CN2771905Y - Image forming apparatus - Google Patents

Abstract

The utility model provides an image forming apparatus, wherein the developing solution with toner concentration is used for developing the latent image on the supporting body of the latent image, and the toner concentration has the weight percentage which is about 5-40, therefore a toner image is formed. Furthermore, the toner image is transferred and printed on the transfer medium. The utility model is characterized in that the image forming apparatus comprises a light sensor, which has relative configuration with the supporting body of the developing latent image, and the light sensor comprises a luminous part and a light detection part, wherein the luminous part illuminates towards the toner image formed on the supporting body of the latent image, and the toner image serves as a patch image; the light detection part is used for detecting the light from the patch image. The utility model also comprises a controlling part which is electrically coupled with the light sensor, and on the basis of the light detection signals from the light detection part, the controlling part controls the image forming condition, which influences the concentration of the toner image.

Description

Image processing system

Technical field

The utility model relates to the definition technique of electrofax modes such as printer, duplicating machine or facsimile unit, and particularly visualization way adopts the definition technique of the electrofax mode of wet developing.

Background technology

In the past, the image processing system of following electrofax mode is practical: charged photoreceptor is exposed and form electrostatic latent image on this photoreceptor with exposure component, toner is attached on the photoreceptor and electrostatic latent image developed with developing parts to form the toner picture, this toner is looked like to be transferred on the offset medium.Here, the visualization way of developing parts is known the wet developing mode, and its uses the developer solution that toner is distributed to gained in the liquid-carrier.This wet developing mode has the following advantages: the mean grain size of toner is little of 0.1～2 μ m, so can obtain high-resolution image; Since be liquid, thus mobile high, therefore can obtain uniform image etc.

As everyone knows, in this image processing system, change picture qualities such as can controlling image color by making image forming conditions, wherein, described image forming conditions is made up of the bias voltage and the various factors that apply to the device each several part.Simultaneously, owing to the individual difference of device, through the time change or the reasons such as variation of the surrounding environment of device such as temperature humidity, the image color of toner picture is different sometimes.So, now proposed by the image forming conditions adjustment that influences image color in the above-mentioned key element being controlled the concentration control technology of image color.The device described in the Japanese patent laid-open 8-292622 communique for example, form the patch image of test usefulness, to this patch image irradiates light, detection is from the light of this patch image reflection, thereby detect the image color of patch image, and control the image forming conditions such as toner concentration of the surface potential or the developer solution of photoreceptor based on this testing result.

Therefore, in existing image processing system, use the lower developer solution of toner concentration, yet, in recent years, because some are former thereby use toner concentration than higher developer solution.Its reason is as follows, promptly when toner concentration is low, needs a large amount of developer solutions in order to ensure obtaining sufficient toning dosage, be difficult to make equipment miniaturization, and, for the volatile solvent that prevents to be often used as liquid-carrier to the device external leakage, it is complicated that apparatus structure also becomes.In addition, if the concentration of developer solution is uprised, then its viscosity also uprises.So, for in Japanese patent laid-open 8-292622 communique, put down in writing, its prerequisite is to use the concentration control technology of the lower developer solution of toner concentration, be difficult to be applicable to use toner concentration than higher and be the image processing system of high viscosity developer solution.

The utility model content

The utility model carries out in view of the above problems, its objective is: a kind of image processing system is provided, wherein, use high concentration, full-bodied developer solution the sub-image on the sub-image supporting body to be developed form the toner picture, afterwards, this toner is looked like to be transferred on the offset medium, thereby stably form the second best in quality toner picture.

In order to reach above-mentioned purpose, image processing system of the present utility model, use toner-particle to be dispersed in the liquid-carrier, the developer solution that the concentration of toner is approximately 5～40 percentage by weights sub-image on the sub-image supporting body that develops, thereby form the toner picture, afterwards, look like this toner to be transferred on the offset medium, it is characterized in that, this image processing system comprises: optical sensor, with relative configuration of described development sub-image supporting body, comprise luminous component and optical detection part branch, wherein, described luminous component on described sub-image supporting body, form as the toner of patch image as irradiates light, described optical detection part divides the light that detects from described patch image; And control assembly, with described optical sensor electric coupling,, control as the image forming conditions of concentration influencing toner based on the light detecting signal that divides from described optical detection part.

According to this structure, to on the sub-image supporting body, form as the toner of patch image as irradiates light, detection is from the light of described patch image, and based on the light detecting signal that divides from described optical detection part, controls as the image forming conditions of concentration influencing toner.

Yet, in toner-particle is dispersed in developer solution in the liquid-carrier, on the sub-image supporting body, toner-particle is formed lower floor attached to the surface of sub-image supporting body by sub-image current potential (compared potential), on this top layer, form the liquid-carrier layer.Same, on offset medium, toner-particle is formed lower floor attached to the surface of offset medium by transfer bias, on this top layer, form the liquid-carrier layer.So nearly all toner-particle all is transferred on the offset medium, and for liquid-carrier, its part is stayed on the sub-image supporting body, and nubbin is transferred on the offset medium.So, when the toner picture when the sub-image supporting body is transferred on the offset medium, before and after transfer printing, the liquid-carrier amount that contains in the developer solution reduces, on the other hand, the toning dosage that contains in the developer solution does not almost change.As a result, toner concentration is approximately the high concentration of 5～40 percentage by weights, full-bodied developer solution owing to its concentration of reason, the viscosity of transfer printing toner picture become more and more higher.

The surface that is carried on the developer solution on the sub-image supporting body etc. is when viscosity ratio is low, because its capillary effect is thought level and smooth.Specific viscosity is low mutually for patch image on the developer solution that forms the patch image on the sub-image supporting body and the offset medium, and the liquid-carrier amount that it contains is many.So, the surface that forms the developer solution of the patch image on the sub-image supporting body compare with the patch image on the offset medium concavo-convex less, level and smooth substantially.As a result, during patch image irradiates light on the sub-image supporting body, the refractive direction of the lip-deep light of developer solution is almost certain, does not compare with the patch image on the offset medium and can produce the at random of refractive direction.

So, in the said structure of the patch image irradiates light on the sub-image supporting body, because can stably obtain light detecting signal, so can control image forming conditions aptly.So, can stably obtain the second best in quality toner picture.

