JPS6075843A - Image display device - Google Patents

Abstract

PURPOSE:To improve resistance to staining and durability with a device which forms directly a toner image on the surface of an image carrying body and displays repeatedly the image by incorporating a film formable fluororesin into the toner image forming surface of the image carrying body. CONSTITUTION:A photoconductive layer is used as an image carrying body to be repeatedly used and a toner image is directly formed in accordance with signal information on the surface of the image carrying body by a method of forming a toner image simultaneously with exposing or obtaining an electrostatic latent image by pin electrodes on the dielectric belt of the image carrying body and developing the same to the toner image. A fluororesin which can form a film when coated is incorporated into the toner image forming surface layer of the image carrying body to be repeatedly used of said device, by which the intended image display device is obtd. An adequate embodiment of the fluororesin is enumerated by a copolymer of fluoroolefin and hydroxyalkyl vinyl ether.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is applicable to, for example, electrical image information that is output from or read from an electronic computer or operating reading device, image information that is stored as a soft copy on magnetic tape or microfilm, etc. The present invention relates to a 1111 image display device that reproduces and displays images as visible images or is used as an image monitor in image forming equipment such as copying machines and office automation equipment.

More specifically, the present invention relates to an improvement of an image carrier of an apparatus that displays an image by creating a toner image corresponding to the input of the various information signals described above on a suitable image carrier surface as a display image. - Conventionally, as image display devices, For example, If, CIt T display devices and liquid crystal display devices Wi% are generally widely used, but these display devices such as JL etc. However, it cannot be said that this is necessarily sufficient. For example, looking at the recent development of office automation equipment, the display screens required for monitors such as word processors, microfilm retrieval, and optical disk memory are high-definition TTFI fixed images, while RT and liquid crystal displays require flicker or visual recognition. It is difficult to say that it is appropriate because of the angle dependence.

The present invention proposes a method for repeatedly forming toner images on a display screen as an apparatus particularly suitable for displaying high-quality still images. Depending on the information signal, various methods can be applied to the means for creating the toner image. For example, a method of forming a toner image at the same time as exposure using a photoconductive layer as an image carrier (Japanese Patent Application No. 56-19'i'410);
There is also a method of electrostatically charging the dielectric belt of the image carrier and converting it into a toner image (Utility Model Application No. 57-55
No. 061) Another method is to use an easily magnetized stylus to visualize magnetic powder or magnetic fluid toner on the surface of an image carrier in response to a magnetization signal.

In any case, these display images are normal ■1 child photos,
It is easy to understand that electrostatic printing and magnetic printing also provide high image quality since they do not involve a transfer process. Furthermore, it can be said that it is particularly excellent in displaying still images, since it can provide an image quality comparable to that of printing, even compared to the general-purpose display devices such as CRT and liquid crystal described above.

On the other hand, the problem with display devices using toner images is that since the same image carrier is used repeatedly, toner and the coloring materials used therein gradually adhere to the image display surface, resulting in significant contamination of non-image areas. It's on a skewer. That is, this method of display consists of the steps of forming a latent image on an image carrier by converting the information signal into light such as a laser beam, or time-series signals such as voltage or current, and then developing the image with toner to make it visible. Display 1! ! When the I image is no longer needed, it goes through an erasing process, and then an image pattern is created on the same image carrier surface using the same process as the old one, and the image is replaced and displayed. Therefore, contamination on the surface of the image carrier is l! This significantly deteriorated the quality of the I-image, and was a major hindrance to putting this type of display device into practical use. The above-mentioned method of obtaining images using a similar process is the 'FU baby photo shoot'.

There is MtiM, in which a toner image is created on an intermediate master such as electric J printing, magnetic printing, etc., and a printed image is obtained by transferring this to plain paper or the like. The intermediate masters used in these printing devices are used repeatedly, but as long as the surface of the intermediate master itself does not affect the transferred image even if the surface becomes contaminated, it would be problematic in practice. This can be said to be based on an essentially different perspective from the characteristics of the image bearing member used for.

The present invention has been described above. This is intended to improve the stain resistance of the surface of the image carrier used in the hl image display device 9-i.

