CN109154788A - Image forming apparatus - Google Patents
Image forming apparatus Download PDFInfo
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- CN109154788A CN109154788A CN201680086096.5A CN201680086096A CN109154788A CN 109154788 A CN109154788 A CN 109154788A CN 201680086096 A CN201680086096 A CN 201680086096A CN 109154788 A CN109154788 A CN 109154788A
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- intermediate transfer
- transfer
- forming apparatus
- image forming
- image
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
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- General Physics & Mathematics (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
The present invention provides a kind of intermediate transfer medium not image forming apparatus of easy damaged and deterioration and the long lifetime that can be realized intermediate transfer medium.Image forming apparatus (1) includes the transfer member that will be carried on the toner image of image-carrier (7Y, 7M, 7C, 7Bk) and transfer to transfer object (33) in structure.Transfer member is configured to include intermediate transfer belt (12), it can be rotated while being in contact with the surface of image-carrier (7Y, 7M, 7C, 7Bk), by from image-carrier (7Y, 7M, 7C, 7Bk) primary transfer toner image；And intermediate transfer rollers (20), it can be rotated while being in contact with the surface of intermediate transfer belt (12), be needed on transfer object (33) three times from intermediate transfer belt (12) secondary transfer printing toner image and by toner image.
Description
Technical field
The present invention relates to a kind of image forming apparatuses for transferring toner to various transfer objects.
Background technique
In the past, the technology as the image forming apparatus to the ceramics transfer toner image such as ware, glass, for example, it is public
Knowing has technology disclosed in patent document 1.
As shown in Fig. 2 of patent document 1, image forming apparatus disclosed in Patent Document 1 is configured to include OPC light guide
Electric drum 5 (image-carrier), with optical conductive layer；The first-class exposure components 6 (exposure component) of LED, expose optical conductive layer
Light simultaneously forms electrostatic latent image；Developing cell 8a (developing parts) is used to that toner to be made to be attached to the shape on OPC photoconductive drum 5
At electrostatic latent image, to form toner image；Transfer roll 7 (transfer member), to connect with the surface of OPC photoconductive drum 5
The mode of touching rotates, and is transferred (primary transfer) and is formed in the toner image of OPC photoconductive drum 5 and to 2 turns of product of ceramics
It prints (secondary transfer printing).
As the example of the image forming apparatus other than the technique disclosed in Patent Document 1, propose other than oriented ceramics
The transfer object transfer toner image such as paper image forming apparatus 100 as shown in Figure 7.
As shown in fig. 7, image forming apparatus 100 is the color image forming device of 4 grades of series connection intermediate transfer belt modes,
And it is configured to include image-forming block 101, primary transfer component 102, transfer unit 103, secondary transfer printing component 104 and fixing section
105。
Image-forming block 101 is configured to include: multiple images carrier 106；De-power unit part (not shown), will remain on each figure
The charge on the surface of image carrier 106 removes, and neutralizes to the surface of each image-carrier 106；Charging member 107 makes to be removed
The surface of each image-carrier 106 after electrical components neutralization is similarly charged；Exposure component 108, in the table of each image-carrier 106
Face forms electrostatic latent image；Developing parts 109 make toner be attached to the electrostatic latent image formed on each image-carrier 106, come
Form toner image；Cleaning member 110, be used for by using aftermentioned primary transfer component 102 carry out primary transfer it
Remain on the toner removal on the surface of each image-carrier 106 afterwards.
Primary transfer component 102 is configured to include: intermediate transfer belt 113, is transferred on what each image-carrier 106 developed
Toner image；Band driven roller 115, drives intermediate transfer belt 113, will transfer to the tune of intermediate transfer belt 113
Toner image is delivered to transfer object 114；Band idler roller 116 is carrying out intermediate transfer belt 113 to be biased against correction of advancing
Meanwhile it opens intermediate transfer belt 113 and setting；Primary transfer roller 117, be located at intermediate transfer belt 113 inside and be configured at respectively
The corresponding position of image-carrier 106, the toner image to develop in each image-carrier 106 is transferred to intermediate transfer belt 113；
Secondary transfer printing opposed roller 118；And dummy roll 119.
Intermediate transfer belt 113 is configured to, positioned at the lower part of each image-carrier 106 appropriate location and with each image-carrier
106 surface is in contact.Intermediate transfer belt 113 is formed by cricoid film of synthetic resin, by driven roller 115, idler roller
116, primary transfer roller 117, secondary transfer printing opposed roller 118 and dummy roll 119 open and are set.In addition, in intermediate transfer belt 113
Outside be configured with cleaning member 120, the cleaning member 120 will be for that will remain on centre after carrying out aftermentioned secondary transfer printing
The toner on the surface of transfer belt 113 removes.
Transfer unit 103 will transfer object 114 and convey towards aftermentioned fixing section 105, and be configured to conveying roller
121 and paper Route guiding plate 122.
Secondary transfer printing component 104 is for will transfer to the toner image of intermediate transfer belt 113 finally to transfer object
The component that object 114 transfers, secondary transfer roller are equivalent to the secondary transfer printing component.Secondary transfer roller is configured to, and is located at intermediate transfer
With 113 outside and across intermediate transfer belt 113 and secondary transfer printing opposed roller 118 it is opposite.
Fixing section 105 is the dress for being fixed to the transfer object 114 for carrying unfixed toner image
It sets.
Using above-mentioned image forming apparatus 100, by transfer unit 103 convey Lai transfer object 114 once turned
It is printed on the intermediate transfer belt 113 of toner image and is applied with the 104 (secondary transfer printing of secondary transfer printing component of defined voltage
Roller) it clamps, so as to which the toner image on intermediate transfer belt 113 is carried out secondary transfer printing to transfer object 114.
Existing technical literature
Patent document
Patent document 1: No. 3460084 bulletins of Japanese Patent Publication No.
Summary of the invention
Problems to be solved by the invention
However, in above-mentioned image forming apparatus 100, replaces with ceramics object 114 will be transferred and be intended to the ceramics
In the case where transferring toner image, there is a problem of as described below.
Ceramics are the harder and sharp keen materials in corner.There are the following problems: when will with intermediate transfer belt 113 in contact will
Surface transfer from toner image to such ceramics when, expensive intermediate transfer belt 113 be possible to by ceramics it is harder and sharp
The corner damage of benefit.
The present invention is to propose in view of the above circumstances, and project is to provide a kind of image forming apparatus, the image
Intermediate transfer medium not easy damaged and deterioration can be made by forming device, can be realized the long lifetime of intermediate transfer medium.
