DE1293589B - Method and apparatus for forming charge images on electrophotographic material - Google Patents
Method and apparatus for forming charge images on electrophotographic materialInfo
- Publication number
- DE1293589B DE1293589B DEG36204A DEG0036204A DE1293589B DE 1293589 B DE1293589 B DE 1293589B DE G36204 A DEG36204 A DE G36204A DE G0036204 A DEG0036204 A DE G0036204A DE 1293589 B DE1293589 B DE 1293589B
- Authority
- DE
- Germany
- Prior art keywords
- layer
- photoconductive layer
- exposure
- charge
- recording material
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0622—Heterocyclic compounds
- G03G5/0624—Heterocyclic compounds containing one hetero ring
- G03G5/0627—Heterocyclic compounds containing one hetero ring being five-membered
- G03G5/0633—Heterocyclic compounds containing one hetero ring being five-membered containing three hetero atoms
-
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0601—Acyclic or carbocyclic compounds
- G03G5/0605—Carbocyclic compounds
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0601—Acyclic or carbocyclic compounds
- G03G5/0609—Acyclic or carbocyclic compounds containing oxygen
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0664—Dyes
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0664—Dyes
- G03G5/0666—Dyes containing a methine or polymethine group
- G03G5/0668—Dyes containing a methine or polymethine group containing only one methine or polymethine group
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/08—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being inorganic
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/10—Bases for charge-receiving or other layers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/14—Inert intermediate or cover layers for charge-receiving layers
- G03G5/142—Inert intermediate layers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Photoreceptors In Electrophotography (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Her- Reproduktionsvorgang vorhanden sind, zu neutralistellen von Ladungsbildern, bei dem ein elektro- sieren und das vorangegangene Ladungsbild vollphotographisches Aufzeichnungsmaterial aus einer ständig zu löschen. Zu diesem Zweck wird die photoleitfähigen Schicht und gegebenenfalls einem elektrophotographische Platte vor der Vorbelichtung transparenten Schichtträger total vorbelichtet, auf- 5 im Vergleich zu der noch vorhandenen Ladung entgeladen und dann bildmäßig belichtet wird. gegengesetzt aufgeladen.The invention relates to a method for the reproduction process present to neutralize of charge images, in which one electrifies and the preceding charge image is fully photographic Record material from a constantly delete. For this purpose, the photoconductive layer and optionally an electrophotographic plate is applied before the pre-exposure transparent substrate totally pre-exposed, charged 5 compared to the charge still present and then imagewise exposed. opposite charged.
Die Erfindung betrillt ferner eine Vorrichtung zur Es ist ferner bekannt, die Vorbelichtung einerThe invention also provides a device for it is also known, the pre-exposure of a
Durchführung eines solchen Verfahrens, die eine photoleitfähigen Schicht dazu zu verwenden, die Totalbelichtungsstation hat, die bezogen auf die Vor- Oberfläche dieser Schicht auf das elektrische Potenschubrichtung des elektrophotographischen Auf- io tial der elektrisch leitenden Schichtträger zu bringen Zeichnungsmaterials vor der Aufladestation ange- und zwischen dieser Oberfläche und einer in ordnet ist. geringem Abstand gegenüberliegenden isolierendenCarrying out such a method that a photoconductive layer to use the Total exposure station has, based on the front surface of this layer on the electric power push direction of the electrophotographic image to bring the electrically conductive support Drawing material in front of the charging station and between this surface and an in is arranged. small distance opposite insulating
Es ist bekannt, für diese Verfahren grundsätzlich Schicht einen Entladungsvorgang hervorzurufen, ein elektrophotographisches Aufzeichnungsmaterial durch den die isolierende Schicht aufgeladen wird, mit einem isolierenden oder elektrisch leitenden 15 Dadurch ist es möglich, nach der bildmäßigen Be-Schichtträger zu verwenden. In der Regel wird eine lichtung das in der photoleitfähigen Schicht ent-Aluminiumfolie gewählt, die beim Aufladen und standene Ladungsbild auf die isolierende Schicht zu nachfolgenden bildmäßigen Belichten der photoleit- übertragen.It is known to cause a discharge process in principle for this process, an electrophotographic recording material through which the insulating layer is charged, with an insulating or electrically conductive 15 This makes it possible, according to the imagewise Be-layer support to use. As a rule, a lightening of the aluminum foil in the photoconductive layer is used chosen, the charge image that was applied to the insulating layer during charging and subsequent imagewise exposure of the photoconductive transferred.
