CN106814568A - Image processing system and adjustment image recording media - Google Patents

Abstract

The present invention provides an image forming apparatus and an image recording medium for adjustment. The image forming apparatus according to the embodiment acquires image data for adjustment to adjust image forming conditions for determining a bias applied to a transfer portion that transfers a toner image to a recording medium. Before the toner image is transferred to the recording medium, the electrical characteristics of the recording medium are detected, and when the toner image is transferred to the recording medium by the transfer part, based on the detected electrical characteristics of the recording medium, it is determined part of the bias.

Description

Image forming apparatus and image recording medium for adjustment

technical field

The present invention relates to an image forming apparatus and an image recording medium for adjustment.

Background technique

An MFP (Multifunction Peripheral) has a transfer unit that transfers a toner image to a recording medium. A conventional MFP detects the electrical characteristics of the transfer portion in a state where there is no recording medium. At this time, the MFP predicts the electrical characteristics of the recording medium to determine the bias voltage to be applied to the transfer unit.

When the predicted electrical characteristics differ from the actual electrical characteristics, there may be a phenomenon that too much or too little toner is transferred to the recording medium, and an optimum image cannot be obtained.

Contents of the invention

An object of the present invention is to provide an image forming apparatus for obtaining an optimum image by determining a bias applied to a transfer portion by detecting electrical characteristics of a recording medium, and an image recording medium for adjustment used by the image forming apparatus.

According to an aspect of the present invention, there is provided an image forming apparatus including: a transfer unit that transfers a toner image to a recording medium; an acquisition unit that acquires adjustment image data for adjusting image forming conditions, the image a forming condition for determining a bias applied to the transfer section; a detection section that detects electrical characteristics of the recording medium before the transfer section transfers the toner image to the recording medium; and A determination unit based on the information of the recording medium detected by the detection unit when the transfer unit transfers the toner image of the image represented by the adjustment image data to the recording medium. The electrical characteristics determine the bias applied to the transfer portion.

According to another aspect of the present invention, there is provided an image recording medium for adjustment, in which an adjustment image for adjusting image forming conditions is recorded on a part of the image recording medium for adjustment, wherein, from one end of the image for adjustment The length from one end of the image recording medium for adjustment is longer than the circumference of a transfer roller of an image forming apparatus using the image recording medium for adjustment.

Description of drawings

FIG. 1 is a side view of an image forming apparatus according to an embodiment.

FIG. 2 is a functional block diagram of the MFP10.

FIG. 3 is a diagram showing the configuration around the detection unit 47 .

4 is a schematic diagram of an image represented by adjustment image data for adjusting image forming conditions.

FIG. 5 is a schematic diagram showing a state in which the detection unit 47 detects the resistance value R1.

FIG. 6 is a schematic diagram of a state where an image is formed on the sheet P in a state where a bias voltage determined by the control unit 100 is applied.

Fig. 7A is a schematic diagram of another example of the adjustment sheet.

Fig. 7B is a schematic diagram of another example of the adjustment sheet.

Fig. 8A is a schematic diagram of another example of the adjustment sheet.

Fig. 8B is a schematic diagram of another example of the adjustment sheet.

FIG. 9A is a schematic diagram of bias determination processing.

FIG. 9B is a schematic diagram of bias determination processing.

detailed description

An image forming apparatus according to an embodiment includes a transfer unit, an acquisition unit, a detection unit, and an identification unit. The transfer section transfers the toner image to a recording medium. The acquisition unit acquires adjustment image data for adjusting image forming conditions for determining a bias voltage to be applied to the transfer unit. The detection section detects electrical characteristics of the recording medium before the transfer section transfers the toner image to the recording medium. The determination unit determines a bias voltage to be applied to the transfer unit based on electrical characteristics of the recording medium detected by the detection unit when the transfer unit transfers the toner image of the image represented by the image data for adjustment to the recording medium.

