• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This invention relates to an electrophotographic material and may be used in xerography. The purpose of the invention is to improve the quality of the material. An electrophotographic material with an additional layer of binder from an electrically insulating organic substance is an electrically conductive substrate coated with a sequentially generating layer of a photoconductor based on trigonal selenium treated with hydroxide, carbonate, acetate or selenite of a substance selected from the group comprising sodium, potassium, lithium, rubidium and cesium, with their content in the photoconductor layer equal to 0.01-12.0% of the weight of trigonal selenium and dispersed in organic resin, and a transport layer based on electrically insulating organic matter. 1 hp f-ly, 1 tab. O) coke O5 N0 S
    公开号:SU1356972A3
    申请号:SU782657653
    申请日:1978-09-05
    公开日:1987-11-30
    发明作者:М.Хорган Энтони；В.Радлер Ричард (Младший)
    申请人:Ксерокс Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to electro-photographic materials and can be used in xerography.
    The aim of the invention is to improve the quality of the material by reducing its dark recession before and after its cyclic use.
    An electrophotographic material with an additional layer of binder from an electrically insulating organic substance is an electrically conductive substrate with a sequentially generated layer of a photoconductor based on trigonal selenium treated with hydroxide, carbonate, acetate or selenite selected from the group consisting of sodium, potassium.
    Example 3. Obtaining treated trigonal selenium containing 0.01% Na by weight of selenium. R. The process is carried out as in Example 1, with the difference that 0.01 N solution of NaOH is used.
    Example 4. Preparation of treated trigonal selenium containing 10% lithium.
    The process is conducted as in example 1, with the difference that they use 4.8 N solution of lithium oxide hydrate. The total content of lithium selenite and carbonate lithium is 1.0 wt.%.
    Example 5, Obtaining treated trigonal selenium, contains -. eating 1.0% potassium.
    The process is conducted as in example 1,
    tritium, rubidium and cesium, while their content is 20 °, use 4.8 N hydrate solution
    oxides K.
    The total content of potassium selenite and carbonate carbonate is, 0 wt.%, With an equimolar ratio of 1. Preparation of a mass of trigonal selenium, tripartite trigonal selenium, co. Example 6, Preparation of treatment with 1.0% sodium by weight of selenium, melted trigonal selenium, containing trigonal selenium carefully passing through 1.0% rubidi.
    washed and then poured to volume. The process is carried out as in Example 1, 4 l of a 0.6 N solution of sodium hydroxide and a 4.8 N solution of hydrate is used (NaOH). You can also use rubidium oxide.
    0.01–12.0% of the weight of trigonal selenium in the photoconductor layer, and dispersed in the organic resin.
    Example
    0.6 N sodium carbonate solution (NajCO ,, NaHCO,), sodium acetate (CH ,, COONa) and sodium selenite (NajSeO
    This solution is stirred for 30 minutes, the solid particles are allowed to settle and leave them in contact with NaOH or KANSO3, CH, COONa for 18 hours. The liquid phase is decanted, the treated trigonal selenium is filtered through filter paper No. 2, and then dried at 60 ° C in a stream of air for 18 h.
    The average amount of Na is 0% of the total mass of trigonal selenium.
    Example 2: Preparation of about 50.t at ambient temperature. At a humidity of less than 20% and a temperature of 30 ° C, an adhesive layer is applied to it, for example, from a 0.5% polyvinyl butyral solution in ethyl alcohol, with a thickness of the raw layer of 0.00254 mm, followed by drying of this layer. Then a layer with a thickness of the raw layer of 0.0025 km, obtained from the solution as follows, is applied to it.
    worked trigonal selenium containing 12.0% Na by weight of Se.
    The process is carried out as in example 1, with the time of 1. That is used 4.8 N NaOH solution.
    The total content of sodium selenite and sodium carbonate is 12% by mass, at an equimolar ratio with respect to the weight of trigonal selenium.
    Example 3. Obtaining treated trigonal selenium containing 0.01% Na by weight of selenium. The process is carried out as in Example 1, with the difference that 0.01 N solution of NaOH is used.
    Example 4. Preparation of treated trigonal selenium containing 1.0% lithium.
    The process is conducted as in example 1, with the difference that they use 4.8 N solution of lithium oxide hydrate. The total content of lithium selenite and lithium carbonate is 1.0 wt.%.
    Example 5, Obtaining treated trigonal selenium, contains -. eating 1.0% potassium.
