JP2004085958A - Cleaning mechanism and its control method for toner feed roller in liquid development electrophotographic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a toner feed roller cleaning mechanism that efficiently cleans carved pattern grooves on the surface of a toner feed roller, and to provide a technique for realizing a control method in which the cleaning of the toner feed roller is periodically performed. <P>SOLUTION: A liquid development electrophotographic device is provided with the mechanism for cleaning the toner feed roller (roller). This cleaning mechanism is designed to clean the roller mounted in the development mechanism by applying a bias voltage to the roller and separating toner particles remaining in the carved pattern grooves on the surface of the roller. Also, the cleaning mechanism is set so that the process for cleaning the roller is added to the process for controlling the operation of the liquid development electrophotographic device. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology for realizing a mechanism for cleaning a surface of a toner supply roller for taking out a liquid toner to be used for image development from a toner supply tray in a liquid developing electrophotographic apparatus. The present invention relates to a method for controlling a developing electrophotographic apparatus.
[0002]
[Prior art]
With reference to FIG. 9, a description will be given of a developing mechanism of a conventional liquid developing electrophotographic apparatus.
[0003]
An exposure mechanism 53c forms a latent image on the surface of the photoreceptor 53 that contacts and provides a toner image by contacting the intermediate transfer body 56, and the developing roller 52 selectively selects the surface of the photoreceptor 53 on which the latent image has been formed. The latent image is visualized by attaching a high-viscosity liquid toner to the toner image to form a toner image to be transferred to the intermediate transfer body 56.
[0004]
The surface portion of the photoreceptor 53 on which the toner image is formed is transferred to the intermediate transfer body 56 by the transfer blade 56, and then the cleaning blade 53a removes the liquid toner remaining on the post-transfer toner image. Is a clean surface, and the charging mechanism 53b forms a uniformly charged surface to prepare for the formation of a new latent image by the exposure mechanism 53c.
[0005]
The surface of the developing roller 52 in which the high-viscosity liquid toner is selectively adhered to the surface portion of the photosensitive member 53 on which the latent image has been formed is removed by a cleaning blade 52a to remove the liquid toner remaining on the surface. The transfer supply of a proper amount of liquid toner uniformly distributed from the toner supply roller 51 is received.
[0006]
In order for the photoconductor 53 to form a better toner image without unevenness than the latent image formed on the surface of the photoconductor 53, the liquid toner layer provided by the developing roller 52 on the surface of the photoconductor 53 for transfer is uniformly formed. It must be composed of an appropriate amount of liquid toner distributed.
[0007]
Accordingly, the first function required of the toner supply roller 51 for forming a liquid toner layer that draws out the liquid toner stored in the toner supply tray 54 and provides the liquid toner to the developing roller 52 is as follows. It can be said that the layer is accurately and reproducibly generated.
[0008]
Various methods have been conventionally proposed to make the liquid toner layer formed by the toner supply roller 51 uniform and of an appropriate thickness. Here, regularly patterned fine pattern grooves are engraved on the surface of the toner supply roller 51, and the pattern groove portions are filled with liquid toner. Then, the surface of the toner supply roller 51 is scraped with a blade 51a to remove excess liquid toner. A description will be given based on a method of transferring and supplying the liquid toner quantified by dropping to the developing roller 52.
[0009]
By applying the toner supply roller 51 with an engraving roller having a pattern groove on the surface as described above, a fixed amount of liquid toner is measured without applying mechanical stress to the liquid toner itself, and a liquid toner layer having a predetermined thickness is formed. It has the advantage that it can be formed and that the fluctuation of the layer thickness due to the fluctuation of the viscosity of the liquid toner which fluctuates due to the ambient temperature can be suppressed.
[0010]
However, the toner supply roller 51, which is an engraving roller having a pattern groove on the surface, coagulates and fixes the residual liquid toner remaining in the pattern groove for a long period of time. Accumulates, the groove cross section effective for transfer supply gradually decreases, and the amount of liquid toner which the toner supply roller 51 transfers to the developing roller 52 decreases.
