JP4735799B2 - Image forming apparatus and image forming system equipped with exchange unit - Google Patents

Description

  The present invention relates to an image forming apparatus and an image forming system, and more particularly to an apparatus in which an exchange unit is replaceably mounted on an apparatus main body.

As an image forming apparatus, there is known an image forming apparatus in which a unit including consumables can be easily replaced by a user.
On the other hand, when the unit exchanged by the user is something other than a genuine product for the image forming apparatus, the performance of the image forming apparatus such as a deterioration in image quality cannot be fully exhibited, the operation cannot be guaranteed, or a failure, etc. May occur. This is because the image forming apparatus controls the image forming process in consideration of toner characteristics, image carrier characteristics, charging voltage, cleaning characteristics, fixing characteristics, and the like.

  Therefore, in order to maintain the image quality of the image forming apparatus and prevent problems, in Japanese Patent Application Laid-Open No. 2004-228561, a genuine carrier part is provided with a data carrier that holds consumption amount data of consumables, and is provided in the apparatus main body. There is disclosed a method for determining whether or not a consumable part has been supplied to a genuine replacement part by comparing the consumption quantity detected by the quantity detection unit with the consumption quantity data held by the data carrier.

Further, in Patent Document 2, a storage means for storing predetermined code data is provided in the toner cartridge, and copying is prohibited when the code machine main body side cannot read the predetermined code data from the storage means. Is disclosed.
Japanese Patent Application Laid-Open No. 2004-228561 discloses a method for displaying a warning and prohibiting printing when empty information written in a cartridge when toner out is detected is read from a cartridge supplemented with toner.

Further, in Patent Document 4, the count of the created image is stored in the memory of the cartridge, and when the preset end count indicating the number of images that can be created with the cartridge is equal to the count of the created image, the cartridge is thereafter referred to. A method of disabling is disclosed.
Further, in Patent Document 5, it is determined that the mounted toner supply container is incompatible and is incompatible by bidirectional communication between the container side communication means of the toner supply container and the main body side communication means of the apparatus main body. If the selection input means selects to continue the replenishment process while ignoring the image, the image forming condition is set to a level lower than the appropriate image forming condition, and it is easy to find out that the toner replenishing container is incompatible. A method is disclosed.

Japanese Patent Laid-Open No. 10-133528 Japanese Patent Laid-Open No. 6-149051 Japanese Patent Laid-Open No. 2001-100598 Japanese Patent No. 2602341 Japanese Patent No. 3476704

  The present invention provides an image forming apparatus and an image forming system capable of using an exchange unit other than a genuine product at the intention of a user even when an exchange unit other than a genuine product is mounted. This is the first purpose. In addition, a second object of the present invention is to provide an image forming apparatus and an image forming system that allow a user to recognize when an exchange unit other than a genuine product is mounted. .

In order to achieve the above object, a first feature of the present invention is that an apparatus main body, at least one replacement unit that is replaceably attached to the apparatus main body and stores a developer, and the replacement unit A determination means for determining whether the replacement unit is a genuine product or a non-genuine product, and if the replacement unit is determined to be a non-genuine product as a result of the determination by the determination device, this is added. Image formation that controls the developer density in the developer unit based on the image density of the image formed on the recording medium, corresponding to the amount of developer used, which is the operation mode corresponding to the genuine replacement unit against control conditions, limits determined based on the image density for the set value of the density control of the concentration control of the set value of the change amount of Ru control conditions to increase or decrease of the developer, or the developer for the amount of the developer Increase value Is not Ru control conditions, or the initial value before usage regardless density control setting the Ru controlled conditions is a constant developer in the developer or the developer for the set value of the density control of the developer is used the control conditions Ru is increased or decreased, or together to select one user from the control condition for image formation corresponding to the amount of the developer which is is another operation mode control conditions composed of a combination of two or more of these, the And an image forming apparatus having control means for controlling printing on a sheet in another selected operation mode. Therefore, it is possible to operate even if a non-genuine product is installed as a replacement unit, but since the fact is printed on paper, the user may recognize that a non-genuine product is installed as a replacement unit. it can.

  Preferably, a plurality of replacement units are provided for each color, and the control means displays for each color that a non-genuine product is being used.

  Preferably, the printing apparatus further includes a printing time selection means for selecting a printing time for a sheet indicating that the replacement unit is other than a genuine product. Preferably, the printing time selection means includes a power-on selection unit that selects printing on paper indicating that the replacement unit is a non-genuine product when the power is turned on. When selecting to perform printing on a sheet indicating that it is a product, a selection unit for selecting a predetermined number of sheets to be printed every predetermined number of prints, or when specifying printing on a sheet indicating that the replacement unit is something other than a genuine product At least one selected from the selection unit is included. Further, the designation time selection unit prints on a sheet indicating that the replacement unit is other than a genuine product when a designation signal is input from an operation panel, for example, or is connected to the outside, for example, an image forming apparatus. When the designation signal is input from the client PC, it is possible to print on a sheet indicating that the replacement unit is other than a genuine product.

  Preferably, the printer has a billing unit that charges for printing the paper, and the control unit does not charge for printing the paper on which the replacement unit is other than a genuine product. Charge control means is included.

According to a second aspect of the present invention, the image forming apparatus includes a host device connected to the image forming apparatus, and the image forming apparatus is replaced with the apparatus main body. At least one replacement unit that is detachably mounted and that stores developer, a determination unit that determines whether the replacement unit is a genuine product or a non-genuine product, a determination result of the determination unit, When it is determined that the replacement unit is other than a genuine product, a message to that effect is added, and the image formed on the recording medium corresponding to the amount of developer used in the operation mode corresponding to the genuine replacement unit control conditions of the image forming control conditions for the density control of the developer of the image density on the basis the developing device, Ru increase or decrease the amount of change in the set value of the density control of the developer with respect to the amount of the developer, Or of developer Degree control setting image density Based on a defined Ru controlled conditions to increase or decrease the limit values for or developer usage regardless density control setting the Ru controlled conditions is a constant developer, or developing initial values Ru increase or decrease the control conditions before the developer for density control settings are used for agent, or the amount of the developer which is is another operation mode control conditions composed of a combination of two or more of these Control means for allowing the user to select one of the corresponding image forming control conditions and controlling the printing on the paper in the other selected operation mode. The image forming system includes a printing time selection unit that selects a printing time for a sheet other than the product.