Toner image removal surface and drawing, which are the cause of contamination,
Although it can be renumbered as a comprehensive technology related to the erasing process, as a result of examining it with particular focus on the surface layer of the image carrier, it was found that by containing a fluororesin capable of forming a film in the layer shown in Table 11ii, It was found that the degree of contamination was reduced by ML.

Accordingly, the object of the present invention is achieved by an image carrier having a surface layer containing a fluororesin which is coated with a cloth.

The coating film used in the present invention has a fluorine value that can be increased by using, for example, a copolymer using a fluoroolefin, cyclohexyl vinyl ether, alkyl vinyl ether, and hydroxyalkyl vinyl ether as monomers (fluoroolefins such as chlorotrifluoroethylene, tetrafluoroethylene, etc.). Suitable are those using an alkyl vinyl ether, those using an alkyl vinyl ether having a linear or branched alkyl group having a prime number of 2 to 8, and those using, for example, hydroxybutyl vinyl ether as a hydroxyalkyl vinyl ether. Copolymers using fluoroolefins and fluoroolefins having carboxylic acid ester groups as monomers (chloro as fluoroolefins) IJ fluoroethylene, copolymers using tetrafluoroethylene, CF2 as fluoroolefins having carboxylic acid ester groups = CI”0(C
F, )3COOCIH3,CF,=UF(J(CF2
) C00CH,,CF2=C:FOCF,UFO(C
F, ), -COOCH.

C.F.

etc.) can be used.

Among them, fluoroolefins and cyclohexyl vinyl ethers that can form a crushed film in the presence of a crosslinking agent (for example, compounds having two or more active groups such as butylated melamine, methylated melamine, incyanate, and glyoxal are suitable) , a copolymer containing an alkyl vinyl ether and a hydroxyalkyl vinyl ether as monomer components is one of the preferred fluororesins.

Furthermore, other monomers such as glycidyl vinyl ether, ethylene, propylene, inbunalene, vinyl chloride, vinylidene chloride, ethyl vinyl ether, isobuty/l/vinyl ether, n-butyl vinyl ether, etc. may be added to the above-mentioned fluorine fiber tree 11. I can do it.

The fluorine fiber used in the present invention can generally contain fluoroolefin in a proportion of 40 to 60 mol%, and can contain other monomer components in a proportion of 40 to 60 mol%.

This seven-stranded persimmon IJ'o, which can form membrane rupture, contains disuccinic acid peroxide, diglutaric acid peroxide,
Obtained by copolymerizing the above-mentioned monomer components in the presence of a polymerization initiator such as monosuccinic peroxide, azobisisobutyramidine dibasic N&, t-butyloxyinbutyrate, and t-butyloxyacetate. Can be done. The reaction solvent used in this polymerization includes:
Examples include t-butanol, esters, monofluorinated hydrocarbons, and the like. In addition, this fluororesin contains aromatic hydrocarbons such as xylene and toluene, alcohols such as n-butanol, esters such as butyl acetate,
Soluble in organic solvents such as ketones such as methyl isobutyl ketone and glycol ethers such as ethyl cellosolve.
You can make J Te.

A commercially available fluororesin that can form ruptured membranes of this Yuzu.
'rl-Lumiflon' (manufactured by Asahi Glass (1'l:l)) can be used.

The image carrier of the present invention is characterized in that the surface layer contains a fluororesin capable of forming a film as described in θiJ.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an image display device with high resolution and high reliability. Another object of the present invention is to provide a highly stable and commercially durable image carrier for use in devices that create and display toner images on display surfaces.

The characteristics and effects of the image carrier of the present invention will be described in detail below. As an example of an image display device using a toner image,
FIG. 1 shows a method in which a photoconductive layer is used as an image carrier.

FIG. 1 is a vertical sectional side view showing the schematic structure of an example of an image display device of the above type. 1 is a vertical device exterior box; 2 is a display image viewing window formed with a large opening on the front surface of the exterior box; generally a transparent plate 3 such as a glass plate is attached thereto;

