CN106094456B - Image forming apparatus - Google Patents
Image forming apparatus Download PDFInfo
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- CN106094456B CN106094456B CN201610192718.4A CN201610192718A CN106094456B CN 106094456 B CN106094456 B CN 106094456B CN 201610192718 A CN201610192718 A CN 201610192718A CN 106094456 B CN106094456 B CN 106094456B
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- image carrier
- image
- braking distance
- loff
- forming apparatus
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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
- G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
- G03G15/5033—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
Abstract
The present invention provides a kind of image forming apparatus, possesses：Image carrier, surface form toner image；Driving device, driving image carrier rotation；Charging member makes image carrier charged；Cleaning member is contacted with the surface of image carrier；Voltage application device applies voltage to charging member；Braking distance test section detects the braking distance of image carrier；Storage part is stored with predetermined brake distance Lc；And control unit.Braking distance Loff when control unit obtains braking distance Lon when applying electrified voltage to charging member and do not apply electrified voltage to charging member, and braking distance when setting when beginning to use image carrier and not applying electrified voltage is Loff (0), when meeting Loff ＜ Loff (0) and Lc ＜ Loff/Lon relations, image carrier surface being smoothed is judged.
Description
Technical field
The present invention relates to the image forming apparatus that image is formed in recording sheet, more particularly to judging that surface is formed with tune
The method of the surface state of the image carrier of toner picture.
Background technology
It is well known that it is formed in images such as printer, duplicator, facsimile machine or the digital complex machines that possesses these functions
In device, possess photosensitive drums, charging member and cleaning balde, the photosensitive drums are an examples of Electrophtography photosensor, institute
It is charged roller for making photosensitive drum surface charged etc. to state charging member, the cleaning balde contiguously configured with photosensitive drum surface and
Removal residues in the toner or additive of photosensitive drum surface.
Such charging member touchs or proximates to configure with image carrier, is put using what the electric discharge from charging member generated
Electric product is attached to image carrier surface.Then, the frictional resistance between image carrier surface and cleaning balde rises, cleaning balde
Chatter or defect, easily cause stick slip, reduce the cleaning capacity of cleaning balde.As a result, cause toner or additive
Leakage increase, become pollution charging member or be not eliminated and remaining toner or additive adhere to image carrier surface
Underproof reason is formed so as to cause image quality decrease or generate image.
When forming the image carrier of amorphous silicon layer as photosensitive layer especially with surface, beginning to use initial stage, due to
The crystal grain generated during formation amorphous silicon layer is uneven, and the contact area of image carrier surface and cleaning balde is small, therefore
Frictional resistance is also small, and after use, being uneven for image carrier surface is worn and smooths, and image carrier surface and cleaning is caused to scrape
Frictional resistance between plate rises, and easily generates the above problem.
Therefore, in order to mitigate the load of cleaning balde, seek to be used as lubricant by supplying toner or reduce charged
The method of voltage inhibits the countermeasures such as the generation of discharging product, is well known.
The content of the invention
It is an object of the invention to provide a kind of image forming apparatus, described image forming apparatus does not have to set new detection
Mechanism, it becomes possible to judge the smoothing degree on image carrier surface.
The image forming apparatus of the present invention includes：Image carrier, surface form toner image；Driving device, described in driving
Image carrier rotates；Charging member makes the image carrier charged；Cleaning member contiguously configures, clearly with the surface of the image carrier
The surface of the clean image carrier；Voltage application device applies electrified voltage to the charging member；Braking distance test section, inspection
Survey the braking distance of the image carrier；Storage part, having stored predetermined brake distance Lc, the predetermined brake distance Lc is and institute
State the relevant constant bigger than 1 of braking distance of image carrier；And control unit, according to what is detected by the braking distance test section
The braking distance of the image carrier, judges the surface state of the image carrier, and the control unit acquisition is examined by the braking distance
The braking distance Lon during application electrified voltage of survey portion detection and described when not applying the electrified voltage
Braking distance Loff, and braking distance when not applying the electrified voltage when beginning to use the image carrier is set as Loff
(0), in the case where meeting following relations, the image carrier surface being smoothed, Loff ＜ Loff (0) and Lc ＜ are judged
Loff/Lon。
According to the present invention, as Lon ＜ Loff (0) and Lc ＜ Loff/Lon, i.e. Lon's and Loff is more than away from amplitude
During defined size, image carrier surface being smoothed is judged.The surface state of detection image carrier need not be newly set as a result,
Sensor etc., it becomes possible to judge simply and precisely whether image carrier surface has smoothed.
