DE151971C - - Google Patents

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Publication number
DE151971C
DE151971C DENDAT151971D DE151971DA DE151971C DE 151971 C DE151971 C DE 151971C DE NDAT151971 D DENDAT151971 D DE NDAT151971D DE 151971D A DE151971D A DE 151971DA DE 151971 C DE151971 C DE 151971C
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DE
Germany
Prior art keywords
selenium
plate
exposure
silver
well
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.)
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Application number
DENDAT151971D
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German (de)
Publication of DE151971C publication Critical patent/DE151971C/de
Active legal-status Critical Current

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G17/00Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process
    • G03G17/02Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process with electrolytic development

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printing Plates And Materials Therefor (AREA)

Claims (1)

KAISERLICHESIMPERIAL PATENTAMT.PATENT OFFICE. Während bei den bekannten photographischen Aufnahmeverfahren auf Metallplatten, welche mit Selen überzogen sind, die chemische Wirkung des Lichts auf die lichtempfindliche Masse benutzt wird (E d e r 's Jahrbuch der Photogr. 1898, S. 374/375), beruht das im folgenden beschriebene Prinzip der Selenphotographie, ähnlich wie das von Piljtschikoff (Phot. Arch. 1896, S. 382; Ed er's Jahrbuch der Photogr. 1897, S. 366) angegebene Verfahren, auf der Erzeugung galvanoplastischer Bilder auf einer elektrisch leitenden Platte. Während aber Piljtschikoff eine reine Metallplatte benutzt, die so- wohl zur Stromleitung als auch als lichtempfindliches Material dienen soll, kommt bei dem nachfolgend beschriebenen Verfahren eine mit Selen überzogene Metallplatte zur Anwendung, die infolge der ungleich höherenWhile in the known photographic recording process on metal plates, which are coated with selenium, the chemical effect of light on the photosensitive Mass is used (E d e r's Jahrbuch der Photogr. 1898, p. 374/375) is based the principle of selenium photography described below, similar to that of Piljtschikoff (Phot. Arch. 1896, p. 382; Ed er's Jahrbuch der Photogr. 1897, p. 366) specified method, on the creation of electroformed images on an electrically conductive plate. But while Piljtschikoff uses a pure metal plate, which is supposed to serve as a power line as well as a light-sensitive material the process described below using a selenium-coated metal plate, the result of the incomparably higher Lichtempfindlichkeit des Überzuges bedeutend geeigneter ist. Entwirft man nämlich mit Hilfe eines Objektivs auf einer mit einer dünnen Selenschicht bedeckten Metallplatte, deren von Selen freie Stellen mit einem isolierenden Lacküberzug versehen sind (Ränder, Rückseite der Platte) und die sich an Stelle der Kassette eines photographischen Apparates in einem gegen Tageslicht abgeschlossenen parallelepipedischen Glastroge als Kathode eines elektrolytischen Bades befindet, ein Bild, so werden die einzelnen Teile der Selenplatte dem entworfenen Bilde entsprechend für einen elektrischen Strom verschieden stark leitend. Benutzt man z. B. als Elektrolyten eine der bekannten (galvanoplastischen) Versilberungslösungen (z. B. Kaliumsilbercyanid), während als Anode eine reine Silberplatte dient, so scheidet sich auf der dunklen Selenplatte bei verhältnismäßig schwachem Stromdurchgang, der Belichtung entsprechend, metallisches weißes Silber ab und man erhält ein Positiv, 'das alle Feinheiten des Bildes wiedergibt.The photosensitivity of the coating is significantly more suitable. You are involved in designing With the help of a lens on a metal plate covered with a thin layer of selenium, the selenium-free areas of which are provided with an insulating varnish coating (edges, Back of the plate) and which is in place of the cassette of a photographic Apparatus in a parallelepiped glass trough closed against daylight as Cathode of an electrolytic bath is located, a picture, so are the individual parts of the Selenium plate different for an electric current according to the designed image highly conductive. If you use z. B. as an electrolyte one of the well-known (galvanoplastic) Silver plating solutions (e.g. potassium silver cyanide), while a pure silver plate serves as the anode, so separates the dark selenium plate with relatively weak current passage, the exposure accordingly, metallic white silver and you get a positive, 'that all the subtleties of the image. Nachdem das Bild im Bade völlig entwickelt ist, wird es herausgenommen und gut getrocknet. Einer Fixierung bedarf es nicht. Um das Verfahren zu vereinfachen, kann man auch die Aufnahme auf eine trockene Selenplatte oben beschriebener Art machen und die Platte dann sofort nach der Exposition in der Dunkelkammer in einem besonderen elektrolytischen Bade entwickeln, da der Lichteindruck infolge der bekannten Trägheit des Selens einige Zeit nachwirkt.After the picture is fully developed in the bath, it is taken out and good dried. A fixation is not required. To simplify the process, one can also make the recording on a dry selenium plate of the type described above and the plate is then placed in a special immediately after exposure in the darkroom electrolytic bath because the light impression due to the well-known inertia of the Selenium has an effect for some time. 5555 Pate ν T-A NSPRU CH :Godfather ν T-A NSPRU CH: Verfahren zur Herstellung von photographischen Bildern durch Belichtung von elektrisch leitenden, mit Selen überzogenen Platten, dadurch gekennzeichnet, daß die Platten bei oder nach der Belichtung als Kathoden in einem elektrolytischen Bade angeordnet werden.Process for the production of photographic images by exposure of electrically conductive plates coated with selenium, characterized in that the Plates during or after exposure as cathodes in an electrolytic bath to be ordered.
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011963A (en) * 1957-09-25 1961-12-05 Minnesota Mining & Mfg Electrolytic electrocopying apparatus
US3072541A (en) * 1958-10-17 1963-01-08 Minnesota Mining & Mfg Developer
US3076752A (en) * 1958-10-17 1963-02-05 Minnesota Mining & Mfg Developer
US3085051A (en) * 1959-10-23 1963-04-09 Minnesota Mining & Mfg Novel developer and process for the use thereof in electrolytic image reproduction
US3096260A (en) * 1959-06-02 1963-07-02 Eastman Kodak Co Two-step electrophotography
US3149059A (en) * 1960-04-06 1964-09-15 Minnesota Mining & Mfg Reproduction process
US3165456A (en) * 1960-11-21 1965-01-12 Minnesota Mining & Mfg Developer
US3232852A (en) * 1960-10-25 1966-02-01 Eastman Kodak Co Dry photoconductographic process
US3252874A (en) * 1959-10-23 1966-05-24 Minnesota Mining & Mfg Photosensitive sheets, the preparation and use thereof
US3265595A (en) * 1960-10-25 1966-08-09 Eastman Kodak Co Visually controlled photoconductographic process
US3418217A (en) * 1959-07-23 1968-12-24 Minnesota Mining & Mfg Electrolytic image formation