  According to the present invention, even if an exchange unit other than a genuine product is mounted, an exchange unit other than a genuine product can be used at the user's will. This is printed on the paper so that the user can recognize that fact.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an image forming system 1 according to an embodiment of the present invention. The image forming system 1 is configured by connecting a host apparatus 2 such as a client PC (Personal Computer) to a plurality of image forming apparatuses 10 via a network 3, for example. The host device 2 may be a terminal other than a PC having a control device such as an MCU (Micro Controller Unit), an input / output device such as a touch panel, and a communication device that transmits and receives signals via the network 3. The network 3 may be wired or wireless. A plurality of host devices 2 may be connected to the network 3.
As described above, the image forming system 1 is configured such that the host apparatus 2 can control the image forming apparatus 10 via the network 3.

In FIG. 2, the outline of the image forming apparatus 10 is shown. The image forming apparatus 10 has an image forming apparatus main body 12, and an openable / closable cover 16 that is rotatable about a rotation fulcrum 14 is provided on the upper part of the image forming apparatus main body 12. A user interface (UI device) 18 such as a touch panel is provided on the front side (left side in FIG. 2) of the opening / closing cover 16. The UI device 18 displays control information and instruction information of the image forming apparatus 10 and accepts input by the user such as instruction information. That is, the user can operate the image forming apparatus 10 via the UI device 18. Note that the UI device 18 may accept only an input from a switch or the like, may perform only an output such as a display, or may be a combination of these.
In addition, an opening / closing detection sensor 19 that detects opening / closing of the opening / closing cover 16 by contacting / separating according to opening / closing of the opening / closing cover 16 is provided near the rotation fulcrum 14.

  In the lower part of the image forming apparatus main body 12, for example, a one-stage paper feeding unit 20 is disposed. The paper supply unit 20 includes a paper supply unit main body 22 and a paper supply cassette 24 that stores paper. A feed roll 26 that feeds paper from the paper feed cassette 24 and a retard roll 28 that sprinkles the fed paper one by one are arranged in the upper vicinity of the rear end of the paper feed cassette 24. Further, a temperature sensor 30 that detects the temperature in the image forming apparatus main body 12 and a humidity sensor 32 that detects the humidity in the image forming apparatus main body 12 are provided above the paper feed cassette 24.

  The conveyance path 34 is a sheet path from the feed roll 26 to the discharge port 36, and the conveyance path 34 is in the vicinity of the back side (right side surface in FIG. 2) of the image forming apparatus main body 12 and is described later from the sheet feeding unit 20. The fixing device 100 is formed substantially vertically. A secondary transfer roll 88 and a secondary transfer backup roll 82, which will be described later, are disposed on the upstream side of the fixing device 100 in the conveyance path 34, and a registration roll 38 is disposed on the upstream side of the secondary transfer roll 88 and the secondary transfer backup roll 82. Is arranged. Further, a discharge roll 40 is disposed in the vicinity of the discharge port 36 of the transport path 34.

  Accordingly, the sheet fed from the sheet feeding cassette 24 of the sheet feeding unit 20 by the feed roll 26 is turned by the retard roll 28 and only the uppermost sheet is guided to the transport path 34 and is temporarily stopped by the registration roll 38. The toner image is transferred between a secondary transfer roll 88 and a secondary transfer backup roll 82, which will be described later, and the transferred toner image is fixed by the fixing device 100, and the discharge port 40 discharges the discharge port 36. Are discharged to a discharge portion 42 provided on the upper portion of the opening / closing cover 16. The discharge portion 42 has a low discharge port portion and is inclined so as to gradually become higher in the front direction (left direction in FIG. 2).

  In the image forming apparatus main body 12, for example, a developing unit 44 such as a rotary developing device is disposed at a substantially central portion. The developing device unit 44 has a developing device unit main body 46, and four developing devices 48 a to 48 d for forming toner images are mounted on the developing device unit main body 46. These developing devices 48a to 48d rotate with the developing device unit main body 46 counterclockwise (counterclockwise in FIG. 2) about the rotation shaft 50. In the developing devices 48a to 48d, cylindrical toner cartridges 52a to 52d that store yellow (Yellow: Y), magenta (Magenta: M), cyan (Cyan: C), and black (Black: K) toners are respectively provided. It is installed. When the toner cartridges 52a to 52d are attached to the developing device unit main body 46 via the developing devices 48a to 48d, the outer surfaces thereof are substantially aligned with the outer periphery of the developing device unit main body 46.

In the developing unit 44, an image carrier 54 made of, for example, a photosensitive member is disposed so as to come into contact with the back side (right side in FIG. 2) of the image forming apparatus 10. That is, the developer unit 44 is prepared in four colors Y, M, C, and K for full-color development, and the developers 48a to 48d are rotated and moved to positions facing the image carrier 54, respectively. Then, the latent image on the image carrier 54 is developed one by one with yellow (Y), magenta (M), cyan (C), and black (K) toner.
In addition, a wireless communication unit 56 is disposed in the vicinity of a position substantially facing the image carrier 54 with the rotation shaft 50 of the developing unit 44 interposed therebetween. The wireless communication unit 56 includes an antenna 58 and performs wireless communication with a memory chip 170 described later.