The solution to the problem
It include: figure in structure for solving image forming apparatus of the invention described in the technical solution 1 of the above subject
Image carrier is used to carry toner image；And transfer member, it can will be carried on the toner of the image-carrier
Image is needed on transfer object, which is characterized in that, the transfer member is configured to include among first
Offset medium can be rotated while the surface with image carrier is in contact, and be transferred from the image-carrier
The toner image；And second intermediate transfer medium, it can connect with the surface of first intermediate transfer medium
It is rotated while touching, transferred the toner image from first intermediate transfer medium and is transferred the toner image
In the transfer object.
In the image forming apparatus described in technical solution 1, image forming apparatus of the invention described in technical solution 2
It is characterized in that, the transfer object is ceramics.
In image forming apparatus described in technical solution 1 or 2, image of the invention described in technical solution 3 forms dress
It sets and is characterized in that, first intermediate transfer medium is created as cricoid intermediate transfer belt, and the intermediate transfer belt is by gathering
Acid imide is formed.
In image forming apparatus described in any one of technical solution 1~3, figure of the invention described in technical solution 4
It being characterized in that as forming device, volume resistivity when being applied with 10V voltage of first intermediate transfer medium is 1 ×
108Ω cm or more and 1 × 1012Ω cm or less.
In image forming apparatus described in any one of technical solution 1~4, figure of the invention described in technical solution 5
It is characterized in that second intermediate transfer medium is intermediate transfer rollers as forming device, which has by foaming
Elastomer formed foaming elastomer layer and be configured at the foaming elastomer layer outside surface coating.
In the image forming apparatus described in technical solution 5, image forming apparatus of the invention described in technical solution 6
It is characterized in that, it is 1 × 10 that the surface coating, which has surface resistivity,9Ω/ or more insulating properties.
In image forming apparatus described in technical solution 5 or 6, image of the invention described in technical solution 7 forms dress
It sets and is characterized in that, the intermediate transfer rollers have intermediate solid between the foaming elastomer layer and the surface coating
Layer, the intermediate solid layer has the surface resistivity that surface resistivity is the foaming elastomer layer or more and the surface is covered
The surface resistivity of cap rock electric conductivity below.
In image forming apparatus described in any one of technical solution 1~7, figure of the invention described in technical solution 8
It is characterized in that there is multiple transfer members, multiple transfer member and the second intermediate transfer medium phase as forming device
It configures over the ground, the toner image of second intermediate transfer medium can be will transfer to and being applied defined voltage
It is needed on the transfer object, the resistance applied between the defined power supply of voltage and the surface of the transfer member is
1×107Ω or more and 1 × 109Ω or less.
In the image forming apparatus described in technical solution 8, image forming apparatus of the invention described in technical solution 9
It is characterized in that having caused by supplying the voltage as being applied to the transfer member along the face direction flowing of the transfer object
The device that electric current flows through.
In image forming apparatus described in technical solution 8 or 9, image of the invention described in technical solution 10 forms dress
It sets and is characterized in that, the voltage for being applied to the transfer member is the superimposed voltage of DC voltage and alternating voltage.
It is of the invention described in technical solution 11 in image forming apparatus described in any one of technical solution 1~10
Image forming apparatus is characterized in that, in second intermediate transfer from first intermediate transfer medium transferred with toner
The direction of rotation downstream side of medium has charging member, which can carry out the surface of second intermediate transfer medium
Except electricity or charge the surface of second intermediate transfer medium.
It is of the invention described in technical solution 12 in image forming apparatus described in any one of technical solution 1~11
Image forming apparatus is characterized in that, with the device realized except electricity or electrification, which can turn second centre
The surface of print medium is de-energized or charges the surface of second intermediate transfer medium.
In the image forming apparatus described in technical solution 12, image forming apparatus of the invention described in technical solution 13
It is characterized in that, it is described to realize except electricity or the device of electrification double as the surface that remain on second intermediate transfer medium
The cleaning member of toner removal.
The effect of invention
Using the present invention described in technical solution 1, toner image is transferred from image-carrier to the first intermediate transfer medium,
Toner image is transferred from the first intermediate transfer medium to the second intermediate transfer medium, then will transfer to the second intermediate transfer medium
Toner image be needed on transfer object, therefore, the damage as caused by transfer object and deteriorate only by among second
Offset medium undertakes.Therefore, the first intermediate transfer medium not will receive the damage as caused by transfer object and deteriorate.Cause
This, intermediate transfer medium not easy damaged and deterioration, having can be realized effect as the long lifetime of intermediate transfer medium.
Using the present invention described in technical solution 2, since transfer object is ceramics, by with harder and sharp keen
Corner ceramics caused by damage and deterioration only undertaken by the second intermediate transfer medium.Therefore, the first intermediate transfer medium
It not will receive the damage as caused by ceramics and deteriorate.Therefore, intermediate transfer medium not easy damaged and deterioration, having can be real
Effect as the long lifetime of existing intermediate transfer medium.
Using the present invention described in technical solution 3, also have on the basis of having the effect of technical solution 1 or 2 as follows
Such effect.
That is, the first intermediate transfer medium is the intermediate transfer belt formed by polyimides, therefore, in formed of rubber
Between transfer belt compare, can be improved print position precision.Therefore, the well such effect of transfer printing precision can be made by having.
Using the present invention described in technical solution 4, on the basis of having the effect of any one of technical solution 1~3 also
With effect as following.
That is, using the present invention, by setting volume resistivity when being applied with 10V voltage of the first intermediate transfer medium
It is 1 × 108Ω cm or more and 1 × 1012Ω cm is hereinafter, so as to prevent the occurrence of following, that is, due in volume resistance
Rate is less than 1 × 108The increase to the electric current of other device leakages that is generated when Ω cm and cause to transfer toner from image-carrier
The transfer efficiency of image declines.In addition, being able to suppress in volume resistivity is more than 1 × 1012The transfer gap generated when Ω cm
Part gap discharge, the variation of transfer electric field can be prevented.Also, it by the generation for inhibiting gap discharge, can prevent
Striped, the disorder of dot pattern etc. are generated in toner image.Therefore, the well such effect of transfer efficiency can be made by having.
Using the present invention described in technical solution 5, on the basis of having the effect of any one of technical solution 1~4 also
With effect as following.
That is, can make the second intermediate transfer medium that there is elasticity using the present invention.Even if the second intermediate transfer is situated between as a result,
Matter is in contact with the ceramics transfer object with harder and sharp keen corner in this way, can also mitigate the second intermediate transfer medium
Suffered damage.Therefore, having makes effect as the further long lifetime of intermediate transfer medium.