In addition, because in the patch image that on described sub-image supporting body, forms, adopted the average thickness structure thicker of liquid-carrier layer than the average thickness of toner-particle layer, so at the liquid-carrier layer that can guarantee on the top layer of this toner-particle layer to have more than the thickness of this toner-particle layer, thus, can make the surface of the developer solution that forms the patch image keep level and smooth substantially.As a result, can make refractive direction almost keep certain at the lip-deep light of developer solution that forms the patch image.Here, the average thickness of toner-particle layer equals the density of the mass area ratio of the toner on the sub-image supporting body divided by toner-particle.The average thickness of liquid-carrier layer equals the density of the mass area ratio of the liquid-carrier on the sub-image supporting body divided by liquid-carrier.

And, described optical detection part divide adopted detect by described luminous component irradiation, on described patch image the structure of the normal reflection light of normal reflection, so there is very cataclysm in the detection light quantity of normal reflection light according to the refractive direction on the developer solution surface that forms the patch image at random.But, as mentioned above because form the developer solution surface of the patch image on the sub-image supporting body, be transferred to offset medium on the patch image compare concavo-convex less, level and smooth substantially, so the refractive direction of the lip-deep light of developer solution is almost certain.So, can stably obtain the light detecting signal that optical detection part divides.

In addition, to achieve these goals, the feature of image processing system of the present utility model is to comprise: the sub-image supporting body has the structure that can carry sub-image in its surface; The developer solution supporting body, with described sub-image supporting body in abutting connection with configuration, toner is distributed to developer solution carrying in the liquid-carrier, that toner concentration is approximately 5～40 percentage by weights in its surface, and be transferred on the developing location relative with described sub-image supporting body, provide described developer solution by on this developing location, making described developer solution contact described sub-image supporting body to described sub-image supporting body; Picture forms parts, be connected with described developer solution supporting body, and apply the development bias voltage to it, thus make from the toner of described developer solution supporting body to the developer solution that described sub-image supporting body provides attached on the described sub-image supporting body, thus the described sub-image that develops forms the toner picture; Offset medium, with described sub-image supporting body in abutting connection with configuration; Transfer member is connected with described offset medium, and applies transfer bias to it, thereby looks like the toner on the described sub-image supporting body to be transferred on the offset medium on the position of regulation; Optical sensor, dispose relative with described offset medium comprises luminous component and optical detection part branch, wherein, described luminous component to be transferred on the described offset medium as the toner of patch image as irradiates light, described optical detection part divides the light that detects from described patch image; And control assembly, with described optical sensor electric coupling,, control as the image forming conditions of concentration influencing toner based on the light detecting signal that divides from described optical detection part.

According to this structure, to as the toner of the patch image on the offset medium as irradiates light, detect light, and, control as the image forming conditions of concentration influencing toner based on this light detecting signal from described patch image.

Yet, be distributed in the liquid-carrier and in the developer solution that forms at toner-particle, on the sub-image supporting body, toner-particle is formed lower floor attached to the surface of sub-image supporting body by sub-image current potential (compared potential), on this top layer, form the liquid-carrier layer.Same, on offset medium, toner-particle is formed lower floor attached to the surface of offset medium by transfer bias, on this top layer, form the liquid-carrier layer.So nearly all toner-particle all is transferred on the offset medium, and for liquid-carrier, one partially liq carrier is stayed on the sub-image supporting body, and nubbin is transferred on the offset medium.So, when the toner picture when the sub-image supporting body is transferred on the offset medium, before and after transfer printing, the liquid-carrier amount that is contained in the developer solution reduces.

Provide developer solution by making the developer solution that carried on the developer solution supporting body on developing location, contact to finish to the sub-image supporting body from the developer solution supporting body with the sub-image supporting body.Then, make the surface of toner, form toner picture (video picture) attached to the sub-image supporting body by in its contact process, applying the sub-image current potential.Then, for the developer solution that all contacts with developer solution supporting body and sub-image supporting body both sides, be separated into and be attached on the developer solution supporting body and the developer solution that left behind and move to developer solution on the sub-image supporting body.

In addition, finish from of the toner transfer printing of developer solution supporting body by the developer solution that carried on the developer solution supporting body is contacted with offset medium on developing location, make the surface of toner attached to offset medium by in its contact process, applying transfer bias to offset medium.Then, for the developer solution that all contacts with sub-image supporting body and offset medium both sides, be separated into and be attached on the sub-image supporting body and the developer solution that left behind and move to developer solution on the offset medium.

In these cases, when developer solution for example is that toner concentration is when being approximately the such high viscosity developer solution of the developer solution of 5～40 percentage by weights, developer solution is from beginning to separate with developer solution supporting body and sub-image supporting body both sides state of contact, at this moment, be not easy to separate and produce the wire drawing phenomenon, separate after promptly for the moment being the wire drawing state.If produced this wire drawing phenomenon, then can not be reduced to original smooth state because developer solution viscosity is high, the part of pulling out silk is protruded and is formed concavo-convex developer solution surface.

When the liquid-carrier amount is many, be easy to generate this wire drawing phenomenon, and the size of the protrusion during generation is very big.That is, on developing location, when developer solution is separated to developer solution supporting body and sub-image supporting body,, be easy to produce the wire drawing phenomenon because the liquid-carrier amount is many.So the surface that forms the developer solution of the patch image on the sub-image supporting body is easy to form concavo-convex.

Relative with it, on transfer position, when developer solution was separated on sub-image supporting body and the offset medium, because compare with developing location, the amount of liquid-carrier was few, so be difficult to produce the wire drawing phenomenon.So, form the developer solution surface of the patch image on the offset medium, compare with the patch image on the sub-image supporting body concavo-convex less, roughly level and smooth.As a result, when the patch figure irradiates light on offset medium, the refractive direction of the lip-deep light of developer solution is almost certain, does not compare with the patch image on the sub-image supporting body and can produce the at random of refractive direction.

So, in the said structure of the patch image irradiates light on offset medium, because can access stable light detecting signal, so can control image forming conditions aptly.So, can stably obtain the second best in quality toner picture.

And, described optical detection part divide adopted detect by described luminous component irradiation, by the structure of the normal reflection light of described patch image normal reflection, so there is very big change in the detection light quantity of normal reflection light according to the refractive direction on the developer solution surface that forms the patch image at random.But, as mentioned above because form the developer solution surface of the patch image on the sub-image supporting body, be transferred to offset medium on the patch image compare concavo-convex less, level and smooth substantially, so the refractive direction of the lip-deep light of developer solution is almost certain.So, can stably obtain the light detecting signal that optical detection part divides.