Description of the drawings
Fig. 1 is the schematic configuration of the tandem color printer for the image forming apparatus 11 for representing an embodiment of the present invention
Schematic cross-sectional views.
Fig. 2 is the major part for including image and forming processing unit 15 for the image forming apparatus 11 for representing present embodiment
The figure of schematic configuration.
Fig. 3 is to represent that accumulative image forms processing number and the braking distance of photosensitive drums 20 and the relation of surface roughness
Graph.
Fig. 4 is in the processing of the control of the inhibition image quality decrease in the image forming apparatus 11 for represent present embodiment
The flow chart of appearance.
Specific embodiment
Embodiments of the present invention will be described referring to the drawings.Fig. 1 is the figure for representing an embodiment of the present invention
As the schematic cross-sectional views of forming apparatus schematic configuration.Fig. 2 is to represent being formed including image for image forming apparatus 11 shown in FIG. 1
The figure of the schematic configuration of the major part of processing unit 15.
1. the structure of image forming apparatus 11
(overall structure)
As shown in Figure 1, the image forming apparatus 11 of present embodiment is tandem color printer.Image forming apparatus 11
Possess in the inside of printer main body 12：Paper feeding cassette 13, equipped with recording sheet (not shown)；Sheet feed section 14 will be remembered from paper feeding cassette 13
Record paper is sent out one by one；Image forms processing unit 15, to the recording sheet by the supply (not shown) of paper feeding cassette 13 or manual disk
Carry out image formation processing；Recording sheet transfer passage 16 conveys the recording sheet by paper feeding cassette 13 or the supply of manual disk；Second turn
Image is formed the toner image formed in processing unit 15 and is transferred to the recording sheet conveyed along recording sheet transfer passage 16 by print portion 17
On；And fixing section 18, the toner image being transferred in the second transfer section 17 is fixed in recording sheet.
(image forms the structure of processing unit 15)
Image forms processing unit 15 using inline configuration, and use is for example, yellow (Y), magenta (M), cyan (C) and black
The toner (developer) of color (K) four kinds of colors carries out image formation processing.In addition, it in the following description, only refers in particular to
When determining color, to each Arabic numerals reference numeral plus (Y, M, C, K) color with parantheses, general situation only uses me
Primary numerals illustrate.
Image, which forms processing unit 15, to be possessed：Multiple toner containers 19 correspond to a variety of colors (Y, M, C, K), and fill respectively
There is complementary toner；Multiple photosensitive drums 20, for according to the printed data sent by external connection apparatus such as personal computers
(image data) forms the toner image of a variety of colors；Multiple developing apparatus 21 supply toner to each photosensitive drums 20；It is annular
Intermediate transfer belt 22, the toner image that will be formed in each photosensitive drums 20 are transferred on the endless intermediate transfer band 22 for the first time；Band
Cleaning device 24, is configured at the upstream side of the photosensitive drums 20 of the rotation direction most upstream side of intermediate transfer belt 22, and removal is attached to
The residual toner on 22 surface of intermediate transfer belt etc.；And exposing unit 25, to each 20 outgoing beam of photosensitive drums.
(structures of photosensitive drums 20)
Photosensitive drums 20 form photosensitive layer on the surface of supporting member (matrix).Wherein, photosensitive drums 20 are cylindric by made of metal
Roughing pipe and be formed at roughing pipe surface photosensitive layer form.As formed roughing pipe metal can enumerate aluminium,
Iron, titanium, magnesium etc..The organic photosensitive layer using organic smooth conductor or inorganic photosensitive layer using inorganic photovoltaic body etc. can be utilized
As photosensitive layer, but from the high angle of durability, it is preferable to use the amorphous by film forming such as the vacuum evaporations such as silane gas
State silicon photoreceptor layer.Each photosensitive drums 20 are used to, according to the light beam projected from exposing unit 25, the tune of a variety of colors is carried on its surface
Toner picture, and toner image is needed on intermediate transfer belt 22, as shown in Figure 1, being configured at intermediate turn together with developing apparatus 21
Print the lower section of band 22.
