EP0235771B1 - Vorrichtung zum Aufladen, Belichten und Entwickeln von lichtempfindlichem Aufzeichnungsmaterial - Google Patents

Vorrichtung zum Aufladen, Belichten und Entwickeln von lichtempfindlichem Aufzeichnungsmaterial Download PDF

Info

Publication number: EP0235771B1
Authority: EP; European Patent Office
Prior art keywords: recording material; charging; development; exposure; charging device
Prior art date: 1986-03-05
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.): Expired - Lifetime

Application number

EP87102870A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP0235771A1 (de

Inventor

Georg Sader

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.)

Hoechst AG

Original Assignee

Hoechst 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.)

1986-03-05

Filing date

1987-02-28

Publication date

1990-07-25

1987-02-28 Application filed by Hoechst AG filed Critical Hoechst AG

1987-02-28 Priority to AT87102870T priority Critical patent/ATE55017T1/de

1987-09-09 Publication of EP0235771A1 publication Critical patent/EP0235771A1/de

1990-07-25 Application granted granted Critical

1990-07-25 Publication of EP0235771B1 publication Critical patent/EP0235771B1/de

2007-02-28 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/28—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning

Definitions

the invention relates to an apparatus for charging, exposing and developing photosensitive recording material, comprising a charging, exposure and developing device for dry or liquid toners, of which the charging and developing device can be moved over the recording material, the charging device and the developing device are arranged in a common plane parallel to the recording material and at a distance from one another.
references DE-A 2 421 661, JP-A 60 256 183, US-A 3 964 828 and DE-A 3 047 205 as well as Patent Abstracts of Japan, Volume 9, No. 90 (P 350) (1813), April 1985 each show an apparatus for charging, exposing and developing photosensitive recording material with a carriage which can be moved over the recording material and which includes the charging device, an exposure slot and the developing device next to one another, the charging and developing device in a common plane parallel to the recording material, and are arranged at a distance from each other.
the invention serves for the production of printing plates which are first charged, then exposed imagewise with a copy template and finally developed with liquid or dry toner. The desired number of print copies is then made from the printing plates.
an electrophotographic continuous copier for sheet-like recording material is known, with a transport device that transports the recording material through treatment devices arranged in series, as well as with a stacking device for the recording material and a suction gripping device for lifting the top sheet from the recording material stack and for feeding the Sheet to the transport device.
This consists of a transport carriage, on the underside of which a vacuum suction device is provided for holding the recording material.
DE-B 24 62 216 describes a device for the electrophotographic production of printing forms, with a transport device lifting the individual printing form from a stack in a sheet magazine, which consists of a transport carriage with a vacuum suction device and which transports the printing form to an exposure stage. As soon as the transport carriage is located above the exposure stage, it is lowered onto this and the vacuum application of the vacuum suction device is released, whereby the pressure plate is released and placed on the exposure stage.
the exposure stage has a vacuum suction plate which is subjected to negative pressure in order to firmly suction the pressure plate onto the exposure stage.
a corona charging station for the electrostatic charging of the printing plate is arranged on the front of the trolley and extends over the side of the trolley running transversely to the direction of movement.
a switch is actuated by which the corona charging station is switched on, which charges the printing plate electrostatically while the trolley is being moved back.
the charging station is switched off and the printing plate is exposed.
the template clamped in the template holder is indirectly illuminated within the exposure device by the radiation sources.
the shadow-free illuminated template is projected onto the printing plate.
the printing plate which carries the latent electrostatic image of the original on the top, is transported to a developing device, in which the development and fixing of the latent electrostatic image on the printing plate takes place in a known manner by means of liquid or dry toner.
the loading, the exposure and the development of the printing plates are carried out in separate work steps in the order given above, the devices used here also generally being housed in spatially separate building modules.
the known continuous copiers are generally designed up to the formats DIN A3 and B3.
An exposure device 17 shown schematically in FIG. 1 comprises a light box 15 and an imaging device, consisting of an optical system 13 with an objective system and an aperture 24, which are arranged together in an exposure bellows 16.
Inside the light box 15 there are light sources 25, for example fluorescent tubes, which illuminate a template 20 in a template holder 14.
light sources 25 for example fluorescent tubes, which illuminate a template 20 in a template holder 14.
the exposure device 17 is divided into a dark room 18 and a light room 26 by the exposure bellows 16.
the light box 15 with the template holder 14 is located in the light room 26, while the device 1 is arranged in the dark room 18.
