JP2005024702A - Toner cartridge, image forming apparatus, and method of controlling image forming apparatus based upon history of toner cartridge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make the picture quality of a toner image high irrelevantly to variation in electrification characteristic resulting from the history of various types of toner of a toner cartridge. <P>SOLUTION: Manufacture information on the toner cartridge 21 is recorded in an IC (integrated circuit) chip 23 of the toner cartridge 21 and read in a control unit 27 by a non-contact IC reader 26 of an image forming apparatus 8. Storage information on a container transporting machine 2 for the toner cartridge 21 is transferred from a host computer 1 to the control unit 27. The control unit 27 brings an image formation part under feedback control so as to compensate electrification characteristics of toner according to the history information on toner obtained from the manufacture information and storage information. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toner cartridge for supplying toner to a developing device in an image forming apparatus such as a copying machine or a printer. The present invention relates to a control method of an image forming apparatus based on history of the apparatus and toner cartridge.
[0002]
[Prior art]
In a process toner cartridge that is detachably attached to an apparatus main body in an electrophotographic image forming apparatus such as a copying machine, in order to determine whether or not the toner stored in the process toner cartridge can be reused. Conventionally, there is an apparatus having means for detecting a temperature history of a process toner cartridge. (For example, refer to Patent Document 1.)
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-249598 (pages 6 and 7, FIG. 2)
However, although the device of (Patent Document 1) detects a temperature history in storage and transportation until the process cartridge is collected, the detection result is used only for selecting whether or not the process cartridge can be reused. . That is, the detection result of the temperature history of the process cartridge is not intended to be used for improving the image quality.
[0004]
On the other hand, in recent years, toner cartridges are exported overseas after production, or toner cartridges manufactured overseas are further transported to consumption areas. The number of days elapsed from manufacture to use varies, and the storage status of toner cartridges is diversified. For this reason, the characteristics of the toner stored in the toner cartridge change depending on the storage condition of the toner cartridge, the predetermined development characteristics cannot be obtained, the image density is insufficient, the fog on paper is increased, the halftone reproducibility is deteriorated, etc. There is a possibility that the image quality of the toner image is deteriorated due to the defect.
[0005]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION Accordingly, the present invention solves the above-described problems and provides a toner cartridge, an image forming apparatus, and an image forming apparatus based on a history of toner cartridges that can obtain high-quality toner images regardless of the history of various toners depending on the storage status of the toner cartridge. An object is to provide a control method.
[0006]
[Means for Solving the Problems]
As a means for solving the above-mentioned problems, the present invention provides a toner container having a toner supply port for storing toner, mounting the image forming apparatus, and supplying the toner to the image forming apparatus, and the toner container. And a recording medium for recording history information about the toner that is provided and stored in the toner container.
[0007]
According to another aspect of the present invention, there are provided a latent image forming section for forming a latent image on an image carrier in the apparatus main body, and a developing device for supplying toner to the latent image to form a toner image. A toner cartridge supporting portion that detachably supports a toner cartridge that stores the toner to be replenished in the developing device and includes the toner history information; a reading device that reads the history information of the toner; A latent image forming unit and / or a control unit for controlling the developing device is provided according to the history information of the toner.
[0008]
According to another aspect of the present invention, as a means for solving the above-described problems, a developing device that forms a latent image on an image carrier by a latent image forming unit and then replenishes toner from a toner cartridge that is detachably attached to the apparatus body. In a method for controlling an image forming apparatus based on a history of a toner cartridge that supplies toner to a latent image to obtain a toner image, a first step of writing history information of the toner in the toner cartridge into the toner cartridge; and the toner cartridge A second step of reading the toner history information when the toner image is attached to the apparatus main body, and controlling the latent image forming unit and / or the developing device according to the toner history information read in the second step. The third step is performed.
[0009]
With this configuration, the present invention obtains a good toner image regardless of the storage state of the toner cartridge by controlling the image forming conditions according to the history information of the toner recorded on the toner cartridge.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the first embodiment shown in FIGS. FIG. 1 is a schematic configuration diagram illustrating an image forming unit 10 of the image forming apparatus 8. A charger 12 constituting a latent image forming unit that forms a latent image on the photosensitive drum 11 in accordance with the rotation of the photosensitive drum 11 in the direction of arrow s around the photosensitive drum 11 that is an image carrier of the image forming unit 10. And a laser writing unit 13 is provided. Further, around the photosensitive drum 11, a developing device 16, a transfer / peeling charger 17, a cleaner 18, and a static elimination lamp 20 are disposed.