And, the preferred 5～3000mPas of the viscosity of described liquid-carrier.Because if viscosity is greatly more than 3000mPas, viscosity is too high, then be easy to produce the wire drawing phenomenon, on the other hand, if viscosity is greatly below 5mPas, then because the volatility height of liquid-carrier, so, be necessary to be arranged for and prevent that liquid-carrier to the structure of installing external leakage, making the structure complicated of device.In addition, although the viscosity of the liquid-carrier here is approximately 5～3000mPas, the viscosity that contains the developer solution of toner also can be approximately 50～6000mPas.

Description of drawings

Fig. 1 is the printer structural representation of the utility model first embodiment.

Fig. 2 is the synoptic diagram of the patch sensor of relative configuration with photoreceptor.

Fig. 3 is the electrical structure block diagram of same printer.

Fig. 4 is the concavo-convex synoptic diagram that forms on the developer solution surface.

Fig. 5 is the key diagram of deviation of the refractive direction of the lip-deep light of developer solution.

Fig. 6 is the synoptic diagram that forms the development liquid layer of the patch image on the photoreceptor.

Fig. 7 is the process flow diagram that patch is handled routine.

Fig. 8 is the process flow diagram of print processing routine.

Fig. 9 is the printer structural representation of the utility model second embodiment.

Figure 10 is the synoptic diagram of the patch sensor of relative configuration with intermediate transfer rollers.

Figure 11 is the electrical structure block diagram of same printer.

Figure 12 is a wire drawing phenomenon key diagram.

Figure 13 is the concavo-convex synoptic diagram that forms on the developer solution surface.

Figure 14 is the key diagram of deviation of the refractive direction of the lip-deep light of developer solution.

Figure 15 is from the transfer printing view of photoreceptor to the patch image of intermediate transfer rollers.

Figure 16 is the development liquid layer synoptic diagram that forms the patch image on the intermediate transfer rollers.

Figure 17 is the process flow diagram that patch is handled routine.

Figure 18 is the process flow diagram of print processing routine.

Embodiment

(first embodiment)

Fig. 1 is the printer structural representation of first embodiment of the utility model image processing system, and Fig. 2 is the synoptic diagram of the patch sensor of relative configuration with photoreceptor, and Fig. 3 is the electrical structure block diagram of same printer.This printer is to use the developer solution that comprises black (K) colour toners to form the image processing system of the wet developing mode of monochrome image, after the print command signal that will comprise picture signal from external units such as principal computers offers main control part 100, engine control section 110 is according to the each several part from the control signal Control Engine part 1 of this main control part 100, the printout image corresponding with above-mentioned picture signal on transfer paper, copy paper and dedicated paper (hereinafter referred to as " recording medium ") 4 of paper feeding box 3 transmission that set to the bottom from apparatus main body 2.

Above-mentioned engine part 1 comprises photoreceptor unit 10, exposing unit 20, developing cell 30, transfer printing unit 40 etc.In these unit, photoreceptor unit 10 comprises photoreceptor 11, live part 12, electric part 13 and cleaning part 14 disappear.In addition, developing cell 30 comprises developer roll 31 etc.Moreover transfer printing unit 40 comprises intermediate transfer rollers 41 etc.

In photoreceptor unit 10, photoreceptor 11 is configured to and can rotates freely along the direction of arrow 15 (being clockwise direction in the drawings) of Fig. 1.And, around this photoreceptor 11,, be equipped with live part 12, developer roll 31, intermediate transfer rollers 41, electric part 13 and cleaning part 14 disappear along its sense of rotation 15.In addition, the surf zone between live part 12 and the developer roll 31 becomes the irradiation area from the light beam 21 of exposing unit 20.Live part 12 is made of charging roller in the present embodiment, produce part 111 by the charging bias voltage and apply the charging bias voltage, be used for the outer surface of photoreceptor 11 is charged to equably the surface potential Vd (for example Vd=DC+600V) of regulation, so have the function of charging unit.

Shine the light beam 21 that for example forms from exposing unit 20 to the outer surface of the photoreceptor of crossing by these live part 12 uniform charging 11 by laser.Because this exposing unit 20 exposes with 21 pairs of photoreceptors 11 of light beam according to the steering order that provides from exposure control section 112, on photoreceptor 11, form the electrostatic latent image corresponding, so have the function of exposure component with picture signal.For example, from external units such as principal computers after interface 102 provides the print command signal that comprises picture signal to the CPU101 of main control part 100, CPU113 is according to the instruction from the CPU101 of main control part 100, and sequential in accordance with regulations is to the exposure control section 112 outputs control signal corresponding with picture signal.Then, according to steering order, to photoreceptor 11 illumination beams 21, on photoreceptor 11, form the electrostatic latent image corresponding with picture signal from exposing unit 20 from this exposure control section 112.In addition, when forming the patch image as required, provide the control signal of the patch picture signal of corresponding predefined compulsory figure (for example real image) to exposure control section 112, on photoreceptor 11, form electrostatic latent image that should figure from CPU113.Like this, in the present embodiment, photoreceptor 11 is equivalent to " sub-image supporting body " of the present utility model.

The electrostatic latent image of Xing Chenging is developed by the toner that the developer roll 31 from developing cell 30 provides like this.Developing cell 30 also comprises except that developer roll 31: jar 33 stores developer solution 32; Application roll 34 is drawn the developer solution 32 that stores in jars 33 and it is coated on the developer roll 31; Limiting scraper 35, the thickness of the development liquid layer on the restriction application roll 34 makes it even; Cleaning balde 36 is removed developer solution residual on the developer roll 31 after supplying with toner to photoreceptor 11; Toner concentration adjustment member 37 and storer described later 38 (Fig. 3).Developer roll 31 is along the peripheral speed rotation of the direction that is driven in photoreceptor 11 (being counter clockwise direction in Fig. 1) to equate with photoreceptor 11.Application roll 34 along the direction identical (in same figure for counterclockwise) with developer roll 31 to be about its peripheral speed of 2 times rotation.