In addition, using the present invention, as described above, can make the second intermediate transfer medium that there is elasticity, therefore, even for
Surface warp (bumps) caused by thermal contraction is serious ceramic or has the ceramics or cross sectional shape of sagging in end
Object is transferred for trapezoidal ceramics are such, is also able to maintain good tracing ability (adaptation).Therefore, having can make to turn
Print the more good such effect of efficiency.
Using the present invention described in technical solution 6, also have on the basis of having the effect of technical solution 5 following such
Effect.
Surface coating surface resistivity less than 1 × 109When Ω/, from the first intermediate transfer medium in second
Between offset medium transfer toner image when the bias (secondary transfer printing bias) that applies and from the second intermediate transfer medium to transfer
Object transfers the bias (transfer bias three times) applied when toner image and can interfere, and can not accurately be biased,
Its result can not be transferred accurately.On the other hand, as described herein, by being set as the surface resistivity of surface coating
1×109Ω/ or more, so that secondary transfer printing bias and transfer bias does not interfere three times, can apply accurate bias,
It can accurately transfer.Therefore, the more good such effect of the transfer efficiency of intermediate transfer medium can be made by having.
In addition, using the present invention, by the way that the surface resistivity of surface coating is set as 1 × 109Ω/ or more has
How the resistance for no matter transferring object can be realized the effect as the transfer under the bias condition being roughly the same.
Also, using the present invention, also there is effect as following on the basis of having the effect of above-mentioned.
There are ionic conduction type and electron-conductives for the transfer roll formed by foaming elastomer, but due to charge shifting principle
Difference, and make ionic conduction type transfer roll have superiority.But using the present invention, by being 1 with surface resistivity
×109Ω/ or more surface coating is also able to suppress superfluous electric current even if applying high voltage, has and is also able to use
Effect as the transfer roll of above-mentioned electron-conductive.
Using the present invention described in technical solution 7, also have on the basis of having the effect of technical solution 5 or 6 as follows
Such effect.
Not having surface resistivity between the foaming elastomer layer and surface coating of intermediate transfer rollers is foaming elasticity
More than the surface resistivity of body layer and in the case where the surface resistivity of surface coating intermediate solid layer below, it may occur that because
Foaming in foaming elastomer layer and the paradoxical discharge in the gap (foamed cell) that generates.Thus, it may occur that local is dotted
Leakage transfer etc..On the other hand, as described herein, by intermediate transfer rollers foaming elastomer layer and surface coating it
Between with surface resistivity be foaming elastomer layer surface resistivity more than and surface coating surface resistivity it is below
Intermediate solid layer is able to suppress the generation of the paradoxical discharge in the foamed cell of foaming elastomer layer.Thereby, it is possible to prevent part
Dotted leakage transfer etc. generation.Therefore, the more good such effect of transfer efficiency can be made by having.
Using the present invention described in technical solution 8, on the basis of having the effect of any one of technical solution 1~7 also
Have the effect of as described below.
Resistance between transfer voltage power supply and the surface of transfer member is less than 1 × 107In the case where Ω, when resistance pole
When low transfer object is close to transfer member, fire not only occurs in the short space between transfer object and transfer member
Flower electric discharge, and become excessively, to will lead to supply voltage decline to the electric current that other devices leak.In addition, super in above-mentioned resistance
Cross 1 × 109In the case where Ω, the efficiency transferred to transfer object deteriorates.On the other hand, as described herein, pass through by
Resistance between transfer voltage power supply and the surface of transfer member is set as 1 × 107Ω or more and 1 × 109Ω is hereinafter, be able to suppress
Transfer the generation of the spark discharge between object and transfer member.In addition, can prevent the electric current leaked to other devices from becoming
Excessively and the case where cause supply voltage to decline.Therefore, the more good such effect of transfer efficiency can be made by having.
Using the present invention described in technical solution 9, also have as follows on the basis of having the effect of technical solution 8
Effect.
In the electricity for not having the face direction flowing for the edge transfer object generated by the voltage for being applied to transfer member
In the case where the device that stream flows through, when transfer object that will be unstable and extremely low to resistance transfers toner image, for
The transfer efficiency for transferring object is deteriorated.On the other hand, as described herein, due to having for because being applied to transfer member
Voltage and the device that flows through of electric current of the face direction flowing of edge transfer object generated, therefore transfer the face direction of object
Electric current is flowed via the device.Therefore, even if being transferred for the unstable and extremely low transfer object of resistance, it may have energy
Enough make the well such effect of transfer efficiency.
Using the present invention described in technical solution 10, also have on the basis of having the effect of technical solution 8 or 9 as follows
Such effect.
In the case where transferring object is non-sintered ceramic, under microscopic observation, ceramic surface, which becomes, has silicic acid
The state that the position of the powdered glaze of zirconium etc. and short space is formed with by glaze and glaze position with clipping are mixed in.?
It is intended in the case where transferring toner image from the second intermediate transfer medium to transfer object as described above, in transfer object
Surface can be mixed with the part that the second intermediate transfer medium directly contacts and the part being not directly contacted with.In this case, if
Transfer and apply DC voltage, then the second intermediate transfer medium with short space is formed with clipping by glaze and glaze
Transfer efficiency can be deteriorated at position.On the other hand, as described herein, by being superimposed apply DC voltage and alternating current
Pressure, offsets the physical adhesion forces other than Coulomb force (as representative power Van der Waals force).Even as a result, in second
Between offset medium and transfer object is formationed have at the position of short space, also can swimmingly carry out based on Coulomb force realization
Toner movement.Therefore, using the present invention, compared with when applying DC voltage, have can make transfer efficiency it is good this
The effect of sample.
Using the present invention described in technical solution 11, on the basis of having the effect of any one of technical solution 1~10
Also have the effect of as described below.
That is, the second intermediate transfer is de-energized or made by the surface to the second intermediate transfer medium using the present invention
The surface of medium is charged, and therefore, is able to suppress removing electric discharge, locally in transfer gap generation gap discharge, can be prevented
The image disorder of striped, bleeding etc. is generated in toner image.Therefore, the well such effect of transfer efficiency can be made by having.
Using the present invention described in technical solution 12, on the basis of having the effect of any one of technical solution 1~11
Also there is effect as following.
That is, using the present invention, by being de-energized or making the to the surface of the second intermediate transfer medium using device
The surface of two intermediate transfer mediums is charged, and transfer ghost image, non-uniform generation can be prevented.Therefore, having can be such that transfer imitates
The well such effect of rate.
Using the present invention described in technical solution 13, also have on the basis of having the effect of technical solution 12 it is following that
The effect of sample.