[0011]
As a matter of course, when the amount of the liquid toner supplied from the toner supply roller 51 to the developing roller 52 decreases, the density of the toner image obtained by visualizing the latent image formed on the surface of the photoconductor 53 is reduced. And the image quality also deteriorates.
[0012]
Therefore, in the liquid developing electrophotographic apparatus to which the toner supply roller 51 of the engraving roller having the pattern groove on the surface is applied, the toner supply roller 51 on which the liquid toner is coagulated and fixed is cleaned to form the pattern groove on the surface. It is necessary to remove the liquid toner that has agglomerated and fixed.
[0013]
The liquid toner coagulated and fixed in the pattern groove is difficult to apply because the mechanical cleaning method may damage the toner supply roller 51 itself. Cleaning is performed by a method using an ultrasonic cleaning device or the like.
[0014]
Also, needless to say, when the liquid-developed electrophotographic apparatus is an apparatus that provides a color image in a plurality of colors, the liquid-developed electrophotographic apparatus is provided with a developing mechanism for individual colors, and is adapted to individual color specifications. A toner supply roller corresponding to each of the combined liquid toners is mounted.
[0015]
Therefore, a mechanism for cleaning the toner supply roller 51 by a method such as ultrasonic cleaning in a liquid developing electrophotographic apparatus that provides a color image must be prepared for each liquid toner of each color.
[0016]
Further, the mechanism for cleaning the toner supply roller 51 requires consideration of contamination of the surroundings by the liquid toner and consideration of contamination such as color mixing between the liquid toners based on the plurality of color specifications. It is difficult to perform the cleaning. Eventually, the cleaning of the toner supply roller 51 is separately entrusted to a dedicated skill holder, and a request is made to perform the cleaning operation by a dedicated cleaning facility.
[0017]
[Problems to be solved by the invention]
As described above, the toner supply roller of the conventional liquid developing electrophotographic apparatus has the following problems.
[0018]
By applying a toner supply roller by an engraving roller having a pattern groove engraved on the surface, a fixed amount of liquid toner can be measured without applying mechanical stress to the liquid toner to form a liquid toner layer having a predetermined thickness. However, if the liquid toner of the residue remaining in the engraving groove portion of the toner supply roller surface by the engraving roller is left for a long period of time, the groove cross-section effective for transfer of the engraving groove portion is gradually reduced by cohesion and fixation, The amount of liquid toner actually transferred to the developing roller is reduced.
[0019]
In order to remove the residual liquid toner remaining in the engraved groove portion on the surface of the toner supply roller, the operation of the liquid developing electrophotographic apparatus is stopped and the toner supply roller is removed, and for example, a dedicated ultrasonic cleaning device or the like is used. Cleaning work must be requested.
[0020]
Accordingly, in the liquid developing electrophotographic apparatus, a control mechanism is realized that realizes a cleaning mechanism of the toner supply roller for efficiently cleaning the engraving pattern groove provided on the surface of the toner supply roller, and periodically executes the cleaning of the toner supply roller. It is an object of the present invention to realize a method.
[0021]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has taken the following measures.
[0022]
The liquid developing electrophotographic apparatus further includes a toner supply roller cleaning mechanism for cleaning the installed toner supply roller, and the cleaning procedure of the toner supply roller is performed in a control procedure in which the liquid developing electrophotographic apparatus performs a task. Add and set the procedure to execute.
[0023]
In the cleaning mechanism for the toner supply roller of the liquid developing electrophotographic apparatus, when cleaning the toner supply roller, a bias voltage in which an AC component is superimposed on a DC component is applied to the toner supply roller.
[0024]
In the cleaning mechanism of the toner supply roller of the liquid developing electrophotographic apparatus, a replacement mechanism for replacing the liquid toner stored in the toner supply tray with the cleaning liquid when cleaning the toner supply roller is provided.
