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JPS5698073A - Printing device - Google Patents

Printing device

Info

Publication number
JPS5698073A
JPS5698073A JP74580A JP74580A JPS5698073A JP S5698073 A JPS5698073 A JP S5698073A JP 74580 A JP74580 A JP 74580A JP 74580 A JP74580 A JP 74580A JP S5698073 A JPS5698073 A JP S5698073A
Authority
JP
Japan
Prior art keywords
signal
liquid crystal
electrode
frequency
adverse
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.)
Granted
Application number
JP74580A
Other languages
Japanese (ja)
Other versions
JPS6040608B2 (en
Inventor
Haruo Nakamura
Mitsuo Nagata
Kenji Aoki
Sadatsugu Miura
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP55000745A priority Critical patent/JPS6040608B2/en
Priority to US06/220,484 priority patent/US4386836A/en
Publication of JPS5698073A publication Critical patent/JPS5698073A/en
Publication of JPS6040608B2 publication Critical patent/JPS6040608B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06K15/12—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers
    • G06K15/1238—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers simultaneously exposing more than one point
    • G06K15/1242—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers simultaneously exposing more than one point on one main scanning line
    • G06K15/1252—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers simultaneously exposing more than one point on one main scanning line using an array of light modulators, e.g. a linear array
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/032—Details of scanning heads ; Means for illuminating the original for picture information reproduction
    • H04N1/036—Details of scanning heads ; Means for illuminating the original for picture information reproduction for optical reproduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Signal Processing (AREA)
  • Facsimile Heads (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Projection-Type Copiers In General (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

PURPOSE:To realize miniaturization as well as increasing reliability of a printing device, by driving a liquid crystal light valve using a liquid crystal having the desired dielectric anisotropy with a 2-frequency switching signal. CONSTITUTION:The glass substrate 11 having the common electrode is opposed to the glass substrate 12 having the signal electrode, and a liquid crystal layer is held between these two substrata. Then these substrate are put between the polarizing plates which are orthogonal to each other to form a liquid crystal light valve. The dielectric anisotropy of the liquid crystal uses the nematic-type one which becomes positive and negative with the lower and higher frequencies then the cross frequency fc. Thus the liquid crystal molecule turns toward the electric field with application of the signal of low frequency fl and becomes vertical to the electric field direction with application of the signal of high frequency fh respectively. The polarizing directions are set orthogonal to each other on both surfaces of the liquid crystal layer having a twist nematic orientation, and thus the light is cut off with the signal fl and transmits with the signal fh respectively. The signal obtained by switching alternately the above two signals is applied to the common electrode with the adverse-phase fh to the fl applied to the signal electrode each. Then the adverse-phase signal to fh is applied to the signal electrode with the shutter open and the signal fl applied with the closed shutter respectively.
JP55000745A 1979-12-28 1980-01-08 lcd light bulb Expired JPS6040608B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP55000745A JPS6040608B2 (en) 1980-01-08 1980-01-08 lcd light bulb
US06/220,484 US4386836A (en) 1979-12-28 1980-12-29 Electro-photographic printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55000745A JPS6040608B2 (en) 1980-01-08 1980-01-08 lcd light bulb

Publications (2)

Publication Number Publication Date
JPS5698073A true JPS5698073A (en) 1981-08-07
JPS6040608B2 JPS6040608B2 (en) 1985-09-11

Family

ID=11482232

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55000745A Expired JPS6040608B2 (en) 1979-12-28 1980-01-08 lcd light bulb

Country Status (1)

Country Link
JP (1) JPS6040608B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0083253A2 (en) * 1981-12-28 1983-07-06 Seiko Epson Corporation Liquid crystal optical printing apparatus
EP0113840A2 (en) * 1982-12-22 1984-07-25 Fuji Xerox Co., Ltd. Reading, printing and copying device
US5448383A (en) * 1983-04-19 1995-09-05 Canon Kabushiki Kaisha Method of driving ferroelectric liquid crystal optical modulation device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63175821U (en) * 1987-04-15 1988-11-15

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50104043A (en) * 1974-01-11 1975-08-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50104043A (en) * 1974-01-11 1975-08-16

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0083253A2 (en) * 1981-12-28 1983-07-06 Seiko Epson Corporation Liquid crystal optical printing apparatus
EP0113840A2 (en) * 1982-12-22 1984-07-25 Fuji Xerox Co., Ltd. Reading, printing and copying device
US6091388A (en) * 1983-04-13 2000-07-18 Canon Kabushiki Kaisha Method of driving optical modulation device
US5696526A (en) * 1983-04-19 1997-12-09 Canon Kabushiki Kaisha Method of driving optical modulation device
US5565884A (en) * 1983-04-19 1996-10-15 Canon Kabushiki Kaisha Method of driving optical modulation device
US5592192A (en) * 1983-04-19 1997-01-07 Canon Kabushiki Kaisha Method of driving optical modulation device
US5621427A (en) * 1983-04-19 1997-04-15 Canon Kabushiki Kaisha Method of driving optical modulation device
US5696525A (en) * 1983-04-19 1997-12-09 Canon Kabushiki Kaisha Method of driving optical modulation device
US5548303A (en) * 1983-04-19 1996-08-20 Canon Kabushiki Kaisha Method of driving optical modulation device
US5790449A (en) * 1983-04-19 1998-08-04 Canon Kabushiki Kaisha Method of driving optical modulation device
US5812108A (en) * 1983-04-19 1998-09-22 Canon Kabushiki Kaisha Method of driving optical modulation device
US5825390A (en) * 1983-04-19 1998-10-20 Canon Kabushiki Kaisha Method of driving optical modulation device
US5831587A (en) * 1983-04-19 1998-11-03 Canon Kabushiki Kaisha Method of driving optical modulation device
US5841417A (en) * 1983-04-19 1998-11-24 Canon Kabushiki Kaisha Method of driving optical modulation device
US5886680A (en) * 1983-04-19 1999-03-23 Canon Kabushiki Kaisha Method of driving optical modulation device
US5448383A (en) * 1983-04-19 1995-09-05 Canon Kabushiki Kaisha Method of driving ferroelectric liquid crystal optical modulation device

Also Published As

Publication number Publication date
JPS6040608B2 (en) 1985-09-11

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