fähigen Schicht geerdet ist. Es wurde nämlich festge- Aufgabe der Erfindung ist, ein Verfahren zumcapable layer is grounded. Indeed, the object of the invention was to provide a method for
stellt, daß die Verwendung eines leitenden geerdeten 20 Herstellen von Ladungsbildern anzugeben, bei dem Schichtträgers den Vorteil mit sich bringt, daß die auf die Verwendung von leitenden Schichtträgern auf die Oberfläche der photoleitfähigen Schicht auf- oder elektrisch leitenden Schichten in hierfür vergebrachten Ladungen sich dann dicht und gleich- wendeten elektrophotographischen Aufzeichnungsmäßig verteilen und auf dieser Oberfläche fest materialien verzichtet werden kann, ohne daß die haften, bis diese Ladungen bei der bildmäßigen Be- 25 Bildschärfe der Ladungsbilder im Vergleich zu der lichtung der belichteten Bildteile zum Schichtträger Bildschärfe der Ladungsbilder, die unter Ver-Hn abfließen. Außerdem ist bekannt, daß die Ver- Wendung einer Aluminiumfolie erhalten wurden, Wendung eines elektrisch leitenden Schichtträgers schlechter ist. eine maximale Bildschärfe gewährleistet. Ferner soll eine Vorrichtung zur Durchführungrepresents that the use of a conductive grounded 20 to indicate the creation of charge images in which The support has the advantage that the use of conductive supports on the surface of the photoconductive layer or electrically conductive layers applied for this purpose Charges then densely and evenly turned electrophotographic record-wise distribute and solid materials on this surface can be dispensed with without the adhere until these charges in the pictorial sharpness of the charge images in comparison to the exposure of the exposed parts of the image to the support image sharpness of the charge images, which under Ver-Hn flow away. It is also known that the use of aluminum foil has been obtained Turning an electrically conductive substrate is worse. ensures maximum image sharpness. Furthermore, a device for implementation
Nachteilig daran ist, daß die Auswahl geeigneter 30 der die genannte Aufgabe lösenden Verfahrens-Materialien für den Schichtträger große Schwierig- schritte angegeben werden.The disadvantage of this is that the selection of suitable process materials which solve the stated problem great difficult steps are given for the substrate.
keiten bereitet. Versuche, Papier unter Verwendung Der Gegenstand der Erfindung geht von einemprepares. Attempts to Use Paper The subject invention proceeds from one
verschiedener Anfeuchtungs- und antistatischer Verfahren zum Herstellen von Ladungsbildern, bei Mittel ausreichend leitfähig zu machen, versagen, . dem ein elektrophotographisches Aufzeichnungswenn die Luftfeuchtigkeit unter 15% relativer 35 material aus einer photoleitfähigen Schicht und Feuchtigkeit liegt, einem Prozentsatz, bei dem häufig gegebenenfalls einem transparenten Schichtträger auf diesem Arbeitsgebiet gearbeitet werden muß. Es total vorbelichtet, aufgeladen und dann bildmäßig wurde bereits versucht, diesen Nachteil dadurch zu belichtet wird, aus und ist dadurch gekennzeichnet, beseitigen, daß auf einen isolierenden Schichtträger daß die photoleitfähige Schicht von der dem späteren Ladungen mit einer Polarität aufgesprüht werden, 40 Ladungs- und Tonerbild entgegengesetzten Seite her die entgegengesetzt der auf der freien Oberfläche der vorbelichtet wird.various moistening and antistatic processes for creating charge images Making means sufficiently conductive fails,. an electrophotographic recording when the humidity is below 15% relative 35 material of a photoconductive layer and Moisture is, a percentage, at which often optionally a transparent support must be worked in this field. It is totally pre-exposed, charged and then pictorially attempts have already been made to expose this disadvantage by exposing it and is characterized by eliminate that on an insulating support that the photoconductive layer from that of the later Charges with one polarity are sprayed on, 40 charge and toner image opposite side the opposite of that on the free surface that is pre-exposed.