FIG. 1 is a side view of an image forming apparatus according to an embodiment. Hereinafter, an MFP (Multi Function Peripheral: multifunction peripheral) 10 will be described as an example of an image forming apparatus.

As shown in FIG. 1 , MFP 10 has scanner 12 , control panel 13 , and main body 14 . The main body unit 14 has a control unit 100 , a paper cassette unit 16 , a printer unit 18 , and the like. The control unit 100 controls the scanner 12 , the control panel 13 and the main unit 14 .

The scanner 12 reads a document image. The control panel 13 has input keys 13a and a display unit 13b. For example, the input key 13a receives user's input. For example, the display unit 13b is a touch panel type. The display unit 13b receives the user's input and displays it to the user.

The paper cassette unit 16 has a paper cassette 16a and a pickup roller 16b. The sheet feeding cassette 16 a accommodates sheets P as recording media. The pickup roller 16b takes out the sheet P from the paper feed cassette 16a.

The sheet feeding cassette 16a supplies unused sheets P. As shown in FIG. The manual feed tray 17 feeds unused sheets P by a pickup roller 17 a.

The printing unit 18 performs image formation. For example, the printing unit 18 forms an image of a document image read by the scanner 12 . The printing unit 18 has an intermediate transfer belt 21 . The printing section 18 supports the intermediate transfer belt 21 via a backup roller 40 , a driven roller 41 , and a tension roller 42 . The backup roller 40 has a drive unit (not shown). The printing unit 18 rotates the intermediate transfer belt 21 in the direction of the arrow m.

The printing section 18 has four sets of image forming stations (stations) 22Y, 22M, 22C, and 22K. The respective image forming stations 22Y, 22M, 22C, and 22K are used to form images of Y (yellow), M (magenta), C (cyan), and K (black), respectively. The image forming stations 22Y, 22M, 22C, and 22K are arranged in parallel on the lower side of the intermediate transfer belt 21 along the rotation direction of the intermediate transfer belt 21 .

The printing section 18 has toner cartridges 23Y, 23M, 23C, and 23K above the image forming stations 22Y, 22M, 22C, and 22K. The toner cartridges 23Y, 23M, 23C, and 23K store Y (yellow), M (magenta), C (cyan), and K (black) replenishing toners, respectively.

Next, the Y (yellow) image forming station 22Y among the image forming stations 22Y, 22M, 22C, and 22K will be described as an example. It should be noted that the image forming stations 22M, 22C, and 22K have the same configuration as the image forming station 22Y, and thus detailed description thereof will be omitted.

The image forming station 22Y has a charging charger 26 , an exposure scanning head 27 , a developing device 28 , and a photoreceptor cleaner 29 . A charging charger 26 , an exposure scanning head 27 , a developing device 28 , and a photoreceptor cleaner 29 are arranged around the photoreceptor drum 24 rotating in the arrow n direction.

The image forming station 22Y has a primary transfer roller 30 . The primary transfer roller 30 faces the photosensitive drum 24 across the intermediate transfer belt 21 .

In the image forming station 22Y, after the photosensitive drum 24 is charged by the charging charger 26 , exposure is performed by the exposure scanning head 27 . The image forming station 22Y forms an electrostatic latent image on the photosensitive drum 24 . The developing device 28 develops the electrostatic latent image on the photosensitive drum 24 using a two-component developer composed of toner and carrier.

The primary transfer roller 30 primary transfers the toner image formed on the photosensitive drum 24 to the intermediate transfer belt 21 . Image forming stations 22Y, 22M, 22C, and 22K form color toner images on intermediate transfer belt 21 by primary transfer rollers 30 . The toner images of Y (yellow), M (magenta), C (cyan), and K (black) are sequentially superimposed to form a color toner image. The photoreceptor cleaner 29 removes toner remaining on the photoreceptor drum 24 after primary transfer.