[0011]
The image forming apparatus 8 is connected to the host computer 1 as a terminal device as shown in the system configuration diagram of FIG. The storage information of the container transport machine 2 is input to the host computer 1 via a non-contact IC reader / writer 6 described later. The container transport machine 2 includes, in part, a thermohygrometer 3 that measures the temperature and humidity of the outside air and an IC chip 4 that records storage information that is a measurement result of the thermohygrometer. In addition, a contactless IC reader / writer 6 that reads storage information recorded on the IC chip 4 and transmits it to the host computer 1 is installed at an important point of the distribution channel such as a storage warehouse of the container transport machine 2 at the shipping destination. Is done.
[0012]
The charging device 12 has a variable applied voltage when the surface of the photosensitive drum 11 is uniformly charged by the control device 27 that controls the entire image forming apparatus 8. The developing device 16 is a conventionally known magnetic brush type developing device that performs development using a two-component developer including a toner and a carrier, and includes a developing roller 16b and a transport auger 16c in a developing container 16a. A variable developing bias is applied to the developing roller 16b by a control device 27 from a bias power source 16e having a variable applied voltage. The developing device 16 includes a toner density sensor 16d.
[0013]
Further, as shown in FIG. 3, in the image forming apparatus 8, a toner cartridge 21 for storing toner to be replenished according to the toner density in the developing device 16 detected by the toner density sensor 16d is attached and detached in the direction of the arrow t. Can be installed freely. As shown in FIG. 4, an IC chip 23 as a recording medium is provided on the outer wall of the toner container 22 having the toner supply port 22a of the toner cartridge 21 on the take-out side. The IC chip 23 is the toner history information and the manufacturing record of the toner cartridge 21, which is the manufacturing record, the lot number. The manufacturing location is recorded and attached to the toner container 22 when the toner cartridge 21 is manufactured. The toner cartridge support portion 24 of the image forming apparatus 8 is provided with a non-contact IC reader 26 that is a reading device that reads the IC chip 23.
[0014]
FIG. 5 is a block diagram showing a control system of the image forming apparatus 8. On the input side of the control apparatus 27 for controlling the entire image forming apparatus 8, an operation panel capable of inputting a print mode, sheet paper selection, the number of sheets, and the like. An operation key 28 (not shown), various switches / sensors 30, a non-contact IC reader 26, and the like are connected. Further, the host computer 1 is connected to the input side of the control device 27 and the storage information of the container transporter 2 is transmitted.
[0015]
On the output side of the control device 27, a voltage is applied to the display device 31 on the operation panel (not shown), the photosensitive drum 11, the developing roller 16b, the motor driver 32 that rotationally drives the conveyance auger 16c, and the like, and the charger 12. A variable charging power source 33, a laser exposure device 13, a variable bias power source 16e, a cartridge motor 34 for rotating the toner cartridge 21, and the like are connected.
[0016]
The control device 27 analyzes the toner history information in the analysis unit 27a from the production record of the toner cartridge 21 from the non-contact IC reader 26 and the storage information of the container transporter 2 from the non-contact IC reader / writer 6, According to the analysis result, the variable charging power source 33, the variable bias power source 16e, and / or the cartridge motor 34 that rotationally drives the toner cartridge 21 are feedback-controlled.
[0017]
Next, the operation will be described. First, the toner cartridge 21 is manufactured at the time of manufacture with a lot number. Then, the IC chip 23 on which the manufacturing place is recorded is attached to the toner container 21 and a predetermined quantity is loaded into the container transporter 2 and shipped. Storage information during transportation of the container transporter 2 or during storage in a warehouse or the like is measured by the thermohygrometer 3 provided in the container transporter 2 and recorded on the IC chip 4 as needed. The storage information recorded on the IC chip 4 is read by a non-contact IC reader / writer 6 provided in a storage place such as in a ship or a warehouse, and is input to the host computer 1.
