CN107908088B - Photoconductive material for laser printing and method for preparing photosensitive drum - Google Patents
Photoconductive material for laser printing and method for preparing photosensitive drum Download PDFInfo
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- CN107908088B CN107908088B CN201711155793.4A CN201711155793A CN107908088B CN 107908088 B CN107908088 B CN 107908088B CN 201711155793 A CN201711155793 A CN 201711155793A CN 107908088 B CN107908088 B CN 107908088B
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- 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
Abstract
The invention relates to the field of laser printing and consumables thereof, in particular to a photoconductive material for laser printing and a method for preparing a photosensitive drum. The photoconductive material for laser printing is prepared with tungsten carbide powder 1-5 weight portions, nickel 1-3 weight portions, phthalocyanine compound 0.5-1.3 weight portions, silica 1.2-1.8 weight portions, silicon 0.5-0.7 weight portions and resin mixture 10-15 weight portions. The raw materials of the photoconductive material are well matched, so that the photoconductive material can have good photoconductivity and good wear resistance.
Description
Technical Field
The invention relates to the field of laser printing and consumables thereof, in particular to a photoconductive material for laser printing and a method for preparing a photosensitive drum.
Background
The photosensitive drum, also called a toner cartridge, is a core component of a laser printer. It is a photosensitive device, mainly made of photoconductive material. The basic working principle of the photoelectric conversion device is the photoelectric conversion process. It is used as a consumable material in a laser printer and its price is expensive. The photoconductive material commonly used for the photosensitive drum is cadmium sulfide (CdS) or selenium-arsenic (Se-As). Organic photoconductive materials (opc), and the like. Typically made of aluminum, and a photosensitive material coated on the substrate. However, the existing photosensitive drum is easy to have phenomena of hollow characters, lighter printing color, background scattering, line background and the like during printing. The poor matching of the light guide material with the substrate is mostly caused by the poor matching of the light guide material with the substrate or the poor matching of the light guide material with the substrate due to the insufficient properties of the light guide material.
Disclosure of Invention
The invention aims to provide a light guide material for laser printing, which has good matching between raw materials, can ensure good photoconductivity and has good wear resistance.
Another object of the present invention is to provide a method for manufacturing a photosensitive drum, which is simple in operation, and can prevent the optical material from being tightly bonded to the substrate, thereby effectively preventing the phenomenon of unclear printing due to the poor function between the optical material and the substrate.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the invention provides a light guide material for laser printing, which is prepared from 1-5 parts of tungsten carbide powder, 1-3 parts of nickel, 0.5-1.3 parts of phthalocyanine compound, 1.2-1.8 parts of silicon dioxide, 0.5-0.7 part of silicon and 10-15 parts of resin mixture in parts by weight.
The invention provides a method for preparing a photosensitive drum by using the photoconductive material for laser printing, which comprises the following steps: 1-5 parts of tungsten carbide powder, 1-3 parts of nickel, 1.2-1.8 parts of silicon dioxide and 0.5-0.7 part of silicon are heated and melted to obtain a first mixture.
0.5 to 1.3 parts of phthalocyanine compound and 10 to 15 parts of resin mixture are mixed and coated on a substrate, and then the first mixture is coated on the substrate.
The light guide material for laser printing of the embodiment of the invention has the beneficial effects that: the photoconductive material for laser printing provided by the invention is prepared from 1-5 parts of tungsten carbide powder, 1-3 parts of nickel, 0.5-1.3 parts of phthalocyanine compound, 1.2-1.8 parts of silicon dioxide, 0.5-0.7 part of silicon and 10-15 parts of resin mixture, and all the substances have mutual synergistic action, so that the photoconductive performance of the photoconductive material is improved, and meanwhile, the fatigue resistance and the wear resistance of the photoconductive material are improved, and the prepared photosensitive drum has a simple structure but a longer service life.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
In the description of the present invention, it should be noted that the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
The following provides a detailed description of a photoconductive material for laser printing and a method for manufacturing a photosensitive drum according to an embodiment of the present invention.