The printing unit 18 has a secondary transfer roller 32 . The secondary transfer roller 32 faces the backup roller 40 across the intermediate transfer belt 21 . The secondary transfer roller 32 secondarily transfers the color toner images on the intermediate transfer belt 21 to the sheet P collectively. The detection unit 47 detects electrical characteristics of the sheet on the secondary transfer roller 32 . The electrical characteristic is the resistance value.

The paper cassette unit 16 and the manual feed tray 17 are supply devices for supplying sheets. Sheets P are fed from the paper feed cassette unit 16 or the manual feed tray 17 along the conveyance path 33 . The merging position 45 is a position where the sheets conveyed from the paper cassette unit 16 and the manual feed tray 17 merge. The transport path 46 is a transport path from the merging position 45 to the secondary transfer roller 32 . It should be noted that the detection section 47 may also detect the electrical characteristics of the sheet on the conveyance path 46 from the merging position 45 to the secondary transfer roller 32 .

The printing unit 18 has a belt cleaner 43 facing the driven roller 41 across the intermediate transfer belt 21 . The belt cleaner 43 removes toner remaining on the intermediate transfer belt 21 after the secondary transfer.

The printing unit 18 includes a registration roller 33 a , a fixing device 34 , and a discharge roller 36 along the transport path 33 . The printing unit 18 has a branching unit 37 and an inverting conveying unit 38 downstream of the fixing device 34 . The branch portion 37 conveys the fixed sheet P to the paper discharge portion 20 or the reverse conveyance portion 38 . When double-sided printing is performed, the inverting conveyance section 38 inverts the sheet P sent from the branch section 37 and conveys it toward the registration roller 33 a. The MFP 10 discharges the sheet P to the paper discharge portion 20 after the printing portion 18 forms the fixed toner image on the sheet P.

It should be noted that the MFP 10 is not limited to the tandem development (tandem phenomenon) method, and the number of developing devices 28 is not limited either.

FIG. 2 is a functional block diagram of the MFP10. MFP 10 has control unit 100 , scanner 12 , control panel 13 , and printer unit 18 . The control unit 100 has a computing device 51 and a storage device 52 . The computing device 51 controls the scanner 12 , the control panel 13 , and the printer unit 18 according to the image processing program stored in the storage device 52 .

The computing device 51 is, for example, a CPU (Central Processing Unit: Central Processing Unit), an ASIC (Application Specific Integrated Circuit: Application Specific Integrated Circuit), or the like. The storage device 52 is ROM (Read Only Memory: Read Only Memory), RAM (Random Access Memory: Random Access Memory), or the like.

The printing section 18 includes a fixing device 24 , a secondary transfer roller 32 , and a developing device 28 .

It should be noted that all or part of the functions of the MFP 10 may also be realized by hardware such as ASIC, PLD (Programmable Logic Device), FPGA (Field-Programmable Gate Array: Field Programmable Gate Array). The image processing program can be recorded in a computer readable recording medium. The computer-readable recording medium refers to, for example, a removable medium such as a flexible disk, a magneto-optical disk, a ROM, and a CD-ROM, and a storage device such as a hard disk built in a computer system. It is also possible to send the image processing program over the electrical communication line.

FIG. 3 is a schematic configuration diagram of the vicinity of the detection unit 47 . The transfer bias HVT output from the capacitor 62 is applied to the secondary transfer roller 32 via the detection portion 47 . The detection portion 47 detects the resistance value of the sheet P based on the transfer bias HVT applied to the secondary transfer roller 32 . The detection unit 47 is, for example, a constant current circuit. The detection unit 47 applies a constant current to the secondary transfer roller 32 to detect a voltage, thereby detecting a resistance value. The toner image T is a toner image of an image represented by adjustment image data described later.

When the conveying speed of the sheet P is 75 mm/s, the detection portion 47 applies, for example, 10 μA to the secondary transfer roller 32 . Also, when the conveyance speed of the sheet P is 150 mm/s, the detection unit 47 applies, for example, 18 μA to the secondary transfer roller 32 .

