EP0448039A3 - Image forming apparatus - Google Patents

Image forming apparatus Download PDF

Info

Publication number: EP0448039A3
Authority: EP; European Patent Office
Prior art keywords: image forming; forming apparatus; image; forming
Prior art date: 1990-03-19
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

EP19910104237

Other versions

EP0448039A2 (en

EP0448039B1 (en

Inventor

Yoshiyuki Fujiwara

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.)

Kyocera Mita Industrial Co Ltd

Original Assignee

Mita Industrial 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.)

1990-03-19

Filing date

1991-03-19

Publication date

1992-12-02

1991-03-19 Application filed by Mita Industrial Co Ltd filed Critical Mita Industrial Co Ltd

1991-09-25 Publication of EP0448039A2 publication Critical patent/EP0448039A2/en

1992-12-02 Publication of EP0448039A3 publication Critical patent/EP0448039A3/en

1995-11-15 Application granted granted Critical

1995-11-15 Publication of EP0448039B1 publication Critical patent/EP0448039B1/en

2011-03-19 Anticipated expiration legal-status Critical

Status Expired - Lifetime 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
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0896—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894
- 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
- G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
- G03G15/0105—Details of unit
- G03G15/0126—Details of unit using a solid developer
- 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
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
- G03G15/0849—Detection or control means for the developer concentration

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Dry Development In Electrophotography (AREA)
Color Electrophotography (AREA)
Control Or Security For Electrophotography (AREA)

EP19910104237 1990-03-19 1991-03-19 Electrographic image forming apparatus Expired - Lifetime EP0448039B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP68765/90		1990-03-19
JP2068765A JPH03267968A (en)	1990-03-19	1990-03-19	Image forming device

Publications (3)

Publication Number	Publication Date
EP0448039A2 EP0448039A2 (en)	1991-09-25
EP0448039A3 true EP0448039A3 (en)	1992-12-02
EP0448039B1 EP0448039B1 (en)	1995-11-15

Family

ID=13383160

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19910104237 Expired - Lifetime EP0448039B1 (en)	1990-03-19	1991-03-19	Electrographic image forming apparatus

Country Status (3)

Country	Link
EP (1)	EP0448039B1 (en)
JP (1)	JPH03267968A (en)
DE (1)	DE69114556T2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US7136831B2 (en) *	2001-04-27	2006-11-14	Canon Kabushiki Kaisha	Collection information management server and collection information management method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2596536A1 (en) *	1986-03-31	1987-10-02	Toshiba Kk	IMAGING APPARATUS FOR COPIER AND PRINTER
US4885611A (en) *	1987-02-26	1989-12-05	Minolta Camera Kabushika Kaisha	Multicolor image forming apparatus
US4897690A (en) *	1987-09-30	1990-01-30	Minolta Camera Kabushiki Kaisha	Image forming apparatus
EP0357432A2 (en) *	1988-08-31	1990-03-07	Mita Industrial Co., Ltd.	A multi-color developing device for an image forming apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS60164776A (en) *	1984-02-08	1985-08-27	Hitachi Ltd	Developing device
JPH0679171B2 (en) *	1984-12-26	1994-10-05	キヤノン株式会社	Image forming device
JPS6385771A (en) *	1986-09-30	1988-04-16	Mita Ind Co Ltd	Copying device
JPS63155062A (en) *	1986-12-19	1988-06-28	Toshiba Corp	Image forming device
JPH0682244B2 (en) *	1987-08-03	1994-10-19	キヤノン株式会社	Process cartridge and image forming apparatus
JPS63206774A (en) *	1987-02-24	1988-08-26	Minolta Camera Co Ltd	Image forming device
JPH0820841B2 (en) *	1987-03-03	1996-03-04	三田工業株式会社	Mounting detection device for process unit
JP2564871B2 (en) *	1988-01-13	1996-12-18	ミノルタ株式会社	Optional toner replenisher for image forming device

1990
- 1990-03-19 JP JP2068765A patent/JPH03267968A/en active Pending
1991
- 1991-03-19 DE DE1991614556 patent/DE69114556T2/en not_active Expired - Fee Related
- 1991-03-19 EP EP19910104237 patent/EP0448039B1/en not_active Expired - Lifetime