The light guide material for laser printing is prepared from 1-5 parts by weight of tungsten carbide powder, 1-3 parts by weight of nickel, 0.5-1.3 parts by weight of phthalocyanine compound, 1.2-1.8 parts by weight of silicon dioxide, 0.5-0.7 part by weight of silicon and 10-15 parts by weight of resin mixture. Preferably, the photoconductive material for laser printing is made of 2-3 parts of tungsten carbide powder, 1.5-2.5 parts of nickel, 0.7-1 part of phthalocyanine-based compound, 1.4-1.6 parts of silicon dioxide, 0.5-0.7 part of silicon and 11-13 parts of resin-based compound.
The existing light guide material needs to cover a plurality of layers of light guide materials so as to improve the light guide performance of the light guide material, but poor matching between the light guide material and a substrate is easily caused by arranging the plurality of layers of light guide materials, and meanwhile, the single light guide material is adopted, so that the light guide performance is single, and the light guide material cannot have good light guide performance. If only mixing various existing light guide materials, the light guide performance cannot be improved well, and meanwhile, the conflict between the performances is likely to be caused, so that the light guide performance is reduced, and meanwhile, the matching between the light guide material and the substrate is further reduced. Therefore, the invention organically combines the tungsten carbide powder, the nickel, the phthalocyanine compound, the silicon dioxide, the silicon and the resin mixture on the basis of creative work of the inventor to obtain the photoconductive material with good photoconductive performance and good matching with the matrix. Meanwhile, the good light guide rate of the light guide material can be realized only by adopting the raw materials in the 6 without adding other raw materials or materials with light guide performance, and the addition of other materials with light guide performance can reduce the light guide rate, fatigue resistance or wear resistance of the light guide material.
Specifically, the tungsten carbide powder is a good conductor of electricity and heat, and has good wear resistance. The resin mixture can provide good adhesive force for the photoconductive material and can provide organic photoconductive performance for the photoconductive material at the same time, the transition of electrons is promoted, the nickel and phthalocyanine compounds can promote the transition of the electrons and ensure the activity of the transition, and the silica and the silicon are assisted to promote the generation of electron-hole pairs, so that the increase of photo-generated carriers can be ensured, the scattering and diffusion of the photoconductive material to light rays are reduced, the stability of refracted light rays is ensured, the printing effect is ensured, and the matching of the photoconductive material and a matrix is improved.
Further, tungsten carbide powder (WC) is a main raw material for producing cemented carbide, and has a chemical formula of WC. The tungsten carbide powder is a black hexagonal crystal, has metallic luster and hardness similar to that of diamond, and is a good conductor of electricity and heat. In the embodiment of the invention, the tungsten carbide has good wear resistance, can improve the fatigue resistance and wear resistance of the light guide material, and has certain photoelectric conductivity.
Further, nickel is a metal element that is approximately silvery white, hard and ductile, and has ferromagnetism, and it can be highly polished and resistant to corrosion. Has magnetism and good plasticity. The addition of the metal nickel in the invention can not only increase the wear resistance of the light guide material, but also improve the plasticity of the light guide material, increase the bonding force between the light guide material and the substrate and increase the matching effect between the light guide material and the specific body.
The phthalocyanine compound is a compound with a large conjugated system of 18 electrons, the structure of the phthalocyanine compound is very similar to porphyrin widely existing in the nature, but the phthalocyanine compound is a compound completely synthesized by people, and the phthalocyanine compound with the crystal form α can have a stable conjugated system, can provide wear resistance for the photoconductive material, and simultaneously has a plurality of coordination points, so that a plurality of complexes can be formed, and then the photoconductive material can form electron-hole pairs more easily, and the conductivity of the photoconductive material is improved.