Below the image carrier 54, there is provided a charging device 60 composed of, for example, a charging roll for uniformly charging the image carrier 54. An image carrier cleaner 62 is in contact with the upstream side of the charging device 60 in the rotation direction of the image carrier 54. The image carrier cleaner 62 includes, for example, a cleaning blade 64 that scrapes off toner remaining on the image carrier 54 after primary transfer, and a waste toner collection bottle 66 that collects toner scraped off by the cleaning blade 64.
Note that the back side (the right side in FIG. 2) of the waste toner collection bottle 66 is formed with a rib or the like, and is curved to form a part of the conveyance path 34 so that the paper is smoothly conveyed.

  An exposure device 68 for writing a latent image on the image carrier 54 charged by the charging device 60 with a light beam such as a laser beam is disposed below the rear side of the developing unit 44. Further, an unused detection sensor 70 such as a reflection type photosensor for detecting whether or not the toner cartridges 52 a to 52 d mounted on the developer unit 44 are unused is disposed above the developer unit 44. Has been. Above the developing unit 44 and the unused detection sensor 70, the toner image visualized by the developing unit 44 is primarily transferred one color at a primary transfer position for each circumference of the intermediate transfer body 74, An intermediate transfer device 72 is provided that superimposes four color toner images on the intermediate transfer member 74 and then transfers them onto a sheet at a secondary transfer position, which will be described later.

The intermediate transfer device 72 includes an intermediate transfer member 74 such as an intermediate transfer belt, a primary transfer roll 76, a wrap-in roll 78, a wrap-out roll 80, a secondary transfer backup roll 82, a scraper backup roll 84, and a brush backup roll 86. Is done. The intermediate transfer member 74 has elasticity, for example, and is stretched substantially flat so as to have a long side and a short side above the developing unit 44. The long side on the upper surface side of the intermediate transfer member 74 is stretched so as to be substantially parallel to, for example, the discharge unit 42 provided on the upper portion of the image forming apparatus main body 12. Further, the intermediate transfer member 74 has an image bearing between a wrap-in roll 78 disposed on the upstream side of the primary transfer roll 76 on the long side on the lower surface side and a wrap-out roll 80 disposed on the downstream side of the primary transfer roll 76. A primary transfer portion (image carrier wrap region) that abuts the body 54 in a wrap shape is provided. The image carrier 54 is wound around a predetermined range and is driven by the rotation of the image carrier 54.
Further, a flat surface portion (short side) is formed on the back side (right side surface in FIG. 2) of the intermediate transfer body 74 by a wrap-out roll 80 and a secondary transfer backup roll 82, and this flat surface portion is subjected to secondary transfer. It faces the transport path 34 as a part.
As described above, the intermediate transfer member 74 is primarily transferred by the primary transfer roll 76 to superimpose the toner image on the image carrier 54 in the order of, for example, yellow, magenta, cyan, and black. Transport toward the transfer section.

  A scraper backup roll 84 assists a scraper 94 described later to scrape off toner remaining on the intermediate transfer body 74 after the secondary transfer, and a brush backup roll 86 removes toner remaining on the intermediate transfer body 74 after the secondary transfer. A brush roll 96 to be described later assists in scraping.

  A secondary transfer roll 88 is opposed to the secondary transfer backup roll 82 of the intermediate transfer device 72 with the conveyance path 34 interposed therebetween. That is, the secondary transfer position in the secondary transfer portion is between the secondary transfer roll 88 and the secondary transfer backup roll 82, and the secondary transfer roll 88 is intermediate with the assistance of the secondary transfer backup roll 82. The toner image primarily transferred to the transfer body 74 is secondarily transferred to the paper at the secondary transfer position. Here, the secondary transfer roll 88 is separated from the intermediate transfer member 74 while the intermediate transfer member 74 rotates three times, that is, while the three color toner images of yellow, magenta, and cyan are conveyed. When the image is transferred, it contacts the intermediate transfer member 74. In addition, a predetermined potential difference is generated between the secondary transfer roll 88 and the secondary transfer backup roll 82. For example, when the secondary transfer roll 88 is set to a high voltage, the secondary transfer backup backup is performed. The roll 82 is connected to a ground (GND) or the like.

  An image density sensor 90 such as a reflective photosensor is disposed on the upstream side of the secondary transfer position so as to face the intermediate transfer body 74 with the conveyance path 34 interposed therebetween. The image density sensor 90 reads a toner patch formed on the intermediate transfer body 74 and detects the density of the image formed on the intermediate transfer body 74.

  An intermediate transfer member cleaner 92 is provided in contact with the end of the intermediate transfer member 74 on the side opposite to the image carrier. The intermediate transfer body cleaner 92 includes, for example, a scraper 94 that scrapes and cleans toner remaining on the intermediate transfer body 74 after the secondary transfer, a brush roll 96 that further scrapes off toner remaining after cleaning by the scraper 94, and a scraper 94 and The waste toner collecting bottle 98 collects the toner scraped off by the brush roll 96. The scraper 94 is made of, for example, a thin plate of stainless steel, and a voltage having a polarity opposite to that of the toner is applied. The brush roll 96 is made of, for example, an acrylic brush that has been subjected to a conductive treatment. Further, while the intermediate transfer member 74 conveys the toner image, the scraper 94 and the brush roll 96 are separated from the intermediate transfer member 74 and come into contact with the intermediate transfer member 74 at a predetermined timing. Has been.

A fixing device 100 is disposed above the secondary transfer position. The fixing device 100 includes a heating roll 102 and a pressure roll 104, fixes the toner image secondarily transferred to the paper by the secondary transfer roll 88 and the secondary transfer backup roll 82, and fixes the toner image to the discharge roll 40. Transport toward.
Further, in the image forming apparatus main body 12, a control unit 106 that controls each part constituting the image forming apparatus 10 is disposed.

