CN113093488A

CN113093488A - PIP intelligent regeneration method

Info

Publication number: CN113093488A
Application number: CN202110374809.0A
Authority: CN
Inventors: 余荣清; 张培兴; 葛美珍; 周维强; 吕飞
Original assignee: SUZHOU GOLDENGREEN TECHNOLOGIES Ltd
Current assignee: SUZHOU GOLDENGREEN TECHNOLOGIES Ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-07-09

Abstract

The invention discloses an intelligent PIP regeneration method, which comprises the steps of judging, stripping and repairing, respectively preparing CT stripping liquid, CG stripping liquid and UC stripping liquid, and respectively preparing charge blocking layer material solution, charge generation layer material solution and charge transport layer material solution for selective coating to realize organic photoconductor regeneration. The preparation method has strong pertinence, and PIP recoating regeneration can be carried out according to actual conditions; the process is clear, the process and the intelligence degree in each operation step are high, the large-scale popularization and application of processing enterprises are very convenient, and the use and popularization value is very high; the organic photoconductor recoated and regenerated by the method has good printing effect, can control the thickness of the charge transport layer in a larger range, and can effectively prolong the service life of the product. The color tone and the cross color are not obvious even when the continuous ultrahigh speed printing is carried out, and the problems of ghost image and the like which are easy to appear in the high speed printing are not caused.

Description

PIP intelligent regeneration method

Technical Field

The invention discloses an intelligent PIP regeneration method, and belongs to the technical field of organic photoconductor processing.

Background

Organic Photoconductors (OPCs) are core components in modern office equipment such as copiers, laser printers, laser facsimile machines, multifunctional digital integrated machines, etc., and are mainly used for realizing photoelectric conversion and imaging technologies, and are photoelectric conversion devices formed by coating an Organic photoconductive material layer on a surface layer of a conductive substrate, as disclosed in patents CN200910032466.9 and CN201811116732.1, the Organic photoconductors generally comprise a conductive substrate, and a charge blocking layer, a charge generation layer and a charge transport layer sequentially coated on the surface of the conductive substrate from inside to outside.

In the prior art, most of the photoelectric conversion devices are used in a printing mode of an aluminum tube substrate and a gear drive. The aluminum tube substrate is coated with a polymer film on the outer side, and after being used for a plurality of periods, the aluminum tube substrate cannot be used and is discarded due to mechanical abrasion, photoelectric fatigue and the like. The direct discarding of the discarded organic photoconductor drum causes resource waste and environmental pollution, so that the polymer film on the surface of the base of the old organic photoconductor drum needs to be removed to regenerate the drum base. Chinese patent No. cn200910017237.x discloses a method for recovering an aluminum tube substrate and regenerating a photoelectric conversion device. However, this method can only be used to integrally release the charge blocking layer, the charge generation layer and the charge transport layer as the functional layer of the polymer film to produce a recyclable aluminum tube substrate, and then coat the charge blocking layer, the charge generation layer and the charge transport layer on the surface of the aluminum tube substrate to form the polymer film. When only one or two or three polymer thin film functional layers of the photoelectric conversion device are damaged and all the layers are removed, waste is generated greatly. Moreover, in the face of the demand of ultra-high speed printing, the traditional gear drive is difficult to meet the requirement of printing life, and the small-width OPC taking the traditional aluminum pipe as a base material is difficult to avoid the problems of color attenuation, image memory, poor overprint and the like caused by continuous printing.

The novel high-speed digital printing machine adopts a rotor drive OPC mode to replace gear drive, the photosensitive assembly adopts a working mode that a flexible photosensitive belt (PIP) is attached to the surface of a rotor, the problems of the service life of the gear, the drive speed and the like are effectively solved, and the applicability of the photosensitive belt with larger breadth also weakens the related problems caused by the fatigue of the traditional OPC. But the product of the mode cannot be popularized and applied at home due to foreign technology blockade and consumable binding market strategies. In addition, the current products of the domestic OPC industry are all applied to rigid substrates, the flex-fold resistance of the coating is not taken into consideration, and the OPC coating process of the flexible substrate is not explored.

In summary, how to provide a method for regenerating PIP while ensuring the use effect so as to make up for many defects and shortcomings existing in the prior art becomes a problem to be solved by those skilled in the art.