And the phthalocyanine silicon compound is preferably adopted, has better electron carrying capacity and high photosensitivity, improves the photoelectric conversion efficiency and improves the printing effect. Meanwhile, the phthalocyanine silicon compound has good stability, the fatigue resistance of the photoconductive material is improved, and the service life of the photosensitive drum is prolonged.
The dihydroxy phthalocyanine silicon has a highly conjugated structure of tetra-aza tetrabenzoporphyrin, is beneficial to generation of photon-generated carriers, and can promote the conductivity and the electric conductivity of the photoconductive material.
Further, the resin mixture includes a hydrazone compound, a diphenoquinone, and a thermoplastic resin. The hydrazone compound, the diphenoquinone and the thermoplastic resin are mutually synergistic to further improve the matching effect between the photoconductive material and the matrix, and meanwhile, the three are matched to also have the conductivity, and then the 3 substances are mutually synergistic with tungsten carbide powder, phthalocyanine compounds, silicon dioxide, silicon and other substances to further improve the conductivity of the conductive material.
Furthermore, the hydrazone compound is a benzimidazole acylhydrazone compound, the benzimidazole acylhydrazone compound is a compound with benzimidazole as a parent nucleus and containing acylhydrazone groups, the acylhydrazone has strong coordination capacity, and the benzimidazole has a broad-spectrum bioactive hybrid compound, and the benzimidazole and the acylhydrazone compound are combined to enable the benzimidazole to have dual response performance, so that the arrival point of the optical material can be improved, the electronic transition capacity can be improved, the energy required by the electronic transition can be reduced, the number of the electronic transitions can be increased, and the conductivity can be improved.
The diphenoquinone can load positive charges, has stable performance, can not generate ozone, and can further improve the environmental protection degree of the photoconductive material. And the compatibility between the thermoplastic resin and the benzimidazole acylhydrazone compound can be improved, the intermiscibility and the matching property of the raw materials are improved, and then the conductivity of the photoconductive material is integrally improved.
The thermoplastic resin has the properties of softening by heating and hardening by cooling, and does not react chemically, and such properties are maintained regardless of the number of times heating and cooling are repeated. The compatibility among all substances can be increased, all substances can well act with the matrix, and the plasticity of the light guide material is improved.
The thermoplastic resin includes any one of polyamide, polycarbonate, polyimide, or polyetherimide. Polyamides, commonly known as Nylon (Nylon), and the english name Polyamide, are a generic name for polymers containing amide groups in the repeating units of the macromolecular main chain. The polyamide can be prepared by ring-opening polymerization of lactam, or polycondensation of diamine and diacid. The PA has good comprehensive properties including mechanical property, heat resistance, abrasion resistance, chemical resistance and self-lubricity, has low friction coefficient and certain flame retardance, is easy to process, is suitable for being filled with glass fiber and other fillers for reinforcing modification, improves the performance and expands the application range.
Polycarbonates (PC for short) are high molecular polymers containing carbonate groups in the molecular chain, and are classified into various types, such as aliphatic, aromatic, aliphatic-aromatic, and the like, depending on the structure of the ester group. It has good electrical characteristics and good weather resistance.
Polyimide is a polymer having an imide ring (-CO-NH-CO-) in the main chain, and among them, a polymer having a phthalimide structure is most important. Polyimide is used as a special engineering material and has been widely applied to the fields of aviation, aerospace, microelectronics, nano-scale, liquid crystal, separation membranes, laser and the like. The polyimide has good dielectric property, can resist extremely low temperature and has very high irradiation resistance.
Polyetherimide (PEI) is a super engineering plastic made of amorphous polyetherimides, has the best high temperature resistance and dimensional stability, chemical resistance, flame retardance, electrical property, high strength, high rigidity and the like, and PEI resin can be widely applied to high temperature resistant terminals, IC bases, lighting equipment, FPCB (flexible printed circuit board), liquid conveying equipment, airplane internal parts, medical equipment, household appliances and the like.