That is, using the present invention, the surface of the second intermediate transfer medium can be de-energized using device or make the
The surface of two intermediate transfer mediums is charged, and will remain on the toner removal on the surface of the second intermediate transfer medium.Therefore,
With the surface that can be carried out efficiently the second intermediate transfer medium except electricity or electrification and by the second intermediate transfer medium
The remaining toner on surface remove such effect.
Detailed description of the invention
Fig. 1 is the figure for the outline structure for illustrating the embodiment of image forming apparatus of the invention.
Fig. 2 is for the secondary transfer printing component in the explanatory diagram 1 and three times figure of the outline structure of transfer member.
Fig. 3 is the sectional view of the second intermediate transfer medium.
Fig. 4 is the figure of comparative example 1.
Fig. 5 is the figure of comparative example 2.
Fig. 6 is the figure for the outline structure for illustrating the variation of image forming apparatus of the invention.
Fig. 7 is the figure for illustrating the outline structure of previous image forming apparatus.
Specific embodiment
In the following, referring to Fig.1~Fig. 5 illustrates the embodiment of image forming apparatus of the invention, illustrate this hair referring to Fig. 6
The variation of bright image forming apparatus.
In addition, the arrow in figure indicates front and back, upper and lower all directions (all directions of arrow are an example).
Embodiment
In the following, referring to Fig.1~Fig. 5 illustrates embodiment.
In Fig. 1, appended drawing reference 1 indicates image forming apparatus of the invention.
In the present embodiment, image forming apparatus 1 is the device to the ceramics transfer toner image such as ware, glass
(it is an example.In addition to this, it also can be set to and transfer toner image to such as paper using image forming apparatus 1).
Image forming apparatus 1 is the color image forming device of 4 grades of series connection intermediate transfer belt modes, is configured to include into
As component 2, primary transfer component 3, secondary transfer printing component 4, transfer unit 5 and three times transfer member 6.
In the following, each structure to image forming apparatus 1 is illustrated.
Firstly, being illustrated to image-forming block 2.
As shown in Figure 1, image-forming block 2 is configured to include multiple images carrier 7Y, 7M, 7C, 7Bk, charging member 8, exposure
Component 9, developing parts 10, cleaning member 11 and de-power unit part (not shown).
Each image-carrier 7Y, 7M, 7C, 7Bk are can be with defined rotation speed (arrow shown in FIG. 1 in the counterclockwise direction
Head A indicated by direction) rotation so-called photosensitive drums, be formed as the surface of the matrix of the drum type of aluminium etc. have photoconductive
Layer.In addition, in the present embodiment, using the photosensitive of negative charging type OPC (Organic Photoconductor) as photoreceptor
Body.Negative charging type OPC is set as that dark space current potential VD is -500V and clear zone current potential VL is -20V.
De-power unit part, charging member 8, exposure is respectively configured in the appropriate location on the periphery of each image-carrier 7Y, 7M, 7C, 7Bk
Light component 9, developing parts 10 and cleaning member 11.
In the following, simply to de-power unit part, charging member 8, exposure component 9, developing parts 10 and cleaning member 11 into
Row explanation.
The charge that de-power unit part will remain on the surface of each image-carrier 7Y, 7M, 7C, 7Bk removes, to each image-carrier
The surface of 7Y, 7M, 7C, 7Bk are neutralized, specifically, erasing lamp is equivalent to the de-power unit part.
Charging member 8 charges the surface of each image-carrier 7Y, 7M, 7C, 7Bk after being neutralized by de-power unit part similarly,
Specifically, corona charging device is equivalent to the charging member.
Exposure component 9 forms electrostatic latent image on the surface of each image-carrier 7Y, 7M, 7C, 7Bk, specifically, LED is printed
Head is equivalent to the exposure component.
Developing parts 10 make toner be attached to the electrostatic latent image formed in each image-carrier 7Y, 7M, 7C, 7Bk, to be formed
Toner image, specifically, developing apparatus is equivalent to the developing parts 10.
Developing parts 10 are at least correspondingly set with yellow (Y), magenta (M), cyan (C), black (Bk) this 4 kinds of colors
In each image-carrier 7Y, 7M, 7C, 7Bk.
As shown in Figure 1, developing parts 10 be configured to include toner supply container 10a, shell 10b, agitating member 10c,
Supply roller 10d, developer roll 10e and layer thickness control component 10f.
Developing parts 10 supply toner from toner supply container 10a to shell 10b, and stirring is utilized in shell 10b
Component 10c is stirred the toner, and supplies toner to developer roll 10e using supply roller 10d.It supplies to developer roll
The toner of 10e controls thickness by thickness control member 10f, via developer roll 10c on image-carrier 7Y, 7M, 7C, 7Bk
Electrostatic latent image adheres to the toner of each color and develops as toner image.Being developed by for electrostatic latent image is non magnetic
One pack system contacts visualization way and carries out.By developing bias supply (not shown), apply developing bias to developer roll 10c.This reality
Applying the developing bias in example is Vdev-180V.
Cleaning member 11 is for will be transferred in the toner image for being formed in each image-carrier 7Y, 7M, 7C, 7Bk
Remain on the toner removal on the surface of each image-carrier 7Y, 7M, 7C, 7Bk after aftermentioned first intermediate transfer medium 12
Component, specifically, so-called bulging cleaner is equivalent to the cleaning member.
In the following, being illustrated to primary transfer component 3.
As shown in Figure 1, primary transfer component 3 is configured at the appropriate location of the downside of image-forming block 2, it is configured to include first
Intermediate transfer medium (intermediate transfer belt) 12, band driven roller 13, band idler roller 14, primary transfer roller 15, dummy roll 17 and clear
Clean component 18.
In the following, each structure to primary transfer component 3 is illustrated.
Along clockwise while first intermediate transfer medium 12 is in contact with the surface of each image-carrier 7Y, 7M, 7C, 7Bk
Direction (direction indicated by arrow B shown in FIG. 1) rotation, be transferred (primary transfer) be formed in each image-carrier 7Y, 7M,
The toner image of 7C, 7Bk.In the present embodiment, as shown in Figure 1, the first intermediate transfer medium 12 is created as in cricoid
Between transfer belt.In the following, in the present embodiment, " the first intermediate transfer medium 12 " is properly termed as " intermediate transfer belt 12 ".
Intermediate transfer belt 12 is formed by the polyimides as synthetic resin material and is formed as the film with a thickness of 90 μm
Shape.