Disclosure of Invention

The present invention is to solve the above problems and provide an intelligent PIP reproduction method.

In order to achieve the purpose, the invention provides the following technical scheme:

an intelligent PIP regeneration method comprises the following steps,

a judging step, namely determining the damage level of the PIP;

a stripping step, namely determining the selection of stripping liquid and the sequential use sequence of the stripping liquid according to the damage grade;

and a repairing step, namely preparing corresponding coating solutions, and coating the surfaces of the PIPs subjected to the peeling step in sequence to form regeneration of the PIPs.

Preferably, in the determining step, the "determining the damage level of the PIP" specifically includes determining the damage level by appearance color comparison.

Preferably, in the judging step,

when the PIP surface is slightly worn or has dark color, the charge transport layer needs to be stripped and regenerated;

when the surface of the PIP is blue, the charge generation layer and the charge transmission layer need to be stripped and regenerated;

when the PIP surface presents a bright white aluminum plastic film bottom layer, the charge blocking layer, the charge generation layer and the charge transmission layer all need to be stripped and regenerated.

Preferably, the step of peeling off, namely determining the selection of the peeling liquid and the sequential use sequence of the peeling liquid according to the damage grade, specifically comprises the steps of judging the functional layer to be peeled off according to the damage grade, and selecting and using the peeling liquid to peel off the functional layer by layer according to the sequence of the functional layer from outside to inside until all the functional layer to be peeled off is peeled off.

Preferably, in the peeling step, when only the charge transport layer needs to be peeled, the method includes the following steps of cleaning and drying the PIP;

preparing a CT stripping solution; the CT stripping liquid is one or a mixture of ester solvents, halogenated hydrocarbon solvents and ether solvents;

and soaking the PIP in the CT stripping liquid to remove the charge transport layer, wherein the soaking time is not less than 30 minutes.

Preferably, the CT stripping solution is a mixture of tetrahydrofuran and toluene, and the mass percentage of the tetrahydrofuran to the toluene is 1: 0.5-2.0.

Preferably, the peeling step, when the charge generation layer is to be peeled, includes the steps of,

preparing CG stripping liquid; the CG stripping liquid is one or a mixture of several of alcohols, ketones, ethers and ester solvents;

and soaking the PIP with the charge transport layer removed in the CG stripping liquid to remove the charge generation layer, wherein the soaking time is not less than 30 minutes.

Preferably, the CG stripping liquid is a mixture of butanone and diethylene glycol monomethyl ether, and the mass percentage of the butanone to the diethylene glycol monomethyl ether is 1: 1.5-4.

Preferably, the peeling step, when the charge blocking layer needs to be peeled off, comprises the following steps,

preparing UC stripping liquid; the UC stripping liquid is one or a mixture of more of alcohols, aldehydes and aromatic hydrocarbon solvents;

and soaking the PIP with the charge generation layer removed in the CG stripping liquid to remove the charge blocking layer, wherein the soaking time is not less than 30 minutes.

Preferably, the UC stripping solution is a mixture of isopropanol and xylene, and the mass percentage of the isopropanol and the xylene is 1: 1.5-9.

Preferably, the peeling step further comprises the step of,

preparing microetching liquid; the microetching liquid is SPS and H₂SO₄The concentration of the mixture is 100-300 g/L;

and placing the PIP with the charge blocking layer removed in the microetching liquid for surface treatment.

Preferably, the repairing step of "preparing a corresponding coating solution and sequentially coating the surface of the PIP after the peeling step to form a reproduction of the PIP" specifically includes,

preparing a UC solution, a CG solution and a CT solution;

according to the PIP stripped structure, selectively coating UC solution, CG solution and CT solution on the surface of a conductive substrate in sequence, and forming a charge blocking layer, a charge generation layer and a charge transmission layer from inside to outside on the surface of the conductive substrate respectively; or a charge generation layer and a charge transmission layer are formed on the surface of the conductive substrate from inside to outside;

the charge transport layer film forming material accounts for 60-90% of the total mass percentage;

the charge blocking layer inorganic filler accounts for 0-50% of the total mass percentage.