The invention also provides a method for preparing a photosensitive drum by using the photoconductive material for laser printing, which comprises the following steps:
s1, preparing a first mixture;
1-5 parts of tungsten carbide powder, 1.2-1.8 parts of silicon dioxide and 0.5-0.7 part of silicon are heated and melted to obtain a first mixture in parts by weight. Specifically, under the protective gas atmosphere, tungsten carbide powder and nickel are melted at the temperature of 1000-1200 ℃, then the temperature is cooled to the temperature of 800-950 ℃, and then silicon dioxide and silicon are added for remelting. The heating and melting are carried out under the protective gas atmosphere, so as to prevent each raw material from being oxidized by air in the heating process, and further ensure the light guide performance of the light guide material. Generally, the melting point of tungsten carbide powder is above 2000 ℃, while the invention reduces the melting point by co-melting tungsten carbide and nickel, which can be melted with each other, possibly in the form of WC — Ni compounds. Then the heating temperature is reduced, and after 800-950 ℃, silicon dioxide and silicon are added, at which time, the silicon dioxide and the silicon can be melted, at which time, intercalation between the silicon dioxide, the silicon and the WC-Ni compound can be carried out in a form similar to layered graphene, that is, the silicon dioxide and the silicon can be inserted into the gaps of the WC-Ni compound molecules or the WC-Ni compound molecules are inserted into the silicon dioxide or the silicon molecular gaps.
After the tungsten carbide powder, nickel, silicon dioxide and silicon are melted for 1-2 hours and the above substances are completely reacted, the melt of the first mixture is cooled to 200-300 ℃. At this time, the first mixture still exists in a molten state and is completely cooled to be solid, so that repeated heating of the first mixture and subsequent damage to the structure of the substances in the first mixture during subsequent action of the first mixture and the substrate are avoided.
S2, preparing a second mixture;
mixing 0.5-1.3 parts of phthalocyanine compound and 10-15 parts of resin mixture, specifically mixing the phthalocyanine compound and the resin mixture with a solvent to obtain a second mixture, wherein the mass ratio of the mixture of the phthalocyanine compound and the resin mixture to the solvent is 1: 0.2-0.3, and then uniformly dispersing the phthalocyanine compound, the resin mixture and the solvent by using a ball mill, and simultaneously reducing the particle size of the phthalocyanine compound and the resin mixture, so that the second mixture can be uniformly coated on a substrate.
Furthermore, the solvent is any one of isopropanol, dichloromethane or cyclohexanone, and the phthalocyanine compound and the resin mixture can be well and uniformly mixed by adopting the substances, and meanwhile, the subsequent coating and the matrix are convenient.
S3, coating;
the second mixture is sprayed on the surface of the substrate by using an atomization film forming method, and nitrogen gas with the same temperature is sprayed on the other side of the surface of the substrate, so that the deformation of the substrate caused by different heating in the coating process of the surface of the substrate is prevented, and the reduction of the conductivity of the photosensitive drum is further prevented. Meanwhile, the second mixture can be applied to the surface of the substrate in a large amount and uniformly by the atomizing film-forming method.
The substrate is then suitably cooled to a temperature of 150 ℃ and 180 ℃ at which the second mixture has been combined with the substrate, and the first mixture is then applied to the substrate coated with the second mixture, which can be combined with the substrate without the substrate being deformed by too much temperature change. Meanwhile, the photosensitive drum is only provided with two photoconductive layers, the photoconductive rate of the two photoconductive layers which can be realized by a plurality of photoconductive layers in the prior art can be realized, even the photoconductive rate can be further improved, and the fatigue resistance and the wear resistance of the photoconductive material are also obviously improved. Meanwhile, the structure of the photosensitive drum is simplified, the matching between the photoconductive material and the base body is improved, and the situation that the photoconductive material is bonded too much on the base body, so that the matching effect of the photoconductive material and the base body is reduced is prevented.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
This example provides a photoconductive material for laser printing made of 1g of tungsten carbide powder, 1g of nickel, 0.5g of silicon dihydroxyphthalocyanine, 1.2g of silicon dioxide, 0.5g of silicon, and 10g of a resinous mixture. Wherein the resin mixture comprises benzimidazole acylhydrazone compounds, polyamide and diphenoquinone.