Volume resistivity when intermediate transfer belt 12 is applied with 10V voltage is 1E+8 (1 × 108) Ω cm or more and 1E+
12(1×1012) Ω cm or less.In the present embodiment, volume resistivity when intermediate transfer belt 12 is applied with 10V voltage is 1E
+10(1×1010)Ωcm。
In the present embodiment, the first intermediate transfer medium 12 is set as intermediate transfer belt, but not limited thereto.Except this it
Outside, intermediate transfer rollers also can be used to replace intermediate transfer belt, to this omission to the explanation of specific structure and construction.
As shown in Figure 1, intermediate transfer belt 12 is by band driven roller 13, band idler roller 14, primary transfer roller 15 and idle running
Roller 17 open and is set.
In addition, as shown in Figure 1, being configured with cleaning member 18 in the outside of intermediate transfer belt 12, which is used for
The toner removal on the surface of intermediate transfer belt 12 will be remained on after having carried out aftermentioned secondary transfer printing.
As shown in Figure 1, being configured at the inside of intermediate transfer belt 12 with driven roller 13, driven by driving device (not shown),
It is the component that can make (direction indicated by the arrow B shown in FIG. 1) rotation along clockwise direction of intermediate transfer belt 12.It is primary
The toner image for being transferred to intermediate transfer belt 12 is transported to aftermentioned second intermediate transfer medium (centre by the rotation
Transfer roll) 20.
It is grounded with driven roller 13 by the rheostat of 1000V (not shown).
It as shown in Figure 1, being configured at the inside of intermediate transfer belt 12 with idler roller 14, is carried out partially to intermediate transfer belt 12
Intermediate transfer belt 12 is set to open the component set while correction by advancing.
It is grounded with idler roller 14 by the rheostat of 1000V (not shown).
As shown in Figure 1, primary transfer roller 15 be located at the inside of intermediate transfer belt 12 and be configured at each image-carrier 7Y,
The corresponding position 7M, 7C, 7Bk, the primary transfer roller 15 are the toners that will be formed in each image-carrier 7Y, 7M, 7C, 7Bk
Image primary transfer is in the component of intermediate transfer belt 12.
As shown in Figure 1, each primary transfer roller 15 is opposite with each image-carrier 7Y, 7M, 7C, 7Bk across intermediate transfer belt 12
Ground configuration.
In order to will be formed in the toner image primary transfer of each image-carrier 7Y, 7M, 7C, 7Bk in intermediate transfer belt 12,
And apply defined voltage from primary transfer voltage source (not shown) to each primary transfer roller 15.Primary turn in the present embodiment
Print voltage is followed successively by 350V, 400V, 450V and 500V from upstream side (left side in Fig. 1).
As shown in Figure 1, dummy roll 17 is configured at the outside of intermediate transfer belt 12, it is that intermediate transfer belt 12 is made to open the structure set
Part.
As shown in Figure 1, dummy roll 17 can follow carrying out using aftermentioned first lifting part 21 for secondary transfer printing component 4
Movement along the vertical direction, moved along the vertical direction by the second lifting part 22.By aftermentioned the two of dotted line diagram in Fig. 1
What secondary transfer member 4, intermediate transfer belt 12 and dummy roll 17 indicated is turned by the secondary transfer printing component 4 of solid line diagram, centre
Print band 12 and dummy roll 17 be moved upward after state.As described above, moved along the vertical direction by dummy roll 17, by
This is also able to maintain that the travel distance of intermediate transfer belt 12 even if secondary transfer printing component 4 moves along the vertical direction.
As shown in Figure 1, cleaning member 18 is configured at the outside of intermediate transfer belt 12, for that will incite somebody to action from intermediate transfer belt 12
Remain on the table of intermediate transfer belt 12 after toner image secondary transfer printing to the second intermediate transfer medium (intermediate transfer rollers) 20
The toner in face removes, specifically, so-called band cleaner is equivalent to the cleaning member.
In the following, being illustrated to secondary transfer printing component 4.
As shown in Figure 1 and Figure 2, secondary transfer printing component 4 is configured at the appropriate location of the downside of primary transfer component 3, and
It is configured to include the second intermediate transfer medium (intermediate transfer rollers) 20, secondary transfer roller 16, realization except electricity or the electrification of electrification
Component 23 is realized except electricity or the device 24 charged.
In the following, each structure to secondary transfer printing component 4 is illustrated.
Second intermediate transfer medium 20 be in contact with the surface of the first intermediate transfer medium (intermediate transfer belt) 12 it is same
When in the counterclockwise direction (direction indicated by arrow C shown in FIG. 1) rotate, be transferred (secondary transfer printing) and be formed in intermediate transfer
With 12 toner image.In the present embodiment, the second intermediate transfer medium 20 is by synthetic rubber synthetic resin material shape
At intermediate transfer rollers.In the following, in the present embodiment, " the second intermediate transfer medium 20 " is properly termed as " intermediate transfer rollers
20”。
As shown in FIG. 2 and 3, intermediate transfer rollers 20 are configured to mandrel 25, foaming elastomer layer 26, intermediate solid
Layer 27 and surface coating 28.In the present embodiment, the diameter of intermediate transfer rollers 20 is 60mm.In addition, the number of above-mentioned diameter
Value is an example, and but not limited thereto.
Mandrel 25 is the part at the center as intermediate transfer rollers 20, is grounded as shown in Figure 2.
As shown in FIG. 2 and 3, foaming elastomer layer 26 is configured at the outside of mandrel 25, is formed by foaming elastomer
Layer.In the present embodiment, the foaming elastomer for forming foaming elastomer layer 26 is blown rubber.
In the present embodiment, foaming elastomer layer 26 with a thickness of 10mm, be formed as making mandrel 25 and foaming elastomer layer
Resistance between 26 surfaces becomes 1E+6 (1 × 106)Ω.In addition, above-mentioned each numerical value is an example.
As shown in FIG. 2 and 3, intermediate solid layer 27 is configured at the outside of foaming elastomer layer 26, is by electric conductivity
The layer that synthetic rubber synthetic resin material is formed.In the present embodiment, the synthesis tree of the electric conductivity of intermediate solid layer 27 is formed
Rouge material is conductive perfluoroalkoxy resin (PFA).
In the present embodiment, intermediate solid layer 27 with a thickness of 30 μm, be formed as surface resistivity be foaming elastomer layer
Below surface resistivity more than 26 surface resistivity and for aftermentioned surface coating 28.In the present embodiment, be formed as
The surface resistivity of intermediate solid layer 27 is 1E+7 (1 × 107)Ω/□.In addition, above-mentioned each numerical value is an example.
As shown in FIG. 2 and 3, surface coating 28 is configured at the outside of intermediate solid layer 27, is the conjunction by insulating properties
The layer formed at rubbery synthetic resin material.In the present embodiment, the synthetic resin of the insulating properties of surface coating 28 is formed
Material is the PFA with insulating properties.
