EP0264562A2 - Dispositif pour la lecture densitométrique d'un ruban de mesure dans les machines d'impression - Google Patents

Dispositif pour la lecture densitométrique d'un ruban de mesure dans les machines d'impression Download PDF

Info

Publication number: EP0264562A2
Authority: EP; European Patent Office
Prior art keywords: measuring; density; measuring field; field strip; measuring head
Prior art date: 1986-09-13
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

EP87111628A

Other languages

German (de)

English (en)

Other versions

EP0264562B1 (fr

EP0264562A3 (en

Inventor

Claus Dipl.-Ing. Simeth

Peter Dipl.-Ing. Schramm

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.)

Manroland AG

Original Assignee

MAN Roland Druckmaschinen AG

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.)

1986-09-13

Filing date

1987-08-11

Publication date

1988-04-27

1987-08-11 Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG

1987-08-11 Priority to AT87111628T priority Critical patent/ATE63858T1/de

1988-04-27 Publication of EP0264562A2 publication Critical patent/EP0264562A2/fr

1988-12-21 Publication of EP0264562A3 publication Critical patent/EP0264562A3/de

1991-05-29 Application granted granted Critical

1991-05-29 Publication of EP0264562B1 publication Critical patent/EP0264562B1/fr

2007-08-11 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0036—Devices for scanning or checking the printed matter for quality control

Definitions

the invention relates to a device on printing presses for densitometric detection of a measuring field strip printed on a bridge arch, which can be scanned by means of a density measuring head moved in a guide along a longitudinal of the measuring field strip.
the printed sheets with printed measuring field strips must be placed on the measuring table in a precisely aligned manner, since otherwise if the strips and the density measuring head guide do not run exactly parallel there is a risk that the measuring head will move out of the area of the measuring fields.
errors in parallelism can also occur during copying if the measuring field strip has not been mounted sufficiently straight. Even a warping of the printing sheet used by the printing process can bring malfunctions, as can incorrect application of the printing sheet on the measuring table.
the object of the invention is to carry out a densitometric detection of a measuring field strip even when the measuring field strip and the density measuring head travel direction are not exactly parallel.
the color measuring system consists of a measuring table 1 on which a density measuring head 2 travels along a suction bar 3.
the suction bar 3 holds the sheet 4 placed on the measuring table 1 with the measuring field strip 5 printed thereon in its position.
the printed sheet 4 is placed on the table 1 so that the measuring spot 6 (FIG. 2) acted upon by the density measuring head 2 lies exactly on the measuring field strip 5 during traversing.
the density measuring head 2 contains eight transducers 7. These are arranged next to one another transversely to the measuring field strip 5, accordingly eight measuring spots 8 to 15 extend transversely. According to the assignment in FIG as well as at the measurement spot 14, 15, whereas the measurement spots 11, 12 and 13 will generate maximum density values and a density value between the measurement spot 10 will be measured.
two maximum values are selected by comparing in a comparator circuit 16 and added up in an evaluation circuit 17 and output to a display 18.
a signal for stopping the drive 19 of the density measuring head 2 or for indicating 20 an incorrect measurement can also be output. The latter occurs when a high density value is already determined at an edge measurement spot 8, 15.
FIG. 4 shows transducers 7 arranged next to one another in a density measuring head 2 with corresponding light sources 24.
Each transducer 7 has, according to FIG. 5, diaphragms 21, a photo element 22 and an electronic circuit 23.

Landscapes

Engineering & Computer Science (AREA)
Quality & Reliability (AREA)
Accessory Devices And Overall Control Thereof (AREA)
Inking, Control Or Cleaning Of Printing Machines (AREA)
Investigating Or Analysing Materials By Optical Means (AREA)
Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

EP87111628A 1986-09-13 1987-08-11 Dispositif pour la lecture densitométrique d'un ruban de mesure dans les machines d'impression Expired - Lifetime EP0264562B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT87111628T ATE63858T1 (de)	1986-09-13	1987-08-11	Vorrichtung an druckmaschinen zur densitometrischen erfassung eines messfeldstreifens.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3631204		1986-09-13
DE3631204A DE3631204C2 (de)	1986-09-13	1986-09-13	Vorrichtung an Druckmaschinen zur densitometrischen Erfassung eines Meßfeldstreifens

Publications (3)

Publication Number	Publication Date
EP0264562A2 true EP0264562A2 (fr)	1988-04-27
EP0264562A3 EP0264562A3 (en)	1988-12-21
EP0264562B1 EP0264562B1 (fr)	1991-05-29

