereby held securely in place by the magnetic force exerted on each droplet by poles 20 to maintain the image integrity during the time interval intervening between the image formation and its removal at the transfer position.
  • the printing of the image 19 on the record sheet is achieved when the transfer band movement locates the array of ink droplets at the desired position in front of the record sheet.
  • the appropriate electrostatic or magnetic field station located in close proximity to the record sheet, is excited and exerts an attractive force on the ink droplets suflicient to overcome the magnetic force holding the image to the transfer band, so as to rapidly attract the magnetic image to the record sheet surface.
  • This operation takes place across the gap existing between the transfer band and the record sheet without interrupting the movement of the transfer band, and the excitation of the attractive field being of a rapid pulse nature.
  • Continuously moving transfer band 31 is supported on two rollers 32, one or both of which may be powered, to provide the motion of the endless band.
  • the band may be of the type with closely spaced, fine interstices for holding a liquid ink during travel as disclosed in US. Pat. No. 2,384,515.
  • the band passes through a stationary image forming station 33, which station may be of the type disclosed in the previous reference Pat. No. 3,247,825 and is capable of forming discrete ink media droplets 34 on the moving band 31 in response to electrical or other suitable energy pulse commands 35.
  • the image forming station and band are configured as shown in FIG.
  • the ink fiuid media 34 is comprised of a solution of fine particles of a material capable of being permanently magnetized when subjected to a magnetic field, i.e. a hard magnetic powder, one such type has a coercive force He of about 1.5 to 2.0 oersteds.
  • the mag netization station creates images formed of magnetic dipoles 39. After leaving the magnetization station, placement of a permanent magnet behind the image side of the band will cause the particles in the droplets to be attracted to the band thereby maintatining the image clarity until removal is effected onto the copy surface.
  • the band surface and capillary attraction of the fluid to the band are suitable, only capillary force for retaining the image need be utilized, and no image retaining magnet 40 need be used.
  • the images having been so formed are transported by the moving band past the record and in close proximity to an image expulsion device 411.
  • FIG. 6 illustrates the image expulsion device 41 consisting of an electromagnet capable of rapidly generating a magnetic polarity adjacent to the image and on the opposite side to that of the image face nearest the recording surface. A strong force tending to break the capillary retaining bond is thereby generated causing the image to be expelled toward the field station 47.
  • the field station 47 attractive force is utilized to attract the ink media, across the gap 46 separating the transfer band and the record surface, in a straight path of travel.
  • Either an electrostatic or magnetic field may be employed, with the use of an' electrostatic field implying either attraction of a statically neutral image through the use of an induced field grading force, or precharging the droplets by corona discharge, or other suitable means and using a uniform electric field to create the attractive force.
  • a transfer band printer comprising:
  • a continuously moving transfer band formed in a loop and adapted for receiving a transferable ink pattern
  • said ink droplets including magnetic particles capable of permanent magnetization in a given orientation
  • a magnetizing station positioned to magnetize said particles in said given orientation
  • a transfer station for transferring said magnetized pattern, across another gap, onto a record sheet movable transversely of said band, said station including an image expulsion device having electromagnetic segments positioned to form a magnetic field opposite to said given orientation and to propel the magnetized ink particles across said other gap;
  • the printer according to claim 1 including a pattern station and said image expulsion device to add to the band surface and capillary attraction for maintaining pattern clarity until transfer is effected.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Ink Jet (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
US692816A 1967-12-22 1967-12-22 Printing arrangement utilizing a continuously moving transfer band Expired - Lifetime US3509816A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69281667A 1967-12-22 1967-12-22

Publications (1)

Publication Number Publication Date
US3509816A true US3509816A (en) 1970-05-05

Family

ID=24782140

Family Applications (1)

Application Number Title Priority Date Filing Date
US692816A Expired - Lifetime US3509816A (en) 1967-12-22 1967-12-22 Printing arrangement utilizing a continuously moving transfer band

Country Status (5)

Country Link
US (1) US3509816A (fr)
BE (1) BE731980A (fr)
DE (1) DE1815826A1 (fr)
FR (1) FR96354E (fr)
GB (1) GB1241610A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3787879A (en) * 1970-12-03 1974-01-22 Mishima Kosan Co Ltd Magnetic ink recording system
DE2756813A1 (de) * 1976-12-20 1978-06-22 Addressograph Multigraph Druckverfahren und -vorrichtung
US4217819A (en) * 1977-11-11 1980-08-19 Siemens Aktiengesellschaft Device for the transfer process of characters, consisting of toner, that are applied to a continuously rotating band-shaped intermediate carrier
US4552469A (en) * 1983-06-10 1985-11-12 Tokyo Electric Co., Ltd. Ink dot printer
US4749292A (en) * 1984-10-25 1988-06-07 Tokyo Electric Co., Ltd. Ink dot printer
US5018445A (en) * 1988-04-19 1991-05-28 Six Albert J Magnetically delivered ink
US6499839B1 (en) 1999-02-09 2002-12-31 Source Technologies, Inc. Acicular particle ink formulation for an inkjet printer system
CN117341358A (zh) * 2012-03-05 2024-01-05 兰达公司 数字打印系统的控制设备和方法

