EP2592483A3 - Writing device, image forming apparatus, and writing method - Google Patents

Writing device, image forming apparatus, and writing method Download PDF

Info

Publication number
EP2592483A3
EP2592483A3 EP12184257.9A EP12184257A EP2592483A3 EP 2592483 A3 EP2592483 A3 EP 2592483A3 EP 12184257 A EP12184257 A EP 12184257A EP 2592483 A3 EP2592483 A3 EP 2592483A3
Authority
EP
European Patent Office
Prior art keywords
writing
signal
image forming
forming apparatus
binary
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
EP12184257.9A
Other languages
German (de)
French (fr)
Other versions
EP2592483A2 (en
EP2592483B1 (en
Inventor
Naoichi Ishikawa
Takeshi Iwasaki
Yuya Ogawa
Taro Komura
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
Publication of EP2592483A2 publication Critical patent/EP2592483A2/en
Publication of EP2592483A3 publication Critical patent/EP2592483A3/en
Application granted granted Critical
Publication of EP2592483B1 publication Critical patent/EP2592483B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G03G15/04—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
    • 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
    • G03G15/043—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 with means for controlling illumination or exposure

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Facsimile Heads (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Image Processing (AREA)

Abstract

In an embodiment, a writing device receives a binary signal in accordance with image data, and writes an image based on the signal. The writing device includes a multiple-value unit (300) and a writing unit (500). The multiple-value unit (300) outputs a multiple-value signal based on the received binary signal. The number of the multiple values is an integral multiple of the binary. The writing unit (500) writes a binary image having a lager resolution than the image data based on the multiple-value signal.
EP12184257.9A 2011-09-15 2012-09-13 Writing device, image forming apparatus, and writing method Active EP2592483B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011202400 2011-09-15
JP2012191982A JP6127414B2 (en) 2011-09-15 2012-08-31 Writing apparatus, image forming apparatus, and writing method

Publications (3)

Publication Number Publication Date
EP2592483A2 EP2592483A2 (en) 2013-05-15
EP2592483A3 true EP2592483A3 (en) 2016-09-28
EP2592483B1 EP2592483B1 (en) 2021-11-17

Family

ID=47257374

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12184257.9A Active EP2592483B1 (en) 2011-09-15 2012-09-13 Writing device, image forming apparatus, and writing method

Country Status (2)

Country Link
EP (1) EP2592483B1 (en)
JP (1) JP6127414B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07212573A (en) * 1994-01-13 1995-08-11 Oki Electric Ind Co Ltd Resolution conversion device for binary picture
US20030107754A1 (en) * 2001-12-11 2003-06-12 Fujitsu Limited image data conversion method and apparatus

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04371860A (en) * 1991-06-21 1992-12-24 Ricoh Co Ltd Image forming device
JPH0691944A (en) * 1992-09-17 1994-04-05 Matsushita Electric Ind Co Ltd Image forming device
JPH099038A (en) * 1995-06-19 1997-01-10 Canon Inc Picture processor and picture processing method
JPH10285359A (en) * 1997-04-07 1998-10-23 Ricoh Co Ltd Image-forming device
JP2001232852A (en) * 2000-02-25 2001-08-28 Konica Corp Image forming apparatus, method for adjusting light quantity and method for correcting light quantity
JP2002330282A (en) * 2001-05-02 2002-11-15 Murata Mach Ltd Image forming device
JP2004017503A (en) * 2002-06-17 2004-01-22 Ricoh Co Ltd Digital light emitting element writing device
JP2004050679A (en) * 2002-07-22 2004-02-19 Ricoh Co Ltd Optical writing device and image formation apparatus
JP4166545B2 (en) * 2002-10-07 2008-10-15 株式会社リコー Optical writing device
JP3737471B2 (en) * 2002-11-18 2006-01-18 株式会社リコー Image processing method and image processing system
JP2004216709A (en) * 2003-01-14 2004-08-05 Ricoh Co Ltd Image writing unit
JP4452297B2 (en) * 2007-08-30 2010-04-21 株式会社沖データ Image forming apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07212573A (en) * 1994-01-13 1995-08-11 Oki Electric Ind Co Ltd Resolution conversion device for binary picture
US20030107754A1 (en) * 2001-12-11 2003-06-12 Fujitsu Limited image data conversion method and apparatus

Also Published As

Publication number Publication date
EP2592483A2 (en) 2013-05-15
JP2013075514A (en) 2013-04-25
EP2592483B1 (en) 2021-11-17
JP6127414B2 (en) 2017-05-17

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