photoleitfähigen Schicht aufgebrachten Ladung ist. Durch die Erfindung wird erreicht, daß trotz derphotoconductive layer is applied charge. The invention achieves that despite the
Dieses Verfahren ist unzulänglich, da in den be- Verwendung eines nur wenig leitenden Schichtträgers lichteten Bildteilen innerhalb der photoleitfähigen scharfe und kontrastreiche Ladungs- bzw. Toner-Schicht keine Ladungsverschiebung ermöglicht wird, 45 bilder erhalten werden. Auch wird mit den erfinwie sie für eine hohe Bildschärfe notwendig ist. Alu- dungsgemäßen Verfahrensschritten der bei photominiumfolie, mehrschichtiges Papier oder kohle- leitfähigen Schichten auf nur wenig leitenden haltiges Papier sind zwar geeignete Schichtträger, je- Schichtträger oft beobachtete Effekt vermieden, daß doch sind sie schwierig zu handhaben und kost- nach der Entwicklung auf dem Schichtträger ein umspielig. 50 gekehrtes Tonerbild gebildet wird.This method is inadequate because it uses only a slightly conductive layer carrier exposed parts of the image within the photoconductive, sharp and high-contrast charge or toner layer no charge shift is allowed, 45 images are obtained. Also with the inventions it is necessary for high image sharpness. Process steps in accordance with Alum in the case of photominium film, multilayer paper or carbon-conductive layers on only slightly conductive ones containing paper are suitable substrates, each substrate often avoids that observed effect however, they are difficult to handle and cost a lot after developing on the substrate. 50 inverted toner image is formed.
Es ist ferner bekannt, eine elektrisch leitende Vorzugsweise erfolgt die Vorbelichtung mit einerIt is also known that the pre-exposure preferably takes place with an electrically conductive
Schicht auf den Schichtträger aufzubringen. solchen Lichtwellenlänge, daß nur eine dünneApply layer to the substrate. such wavelength of light that only a thin one
Nachteilig daran ist, daß derartige Schichten leitende Schicht an der Rückseite der photoleitschwer aufzutragen sind und, da sie lichtundurch- fähigen Schicht entsteht. Würde nämlich Vorlässig sind, können die damit erhaltenen Tonerbilder 55 belichtungsstrahlung tiefer in die photoleitfähige nicht als transparente Kopiervorlagen verwendet Schicht eindringen, würde ein wesentlicher Teil werden. dieser photoleitfähigen Schicht leitend werden, wo-The disadvantage of this is that such layers have a conductive layer on the back of the photoconductive layer are to be applied and, since it creates an opaque layer. That would be cautious are, the thus obtained toner images 55 exposure radiation can penetrate deeper into the photoconductive not used as a transparent master copy layer would penetrate an essential part will. this photoconductive layer become conductive, where-
Es ist ferner bekannt (deutsche Auslegeschrift durch ihre Fähigkeit, die zur Bilderzeugung erforder-1093 385), bei Verfahren zum Herstellen von liehe Ladung aufzunehmen und zu speichern, ver-Ladungsbildern eine Vorbelichtung der photoleit- 60 mindert werden würde.It is also known (German interpretation due to its ability to generate images) 385), to record and store charge images in processes for the production of borrowed charge a pre-exposure of the photoconductive 60 would be reduced.
fähigen Schicht vor der bildmäßigen Belichtung Gemäß einer Ausgestaltung der Erfindung wirdcapable layer prior to imagewise exposure. According to one embodiment of the invention
durchzuführen. Mit dieser Vorbelichtung soll aber die Wellenlänge, Einwirkungszeit und Intensität der nicht die Einsparung der elektrisch leitenden Schicht- Vorbelichtungsstrahlung so gewählt, daß nur 10 % träger erreicht werden, vielmehr wird die Vor- der Strahlung tiefer als 10% in die photoleitfähige belichtung dazu benutzt, die Ladungen, die vor jeder 65 Schicht eindringen.perform. With this pre-exposure, however, the wavelength, exposure time and intensity of the not the saving of the electrically conductive layer pre-exposure radiation chosen so that only 10% can be achieved more slowly, rather the front of the radiation is deeper than 10% into the photoconductive exposure is used to remove the charges that penetrate before every 65 layer.