Preferably, the thickness of the conductive substrate is 10-300um, and the thickness of the charge blocking layer is 0.5-10 um; the thickness of the charge generation layer is 0.1-2.5 μm; the thickness of the charge transport layer is 5-40 μm.

Compared with the prior art, the invention has the beneficial effects that: the preparation method has strong pertinence, and can intelligently perform PIP selective stripping recoating regeneration according to actual conditions; the process is clear, the process and the intelligence degree in each operation step are high, the large-scale popularization and application of processing enterprises are very convenient, and the use and popularization value is very high; the organic photoconductor recoated and regenerated by the method has good printing effect, can control the thickness of the charge transport layer in a larger range, and can effectively prolong the service life of the product. The color tone and the cross color are not obvious even when the continuous ultrahigh speed printing is carried out, and the problems of ghost image and the like which are easy to appear in the high speed printing are not caused.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.

The invention provides an intelligent PIP regeneration method, which comprises the following steps,

a judging step, namely determining the damage level of the PIP;

In the judging step, "determining the damage level of the PIP" specifically includes determining the damage level by comparing the appearance colors. When the PIP surface is slightly worn or has dark color, the charge transport layer needs to be stripped and regenerated; when the surface of the PIP is blue, the charge generation layer and the charge transmission layer need to be stripped and regenerated; when the PIP surface presents a bright white aluminum plastic film bottom layer, the charge blocking layer, the charge generation layer and the charge transmission layer all need to be stripped and regenerated.

The method is based on the technical scheme of the invention, accurately determines the damage degree of the PIP, can selectively strip the damaged layer and then recoat, namely judges the functional layer to be stripped according to the damage grade, and sequentially selects and uses a stripping liquid to strip the functional layer by layer according to the sequence of the functional layer from outside to inside until the functional layer to be stripped is completely stripped.

When only the charge transport layer needs to be peeled off, the method includes the following steps (a),

cleaning and drying PIP;

The CT stripping liquid is preferably a mixture of tetrahydrofuran and toluene; more preferably, the mass percentage of the two components is 1: 0.5-2.0.

When the charge transport layer and the charge generation layer are to be peeled off, the method comprises the following step (b),

and (c) soaking the PIP after the removal of the charge transport layer or after the treatment in the step (a) in the CG peeling liquid to remove the charge generation layer, wherein the soaking time is not less than 30 minutes.

The CG stripping liquid is preferably a mixture of butanone and diethylene glycol monomethyl ether; more preferably, the mass percentage of the two is 1: 1.5-4.

When the charge transport layer, the charge generation layer and the charge blocking layer need to be stripped, the method comprises the following steps (C),

and (c) soaking the PIP after the removal of the charge generation layer or after the treatment in the step (b) in the CG peeling liquid to remove the charge blocking layer, wherein the soaking time is not less than 30 minutes.

The UC stripping liquid is preferably a mixture of isopropanol and xylene; more preferably, the mass percentage of the two is 1: 1.5-9.

The present invention further comprises the step (d),

preparing microetching liquid;

placing the PIP after removing the charge blocking layer or after being processed by the step (c) in the microetching solution to perform surface treatment.

The surface treatment is any treatment mode which can remove residual organic layers and oxide layers on the surface of the PIP substrate conductive coating and promote the surface of the PIP conductive coating to form a structure favorable for adhesion. The method is not limited to physical treatment such as nylon cloth grinding, or chemical treatment such as peracetic acid + sulfuric acid treatment.

Preferably, the surface treatment is a chemical treatment, more preferably SPS + H₂SO₄The concentration of the mixture is generally 100-300 g/L. The degree of treatment is determined by the different conductive coatings to be conductiveComplete removal of the coating surface contaminants was used as a measure.

As described above, the intelligent PIP recycling method according to the present invention may be a continuous stripping step, or may selectively take different steps according to the recycled flexible photo-sensitive tape (PIP), or may take corresponding stripping steps according to requirements.