The embodiment also provides a method for preparing a photosensitive drum by using the photoconductive material for laser printing, which comprises the following steps:
s1, preparing a first mixture;
after 1g of tungsten carbide powder and 1g of nickel were melted at 1000 ℃ under a protective gas atmosphere, the temperature was cooled to 800 ℃, 1.2g of silica and 0.5g of silicon were added thereto and melted again for 1 hour, and then the melt of the first mixture was cooled to 200 ℃.
S2, preparing a second mixture;
mixing 0.5g of dihydroxy phthalocyanine silicon and 10g of resin mixture with a solvent to obtain a second mixture, wherein the mass ratio of the mixture of the dihydroxy phthalocyanine silicon and the resin mixture to the solvent is 1: 0.2, and then uniformly dispersing the mixture of the dihydroxy phthalocyanine silicon and the resin and the solvent by utilizing ball milling. Wherein the solvent is isopropanol.
S3, coating;
the second mixture was sprayed on the surface of the substrate using an atomizing film-forming method while nitrogen gas at the same temperature was sprayed on the other side of the surface of the substrate, and then the substrate was appropriately cooled so that the temperature of the surface of the substrate was 150 ℃, at which time the second mixture had been combined with the substrate, and then the first mixture was coated on the substrate coated with the second mixture.
Example 2
This example provides a photoconductive material for laser printing made of 5g of tungsten carbide powder, 3g of nickel, 1.3g of silicon dihydroxyphthalocyanine, 1.8g of silicon dioxide, 0.7g of silicon, and 15g of a resinous mixture. Wherein the resin mixture comprises benzimidazole acylhydrazone compounds, polycarbonate and diphenoquinone.
The embodiment also provides a method for preparing a photosensitive drum by using the photoconductive material for laser printing, which comprises the following steps:
s1, preparing a first mixture;
after melting 5g of tungsten carbide powder and 3g of nickel at 1200 ℃ under a protective gas atmosphere, the temperature was cooled to 950 ℃, 1.8g of silica and 0.7g of silicon were added and remelted for 2 hours, and then the melt of the first mixture was cooled to 300 ℃.
S2, preparing a second mixture;
mixing 1.3g of dihydroxy silicon phthalocyanine and 15g of resin mixture with a solvent to obtain a second mixture, wherein the mass ratio of the mixture of the dihydroxy silicon phthalocyanine and the resin mixture to the solvent is 1: 0.3, and then uniformly dispersing the mixture of the dihydroxy phthalocyanine silicon and the resin and the solvent by utilizing ball milling. Wherein the solvent is dichloromethane.
S3, coating;
the second mixture was sprayed on the surface of the substrate using an atomizing film-forming method while nitrogen gas at the same temperature was sprayed on the other side of the surface of the substrate, and then the substrate was appropriately cooled so that the temperature of the surface of the substrate was 180 ℃, at which time the second mixture had been combined with the substrate, and then the first mixture was coated on the substrate coated with the second mixture.
Example 3
This example provides a photoconductive material for laser printing, which was made of 2g of tungsten carbide powder, 1.5g of nickel, 0.7g of silicon dihydroxyphthalocyanine, 1.4g of silicon dioxide, 0.6g of silicon, and 11g of a resinous mixture. Wherein the resin mixture comprises benzimidazole acylhydrazone compounds, polyimide and diphenoquinone.
The embodiment also provides a method for preparing a photosensitive drum by using the photoconductive material for laser printing, which comprises the following steps:
s1, preparing a first mixture;
after 2g of tungsten carbide powder and 1.5g of nickel were melted at 1100 ℃ under a protective gas atmosphere, the temperature was cooled to 900 ℃, 1.4g of silica and 0.6g of silicon were added thereto and melted again for 1.5 hours, and then the melt of the first mixture was cooled to 250 ℃.