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011963A (en) * 1957-09-25 1961-12-05 Minnesota Mining & Mfg Electrolytic electrocopying apparatus
US3072541A (en) * 1958-10-17 1963-01-08 Minnesota Mining & Mfg Developer
US3076752A (en) * 1958-10-17 1963-02-05 Minnesota Mining & Mfg Developer
US3096260A (en) * 1959-06-02 1963-07-02 Eastman Kodak Co Two-step electrophotography
US3418217A (en) * 1959-07-23 1968-12-24 Minnesota Mining & Mfg Electrolytic image formation
US3085051A (en) * 1959-10-23 1963-04-09 Minnesota Mining & Mfg Novel developer and process for the use thereof in electrolytic image reproduction
US3252874A (en) * 1959-10-23 1966-05-24 Minnesota Mining & Mfg Photosensitive sheets, the preparation and use thereof
US3149059A (en) * 1960-04-06 1964-09-15 Minnesota Mining & Mfg Reproduction process
US3232852A (en) * 1960-10-25 1966-02-01 Eastman Kodak Co Dry photoconductographic process
US3265595A (en) * 1960-10-25 1966-08-09 Eastman Kodak Co Visually controlled photoconductographic process
US3165456A (en) * 1960-11-21 1965-01-12 Minnesota Mining & Mfg Developer

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