Reference numeral 4 denotes an endless belt-type photoreceptor image carrier stretched between a driving pulley (or roller) 5 and a driven pulley (same) 6, which are horizontally installed in the upper and lower parts of the outer box. (abbreviated). For example, as shown in the second figure, the belt is made of a strong base sheet material 41 that is transparent and has high tensile properties, such as a synthetic resin sheet or film, and a metal or metal oxide (
The transparent conductive layer 42 is formed by thinly heat-bonding indium oxide, tin oxide, chromium oxide), and the transparent conductive base layer 43 is made of cadmium sulfide, tin oxide, chromium oxide, etc. , amorphous silicon, inorganic photoconductive substances such as selenium, azulene dyes, pyrylium dyes, thiopyrylium thread dyes, cyanine dyes, phthalocyanine pigments, anthanthrone pigments, dibenzpyrenequinone pigments, pyranthrone pigments, trisazo tooth pigments, Disazo pigment, azo pigment, indigo dye, quinacridone additive, asymmetric quinocyanine, quinocyanine pigment, poly-N-
Vinyl carbazole, polyvinylanthracene.

The optical isoelectric layer 44 containing an organic photoconductive substance such as polyvinylpyrene is laminated by a coating method, a bonding method, etc., and the outer circumferential direction of the belt 4 is the surface of the photoisoelectric layer.

The belt 4 is driven to rotate in the direction of the arrow by the rotation of the drive pulley 5, and the tension side outer surface of the L1 belt 4 moves past the display image viewing section 2 from bottom to top.

10 is the tension side belt part of the rotation belt mentioned above and the possibility of loosening 1
This is a light beam scanning type optical image exposure device disposed in the space between the J belt portions, and consists of a semiconductor laser (or gas laser), a polygon mirror, an fθ lens, etc. Then, a time-series electric digital pixel signal S is inputted from an image display device, electronic computer, etc. (not shown in the figure), and the signal is
A modulated laser beam L is oscillated in the direction of the driven pulley 6. The oscillated beam is deflected by a mirror 11 midway toward the back surface portion A of the driven pulley 6 of the tension side belt, and scans and exposes the belt back surface portion A in the belt width direction through the slit plate 12 12a. . The scanning of the laser beam L in the belt width direction is used as a main scanning, and the movement of the L1 belt 4 is used as a width scanning, and the back surface of the belt 4 is sequentially exposed to light images.

13 is a developing device disposed at a position on the front side of the belt corresponding to the back side part A of the belt that receives the laser beam scanning exposure;
Reference numeral 4 denotes a lamp for irradiating the entire surface with light, which is disposed on the back side of the tension side belt at the downstream side of the exposure section A in the direction of belt movement.

The illustrated developing device 13 includes a developer storage box 15 and the box 1.
A rotary developing sleeve 16 made of a non-magnetic material such as stainless steel or aluminum with the left side half circumferential surface exposed to the outside from inside the box, and a magnet row inserted and built into the sleeve 16 :) 17 , a blade 18 for applying a 3'Jt FJ agent to the outer surface of the sleeve, and a developer (conductive ω toner) T housed in a box 15. The conductive magnetic toner T in the box 15 is attracted to the toner in the vicinity of the rotating developing sleeve 16 by the magnetic field of the magnet roller 17 inside the sleeve, and is held on the outer peripheral surface of the sleeve as a magnetic absorbing layer and rotates together with the sleeve. On the way, the layer thickness is regulated and layered by the blade 18, and the toner layering surface comes into contact with and passes through the belt surface portion corresponding to the belt backside light image exposure portion A by rotation of the sleeve.

A DC bias is applied between the conductive layer 42 on the side of the belt 4 and the developing sleeve 16, and E is the power supply.

When the image is displayed on the facing side, when light image exposure is started on the exposure area A on the back side filil of the belt 4 while the belt 4 and the current maintenance @ 13 are being driven, the image is developed on the front side of the υ belt according to the principle described later. The conductive toner on the sleeve 16 is selectively deposited to form a toner bag corresponding to the exposed image. The belt surface on which the toner image has been formed is rotated to a position within the range of the image viewing window 2 and once stopped. As a result, an image is displayed on the second window. After a predetermined period of time has elapsed, or by operating the belt re-rotation button, the belt 4 is rotated again and the next display image is moved to the window 2, and the belt is temporarily stopped and the image is displayed. By this I# return, the l1l (λ-order display) of multiple images is performed.

After the image display ends, the belt rotates and the developing device 1 is turned on again.
The displayed toner images on the belt surface WI that have reached the third position are removed from the belt surface by the developing and cleaning action of the developing device and are collected on the developing tray side. The belt surface from which the toner image has been removed continues to have exposed areas AK'! Toner images corresponding to the light image exposure patterns shown in FIG. 3 are sequentially formed, and the toner images are transferred to the display window 2 as the belt 4 rotates.