  The image carrier unit 108 is obtained by integrating the image carrier 54, the charging device 60, and the image carrier cleaner 62. Further, the image forming unit 110 is obtained by integrating the image carrier unit 108, the intermediate transfer device 72, and the intermediate transfer body cleaner 92. The fixing unit 112 is an integrated unit of the fixing device 100 and the discharge roll 40.

As shown in FIG. 3, the image forming unit 110 is detachable from the image forming apparatus main body 12, and is attached / detached by opening the opening / closing cover 16. The image carrier unit 108 is detachable from the image forming unit 110.
The toner cartridges 52a to 52d are attached to and detached from the developing devices 48a to 48d attached to the developing device unit main body 46 when the opening / closing cover 16 is opened and positioned on the front side (opening / closing cover 16 side). It is like that. The developing devices 48a to 48d are detachably attached to the developing device unit main body 46 when the opening / closing cover 16 is opened and positioned on the front side (opening / closing cover 16 side).
The fixing unit 112 is detachably attached to the image forming apparatus main body 12 by removing an upper cover (not shown). Other units such as the developing unit 44 and the paper feeding unit 20 are also detachable from the image forming apparatus main body 12.

In this way, each unit can be replaced by the user. On the other hand, when a user attaches a replaceable unit to the image forming apparatus 10, if a non-genuine product for the image forming apparatus 10 is attached, good image quality cannot be maintained or operation cannot be guaranteed. May cause problems. This is because the image forming apparatus 10 is controlled according to the characteristics of members used in the image forming apparatus 10. Therefore, a sensor that detects a predetermined condition is provided in a unit that can be replaced by the user.
Hereinafter, when any one of a plurality of components such as the developing devices 48a to 48d is indicated without being specified, it may be simply abbreviated as “developing device 48” or the like.

Next, an example of a replaceable unit having a sensor that detects a predetermined condition will be described.
4 and 5, the configuration of the developing device 48, which is a replaceable unit, is shown.
The developing unit 48 includes a developing roll 116 as a developer carrying member, a first auger 118, a second auger 120, a third developing unit disposed on the image carrier 54 side of the developing device housing (developing device main body) 114. The auger 122 and the layer thickness regulating member 124 are provided, and a two-component developer composed of, for example, nonmagnetic toner and a magnetic carrier is accommodated.

The developing device housing 114 agitates the toner and the carrier, a shutter 126 that opens and closes a toner receiving port 134 and a developer discharge port 140, which will be described later, a cylindrical intake conveyance path 128 that conveys the toner taken in from the toner cartridge 52, and the toner. And cylindrical developer conveyance paths 130 and 132 for conveyance.
The intake conveyance path 128 includes a toner receiving port 134 that receives toner from the toner cartridge 52 and a toner supply port 136 that supplies toner to the developer conveyance path 130, and a first auger 118 is arranged in the intake conveyance path 128. It is installed. The first auger 118 conveys the toner received from the toner cartridge 52 through the conveyance path 128 to the developer conveyance path 130. Further, the amount of toner supplied from the toner cartridge 52 to the developing device 48 is adjusted by adjusting the rotation of the first auger 118. Therefore, the amount of toner used (the amount of toner cartridge 52 used) may be calculated by accumulating the driving time or the rotational speed of the first auger 118 by the CPU 202 described later. The amount of toner used is stored as a charge in a capacitor or the like when the exposure device 68 writes an electrostatic latent image on the image carrier 54 as a charge, and the CPU 202 counts the number of times the stored charge reaches a predetermined amount. May be calculated.

  In the intake conveyance path 128, a toner presence / absence detection sensor 138 is provided between the toner receiving port 134 and the toner delivery port 136. The toner presence / absence detection sensor 138, for example, includes toner between two points in the intake conveyance path 128. By detecting the change in resistance value due to the presence or absence of toner, the presence or absence of toner in the take-in conveyance path 128 is detected. The toner presence / absence detection sensor 138 may be a piezoelectric element.

The developer transport path 130 has a developer discharge port 140 for discharging excess developer to the toner cartridge 52, and the second auger 120 is disposed in the developer transport path 130. The second auger 120 stirs and mixes the toner conveyed via the take-in conveyance path 128 and the carrier, and conveys the mixture to the developer conveyance path 132.
A third auger 122 is disposed in the developer transport path 132. The third auger 122 stirs and conveys the developer conveyed through the developer conveyance path 130 and supplies it to the developing roll 116.
A partition plate 143 is provided between the developer transport path 130 and the developer transport path 132, and the developer transport path 130 and the developer transport path 132 are connected to both ends of the partition plate 143. A passage (not shown) is provided. Accordingly, when the second auger 120 and the third auger 122 convey the developer in alternate directions, the toner is frictionally charged to a predetermined charge amount by the carrier and circulates in the developer housing 114. Has been. Further, the deteriorated developer is discharged from the developer discharge port 140 to the toner cartridge 52 at a predetermined timing, so that the total life of the developer is extended (trickle development method).

  The shutter 126 has openings 144 and 146, and the opening 144 overlaps the toner receiving port 134 to form a toner passage from the toner cartridge 52 to the developing device 48, and the opening 146 is the developer discharge port 140. To form a passage of excess developer from the developing device 48 to the toner cartridge 52.

  The developing roll 116 carries toner and contacts the image carrier 54 to develop the electrostatic latent image carried on the image carrier 54 with toner. The layer thickness regulating member 124 regulates the layer thickness of the toner carried on the developing roll 116.