[0025]
By taking these measures, the liquid developing electrophotographic apparatus has an effect of being equipped with a mechanism for executing cleaning of the toner supply roller in the equipped state.
[0026]
In the control method of the liquid developing electrophotographic apparatus, an operation mode for executing cleaning of the toner supply roller is additionally provided at the time of startup or at the end of all operations.
[0027]
By taking this measure, the liquid developing electrophotographic apparatus has an effect of equipping a control procedure for executing cleaning of the toner supply roller as a part of a control procedure for performing regular tasks.
[0028]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention takes the following forms.
[0029]
A cleaning mechanism for a toner supply roller of a liquid developing electrophotographic apparatus includes a bias voltage application mechanism for applying a bias voltage in which an AC component is superimposed on a DC component to the toner supply roller.
[0030]
By taking this form, the residual toner adhering to the surface groove of the toner supply roller is separated from the surface of the toner supply roller by the bias voltage of the AC component, and the toner supply roller is biased by the bias voltage of the DC component. The effect of being able to be kept away from the surface is obtained.
[0031]
In the cleaning mechanism of the toner supply roller of the liquid developing electrophotographic apparatus, the toner supply roller and the toner supply plate are provided with respective bias electrodes.
[0032]
In the cleaning mechanism for the toner supply roller of the liquid developing electrophotographic apparatus, the toner supply tray that supplies the toner toner to the toner supply roller includes a toner supply / recovery mechanism and a cleaning liquid supply / recovery mechanism.
[0033]
By taking these forms, the cleaning mechanism of the toner supply roller constitutes a replacement mechanism by a toner supply / recovery mechanism and a cleaning liquid supply / recovery mechanism, and stores the cleaning liquid in the toner supply plate in the cleaning mode. The remaining toner adhering to the surface groove of the toner supply roller moves into the cleaning liquid stored in the toner supply tray.
[0034]
In the cleaning mechanism of the toner supply roller of the liquid developing electrophotographic apparatus, the toner supply roller and the developing roller are provided with respective bias electrodes.
[0035]
With this configuration, the residual toner adhering to the surface groove of the toner supply roller is transferred to the developing roller and then collected by the cleaning blade provided on the developing roller.
[0036]
In the control method of the liquid developing electrophotographic apparatus, a control procedure for cleaning the toner supply roller is executed when the liquid developing electrophotographic apparatus is started and / or terminated.
[0037]
By adopting this form, the liquid developing electrophotographic apparatus has an effect of having an operation mode for cleaning the toner supply roller during the execution of the business.
[0038]
【Example】
A representative embodiment of the present invention will be described with reference to FIGS.
[0039]
FIGS. 1, 2 and 5 show a developing mechanism of a liquid developing electrophotographic apparatus according to a representative embodiment of the present invention.
[0040]
That is, as shown in FIG. 1, the developing roller 2 for selectively transferring and supplying the liquid toner to the surface of the photoreceptor 3 to form a toner image is formed of a liquid toner layer quantified to have a more uniform thickness than the toner supply roller 1. Receive the offer.
[0041]
The plus electrode of the bias voltage applying mechanism 5a is arranged on the toner supply roller 1, and the minus electrode is arranged on the toner supply tray 4 for storing the toner to be supplied to the toner supply roller 1.
[0042]
When the operation mode of the liquid developing electrophotographic apparatus is designated as the cleaning mode of the toner supply roller 1, the toner supply roller 1 starts rotating and the bias voltage applying mechanism 5 a is connected to the toner supply roller 1. A bias voltage is applied between the plus electrode thus formed and the minus electrode arranged on the toner supply tray 4.
[0043]
As shown in FIG. 2, when the operation mode of the liquid developing electrophotographic apparatus is set to the cleaning mode of the toner supply roller 1, the toner supply roller 1 and the toner supply tray 4 are moved by an appropriate release mechanism. The contact between the toner supply roller 1 and the developing roller 2 may be released.
