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JPS5726875A - Electrophotographic type printer device - Google Patents

Electrophotographic type printer device

Info

Publication number
JPS5726875A
JPS5726875A JP10049880A JP10049880A JPS5726875A JP S5726875 A JPS5726875 A JP S5726875A JP 10049880 A JP10049880 A JP 10049880A JP 10049880 A JP10049880 A JP 10049880A JP S5726875 A JPS5726875 A JP S5726875A
Authority
JP
Japan
Prior art keywords
photoreceptor
shape
light emitting
picture elements
major axis
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
JP10049880A
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 JP10049880A priority Critical patent/JPS5726875A/en
Publication of JPS5726875A publication Critical patent/JPS5726875A/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)
  • Dot-Matrix Printers And Others (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Projection-Type Copiers In General (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To improve recording quality by forming the shape of light emitting diodes or light emitting windows into an elliptical shape having a major axis in the direction perpendicular to the moving direction of a photoreceptor. CONSTITUTION:Light emitting window 7 assuming an elliptical shape are provided so that picture elements 8 are formed on a photoreceptor 5. If the shape of the windows 7 is made into such an elliptical shape having a major axis in the direction perpendicular to the moving direction of the photoreceptor 5, the distance where the photoreceptor 5 moves during light emission time and the ratio of the major axis to the minor axis are negated, resulting in that the picture elements 8 of roughly a circular shape are obtained. Therefore, the margins between the picture elements is assured, and the recording wherein the connection of diagonal lines is not unnatural is obtained.
JP10049880A 1980-07-24 1980-07-24 Electrophotographic type printer device Pending JPS5726875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10049880A JPS5726875A (en) 1980-07-24 1980-07-24 Electrophotographic type printer device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10049880A JPS5726875A (en) 1980-07-24 1980-07-24 Electrophotographic type printer device

Publications (1)

Publication Number Publication Date
JPS5726875A true JPS5726875A (en) 1982-02-13

Family

ID=14275589

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10049880A Pending JPS5726875A (en) 1980-07-24 1980-07-24 Electrophotographic type printer device

Country Status (1)

Country Link
JP (1) JPS5726875A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583885A (en) * 1981-07-01 1983-01-10 Nippon Telegr & Teleph Corp <Ntt> Light print head
JPS6090783A (en) * 1983-10-25 1985-05-21 Canon Inc Optical printer
JPS60154267A (en) * 1984-01-24 1985-08-13 Ricoh Co Ltd Image recording method
JPH01304964A (en) * 1988-06-02 1989-12-08 Canon Inc Image forming apparatus
JPH02103159A (en) * 1988-10-12 1990-04-16 Fuji Xerox Co Ltd Optical writing head
JPH02219075A (en) * 1988-12-07 1990-08-31 Westinghouse Electric Corp <We> Electrophotographic type image forming station and image formation
JP2009061643A (en) * 2007-09-05 2009-03-26 Casio Comput Co Ltd Exposure device and image forming apparatus
US7898562B2 (en) 2007-09-05 2011-03-01 Casio Computer Co., Ltd. Exposing device and image forming apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119331A (en) * 1976-03-31 1977-10-06 Canon Inc Laser recording device
JPS5551573A (en) * 1978-10-10 1980-04-15 Ibm Thermal printer
JPS5563269A (en) * 1978-11-07 1980-05-13 Matsushita Electric Ind Co Ltd Recording head

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119331A (en) * 1976-03-31 1977-10-06 Canon Inc Laser recording device
JPS5551573A (en) * 1978-10-10 1980-04-15 Ibm Thermal printer
JPS5563269A (en) * 1978-11-07 1980-05-13 Matsushita Electric Ind Co Ltd Recording head

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583885A (en) * 1981-07-01 1983-01-10 Nippon Telegr & Teleph Corp <Ntt> Light print head
JPS6090783A (en) * 1983-10-25 1985-05-21 Canon Inc Optical printer
JPS60154267A (en) * 1984-01-24 1985-08-13 Ricoh Co Ltd Image recording method
JPH01304964A (en) * 1988-06-02 1989-12-08 Canon Inc Image forming apparatus
JPH02103159A (en) * 1988-10-12 1990-04-16 Fuji Xerox Co Ltd Optical writing head
JPH02219075A (en) * 1988-12-07 1990-08-31 Westinghouse Electric Corp <We> Electrophotographic type image forming station and image formation
JP2009061643A (en) * 2007-09-05 2009-03-26 Casio Comput Co Ltd Exposure device and image forming apparatus
JP4548462B2 (en) * 2007-09-05 2010-09-22 カシオ計算機株式会社 Exposure apparatus and image forming apparatus
US7898562B2 (en) 2007-09-05 2011-03-01 Casio Computer Co., Ltd. Exposing device and image forming apparatus
US8199182B2 (en) 2007-09-05 2012-06-12 Casio Computer Co., Ltd. Exposing device and image forming apparatus

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