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

Beleuchtungseinrichtung zum Eliminieren des grauen Randes in einer Kopiervorrichtung Download PDF

Info

Publication number: EP0049146A1
Authority: EP; European Patent Office
Prior art keywords: light; illumination; transmitter; illumination arrangement; imaging plane
Prior art date: 1980-09-29
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.)

1980-09-29

Filing date

1981-09-28

Publication date

1982-04-07

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.

1980-09-29 Priority claimed from US06/191,559 external-priority patent/US4382672A/en

1981-09-28 Application filed by Xerox Corp filed Critical Xerox Corp

1982-04-07 Publication of EP0049146A1 publication Critical patent/EP0049146A1/de

1985-11-21 Publication of EP0049146B1 publication Critical patent/EP0049146B1/de

1988-06-08 Application granted granted Critical

1988-06-08 Publication of EP0049146B2 publication Critical patent/EP0049146B2/de

Status Expired legal-status Critical Current

Links

238000005286 illumination Methods 0.000 title claims abstract description 33
230000008030 elimination Effects 0.000 title description 2
238000003379 elimination reaction Methods 0.000 title description 2
238000003384 imaging method Methods 0.000 claims abstract description 13
230000003287 optical effect Effects 0.000 abstract description 8
230000000694 effects Effects 0.000 abstract description 4
108091008695 photoreceptors Proteins 0.000 description 10
239000000463 material Substances 0.000 description 3
238000010586 diagram Methods 0.000 description 2
239000011521 glass Substances 0.000 description 2
238000013459 approach Methods 0.000 description 1
238000003491 array Methods 0.000 description 1
238000010276 construction Methods 0.000 description 1
230000008878 coupling Effects 0.000 description 1
238000010168 coupling process Methods 0.000 description 1
238000005859 coupling reaction Methods 0.000 description 1
238000013461 design Methods 0.000 description 1
238000011161 development Methods 0.000 description 1
239000005357 flat glass Substances 0.000 description 1
238000000034 method Methods 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
238000012634 optical imaging Methods 0.000 description 1

Images

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
US191559		1980-09-29
US06/191,559 US4382672A (en)	1980-09-29	1980-09-29	Illumination arrangement for elimination of gray borders in copying device
US24924481A	1981-03-30	1981-03-30
US249244		1994-05-25

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
EP0234575A3 (en) *	1986-02-28	1988-12-14	Mita Industrial Co. Ltd.	Image generating device

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

1981
- 1981-09-28 EP EP19810304467 patent/EP0049146B2/de not_active Expired
- 1981-09-28 DE DE8181304467T patent/DE3173011D1/de not_active Expired

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 (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
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
EP0049146B2 (de)	1988-06-08
DE3173011D1 (en)	1986-01-02

Legal Events

Date	Code	Title	Description
1982-02-06	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1982-04-07	AK	Designated contracting states	Designated state(s): DE FR GB
1983-02-09	17P	Request for examination filed	Effective date: 19821004
1985-09-20	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1985-11-21	AK	Designated contracting states	Designated state(s): DE FR GB
1985-12-27	ET	Fr: translation filed
1986-01-02	REF	Corresponds to:	Ref document number: 3173011 Country of ref document: DE Date of ref document: 19860102
1986-08-22	PLBI	Opposition filed	Free format text: ORIGINAL CODE: 0009260
1986-08-26	PLAB	Opposition data, opponent's data or that of the opponent's representative modified	Free format text: ORIGINAL CODE: 0009299OPPO
1986-10-08	26	Opposition filed	Opponent name: CANON INC. Effective date: 19860819
1986-10-15	R26	Opposition filed (corrected)	Opponent name: CANON KABUSHIKI KAISHA Effective date: 19860819
1988-04-23	PUAH	Patent maintained in amended form	Free format text: ORIGINAL CODE: 0009272
1988-04-23	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: PATENT MAINTAINED AS AMENDED
1988-06-08	27A	Patent maintained in amended form	Effective date: 19880608
1988-06-08	AK	Designated contracting states	Kind code of ref document: B2 Designated state(s): DE FR GB
1988-07-08	ET3	Fr: translation filed ** decision concerning opposition
1992-05-18	ITCP	It: supplementary protection certificate	Spc suppl protection certif: CCP 364
1998-09-09	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19980909 Year of fee payment: 18
1998-10-01	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19981001 Year of fee payment: 18
1998-10-05	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19981005 Year of fee payment: 18
1999-09-28	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990928
2000-05-17	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19990928
2000-05-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000531
2000-07-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000701
2000-08-04	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST

Publication	Publication Date	Title
EP0252709B1 (de)	1993-09-29	Projektionsapparat und Bildleseapparat, fähig zum Lesen eines projizierten Bildes
GB1602776A (en)	1981-11-18	Facetted reflector
US4118119A (en)	1978-10-03	Facetted edge fadeout reflector
US7538916B2 (en)	2009-05-26	Document lighting device, image reader, color document reader, and image forming device
EP0171980B1 (de)	1989-01-11	Ganzbild-Belichtungssystem für ein Kopiergerät
US7755811B2 (en)	2010-07-13	Document illuminator
JP2592192B2 (ja)	1997-03-19	文書走査装置用照射装置
US4783687A (en)	1988-11-08	Segmented filament light source with improved illumination output uniformity
US4382672A (en)	1983-05-10	Illumination arrangement for elimination of gray borders in copying device
EP0049146B1 (de)	1985-11-21	Beleuchtungseinrichtung zum Eliminieren des grauen Randes in einer Kopiervorrichtung
JP2005278132A (ja)	2005-10-06	原稿照明装置、画像読み取り装置、カラー原稿読み取り装置、画像形成装置、フィルムスキャナ、およびデジタルラボ
US4095895A (en)	1978-06-20	Method and means for preventing edge shadow effects during episcopic exposure of an original
US3212417A (en)	1965-10-19	Reflex exposure system
US4719493A (en)	1988-01-12	Imaging system including a segmented filament light source with improved illumination output uniformity
JP3662125B2 (ja)	2005-06-22	照明装置
EP1381215B1 (de)	2008-07-16	Beleuchtungseinrichtung und Bildsensor unter Verwendung derselben
US4351019A (en)	1982-09-21	Facetted reflector
JPS58168045A (ja)	1983-10-04	照明装置
US4564286A (en)	1986-01-14	Illumination device
US4204729A (en)	1980-05-27	Transmitting and copying machine
JPH059718Y2 (de)	1993-03-10
JPS5965831A (ja)	1984-04-14	原稿照明装置
JPS6129877A (ja)	1986-02-10	オ−バ−ヘツドプロジエクタ−
JP2553025Y2 (ja)	1997-11-05	露光装置
GB2122362A (en)	1984-01-11	Optical image projector