The entire surface light irradiation lamp 14 passes through the light image exposure area A and irradiates the back side of the belt, on which the toner image is formed on the front side, with light uniformly in the width direction, thereby exposing the inside of the pre-conductor 44 of the belt 4. This arrangement was made so that each part could be integrated into 11 atmospheres.

The formation of the toner image on the belt surface is non-electrostatic and occurs simultaneously with the exposure of the photoimage, and the principle thereof will be explained with reference to FIGS. 3 and 4. For convenience of explanation, here,
The photoconductor layer 44 of the belt 4 is of N type, and the conductive layer 42 is
It is assumed that a negative bias is applied to , and a positive bias is applied to the developing sleeve 16 .

At the light image exposure area A on the back side of the belt, a bright area (A(U)
, FIG. 3) passes through the transparent substrate layer 43 and enters the photoconductor layer 44. In the portion of the photoconductor layer 44 where the light is incident, electron-stopping pairs are generated, and the electrons e are attracted by the negative bias of the belt mechanism layer and the positive bias of the image sleeve, leading to the light guide 7+f.
, moves toward the surface side of the body 1 so 44. Along with this,
A positive charge is induced in the conductive toner in the surface layer part of the toner on the side of the developing sleeve 16 that comes into contact with the belt surface part corresponding to the photoimage exposure part A of the belt screen (the belt surface part corresponding to the season), and is opposite to the transferred electron e. The positive charge induced toner adheres (Ta) from the developing sleeve 16 side to the belt surface side due to the Coulomb force between the electron e and the positive charge induced toner.

The positive charge of the attached toner (T"a) is then neutralized with the electrons e on the surface of the photoconductor layer 44 and erased.
perish.

On the other hand, in the exposed dark area (A, FIG. 4), the conductive layer 4 of the belt 4
Due to the bias between the conductive layer 42 and the developing sleeve 16 and the capacitance between the conductive layer 42 and the conductive toner layer on the developing sleeve 16 side, positive and negative charges are induced in the conductive layer portion and the surface toner of the conductive toner layer, respectively. However, the Coulomb force acting between them is weak, so that almost no toner adheres to the surface of the belt 4.

Therefore, toner is selectively attached to the light guide 1 of the belt 4 only on the surface portion of the photoconductor layer corresponding to the bright area of the photoimage exposure simultaneously with the photoimage exposure without charging the body layer 44inj (T'
a) A toner image is formed in the following manner.

Furthermore, the toner image that has been rotated to the developing device 13 after being displayed is easily removed from the belt surface by being rubbed by the layer of toner held on the side of the developing sleeve 16, and is absorbed into the layer of toner held on the sleeve. The toner is then collected and used again for forming toner images.

As mentioned above, the display image is formed as a toner image on the surface of an image carrier using a light guide and is displayed as a +S image. Good ~ There is no flickering in static images, and there is little angle dependence like a liquid crystal display, making it easy to see images and reducing fatigue.
For those requiring 1i images, the toner image formed on the belt surface is transferred to the copying paper surface.N. As described above, a toner image forming system that uses a non-charging, simultaneous exposure method and also functions for both development and cleaning has an extremely simple device configuration and is highly practical.

In addition to the above-mentioned laser beam scanning system, the optical image exposure device 10 may also include an LED array device, a liquid crystal, a PLZ1', a shutter array that selectively passes white light, etc. Also available. Alternatively, an exposure device using X-rays may be used. In this case, the base layer 43 of the belt 40 does not have to be transparent to visible light as long as it is transparent to X-rays. Further, the image carrier used in the present invention has a surface layer (not shown) on the photoconductor layer 44 described above, and a surface layer (not shown) on the photoconductor layer 44.
It can be formed by sequentially laminating an intermediate layer)'a (not shown) and a surface layer on top of the layer.

The intermediate layer can be formed from a fluorine resin or polyamide, polyvinyl alcohol, casein, ionomer resin, ethylene-acrylic enzyme copolymer, or the like as described in RJIJ used in the present invention. It is also possible to contain titanium oxide, zinc oxide, etc. On the other hand, the surface layer is a photoconductor layer 44 using a coating liquid containing a white pigment such as titanium oxide, zinc oxide, or tin oxide or a suitable dye and a fluorine resin capable of forming the above-mentioned coating. It can be formed by coating on the intermediate layer.