erneuten bildmäßigen Belichtung der immer wieder Besonders gute Ergebnisse werden dann erzielt,repeated image-wise exposure of the repeatedly Particularly good results are achieved
zu verwendenden elektrophotographischen Platte wenn die Aufladung der photoleitfähigen Schicht noch in derselben durch den vorangegangenen noch in der Zeitspanne erfolgt, innerhalb der dieElectrophotographic plate to be used when charging the photoconductive layer takes place in the same through the previous one in the period of time within which the
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US147538A US3285740A (en) | 1961-10-25 | 1961-10-25 | Electrophotographic process |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1293589B true DE1293589B (en) | 1969-04-24 |
Family
ID=22521973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEG36204A Pending DE1293589B (en) | 1961-10-25 | 1962-10-23 | Method and apparatus for forming charge images on electrophotographic material |
Country Status (3)
Country | Link |
---|---|
US (1) | US3285740A (en) |
DE (1) | DE1293589B (en) |
GB (1) | GB971281A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3629000A (en) * | 1965-02-12 | 1971-12-21 | Crown Zellerbach Corp | Electrographic printing element |
AU412898B2 (en) * | 1967-01-06 | 1971-05-03 | Research Laboratories Of Australia Pty. Limited | Improved photogconductive member for electrophotography |
US3477846A (en) * | 1967-05-01 | 1969-11-11 | Gaf Corp | Xerographic charge transfer process |
US3697172A (en) * | 1968-09-09 | 1972-10-10 | Ricoh Kk | Electrostatic photography |
US3749927A (en) * | 1970-07-03 | 1973-07-31 | Fuji Photo Film Co Ltd | Electrostatic charging process for electrophotographic photosensitive material |
JPS4923903B1 (en) * | 1970-09-18 | 1974-06-19 | ||
JPS55127561A (en) * | 1979-03-26 | 1980-10-02 | Canon Inc | Image forming member for electrophotography |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2937943A (en) * | 1957-01-09 | 1960-05-24 | Haloid Xerox Inc | Transfer of electrostatic charge pattern |
DE1093385B (en) * | 1958-01-24 | 1960-11-24 | Rank Xerox Ltd | Xerographic duplication process |
GB867668A (en) * | 1957-11-21 | 1961-05-10 | Otto Kurt Kolb | Improvements in or relating to xerographic printing |
BE606987A (en) * | 1960-08-08 | 1961-12-01 | Commw Of Australia | Improved process for producing images in electrophotography and electroradiography |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2955938A (en) * | 1955-08-01 | 1960-10-11 | Haloid Xerox Inc | Xerography |
US2963365A (en) * | 1956-02-16 | 1960-12-06 | Rca Corp | Electrostatic printing |
NL112672C (en) * | 1956-07-31 | |||
NO95057A (en) * | 1957-09-07 | |||
US3121007A (en) * | 1958-02-12 | 1964-02-11 | Xerox Corp | Photo-active member for xerography |
US3041167A (en) * | 1959-08-19 | 1962-06-26 | Xerox Corp | Xerographic process |
-
1961
- 1961-10-25 US US147538A patent/US3285740A/en not_active Expired - Lifetime
-
1962
- 1962-10-16 GB GB39118/62A patent/GB971281A/en not_active Expired
- 1962-10-23 DE DEG36204A patent/DE1293589B/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2937943A (en) * | 1957-01-09 | 1960-05-24 | Haloid Xerox Inc | Transfer of electrostatic charge pattern |
GB867668A (en) * | 1957-11-21 | 1961-05-10 | Otto Kurt Kolb | Improvements in or relating to xerographic printing |
DE1093385B (en) * | 1958-01-24 | 1960-11-24 | Rank Xerox Ltd | Xerographic duplication process |
BE606987A (en) * | 1960-08-08 | 1961-12-01 | Commw Of Australia | Improved process for producing images in electrophotography and electroradiography |
Also Published As
Publication number | Publication date |
---|---|
GB971281A (en) | 1964-09-30 |
US3285740A (en) | 1966-11-15 |
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