[0044]
The bias voltage applied by the bias voltage applying mechanism 5a superimposes an AC component on a DC component. Since the toner particles contained in the liquid toner are positively charged, the toner particles of the liquid toner filled in the engraved groove of the toner supply roller 1 by the AC component included in the bias voltage are intermittent. The peeled toner particles are separated from the toner supply roller 1 by a DC component included in the bias voltage while floating in the liquid toner stored in the toner supply tray 4 while being peeled off by a strong peeling force. Move in the direction.
[0045]
As shown in FIG. 5, in the developing mechanism shown in FIGS. 1 and 2, the toner supply tray 4 has the toner supply / recovery mechanism 6a and the cleaning liquid supply / recovery mechanism 6b so that the toner supply roller 1 can be efficiently cleaned. Can be performed.
[0046]
That is, the toner supply and recovery mechanism 6a includes a pump and a supply pipe for supplying the liquid toner stored in the storage tank to the toner supply plate 4, and a recovery pipe and a pump for recovering the liquid toner from the toner supply plate 4. The cleaning liquid supply and recovery mechanism 6b includes a pump and a supply pipe for supplying the cleaning liquid stored in the storage tank to the toner supply plate 4, and a recovery pipe and a pump for recovering the cleaning liquid from the toner supply plate 4.
[0047]
The cleaning liquid has a structure mainly including a carrier liquid component constituting the liquid toner. Therefore, no problem occurs even if the liquid toner remaining in the toner supply tray 4 is mixed with the cleaning liquid, or if the cleaning liquid is mixed with the liquid toner.
[0048]
Thus, when the liquid developing electrophotographic apparatus takes the toner supply roller 1 in the cleaning mode, the toner supply / collection mechanism 6a collects the liquid toner stored in the toner supply tray 4, and then the cleaning liquid supply / collection mechanism. 6b supplies the cleaning liquid to the toner supply tray 4.
[0049]
Next, as described above, the bias voltage applying mechanism applies a predetermined bias voltage between the toner supply roller 1 and the toner supply plate 4 to remove the residual liquid toner remaining in the engraving groove of the toner supply roller 1. The toner particles, which are solid components, are peeled off and floated in the cleaning liquid.
[0050]
The toner particles suspended in the cleaning liquid are collected by the cleaning liquid supply / recovery mechanism 6b together with the cleaning liquid at the end of the cleaning mode.
[0051]
FIGS. 3 and 4 show a developing mechanism of a liquid developing electrophotographic apparatus according to another representative embodiment of the present invention.
[0052]
That is, as shown in FIG. 3, the developing roller 2 for selectively transferring and supplying the liquid toner to the surface of the photoreceptor 3 to form a toner image is formed by a liquid toner layer having a uniform thickness and a uniform thickness. Receive the offer.
[0053]
The positive electrode of the bias voltage applying mechanism 5b is disposed on the toner supply roller 1, and the negative electrode is disposed on the developing roller 2 that contacts the toner supply roller 1.
[0054]
When the operation mode of the liquid developing electrophotographic apparatus is designated as the cleaning mode of the toner supply roller 1, the toner supply roller 1 starts rotating and the bias voltage applying mechanism 5b is connected to the toner supply roller 1. A bias voltage is applied between the plus electrode thus formed and the minus electrode provided on the developing roller 2.
[0055]
As shown in FIG. 4, when the operation mode of the liquid developing electrophotographic apparatus is set to the cleaning mode of the toner supply roller 1, the toner supply roller 1 and the development roller 2 are moved by an appropriate release mechanism. The contact between the developing roller 2 and the photoconductor 3 may be released.
[0056]
The bias voltage applied by the bias voltage applying mechanism 5b superimposes an AC component on a DC component. Since the toner particles contained in the liquid toner are positively charged, the toner particles of the liquid toner filled in the engraved groove of the toner supply roller 1 by the AC component included in the bias voltage are intermittent. The peeled toner particles are pulled by a strong peeling force, and are attracted by the DC component included in the bias voltage, and move from the engraved groove of the toner supply roller 1 to the surface of the developing roller 2.