The detection section 47 detects the resistance value R0 of the sheet P before reaching the secondary transfer roller 32 . Next, the detection portion 47 detects the resistance value R1 in a state where the sheet P is in contact with the secondary transfer roller 32 . The detection unit 47 detects the resistance value R2 (= R1 − R0 ) as the resistance value of the sheet P. As shown in FIG.

The control section 100 determines a bias voltage to be applied to the secondary transfer roller 32 when the toner image T is transferred onto the sheet by the secondary transfer roller 32 . The applied bias voltage is a bias voltage based on the resistance value R2.

It should be noted that, in the state before the sheet P reaches the secondary transfer roller 32 , the detection unit 47 detects the resistance value R0 while the secondary transfer roller 32 makes one revolution (1 turn) or more. The resistance value R0 may be an average value of resistance values detected by the detection unit 47 once or more. Further, the detection unit 47 detects the resistance value R1 while the secondary transfer roller 32 makes one revolution (one turn) or more while the sheet P is in contact with the secondary transfer roller 32 . The resistance value R1 may be an average value of resistance values detected by the detection unit 47 once or more.

Furthermore, the detection unit 47 detects the resistance value in an environment with a temperature of 25° C. and a humidity of 50%, for example. Generally, the resistance value of the secondary transfer roller 32 is preferably 1 megohm to 500 megohm at a temperature ranging from 10°C to 30°C.

FIG. 4 is a diagram showing an image represented by adjustment image data for adjusting image forming conditions. The image data for adjustment is formed on the image sheet for adjustment. In the following description, the image represented by the image data for adjustment is described as the overall image for adjustment. The transport direction 51 indicates the transport direction of the adjustment sheet AP on which the overall image for adjustment is formed. The MFP 10 conveys the adjustment sheet AP in the conveyance direction 51 and reads it with the scanner 12 to acquire image data for adjustment.

An adjustment image 50 for adjusting image forming conditions is provided on a part of the adjustment overall image. The image for adjustment is set in 50 separate colors of black, cyan, magenta, and yellow.

Image 50K is a black gradation image (gradient image). Image 50C is a cyan gradation image. Image 50M is a magenta gradation image. Image 50Y is a yellow gradation image.

The length L of the blank portion from the one end 52 of the adjustment image 50 to the one end 53 of the sheet P is longer than the peripheral length of the secondary transfer roller 32 of the MFP 10 using the sheet P.

Therefore, the secondary transfer roller 32 may rotate at least one turn or more before the adjustment image 50 is formed on the sheet. Also, the sheet does not reach the fixing device 34 until the secondary transfer roller 32 makes one revolution. Therefore, the detection unit 47 can detect the resistance value R1 more accurately.

FIG. 5 is a diagram showing a state in which the detection unit 47 detects the resistance value R1. The detection section 47 detects the resistance value R1 before the toner image T is transferred.

The detection unit 47 detects the resistance value R2 by detecting the resistance value R1. The control section 100 determines a bias voltage to be applied to the secondary transfer roller 32 based on the resistance value R2.

FIG. 6 is a diagram showing a state where an image is formed on the sheet P in a state where a bias voltage determined by the control unit 100 is applied. By detecting the resistance value R2 of the sheet P and applying a bias suitable for the sheet P, an optimal image can be obtained.

7A and 7B are schematic diagrams of other examples of adjustment sheets. The adjustment sheet shown in FIG. 4 is a sheet when the scanner 12 scans only one side thereof. The adjustment sheet shown in FIGS. 7A and 7B is a sheet when the scanner 12 reads both sides thereof.

Fig. 7A shows the surface of the conditioning sheet. The surface is blank paper. Therefore, no image is formed on the surface. It should be noted that the surface is the side on which the scanner 12 initially reads. Fig. 7B shows the back side of the adjustment sheet. The image 50 for adjustment is provided on the back surface of the sheet for adjustment.