[0018]
Next, an image forming process by the image forming apparatus 8 will be described. When the toner of the toner cartridge 21 mounted on the image forming apparatus 8 is not affected by temperature and humidity and does not change with time, the charging power source 33 is charged to the charger 12 by the control device 27. 11 is set so that the reference surface potential is −700 V, and the bias power source 16 e is set so that the developing bias is −500 V as a reference. The controller 27 sets the drive of the cartridge motor 34 so that the toner specific density in the developing container 16a is maintained at 6.5% of the reference.
[0019]
When the image forming process is started in the image forming apparatus 8 set as described above, the photosensitive drum 11 is uniformly charged to −700 V by the charger 12 according to the rotation in the direction of the arrow s, and is converted into an image signal. The corresponding laser beam 13a is irradiated. As a result, the photosensitive drum 11 forms an electrostatic latent image and reaches the developing device 16. The electrostatic latent image is developed by a developing roller having a developing bias of −500 V, and a toner image is formed on the photosensitive drum 11.
[0020]
Next, the toner image on the photosensitive drum 11 is transferred to the recording paper P or the like by the transfer / peeling charger 17. After the transfer, the photosensitive drum 11 can be formed with the next image through the cleaner 18 and the charge eliminating lamp 20. Further, the recording paper P peeled off from the photosensitive drum 11 after the toner image is transferred is fixed by a fixing device (not shown) and the image forming process is completed.
[0021]
During the image forming process, when the toner density sensor 16d detects a decrease in the toner specific density in the developing container 16a, the controller 27 drives the cartridge motor 34 to supply the toner in the toner container 22. A predetermined amount of toner is supplied to the developing container 16a from the opening 22a. When the toner specific density in the developing container 16a reaches a predetermined value, the cartridge motor 34 is stopped.
[0022]
When the toner container 22 becomes empty during the toner replenishment operation in this way, the empty toner cartridge 21 is taken out from the toner cartridge support portion 24 of the image forming apparatus 8 and replaced with a new toner cartridge 21. When a new toner cartridge 21 is mounted on the toner cartridge support portion 24 of the image forming apparatus 8, the non-contact IC reader 26 reads the IC chip 23 of the new toner cartridge 21. . The manufacturing location is input to the control device 27.
[0023]
The control device 27 analyzes the history information of the toner in the analysis unit 27a from the recording at the time of manufacturing the toner cartridge 21 from the non-contact IC reader 26 and the storage information of the container transporter 2 input from the host computer 1. The image forming unit 10 is feedback controlled according to the toner history information of the toner cartridge 21. That is, the drive of the cartridge motor 34 is feedback-controlled so as to change the toner specific density of the developing device 16 according to the toner history information of the toner cartridge 21, and the surface potential of the photosensitive drum 11 charged by the charger 12 is controlled. The charging power source 33 is feedback controlled to change, or the bias power source 16e is feedback controlled to change the developing bias. Alternatively, after resetting the toner specific density, the surface potential of the photosensitive drum and / or the developing bias by combining each feedback control, the image forming process is newly restarted.
[0024]
Next, a Toshiba copier pre-image 455 is provided with the feedback control function of the present embodiment, the toner cartridge 21 having various histories is mounted, the image forming process is performed, and the display quality of the formed toner image is performed. The following results were obtained when the quality test was evaluated. The evaluation criteria are ◎: good, ○: normal, Δ: slightly inferior, ×: poor.
[0025]
First, as a (comparative example), regardless of the toner history information of the toner cartridge 21, the surface potential of the photosensitive drum 11 is set to -700V, the development bias is set to -500V, and the toner specific density is set as a reference. When the image forming process was performed in a fixed state of 6.5%, the results shown in Table 1 of FIG. 6 were obtained. In (Comparative Example), when the storage environment is a high temperature and high humidity of 35 ° C. and humidity 85%, the chargeability of the toner deteriorates after long-term storage, and fogging occurs on the white background, and the density in the halftone is This causes a problem that the image quality is lowered due to the increase. Therefore, if the storage period is as short as 7 days, the fog, image density and halftone density reproducibility are all good, and good image quality can be obtained, but if the storage period is 60 days or 120 days, the fog and Poor tone reproduction and poor image quality.