[0057]
The toner particles moved to the surface of the developing roller 2 are collected by the cleaning blade 2a.
[0058]
Based on the flowchart shown in FIG. 6, a description will be given of a control procedure executed by the liquid developing electrophotographic apparatus according to the representative embodiment of the present invention in the cleaning mode of the toner supply roller. The reference numerals used in the description of each step showing the procedure of each control are based on FIG. 1 to FIG.
[0059]
In step S01, a host device (not shown) connected to the liquid developing electrophotographic apparatus instructs activation.
[0060]
In step S02, the liquid developing electrophotographic apparatus inquires of the operator about whether or not to execute cleaning of the toner supply roller included in the liquid developing electrophotographic apparatus through the host device. If an instruction to execute cleaning is obtained, the process proceeds to step S03. The cleaning of the toner supply roller is executed.
[0061]
Details of the control procedure for executing the cleaning of the toner supply roller executed in step S03 are shown in FIG. 7 or FIG.
[0062]
The control procedure based on FIG. 7 is performed by the bias voltage applying mechanism 5a between the positive electrode provided on the toner supply roller 1 and the negative electrode provided on the toner supply plate 4 as shown in FIGS. The bias voltage applying mechanism 5b is based on a mechanism for applying a bias voltage in which an AC component is superimposed on a DC component, or a positive electrode and a developing roller provided in the toner supply roller 1 as shown in FIGS. 2 is based on a mechanism for applying a bias voltage in which an AC component is superimposed on a DC component between the negative electrode provided in 2.
[0063]
The control procedure based on FIG. 8 is performed by the bias voltage applying mechanism 5a between the positive electrode provided on the toner supply roller 1 and the negative electrode provided on the toner supply plate 4 as shown in FIGS. In addition to a mechanism for applying a bias voltage in which an AC component is superimposed on a DC component, the toner supply tray 4 is based on a mechanism provided with a toner supply / collection mechanism 6a and a cleaning liquid supply / collection mechanism 6b as shown in FIG. It is.
[0064]
Based on FIG. 7, the details of the control procedure for executing the cleaning of the toner supply roller by the liquid developing electrophotographic apparatus according to the mechanism example shown in FIGS. 1 to 4 in the above step S03 will be described.
[0065]
In step S21, the connection of the roller in the developing mechanism is released.
[0066]
In the mechanism shown in FIGS. 1 and 2, the connection between the toner supply roller 1 and the developing roller 2 is released as already described with reference to FIG. In the mechanism shown in FIGS. 3 and 4, the connection between the developing roller 2 and the photoconductor 3 is released as already described with reference to FIG.
[0067]
In step S22, a bias voltage is applied.
[0068]
In the example of the mechanism shown in FIGS. 1 and 2 described above, the bias voltage application executed in step S22 is performed by the positive electrode provided in the toner supply roller 1 by the bias voltage application mechanism 5a as already described with reference to FIG. A bias voltage in which an AC component is superimposed on a DC component is applied between the negative electrode and the negative electrode provided on the toner supply tray 4.
[0069]
Further, in the example of the mechanism shown in FIGS. 3 and 4, the bias voltage applying mechanism 5b is provided between the positive electrode provided on the toner supply roller 1 and the negative electrode provided on the developing roller 2 as already described with reference to FIG. , A bias voltage in which an AC component is superimposed on a DC component is applied.
[0070]
In step S23, the rotation driving of the toner supply roller 1 is started. As described with reference to FIGS. 1 to 4, the engraving groove formed on the surface of the toner supply roller 1 is cleaned with the rotation of the toner supply roller 1.
[0071]
After the rotation of the toner supply roller 1 is performed for a predetermined time, the rotation of the toner supply roller 1 is terminated in step S24, the flow proceeds to step S25 to cancel the application of the bias voltage, and the flow further proceeds to step S26. Is restored, and the control procedure for cleaning the toner supply roller ends.