In the present embodiment, developer solution 32 is distributed to toner and forms in the liquid-carrier, wherein, described toner by the cementing agents such as epoxy resin of coloring pigment, this coloring pigment that bonds, to toner apply the regulation electric charge charging control agent, homodisperse spreading agent of coloring pigment etc. is constituted.In the present embodiment, liquid-carrier for example uses silicone oil such as polydimethyl siloxane oil, and toner concentration is made as 5～40 percentage by weights, concentration is higher than widely used low concentration developer solution in the wet developing mode (toner concentration is 1～2 percentage by weight).Wherein, the kind of liquid-carrier is not limited to silicone oil.And the viscosity of developer solution 32 is decided by the liquid-carrier that uses and each component that constitutes toner, toner concentration etc., in the present embodiment, for example viscosity is made as 100～10000mPas, preferred 50～6000mPas is in a ratio of high viscosity with the low concentration developer solution.

Interval between photoreceptor 11 and the developer roll 31 (thickness of developing gap=development liquid layer) for example is set at 5～40 μ m in the present embodiment, and development clamp distance (distance of both circumferencial directions of development liquid layer tactility light body 11 and developer roll 31) for example is set at 5mm in the present embodiment.Under the situation of above-mentioned low concentration developer solution, in order to obtain toning dosage, need the developing gap of 100～200 μ m, compare with it, in the present embodiment of using the high concentration developer solution, can shorten developing gap.Therefore, the displacement of the toner that moves is shortened by electrophoresis, even and apply same development bias voltage and also can produce higher electric field, so can improve development efficient, develop at high speed.

Toner concentration adjustment member 37 comprises: supply jar 371 stores the higher developer solution of toner concentration than the developer solution 32 that stores in the jar 33; And supply jar 372, stored the aforesaid liquid carrier.If 373 actions of toner replenishing pump, then the high concentration developer solution is fed in the jar 33 from supply jar 371, and the toner concentration of developer solution 32 rises, on the other hand, if 374 actions of carrier replenishment pump, then liquid-carrier is fed in the jar 33 from supply jar 372, and the toner concentration of developer solution 32 descends.Pump 373,374 is driven by pump drive part 118,119.Adjust the toner concentration of the developer solution 32 in the jar 33 by the action of controlling these pumps 373,374.

In the developing cell 30 of this structure, draw the developer solution 32 that stores in the jar 33 by application roll 34, thickness by the development liquid layer on the limiting scraper 35 restriction application roll 34 makes it even, this uniform developer solution 32 is attached on the surface of developer roll 31, along with the rotation of developer roll 31 is transferred on the developing location 16 relative with photoreceptor 11.Effect by charging control agent etc., toner is positively charged for example, be applied to development bias voltage Vb (for example Vb=DC+400V) on the developer roll 31 by produce part 114 from the development bias voltage on the developing location 16, toner moves on the photoreceptor 11 from developer roll 31, and electrostatic latent image is developed.

As mentioned above, be transferred to along with the rotation of photoreceptor 11 on the primary transfer position 44 relative at the toner picture that forms on the photoreceptor 11 with intermediate transfer rollers 41.Intermediate transfer rollers 41 edges are driven in the direction (being counter clockwise direction in Fig. 1) of photoreceptor 11 to rotate with photoreceptor 11 peripheral speed about equally, when transfer bias produces part 115 and applies primary transfer bias voltage (for example DC-400V), the toner picture on the photoreceptor 11 by primary transfer on intermediate transfer rollers 41.Residual charge on the photoreceptor 11 after the primary transfer is removed by the electric part 13 that disappears that is made of LED etc., and the residual developer solution part 14 that is cleaned is removed.So in the present embodiment, intermediate transfer rollers 41 is equivalent to " offset medium " of the present utility model.

The relative secondary transfer roller 42 that disposes with it that (is the vertical lower of intermediate transfer rollers 41 in Fig. 1) on the appropriate location of intermediate transfer rollers 41, the primary transfer primary transfer toner picture on the intermediate transfer rollers 41 is along with the rotation of intermediate transfer rollers 41 is transferred on the secondary transfer printing position 45 relative with secondary transfer roller 42.On the other hand, the recording medium 4 that holds in the paper feeding box 3 is transferred on the secondary transfer printing position 45 by transmission drive part (not shown) with the transmitting synchronous of primary transfer toner picture.Then, secondary transfer roller 42 is along the peripheral speed rotation of the direction that is driven in intermediate transfer rollers 41 (being clockwise direction in Fig. 1) to equate with intermediate transfer rollers 41, from transfer bias generating unit 115 apply the secondary transfer printing bias voltage (for example under constant current control for-100mA) time, the toner picture on the intermediate transfer rollers 41 by secondary transfer printing to recording medium 4.Residual developer solution on the intermediate transfer rollers 41 behind the secondary transfer printing is removed by cleaning part 43.Like this secondary transfer printing the recording medium 4 of toner picture be transmitted along the transfer paper transmission path 5 (in Fig. 1, being dot-and-dash line) of regulation, look like to carry out photographic fixing by 6 pairs of toners of fixation unit, be discharged in the set paper delivery pallet in the top of apparatus main body 2.In addition, on the end face of apparatus main body 2, for example be equipped with the operation display panel 7 that constitutes by LCD and touch-screen, be used to accept user's operation indication, and show that the information of regulation is notified to the user.

In addition, patch sensor 17 and photoreceptor 11 relative being configured between photoreceptor 11 developer roll 31 and intermediate transfer rollers 41 on every side.As shown in Figures 2 and 3, this patch sensor 17 is reflection type optical sensors, comprising: for example luminous component 171 that is made of LED and the optical detection part that for example is made of light emitting diode divide 172.As shown in Figure 2, the formed tiltangle 1 of the optical axis of luminous component 171 and photoreceptor 11 normals to a surface and optical detection part divide 172 optical axis and the formed tiltangle 1 of photoreceptor 11 normals to a surface to equate, luminous component 171 and optical detection part divide 172 bottoms that are configured in the pore that wears along its optical axis respectively.By this structure, come from the patch image normal reflection of irradiates light on photoreceptor 11 of luminous component 171, the normal reflection light of its reflection divides 172 to detect by optical detection part.As shown in Figure 3, the luminous component 171 of patch sensor 17 and optical detection part divide 172 respectively with the CPU113 electric coupling, thereby luminous component 171 is based on the control signal action from CPU113, to patch image 18 (Fig. 4) irradiates light that on photoreceptor 11, forms, optical detection part divides 172 to detect this normal reflection light, transmits the light detecting signal of correspondence image concentration to CPU113.So in this embodiment, patch sensor 17 is equivalent to " optical sensor " of the present utility model.

