DE927666C - Process for the electromechanical production of printing forms with a selectable reproduction scale - Google Patents

Process for the electromechanical production of printing forms with a selectable reproduction scale

Info

Publication number
DE927666C
DE927666C DEH15920A DEH0015920A DE927666C DE 927666 C DE927666 C DE 927666C DE H15920 A DEH15920 A DE H15920A DE H0015920 A DEH0015920 A DE H0015920A DE 927666 C DE927666 C DE 927666C
Authority
DE
Germany
Prior art keywords
image
engraving
scanning
printing forms
reproduction scale
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.)
Expired
Application number
DEH15920A
Other languages
German (de)
Inventor
Rudolf Dr-Ing Hell
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.)
Dr-Ing Rudolf Hell Kiel-Dietrichsdorf
Original Assignee
Dr-Ing Rudolf Hell Kiel-Dietrichsdorf
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
Priority to DEH11888A priority Critical patent/DE946329C/en
Priority to DEH12481A priority patent/DE940624C/en
Priority to DEH12496A priority patent/DE924306C/en
Priority to DEH12721A priority patent/DE938351C/en
Priority to DEH14667A priority patent/DE927813C/en
Priority to DEH14878A priority patent/DE941833C/en
Priority to FR1076207D priority patent/FR1076207A/en
Priority to US341641A priority patent/US2925463A/en
Priority to GB7609/53A priority patent/GB726846A/en
Application filed by Dr-Ing Rudolf Hell Kiel-Dietrichsdorf filed Critical Dr-Ing Rudolf Hell Kiel-Dietrichsdorf
Priority to DEH15920A priority patent/DE927666C/en
Priority to CH322661D priority patent/CH322661A/en
Priority to US353212A priority patent/US2863000A/en
Priority to FR1090404D priority patent/FR1090404A/en
Priority to GB12888/53A priority patent/GB733037A/en
Application granted granted Critical
Publication of DE927666C publication Critical patent/DE927666C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/02—Engraving; Heads therefor
    • B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M9/00—Processes wherein make-ready devices are used
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
    • H04N1/393—Enlarging or reducing

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Projection-Type Copiers In General (AREA)

Description

Im Patent 924 306 ist ein Verfahren zur elektromechanischen Herstellung von Klischees mit wählbarem Reproduktionsmaß stab beschrieben, bei dem eine Bildvorlage mittels eines Objektivs in an sich bekannter Weise in eine Bildebene abgebildet wird. In der Bildebene befindet sich bei einer der vor- - geschlagenen Ausführungsformen ein diffus reflektierender Schirm, auf dem das vergrößert oder verkleinert projizierte Bild lichtelektrisch abgetastetIn patent 924 306 is a method for electromechanical Production of clichés with a selectable reproduction standard described in which an original image is imaged in an image plane in a manner known per se by means of an objective. In one of the proposed embodiments, there is a diffusely reflective one in the image plane Screen on which the enlarged or reduced projected image is photoelectrically scanned

wird. Die dabei entstehenden fotoelektrischen Ströme steuern ein Gravier werkzeug, das mit der Abtastvorrichtung starr verbunden ist und das die Druckform in der Größe des projezierten Bildes erzeugt.will. The resulting photoelectric currents control an engraving tool that works with the Scanning device is rigidly connected and that the printing form in the size of the projected image generated.

Die Erfindung betrifft eine weitere Verbesserung des Verfahrens nach dem Hauptpatent. Solange nämlich der Graviertisch, auf dem sich die Druckplatte befindet, ruhend angeordnet ist, muß letztere ebenso wie das projizierte Bild von dem Abtast- und Gravierarm in zwei zueinander senkrechten Richtungen, der Abtastrichtung und der Vorschubrichtung, abgetastet werden. Werden diese beiden Abtastbewegungen jedoch von dem Graviertisch ausgeführt oder auf die Bewegung des Gravier-The invention relates to a further improvement of the method according to the main patent. So long namely the engraving table on which the printing plate is located, is arranged resting, must be the latter as well as the projected image from the scanning and engraving arm in two mutually perpendicular Directions, the scanning direction and the feed direction are scanned. Will these two However, scanning movements carried out by the engraving table or on the movement of the engraving