[0072]
Based on FIG. 8, the details of the control procedure for executing the cleaning of the toner supply roller by the liquid developing electrophotographic apparatus according to the example of the mechanism shown in FIGS. 1, 2 and 5 in the step S03 will be described.
[0073]
In step S41, as described with reference to FIG. 2, the connection between the toner supply roller 1 and the developing roller 2 is released.
[0074]
In step S42, as described with reference to FIG. 5, the toner supply / recovery mechanism 6a extracts and collects the liquid toner stored in the toner supply tray 4.
[0075]
In step S43, the cleaning liquid supply / recovery mechanism 6b injects the cleaning liquid into the toner supply plate 4, as already described with reference to FIG.
[0076]
In step S44, as already described with reference to FIG. 2, the bias voltage applying mechanism 5a superimposes the AC component on the DC component between the positive electrode provided on the toner supply roller 1 and the negative electrode provided on the toner supply plate 4. Apply a bias voltage.
[0077]
In step S45, the rotation driving of the toner supply roller 1 is started. As described with reference to FIG. 2, the engraving groove formed on the surface of the toner supply roller 1 is cleaned with the rotation of the toner supply roller 1.
[0078]
After the rotation driving of the toner supply roller 1 has been performed for a predetermined time, the application of the bias voltage is released in step S46, and the process proceeds to step S47 to terminate the rotation driving of the toner supply roller 1 described above.
[0079]
In step S48, the cleaning liquid supply / recovery mechanism 6b extracts and recovers the cleaning liquid stored in the toner supply plate 4.
[0080]
In step S49, the toner supply / recovery mechanism 6a injects the liquid toner into the toner supply tray 4, proceeds to step S50, restores the connection of the rollers, and ends the control procedure for cleaning the toner supply rollers.
[0081]
Returning to FIG. 6, the description of the control procedure executed by the liquid developing electrophotographic apparatus will be continued.
[0082]
In step S04, an initial value for a task executed by the liquid developing electrophotographic apparatus is set.
[0083]
If the operator instructs not to execute the cleaning of the toner supply roller in step S02, the process proceeds to step S04.
[0084]
In step S05, print data transferred from a host device (not shown) connected to the liquid developing electrophotographic apparatus is received, and the flow advances to step S06 to execute print output.
[0085]
If the job related to print output is completed in step S07, the process proceeds to step S08, in which the liquid developing electrophotographic apparatus instructs the operator through the host device whether or not to execute the cleaning of the toner supply roller included in the liquid developing electrophotographic apparatus. If an inquiry and an instruction to execute cleaning are obtained, the flow advances to step S09 to execute cleaning of the toner supply roller.
[0086]
Details of the control procedure for executing the cleaning of the toner supply roller executed in step S09 are the same as those in step S03 described above with reference to FIG. 7 or FIG.
[0087]
Since the control procedure shown in FIG. 7 or FIG. 8 has already been described, detailed description thereof will be omitted here.
[0088]
In step S10, the liquid developing electrophotographic apparatus performs a process related to the end of work.
[0089]
If the operator instructs not to execute the cleaning of the toner supply roller in step S08, the process proceeds to step S10 to execute an end process.
[0090]
【The invention's effect】
According to the present invention, the following effects can be expected.
[0091]
A cleaning mechanism for a toner supply roller of a liquid developing electrophotographic apparatus includes a bias voltage application mechanism for applying a bias voltage in which an AC component is superimposed on a DC component to the toner supply roller.
[0092]
By taking this measure, the residual toner adhering to the surface groove of the toner supply roller is separated from the surface of the toner supply roller by the bias voltage of the AC component, and the toner supply roller is biased by the bias voltage of the DC component. The effect of being able to be kept away from the surface of is obtained.
[0093]
In the cleaning mechanism of the toner supply roller of the liquid developing electrophotographic apparatus, the toner supply roller and the toner supply plate are provided with respective bias electrodes.