S2, preparing a second mixture;
mixing 0.7g of dihydroxy phthalocyanine silicon and 11g of resin mixture with a solvent to obtain a second mixture, wherein the mass ratio of the mixture of the dihydroxy phthalocyanine silicon and the resin mixture to the solvent is 1: 0.25, and then uniformly dispersing the mixture of the dihydroxy phthalocyanine silicon and the resin and the solvent by utilizing ball milling. Wherein the solvent is cyclohexanone.
S3, coating;
the second mixture was sprayed on the surface of the substrate using an atomizing film-forming method while nitrogen gas at the same temperature was sprayed on the other side of the surface of the substrate, and then the substrate was appropriately cooled so that the temperature of the surface of the substrate was 160 ℃, at which time the second mixture had been combined with the substrate, and then the first mixture was coated on the substrate coated with the second mixture.
Example 4
This example provides a photoconductive material for laser printing made of 3g of tungsten carbide powder, 2.5g of nickel, 1g of silicon dihydroxyphthalocyanine, 1.6g of silicon dioxide, 0.7g of silicon, and 13g of a resinous mixture. Wherein the resin mixture comprises benzimidazole acylhydrazone compounds, polyetherimide and diphenoquinone.
The embodiment also provides a method for preparing a photosensitive drum by using the photoconductive material for laser printing, which comprises the following steps:
s1, preparing a first mixture;
after 3g of tungsten carbide powder and 2.5g of nickel were melted at 1150 ℃ under a protective gas atmosphere, the temperature was cooled to 850 ℃, 1.6g of silica and 0.7g of silicon were added thereto and melted again for 1.5 hours, and then the melt of the first mixture was cooled to 280 ℃.
S2, preparing a second mixture;
mixing 1g of dihydroxy silicon phthalocyanine and 13g of resin mixture with a solvent to obtain a second mixture, wherein the mass ratio of the mixture of the dihydroxy silicon phthalocyanine and the resin mixture to the solvent is 1: 0.26, and then uniformly dispersing the mixture of the dihydroxy phthalocyanine silicon and the resin and the solvent by using a ball mill. Wherein the solvent is isopropanol.
S3, coating;
the second mixture was sprayed on the surface of the substrate using an atomizing film-forming method while nitrogen gas at the same temperature was sprayed on the other side of the surface of the substrate, and then the substrate was appropriately cooled so that the temperature of the surface of the substrate was 170 ℃, at which time the second mixture had been combined with the substrate, and then the first mixture was coated on the substrate coated with the second mixture.
Example 5
This example provides a photoconductive material for laser printing, which was made of 2.5g of tungsten carbide powder, 2g of nickel, 0.8g of silicon dihydroxyphthalocyanine, 1.5g of silicon dioxide, 0.6g of silicon, and 12g of a resinous mixture. Wherein the resin mixture comprises benzimidazole acylhydrazone compounds, polyamide and diphenoquinone.
The embodiment also provides a method for preparing a photosensitive drum by using the photoconductive material for laser printing, which comprises the following steps:
s1, preparing a first mixture;
after 2.5g of tungsten carbide powder and 2g of nickel were melted at 1050 ℃ under a protective gas atmosphere, the temperature was cooled to 880 ℃, 1.5g of silica and 0.6g of silicon were added and melted again for 1 hour, and then the melt of the first mixture was cooled to 220 ℃.
S2, preparing a second mixture;
mixing 0.8g of dihydroxy silicon phthalocyanine and 12g of resin mixture with a solvent to obtain a second mixture, wherein the mass ratio of the mixture of the dihydroxy silicon phthalocyanine and the resin mixture to the solvent is 1: 0.7, and then uniformly dispersing the mixture of the dihydroxy phthalocyanine silicon and the resin and the solvent by utilizing ball milling. Wherein the solvent is dichloromethane.