tisches und des Abtast- und Gravierarmes verteilt, so wird nach dem Erfindungsgedanken die Projektionseinrichtung gemeinsam mit dem Graviertisch bewegt. Das projizierte Bild wird dadurch mit dem Graviertisch mitbewegt und kann auf diesem erzeugt werden. Beispielsweise läßt sich das Bild auf der Unterseite des Gravier tisches abbilden und die Druckform auf der Oberseite des Graviertisches gravieren. Es ist gleichgültig, ob es sich dabei um die Gravur von Raster- oder Strichklischees handelt. Das Verfahren hat den Vorteil, daß die Änderung des Reproduktionsmaßstabes in den optischen Teil der Anordnung verlegt wird und die Übertragung des projizieren Bildes auf die Druckplatte ohne Zwischenschaltung mechani-table and the scanning and engraving arm distributed, so according to the inventive concept, the projection device moved together with the engraving table. This will make the projected image moved with the engraving table and can be generated on this. For example, can the image on the underside of the engraving table and the printing form on the top of the Engrave engraving table. It does not matter whether it is the engraving of raster or line clichés acts. The method has the advantage that changing the reproduction scale in the optical part of the arrangement is relocated and the transmission of the projected image the pressure plate without the interposition of mechanical

scher Getriebe, also ohne Bildfehler, erfolgt. Nach der Erfindung wird die Projektionseinrichtung zu diesem Zweck fest am Graviertisch angeordnet. Um ein seitenrichtiges projiziertes Bild zu erhalten, wird in den Strahlengang der Projektionseinrichtung eine optische Bildumkehrvorrichtung eingeschaltet, die beispielsweise aus zwei gekreuzten totalreflektierenden Prismen oder aus zwei Objektiven besteht, zwischen denen sich ein reelles Zwischenbild von der Bildvorlage befindet. Dadurch entsteht die Druckform auf der Oberseite des Graviertisches spiegelbildlich zur Bildvorlage.shear transmission, i.e. without image errors. According to the invention, the projection device is too for this purpose firmly arranged on the engraving table. To get a correct projected image, an optical image reversing device is switched on in the beam path of the projection device, for example, from two crossed totally reflective prisms or from two lenses exists, between which there is a real intermediate image from the original image. Through this the printing form is created on the top of the engraving table as a mirror image of the original image.

In der Figur ist eine Ausführungsform der Erfindung dargestellt. Für die Teile, die denen der Figur des Hauptpatents entsprechen, sind die gleichen Bezugszeichen gewählt.In the figure, an embodiment of the invention is shown. For the parts that match those of the Figure of the main patent correspond, the same reference numerals are chosen.

Die beiden Lichtquellen 1 beleuchten eine Bildvorlage 2, die auf einem Tischchen 20 angeordnet ist. Durch das Objektiv 21 wird der Strahlengang parallel gemacht und durch das Objektiv 22 auf einem Schirm 4 wieder gesammelt. Dadurch entsteht auf dem Schirm 4 ein vergrößertes oder verkleinertes Bild der Bildvorlage 2. Der Reproduktionsmaßstab wird dadurch eingestellt, daß die Abstände der Bildvorlage 2 und der Objektive ■ 21/22 vom Bildschirm mittels der Reiter 23/24 verändert werden, die auf einer Stange 25 verschiebbar sind. In den Strahlengang sind zwei gekreuzte, totalreflektierende Prismen geschaltet, so daß das projizierte Bild auf dem Schirm 4 seitenrichtig im Verhältnis zur Bildvorlage 2 entsteht. Der Schirm 4 ist auf der Unterseite eines Graviertisches 27 angeordnet, der auf Rollen 28 gelagert ist. Der Graviertisch 27 trägt gleichzeitig die Stange 25 mit der Projektionseinrichtung. Durch den Motor 29 und die Gewindespindel 30 erfährt der Graviertisch 27 eine in der Zeichenebene hin und her gehende Bewegung, die sogenannte Abtastbewegung. Auf der Oberseite des Graviertisches 27 ist die Druckplatte 11 mittels zweier Halteschrauben 31 befestigt.The two light sources 1 illuminate an original image 2, which is arranged on a table 20. The beam path becomes through the lens 21 made parallel and collected again by the objective 22 on a screen 4. This creates on the screen 4 an enlarged or reduced image of the original image 2. The reproduction scale is set in that the distances between the original image 2 and the lenses ■ 21/22 can be changed from the screen by means of tabs 23/24, which can be moved on a rod 25 are. Two crossed, totally reflective prisms are connected in the beam path so that the projected image on the screen 4 is created in the correct direction in relation to the original image 2. The screen 4 is arranged on the underside of an engraving table 27 which is mounted on rollers 28. Of the Engraving table 27 simultaneously carries the rod 25 with the projection device. By the engine 29 and the threaded spindle 30, the engraving table 27 moves back and forth in the plane of the drawing walking movement, the so-called scanning movement. On the top of the engraving table 27 is the Pressure plate 11 attached by means of two retaining screws 31.