In addition, as shown in Figure 1 and Figure 2, charged roller (charging member) 26, exposing unit are configured with around photosensitive drums 20
25th, developing apparatus 21, cleaning device 28 and charge removal device 29, primary transfer roller 27 across intermediate transfer belt 22 with it is photosensitive
Drum 20 is oppositely disposed.
Each first transfer section being made of photosensitive drums 20 and 27 co-operating of primary transfer roller is transferred to intermediate transfer belt 22
On toner image, be needed on from paper feeding cassette 13 or manual disk by the second transfer section 17 and conveyed by recording sheet transfer passage 16
In the recording sheet come.
(structure of developing apparatus 21)
Each developing apparatus 21 is essentially identical configuration, is arranged in along moving direction is rotated under intermediate transfer belt 22
Side.Developing apparatus 21 makes the toning containing the toning agent addition agent (polishing particles) being made of metal oxide particles such as titanium oxide
Agent, which is attached to, to be formed on the electrostatic latent image on 20 surface of photosensitive drums, and it is toner image to make its development.In addition, developing apparatus 21 can be with
Use known developing apparatus.
(structure of intermediate transfer belt 22)
Intermediate transfer belt 22 is the ring for being tensioned erection in printer main body 12 in the horizontal direction by driven roller and driven voller
Shape band, with being rotated by the rotation of driven roller with drive motor generation (not shown), and accompanying image formation act and by
Xun Huan driving.
(structure of charged roller 26)
Charged roller 26 is formed by such as conducting rubber, is configured to abut against with photosensitive drums 20.Also, as shown in Fig. 2, work as
When photosensitive drums 20 are rotated clockwise, the charged roller 26 that is contacted with the surface of photosensitive drums 20 is to the driven rotation in direction of rotation counterclockwise
Turn.At this point, by applying defined voltage to charged roller 26, make the uniformly charged of photosensitive drums 20.In addition, and charged roller
The 26 charged clearers (not shown) being in contact are with the rotation of charged roller 26, along clockwise direction driven rotation, removal attachment
Foreign matter in 26 surface of charged roller.In addition, charged roller 26 can also be configured close to photosensitive drums 20.
(structure of cleaning device 28)
Cleaning device 28 possesses：Cleaning device shell 40, in chart width direction (perpendicular to recording sheet conveying direction
Direction) there is depth；Screw rod 41 is recycled, the inside for being configured at cleaning device shell 40 on the lower, passes through the side clockwise along Fig. 2
To rotation, recycling toner is conveyed into the side to chart width direction, is arranged to waste-toner container (not shown)；Cleaning is scraped
Plate 42 is installed on the outside of cleaning device shell 40 on the lower；Sliding friction roller (clearer) 43, is configured at cleaning device shell
40 inside by the top, is contacted with the surface of photosensitive drums 20；And scraper 44, the top of sliding friction roller 43 is configured at, with cunning
The surface contact of dynamic friction roller 43.
Cleaning balde 42 is made of polyurethane rubber etc..Cleaning balde 42 with top from the rotation axis of photosensitive drums 20 on the lower
The mode abutted with the surface of photosensitive drums 20 configures.At this point, direction of rotation of the top of cleaning balde 42 compared with photosensitive drums 20
(with reference to the arrow of Fig. 2) abuts in the opposite direction.
Sliding friction roller 43 recycles useless toner, and the table by being attached to sliding friction roller 43 from the surface of photosensitive drums 20
The surface of the useless toner grinding photosensitive drums 20 in face.Therefore, sliding friction roller 43 is to maintain the retentivity of high useless toner,
The cylindrical shape along chart width direction is formed using blown rubber (for example, containing carbon conductive foaming EPDM), is configured than clear
The upstream side of the direction of rotation of photosensitive drums 20 is more leaned on the top of clean scraper plate 42.In addition, the direction of rotation of sliding friction roller 43 be with
The opposite direction in the direction of rotation of photosensitive drums 20.Scraper 44 is made using the thin-sheet metal for having ensured that durability, in order to make slip
The adhesion amount of the toner of 43 surface attachment of friction roller is uniform, and the top of scraper 44 is in the phase of the direction of rotation of sliding friction roller 43
Negative direction is abutted with the downstream of the direction of rotation of sliding friction roller 43.