S3, coating;
the second mixture was sprayed on the surface of the substrate using an atomizing film-forming method while nitrogen gas at the same temperature was sprayed on the other side of the surface of the substrate, and then the substrate was appropriately cooled so that the temperature of the surface of the substrate was 165 ℃, at which time the second mixture had been combined with the substrate, and then the first mixture was coated on the substrate coated with the second mixture.
Examples of the experiments
Comparative example 1: a photosensitive drum was prepared by following the procedure of preparing a photosensitive drum in example 1 except that styryl triphenylamine was additionally added to the second mixture.
Comparative example 2: a photosensitive drum was produced in accordance with the method for producing a photosensitive drum in example 1, except that the ratio of the raw materials of the photoconductive material used was changed, and specifically, the photoconductive material was made of 0.5g of tungsten carbide powder, 4g of nickel, 2g of silicon dihydroxyphthalocyanine, 2g of silica, 1g of silicon, and 5g of a resin-based mixture.
The photoconductive drums of examples 1 to 5 and comparative examples 1 to 2 were subjected to the photoelectric property test, and the specific test results are shown in table 1. Specifically, the light intensity irradiated to the surface of the photosensitive drum by using a fluorescent lamp is 580-.
TABLE 1 optoelectronic Properties
From the results of table 1, it can be seen that the dark decay rates of the photoconductive materials of examples 1 to 5 are all significantly greater than that of the photoconductive material of comparative example 1, and are substantially 10 times as high as that of the photoconductive material of comparative example 1, indicating that the electron mobility is strong and the conductivity is extremely high. From the viewpoint of photosensitivity, the photosensitivity of the photoconductive materials of examples 1 to 5 was also much lower than that of the photoconductive material of comparative example 1, indicating that the photosensitivity of the photoconductive materials of examples 1 to 5 was good. The photoconductive materials of examples 1 to 5 also had a significantly higher charge potential than that of the photoconductive material of comparative example 1, and the photoconductive materials of examples 1 to 5 also had a significantly higher residual potential than that of the photoconductive material of comparative example 1, indicating that the photoconductive materials of examples 1 to 5 had high electrical conductivity and good fatigue resistance. The light guide material provided in example 1 does not need to add other substances with light guide performance, but adds other substances with light guide performance, so that the structure and the components of the light guide material provided in the invention can be changed, and the light guide performance, the fatigue resistance, the abrasion resistance and other performances are further reduced.
Similarly, it is understood from comparative examples 1 to 5 and comparative example 2 that changing the composition ratio of the optical waveguide material of the present invention results in deterioration of the optical waveguide properties and fatigue resistance, abrasion resistance, etc.
In summary, the photoconductive material for laser printing provided in embodiments 1 to 5 of the present invention is made of 1 to 5 parts of tungsten carbide powder, 1 to 3 parts of nickel, 0.5 to 1.3 parts of phthalocyanine compound, 1.2 to 1.8 parts of silica, 0.5 to 0.7 part of silicon, and 10 to 15 parts of resin mixture, and the substances cooperate with each other to improve the photoconductive performance of the photoconductive material and improve the fatigue resistance and wear resistance thereof, so that the prepared photoconductive drum has a simple structure but a long service life.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (9)
1. A light guide material for laser printing is characterized in that the light guide material is prepared from 1-5 parts of tungsten carbide powder, 1-3 parts of nickel, 0.5-1.3 parts of phthalocyanine compound, 1.2-1.8 parts of silicon dioxide, 0.5-0.7 part of silicon and 10-15 parts of resin mixture in parts by weight;
the preparation of the light guide material comprises the following steps: heating and melting 1-5 parts of tungsten carbide powder, 1-3 parts of nickel, 1.2-1.8 parts of silicon dioxide and 0.5-0.7 part of silicon by weight to obtain a first mixture;
under the protective gas atmosphere, melting the tungsten carbide powder and the nickel at the temperature of 1000-1200 ℃, cooling the tungsten carbide powder and the nickel to the temperature of 800-950 ℃, adding the silicon dioxide and the silicon for remelting;
cooling the first mixture to 200-300 ℃ after melting the tungsten carbide powder, the nickel, the silicon dioxide and the silicon for 1-2 hours;
then, 0.5-1.3 parts of phthalocyanine compound and 10-15 parts of resin mixture are mixed and coated on a substrate, and then the first mixture is coated on the substrate; then the substrate is cooled so that the temperature of the substrate surface is between 150 ℃ and 180 ℃.