[0026]
When the storage environment is 20 ° C. and the humidity is 50%, good image quality can be obtained when the storage period is 60 days or 120 days, but when the storage period is 7 days, the image density and halftone density reproducibility are obtained. Slightly inferior. When the storage environment is a low temperature and low humidity with a temperature of 5 ° C. and a humidity of 20%, the image density is low, and in the middle tone, the density is low and the image quality is deteriorated. Therefore, the image density and the halftone density reproducibility are poor and the image quality is remarkably deteriorated when the storage period is 7 days, 60 days or 120 days.
[0027]
Next, as a (first evaluation test), development was performed by controlling the toner specific density of the developing device 16 in accordance with the history information of the toner in the toner cartridge 21, and the results shown in Table 2 of FIG. 7 were obtained. Obtained.
[0028]
According to (first evaluation test), even when the storage environment is 35 ° C. and the humidity is 85% and the storage period is 60 days or 120 days, the specific toner density is 1.0% or 1.5% from the reference, respectively. %, The fog and halftone density reproducibility was improved, and good image quality was obtained. When the storage environment is a temperature of 20 ° C. and a humidity of 50%, if the storage period is 7 days, the toner specific density is increased by 0.5% from the standard, and if the storage period is 120 days, the toner specific density is set to 0. If it was reduced by 2%, the fog and halftone density reproducibility was improved and good image quality was obtained. When the storage environment is 5 ° C. and the humidity is 20%, if the specific toner density is increased by 1.5%, 1.0% or 0.5% from the reference in the storage period of 7 days, 60 days or 120 days, respectively. The fog and the halftone density reproducibility were improved, and a good image quality was obtained.
[0029]
Next, as a (second evaluation test), an image forming process was performed by controlling the charging potential of the photosensitive drum and the developing bias of the developing roller 16b in accordance with the history information of the toner in the toner cartridge 21. The results shown in (Table 3) of FIG. 8 were obtained.
[0030]
According to the (second evaluation test), when the storage environment is a temperature of 35 ° C. and a humidity of 85%, the charging potential of the photosensitive drum 11 depends on the storage period of 7 days, 60 days, or 120 days, respectively. Good image quality was obtained by raising the developing bias by 20 V, 150 V or 200 V from the reference. When the storage environment is 20 ° C. and the humidity is 50%, even if the storage period is 7 days or 60 days, the charging potential and the developing bias of the photosensitive drum 11 are lowered by 50 V or 20 V from the reference, respectively. The image quality was obtained. When the storage environment is 5 ° C. and humidity is 20%, the charging period and the developing bias of the photosensitive drum 11 can be lowered by 200 V, 150 V, or 50 V from the reference every 7 days, 60 days, or 120 days. Image quality was obtained.
[0031]
Next, as (third evaluation test), the toner specific density of the developing device 16 is controlled according to the toner history information of the toner cartridge 21, and the charging potential of the photosensitive drum and the developing bias of the developing roller 16b are controlled. When the image forming process was performed, the results shown in Table 3 of FIG. 9 were obtained.
[0032]
According to the (third evaluation test), when the storage environment is 35 ° C. and the humidity is 85%, the charging potential and the developing bias of the photosensitive drum 11 are stored on the storage period of 7 days, 60 days, or 120 days, respectively. When the storage period is 60 days or 120 days, the toner specific density is reduced by 0.5% or 0.8% from the reference, respectively, and a good image quality can be obtained. . When the storage environment is a temperature of 20 ° C. and a humidity of 50%, the charging period and the developing bias of the photosensitive drum 11 are lowered by 30 V or 20 V from the reference and the storage period is 7 days, respectively. Alternatively, in the case of 120 days, good image quality was obtained by increasing the specific toner density by 0.3% or 0.1% from the standard. When the storage environment is a temperature of 5 ° C. and a humidity of 20%, the charging potential and the developing bias of the photosensitive drum 11 are lowered by 100 V, 80 V, or 30 V from the reference for the storage period of 7 days, 60 days, or 120 days, respectively. Good image quality was obtained by increasing the specific toner density by 0.7%, 0.5%, or 0.3% from the standard.