When the scanner 12 reads the adjustment sheet shown in FIGS. 7A and 7B , the detection unit 47 detects the resistance value R2 of the sheet surface. The surface of the adjustment sheet is a blank sheet, and therefore no image is formed. Next, the detection unit 47 detects the resistance value R2 of the back surface of the sheet. Thereafter, the control unit 100 determines a bias voltage to be applied to the secondary transfer roller 32 based on the detected resistance value R2. The determined bias voltage is applied to the secondary transfer roller 32 to form the adjustment image 50 on the back surface.

With the adjustment sheet shown in FIGS. 7A and 7B , the detection unit 47 can detect the resistance value of each surface.

8A and 8B are schematic diagrams of other examples of adjustment sheets. The adjustment sheet shown in FIGS. 8A and 8B is also a sheet when the scanner 12 reads both sides thereof.

Fig. 8A shows the surface of the adjustment sheet. An image 80 is provided on a part of the surface. The image 80 is a solid image (beta image). Fig. 8B shows the back side of the adjustment sheet. The image 50 for adjustment is provided on the back surface of the sheet for adjustment.

MFP 10 that has read the adjustment sheet shown in FIGS. 8A and 8B first forms image 80 on the sheet. Next, the detection unit 47 detects the resistance value R2 of the back surface of the sheet on which the image 80 is formed. Thereafter, the control unit 100 determines a bias voltage to be applied to the secondary transfer roller 32 based on the detected resistance value R2. The determined bias voltage is applied to the secondary transfer roller 32 to form the adjustment image 50 on the back surface.

The sheet of blank paper and the sheet on which some images are formed have different resistance values. For this reason, when the adjustment image 50 shown in FIG. 8 is formed, the detection unit 47 detects the resistance value R2 of the sheet. Thereafter, the control unit 100 determines the bias voltage to be applied to the secondary transfer roller 32 based on the resistance value R2. Thus, since a bias suitable for the sheet P is applied, an optimal image can be obtained.

The image on the surface of the adjustment sheet may be a frequently formed image instead of the solid image shown in FIG. 8A . By setting the image on the surface of the adjustment sheet as an image that is frequently formed, the control unit 100 can determine a bias voltage that is more suitable for the usage environment.

9A and 9B are schematic diagrams of bias determination processing. In the bias voltage determination process, the control unit 100 determines whether or not the user has input an instruction to read a sheet (ACT 101 ). A read instruction is input through the input key 13a. When the read instruction is not input (ACT101-No), the control unit 100 executes ACT101 again.

When a reading instruction is input (ACT 101 −Yes), the control unit 100 uses the scanner 12 to read a sheet. Thereafter, the control unit 100 acquires image data representing the read image (ACT 102 ). In the following description, the sheet read by the scanner 12 is described as a sheet for reading. The image-formed sheet is described as an image-forming sheet.

Next, the control unit 100 starts conveyance of the image forming sheet (ACT 103 ). The control unit 100 determines whether or not to form an adjustment image on the image forming sheet (ACT 104 ). In this ACT 104 , the control unit 100 makes an affirmative judgment when the user sets to form an image for adjustment. When the user has not set to form an image for adjustment, the control unit 100 makes a negative judgment.

When the adjustment image is not to be formed (ACT104-No), the control unit 100 determines whether to detect the resistance value of the image forming sheet (ACT105). In this ACT 105 , the control unit 100 makes an affirmative judgment when the user sets to detect the resistance value of the image forming sheet. When the user has not set to detect the resistance value of the image forming sheet, the control section 100 makes a negative judgment.

When the resistance value of the image forming sheet is not detected (ACT105-No), the control section 100 ends the bias determination process. When the resistance value of the image forming sheet is detected (ACT105-YES), the control section 100 proceeds to ACT106.

In ACT104, when an adjustment image is formed on the image forming sheet (ACT104-YES), the detection part 47 detects the resistance value R0 (ACT106).