Family

ID=6309523

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP87111628A Expired - Lifetime EP0264562B1 (fr)	1986-09-13	1987-08-11	Dispositif pour la lecture densitométrique d'un ruban de mesure dans les machines d'impression

Country Status (5)

Country	Link
US (1)	US4806002A (fr)
EP (1)	EP0264562B1 (fr)
JP (1)	JPH0627704B2 (fr)
AT (1)	ATE63858T1 (fr)
DE (2)	DE3631204C2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3738850A1 (de) *	1987-11-16	1989-05-24	Roland Man Druckmasch	Verfahren zur automatischen positionsfindung von druckkontrollstreifen fuer automatisch messende farbdichtemessanlagen
US5078497A (en) *	1989-08-25	1992-01-07	Xerox Corporation	Densitometer for a liquid developer material
US5119132A (en) *	1990-10-24	1992-06-02	Xerox Corporation	Densitometer and circuitry with improved measuring capabilities of marking particle density on a photoreceptor
DE29721199U1 (de) *	1997-11-29	1998-01-29	Man Roland Druckmaschinen Ag, 63069 Offenbach	Meßsystem
DE19844500A1 (de)	1998-09-29	2000-03-30	Roche Diagnostics Gmbh	Verfahren zur photometrischen Auswertung von Testelementen
US6847451B2 (en) *	2002-05-01	2005-01-25	Lifescan, Inc.	Apparatuses and methods for analyte concentration determination
US7636163B2 (en)	2007-07-23	2009-12-22	X-Rite, Inc.	Color measurement device with error detection

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3567923A (en) *	1968-04-03	1971-03-02	Hurlectron Inc	System for monitoring and controlling the color density of ink during printing
US3756725A (en) *	1970-10-12	1973-09-04	Harris Intertype Corp	Measurement and control of ink density
JPS498312A (fr) *	1972-05-13	1974-01-24
US3995958A (en) *	1975-07-21	1976-12-07	Hallmark Cards, Incorporated	Automatic densitometer and method of color control in multi-color printing
US4237616A (en) *	1978-10-13	1980-12-09	Tobias Philip E	Scanning path alignment arrangement
DD158758A1 (de) *	1981-05-04	1983-02-02	Eva Luebbe	Einrichtung zur erfassung und auswertung der zonalen farbdichte von bedruckstoffen
US4512662A (en) *	1981-07-06	1985-04-23	Tobias Philip E	Plate scanner for printing plates
EP0114914B1 (fr) *	1983-01-29	1987-04-22	M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft	Dispositif pour détecter et évaluer des bandes de mesure colorimétriques sur une feuille d'impression
DE3468367D1 (en) *	1983-11-04	1988-02-11	Gretag Ag	Method and device for judging the printing quality of a printed object, preferably printed by an offset printing machine, and offset printing machine provided with such a device
ATE58336T1 (de) *	1983-12-19	1990-11-15	Gretag Ag	Verfahren, vorrichtung und farbmessstreifen fuer die druckqualitaetsbeurteilung.

1986
- 1986-09-13 DE DE3631204A patent/DE3631204C2/de not_active Expired - Fee Related
1987
- 1987-08-11 DE DE8787111628T patent/DE3770403D1/de not_active Expired - Lifetime
- 1987-08-11 EP EP87111628A patent/EP0264562B1/fr not_active Expired - Lifetime
- 1987-08-11 AT AT87111628T patent/ATE63858T1/de not_active IP Right Cessation
- 1987-09-11 JP JP62226757A patent/JPH0627704B2/ja not_active Expired - Lifetime
- 1987-09-14 US US07/096,859 patent/US4806002A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
JPH0627704B2 (ja)	1994-04-13
DE3631204C2 (de)	1993-11-25
ATE63858T1 (de)	1991-06-15
EP0264562B1 (fr)	1991-05-29
JPS6371638A (ja)	1988-04-01
DE3770403D1 (de)	1991-07-04
EP0264562A3 (en)	1988-12-21
DE3631204A1 (de)	1988-03-24
US4806002A (en)	1989-02-21

Legal Events

Date	Code	Title	Description
1988-03-12	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
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1989-01-11	17P	Request for examination filed	Effective date: 19881114
1990-07-25	17Q	First examination report despatched	Effective date: 19900613
1991-02-21	ITF	It: translation for a ep patent filed
1991-04-12	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
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1991-07-17	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1992-04-02	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1992-04-02	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1992-05-20	26N	No opposition filed
1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 87111628.1
1995-07-13	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 19950713 Year of fee payment: 9
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DE3719766C2 (fr)	1990-07-19
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