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2841461A (en) * 1952-07-26 1958-07-01 Gen Dynamics Corp Apparatus for magnetic printing
US2985135A (en) * 1959-05-28 1961-05-23 Ibm Magnetic typewriter
US3052213A (en) * 1958-12-17 1962-09-04 Ibm Electrostatic printer apparatus for printing with liquid ink
US3188649A (en) * 1960-06-23 1965-06-08 Preisinger Max Electrostatic printer apparatus
US3211088A (en) * 1962-05-04 1965-10-12 Sperry Rand Corp Exponential horn printer
US3279367A (en) * 1964-06-25 1966-10-18 Nrc Co Impelled powdered ink printing device and process using intaglio means
US3296965A (en) * 1964-06-03 1967-01-10 Interchem Corp Method of electrostatic powder gravure printing and apparatus therefor
US3359566A (en) * 1966-08-01 1967-12-19 Xerox Corp Motor action capillary
US3377598A (en) * 1964-05-04 1968-04-09 Motorola Inc Electrical printing with ink replenishable web moving between styli and record
US3400213A (en) * 1963-07-20 1968-09-03 Rudolf Hell Kommanditgesellsch Electrostatic telegraphic printer
US3422753A (en) * 1965-09-08 1969-01-21 Siemens Ag Apparatus for the recording,by-the-line of symbols on a sheet-like carrier

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2841461A (en) * 1952-07-26 1958-07-01 Gen Dynamics Corp Apparatus for magnetic printing
US3052213A (en) * 1958-12-17 1962-09-04 Ibm Electrostatic printer apparatus for printing with liquid ink
US2985135A (en) * 1959-05-28 1961-05-23 Ibm Magnetic typewriter
US3188649A (en) * 1960-06-23 1965-06-08 Preisinger Max Electrostatic printer apparatus
US3211088A (en) * 1962-05-04 1965-10-12 Sperry Rand Corp Exponential horn printer
US3400213A (en) * 1963-07-20 1968-09-03 Rudolf Hell Kommanditgesellsch Electrostatic telegraphic printer
US3377598A (en) * 1964-05-04 1968-04-09 Motorola Inc Electrical printing with ink replenishable web moving between styli and record
US3296965A (en) * 1964-06-03 1967-01-10 Interchem Corp Method of electrostatic powder gravure printing and apparatus therefor
US3279367A (en) * 1964-06-25 1966-10-18 Nrc Co Impelled powdered ink printing device and process using intaglio means
US3422753A (en) * 1965-09-08 1969-01-21 Siemens Ag Apparatus for the recording,by-the-line of symbols on a sheet-like carrier
US3359566A (en) * 1966-08-01 1967-12-19 Xerox Corp Motor action capillary

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3787879A (en) * 1970-12-03 1974-01-22 Mishima Kosan Co Ltd Magnetic ink recording system
DE2756813A1 (de) * 1976-12-20 1978-06-22 Addressograph Multigraph Druckverfahren und -vorrichtung
US4217819A (en) * 1977-11-11 1980-08-19 Siemens Aktiengesellschaft Device for the transfer process of characters, consisting of toner, that are applied to a continuously rotating band-shaped intermediate carrier
US4552469A (en) * 1983-06-10 1985-11-12 Tokyo Electric Co., Ltd. Ink dot printer
US4749292A (en) * 1984-10-25 1988-06-07 Tokyo Electric Co., Ltd. Ink dot printer
US5018445A (en) * 1988-04-19 1991-05-28 Six Albert J Magnetically delivered ink
US6499839B1 (en) 1999-02-09 2002-12-31 Source Technologies, Inc. Acicular particle ink formulation for an inkjet printer system
CN117341358A (zh) * 2012-03-05 2024-01-05 兰达公司 数字打印系统的控制设备和方法

Also Published As

Publication number Publication date
FR96354E (fr) 1972-06-16
BE731980A (fr) 1969-10-24
GB1241610A (en) 1971-08-04
DE1815826A1 (de) 1969-08-28

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AS Assignment

Owner name: ITT CORPORATION

Free format text: CHANGE OF NAME;ASSIGNOR:INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION;REEL/FRAME:004389/0606

Effective date: 19831122