EP0049146A1 - Beleuchtungseinrichtung zum Eliminieren des grauen Randes in einer Kopiervorrichtung - Google Patents

Beleuchtungseinrichtung zum Eliminieren des grauen Randes in einer Kopiervorrichtung Download PDF

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Publication number
EP0049146A1
EP0049146A1 EP81304467A EP81304467A EP0049146A1 EP 0049146 A1 EP0049146 A1 EP 0049146A1 EP 81304467 A EP81304467 A EP 81304467A EP 81304467 A EP81304467 A EP 81304467A EP 0049146 A1 EP0049146 A1 EP 0049146A1
Authority
EP
European Patent Office
Prior art keywords
light
illumination
transmitter
illumination arrangement
imaging plane
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
EP81304467A
Other languages
English (en)
French (fr)
Other versions
EP0049146B1 (de
EP0049146B2 (de
Inventor
Richard C. Boykin
Paul H. Stiebitz
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.)
Xerox Corp
Original Assignee
Xerox 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26887168&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0049146(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US06/191,559 external-priority patent/US4382672A/en
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of EP0049146A1 publication Critical patent/EP0049146A1/de
Publication of EP0049146B1 publication Critical patent/EP0049146B1/de
Application granted granted Critical
Publication of EP0049146B2 publication Critical patent/EP0049146B2/de
Expired legal-status Critical Current

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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
    • G03G15/045—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 charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas
    • G03G15/047—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 charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas for discharging non-image areas

Definitions

  • Figure 6 illustrates principal ray A incident upon surface 36a located in the position shown in Figure 5 and in a second, dotted position 36a'.
  • Principal ray A is incident on surface 36a' at an angle ⁇ '.
  • the ray is refracted from surface 36a' at an angle ⁇ ' in accordance with Snells law

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
EP19810304467 1980-09-29 1981-09-28 Beleuchtungseinrichtung zum Eliminieren des grauen Randes in einer Kopiervorrichtung Expired EP0049146B2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US06/191,559 US4382672A (en) 1980-09-29 1980-09-29 Illumination arrangement for elimination of gray borders in copying device
US191559 1980-09-29
US24924481A 1981-03-30 1981-03-30
US249244 1981-03-30

Publications (3)

Publication Number Publication Date
EP0049146A1 true EP0049146A1 (de) 1982-04-07
EP0049146B1 EP0049146B1 (de) 1985-11-21
EP0049146B2 EP0049146B2 (de) 1988-06-08

Family

ID=26887168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810304467 Expired EP0049146B2 (de) 1980-09-29 1981-09-28 Beleuchtungseinrichtung zum Eliminieren des grauen Randes in einer Kopiervorrichtung

Country Status (2)

Country Link
EP (1) EP0049146B2 (de)
DE (1) DE3173011D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0234575A2 (de) * 1986-02-28 1987-09-02 Mita Industrial Co., Ltd. Bilderzeugungsvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1296955A (de) * 1970-06-23 1972-11-22
US3981575A (en) * 1974-06-22 1976-09-21 Minolta Camera Kabushiki Kaisha Photocopier illumination device
GB2031612A (en) * 1978-09-01 1980-04-23 Oce Nederland Bv Lighting arrengement for discharging areas of photoconductive webs
GB2045450A (en) * 1979-03-09 1980-10-29 Canon Kk Line-by-line photocopying

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1296955A (de) * 1970-06-23 1972-11-22
US3981575A (en) * 1974-06-22 1976-09-21 Minolta Camera Kabushiki Kaisha Photocopier illumination device
GB2031612A (en) * 1978-09-01 1980-04-23 Oce Nederland Bv Lighting arrengement for discharging areas of photoconductive webs
GB2045450A (en) * 1979-03-09 1980-10-29 Canon Kk Line-by-line photocopying

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0234575A2 (de) * 1986-02-28 1987-09-02 Mita Industrial Co., Ltd. Bilderzeugungsvorrichtung
EP0234575A3 (en) * 1986-02-28 1988-12-14 Mita Industrial Co. Ltd. Image generating device
US4814815A (en) * 1986-02-28 1989-03-21 Mita Industrial Co., Ltd. Image generating device having a reflecting plate for eliminating charge on a portion of the photoreceptor of an electrophotographic copying machine

Also Published As

Publication number Publication date
EP0049146B1 (de) 1985-11-21
DE3173011D1 (en) 1986-01-02
EP0049146B2 (de) 1988-06-08

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