In Fig. 3, main control part 100 comprises video memory 103, be used to store the picture signal that provides from external unit through interface 102, CPU101 is after interface 102 receives the print command signal that comprises picture signal from external unit, it is transformed to the work data that is fit to indication engine part 1 action form, delivers to engine control section 110.The storer 116 of engine control section 110 is made of ROM and RAM etc., and wherein, described ROM storage comprises the control program of the CPU113 of predefined fixed data, the control data of the temporary transient storage engines part 1 of described RAM and the operation result of CPU113 etc.CPU113 is saved in the data of sending here from external unit through CPU101 relevant with picture signal the storer 116.

The storer 38 of developing cell 30 is used to store and relevant data such as the manufacturing of this developing cell 30 batch, the surplus of using historical, as to include toner characteristic, developer solution 32 or toner concentration.This storer 38 is electrically connected with communications portion 39, and communications portion 39 for example is installed on the jar 33.After developing cell 30 is installed on the apparatus main body 2, the communications portion 117 of communications portion 39 and engine control part 110 at predetermined distance with interior, for example 10mm with interior relative configuration, thereby can be by radio communications such as infrared ray transmitting and receiving data under contactless state mutually.Thus, carry out the various management of information such as consumables management relevant by CPU113 with developing cell 30.Wherein, using electromagnetic means such as radio communication to carry out data non-contactly in the present embodiment sends and receives, but also can for example on apparatus main body 2 and developing cell 30, connector be set respectively, after on the apparatus main body 2 developing cell 30 being installed, carrying out data mutually by the cooperation of two connector machinery and send reception.In addition, storer 38 is nonvolatile memory preferably, even also can preserve its data under the state that dump state or developing cell 30 are removed from apparatus main body 2, this nonvolatile memory for example can use EEPROM such as flash memories or strong dielectric memory etc.

Here, on the sub-image supporting bodies such as photoreceptor or the surface configuration of the developer solution that is being carried on the offset medium such as intermediate transfer rollers describe.Fig. 4 is a formed concavo-convex synoptic diagram on the developer solution surface.Fig. 5 is the deviation key diagram at the refractive direction of the lip-deep light of developer solution.

Be distributed to liquid-carrier and in the developer solution that forms, on the sub-image supporting body, make toner-particle form lower floor at toner-particle, on this top layer, form the liquid-carrier layer attached to the surface of sub-image supporting body by sub-image current potential (compared potential).Equally, on offset medium, with the surface formation lower floor of toner-particle, on this top layer, formed the liquid-carrier layer attached to offset medium by transfer bias.So nearly all toner-particle all is transferred on the offset medium, and for liquid-carrier, its part is stayed on the sub-image supporting body, and nubbin is transferred on the offset medium.So, when the toner picture when the sub-image supporting body is transferred on the offset medium, before and after transfer printing, the liquid-carrier amount that is contained in the developer solution reduces, the toning dosage that contains in the developer solution does not then almost change.Consequently, toner concentration is approximately the high concentration of 5～40 percentage by weights, full-bodied developer solution owing to its viscosity of reason, the concentration of transfer printing toner picture become more and more higher.

When viscosity ratio is low, because capillary effect, think that the surface that is carried on the developer solution on the sub-image supporting body etc. is level and smooth.But, for example, as shown in Figure 4, along with the amount of liquid-carrier 321 reduces, the layer attenuation of the liquid-carrier 321 on top layer, developer solution 32 becomes high viscosity simultaneously, has formed toner-particle 322 shapes concavo-convex of corresponding solid constituent on the surface of developer solution 32.That is, formation is concavo-convex, no longer level and smooth on the developer solution surface that forms the patch image on the offset medium.If on the surface of the developer solution that forms the patch image, form concavo-convex, for example, as shown in Figure 5, then when when these patch image 323 irradiates lights (being arrow among the figure), corresponding its concaveconvex shape is at random fully at the refractive direction (being dotted line among the figure) of the lip-deep light of developer solution 32.If the refractive direction of this light is at random, then can not obtain stable light detecting signal by the optical detection part branch.

Relative with it, specific viscosity is low mutually for the patch image on the developer solution that forms the patch image on the sub-image supporting body and the offset medium, and the liquid-carrier amount that it contained is also many.So, the developer solution surface that forms the patch image on the sub-image supporting body compare with the patch image on the offset medium concavo-convex less, level and smooth substantially.As a result, when the patch image irradiates light on the sub-image supporting body, the refractive direction of the lip-deep light of developer solution is almost certain, compares hardly with the patch image on the offset medium and can produce the at random of refractive direction.

Fig. 6 is the development liquid layer synoptic diagram that forms the patch image on the photoreceptor in the present embodiment.The forming process of patch image 18 is except not being based on from the print command signal of external device (ED) but be set with in advance the image graphics, other with common toner as.That is, the developer solution 32 that is dispersed in the liquid-carrier 321 of toner-particle 322 is transferred to developing location 16 in developer roll 31 surface bears.On the other hand, with photoreceptor 11 an even areas Vd that powers on, the light beam 21 by exposing unit 20 exposes and makes in the zone that toner-particle 322 has been neutralized attached to electric charge by live part 12.In the present embodiment, because patch image 18 is as real image, so as shown in Figure 6, toner-particle 322 gathers and form real image on photoreceptor 11.

In same figure, the average thickness t1 that is located on the photoreceptor 11 32 layers of developer solutions in the patch image 18 that forms approximately is the twice of the average thickness t2 of 322 layers of toner-particles.Promptly

t1≈2×t2

Be deformed into

(t1-t2)≈t2

Wherein, the average thickness (t1-t2) of 321 layers of liquid-carriers equals the density of the mass area ratio of the liquid-carrier 321 on the photoreceptor 11 divided by liquid-carrier 321.And the average thickness t2 that toner-particle is 322 layers equals the density of the mass area ratio of the toner-particle 322 on the photoreceptor 11 divided by toner-particle 322.Come the above-mentioned thickness of limit setting by limiting scraper 35, the thickness of the development liquid layer on the application roll 34, above-mentioned developing gap and above-mentioned development clamp distance etc. are adjusted.

Fig. 7 is the patch Flame Image Process routine process flow diagram of first embodiment.In the storer 116 of engine control section 110, store the control program that the 1st patch is handled.Then, CPU113 carries out following patch and handles according to this presetting apparatus each several part.At first, form patch image 18 (#10) on photoreceptor 11, to patch image 18 irradiates lights (#12), input comes from the catoptrical optical detection part that detects patch image 18 and divides 172 light detecting signal (#14) in CPU113 from luminous component 171.Then, whether the light detecting signal of judging input is in preestablishing allowed band (#16), if in allowed band (in #16 for being), then stop this routine, if not in allowed band (being not in #16), then by the control image forming conditions and the image forming conditions (#18) of coming in the image forming conditions write store 116 after this control to be stored in the updated stored device 116.

