JPS5716467A - Electronic plain paper printer - Google Patents

Electronic plain paper printer

Info

Publication number
JPS5716467A
JPS5716467A JP9096480A JP9096480A JPS5716467A JP S5716467 A JPS5716467 A JP S5716467A JP 9096480 A JP9096480 A JP 9096480A JP 9096480 A JP9096480 A JP 9096480A JP S5716467 A JPS5716467 A JP S5716467A
Authority
JP
Japan
Prior art keywords
light
liquid crystal
fibers
crystals
common
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.)
Pending
Application number
JP9096480A
Other languages
Japanese (ja)
Inventor
Kazuo Morinaga
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP9096480A priority Critical patent/JPS5716467A/en
Publication of JPS5716467A publication Critical patent/JPS5716467A/en
Pending 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
    • G03G15/326—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 application of light, e.g. using a LED array
    • 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
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/04036—Details of illuminating systems, e.g. lamps, reflectors
    • G03G15/04045—Details of illuminating systems, e.g. lamps, reflectors for exposing image information provided otherwise than by directly projecting the original image onto the photoconductive recording material, e.g. digital copiers
    • G03G15/04054—Details of illuminating systems, e.g. lamps, reflectors for exposing image information provided otherwise than by directly projecting the original image onto the photoconductive recording material, e.g. digital copiers by LED arrays

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection-Type Copiers In General (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE:To use a light source for each optical fiber in common, to enhance optical output, dividing a liquid crystal and arranging the divided crystals, and to express fine letters such as chinese characters, by providing the liquid crystals for transmitting and intercepting light in each optical fiber tube, and controlling them in accordance with letter signals. CONSTITUTION:A light emitting diode 21 having a PN junction is provided between a positive electrode 22 and a negative electrode 23, this light falls on the upper end of each fiber tube 20, passes through a liquid crystal plate 24 on its way, and illuminates each electrostatic drum to form a given exposed pattern. In the conventional method, these fibers 20 are made fine, the diodes 20 are necessary for each of the fibers, so the light quantity used to be small. In this invention method, a cover part 26 for always intercepting light passing through and by the liquid crystal 25 is provided. This crystal 25 corresponds to one image element, permitting the fiber 20 to be thick, the light source to be used in common, and an intense light to be usable. When needed, these liquid crystals may be arranged in a matrix.
JP9096480A 1980-07-03 1980-07-03 Electronic plain paper printer Pending JPS5716467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9096480A JPS5716467A (en) 1980-07-03 1980-07-03 Electronic plain paper printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9096480A JPS5716467A (en) 1980-07-03 1980-07-03 Electronic plain paper printer

Publications (1)

Publication Number Publication Date
JPS5716467A true JPS5716467A (en) 1982-01-27

Family

ID=14013174

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9096480A Pending JPS5716467A (en) 1980-07-03 1980-07-03 Electronic plain paper printer

Country Status (1)

Country Link
JP (1) JPS5716467A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6414877U (en) * 1987-07-17 1989-01-25

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5086932A (en) * 1973-12-01 1975-07-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5086932A (en) * 1973-12-01 1975-07-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6414877U (en) * 1987-07-17 1989-01-25
JPH0516371Y2 (en) * 1987-07-17 1993-04-28

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