Senkrecht zu dieser Abtastbewegung bewegt sich der Abtast- und Gravierarm 32 in der sogenannten Vorschubrichtung. Er wird durch die Stange 33 geführt und mittels des Motors 34 und der Gewindespindel 35 senkrecht zur Zeichenebene hin und her bewegt. Das auf den Schirm 4 projizierte Bild wird durch eine Abtastvorrichtung abgetastet, die aus einem Objektiv 5, einer Blende 6, einer Sammellinse 7, einer Fotozelle 8 und einer rotierenden Lochscheibe 36 besteht. Die Abtastvorrichtung blendet nur ein kleines Flächenelement des projizierten Bildes aus, nimmt dessen Helligkeit auf und setzt diese in einen fotoelektrischen Steuerstrom um. Dieser Steuerstrom betätigt über die mit 9 angedeutete Verbindungsleitung ein Gravierwerkzeug 10, das die Druckform 11 auf der Oberseite des Graviertisches 27 erzeugt. Durch die Bewegung des Graviertisches 27 wird das auf den Schirm 4 projizierte Bild an der Abtastvorrichtung zeilenweise vorbeigeführt.The scanning and engraving arm 32 moves perpendicular to this scanning movement in the so-called Feed direction. It is guided through the rod 33 and by means of the motor 34 and the threaded spindle 35 moved back and forth perpendicular to the plane of the drawing. The image projected on the screen 4 is scanned by a scanning device, which consists of an objective 5, a diaphragm 6, a Converging lens 7, a photocell 8 and a rotating perforated disk 36 consists. The scanning device only fades out a small area element of the projected image, absorbs its brightness and converts this into a photoelectric control current. This control current is actuated via the 9 indicated connecting line an engraving tool 10, which the printing form 11 on the top of the engraving table 27 generated. The movement of the engraving table 27 shows this on the screen 4 projected image past the scanning device line by line.

Claims (2)

Patentansprüche:Patent claims: 1. Verfahren zur Herstellung von Druckformen mit wählbarem Reproduktionsmaß stab, wobei das von einer Bildvorlage projizierte Bild oder ein Teil desselben zur Steuerung eines Gravierwerkzeuges lichtelektrisch abgetastet wird, nach Patent 924 306, dadurch gekennzeichnet; daß ein die Druckplatte tragender no Graviertisch mitsamt dem projizieren Bild und der Projektionseinrichtung in einer oder in beiden Abtastrichtungen relativ zum Abtast- und Gravierorgan bewegt wird.1. Process for the production of printing forms with a selectable reproduction scale, the image projected from an original image or a part thereof for control an engraving tool is scanned photoelectrically, according to patent 924 306, characterized in that; that an engraving table carrying the printing plate along with the projected image and the projection device in one or in both scanning directions relative to the scanning and engraving organ is moved. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß in den Strahlengang der Projektionseinrichtung eine optische Bildumkehrvorrichtung geschaltet wird. .2. The method according to claim 1, characterized in that that in the beam path of the projection device an optical image reversing device is switched. .
DEH15920A 1952-03-20 1953-03-30 Process for the electromechanical production of printing forms with a selectable reproduction scale Expired DE927666C (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
DEH11888A DE946329C (en) 1952-03-20 1952-03-20 Process for the production of screened clichés using the methods of image telegraphy
DEH12481A DE940624C (en) 1952-03-20 1952-05-09 Device for the production of screened printing forms by photoelectric transmission of images
DEH12496A DE924306C (en) 1952-03-20 1952-05-13 Process for the production of printing forms with a selectable reproduction scale by photoelectric transmission in original images
DEH12721A DE938351C (en) 1952-03-20 1952-05-30 Process for the production of screened printing forms by photoelectric transmission of original images
DEH14667A DE927813C (en) 1952-03-20 1952-12-05 Process for preparing screened clichés
DEH14878A DE941833C (en) 1952-03-20 1952-12-27 Device for the production of printing forms
FR1076207D FR1076207A (en) 1952-03-20 1953-02-18 Process for the establishment of engraved copies with the methods of telegraphic transmission of images
US341641A US2925463A (en) 1952-03-20 1953-03-11 Method of and apparatus for producing screened printing patterns
GB7609/53A GB726846A (en) 1952-03-20 1953-03-19 Improvements in or relating to the photo-mechanical production of half-tone printingplates
DEH15920A DE927666C (en) 1952-03-20 1953-03-30 Process for the electromechanical production of printing forms with a selectable reproduction scale
CH322661D CH322661A (en) 1952-03-20 1953-04-14 Method and device for the production and finishing of printing blocks
US353212A US2863000A (en) 1952-03-20 1953-05-05 Device for making printing blocks
FR1090404D FR1090404A (en) 1952-03-20 1953-05-07 Device for the production of printing plates
GB12888/53A GB733037A (en) 1952-03-20 1953-05-08 Apparatus for the production of printing plates