Below, example to the control image forming conditions describes, in step #16, if optical detection part divides 172 light detecting signal to exceed allowed band, then because patch image 18 concentration deficiencies, and for example reduce surface potential Vd, increase exposure energy, increase development bias voltage Vb, increase the toner concentration in the jar 33.On the other hand, if optical detection part divides 172 light detecting signal not reach allowed band, described each conditioned reflex is changed.

In addition, the image forming conditions of control can write in the storer 38 of developing cell 30 like this.Then, by suitable sequential, for example can the image forming conditions in the storer 38 be written in the storer 116 by the reception sequential of print command signal.So in this embodiment, CPU113 is equivalent to " control assembly " of the present utility model.

Fig. 8 is the process flow diagram of print processing routine.Make from after the input of the print command signal of external device (ED) by main control part 100, at first, image forming conditions such as the charging bias voltage Vd of storage in the storer 116, exposure energy, development bias voltage Vb are set (#20).Then, implement print processing (#22) according to the image forming conditions of this setting.So, because print action, so can form high-quality image according to handle the image forming conditions of controlling by patch.

So, in the present embodiment, because on photoreceptor 11, form patch image 18, thus can make the surface of the developer solution 32 that forms patch image 18 level and smooth substantially, the result is not at random and almost certain at the refractive direction of the lip-deep light of this developer solution 32.On the other hand, because optical detection part divide 172 detect by 18 normal reflections of patch image, by the normal reflection light of the light of luminous component 171 irradiations, so there is very cataclysm in the detection light quantity of normal reflection light according to the refractive direction on the developer solution surface that forms patch image 18 at random.But, in the present embodiment, almost keep certain because the refractive direction of the light on developer solution 32 surfaces of formation patch image 18 is not at random, so, optical detection part divide 172 can detect exactly by luminous component 171 irradiation, from the normal reflection light of patch image 18, so, divide 172 can obtain stable light detecting signal by optical detection part.Thereby, based on the light detecting signal that divides 172 from optical detection part image forming conditions is controlled, can be set only image forming conditions, so, corresponding to by through the time worsen to wait the variation of the unit state that causes, can form high-quality image usually.

And, in the present embodiment, because establish the twice that the average thickness t1 of 32 layers of developer solutions approximately is the average thickness t2 of 322 layers of toner-particles, so top layer 322 layers of toner-particles, can guarantee to have 321 layers of the liquid-carriers of these toner-particle 322 layer thicknesses, thus, can make the surface of the developer solution 32 that forms patch image 18 keep level and smooth substantially.

In addition, the utility model has more than and is confined to above-mentioned embodiment, do not breaking away from the scope of above-mentioned purport and can append various distortion above-mentioned embodiment, for example, in the above-described first embodiment, comprise intermediate transfer rollers 41, the toner picture of photoreceptor 11 is after once being transferred on the intermediate transfer rollers 41 on the primary transfer position 44, on secondary transfer printing position 45 by secondary transfer roller 42 and secondary transfer printing to recording medium 4, be confined to this but have more than, for example, also can adopt the middle Z transfer roll 41 of omission, secondary transfer roller 42 is configured on the primary transfer position 44, the toner picture of photoreceptor 11 directly is transferred to structure on the recording medium 4.In this mode, recording medium 4 is equivalent to offset medium.

And the average thickness t1 that developer solution is 32 layers also can surpass the twice of the average thickness t2 of 322 layers of toner-particles.That is, also can make t1＞2 * t2.In this mode, because (t1-t2)＞t2, so, on the top layer of 322 layers of toner-particles, can guarantee to have the liquid-carrier layer 321 that its thickness surpasses these toner-particle 322 layer thicknesses, so, can make the surface of developer solution 32 keep level and smooth substantially.

(second embodiment)

Fig. 9 is the inner structure synoptic diagram of second embodiment of the utility model image processing system, and Figure 10 is the patch sensor synoptic diagram of relative configuration with intermediate transfer rollers, and Figure 11 is the electrical structure block diagram of same printer.In this second embodiment, except comprise be used for replacing with the patch sensor 17 of photoreceptor 11 relative configurations, with intermediate transfer rollers 41 relatively the patch sensors 46 of configuration, other structure is identical with first embodiment.Wherein, for the part same labelled notation of realization, and omit its explanation with the same function of first embodiment.

Patch sensor 46 and intermediate transfer rollers 41 relative being configured between intermediate transfer rollers 41 photoreceptor 11 and secondary transfer roller 42 on every side.As Figure 10 and shown in Figure 11, this patch sensor 46 is reflection type optical sensors, for example comprises that luminous component 461 that is formed by LED and the optical detection part that is for example formed by light emitting diode divide 462.As shown in figure 10, the formed tiltangle 2 of the optical axis of luminous component 461 and intermediate transfer rollers 41 normals to a surface and optical detection part divide 462 optical axis and the formed tiltangle 2 of intermediate transfer rollers 41 normals to a surface to equate, luminous component 461 and optical detection part divide 462 bottoms that are configured in the pore that wears along this optical axis respectively.By this structure, from the patch image normal reflection of irradiates light on intermediate transfer rollers 41 of luminous component 461, the normal reflection light of its reflection divides 462 to detect by optical detection part.As shown in figure 11, the luminous component 461 of patch sensor 46 and optical detection part divide 462 respectively with the CPU113 electric coupling, thereby luminous component 461 is based on the control signal action from CPU113, to patch image 47 (Figure 16) irradiates light that is transferred on the intermediate transfer rollers 41, optical detection part divides 462 to detect this normal reflection light, transmits the light detecting signal of correspondence image concentration to CPU113.

Wherein, the viscosity of the liquid-carrier of the developer solution 32 of second embodiment is 5～3000mpas.The viscosity of developer solution 32 is decided by the liquid-carrier that uses and each component that constitutes toner, toner concentration etc., in the present embodiment, for example viscosity is made as 50～6000mPas.