Next, the control unit 100 determines whether or not the leading end of the conveyed image forming sheet has reached the secondary transfer roller 32 (ACT 107 ). The arrival time from the start of conveyance of the image forming sheet until it reaches the secondary transfer roller 32 is determined according to the conveyance speed and the conveyance distance. In ACT 107, the control unit 100 makes an affirmative judgment when the arrival time has elapsed, and otherwise makes a negative judgment.

When the front end of the image forming sheet does not reach the secondary transfer roller 32 (ACT107-No), the control section 100 executes ACT107 again. When the front end of the image forming sheet reaches the secondary transfer roller 32 (ACT107-YES), the detection part 47 detects the resistance value R1 (ACT108). Next, in the flow shown in FIG. 9B , the detection unit 47 detects the resistance value R2 (ACT 109 ).

When the toner image T is transferred to the image forming sheet by the secondary transfer roller 32 , the control unit 100 determines a bias voltage (ACT 110 ). The determined bias voltage is a bias voltage based on the resistance value R2. Then, when the toner image T is transferred to the image forming sheet by the secondary transfer roller 32 , the determined bias voltage is applied to the secondary transfer roller 32 .

The control unit 100 determines whether or not to form an adjustment image on the back surface of the image forming sheet (ACT 111 ). In this ACT 111, the control unit 100 makes an affirmative judgment when the user sets to form an image for adjustment. When the user has not set to form an image for adjustment, the control unit 100 makes a negative judgment.

When the adjustment image is not to be formed on the back surface of the image forming sheet (ACT111-No), the control unit 100 proceeds to ACT114. The control unit 100 determines whether to store the resistance value R2 in the storage device 52 . In this ACT 114, when the user sets the storage resistance value R2, the control unit 100 makes an affirmative judgment. When the user has not set the stored resistance value R2, the control unit 100 makes a negative judgment.

When storing the resistance value R2 in the storage device 52 (ACT114-Yes), the control unit 100 records the resistance value R2 in the storage device 52 (ACT115). After ACT115, or when the resistance value R2 is not stored in the storage device 52 (ACT114-Yes), the control unit 100 ends the bias voltage determination process.

The resistance value R2 is stored in the storage device 52 together with identification information such as "sheet A" or "user a", for example. When the user selects the identification information displayed on the control panel 13, the control unit 100 reads out the corresponding resistance value R2. The control unit 100 determines a bias voltage based on the read resistance value R2. Since the control unit 100 reads the resistance value R2, the detection unit 47 does not need to detect the resistance value R2. Also, since a bias suitable for the sheet is applied, an optimum image can be obtained.

In ACT111, when an adjustment image is formed on the back surface of the image forming sheet (ACT111-Yes), the control unit 100 proceeds to ACT112. The control unit 100 determines whether or not to automatically scan the back side of the sheet for reading by the scanner 12 (ACT 112 ).

In ACT 112 , when the user sets to automatically read the back side of the sheet for reading, the control unit 100 makes an affirmative judgment. When the user has not set to automatically read the back side of the sheet for reading, the control section 100 makes a negative judgment.

When the back side of the reading sheet is automatically scanned by the scanner 12 (ACT112-Yes), the control unit 100 proceeds to ACT102. When the back side of the reading sheet is not automatically scanned by the scanner 12 (ACT112-No), the control unit 100 proceeds to ACT113. The control unit 100 determines whether or not the user has input an instruction to read a sheet (ACT 113 ).

When the reading instruction is not input (ACT113-No), the control part 100 executes ACT113 again.

When a read instruction is input (ACT113-Yes), the control unit 100 proceeds to ACT102. In ACT 102 , the control unit 100 scans the back side of the sheet with the scanner 12 . After that, the control unit 100 acquires image data representing the read image. The control unit 100 then executes the processing after ACT 103 on the back surface.