    The process is conducted as in example 1,
    I
    The total content of rubidium selenite and rubidium carbonate, 0 wt.% With an equimolar ratio relative to the weight of trigonal selenium.
    Example 7. Preparation of processed trigonal selenium containing 0.6 wt.% Cesium.
    The process is conducted as in example 1, but using a 4.8 N solution of cesium oxide hydrate.
    Example 8. Preparation of electrophotographic material containing 20 wt.% Photoconductor on. the basis of the treated trigonal selenium in an electrically active resin.
    An electrically conducting substrate, such as an aluminum foil 0.0254 mm thick, is washed with methylene chloride () and
    dy At a moisture content of less than 20% and a temperature of 30 ° C, an adhesive layer is applied, for example, from a 0.5% solution of polyvinyl butyral in ethyl alcohol with a thickness of the raw layer of 0.00254 mm, followed by drying this layer. Then a layer with a thickness of the raw layer of 0.0025 km, obtained from the solution as follows, is applied to it.
    3
    0.8 g of purified poly-M-vinylcarbazole (PVC), 14 ml of a mixture of tetrahydrofuran (THF) and toluene at a ratio of 1: 1, 100 g of stainless steel shot and 0.8 g of treated trigonal selenium are placed in a container. The mixture obtained at this time is treated in a ball mill for 12 hours.
    An electrophotographic material is obtained containing an electrically conductive substrate coated with a photoconductor layer, taken in an amount of 20% based on trigonal
    selenium treated with either hydroxide or carbonate, or acetate, or sodium selenite, taken in an amount of 1% by weight of trigonal selenium.
    Example 9. Get electro photographic material with the content of the photoconductor in the amount of 25 wt.%. The material is prepared as in example 7, with the difference that a layer of 1% is applied to the substrate, for example, polyether block copolymer in chloroform with a dry layer thickness of 0.0025 mm. This layer is then covered with a second layer of 1% PVC in benzene with a dry layer thickness of 0.0025 m. A layer is applied to it, prepared from a solution containing 0.328 g of PVC, 0.0109 g of THF, 14 ml of benzene, 100 g of stainless steel fractions and 0.44 g of treated trigonal selenium obtained in example 1.
    Example 10. Electrophotographic material with an additional layer of binder.
    In the electrophotographic material obtained in Example 7, a layer with 20% by weight of a photosemiconductor based on trigonal selenium, treated with either, or NaHCO, or CHjCOONa, or taken in an amount of 1% by weight of trigonal selenium, is generating carrier charge layer. A charge transfer layer prepared as follows is deposited on this generating layer.





    50% polycarbonate resin with mol. weighing 50,000-100,000 is shifted from 50%. G N -diphenyl-N, K -bis (Z-methylphenyl) - - (1,1 -bifensch1) -4,4-diamine, then mixed with 15% methylene chloride and the mixture is applied on top of a 25 micron thick moisture-generating layer
    0
    25
    0
    five
    P
    35
    0
    no more than 15%. Then, the resulting material is calcined at 70 ° C for 18 h in vacuum. Next, the element is charged to a maximum potential of 1260 V, the potential is initially measured 0.06 s after charging, and the element is charged to a potential of 1200 V through 0.22 s, which corresponds to a reconstructed dark decay of 60 V. After 0.66 the element is discharged to a potential of 1190 V, i.e. The dark recession is 70 V. The fatigue dark recession is characterized by the following values: the maximum initial potential, measured 0.06 s after charging, 1300 V, 0.22 s in the dark, is discharged to 1210 V, i.e. the dark decay is up to 90 V. Through 0.66 s, the cell is discharged to 1190 V, the dark decay is 110 V.
    Example 11. Preparation of a layer containing 30% of the treated trigonal selenium in Example 1 dispersed in a binder.
    The layer is prepared as follows.
    Stainless steel shot, 7.5 g of polyester, 11.5 g of treated selenium and 21 ml of chloroform are placed in clean glassware. By- . the trial is placed first in a vibrator for .1 h, and then the contents are placed in a vacuum desiccator to remove air bubbles. The resulting suspension is then deposited on an aluminum substrate.
    The electrical properties of the plate were checked by charging it with an electric field of 20 V / µm and discharging it under the action of light from A 5800 °
    840
    And with photon illumination / cm. Plate dosta5
    0
    g
    exactly discharges well and can be used to form a visible image. The element is charged with a positive crown. It has a low rate of dark recession compared to untreated trigonal selenium and has a more stable photomultiplier in comparison with it. Example 12. Preparation of electrophotographic material containing trigonal selenium treated with lithium selenite and carbonate of lithium carbonate dispersed in an electrically active resinous binder.