6 and 7 show the configuration of the toner cartridge 52 which is a replaceable unit.
The toner cartridge 52 includes a toner cartridge main body 150 and a rotating portion 152 provided at one end of the toner cartridge main body 150 in the longitudinal direction.
The toner cartridge main body 150 is formed in a cylindrical shape, and has a substantially cylindrical portion in which the agitating / conveying member 154 is disposed. The toner cartridge body 150 gradually extends from the substantially cylindrical portion in a direction substantially perpendicular to the longitudinal direction. It is formed so that the narrowed portion is integrated. The toner cartridge main body 150 is configured such that when the toner cartridge 52 is attached to the developing device unit main body 46 via the developing device 48, the outer surface substantially coincides with the outer periphery of the developing device unit main body 46.

  A toner storage space 156 for storing toner to be supplied to the developing device 48 is formed in the toner cartridge main body 150. In the toner storage space 156, the above-described stirring and conveying member 154 is provided. The agitating / conveying member 154 is wound, for example, in a spiral shape, agitates the toner in the toner storage space 156, and conveys the toner toward the toner receiving port 134 of the developing device 48.

  The rotating portion 152 includes a rotating portion main body 154 and a cylindrical tube portion 156 provided in the rotating portion main body 154 and formed integrally with the toner cartridge main body 150. The cylindrical part 156 is sealed by the cylindrical part side wall 160 on the side surface part 158 side of the rotating part main body 154, and an isolation wall 162 is provided inside. A developer recovery space 164 for recovering excess developer from the developing device 48 is formed on the side wall 160 side of the isolation wall 162, and the above-described toner storage is provided on the side of the anti-cylinder side wall 160 of the isolation wall 162. A space 156 is formed to extend.

The rotating part main body 154 has a window-like window part 166 covered with a transparent member, and the inside is formed in a cylindrical shape so as to rotate along the outer surface of the cylindrical part of the cylindrical part 156. Yes. Further, a reflection member 168 such as a white tape is attached to the outer surface of the cylindrical portion of the cylindrical portion 156. When the toner cartridge 52 is mounted on the developing device 48 and the rotation portion main body 154 rotates, the reflection member 168 is exposed through the window 166. Further, when the developing unit 44 to which the toner cartridge 52 is mounted rotates in the image forming apparatus main body 12, the exposed reflecting member 168 is positioned so as to face the unused detection sensor 70 fixed to the image forming apparatus main body 12. It is supposed to pass. As described above, the unused detection sensor 70 is, for example, a reflection type photosensor, and when the reflection member 168 of the toner cartridge 52 mounted on the developing unit 44 passes a position facing the unused detection sensor 70. In addition, the reflection member 168 detects whether the toner cartridge 52 is unused or not by detecting the amount of reflection that changes due to toner contamination.
A memory chip 170 is attached to the side surface portion 158 of the rotating portion main body 154. The memory chip 170 has an antenna 172 and performs wireless communication with the wireless communication unit 56 provided on the image forming apparatus main body 12 side.

Next, regarding the wireless communication unit 56 and the memory chip 170, respective circuit configurations and communication performed between them will be described.
FIG. 8 is a block diagram illustrating a circuit configuration of the wireless communication unit 56. FIG. 9 is a block diagram showing a circuit configuration of the memory chip 170.
As shown in FIG. 8, the circuit of the wireless communication unit 56 includes a transmission / reception control unit 174, a modulation circuit 176, a transmission circuit 178, a reception circuit 180, a demodulation circuit 182, and an antenna 58. In the wireless communication unit 56, the transmission / reception control unit 174 controls the operation of each component of the wireless communication unit 56. Then, the transmission / reception control unit 174 outputs the data input from the control unit 106 to the modulation circuit 176. Further, the transmission / reception control unit 174 outputs the data received by the reception circuit 180 and demodulated by the demodulation circuit 182 to the control unit 106. The modulation circuit 176 modulates data input from the transmission / reception control unit 174 and outputs the data to the transmission circuit 178. The transmission circuit 178 outputs a radio signal including data to be stored in the memory chip 170 and a clock signal to the memory chip 170 via the antenna 58.

  The reception circuit 180 receives a signal transmitted from the memory chip 170 via the antenna 58 and outputs the signal to the demodulation circuit 182. The demodulating circuit 182 demodulates the data transmitted from the memory chip 170 from the change in the signal input from the receiving circuit 180 and outputs the demodulated data to the transmission / reception control unit 174.

As shown in FIG. 9, the circuit of the memory chip 170 includes a unit NVM (Non Volatile Memory) 184, a transmission logic circuit 186, a reception logic circuit 188, a transmission circuit 190, a reception circuit 192, a clock recovery circuit 194, A power supply unit 196 and an antenna 172 are included.
When a radio wave signal is transmitted from the wireless communication unit 56 to the memory chip 170, the reception circuit 192, the clock recovery circuit 194, and the power supply unit 196 accept the radio wave signal via the antenna 172. In the memory chip 170, when the power supply unit 196 receives the radio wave signal, the power source unit 196 rectifies the current generated by the electromagnetic induction by the radio wave signal and supplies power necessary for the operation to each component of the memory chip 170. . The memory chip 170 may be configured to receive power from the main body 40 when a voltage higher than, for example, a voltage generated by the power supply unit 196 is required. For example, the power may be provided in a non-contact manner from an alternating current supplied to the developing unit 44 by further providing a coil for power supply in the memory chip 170.

  When receiving the radio signal, the clock recovery circuit 194 recovers the clock signal and outputs it to each circuit constituting the memory chip 170. When receiving the radio signal, the reception circuit 192 outputs a signal such as data included in the radio signal to the reception logic circuit 188 in synchronization with the clock signal input from the clock recovery circuit 194. The reception logic circuit 188 demodulates a signal such as data input from the reception circuit 192 in synchronization with the clock signal input from the clock recovery circuit 194, and outputs the demodulated signal to the unit NVM 184.