[0094]
In the cleaning mechanism for the toner supply roller of the liquid developing electrophotographic apparatus, the toner supply tray that supplies the toner toner to the toner supply roller includes a toner supply / recovery mechanism and a cleaning liquid supply / recovery mechanism.
[0095]
By taking these means, the toner supply roller cleaning mechanism constitutes a replacement mechanism by the toner supply and recovery mechanism and the cleaning liquid supply and recovery mechanism, and stores the cleaning liquid in the toner supply plate in the cleaning mode, The remaining toner adhering to the surface groove of the toner supply roller moves into the cleaning liquid stored in the toner supply tray and is collected together with the cleaning liquid.
[0096]
In the cleaning mechanism of the toner supply roller of the liquid developing electrophotographic apparatus, the toner supply roller and the developing roller are provided with respective bias electrodes.
[0097]
By adopting this means, there is obtained an effect that the residual toner adhering to the surface groove of the toner supply roller is transferred to the developing roller and then collected by the cleaning blade provided on the developing roller.
[0098]
In the control method of the liquid developing electrophotographic apparatus, a control procedure for cleaning the toner supply roller is executed when the liquid developing electrophotographic apparatus is started and / or terminated.
[0099]
By taking this measure, the liquid developing electrophotographic apparatus has an operation mode for cleaning the toner supply roller at the beginning or at the end of the execution of the business, so that the surface of the toner supply roller is automatically cleaned and the toner supply roller is cleaned. The effect of preventing accumulation of toner particles in the surface groove of the roller is obtained.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating the principle according to a representative embodiment of the present invention.
FIG. 2 is an explanatory view of the principle according to a representative embodiment of the present invention.
FIG. 3 is a diagram illustrating the principle according to a representative embodiment of the present invention.
FIG. 4 is a diagram illustrating the principle according to a representative embodiment of the present invention.
FIG. 5 is an explanatory view of the principle according to a representative embodiment of the present invention.
FIG. 6 is a flowchart according to a representative embodiment of the present invention.
FIG. 7 is a flowchart according to a representative embodiment of the present invention.
FIG. 8 is a flowchart according to a representative embodiment of the present invention.
FIG. 9 is a diagram illustrating the principle according to a conventional technique.
[Explanation of symbols]
1: Toner supply roller
1a: Blade
2: Developing roller
3: Photoconductor
4: Toner supply tray
5a, 5b: bias voltage application mechanism
6a: Toner supply / recovery mechanism
6b: Cleaning liquid supply and recovery mechanism

Claims (5)

In the cleaning mechanism of the toner supply roller of the liquid developing electrophotographic apparatus,
A bias voltage applying mechanism for applying a bias voltage in which an AC component is superimposed on a DC component to the toner supply roller is provided.
A cleaning mechanism for the toner supply roller of the liquid developing electrophotographic apparatus. In the cleaning mechanism of the toner supply roller of the liquid developing electrophotographic apparatus,
The toner supply roller and the toner supply plate are provided with respective bias electrodes,
A cleaning mechanism for a toner supply roller of the liquid developing electrophotographic apparatus according to claim 1. In the cleaning mechanism of the toner supply roller of the liquid developing electrophotographic apparatus,
A toner supply tray that supplies liquid toner to the toner supply roller includes a toner supply and collection mechanism and a cleaning liquid supply and collection mechanism;
A cleaning mechanism for a toner supply roller of the liquid developing electrophotographic apparatus according to claim 2. In the cleaning mechanism of the toner supply roller of the liquid developing electrophotographic apparatus,
The toner supply roller and the developing roller are provided with respective bias electrodes,
A cleaning mechanism for a toner supply roller of the liquid developing electrophotographic apparatus according to claim 1. In the control method of the liquid development electrophotographic apparatus,
Performing a control procedure for cleaning the toner supply roller when the liquid developing electrophotographic apparatus is started and / or terminated.
A method for controlling a liquid developing electrophotographic apparatus.

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