[0033]
Therefore, even for toner that would cause poor image quality due to various histories such as high temperature and high humidity or low temperature and low humidity, according to the various histories, the toner specific density, the charging potential of the photosensitive drum 11 and / or development. Good image quality was obtained by controlling the bias.
[0034]
According to the first embodiment, the toner specific density, the charging potential of the photosensitive drum 11, and the toner cartridge 21 according to the toner history information of the toner cartridge 21 obtained from the information of the IC chip 23 and the storage information of the container transporter 2. / Or the developing bias of the developing roller 16b can be controlled to compensate for the decrease in charging property. Therefore, regardless of the toner history of the toner cartridge 21, it is possible to improve the image quality and to obtain a good image quality even with a toner that has conventionally caused an image defect.
[0035]
Next, a second embodiment of the present invention will be described. In the second embodiment, the storage information is directly recorded on the recording medium of each toner cartridge in the first embodiment. Therefore, in the second embodiment, the same components as those described in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
[0036]
In the present embodiment, as shown in FIG. 10, a non-contact IC reader / writer 7 is further installed in the container transport machine 2 having the thermohygrometer 3 and the IC chip 4. When the toner cartridge 21 is taken out from the container transporter 2 at the final storage location, the storage information read from the IC chip 4 is written into the IC chip 23 of the toner cartridge 21 by the non-contact IC reader / writer 7.
[0037]
When the toner cartridge 21 in which the storage information is written in the IC chip 23 is attached to the image forming apparatus 8, the non-contact IC reader 26 reads the storage information of the new toner cartridge 21 and inputs it to the control device 27. Therefore, the control device 27 can obtain the history information of the toner only from the storage information of the toner cartridge 21 from the non-contact IC reader 26 without requiring input of information from the host computer.
[0038]
In accordance with the toner history information obtained from the non-contact IC reader 26, the control device 27, like the first embodiment, the toner specific density of the image forming unit 10, the charging potential of the photosensitive drum 11, and the like. The image forming process is performed by feedback controlling the developing bias of the developing roller 16b.
[0039]
According to the second embodiment, the toner specific density, the charging potential of the photosensitive drum 11 and / or the developing bias of the developing roller 16b according to the toner history information of the toner cartridge 21 obtained from the information of the IC chip 23. By controlling the toner, it is possible to compensate for the deterioration of the charging characteristics as in the first embodiment, and the image quality can be improved regardless of the toner history of the toner cartridge 21, and further, the toner that has caused the image defect conventionally. Even so, good image quality can be obtained. Moreover, since the history information of the toner can be obtained only from the information from the IC chip 23 provided in the toner cartridge 21, information from the host computer or the like becomes unnecessary, and the control system for feedback control of the image forming unit 10 can be simplified. .
[0040]
The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention. For example, a recording medium attached to the toner cartridge by providing a temperature and humidity meter for each toner cartridge. The recording items are not limited, and toner characteristics may be recorded. Further, the image forming apparatus, the container transport machine, the reading device provided in a predetermined storage location, etc. may be either a contact type or a non-contact type.
[0041]
Further, when shipping the toner cartridge, it is not necessary to use the container transporter, and the toner cartridge may be placed in a packing box capable of packing a predetermined quantity. In this case, an IC chip that records the storage information, which is the measurement result of the thermohygrometer, is provided in each packing box, and the storage information of the packing box is stored by an IC reader / writer provided at the final storage location, etc. Read and input to the host computer. Alternatively, when an IC reader / writer is provided in the packing box and the toner cartridge 21 is taken out from the packing box at the final storage location, the storage information read from the IC chip by the IC reader / writer of the packing box is stored in the IC chip of the toner cartridge 21. You may write.
[0042]
【The invention's effect】
As described above in detail, according to the present invention, toner history information can be obtained by attaching a toner cartridge to the image forming apparatus, and an image forming unit of the image forming apparatus can be provided according to the obtained toner history information. By performing feedback control, it is possible to improve the image quality regardless of fluctuations in the charging characteristics of the toner, and it is possible to obtain good image quality even with toner that has caused image defects in the past.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram illustrating an image forming unit of an image forming apparatus according to a first embodiment of the present invention.