2. The photoconductive material for laser printing according to claim 1, characterized in that it is made of, in parts by weight, 2 to 3 parts of the tungsten carbide powder, 1.5 to 2.5 parts of the nickel, 0.7 to 1 part of the phthalocyanine-based compound, 1.4 to 1.6 parts of the silica, 0.5 to 0.7 part of the silicon, and 11 to 13 parts of the resinous mixture.
3. The photoconductive material for laser printing according to claim 1, wherein the phthalocyanine-based compound is a phthalocyanine-based compound in a α crystal form.
4. The photoconductive material for laser printing according to claim 3, wherein the phthalocyanine-based compound is a phthalocyanine silicon compound.
5. The photoconductive material for laser printing according to claim 4, wherein the silicon phthalocyanine compound is silicon dihydroxyphthalocyanine.
6. The light guide material for laser printing according to claim 1, wherein the resin based mixture includes a hydrazone compound, a diphenoquinone, and a thermoplastic resin.
7. The photoconductive material for laser printing according to claim 6, wherein the hydrazone compound is a benzimidazole acylhydrazone compound.
8. The lightguide material of claim 6, wherein the thermoplastic resin comprises any one of polyamide, polycarbonate, polyimide, or polyetherimide.
9. The photoconductive material for laser printing according to claim 1, wherein the phthalocyanine-based compound and the resin-based mixture are mixed and dispersed uniformly by ball milling.
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| CN201711155793.4A CN107908088B (en) | 2017-11-20 | 2017-11-20 | Photoconductive material for laser printing and method for preparing photosensitive drum |
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| CN201711155793.4A CN107908088B (en) | 2017-11-20 | 2017-11-20 | Photoconductive material for laser printing and method for preparing photosensitive drum |
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| CN107908088B true CN107908088B (en) | 2020-04-03 |
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| CN201711155793.4A Active CN107908088B (en) | 2017-11-20 | 2017-11-20 | Photoconductive material for laser printing and method for preparing photosensitive drum |
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| US5124219A (en) * | 1989-03-15 | 1992-06-23 | Minolta Camera Kabushiki Kaisha | Photosensitive member for electrophotography comprising specified nylon copolymer |
| US6569587B2 (en) * | 1999-01-29 | 2003-05-27 | Fuji Electric Imaging Co., Ltd. | Photosensitive body for electrophotography and manufacturing method for the same |
| CN1339543A (en) * | 2000-08-24 | 2002-03-13 | 天津市先立新技术有限公司 | Photosensitive phthalocyanine pigment and the process for preparing its photosensitive substance |
| JP5097410B2 (en) * | 2006-04-04 | 2012-12-12 | 株式会社リコー | Image forming apparatus and image forming method |
| US7838187B2 (en) * | 2007-08-21 | 2010-11-23 | Xerox Corporation | Imaging member |
| JP4618311B2 (en) * | 2008-03-19 | 2011-01-26 | 富士ゼロックス株式会社 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus |
| JP4702447B2 (en) * | 2008-12-25 | 2011-06-15 | 富士ゼロックス株式会社 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus |
| US20120244469A1 (en) * | 2011-03-22 | 2012-09-27 | Xerox Corporation | Tunable gloss using aerogel ceramic fillers added to viton coatings for fusing applications |
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