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DEH11888A DE946329C (en) 1952-03-20 1952-03-20 Process for the production of screened clichés using the methods of image telegraphy
DEH12481A DE940624C (en) 1952-03-20 1952-05-09 Device for the production of screened printing forms by photoelectric transmission of images
DEH12496A DE924306C (en) 1952-03-20 1952-05-13 Process for the production of printing forms with a selectable reproduction scale by photoelectric transmission in original images
DEH12721A DE938351C (en) 1952-03-20 1952-05-30 Process for the production of screened printing forms by photoelectric transmission of original images
DEH14667A DE927813C (en) 1952-03-20 1952-12-05 Process for preparing screened clichés
DEH14878A DE941833C (en) 1952-03-20 1952-12-27 Device for the production of printing forms
DEH15920A DE927666C (en) 1952-03-20 1953-03-30 Process for the electromechanical production of printing forms with a selectable reproduction scale

Publications (1)

Publication Number Publication Date
DE927666C true DE927666C (en) 1955-05-12

Family

ID=27561655

Family Applications (7)

Application Number Title Priority Date Filing Date
DEH11888A Expired DE946329C (en) 1952-03-20 1952-03-20 Process for the production of screened clichés using the methods of image telegraphy
DEH12481A Expired DE940624C (en) 1952-03-20 1952-05-09 Device for the production of screened printing forms by photoelectric transmission of images
DEH12496A Expired DE924306C (en) 1952-03-20 1952-05-13 Process for the production of printing forms with a selectable reproduction scale by photoelectric transmission in original images
DEH12721A Expired DE938351C (en) 1952-03-20 1952-05-30 Process for the production of screened printing forms by photoelectric transmission of original images
DEH14667A Expired DE927813C (en) 1952-03-20 1952-12-05 Process for preparing screened clichés
DEH14878A Expired DE941833C (en) 1952-03-20 1952-12-27 Device for the production of printing forms
DEH15920A Expired DE927666C (en) 1952-03-20 1953-03-30 Process for the electromechanical production of printing forms with a selectable reproduction scale

Family Applications Before (6)

Application Number Title Priority Date Filing Date
DEH11888A Expired DE946329C (en) 1952-03-20 1952-03-20 Process for the production of screened clichés using the methods of image telegraphy
DEH12481A Expired DE940624C (en) 1952-03-20 1952-05-09 Device for the production of screened printing forms by photoelectric transmission of images
DEH12496A Expired DE924306C (en) 1952-03-20 1952-05-13 Process for the production of printing forms with a selectable reproduction scale by photoelectric transmission in original images
DEH12721A Expired DE938351C (en) 1952-03-20 1952-05-30 Process for the production of screened printing forms by photoelectric transmission of original images
DEH14667A Expired DE927813C (en) 1952-03-20 1952-12-05 Process for preparing screened clichés
DEH14878A Expired DE941833C (en) 1952-03-20 1952-12-27 Device for the production of printing forms

Country Status (5)

Country Link
US (2) US2925463A (en)
CH (1) CH322661A (en)
DE (7) DE946329C (en)
FR (2) FR1076207A (en)
GB (2) GB726846A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE960608C (en) * 1955-04-15 1957-03-21 Hell Rudolf Dr Ing Fa Device for the electromechanical production of printing forms with variable reproduction scale
DE1053312B (en) * 1954-05-10 1959-03-19 Fairchild Camera Instr Co Engraving machine working with photoelectric transmission
DE1235142B (en) * 1962-12-28 1967-02-23 Henri Mizoule Method and device for the production of printing blocks, in particular for offset printing

