EP0395448A3 - Electrostatic print head - Google Patents

Electrostatic print head Download PDF

Info

Publication number
EP0395448A3
EP0395448A3 EP19900304653 EP90304653A EP0395448A3 EP 0395448 A3 EP0395448 A3 EP 0395448A3 EP 19900304653 EP19900304653 EP 19900304653 EP 90304653 A EP90304653 A EP 90304653A EP 0395448 A3 EP0395448 A3 EP 0395448A3
Authority
EP
European Patent Office
Prior art keywords
stylus
print head
electrostatic
medium
voltage
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.)
Withdrawn
Application number
EP19900304653
Other languages
German (de)
French (fr)
Other versions
EP0395448A2 (en
Inventor
David E. Doggett
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Synergy Computer Graphics 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 Nippon Steel Corp, Synergy Computer Graphics Corp filed Critical Nippon Steel Corp
Publication of EP0395448A2 publication Critical patent/EP0395448A2/en
Publication of EP0395448A3 publication Critical patent/EP0395448A3/en
Withdrawn legal-status Critical Current

Links

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
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/32—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head
    • G03G15/321—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head by charge transfer onto the recording material in accordance with the image
    • G03G15/325—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head by charge transfer onto the recording material in accordance with the image using a stylus or a multi-styli array
    • 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
    • B41J2/385—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material
    • B41J2/39—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material using multi-stylus heads
    • B41J2/395—Structure of multi-stylus heads

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Recording Measured Values (AREA)

Abstract

Each of the plurality of styli contained in an electrostatic print head (101, 102, 103, 104) and used for placing an electrostatic charge on a dielectric coated medium has a rectangular cross section. The thickness of the cross section is selected such that the difference between the lowest voltage on the stylus at which the amount of electrical charge deposited on the dielectric medium for any increase in voltage on the stylus increases substantially in a linear fashion and the lowest voltage on the stylus at which an unwanted background image is formed on the medium is selected to have a value equal to or less than a selected number. The thickness can be selected to minimize this difference ot to ensure that the electrostatic print head (101, 102, 103, 104) performs for some minimum lifetime or to ensure that the distance (d) between adjacent styli in the print head is selected such that current flowing from a stylus having a print voltage applied thereto to a directly adjacent stylus with a lower voltage applied thereto is below a selected number.
EP19900304653 1989-04-28 1990-04-27 Electrostatic print head Withdrawn EP0395448A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US34515289A 1989-04-28 1989-04-28
US345152 1989-04-28

Publications (2)

Publication Number Publication Date
EP0395448A2 EP0395448A2 (en) 1990-10-31
EP0395448A3 true EP0395448A3 (en) 1991-08-21

Family

ID=23353762

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900304653 Withdrawn EP0395448A3 (en) 1989-04-28 1990-04-27 Electrostatic print head

Country Status (2)

Country Link
EP (1) EP0395448A3 (en)
JP (1) JPH0367667A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918580A (en) * 1958-05-09 1959-12-22 Burroughs Corp Electrographic printing head
US2919171A (en) * 1957-02-27 1959-12-29 Burroughs Corp Page printing apparatus
US3946403A (en) * 1973-06-13 1976-03-23 Tokyo Shibaura Electric Co., Ltd. Electrostatic recorder with three state switching
US3958251A (en) * 1973-01-02 1976-05-18 Honeywell Information Systems Inc. Electrographic printing system utilizing multiple offset styli
US4588997A (en) * 1984-12-04 1986-05-13 Xerox Corporation Electrographic writing head

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56111679A (en) * 1980-02-06 1981-09-03 Mitsubishi Electric Corp Electrostatic recording head
JPS5789775A (en) * 1980-11-25 1982-06-04 Mitsubishi Electric Corp Electrostatic recorder
JPS62181161A (en) * 1986-02-05 1987-08-08 Canon Inc Manufacture of ion generator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919171A (en) * 1957-02-27 1959-12-29 Burroughs Corp Page printing apparatus
US2918580A (en) * 1958-05-09 1959-12-22 Burroughs Corp Electrographic printing head
US3958251A (en) * 1973-01-02 1976-05-18 Honeywell Information Systems Inc. Electrographic printing system utilizing multiple offset styli
US3946403A (en) * 1973-06-13 1976-03-23 Tokyo Shibaura Electric Co., Ltd. Electrostatic recorder with three state switching
US4588997A (en) * 1984-12-04 1986-05-13 Xerox Corporation Electrographic writing head

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 12, no. 27 (M-662)[2874], 27th January 1988; & JP,A,62 181 161 (CANON INC.) 08-08-1987 *
PATENT ABSTRACTS OF JAPAN, vol. 5, no. 190 (M-100)[862], 4th December 1981; & JP,A,56 111 679 (MITSUBISHI) 03-09-1981 *
PATENT ABSTRACTS OF JAPAN, vol. 6, no. 171 (P-140)[1049], 4th September 1982; & JP,A,57 089 775 (MITSUBISHI) 04-06-1982 *

Also Published As

Publication number Publication date
EP0395448A2 (en) 1990-10-31
JPH0367667A (en) 1991-03-22

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