(structure of charge removal device 29)
Direction of rotation of the charge removal device 29 along photosensitive drums 20, configures in the downstream of cleaning device 28.Charge removal dress
29 are put using LED (light emitting diode), and is arranged as required to reflecting plate.Charge removal device 29 is by irradiating photosensitive drums 20
Charge light (erasing light) is removed, removes that its surface institute is electrically charged, is used on charged process during next image formation action
Prepare.
(structure of control circuit 30)
Control circuit 30 forms the various control programs of processing according to the related whole image for being stored in ROM31, except
It controls outside each photosensitive drums 20, also controls development conditions, voltage, conditions of exposure and charge that bias circuit 34 applies are removed
The calibration of the erasing light quantity of device 29 etc., the development conditions are to supplement toner or to developing apparatus 21 to each developing apparatus 21
Voltage of application etc., the bias circuit are the superimposed voltages for applying DC voltage and alternating voltage to charged roller 26, the exposure
Striation part is laser energy of laser P (with reference to Fig. 1) projected from exposing unit 25 etc..
In addition, control circuit 30 drives driver 35 by motor, control makes the drive motor (driving that photosensitive drums 20 rotate
Device) 36, and according to carrying out detection of the self-test as the braking distance test section 38 of the braking distance of the photosensitive drums 20 of image carrier
Value inhibit the control of image quality decrease.Also, the count value from counter 39 is inputted to control circuit 30, it is described
Counter 39 is to form processing number to accumulative image to count.
In the present embodiment, braking distance test section 38 is mounted in the encoder in photosensitive drums 20.Use the coding
Device measures the rotary speed and braking time of photosensitive drums 20, and detects sense according to the rotary speed and braking time measured
The braking distance of light drum 20.In addition, it is necessary to detect photosensitive for the purpose of controlling the image forming position in photosensitive drums 20 exactly
The rotational angle of drum 20, in order to detect the rotational angle of photosensitive drums 20, image forming apparatus 11 is commonly provided with encoder.
ROM31 is also stored with forms the relevant control program of processing amendment with the image of the present invention, with performing the image shape
Control circuit 30 into processing control program forms microcomputer together.Also, perform picture number when image forms processing
According to etc. be temporarily stored in RAM32 or HDD33.
2. image formation order
In the following, the image formation order of image forming apparatus 11 is illustrated.When from external connections such as personal computers
During equipment input image data, first, the uniformly charged of photosensitive drums 20 is made by charged roller 26, then, by exposing unit
The table surface irradiation laser P of 25 pairs of photosensitive drums 20, so as to be formed and the corresponding electrostatic latent image of image data in each photosensitive drums 20.
The two-component developing agent (following, to be also referred to as developer) of specified amount is separately filled in developing apparatus 21, the bi-component is shown
Shadow agent includes the toner of yellow, magenta, cyan and black a variety of colors.Further, since form toner described below
As and make each developing apparatus 21 in fill two-component developing agent in toner ratio less than specified value when, from toner container
Device 19 supplements toner to each developing apparatus 21.Toner in the developer is supplied to by developing apparatus 21 in photosensitive drums 20,
By Electrostatic Absorption, toner image, the electrostatic latent image that exposure of the toner image correspondence from exposing unit 25 is formed are formed.
On the other hand, with image formed processing unit 15 in toner image formation opportunity it is corresponding, from paper feeding cassette 13 (or
The manual disk of person) supply recording sheet, alignment roller is transported to 30a by recording sheet transfer passage 16.
Also, electricity is applied with defined transfer voltage between primary transfer roller 27 and photosensitive drums 20 from primary transfer roller 27
, the toner image of yellow, cyan, magenta and black in photosensitive drums 20 is transferred to for the first time on intermediate transfer belt 22.