  The unit NVM 184 is a writable nonvolatile memory. When the signal input from the reception logic circuit 188 indicates data writing in synchronization with the clock signal input from the clock recovery circuit 194, the unit NVM 184 When data is written (stored) and data read is indicated, the data stored in the unit NVM 184 is output to the transmission logic circuit 186. The nonvolatile memory included in the unit NVM 184 may be, for example, a flash ROM, EEPROM, or FeRAM (ferroelectric memory).

  The transmission logic circuit 186 modulates the data input from the unit NVM 184 in synchronization with the clock signal input from the clock recovery circuit 194 and outputs the modulated data to the transmission circuit 190. The transmission circuit 190 transmits the signal input from the transmission logic circuit 186 to the wireless communication unit 56 as a radio wave signal via the antenna 172 in synchronization with the clock signal input from the clock recovery circuit 194.

  Note that a signal transmitted / received as a radio wave signal may be encrypted and then converted to a radio wave signal to be transmitted / received. Further, for example, an authorized user may rewrite the contents of the unit NVM 184 from a device other than the control unit 106 using an encrypted radio wave signal.

  FIG. 10 shows the positional relationship between the wireless communication unit 56 and the memory chip 170 performing wireless communication. As described above, the toner cartridge 52 is attached to each of the developing devices 48, and moves when the developing device unit 44 (FIG. 2) rotates about the rotation shaft 50. The wireless communication unit 56 is fixed to the image forming apparatus main body 12 in the vicinity of the side of the developing unit 44 so that the memory chips 170 that are moved by the rotation of the developing unit 44 are sequentially substantially opposed to each other. In order to enable wireless communication with any one of the above, wireless communication is performed in a stopped state in which the developing unit 48 is controlled to move to a substantially opposite position. In addition, the wireless communication unit 56 is configured to confirm the start of data transmission / reception by receiving an acknowledge signal transmitted from the memory chip 170 with respect to, for example, a radio signal output from the wireless communication unit 56.

FIG. 11 shows the configuration of the image carrier unit 108 that is a replaceable unit.
As described above, the image carrier unit 108 is obtained by integrating the image carrier 54, the charging device 60, and the image carrier cleaner 62. For example, the image carrier unit 108 is disposed at an upper portion in the image carrier cleaner 62. A waste toner full sensor 198 and a float 200 disposed below the waste toner full sensor 198 are provided. The waste toner full sensor 198 has an optical path in which the light receiving unit provided on the other side receives light emitted from the light emitting unit provided on one side, and the control unit 106 determines whether the light receiving unit has received light. Output. The float 200 rises when the amount of waste toner collected in the waste toner collection bottle 66 from the image carrier 54 exceeds a predetermined amount. When the waste toner collection bottle 66 becomes full of waste toner, the waste toner is collected. The optical path of the full sensor 198 is blocked. As described above, the image carrier unit 108 detects whether or not the waste toner collection bottle 66 is full by the waste toner full sensor 198 and the float 200, and outputs it to the control unit 106.
Further, the waste toner full sensor 198 and the float 200 may be provided in the intermediate transfer body cleaner 92 to detect whether or not the waste toner collection bottle 98 is full.
As described above, the replaceable unit having a sensor or the like that detects a predetermined condition outputs a result detected by the sensor or the like to the control unit 106, and the control unit 106 performs an image based on the input detection result. Each part constituting the forming apparatus 10 is controlled.

Next, the configuration of the control unit 106 will be described in detail.
FIG. 12 is a block diagram illustrating the configuration of the control unit 106 and each unit connected to the control unit 106.
The control unit 106 includes a CPU 202, a storage unit 204, a sensor interface (sensor I / F) circuit 206, a wireless communication unit control circuit 208, a communication interface (communication I / F) circuit 210, a user interface (UI) control circuit 212, an image. A drawing circuit 214, a process control circuit 216, an image forming unit interface (image forming I / F) circuit 218, a paper transport unit control circuit 220, and the like, which can input and output signals to and from each other via the system bus 222. It is configured to be able to.
The CPU 202 transmits and receives signals to and from each part constituting the control unit 106 via the system bus 222 and controls each part constituting the control part 106.

  The storage unit 204 includes a program ROM 224, a RAM 226, and a main body NVM (Non Volatile Memory) 228, and stores information necessary for controlling the image forming apparatus 10. The program ROM 224 may be a flash ROM, for example, and the stored contents may be updated. The RAM 226 is composed of, for example, an SRAM and stores temporary information such as drawing data input from the image drawing circuit 214. The main body NVM 228 includes an electrically rewritable nonvolatile memory such as an EEPROM or a flash ROM. The main body NVM 228 is a rewritable storage device. If the image forming apparatus 10 can hold data even when the image forming apparatus 10 is turned off, the main body NVM 228 is an SRAM, HDD (Hard Disk Drive) backed up by a battery or the like. Or an optical memory.

  The sensor I / F circuit 206 receives detection results from the open / close detection sensor 19, the temperature sensor 30, the humidity sensor 32, the unused detection sensor 70, the toner presence / absence detection sensor 138, the image density sensor 90, and the waste toner full sensor 198, The data is output to the CPU 202 via the system bus 222. The wireless communication unit control circuit 208 transmits and receives signals to and from the four memory chips 170 provided in each of the toner cartridges 52 a to 52 d via the wireless communication unit 56, and the CPU 202 and the storage unit via the system bus 222. Signals are transmitted to and received from each other, and the respective memory chips 170 are connected to the CPU 202 and the storage unit 204.

  The communication I / F circuit 210 transmits / receives a signal to / from the host apparatus 2 via the network 3 and transmits / receives a signal to / from the CPU 202 via the system bus 222. Connect. The UI control circuit 212 transmits / receives a signal to / from the UI device 18 and transmits / receives a signal to / from the CPU 202 via the system bus 222 to connect the UI device 18 to the CPU 202.