Surface coating 28 is formed as it with a thickness of 25 μm or more and 100 μm or less.In the present embodiment, be formed as surface
Coating 28 with a thickness of 50 μm.
It is 1E+9 (1 × 10 that surface coating 28, which is formed as surface resistivity,9) Ω/ or more.
The surface resistivity of the surface coating 28 is preferably 1E+11 (1 × 1011) Ω/ or more.Also, it is further excellent
It is selected as, the surface resistivity of surface coating 28 is as far as possible close to infinitely great as insulator.
As shown in Figure 1 and Figure 2, secondary transfer roller 16 is located at the inside of intermediate transfer belt 12 and is configured at and intermediate transfer
The corresponding position of roller 20 is the toner image secondary transfer printing by primary transfer to intermediate transfer belt 12 in intermediate transfer rollers 20
Component.
As shown in Figure 1 and Figure 2, secondary transfer roller 16 is opposite across intermediate transfer belt 12 and the second intermediate transfer medium 20
Ground configuration.
In order to by the toner image secondary transfer printing of primary transfer to intermediate transfer belt 12 in the second intermediate transfer medium (in
Between transfer roll) 20, as shown in Fig. 2, applying defined voltage from secondary transfer printing voltage source 19 to secondary transfer roller 16.This implementation
Secondary transfer printing voltage in example is set as DC voltage -2.5kV.
As shown in Figure 1 and Figure 2, it realizes that the charging member 23 except electricity or electrification is configured at from intermediate transfer belt 12 to transfer
Have the downstream side of the direction of rotation (direction indicated by arrow C shown in FIG. 1) of the intermediate transfer rollers 20 of toner, it is specific and
Speech, the charged device for being de-energized to the surface of intermediate transfer rollers 20 or charging the surface of intermediate transfer rollers 20 are equivalent to the band
Electrical components.
As shown in Fig. 2, realizing except electricity or the charging member 23 of electrification are by by AC power source 29, ground resistance 30, Zener
The voltage source that diode 31 is constituted applies the superimposed voltage of defined DC voltage and alternating voltage.In the present embodiment, directly
It is 500Hz that galvanic electricity pressure and the superimposed voltage of alternating voltage, which are set as frequency, and positive peak value is+1.0kV, and negative peak value is -5.0kV,
Average value is -2.0kV.
Realize that the device 24 except electricity or electrification is that intermediate transfer is de-energized or made to the surface of intermediate transfer rollers 20
The device of the surface electrification of roller 20, specifically, as shown in Figure 1 and Figure 2, being set as that the surface of intermediate transfer rollers 20 will be remained on
Toner removal cleaning member.More specifically, Clean- brush roll is equivalent to the cleaning member.That is, in the present embodiment,
It may be said that realizing except electricity or the device 24 of electrification double as the clear of the toner removal that will remain on the surface of intermediate transfer rollers 20
Clean component.
It realizes except electricity or the device 24 of electrification are grounded as shown in Figure 2.
In addition, as the cleaning member in addition to above-mentioned realization in addition to electricity or the device 24 of electrification, as shown in Fig. 2, matching
Set the cleaning blade 32 for scraping the toner for remaining on the surface of intermediate transfer rollers 20.
As shown in Figure 1, including above-mentioned intermediate transfer rollers 20, secondary transfer roller 16, realizing except electricity or the electrification charged
Component 23 realizes that the secondary transfer printing component 4 constituted except electricity or the device 24 of electrification can pass through 21 edge of the first lifting part
Up and down direction is mobile.In Fig. 1 by dotted line illustrate secondary transfer printing component 4 indicate be by solid line illustrate secondary transfer printing component 4
State after being moved upward.
As described above, secondary transfer printing component 4 and moving along the vertical direction with to 4 side of secondary transfer printing component convey come
The thickness for transferring object 33 is mobile to correspondingly specified altitude position appropriate, so as to using intermediate transfer rollers 20 to turning
The pressurization of print object 33 forms slight void between intermediate transfer rollers 20 and transfer object 33.
In the present embodiment, the first lifting part 21 with by the thickness (not shown) for the entrance side for being configured at transfer unit 5
The thickness for the transfer object 33 that detection part detects correspondingly, makes secondary transfer printing component 4 to specified altitude position appropriate
It is mobile.Thickness sensitivity component is the range sensor detected to the thickness of test object object.
In the following, being illustrated to transfer unit 5.
As shown in Figure 1, transfer unit 5 is configured at the appropriate location of the downside of secondary transfer printing component 4.Transfer unit 5 is used for
Transfer object 33 is conveyed to 4 side of secondary transfer printing component, specifically, multiple conveying rollers are equivalent to the transfer unit.In the following,
In the present embodiment, " transfer unit 5 " is properly termed as " conveying roller 5 ".
Conveying roller 5 is so-called rubber rollers, is grounded as shown in Figure 2.Conveying roller 5 is with processing speed 80mm/sec conveying
Transfer object 33.
In the following, being illustrated to transfer member 6 three times.
As shown in Figure 1, transfer member 6 is located at the appropriate location of the downside of secondary transfer printing component 4 and is configured at conveying three times
Substantially middle on the front-rear direction of component 5.Transfer member 6 is by secondary transfer printing to the tune of the second intermediate transfer medium 20 three times
Toner image transfer (transferring three times) is in transfer object 33.
Transfer member 6 is configured to have and transfers the first roller 34 three times, transfers the second roller 35 three times and transfer three times three times
Third roller 36.The first roller 34 is transferred three times, transfer the second roller 35 three times and transfers third roller 36 three times is equivalent to technical solution
In " be relatively configured with second intermediate transfer medium, the voltage as defined in be applied and will transfer to this
Multiple transfer members that the toner image of two intermediate transfer mediums is transferred to the transfer object ".Is transferred three times
One roller 34, transfer three times the second roller 35 and three times transfer third roller 36 be metal transfer roll, from the front and back in Fig. 1
To front be arranged in sequence with transfer three times the first roller 34, three times transfer the second roller 35 and three times transfer third roller 36.
In the following, being illustrated to each structure of transfer member 6 three times.
As shown in Figure 1 and Figure 2, transferring the first roller 34 three times is to be transported to transfer member three times in transfer object 33
When 6 side, the component being in contact at first with transfer object 33 in the transfer roll of transfer member 6 three times is constituted.
It is grounded as shown in Fig. 2, transferring the first roller 34 three times by ground resistance 37.In the present embodiment, ground resistance 37
Resistance value be 10M Ω.