In order to form defined coloured image, the figure of above-mentioned four kinds of colors is formed in a manner of keeping predetermined assigned position relation
Picture.Then, in order in case the formation of the new electrostatic latent image continued, is removed by cleaning device 28 and remained after transferring for the first time
In the toner on the surface of photosensitive drums 20 etc..In addition, the residual charge on 20 surface of photosensitive drums is removed by charge removal device 29.
When intermediate transfer belt 22 starts to during the counter clockwise direction rotation of Fig. 1, in defined opportunity recording sheet from alignment roller
30a is conveyed to the second transfer section 17 being provided adjacent to intermediate transfer belt 22, the full color image quilt on intermediate transfer belt 22
It is transferred to for the second time in recording sheet.Second of recording sheet transferred with toner image is conveyed to fixing section 18.In addition, by band
The removal of cleaning device 24 is attached to residual toner on surface of intermediate transfer belt 22 etc..
The recording sheet for being transported to fixing section 18 is heated to and pressurizes, and toner image is fixed in the surface of recording sheet, shape
Into defined full color image.The recording sheet for having formed full color image is guided to the terminal part of recording sheet transfer passage 16, by arranging
Go out roller to be discharged to 30b on the paper discharge tray 12a as the upper surface of printer main body 12.
3. the surface state of photosensitive drums 20 is judged using braking distance
Hereinafter, the characteristic of the image forming apparatus 11 of the present invention is illustrated.In the structure, control electricity
Road 30 handles relevant various control program execution picture formation processing (prints according to being formed with whole image for ROM31 is stored in
Brush operation), and when carrying out image formation processing, the application voltage of bias circuit 34 is controlled, the bias circuit 34 is to band
Electric roller 26 applies the superimposed voltage of DC voltage and alternating voltage.In addition, the voltage of the flip-flop of superimposed voltage is fixation.
Fig. 3 be represent from begin to use photosensitive drums 20 accumulative image formed processing number and photosensitive drums 20 braking distance
Relation and accumulative image formed processing number and photosensitive drums 20 surface roughness Ra relation graph.In addition,
" Ra " refers to specified in version JISB0601 in 1994 " arithmetic average roughness ".
In figure 3, Loff is braking distance when not applying voltage to charged roller 26, and Lon is to apply electricity to charged roller 26
Braking distance during pressure.(it is state when beginning to use, in other words, is using initial stage in addition, Loff (0) is photosensitive drums 20
State after just dispatching from the factory.) Loff values.
As shown in figure 3, accumulative image forms the increase of processing number, Loff, Lon after beginning to use with photosensitive drums 20
It is all reduced with Ra.Since Lon is bigger than the reduction speed of Loff, with accumulative image formed processing number increase, Lon and
Loff's increases away from amplitude.Especially, add up image and form processing number between 100K (opening)~300K (opening), Lon ratios
The reduction speed of Loff is big, and Lon and Loff's also increases away from amplitude.In the present embodiment, with Loff compared with the ratio between Lon
(Loff/Lon) represent the Loff of Lon away from amplitude, if the surface of photosensitive drums 20 being smoothed when the value of Loff/Lon be
Predetermined brake distance Lc.Predetermined brake distance Lc is the constant bigger than 1, is to consider the material of photosensitive drums 20 and (start before dispatching from the factory
Before use) surface roughness, the material of cleaning balde 42 and sliding friction roller 43 etc. and it is preset, and store to HDD
In (storage part) 33.
4. inhibit the control of image quality decrease
Fig. 4 is in the image forming apparatus 11 for represent present embodiment, under the inhibition picture quality that control circuit 30 carries out
The flow chart of the control process content of drop.Additionally, there are the main program (not shown) of overall control image forming apparatus 11, Fig. 4
Shown flow is the subprogram of the main program.The control subprogram shown in Fig. 4 for inhibiting image quality decrease, forms in image
The power supply of device 11 starts when connecting.
First, control circuit 30 monitors whether to have accepted presswork (step S1).Accepting for presswork is by coming
From the input of the user of the operation panel via image forming apparatus 11 or from via the connection of the communication lines such as LAN or internet
The input of PC etc. carry out.When not accepting presswork (being "No" in step S1), control circuit 30 still continues to monitor.