    The aluminum substrate with a thickness of 0.127 mm is washed with methylene chloride and in a box at 30 ° C and humidity
    A 20% adhesive layer is applied to it, for example, from a 0.5% aqueous solution of polyvinyl butyral in ethanol of a thickness of 0.0127 mm, followed by drying, first for 1 minute, and then for 10 minutes in an oven
    yo with.
    A generator layer containing 20 o6.% Treated trigonal selenium is prepared as follows.
    0.8 g of purified PVC and 14 ml of a mixture of THF and toluene (1: 1) are added to an amber glass container, 100 g of stainless steel fraction and 0.8 g of treated trigonal selenium are added. The resulting mixture is placed in a ball mill for 72 hours. Then the solution is applied to the previously obtained intermediate layer with a layer thickness in the wet state of 0.0127 mm and the resulting material is calcined in vacuum at 100 ° C for 17 hours. The coating thickness in the dry state 2 MKMo
    Example 13. Obtaining electrophotographic material with an additional layer of binder S performing the function of a transport layer, wherein the layer comprising the treated
    the potential drop is 140 V, since the surface potential decreases to 1000 V. After 0.66 s
     the surface potential is 880 V, which indicates that the dark fall is 260 V.
    Example 14. Preparation of an electrophotographic Mc1 material containing trigonal selenium treated with potassium selenite to potassium carbonate dispersed in an electrically active polymeric binder
    15
    20
    The material is prepared as in Example 11, with the difference that trigonal selenium is used, treated as in Example 4.
    Example 15. Production of electrophotographic material with an additional layer of binder.
    The material is ready tj as in example 12.
    The material is charged to a maximum of 2g of 1400 V potential. After 0.22 seconds, during which the material remains in the dark, its fatigue dark potential drop is 80 V, i.e. surface potential drops
    the potential is 1240 V, which corresponds to a dark fall of 160 V.
    trigonal selenium, performs the function QP- ° 320 V. After 0.66 from the surface-generator layer.
    The preparation of this material was carried out as described in Example 11. Example 16. The preparation of an electrical circuit is applied to the generator layers,
    i-i-photographic material containing the processed treatment with rubidium selenite and rubidium carbonate trigonap Coating in the form of a transport layer as follows. 50 wt.% Polycarbonate resin with a molar mass of 50,000-100,000 is mixed with 50 wt.% N, N-diphenyl-M, K -bis- (3-methylphenyl) - (1,1 - biphenyl) -4.4 diamine and 15% by weight methylene chloride and the mixture is applied as a coating with a thickness of 25 µm (dry) over the generator bed at a moisture content of 15% or less. Then the solution is dried at 70 ° C under vacuum for 18 hours,
    The fatigue dark decay of this material containing trigonal selenium with lithium selenite and lithium carbonate is determined as follows. The material is left in darkness for 15 hours before charging, after which it is subjected to one cycle of removal of charge. The cell is then charged to a maximum potential of 1140 V, initially measured after 0.06 s after charging; after 0.22 seconds, during which the material remains in the dark, its fatigue dark
    Nm selenium dispersed in an electrically active polymeric binder.
    40
    MatteriaJJ is prepared as in Example 11, with the difference that trigonal selenium is used, treated as in Example 5.
    Example 17. Preparation of an electrophotographic material with an additional layer of bonding.
    The material is prepared as in Example 12.
    The element is charged to maximum. a potential of 1500 V and the potential is measured first 0.06 s after charging; after 0.22 seconds, during which the material remains in the dark, its fatigue dark potential drop decreases to 1440 V. After 0.66, the surface potential drops to 1360 V, which indicates that the dark drop is 140 V. .
    50
    56
    the potential drop is 140 V, since the surface potential decreases to 1000 V. After 0.66 s
    the surface potential is 880 V, which indicates that the dark fall is 260 V.
    Example 14. Preparation of electrophotographic Mcl material containing trigonal selenium treated with potassium selenite to potassium carbonate dispersed in an electrically active polymer binder
    The material is prepared as in Example 11, with the difference that trigonal selenium is used, treated as in Example 4.
    Example 15. Production of electrophotographic material with an additional layer of binder.
    The material is ready tj as in example 12.
    The material is charged to a maximum potential of 1400 V. After 0.22 seconds, during which the material remains in the dark, its fatigue dark potential drop is 80 V, i.e. surface potential drops
    the potential is 1240 V, which corresponds to a dark fall of 160 V.