  The image drawing circuit 214 draws an image based on an image forming signal input from the host device 2 or the like, and outputs the image to the CPU 202 and the RAM 226. The process control circuit 216 refers to setting values (to be described later) stored in the storage unit 204 together with the CPU 202, and connects the exposure device 68, the image forming unit 110, the developing unit 44, and the like via the image forming I / F circuit 218. The image forming unit 230 including the image forming unit 230 is controlled. The paper transport unit control circuit 220 controls the paper transport unit 232 including the feed roll 26, the retard roll 28, and the registration roll 38 together with the CPU 202.

  Since the CPU 202 can compare the data stored in the storage unit 204 with the data stored in the unit NVM 184 and determine the state of the toner cartridge 52 to which the memory chip 170 is attached, the memory Even if the chip 170 does not have a sensor, it constitutes a part of the detection means.

Next, details of data stored in the program ROM 224, the main body NVM 228, and the unit NVM 184 will be described.
FIG. 13 shows an example of data stored in the program ROM 224, the main body NVM 228, and the unit NVM 184.
The program ROM 224 is provided with a program area 234, a set value area 236, and the like. In the program area 234, an execution program 238 for operating the image forming apparatus 10 is stored. In the set value area 236, each life threshold value 240, each life threshold value reaching set number 242, temperature parameter group 244, humidity parameter group 246, toner density parameter group 248 and determination time setting value 252, information printing Time 253 and the like are stored.

Each life threshold value 240 includes the life (life threshold value) of each replaceable unit of the image forming apparatus 10. Each lifetime threshold reaching setting number 242 includes the number of times each replaceable unit of the image forming apparatus 10 is allowed to reach the lifetime threshold. The temperature parameter group 244 includes parameters relating to control of the temperature of the image forming apparatus 10. The humidity parameter group 246 includes parameters related to control of the image forming apparatus 10 with respect to humidity. The toner density parameter group 248 includes parameters relating to toner density control in the developing device 48. Whether the determination time set value 252 is a genuine product or a non-genuine product for each replaceable unit of the image forming apparatus 10 by the CPU 202 in the process of the image forming apparatus 10 preparing for printing in accordance with the operation mode. This includes the period (determination time) until the start of the determination.
As will be described later, the information printing time 253 stores the time when the replacement unit is a non-genuine product and displays that fact, and when the power is turned on, when a predetermined number of sheets are printed, when the internal is specified, when the external is specified and so on.

The main body NVM 228 is provided with a corresponding unit information area 254, a main body side update area 256, and the like.
In the corresponding unit information area 254, a corresponding model code 258 and a corresponding country code 260 are stored. The corresponding model code 258 stores a model table (data) indicating that each of the replaceable units of the image forming apparatus 10 is a model compatible with the image forming apparatus 10. The corresponding country code 260 stores a table (data) of each country in which different specifications are set for each country for each replaceable unit of the image forming apparatus 10.

  In the main body side update area 256, the mounting history 262 of each unit, each life count value 264 on the main body side, each life threshold value arrival count 266 on the main body side, each detection history 268, each operation mode history 270, and the like are stored. ing. The mounting history 262 of each unit includes the mounting history of each replaceable unit of the image forming apparatus 10. The initial state (initial value) of the mounting history 262 of each unit stores that a genuine product is mounted. Each life count value 264 on the main body side includes a life count value (amount used from the start of use until the present) of each replaceable unit of the image forming apparatus 10. The usage amount of each unit may be calculated from the accumulated operation time of each unit. Each life threshold arrival frequency 266 on the main body side includes the life threshold arrival frequency for each replaceable unit of the image forming apparatus 10. Each detection history 268 includes a history of detection results detected by sensors provided in the image forming apparatus 10. Each operation mode history 270 includes a history of operation modes applied to each replaceable unit of the image forming apparatus 10.

The unit NVM 184 is provided with a unit information area 272, a unit side update area 274, and the like.
The unit information area 272 includes a model code 276 indicating the model, a country code 278 indicating the country for which the specification is set, a unit-specific serial number 280, a manufacturing date 282, a lifetime threshold 284 indicating the lifetime of the unit, In addition, process parameters 286 for process control are stored.
The unit-side update area 274 includes a life count value 288 indicating the usage amount from the start of use of the toner cartridge 52 to the present time, and a life threshold value indicating the number of times the life threshold value stored in the life threshold value 284 has been reached. Stored are a value arrival count 290, related history information 292, flag information 294 for discriminating between new and recycled products, and the like. The related history information 292 includes a history of related information that can be used for grasping the status of the toner cartridge 52, such as the number of rotations of the image carrier 54, for example.

  In the image forming apparatus 10 configured as described above, when an image forming signal is sent, the image carrier 54 is uniformly charged by the charging device 60, and the charged image carrier 54 has an exposure device based on the image signal. A light beam is emitted from 68. The light beam from the exposure device 68 exposes the surface of the image carrier 54 to form a latent image.

  The latent image carried on the image carrier 54 is developed by the developing unit 44 at the development position. In the developing unit 44, the developing units 48a to 48d are supplied with yellow, magenta, cyan, and black toner from the toner cartridges 52a to 52d, respectively. Further, the developer excessively supplied to the developing devices 48a to 48d is collected in the toner cartridges 52a to 52d, respectively. The toner images developed for each color by the developing devices 48 a to 48 d of the developing device unit 44 are primarily transferred to the intermediate transfer body 74 in a superimposed manner. In the primary transfer, waste toner remaining on the image carrier 54 is scraped off and collected by the image carrier cleaner 62.