In the repairing step of the present invention, "preparing the corresponding coating solution, and sequentially coating the surface of the PIP after the peeling step to form the regeneration of the PIP" specifically includes the following steps,

preparing a UC solution, a CG solution and a CT solution;

selectively coating a UC solution, a CG solution and a CT solution on the surface of a conductive substrate according to the structure of the PIP, and respectively forming a charge blocking layer, a charge generation layer and a charge transmission layer from inside to outside on the surface of the conductive substrate; or a charge generation layer and a charge transmission layer are formed on the surface of the conductive substrate from inside to outside;

The thickness of the conductive substrate is 10-300um, and the thickness of the charge blocking layer is 0.5-10 um; the thickness of the charge generation layer is 0.1-2.5 μm; the thickness of the charge transport layer is 5-40 μm.

According to the PIP structure, a UC solution, a CG solution and a CT solution are selectively coated on the surface of a conductive substrate, specifically:

when the structure of the PIP is only stripped of the charge transport layer or is the PIP processed through the step (a), a CT solution is coated on the surface of the PIP to form the charge transport layer.

When the structure of the PIP is stripped of the charge transport layer and the charge generation layer or is the PIP processed by the steps (a) and (b), the CT solution and the CG solution are coated on the surface of the PIP to form the charge transport layer and the charge generation layer.

Forming a charge blocking layer, a charge generating layer and a charge transmitting layer from inside to outside on the surface of the conductive substrate when the structure of the PIP is stripped of the charge blocking layer, the charge transmitting layer and the charge generating layer or is the PIP processed by the steps (a), (b), (c) and/or (d); or a charge generation layer and a charge transmission layer are formed on the surface of the conductive substrate from inside to outside.

In the above process, the preparation method of the CT solution includes the following steps:

and dissolving the mixture of the binder resin, the charge transport material and the additive according to the solid part ratio of 1: 1-10 to prepare a charge transport layer material solution.

The charge transmission material is one or more of polyethylene resin, acrylic resin, polyamide resin, polycarbonate, polyimide resin, vinyl chloride resin, vinyl acetate resin, phenolic resin, polyacrylamide resin, polyurethane resin, polyvinyl acetal resin, polyvinyl alcohol resin, polyurethane resin, polyacrylic resin, polyvinyl pyridine resin and water-soluble polyester resin.

The adhesive resin is one or more of polycarbonate resin, acrylic resin, polyacrylonitrile resin, phenolic resin and copolymerized aromatic resin.

The additive is one or more of acrylate, organic siloxane compound, aliphatic ether compound and amino propylene compound.

The solvent is any one or more of aromatic hydrocarbons, ketones, halogenated hydrocarbons and petroleum ether. More preferably, the solvent is a mixed solvent of toluene and tetrahydrofuran, and the mass ratio of toluene to tetrahydrofuran is 1: 1-5.

The preparation method of the CG solution comprises the following steps:

adding a charge generation material into a solution of a binder resin, wherein the mass ratio of the charge generation material to the binder resin to a solvent is 1: 0.3-3: 80-99, grinding and dispersing the mixture, and controlling the particle size within 0.5-30 mu m to prepare a charge generation layer material solution.

The charge generating material is an inorganic photoconductive material and comprises selenium and compounds thereof, cadmium sulfide and the like; or organic pigments including polycyclic quinone pigments, squarylium pigments, azo pigments, dithio pigments, indigo pigments, perylene pigments, anthanthrone pigments, phthalocyanine pigments, benzimidazolone pigments, quinacridone pigments, and the like. Preferably, the charge generation material is a phthalocyanine pigment or an azo pigment.

The adhesive resin is one or more of polyvinyl butyral resin or acrylic resin.

The solvent is one or more of low boiling point ketones, lipids, alcohols and the like. More preferred is a mixed solvent of one or more of ethanol, methyl ethyl ketone and ethyl acetate.

The preparation method of the UC solution comprises the following step two

Taking a certain amount of dispersing agent and inorganic filler, respectively adding the dispersing agent and the inorganic filler into an alcoholic solution of one or a mixture of phenolic resin, acrylic resin or nylon resin, and carrying out ball milling and dispersion for 3-6 hours to prepare a charge barrier layer material solution with the solid content of 10-30%.