    Р- ° 320 V. After 0.66 from the surface
    Nm selenium dispersed in an electrically active polymeric binder.
    40
    MatteriaJJ is prepared as in Example 11, with the difference that trigonal selenium is used, treated in Example 5.
    Example 17. Preparation of electrophotographic material with an additional layer of bonding.
    The material is prepared as in Example 12.
    The cell is charged to a maximum potential of 1500 V and the potential is measured first 0.06 seconds after charging; after 0.22 seconds, during which the material remains in the dark, its fatigue dark potential drop decreases to 1440 V. After 0.66, the surface potential drops to 1360 V. This indicates that the dark drop is 140 V.
    50
    56
    Example 18: Preparation of electrophotographic material containing cesium selenite treated with cesium carbonate and trigonal selenium dispersed in an electrically active binder.
    The material was prepared as 6 of Example 11, but using trigonal selenium, treated as in Example 6.
    Example 19. Suppression of electrophotographic material with an additional layer of the binder.
    The material is prepared as in Example 12.
    The material is left before charging for 15 hours in the dark, after which it is subjected to one cycle of removal of charge. The material is then charged to a maximum potential of 1540 V, initially measured after 0.06 s after charging; after 0.22 seconds, during which the material remains in the dark, its fatigue dark potential drop is VO B, since its surface potential drops to 1460 V, 0.66 seconds later, its surface potential drops to 1400 V, i.e. . dark decline is 140 V.
    The table shows the indicators of electrophotographic material with
    Offer material
    1100 920 77016.0
    Known material
    1140 1000 88012.0
    1400 1320 1240: 6.0
    1540 1460 1400. 4.1
    1500 1440 13605.5
    1090 980 9107.0
    Nation: Thickness 25 microns;
    charge density of 1.2-103 C / m
    VNIIDI; Order .5819 / 39. Circulation 421
    Random polygons pr-tie, Uzhgorod, st. Project, 4
    using treated trigonal selenium.
    权利要求:
    Claims (2)
    [1]
    1. An electrophotographic material consisting of an electrically conductive substrate and a layer of a photoconductor deposited on it based on trigonal selenium dispersed in an organic resin, characterized in that, in order to improve the quality of the material by reducing the dark decay of the material. after its cyclic use, as a photoconductor it contains trigonal selenium treated with a hydroxide, carbonate, acetate or selenite of a substance selected from the group including sodium, potassium, lithium, rubidium and cesium, at their content in the photoconductor layer, equal to 0.6-12.0% by weight of trigonal selenium.
    [2]
    2. A pop material 1, characterized in that it further comprises a binder layer of an electrically insulating organic resin deposited on the photoconductor layer.
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    引用文献:
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    US3685989A|1970-12-18|1972-08-22|Xerox Corp|Ambipolar photoreceptor and method of imaging|
    US3954464A|1974-05-28|1976-05-04|Xerox Corporation|Method of fabricating a composite trigonal selenium photoreceptor|
    US3961953A|1974-05-28|1976-06-08|Xerox Corporation|Method of fabricating composite trigonal selenium photoreceptor|
    US3911091A|1974-06-21|1975-10-07|Xerox Corp|Milling trigonal selenium particles to improve xerographic performance|
    US3981728A|1974-10-29|1976-09-21|Xerox Corporation|Xerographic imaging member having hexagonal selenium in inter-locking continuous paths|
    US3928036A|1974-10-29|1975-12-23|Xerox Corp|Flexible xerographic photoreceptor element|
    US4050935A|1976-04-02|1977-09-27|Xerox Corporation|Trigonal Se layer overcoated by bisphenylmethane containing polycarbonate|JPS6255788B2|1980-12-16|1987-11-20|Fuji Photo Film Co Ltd|
    CA1231971A|1983-10-14|1988-01-26|Trevor I. Martin|Process for preparing aryl amines|
    US4543314A|1983-12-01|1985-09-24|Xerox Corporation|Process for preparing electrostatographic photosensitive device comprising sodium additives and trigonal selenium particles|
    KR920013340A|1990-12-08|1992-07-28|강진구|Reel Disc Braking System for Tape Recorder|
    JPH05216260A|1992-02-05|1993-08-27|Fuji Xerox Co Ltd|Electrophotographic sensitive body|
    JP5024567B2|2008-03-29|2012-09-12|三菱マテリアル株式会社|Crystalline selenium powder and method for producing the same|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US83313077A| true| 1977-09-14|1977-09-14|
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