So, in this embodiment, developer roll 31 is equivalent to " developer solution supporting body " of the present utility model, the development bias voltage produces part 114 and is equivalent to " as forming parts " of the present utility model, intermediate transfer rollers 41 is equivalent to " offset medium " of the present utility model, transfer bias produces part 115 and is equivalent to " transfer member " of the present utility model, and patch sensor 46 is equivalent to " optical sensor " of the present utility model.

Here, on the sub-image supporting bodies such as photoreceptor or the surface configuration of the developer solution that is being carried on the offset medium such as intermediate transfer rollers describe.Figure 12 is a wire drawing phenomenon key diagram.Figure 13 is the concavo-convex synoptic diagram that forms on the developer solution surface.Figure 14 is the deviation key diagram of refractive direction of the lip-deep light of developer solution.

Be distributed to liquid-carrier and in the developer solution that forms at toner, on the sub-image supporting body, toner formed lower floor attached to the surface of sub-image supporting body, on this top layer, formed the liquid-carrier layer by sub-image current potential (compared potential).Equally, on offset medium, with the surface formation lower floor of toner, on this top layer, formed the liquid-carrier layer attached to offset medium by transfer bias.So nearly all toner-particle all is transferred on the offset medium, and for liquid-carrier, its part is stayed on the sub-image supporting body, and nubbin is transferred on the offset medium.So, when the toner picture when the sub-image supporting body is transferred on the offset medium, before and after transfer printing, the liquid-carrier amount that is contained in the developer solution reduces.

Provide developer solution by making developer solution that the developer solution supporting body carried on developing location, contact to finish to the sub-image supporting body from developer solution supporting bodies such as developer rolls with the sub-image supporting body.Then, make on the surface of toner attached to the sub-image supporting body, form toner picture (development) by in its contact process, applying the sub-image current potential.Then, for the developer solution that all contacts with developer solution supporting body and sub-image supporting body both sides, be separated into attached on the developer solution supporting body and the developer solution that left behind and move to developer solution on the sub-image supporting body.

In addition, be performed such as transfer printing to the toner of offset medium from the sub-image supporting body, that is, the developer solution on the sub-image supporting body is contacted with offset medium in transfer position, by in its contact process, applying transfer bias with the surface of toner attached to offset medium.Then, with the developer solution that sub-image supporting body and offset medium both sides contact, be separated into and be attached on the sub-image supporting body and the developer solution that left behind and move to developer solution on the offset medium.

In these cases, when developer solution for example is that toner concentration is when being approximately the such high viscosity developer solution of the developer solution of 5～40 percentage by weights, as shown in figure 12, developer solution 200 is from beginning to separate with developer solution supporting body 201 and sub-image supporting body 202 both sides' state of contact, at this moment, be not easy to separate and produce the wire drawing phenomenon, that is, just separate behind the state of formation knot silk for the moment.If produced the wire drawing phenomenon, then as shown in figure 13, can not be reduced to level and smooth shape because developer solution 200 viscosity are high, on the surface of developer solution 200, the part 203 of pulling out silk forms projection and produces concavo-convex.If forming the surface of the developer solution of patch image has formed concavo-convex, then as shown in figure 14, when when patch image 204 irradiates lights (being arrow among the figure), corresponding its concaveconvex shape is at random fully at the refractive direction (being dotted line among the figure) of the lip-deep light of developer solution 200.If the refractive direction of this light is at random, then can not obtain stable light detecting signal by the optical detection part branch.

When the liquid-carrier amount is many, be easy to generate this wire drawing phenomenon, and the protruding size during generation is very big.That is, on developing location, when developer solution is separated on developer solution supporting body and the sub-image supporting body, because the liquid-carrier amount is many, so be easy to produce the wire drawing phenomenon.Therefore, form be easy to form on the surface of developer solution of the patch image on the sub-image supporting body concavo-convex.

Relative with it, on transfer position, when developer solution is separated on sub-image supporting body and the offset medium, because compare less, so be difficult to produce the wire drawing phenomenon with the liquid-carrier amount on the developing location.So, form the surface of the developer solution of the patch image on the offset medium, compare with the patch image on the sub-image supporting body concavo-convex less, roughly level and smooth.As a result, when the patch image irradiates light on offset medium, the refractive direction of the lip-deep light of developer solution is almost certain, compares with the patch image on the sub-image supporting body, produces the at random of refractive direction hardly.

Figure 15 is the transfer printing view of the patch image from the photoreceptor to the intermediate transfer rollers, and Figure 16 is the development liquid layer synoptic diagram that forms the patch image on the intermediate transfer rollers.The patch image is not based on generating figure from the print command signal of external device (ED), but has preestablished image graphics, in addition, with common toner as on photoreceptor 11, generating, and be transferred on the intermediate transfer rollers 41.That is, as shown in figure 15, toner-particle 322 is attached to the surface of photoreceptor 11, and liquid-carrier is the lamination state on its top layer, is transferred on the primary transfer position 44.Then, by producing the primary transfer bias voltage that part 115 applies from transfer bias, toner-particle 322 moves and is attached surface in intermediate transfer rollers 41 from photoreceptor 11.Then, along with the rotation of photoreceptor 11 and intermediate transfer rollers 41, liquid-carrier 321 separates because with developing location 16 on compare, the liquid-carrier amount on the primary transfer position 44 is few, so, as shown in figure 15, can not produce the wire drawing phenomenon during separation.As a result, as shown in figure 16, the surface of the developer solution 32 of the patch image 47 on the formation intermediate transfer rollers 41 is level and smooth substantially.In the present embodiment, because patch image 47 is as real image, so shown in same figure, toner-particle 322 gathers and form real image on intermediate transfer rollers 41.

Figure 17 is the process flow diagram that the patch of second embodiment is handled routine.In the storer 116 of engine control section 110, store the control program that the 2nd patch is handled.And CPU113 controls the device each several part according to this control program, carries out following patch and handles.At first, form patch image 47 (#30) on photoreceptor 11, its patch image 47 is transferred to (#32) on the intermediate transfer rollers 41 from photoreceptor 11.Then, patch image 47 irradiations on this intermediate transfer rollers 41 are from the light (#34) of luminous component 461, and the catoptrical optical detection part that detects from patch image 47 divides 462 light detecting signals that send to be imported into (#36) in the CPU113.Then, whether the light detecting signal of judging input is in allowed band (#38), if in allowed band (in #38 for being), termination routine then, if not in allowed band (being not in #38), then control image forming conditions, and the image forming conditions of this control is written in the storer 116, by the image forming conditions (#40) of coming updated stored device 116 stored like this.