As the inorganic filler, any inorganic filler particles that can be generally used for OPC can be used, and more specifically, metal oxide particles such as titanium dioxide, aluminum oxide, zirconium oxide, zinc oxide, and iron oxide, inorganic salt particles such as magnesium silicate, calcium titanate, and barium sulfate, and metal-free compounds such as silica and silicon nitride can be cited. The metal oxide particles having a band gap of 2eV to 5eV are preferable, and one kind or a mixture of several kinds may be used. Preferably, the inorganic filler is one or a mixture of titanium dioxide particles, zinc oxide particles and tin oxide particles.

As the dispersant, a dispersant generally used for dispersing powder, specifically, a conventional dispersant such as stearic acids, polyhydric alcohols, silicones, acrylates, inorganic silicates and the like can be used. Preferred is a silicone dispersant, and more preferred is one or a mixture of two or more of dimethyl silicone oil and aminosilicone.

The substrate is any flexible substrate that can retain its size and strength above 130 ℃. More preferred are PET substrates, PVC substrates, HDPE substrates, PI substrates, and the like. The thickness of the base material is 10-300um, and the conductive coating is any processable coating which is not limited to a metal coating, an inorganic conductive coating, an organic conductive coating and a composite conductive coating. The coating mode can be spraying, roll coating, offset printing, sputtering, deposition and the like.

Example 1:

firstly, respectively preparing a CT stripping solution, a CT stripping solution and a UC stripping solution.

Wherein the CT stripping solution is a mixed solution of 60% of tetrahydrofuran and 40% of toluene; the CG stripping liquid is a mixed liquid of 40% of butanone and 60% of diethylene glycol monomethyl ether; the UC stripping solution is a mixed solution of 70% of isopropanol and 30% of dimethylbenzene.

And secondly, respectively preparing a charge blocking layer material solution, a charge generation layer material solution and a charge transport layer material solution.

2-1, mixing and dissolving 30g of alcohol-soluble nylon resin (400 g of ethanol) for 4 hours at 50 ℃ to prepare a charge barrier material solution for later use.

2-2, mixing 15g of titanyl phthalocyanine, 30g of polyethylene glycol butyral (manufactured by kuraray, model 120s) and 800g of toluene, grinding for 4 hours, and preparing a charge generation material solution for later use after uniform ultrasonic dispersion.

2-3, fully dissolving and mixing 50g N, N ' -diphenyl-N, N ' -bis (4-methylphenyl) -4, 4 ' -biphenyldiamine, 150g of polycarbonate resin, 500g of tetrahydrofuran and 500g of toluene, grinding for 1 hour, and preparing a charge transport material solution for later use.

The third step: fixing PIP to be regenerated on the wall of stainless steel cylinder in an attaching manner, soaking the PIP in the CT stripping solution, CG stripping solution and UC stripping solution prepared in the first step for 30min respectively, and stripping off each coating, wherein the solution temperature is controlled at 20-30 ℃. And (3) carrying out surface treatment on the PIP subjected to the coating stripping in a surface treatment liquid prepared from sodium persulfate and sulfuric acid, and then drying.

And fourthly, fixing the flexible PET substrate with the surface being sputtered with the aluminum coating on the stainless steel cylinder wall, sequentially dipping the charge blocking layer solution, the charge generating layer solution and the charge conducting layer solution which are prepared in the previous steps on the surface of the substrate, and baking the substrate in a circulating hot air oven at 120 ℃ for 60 minutes to obtain the PIP after recoating. Wherein the thickness of the charge blocking layer is 5um, the thickness of the charge generation layer is 0.5um, and the thickness of the charge transmission layer is 10 um.

Example 2:

except that in the process of preparing the charge transport material solution in step 2-3, N ' -diphenyl-N, N ' -bis (4-methylphenyl) -4, 4 ' -biphenyldiamine was changed to 50g or 200g of polycarbonate resin, and the final film thickness of the charge transport layer was changed to 16 μm, the same procedure was followed as in example 1.

Example 3:

except that in the third step of preparing the charge transport material solution, N ' -diphenyl-N, N ' -bis (4-methylphenyl) -4, 4 ' -biphenyldiamine was changed to 9-ethylcarbazole-3-carbaldehyde-diphenylhydrazone, the procedure was as in example 1.

Example 4:

the same procedure as in example 1 was repeated except that only the CT layer was peeled off in the peeling step of the coating layer in the first step and only the charge transport layer was recoated in the recoating step in the fourth step.