Ground resistance 37 is equivalent in technical solution and " supplies caused by the voltage as being applied to the transfer member along described
The device that the electric current of the face direction flowing of transfer object flows through ".By with such ground resistance 37, as a result, in this reality
It applies in example, the transfer pair generated because being applied to the aftermentioned voltage for transferring the second roller 35 three times and transfer third roller 36 three times
As the electric current in the face direction of object 33 is flowed via ground resistance 37.
Here, in the present embodiment, compared with image forming apparatus 200 (comparative example 1) shown in Fig. 4, to transferring three times
The transfer efficiency for the case where first roller 34 is grounded by ground resistance 37 is illustrated.
In comparative example 1, as shown in figure 4, the ground resistance 39 of free AC power source 38,10M Ω, 40 structure of Zener diode
At transfer voltage power supply three times, via the series resistance 41 of 100M Ω, to transferring the first roller 34 three times, transfer the second roller three times
35 and three times transfer third roller 36 apply as defined in DC voltage and alternating voltage superimposed voltage.
As the comparative example 1, do not having for transferring the second roller 35 and three times transfer third roller 36 three times because being applied to
Voltage and in the case where the device (ground resistance 37) that flows through of electric current of the face direction flowing of edge transfer object 33 that generates,
When transfer object 33 (for example, non-sintered ceramic) transfer that will be unstable and extremely low to resistance, for the transfer object
33 transfer efficiency can be deteriorated.
On the other hand, in the present embodiment, due to ground resistance 37, second is transferred three times because being applied to
Roller 35 and three times transfer third roller 36 voltage and generate transfer object 33 face direction electric current via ground resistance
37 flowings.The present embodiment is used as a result, even if the resistance of transfer object 33 is unstable and extremely low, can also make transfer efficiency
Well.
It is back to Fig. 1 and Fig. 2, continues to explain transfer member 6 three times.
The second roller 35 is transferred three times and transfer third roller 36 is to be transported to transfer three times in transfer object 33 three times
When 6 side of component, the toner image in the second intermediate transfer medium 20 is needed on to the component of transfer object three times.
As shown in Fig. 2, the transfer three times that the ground resistance 39 of free AC power source 38,10M Ω, Zener diode 40 are constituted
Voltage source applies rule to transferring the second roller 35 three times and transferring third roller 36 three times via the series resistance 41 of 100M Ω
Fixed DC voltage and alternating voltage.In the present embodiment, the superimposed current of DC current and alternating voltage is set as frequency and is
500Hz, positive peak value are+5.0kV, and negative peak value is -1.5kV, and average value is+1.75kV.
In addition, transferring the second roller 35 and the three times surface of transfer third roller 36 and above-mentioned transfer voltage power supply three times three times
Between resistance be 1E+7 (1 × 107) Ω or more and 1E+9 (1 × 109) Ω or less.
It in the present embodiment, is in transfer voltage power supply three times and to transfer the second roller 35 three times and transfer third roller three times
The structure of the series resistance 41 of 100M Ω is configured between 36, but not limited thereto.In addition to this, for example, it is also possible to by made of metal
Transfer three times the second roller 35 and three times transfer third roller 36 be set as mandrel outer surface covering have be equivalent to 100M Ω
Rubber rollers made of the rubber of resistance.
Here, in the present embodiment, compared with image forming apparatus 300 (comparative example 2) shown in fig. 5, to will turn three times
It prints the second roller 35 and the resistance between the surface and the above-mentioned power supply of transfer voltage three times of transfer third roller 36 is set as 1E+7 three times
(1×107) Ω or more and 1E+9 (1 × 109) transfer efficiency of situation of Ω or less is illustrated.
In comparative example 2, as shown in figure 5, the ground resistance 39 of free AC power source 38,10M Ω, 40 structure of Zener diode
At transfer voltage power supply three times, to transfer three times the first roller 34, three times transfer the second roller 35 and three times transfer third roller 36
The superimposed voltage of DC voltage and alternating voltage as defined in applying.
In this way, transferring the second roller 35 and three times transfer third roller 36 and transfer voltage three times three times in comparative example 2
Without configuration series resistance 41 between power supply 38~40, therefore it will can not transfer three times the second roller 35 and transfer third roller three times
Resistance between 36 surface and three times transfer voltage power supply 38~40 is set as 1E+7 (1 × 107) Ω or more and 1E+9 (1 × 109)
Ω or less.
In above-mentioned comparative example 2, the first roller 34 is being transferred three times, transfer the second roller 35 three times and is transferring third three times
Resistance between roller 36 and three times transfer voltage power supply 38~40 is less than 1E+7 (1 × 107) in the case where Ω, when resistance is extremely low
Transfer object 33 not only transfers between the first roller 34 in transfer object 33 and three times close to when transferring the first roller 34 three times
Flashing discharges in short space, and also becomes excessively, to will lead to supply voltage decline to the electric current that other devices leak.
In addition, being more than 1E+9 (1 × 10 in above-mentioned resistance9) in the case where Ω, the efficiency transferred to transfer object deteriorates.
On the other hand, using the present embodiment, the second roller 35 will be transferred three times and transfers the surface of third roller 36 three times
Resistance between transfer voltage power supply 38~40 three times is set as 1E+7 (1 × 107) Ω or more and 1E+9 (1 × 109) Ω hereinafter,
Therefore, it is able to suppress transfer object 33 and transfers the generation of the spark discharge between the first roller 34 three times, prevent from filling to other
The case where setting the electric current of leakage becomes excessive and supply voltage is caused to decline.Therefore, using the present embodiment, can make to transfer
Efficiency is better.
In the following, illustrating the variation of image forming apparatus of the invention referring to Fig. 6.
Image forming apparatus 50 (variation) shown in fig. 6 has and embodiment phase other than transfer member 51 three times
Same structure and construction.Therefore, in variation, identical attached drawing is marked for structure identical with embodiment and construction
It marks and omits the description, be illustrated only for the structure of transfer member 51 three times.
As shown in fig. 6, three times transfer member 51 be configured to have transfer three times the first roller 34, transfer three times the second roller 35 with
And third roller 36 is transferred three times.
In variation, as shown in fig. 6, the transfer three times that the ground resistance 39 of free DC power supply 52 and 10M Ω are constituted
Voltage source applies rule to transferring the second roller 35 three times and transferring third roller 36 three times via the series resistance 41 of 100M Ω
Fixed DC voltage.In variation, DC voltage is+3.5kV.
More than, according to the present invention, it is possible to provide the long lifetime for being able to achieve intermediate transfer medium and high-precision, high-quality
Image forming apparatus.