The binder tree IJσ of the surface layer is the above-mentioned fluororesin alone, or the above-mentioned fluororesin and polymethyl methacrylate resin, polystyrene resin, phenol resin, polyamide resin, alkyd-modified silicone resin, acrylic-modified silicone resin, polyester resin, polyester resin, etc. It can be mixed with other resins such as arylate resins, polycarbonate resins, and polyvinyl butyral resins.

In addition, when the photoconductor layer 44 becomes the surface layer of the image carrier, by coating a liquid obtained by mixing and dispersing the photoconductive substance and the fluorine fiber tree flff capable of forming a film. It can also be formed.

The above-described display device is an example in which a photoconductive layer is used as an image carrier, but in addition to using light, an electrostatic wandering image can be created on the Chongbo body layer using a bottle electrode as a 1H manual method. A method of forming a toner image, or a method of manually applying a current signal to an easily magnetizable stylus using magnetic toner to form a magnetic toner image can be similarly applied. Therefore, the present invention is not limited to the examples shown below. (Example 1) A light guide and an image carrying belt (see FIG. 2) were manufactured by the following steps.

The image carrying belt in this embodiment has a three-layer structure, that is,
Photoconductor layer on transparent conductive base film.

It is formed by coating an intermediate layer and a surface m1 layer. The transparent conductive base film used was CELEC-NEC, a trade name manufactured by Daicel Kagaku ffi Gtlh. Also, photoconductor layer coating liquid.

The intermediate layer coating solution and the surface layer coating solution were obtained by performing the following Routing procedure.

1) Coating solution for photoconductor layer is doped with Cu and In to form a semiconductor laser (820 nm
) CdS powder with sensitivity to 10% and average molecular weight 10
A dispersion of 7 parts by weight of polybutyl methacrylate having ρ00 in methyl ethyl ketone was mixed in a roll mill to obtain a coating liquid.

2) Intermediate layer coating liquid Tie, 37.5 parts by weight of pigment, 150 parts by weight of ethylene-acrylic acid copolymer aqueous solution (Steel Chemical Industry Co., Ltd.: trade name Zaixen-A, solid content concentration 79 25 wt%) and 3 parts by weight of water.
The mixture was placed in a porcelain ball mill with 6 parts by weight of ethanol and 27 parts by weight of ethanol, and dispersed for 40 hours to obtain an intermediate layer coating solution.

3) Surface layer coating liquid Tie, pigment 30 heavy tail, fluorine resin "Lumiflon I"
, F-200J (non-volatile content concentration 50% by weight.

Mix 20 parts by weight of Asahi Glass (porcelain) in xylene and disperse the solution with a solid fraction of 30% by weight in a porcelain ball mill for 40 hours.
(Asahi fiflf tA2JH) 4 parts by weight were mixed into a dispersion liquid to prepare a surface JXi coating liquid.

'1'i02 pigment is Il! It was added to increase the whiteness of the Il image display surface and to adjust the electrical resistance of the intermediate layer 9 [fIi layer].

The thus prepared mouse solution was applied onto a conductive base film of Pl:j, first with a dry film thickness of 60 microns for the conductor layer, then with a dry film thickness of 2 microns for the intermediate layer.
An image bearing belt was obtained by sequentially applying a surface layer using a roll coater to a dry film thickness of 15 microns.

The belt was suspended and driven on an image display device shown in FIG. 81 to repeatedly display images. The toner used at this time was polymethyl methacrylate resin (40 overlapping parts and magnet tie).
60 parts by weight of conductive carbon powder was melted, kneaded, pulverized, and coated with conductive carbon fine powder on the surface in a hot air stream. It is a 4-magnetic toner. Contamination on the surface of the image carrier due to this repeated image display was measured using a reflection densitometer Macbeth RD-514. The initial base density of the image carrier was 0.16, and the base density after repeated display 10,000 times remained unchanged at 0.16.

With this image carrier, clear images with less base staining were obtained for edge-curved display.