the exposure bellows 16 with the diaphragm 24 and the optics 13 is arranged on a bracket 28 which can be moved along a spindle 27.
a mirror (not shown) can be arranged in the beam path, which deflects the radiation which strikes the illuminated template 20 through the exposure bellows 16, the diaphragm 24 and the optics 13 downwards by 90 °.
the device 1 is then not arranged vertically, as shown, but horizontally.
the charging device 7 and the developing device 11 are arranged in a common plane parallel to the recording material 3 and are at an adjustable distance from one another.
the charging device 7 is a corotron, known per se, with one or two wires.
the developing device 11 works either with liquid toner or with dry toner and is also a known component, which is neither shown nor described in detail.
the adjustable distance between the charging device 7 and the developing device 11 forms a slot 8 for the exposure of the recording material 2, which is primarily large-format printing plates, such as ELFASOLR printing plates with dimensions of 1410 x 1145 mm or larger, such as they are required for the large-format printing machines used for poster printing.
large-format printing plates such as ELFASOLR printing plates with dimensions of 1410 x 1145 mm or larger, such as they are required for the large-format printing machines used for poster printing.
a first opaque curtain 5 is attached to the charging device 7 and to a winding roll 3.
the take-up roll 3 is arranged at one end of the device 1, while another take-up roll 4 is located at the other end of the device 1 and is connected to a second opaque curtain 6, which in turn is attached to the developing device 11.
the winding rollers 3 and 4 allow the respective curtains, which are made of film or another suitable material, to be rolled up.
a slot diaphragm 9 or 10 is attached to both the charging device 7 and the developing device 11, which runs obliquely to the holder 12 for the printing plate.
the holder 12 contains a vacuum suction plate, not shown in detail, which sucks the recording material 2 flat by means of negative pressure.
the two slit diaphragms 9 and 10 converge in the direction of the recording material 2.
a connecting element 19 connects the charging device 7 to the developing device 11 in the area of the slot 8.
the first and second curtains 5 and 6 are each attached to that end of the charging and developing device 7 and 11 which is further away from the slot 8.
the connecting element 19 is, for example, a rope that can be wound onto a roll 21.
the roller 21 is attached near one end of the charging device 7 and can be fixed in its respective position.
the other end of the connecting element 19 is fixedly connected to the developing device 11.
the distance or the width of the slot 8 is set with the aid of the connecting element 19, in that a shorter or longer section of the connecting element 19 is wound onto the roller 21.
FIG. 2 shows a middle position of the slot 8 in relation to the recording material 2.
the charging device 7 is opposite the one end of the recording material 2, which is in the immediate vicinity of the take-up roll 4.
the charging device 7 and the developing device 11 are moved along guides 22, 23 at an adjustable speed.
the guides 22, 23 can be designed as rails which extend over the length of the device 1 on both sides and in which rollers of the charging device 7 and the developing device 11, not shown, roll.
the charging device 7 in the form of a corotron and the developing device 11, which works either with dry toner or with liquid toner, are arranged in such a way that a slot 8 with a variable width exists between them.
the device 1 In order to image a template on the recording material 2 in the form of a printing plate, the device 1 is guided over the printing plate at an adjustable speed, the required distance from the printing plate being able to be set, for example, by spacers (not shown).
the corotron of the charging device 7 charges the photosensitive surface of the printing plate to the required high voltage.
the exposure time for the individual Image sections is determined by the width of the slot 8.
the unexposed portions of the printing plate are developed by the toner of the developing device 11. Since the exposure is switched on during the entire recording process, the portions of the recording material 2 which may not yet be exposed to light or are no longer exposed are protected by the first and second opaque curtains 5 and 6.
the charging device 7, the developing device 11 and the exposure slit 8 during the entire imaging process in a fixed spatial relationship to one another, it is ensured that constant charging, exposure and development conditions prevail over the entire length of the recording material 2.

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Wet Developing In Electrophotography (AREA)
Discharging, Photosensitive Material Shape In Electrophotography (AREA)
Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Exposure Or Original Feeding In Electrophotography (AREA)
Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)

EP87102870A 1986-03-05 1987-02-28 Vorrichtung zum Aufladen, Belichten und Entwickeln von lichtempfindlichem Aufzeichnungsmaterial Expired - Lifetime EP0235771B1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT87102870T ATE55017T1 (de)	1986-03-05	1987-02-28	Vorrichtung zum aufladen, belichten und entwickeln von lichtempfindlichem aufzeichnungsmaterial.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3607124		1986-03-05
DE19863607124 DE3607124A1 (de)	1986-03-05	1986-03-05	Vorrichtung zum aufladen, belichten und entwickeln von lichtempfindlichem aufzeichnungsmaterial

Publications (2)

Publication Number	Publication Date
EP0235771A1 EP0235771A1 (de)	1987-09-09
EP0235771B1 true EP0235771B1 (de)	1990-07-25