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL109559C (en) * 1955-07-05
US3075042A (en) * 1959-12-23 1963-01-22 Fairchild Camera Instr Co Cold cutting technique for half-tone electronic engraving
US3075895A (en) * 1960-02-15 1963-01-29 Gen Dev Corp Method of preparing plates for electromechanical engraving
US3103168A (en) * 1962-03-19 1963-09-10 Braco Engraving Co Printing plates
US3404254A (en) * 1965-02-26 1968-10-01 Minnesota Mining & Mfg Method and apparatus for engraving a generally cross-sectionally circular shaped body by a corpuscular beam
DE1901101A1 (en) * 1969-01-10 1970-10-29 Hell Rudolf Dr Ing Fa Method for point-by-point and line-by-line rasterized recording of the image signals obtained by scanning halftone images with raster rotated against the recording direction
US4084183A (en) * 1970-03-18 1978-04-11 Dr. Ing. Rudolf Hell Gmbh. Method for the electro-optical reproduction of half-tone pictures
US3770888A (en) * 1971-10-04 1973-11-06 Werkspoor Amsterdam Nv Method and apparatus for controlling the engraving pattern of an electromagnetic gravure engraving
JPS51123511A (en) * 1975-04-22 1976-10-28 Oki Electric Ind Co Ltd Degree recording method
GB8808095D0 (en) * 1988-04-07 1988-05-11 Hillen S Improvements in/relating to method of & apparatus for producing an enlargement of visual representation
CN113028221B (en) * 2021-03-06 2022-06-24 哈尔滨工业大学 Intellectual property data batch acquisition equipment
CN113635192B (en) * 2021-08-17 2022-08-19 三明学院 Glass toughening treatment equipment and process

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1849544A (en) * 1930-01-31 1932-03-15 Howey Walter Process of and apparatus for producing printing plates
US1918124A (en) * 1930-08-25 1933-07-11 Communications Patents Inc Arc scanning facsimile system
US2005130A (en) * 1931-07-28 1935-06-18 Dalton John Willey Electrical circuit and apparatus
US2063614A (en) * 1931-12-14 1936-12-08 Mackinner Corp Method and apparatus for making printing plates
US2092765A (en) * 1932-12-19 1937-09-14 William A Hughes Electric machine
US2079970A (en) * 1933-01-16 1937-05-11 William C Speed Process and apparatus for photoelectric engraving
US2076220A (en) * 1934-02-03 1937-04-06 Joseph A Bennett Method of and means for producing printing plates
US2149487A (en) * 1934-05-15 1939-03-07 Myron C Zilberman Half-tone engraving and apparatus for and method of making the same
US2294644A (en) * 1940-07-05 1942-09-01 Interchem Corp Contrast images for making printing plates
US2312042A (en) * 1940-08-03 1943-02-23 George E Losier Electric circuit for photoelectric engraving machines
US2355047A (en) * 1942-02-24 1944-08-08 Lynch Corp Nonlinear modulating system
US2544225A (en) * 1946-04-13 1951-03-06 David H Hearle Pantograph engraving machine
US2638500A (en) * 1951-06-28 1953-05-12 Clare E Ernst Process and apparatus for photoelectric engraving

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1053312B (en) * 1954-05-10 1959-03-19 Fairchild Camera Instr Co Engraving machine working with photoelectric transmission
DE960608C (en) * 1955-04-15 1957-03-21 Hell Rudolf Dr Ing Fa Device for the electromechanical production of printing forms with variable reproduction scale
DE1235142B (en) * 1962-12-28 1967-02-23 Henri Mizoule Method and device for the production of printing blocks, in particular for offset printing

Also Published As

Publication number Publication date
DE927813C (en) 1955-05-16
DE924306C (en) 1955-03-07
FR1076207A (en) 1954-10-25
DE946329C (en) 1956-07-26
US2925463A (en) 1960-02-16
DE941833C (en) 1956-04-19
DE938351C (en) 1956-03-01
DE940624C (en) 1956-03-22
GB733037A (en) 1955-07-06
US2863000A (en) 1958-12-02
FR1090404A (en) 1955-03-30
CH322661A (en) 1957-06-30
GB726846A (en) 1955-03-23

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