(Comparative Examples 1 and 2) The fluororesin in the surface layer used when creating the image bearing belt of Example 1 was [Le Mituron LF-200].
A comparative photoreceptor (comparative sample 161) was prepared in exactly the same manner as in Example 1, except that an acrylic resin [Delvet LP-IJ (manufactured by Non-Chemical Co., Ltd.)] was used instead of J. Furthermore, a comparative photoreceptor (comparative sample A2) was prepared in the same manner except that when the comparative sample jlfx 1 was prepared, bolifluoroethylene powder was dispersed in the wTh acrylic resin.
I did M.

These comparative samples AI and A2 were subjected to repeated image display in the same manner as in Example 1, and stains on the surface of the image carrier were measured using a reflection thermometer. Regarding comparative sample A1, the initial base concentration was 0.14, and the base concentration after repeated display 10,000 times was 0.14.
It was 36. - Comparative sample A2 has an initial base concentration of 0.
．． The base concentration after displaying 15,000 times is 0.30.
Met. In all of these comparative samples Al eA2, dirt was observed on the base and the surface was rough due to scratches, which was not desirable.

(Example 2) T-butanol 1169 and cyclohexylhinyl ether (C-Hyv
E) 11.7 g, ethyl vinyl ether (EVE) IL
19. Hydroxybutyl vinyl ether (HBVE)
), 069 g of potassium carbonate, and 0.069 g of azobisisobutyronitrile (Al13N), and dissolved air was removed by assimilation and degassing with liquid nitrogen. Thereafter, tetrafluoroethylene 369 was introduced into the autoclave and the temperature was gradually raised. When the temperature inside the autoclave reaches 65°C, the pressure increases to 4.5 K.
It shows 97cd. Thereafter, the reaction was continued with stirring for 7.2 hours, and when the pressure decreased to 2.2/9/cIi, the autoclave was cooled with water to stop the reaction. After reaching room temperature, the Verzim 1 autoclave was opened to remove unreacted monomers.

The resulting polymer solution was poured into water, the precipitated portion of the polymer was mixed in xylene, and the solution with a solid content ratio of 30% by weight was dispersed in a porcelain ball mill for 40 hours. 4 parts by weight were mixed into the dispersion liquid to prepare a coating liquid for one surface layer.

This coating solution was applied to the Nishimei conductive veil film coated with the photoconductor layer and intermediate layer used in Example 1 so that the dry film thickness was 15 mm.
An image bearing belt was obtained by coating with a roll coater so as to have a micron thickness.

This image carrier belt was subjected to repeated image display in the same manner as in Example 1, and stains on the surface of the image carrier were measured using a reflection densitometer. The initial base density of the image carrier was 0.15, and the base density after repeated display 10,000 times was 0.16. With this image carrier, clear images with less base staining could be obtained even after repeated display.

(Example 3) Cry
A magnetic tape provided with a magnetic film was prepared by coating 1 m of the surface shown in Example 1 to a dry film thickness of 10 microns.

Using this belt, the image forming process was constructed in the same manner as the apparatus shown in FIG. A magnetic head was installed in front of the developing station A in place of the IRI L laser scanner, and a bar code pattern signal was input to create a magnetization latent. In addition, in the developing machine shown in FIG. 2, the fixed magnet roll housed within the rotating sleeve 16 is one that does not magnetize the developing area.

This is for the purpose of not disturbing the magnetic latent image.

The toner cartridge produced with this apparatus had a contrast sufficient to be readable with an OCN head.

Further, the erasing process was carried out by thermally quenching the back of the image carrying belt. In this configuration, the image carrying belt always provided a stable uctt reading number W even when images were repeatedly formed.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an example of a display device; Fig. 2 is an enlarged cross-sectional view of the developing unit; Figure 2 and Figure 4 are schematic diagrams showing image formation in the exposed dark area. Special 51 applicant Canon Co., Ltd.

Claims (2)

[Claims] (1) An image display device that incorporates an image carrier that uses a green screen, and that displays one image by forming a toner retainer corresponding to signal information on the surface of the image carrier. The image display device IL is characterized in that the toner image forming surface layer of the image tlU holding member is made of a fluorine-based tree 11'rt which can be coated to form a coating. (2) The fluorine thread ti1. (3) The fluororesin is a resin that can be cured in the presence of a crosslinking agent. ! l image display device.