In addition to this, the present invention can implement various changes in the range of not changing purport of the invention certainly.
The explanation of appended drawing reference
1,50: image forming apparatus, 2: image-forming block, 3: primary transfer component, 4: secondary transfer printing component, 5: transfer unit
(conveying roller), 6,51: transfer member three times, 7Y, 7M, 7C, 7Bk: image-carrier (photosensitive drums), 8: charging member (corona charging
Device), 9: exposure component (LED print head), 10: developing parts (developing apparatus), 10a: toner supply container, 10b: shell,
10c: agitating member, 10d: supply roller, 10e: developer roll, 10f: layer thickness control component, 11: cleaning member (drum cleaner), 12:
First intermediate transfer medium (intermediate transfer belt), 13: band driven roller, 14: band idler roller, 15: primary transfer roller, 16: secondary turn
Roller is printed, 17: dummy roll, 18: cleaning member (band cleaner), 19,52: DC power supply, 20: the second intermediate transfer mediums are (intermediate
Transfer roll), 21: the first lifting parts, 22: the second lifting parts, 23: realizing except (realization removes for electricity or the charging member charged
The charged device that electricity perhaps charges) 24: realize the device (Clean- brush roll) except electricity or electrification, 25: mandrel, 26: foam elasticity
Body layer, 27: intermediate solid layer, 28: surface coating, 29,38: AC power source, 30,37,39: ground resistance, 31,40: Zener
Diode, 32: cleaning blade, 33: transfer object, 34: transferring three times the first roller (transfer member), 35: transferring second three times
Roller (transfer member), 36: third roller (transfer member) is transferred three times, 41: series resistance.
Claims (13)
1. a kind of image forming apparatus includes: image-carrier in structure, it is used to carry toner image；And transfer
The toner image for being carried on the image-carrier can be needed on transfer object, the image forming apparatus by component
It is characterized in that,
The transfer member is configured to include
First intermediate transfer medium can be rotated while the surface with image carrier is in contact, and certainly should
Image-carrier transfers the toner image；And
Second intermediate transfer medium can be revolved while being in contact with the surface of first intermediate transfer medium
Turn, transferred the toner image from first intermediate transfer medium and the toner image is needed on the transfer object
Object.
2. image forming apparatus according to claim 1, which is characterized in that
The transfer object is ceramics.
3. image forming apparatus according to claim 1 or 2, which is characterized in that
First intermediate transfer medium is created as cricoid intermediate transfer belt,
The intermediate transfer belt is formed by polyimides.
4. image forming apparatus described in any one of claim 1 to 3, which is characterized in that
Volume resistivity when being applied with 10V voltage of first intermediate transfer medium is 1 × 108Ω cm or more and 1 ×
1012Ω cm or less.
5. image forming apparatus according to any one of claims 1 to 4, which is characterized in that
Second intermediate transfer medium is intermediate transfer rollers, which has the foaming bullet formed by foaming elastomer
Property body layer and be configured at the foaming elastomer layer outside surface coating.
6. image forming apparatus according to claim 5, which is characterized in that
It is 1 × 10 that the surface coating, which has surface resistivity,9Ω/ or more insulating properties.
7. image forming apparatus according to claim 5 or 6, which is characterized in that
The intermediate transfer rollers have intermediate solid layer between the foaming elastomer layer and the surface coating,
The intermediate solid layer has the surface resistivity that surface resistivity is the foaming elastomer layer or more and the surface
The surface resistivity of coating electric conductivity below.
8. image forming apparatus according to any one of claims 1 to 7, which is characterized in that
The image forming apparatus has multiple transfer members, and multiple transfer member and second intermediate transfer medium are relatively
Configuration can will transfer to the toner image transfer of second intermediate transfer medium and being applied defined voltage
In the transfer object,
The resistance applied between the defined power supply of voltage and the surface of the transfer member is 1 × 107Ω or more and 1 ×
109Ω or less.
9. image forming apparatus according to claim 8, which is characterized in that
The image forming apparatus has caused by supplying the voltage as being applied to the transfer member along the face of the transfer object
The device that the electric current of direction flowing flows through.
10. image forming apparatus according to claim 8 or claim 9, which is characterized in that
The voltage for being applied to the transfer member is the superimposed voltage of DC voltage and alternating voltage.
11. image forming apparatus described according to claim 1~any one of 10, which is characterized in that
The image forming apparatus is in second intermediate transfer medium from first intermediate transfer medium transferred with toner
Direction of rotation downstream side there is charging member, which can be de-energized the surface of second intermediate transfer medium
Or charge the surface of second intermediate transfer medium.
12. image forming apparatus described according to claim 1~any one of 11, which is characterized in that
The image forming apparatus has the device realized except electricity or electrification, which can be to second intermediate transfer medium
Surface be de-energized or charge the surface of second intermediate transfer medium.
13. image forming apparatus according to claim 12, which is characterized in that
It is described to realize except electricity or the device of electrification double as the toner that remain on the surface of second intermediate transfer medium
The cleaning member of removal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016104989A JP6879676B2 (en) | 2016-05-26 | 2016-05-26 | Image forming device |
| JP2016-104989 | 2016-05-26 | ||
| PCT/JP2016/071652 WO2017203723A1 (en) | 2016-05-26 | 2016-07-15 | Image forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109154788A true CN109154788A (en) | 2019-01-04 |
| CN109154788B CN109154788B (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680086096.5A Active CN109154788B (en) | 2016-05-26 | 2016-07-15 | Image forming apparatus with a toner supply device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6879676B2 (en) |
| CN (1) | CN109154788B (en) |
| WO (1) | WO2017203723A1 (en) |
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| JP2010186059A (en) * | 2009-02-12 | 2010-08-26 | Ricoh Co Ltd | Image forming apparatus |
| JP2012053212A (en) * | 2010-08-31 | 2012-03-15 | Sharp Corp | Intermediate transfer device, image forming device and image forming method |
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- 2016-05-26 JP JP2016104989A patent/JP6879676B2/en active Active
- 2016-07-15 CN CN201680086096.5A patent/CN109154788B/en active Active
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| JPH11174782A (en) * | 1997-12-17 | 1999-07-02 | Fuji Xerox Co Ltd | Image forming device |
| JP2002162835A (en) * | 2000-11-22 | 2002-06-07 | Fuji Xerox Co Ltd | Image forming device |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2017203723A1 (en) | 2017-11-30 |
| CN109154788B (en) | 2022-02-08 |
| JP6879676B2 (en) | 2021-06-02 |
| JP2017211525A (en) | 2017-11-30 |
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