Below, example to the control image forming conditions describes, in step #38, if optical detection part divides 462 light detecting signal to exceed allowed band, then for example reduce surface potential Vd because patch image 47 concentration are not enough, increase exposure energy, increase development bias voltage Vb, increase the toner concentration in the jar 33.On the other hand, if optical detection part divides 462 light detecting signal not reach allowed band, so because the concentration surplus of patch image 47, institute so that described each conditioned reflex change.

And Kong Zhi image forming conditions can write in the storer 38 of developing cell 30 like this.Then, with suitable sequential, for example can the image forming conditions in the storer 38 be written in the storer 116 according to the reception sequential of print command signal.So in this embodiment, CPU113 is equivalent to " control assembly " of the present utility model.

Figure 18 is the process flow diagram of print processing routine.Make from after the input of the print command signal of external device (ED) by main control part 100, at first, image forming conditions such as the charging bias voltage Vd of storage in the storer 116, exposure energy, development bias voltage Vb are set (#50).Then, implement print processing (#52) according to the image forming conditions of this setting.So, because print action, so can form high quality images according to handle the image forming conditions of controlling by patch.

So, in the present embodiment, because 47 irradiations of the patch image on intermediate transfer rollers 41 are from the light of luminous component 461, so can make the surface of the developer solution 32 that forms patch image 47 level and smooth substantially, as a result, the refractive direction at these developer solution 32 lip-deep light is not at random, almost certain.On the other hand, because optical detection part divide 462 detect by 47 normal reflections of patch image, by the normal reflection light of the light of luminous component 461 irradiations, so there is very cataclysm in the detection light quantity of normal reflection light according to the deviation of the refractive direction on the developer solution surface that forms patch image 47.But, in this embodiment, because it is not at random and almost keep certain at the refractive direction of the light on developer solution 32 surfaces that form patch image 47, so, optical detection part divide 462 can detect exactly 461 that shone by luminous component, from the normal reflection light of patch image 47, so, divide 462 can obtain stable light detecting signal by optical detection part.Thereby, based on the light detecting signal that divides 462 from optical detection part image forming conditions is controlled, can be set only image forming conditions, so, corresponding to by through the time worsen to wait the variation of the unit state that causes, can form high quality images usually.

And, in the present embodiment, because the preferred 5～3000mPas of the viscosity of the liquid-carrier of developer solution 32.So, if viscosity is greatly more than 3000mPas, then because viscosity is too high, so be easy to produce the wire drawing phenomenon, on the other hand, if viscosity is greatly below 5mPas, then because the volatility of liquid-carrier uprises, so, be necessary to be arranged for prevent liquid-carrier to the device external leakage structure, make apparatus structure complicated.In addition, although the viscosity of the liquid-carrier of present embodiment is approximately 5～3000mPas, the viscosity that contains the developer solution 32 of toner also can be approximately 50～6000mPas.

In addition, the utility model has more than and is confined to above-mentioned embodiment, in the scope that does not break away from above-mentioned purport, can append various changes to above-mentioned embodiment, for example, in the above-described 2nd embodiment, comprise intermediate transfer rollers 41, the toner picture of photoreceptor 11 is after once being transferred on the intermediate transfer rollers 41 on the primary transfer position 44, passing through secondary transfer roller 42 secondary transfer printings on the secondary transfer printing position 45 to recording medium 4, be confined to this but have more than, for example, can adopt and omit intermediate transfer rollers 41 and secondary transfer roller is configured on the primary transfer position 44, the toner picture of photoreceptor 11 directly is transferred to structure on the recording medium 4.At this moment, patch sensor 46 can with the recording medium 4 relative configurations after the transfer printing.In this mode, recording medium 4 is equivalent to offset medium.

In addition, in above-mentioned first and second embodiment, the printer of image printing on transfer paper that provides by external device (ED)s such as principal computers is illustrated, but the utility model has more than and is confined to this, also goes for the image processing system that duplicating machine or facsimile unit etc. have general electrofax mode.In addition, above-mentioned embodiment is to be suitable for example of the present utility model in the image processing system of single color printing, yet the object that the utility model is suitable for has more than and is confined to this, the utility model can be applicable to that also coloured image forms in the device.

Claims (3)

1. image processing system, use toner-particle to be dispersed in develop sub-image on the sub-image supporting body of developer solution in the liquid-carrier, that toner concentration is approximately 5～40 percentage by weights, thereby form the toner picture, afterwards, look like to be transferred to this toner on the offset medium, it is characterized in that this image processing system comprises:

Optical sensor, with relative configuration of described development sub-image supporting body, comprise luminous component and optical detection part branch, wherein, described luminous component on described sub-image supporting body, form as the toner of patch image as irradiates light, described optical detection part divides the light that detects from described patch image; And

Control assembly with described optical sensor electric coupling, based on the light detecting signal that divides from described optical detection part, is controlled as the image forming conditions of concentration influencing toner.

2. an image processing system is characterized in that, this image processing system comprises:

The sub-image supporting body has the structure that can carry sub-image in its surface;

The developer solution supporting body, with described sub-image supporting body in abutting connection with configuration, toner is distributed to developer solution carrying in the liquid-carrier, that toner concentration is approximately 5～40 percentage by weights in its surface, and be transferred on the developing location relative with described sub-image supporting body, provide described developer solution by on this developing location, making described developer solution contact described sub-image supporting body to described sub-image supporting body;

Picture forms parts, be connected with described developer solution supporting body, and apply the development bias voltage to it, thus make from the toner of described developer solution supporting body to the developer solution that described sub-image supporting body provides attached on the described sub-image supporting body, thus the described sub-image that develops forms the toner picture;

Offset medium, with described sub-image supporting body in abutting connection with configuration;

Transfer member is connected with described offset medium, and applies transfer bias to it, thereby looks like to be transferred to the toner on the described sub-image supporting body on the offset medium on the transfer position of regulation;

Optical sensor, dispose relative with described offset medium comprises luminous component and optical detection part branch, wherein, described luminous component to be transferred on the described offset medium as the toner of patch image as irradiates light, described optical detection part divides the light that detects from described patch image; And

Control assembly with described optical sensor electric coupling, based on the light detecting signal that divides from described optical detection part, is controlled as the image forming conditions of concentration influencing toner.

3. image processing system as claimed in claim 1 or 2, wherein, described optical detection part branch is configured in the position of detection by the light normal reflection light of normal reflection on described patch image that shines from described luminous component.

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