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2596536A1 (en) *	1986-03-31	1987-10-02	Toshiba Kk	IMAGING APPARATUS FOR COPIER AND PRINTER
US4885611A (en) *	1987-02-26	1989-12-05	Minolta Camera Kabushika Kaisha	Multicolor image forming apparatus
US4897690A (en) *	1987-09-30	1990-01-30	Minolta Camera Kabushiki Kaisha	Image forming apparatus
EP0357432A2 (en) *	1988-08-31	1990-03-07	Mita Industrial Co., Ltd.	A multi-color developing device for an image forming apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN. vol. 17, no. 4, September 1974, NEW YORK US page 1096 G.T.WILLIAMS 'toner control interlocks' *
PATENT ABSTRACTS OF JAPAN vol. 13, no. 464 (P-947)20 October 1989 & JP-A-01 180 569 ( MINOLTA CAMERA ) *

Also Published As

Publication number	Publication date
EP0448039A2 (en)	1991-09-25
DE69114556D1 (en)	1995-12-21
EP0448039B1 (en)	1995-11-15
DE69114556T2 (en)	1996-04-11
JPH03267968A (en)	1991-11-28

Legal Events

Date	Code	Title	Description
1991-08-09	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
1991-09-25	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE FR GB IT
1992-10-15	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1992-12-02	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): DE FR GB IT
1993-07-21	17P	Request for examination filed	Effective date: 19930521
1994-05-18	17Q	First examination report despatched	Effective date: 19940331
1995-09-29	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1995-10-23	ITF	It: translation for a ep patent filed	Owner name: BARZANO' E ZANARDO MILANO S.P.A.
1995-11-15	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB IT
1995-12-21	REF	Corresponds to:	Ref document number: 69114556 Country of ref document: DE Date of ref document: 19951221
1996-03-08	ET	Fr: translation filed
1996-09-20	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1996-09-20	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1996-11-06	26N	No opposition filed
1997-03-10	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19970310 Year of fee payment: 7
1997-03-13	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19970313 Year of fee payment: 7
1997-04-01	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19970401 Year of fee payment: 7
1998-03-19	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: 19980319
1998-03-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19980331
1998-11-11	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19980319
1998-12-01	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: 19981201
1998-12-31	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
2005-03-19	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050319

Publication	Publication Date	Title
EP0463743A3 (en)	1992-03-25	An image forming apparatus
EP0442527A3 (en)	1992-10-07	An image forming apparatus
EP0487046A3 (en)	1993-03-03	Image forming apparatus
EP0473180A3 (en)	1992-03-18	Image forming apparatus
EP0437097A3 (en)	1992-05-13	Image forming apparatus
EP0482641A3 (en)	1993-08-18	Image forming apparatus
EP0468751A3 (en)	1993-03-24	Image forming apparatus
EP0480454A3 (en)	1992-09-30	An image forming apparatus
EP0468749A3 (en)	1992-12-30	An image forming apparatus
EP0500134A3 (en)	1992-12-30	Image forming apparatus
EP0468752A3 (en)	1993-04-07	Image forming apparatus
EP0443494A3 (en)	1993-04-07	Image forming apparatus
HK105696A (en)	1996-06-28	Image forming apparatus
EP0468750A3 (en)	1993-03-24	An image forming apparatus
EP0458572A3 (en)	1993-01-27	Image forming apparatus
EP0488151A3 (en)	1992-06-24	Image forming apparatus
EP0482654A3 (en)	1993-01-13	Image forming apparatus
EP0488652A3 (en)	1993-05-26	An image forming apparatus
EP0507055A3 (en)	1993-02-03	Image forming apparatus
EP0461671A3 (en)	1993-07-07	Image forming apparatus
EP0487040A3 (en)	1993-06-16	Image forming apparatus
HK1011746A1 (en)	1999-07-16	Image forming apparatus
EP0503543A3 (en)	1994-09-07	Image forming apparatus
EP0473788A4 (en)	1993-05-19	Image forming apparatus
EP0451770A3 (en)	1992-08-05	Image forming apparatus