Example 5:

the same procedure as in example 1 was repeated except that only the CT layer and the CG layer were peeled off in the peeling-off step of the coating in the first step and only the charge generation layer and the charge transport layer were peeled off in the recoating in the fourth step.

The photoelectric property data table of the PIP reproduced by embodiments 1 to 5 of the present invention is as follows:

serial number	Charging potential (V)	Blind failure (V/S)	Residual potential (-V)
				Example 1	-660	8.2	-60
Example 2	-620	9.0	-65
				Example 3	-630	10.3	-55
Example 4	-650	7.5	-70
				Example 5	-630	8.5	-60

The PIP characteristics of the coating prepared by the technology of the invention are shown in the table above, the blackness of the black printing product after the heat engine reaches 1.44, the blackness after 5000 continuous pages reaches 1.38, no obvious color cross and light color exist, and the color phase after the machine self-correction is equivalent to that of the original package.

It can be seen from the above description and examples that the organic photoconductor overcoated by the method of the present invention has good printing effect, and the thickness of the charge transport layer can be controlled in a wide range, thereby effectively improving the service life of the product. The color tone and the cross color are not obvious even when the continuous ultrahigh speed printing is carried out, and the problems of ghost image and the like which are easy to appear in the high speed printing are not caused.

Meanwhile, the preparation method has clear flow, high degree of flow and standardization in each operation step, great convenience for large-scale popularization and application of processing enterprises, and high use and popularization values.

In addition, the invention also provides technical inspiration for other technical schemes related to the preparation of flexible optical conductors in the same field, and has high reference and reference values.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A PIP intelligent regeneration method is characterized in that: comprises the following steps of (a) carrying out,

a judging step, namely determining the damage level of the PIP;

2. The intelligent PIP reproduction method of claim 1, wherein: in the judging step, the step of determining the damage level of the PIP specifically comprises the step of determining the damage level through appearance color comparison.

3. The intelligent PIP reproduction method of claim 2, wherein: in the step of judging,

4. The intelligent PIP reproduction method of claim 3, wherein: the step of peeling off, namely determining the selection of the peeling liquid and the sequential use sequence of the peeling liquid according to the damage grade, specifically comprises the steps of judging the functional layer to be peeled off according to the damage grade, and selecting and using the peeling liquid to peel off the functional layer by layer according to the sequence of the functional layer from outside to inside until all the functional layer to be peeled off is peeled off.

5. The intelligent PIP reproduction method of claim 4, wherein: in the peeling step, when only the charge transport layer needs to be peeled off, the method includes the steps of,

cleaning and drying PIP;

6. The intelligent PIP reproduction method of claim 5, wherein: the CT stripping liquid is a mixture of tetrahydrofuran and toluene, and the mass percentage of the tetrahydrofuran to the toluene is 1: 0.5-2.0.

7. The intelligent PIP reproduction method of claim 5, wherein: in the peeling step, when the charge generation layer is to be peeled off, the method includes the steps of,

8. The intelligent PIP reproduction method of claim 7, wherein: the CG stripping liquid is a mixture of butanone and diethylene glycol monomethyl ether, and the mass percentage of the two is 1: 1.5-4.

9. The intelligent PIP reproduction method of claim 7, wherein: in the stripping step, when the charge blocking layer needs to be stripped, the method comprises the following steps,

10. The intelligent PIP reproduction method of claim 9, wherein: the UC stripping solution is a mixture of isopropanol and xylene, and the mass percentage of the isopropanol to the xylene is 1: 1.5-9.

11. The intelligent PIP reproduction method of claim 9, wherein: the stripping step further comprises the following steps,

12. The intelligent PIP reproduction method of claim 1, wherein: in the repairing step, the step of preparing corresponding coating solutions and coating the surfaces of the PIPs subjected to the peeling step in sequence to form regeneration of the PIPs specifically comprises the steps of,

preparing a UC solution, a CG solution and a CT solution;

13. The intelligent PIP reproduction method of claim 12, wherein: the thickness of the conductive substrate is 10-300um, and the thickness of the charge blocking layer is 0.5-10 um; the thickness of the charge generation layer is 0.1-2.5 μm; the thickness of the charge transport layer is 5-40 μm.