When having accepted presswork (being "Yes" in step S1), Loff (steps are detected by braking distance test section 38
S2), control circuit 30 compares the Loff detected and Loff (0), judges whether to meet Loff ＜ Loff (0) (step S3).This
Outside, Loff (0) can be in advance detected and stored in HDD33 or in user most before image forming apparatus 11 dispatches from the factory
It just uses and is detected and stored during image forming apparatus 11 in HDD33.During alternatively, it is also possible to replace photosensitive drums 20 every time, detection
Loff (0) is simultaneously stored into HDD33.
When being unsatisfactory for Loff ＜ Loff (0) (being "No" in step S3), return to step S1 continues to monitor whether to have accepted print
Brush operation.When meeting Loff ＜ Loff (0) (being "Yes" in step S3), Lon (steps are detected by braking distance test section 38
S4).Also, control circuit 30 judges whether to meet Lc ＜ Loff/Lon (step S5).It is unsatisfactory for (step during Lc ＜ Loff/Lon
It is "No" in S5), return to step S1 continues to monitor whether to have accepted presswork.
When meeting Lc ＜ Loff/Lon (in step S5 be "Yes"), control circuit 30 judge the surfaces of photosensitive drums 20 by
It smooths (step S6), carries out reducing frictional resistance processing (step S7).Have as the method for reducing frictional resistance processing：When clear
When clean device 28 cleans 20 surface of photosensitive drums, increase as the toner for being supplied to 20 surface of photosensitive drums of lubricant and addition
The amount of agent；And reduce alternating voltage applied by bias circuit 34 to charged roller 26 etc..
Then, return to step S1, control circuit 30 monitor whether to have accepted presswork, repeats same order below
(step S1~S5).In addition, in the flow of Fig. 4, step S1~step S6 can also be interpreted as to photosensitive drums (image carrier) table
Face smooths determination processing.
The quantity delivered of toner and additive during by increasing cleaning 20 surface of photosensitive drums of cleaning device 28, can drop
The frictional resistance of low cleaning scraper plate 42 and photosensitive drums 20.In addition, by reducing the electrified voltage being applied in charged roller 26, it can
Inhibit the generation of discharging product and inhibit the discharging product generated to photosensitive layer attachment, institute is so as to inhibit 42 He of cleaning balde
The rising of the frictional resistance of photosensitive drums 20.
As a result, it is possible to reduce the chatter of cleaning balde 42, the defect (abrasion) of marginal portion and the hair of stick slip
It is raw.Alternatively, it is also possible to easily remove toner and additive when expecting and being cleaned by cleaning balde 42 and reduce from photosensitive
The effect of the amount of the additive leaked out between the surface of drum 20 and cleaning balde 42.
In addition, as in this embodiment, by judging whether to meet Lc ＜ Loff/Lon, and judge whether to meet Loff
＜ Loff (0), the use initial stage not yet planarized on the surface of photosensitive drums can prevent from making Lc ＜ due to certain factor
Mistakenly judge that photosensitive drum surface has been flattened when Loff/Lon is temporarily set up.
As described above, image forming apparatus 11 in the embodiment, is sentenced by the braking distance of photosensitive drums 20
The surface (photosensitive layer surface) of disconnected photosensitive drums (image carrier) 20 whether being smoothed.Also, when meet Loff ＜ Loff (0) and
During the relation of Lc ＜ Loff/Lon, surface being smoothed of photosensitive drums 20 is judged.Thereby, it is possible to which new device need not be equipped with,
With regard to that can judge the surfaces of photosensitive drums 20 whether being smoothed, help to reduce cost.In addition, when the surface for judging photosensitive drums 20
During being smoothed, carry out reducing frictional resistance processing, reduce the frictional resistance on the surface of cleaning balde 42 and photosensitive drums 20, energy
Enough reduce chatter, defect and the generation of stick slip of cleaning balde 42.Thereby, it is possible to leaking out for suppressant additive, and press down
Imaged quality declines.