It should be noted that when the resistance value R2 of the back surface is detected by the detection unit 47 , the resistance value R2 of the back surface is recorded in the memory device 52 together with the resistance value R2 of the surface.

In the embodiment described above, the detection unit 47 applies a constant current to the secondary transfer roller 32 to detect a voltage, thereby detecting a resistance value. The detection unit 47 may apply a steady voltage to the secondary transfer roller 32 to detect a current, thereby detecting a resistance value. In addition, the detection unit 47 may apply an AC bias to the secondary transfer roller 32 to detect an amount corresponding to impedance. In addition, the detection unit 47 may be constituted by a bridge circuit, and the resistance value of one of the resistors constituting the bridge circuit can be variably controlled.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in other various forms, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope or gist of the present invention, and are also included in the invention described in the claims and their equivalents.

Claims (10)

1. a kind of image processing system, including：

Transfer section, recording medium is transferred to by toner image；

Acquisition unit, obtains the adjustment view data for adjusting image forming conditions, described Image forming conditions are used for the bias for determining to put on the transfer section；

Test section, before toner image is transferred to recording medium by the transfer section, institute State the electrical characteristic that test section detects the recording medium；And

Determining section, in the transfer section by the image represented by the adjustment view data When toner image is needed on recording medium, the determining section is based on being detected by the test section The electrical characteristic of the recording medium for going out, it is determined that putting on the bias of the transfer section.

2. image processing system according to claim 1, wherein,

It is needed on when by the toner image of the image represented by the adjustment view data The recording medium it is two-sided when, test section detection is in one side transferred with toner image The recording medium electrical characteristic,

Toner image is being needed on by the another of the recording medium by the transfer section During face, the determining section be based on the test section detect it is described in one side transferred with tone The electrical characteristic of the recording medium of agent image, it is determined that putting on the bias of the transfer section.

3. image processing system according to claim 1, also includes：

Selector, when not by the transfer section by represented by the adjustment view data When the toner image of image is needed on the recording medium, the selector allows the selection to be The no electrical characteristic that the recording medium is detected by the test section.

4. image processing system according to claim 1, wherein,

The test section detects the electrical characteristic of the recording medium in the transfer section.

5. image processing system according to claim 1, wherein,

The test section from automatically supply recording medium multiple feedways convey and come Detected on the transport path that the position that the recording medium is converged starts to the transfer section The electrical characteristic of the recording medium.

6. image processing system according to claim 1, wherein,

The toner image of the image being not limited to represented by the adjustment view data, even if Toner image is needed in one side transferred with the another of the recording medium of random colour toner image When simultaneously, the test section can also detect the electrical characteristic of the recording medium,

Transferred in the toner image that the another side will be transferred to by the transfer section To the recording medium when, the determining section be based on as described in the test section is detected Simultaneously transferred with random colour toner image recording medium electrical characteristic, it is determined that putting on institute State the bias of transfer section.

7. image processing system according to claim 1, wherein,

It is provided with for adjusting in a part for the image represented by the adjustment view data The adjustment image of whole image forming conditions,

It is to one end of adjustment image recording media from one end of the adjustment image Length Billy only is with the transfer roll of the image processing system of the adjustment image recording media Girth it is longer.

8. image processing system according to claim 1, wherein,

The electrical characteristic of the recording medium and the determination are detected in the test section Portion is determined after the bias for putting on the transfer section, by the transfer section by toner Image is needed on the recording medium.

9. image processing system according to claim 1, wherein,

The acquisition unit in one side or double-sided recording modes by having the adjustment view data The adjustment of represented image is read out with recording medium, so as to obtain the adjustment figure As data.

10. a kind of adjustment image recording media, in a part for the adjustment image recording media Record has the adjustment image for adjusting image forming conditions, wherein,

To the one of the adjustment image recording media from one end of the adjustment image Length Billy turning with the image processing system of the adjustment image recording media untill end The girth for printing roller is longer.