FIG. 2 is a system configuration diagram illustrating an image forming apparatus which is a host computer and a terminal device according to the first embodiment of this invention.
FIG. 3 is a partial perspective view illustrating attachment and detachment of the toner cartridge of the image forming apparatus according to the first exemplary embodiment of the present invention.
FIG. 4 is a side view showing the toner cartridge according to the first embodiment of the present invention.
FIG. 5 is a block diagram showing a control system of the image forming apparatus according to the first embodiment of the present invention.
FIG. 6 is a table 1 showing image quality results of a comparative example when an image forming process is performed without controlling the image forming unit regardless of toner history information.
FIG. 7 is a table (Table 2) showing an evaluation result by (first evaluation test) of the first embodiment of the present invention.
FIG. 8 is a table (Table 3) showing an evaluation result by the (second evaluation test) of the first embodiment of the present invention.
FIG. 9 is a table (Table 4) showing an evaluation result by (third evaluation test) of the first embodiment of the present invention.
FIG. 10 is an explanatory diagram showing a configuration of a container transport machine according to a second embodiment of this invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Host computer 2 ... Container transport machine 3 ... Thermo-hygrometer 4 ... IC chip 6 ... Non-contact IC reader / writer 8 ... Image forming apparatus 10 ... Image forming part 11 ... Photoconductor drum 12 ... Charger 13 ... Laser writing unit DESCRIPTION OF SYMBOLS 16 ... Developing device 16b ... Developing roller 16d ... Toner density sensor 16e ... Bias power supply 21 ... Toner cartridge 22 ... Toner container 22a ... Toner supply port 23 ... IC chip 24 ... Toner cartridge support part 26 ... Non-contact IC reader 27 ... Control device 27a ... analysis unit 33 ... charging power supply 34 ... cartridge motor

Claims (10)

A toner container having a toner supply port for storing toner and mounting the image forming apparatus to supply the toner to the image forming apparatus;
A toner cartridge comprising: a recording medium that is provided in the toner container and records history information about the toner stored in the toner container. The toner cartridge according to claim 1, wherein the recording medium records one of a storage time of the toner or a storage temperature and storage humidity of the toner. A latent image forming unit that forms a latent image on an image carrier in the apparatus body;
A developing device for supplying toner to the latent image to form a toner image;
A toner cartridge support portion that detachably supports a toner cartridge that stores the toner to be replenished to the developing device and includes the history information of the toner;
A reading device for reading the history information of the toner;
An image forming apparatus comprising: a control unit that controls the latent image forming unit and / or the developing device according to history information of the toner from the reading device. The control unit controls at least one of a charging potential of the image carrier of the latent image forming unit, a toner density ratio of the developing device, and a developing bias of the developing device. Item 4. The image forming apparatus according to Item 3. The image forming apparatus according to claim 3, wherein the control unit further receives storage information for analyzing the history information of the toner from a host computer. 6. The image forming apparatus according to claim 5, wherein the toner history information is manufacturing information when the toner cartridge is manufactured. A toner cartridge that forms a latent image on an image carrier by a latent image forming unit and then supplies toner to the latent image by a developing device that is replenished with toner from a toner cartridge that is detachably attached to the apparatus body. In the control method of the image forming apparatus based on the history of
A first step of writing history information of toner in the toner cartridge into the toner cartridge;
A second step of reading the history information of the toner when the toner cartridge is mounted on the apparatus main body;
And a third step of controlling the latent image forming unit and / or the developing device in accordance with the history information of the toner read in the second step. Control method of the device. The third step controls at least one of a charging potential of the image carrier of the latent image forming unit, a toner density ratio of the developing device, or a developing bias of the developing device. 8. A method for controlling an image forming apparatus according to a history of a toner cartridge according to claim 7. The third step is to control the latent image forming unit and / or the developing device after analyzing the history information of the toner read in the second step using storage information from a host computer. 8. A method for controlling an image forming apparatus based on a history of a toner cartridge according to claim 7. 10. The method according to claim 9, wherein the toner history information is manufacturing information when the toner cartridge is manufactured.

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