＜ variations ＞
More than, the image forming apparatus 11 of the present invention is illustrated by taking embodiment as an example, but the present invention does not limit
In the embodiment, for example, it can be following variations.Alternatively, it is also possible to combine embodiment and variation or group
Close each variation.In addition, the present invention includes the embodiment do not recorded in embodiment or the scope for not departing from idea of the invention
Interior design alteration.
(variation 1) in said embodiment, braking distance test section 38 is encoder, in photosensitive drums 20,
Detect the braking distance of photosensitive drums 20.But it's not limited to that, for example, when drive motor 36 and the rotation of photosensitive drums 20 are complete
During full linkage, encoder can also be mounted in drive motor 36, the braking distance of drive motor 36 be detected, with what is detected
The braking distance of drive motor 36 substitutes the braking distance of photosensitive drums 20.
The method of the braking distance of (variation 2) detection photosensitive drums 20 is not limited to by encoder detection photosensitive drums 20
Rotational angle or the rotational angle for detecting drive motor 36.For example, it can be braking distance test sections 38 to detect photosensitive drums
20 rotary speed and braking time, and according to the rotary speed and braking time of detection, calculated braking distance.
(variation 3) predetermined brake distance Lc is not limited to preset and store in HDD33, for example, it is also possible to root
According to the value of the factor for the flatness for using Loff the and Lon values detected during beginning, 20 surface of other influences photosensitive drums, using
It calculates and is stored in HDD33 after beginning.
The storage part that (variation 4) is stored with predetermined brake distance Lc is not limited to HDD33.It is preset before dispatching from the factory
During predetermined brake distance Lc, ROM31 is stored in.At this point, ROM31 becomes storage part.
(variation 5) reduces the processing that frictional resistance processing is not limited to increase the quantity delivered of toner and additive
With the processing for reducing electrified voltage.For example, the throw-on pressure that cleaning balde 42 is pressed onto to photosensitive drum surface can be reduced, can also mend
Fill the lubricant outside toner and additive.In addition, it is necessary to select that image formation will not be handled in the case of the latter
The lubricant having a negative impact.
The present invention can be used in the image forming apparatus for possessing the image carrier for being formed on its surface toner image.By using
The present invention, being capable of providing a kind of need not set new testing agency, can just detect image carrier using the braking distance of image carrier
Surface smoothing degree image forming apparatus.
Claims (8)
1. a kind of image forming apparatus, including：
Image carrier is formed on its surface toner image；
Driving device drives the image carrier to rotate；
Charging member makes the image carrier charged；
Cleaning member contiguously configures with the surface of the image carrier, cleans the surface of the image carrier；
Voltage application device applies electrified voltage to the charging member；
Braking distance test section detects the braking distance of the image carrier；
Storage part, it is the braking distance with the image carrier to have stored predetermined brake distance Lc, the predetermined brake distance Lc
The relevant constant bigger than 1；And
Control unit according to the braking distance of the image carrier detected by the braking distance test section, judges the image carrier
Surface state,
Described image forming apparatus is characterized in that,
The control unit obtains the braking distance during application electrified voltage by braking distance test section detection
Lon and braking distance Loff when not applying the electrified voltage, and set and do not apply when beginning to use the image carrier
The braking distance during electrified voltage is Loff (0), in the case where meeting following relations, judges the image carrier table
Face being smoothed,
Loff ＜ Loff (0) and Lc ＜ Loff/Lon.
2. image forming apparatus according to claim 1, which is characterized in that
The control unit judge the image carrier surface being smoothed when, carry out reducing frictional resistance processing, reduce the picture
Frictional resistance between the surface of carrier and the cleaning member.
3. image forming apparatus according to claim 2, which is characterized in that
Further include developing apparatus, the developing apparatus is attached to the toner comprising polishing particles to be formed in the image carrier
Latent electrostatic image developing is toner image by the electrostatic latent image on surface,
The control unit carries out institute by the way that in non-image forming, toner is provided from the developing apparatus to the image carrier
It states and reduces frictional resistance processing.
4. image forming apparatus according to claim 3, which is characterized in that
Smoothing degree with the surface of the image carrier increases, and the control unit makes from the developing apparatus to described as carrying
The toner amount of body supply increases.