Family

ID=6295493

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP87102870A Expired - Lifetime EP0235771B1 (de)	1986-03-05	1987-02-28	Vorrichtung zum Aufladen, Belichten und Entwickeln von lichtempfindlichem Aufzeichnungsmaterial

Country Status (4)

Country	Link
EP (1)	EP0235771B1 (es)
AT (1)	ATE55017T1 (es)
DE (2)	DE3607124A1 (es)
ES (1)	ES2016811B3 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE8902851U1 (de) *	1989-03-08	1989-06-29	Kempf, Georg-Ulrich, 2057 Wentorf	Vorrichtung zur Bildverarbeitung
DE8902850U1 (de) *	1989-03-08	1989-04-20	Kempf, Georg-Ulrich, 21465 Wentorf	Vorrichtung für die Bildverarbeitung von transparenten Vorlagen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3964828A (en) *	1972-12-29	1976-06-22	Ricoh Co., Ltd.	Apparatus for preparing electrophotographic microfilm
DE2421661C2 (de) *	1974-05-04	1982-05-13	Agfa-Gevaert Ag, 5090 Leverkusen	Elektrostatisches Kopiergerät
DE3047205A1 (de) *	1980-12-15	1982-07-22	Hoechst Ag, 6000 Frankfurt	Verarbeitungsstation zum aufladen, belichten und entwickeln von druckformen
JPS60256183A (ja) *	1984-06-01	1985-12-17	Fuji Xerox Co Ltd	電子写真装置の帯電露光現像装置

1986
- 1986-03-05 DE DE19863607124 patent/DE3607124A1/de not_active Withdrawn
1987
- 1987-02-28 EP EP87102870A patent/EP0235771B1/de not_active Expired - Lifetime
- 1987-02-28 ES ES87102870T patent/ES2016811B3/es not_active Expired - Lifetime
- 1987-02-28 AT AT87102870T patent/ATE55017T1/de not_active IP Right Cessation
- 1987-02-28 DE DE8787102870T patent/DE3763865D1/de not_active Expired - Fee Related

Also Published As

Publication number	Publication date
ATE55017T1 (de)	1990-08-15
DE3763865D1 (de)	1990-08-30
ES2016811B3 (es)	1990-12-01
DE3607124A1 (de)	1987-09-10
EP0235771A1 (de)	1987-09-09

Publication	Publication Date	Title
DE3542895C2 (es)	1993-03-11
DE4017777C2 (es)	1993-06-17
DE69012504T2 (de)	1995-04-06	Fusspedal-gesteuertes modulares Blattzuführungsgerät.
DE2801112C2 (de)	1985-11-21	Vorrichtung zum streifenweisen Abtasten einer Vorlage durch einen Abtaststrahl in einem Projektions-Kopiergerät
DE2008194C3 (de)	1974-01-24	Elektrophotographisches Kopiergerät
DE2556281B2 (de)	1979-03-08	Signiereinrichtung für Filmtaschen
DE69310879T2 (de)	1997-11-06	Übertragungsvorrichtung
DE3109747A1 (de)	1981-12-24	Verfahren zur reinigung der bildabtastflaeche bei einem elektrosatischen kopiergeraet
DE3420328A1 (de)	1984-12-06	Automatisches zweiseiten-photokopiergeraet
DE3047706A1 (de)	1982-07-22	Elektrofotografisches kopiergeraet
CH623939A5 (es)	1981-06-30
EP0235771B1 (de)	1990-07-25	Vorrichtung zum Aufladen, Belichten und Entwickeln von lichtempfindlichem Aufzeichnungsmaterial
DE3306633C2 (de)	1986-06-26	Repro-Kamera mit Schlitzbelichtung
DE2819819C3 (de)	1981-07-09	Elektrophotographischer Mehrfach-Blattkopierer
DE3004291C2 (de)	1984-11-08	Kopiergerät
DE3839301C2 (de)	1994-04-14	Kopiergerät zur Reproduktion eines Bildes einer Vorlage
DE2124647A1 (de)	1971-12-02	Vorrichtung zur Einstellung eines For dermechanismus
DE3935530A1 (de)	1990-05-03	Geraet mit einer einrichtung zum zufuehren von papier aus einer papierspeichereinrichtung
DE3616931C2 (es)	1987-11-19
DE2462216B2 (de)	1976-11-25	Geraet zur elektrofotografischen herstellung von druckformen
EP0177856A2 (de)	1986-04-16	Fotografisches Kopiergerät
DE1597083C3 (de)	1979-04-12	Belichtungsvorrichtung
DE2847837A1 (de)	1979-05-10	Papierzufuehrvorrichtung
DE2906042C2 (de)	1982-05-27	Reproduktionskamera mit mehreren Magazinen
DE2412360B2 (de)	1976-11-18	Elektrofotografisches projektions- kopier-geraet

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