5. image forming apparatus according to claim 2, which is characterized in that
The voltage application device applies the electrified voltage to the charging member, and the electrified voltage is DC voltage and friendship
Stream voltage superposition forms,
The control unit is by making the exchange that the voltage application device applies the charging member when image is formed
Voltage reduces, and carries out the reduction frictional resistance processing.
6. image forming apparatus according to claim 5, which is characterized in that
The charging member is configured to touch or proximate to the surface of the image carrier.
7. the image forming apparatus according to any one in claim 1~6, which is characterized in that
The braking distance test section is the encoder for the rotational angle for detecting the image carrier.
8. the image forming apparatus according to any one in claim 1~6, which is characterized in that
The surface of the image carrier is formed with amorphous silicon photosensitive layer.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015091485 | 2015-04-28 | ||
| JP2015-091485 | 2015-04-28 | ||
| JP2016-056416 | 2016-03-22 | ||
| JP2016056416A JP6414110B2 (en) | 2015-04-28 | 2016-03-22 | Image forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106094456A CN106094456A (en) | 2016-11-09 |
| CN106094456B true CN106094456B (en) | 2018-05-29 |
Family
ID=57551692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610192718.4A Expired - Fee Related CN106094456B (en) | 2015-04-28 | 2016-03-30 | Image forming apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6414110B2 (en) |
| CN (1) | CN106094456B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6406295B2 (en) * | 2015-04-28 | 2018-10-17 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6180300B1 (en) * | 1995-03-03 | 2001-01-30 | Sharp Kabushiki Kaisha | Photosensitive body for electrophotographical use and manufacturing method thereof |
| JP3743288B2 (en) * | 1998-05-13 | 2006-02-08 | ダイキン工業株式会社 | Melt extrusion material for transfer layer of image forming apparatus |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03211568A (en) * | 1990-01-17 | 1991-09-17 | Konica Corp | Color image forming device |
| JPH11265097A (en) * | 1998-03-17 | 1999-09-28 | Toshiba Corp | Method and device for image forming |
| JP3461444B2 (en) * | 1998-06-15 | 2003-10-27 | シャープ株式会社 | Image forming device |
| US6351622B1 (en) * | 2000-07-27 | 2002-02-26 | Toshiba Tec Kabushiki Kaisha | Image forming apparatus and image forming method using an improved drive and control system |
| US20020114906A1 (en) * | 2000-11-20 | 2002-08-22 | Bridgestone Corporation | Base body for photosensitive drum and photosensitive drum using the same |
| JP2003215890A (en) * | 2002-01-23 | 2003-07-30 | Fuji Xerox Co Ltd | Image forming device |
| JP2003241602A (en) * | 2002-02-15 | 2003-08-29 | Canon Inc | Image forming device |
| JP2006259176A (en) * | 2005-03-16 | 2006-09-28 | Ricoh Co Ltd | Image forming apparatus |
| JP2007010947A (en) * | 2005-06-30 | 2007-01-18 | Kyocera Mita Corp | Color image forming apparatus |
| JP2008134393A (en) * | 2006-11-28 | 2008-06-12 | Konica Minolta Business Technologies Inc | Image forming apparatus |
| JP5437611B2 (en) * | 2008-09-02 | 2014-03-12 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
| JP5294899B2 (en) * | 2009-01-22 | 2013-09-18 | キヤノン株式会社 | Image forming apparatus |
-
2016
- 2016-03-22 JP JP2016056416A patent/JP6414110B2/en not_active Expired - Fee Related
- 2016-03-30 CN CN201610192718.4A patent/CN106094456B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6180300B1 (en) * | 1995-03-03 | 2001-01-30 | Sharp Kabushiki Kaisha | Photosensitive body for electrophotographical use and manufacturing method thereof |
| JP3743288B2 (en) * | 1998-05-13 | 2006-02-08 | ダイキン工業株式会社 | Melt extrusion material for transfer layer of image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106094456A (en) | 2016-11-09 |
| JP6414110B2 (en) | 2018-10-31 |
| JP2016212385A (en) | 2016-12-15 |
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