  On the other hand, the paper accommodated in the paper feed cassette 24 is fed out by the feed roll 26 by a paper feed signal or the like, is turned by the retard roll 28 and guided to the transport path 34, and is temporarily stopped by the registration roll 38. As a result, it is guided between the secondary transfer roll 88 and the secondary transfer backup roll 82. When the sheet is guided between the secondary transfer roll 88 and the secondary transfer backup roll 82, the toner image superimposed on the four colors on the intermediate transfer body 74 by the primary transfer becomes the secondary transfer roll 88 and the secondary transfer backup. Secondary transfer is performed on the paper by the roll 82. Waste toner remaining on the intermediate transfer member 74 after the secondary transfer is scraped off and collected by the intermediate transfer member cleaner 92.

  The sheet on which the toner image has been transferred is guided to the fixing device 100, and the toner image is fixed by the thermal pressure of the heating roll 102 and the pressure roll 104. The sheet on which the toner image is fixed is discharged from the discharge port 36 to the discharge unit 42 by the discharge roll 40. The control unit 106 stores the life count value of the toner cartridge 52 in the unit NVM 184 and the main body NVM 228.

FIG. 14 is a graph showing changes in developer charging ability with respect to the developer usage (life count value) stored in the main body NVM 228.
FIG. 15 is a graph showing a setting for correcting a change in the charging ability of the developer, and is a graph showing a setting of the image density with respect to the usage amount of the developer.
FIG. 16 is a graph showing the result of correction by the setting shown in FIG. 15, where (A) shows the corrected toner density, and (B) shows the corrected image density.

The toner contained in the toner cartridge 52 is frictionally charged to a predetermined charge amount by a carrier in the developing device 48. When the developer is used, the charging ability of the developer decreases according to the amount of the developer used, as in the characteristics of the genuine toner P shown in FIG.
Therefore, even if the image forming apparatus 10 adopts the trickle developing method, in order to maintain the image quality of the image formed on the sheet at a predetermined level, the toner density in the developing device 48 and the intermediate transfer member 74 are maintained. The setting for the image density is corrected.
For example, the CPU 202 detects the image density with the image density sensor 90, and controls the rotational drive of the first auger 118 if the density is high, thereby reducing the toner density by reducing the amount of toner supplied into the developing device 48. Reduce the image density. If the density is low, the rotational drive of the first auger 118 is controlled to increase the amount of toner supplied into the developing device 48 and increase the toner density to increase the image density. Usually, a pattern having a halftone density is used as the image density detection pattern.
However, since the developing performance is improved and the image density is increased when the charging ability of the toner is lowered, if the above control is executed as it is, the toner density is excessively lowered and the maximum image density is lowered.
Therefore, the toner density parameter group 248 used for the toner density control based on the image density detection result by the image density sensor 90 does not reduce the density of the maximum image transferred to the paper even when the charging ability of the developer is lowered. The stored toner density control setting value in the developing device 48 is corrected so as to increase in accordance with the amount of developer used. The CPU 202 rotates the first auger 118 in accordance with the corrected setting value (FIG. 15: setting S corresponding to the toner P), so that the toner density has a desired predetermined value as shown in FIG. The toner density is maintained so that it does not fall below the value.
As a result, as shown in FIG. 16B, the image density can be maintained so that the image density does not become a predetermined value or less of the specification.

  On the other hand, when a toner cartridge other than a genuine product having substantially the same configuration as that of the toner cartridge 52 containing toner X or toner Y other than a genuine product for the image forming apparatus 10 is mounted, FIG. As shown, it is predicted that the toner will exhibit a characteristic different from the characteristic P of the genuine toner. Therefore, in order to improve the image quality of the image formed on the paper, a corrected setting value different from the setting S corresponding to the toner P is necessary. Therefore, for example, when the toner X or toner Y is something other than a genuine product in which the toner X or the like is stored, the set value change amount (slope) of the toner density is increased or decreased (m1, m2: FIG. 15), and the limit value is set. Increase / decrease (m1, m2), change initial value (use amount = 0) (m3), do not change set value according to use amount (m4), and change the initial value, for example, use amount The correction for the usage amount of the developer is changed by combining the changing conditions such as not changing the set value according to the condition (m5). This change is performed by the user selecting via the UI device 18 as an operation mode different from the operation mode corresponding to the genuine product.

  Further, based on the data stored in the storage unit 204 and the unit NVM 184, the image forming apparatus 10 also controls display by the UI device 18 and the like. For example, under the control of the CPU 202, the UI device 18 displays the remaining amount of toner when the toner cartridge 52 is a genuine product, and displays the amount of toner used when the toner cartridge 52 is other than a genuine product. indicate. This is because the remaining amount of toner cannot be calculated when the toner is not a genuine product because the toner amount is unknown.

Next, a method for controlling the image forming apparatus 10 will be described.
FIG. 17 is a block diagram showing a part of the software configuration stored as the execution program 238 in the program ROM 224. The execution program 238 includes a genuine product / non-genuine product determination unit 300 that determines whether the replacement unit is a genuine product or a non-genuine product. Whether the replacement unit is a genuine product or a non-genuine product is determined based on, for example, one or a plurality of pieces of information (1) to (5) below.
(1) User input information When it is possible to input whether the replacement unit is a genuine product or a non-genuine product from the host device 2 or the UI device 18 of the image forming apparatus 10 described above, based on the input information Determine.
(2) Presence / absence of memory chip Although a genuine product includes the memory chip 170, there is a product other than the genuine product that does not include the memory chip 170. Therefore, even if a response request is issued from the wireless communication unit 56, if there is no response from the replacement unit side, it is determined that it is not a genuine product.
(3) Code information The model code 276 and country code 278 of the unit NVM 184 are compared with the corresponding model code 258 and the corresponding country code 260 of the main body NVM 228 to determine whether or not there is an identity. In this determination, not only the case where each is completely the same, but also an allowable range (a case where the model code is similar, a case where the country code is similar, etc.) can be provided within a certain range.
(4) Amount Used When the life count value of the memory chip 170 exceeds the life threshold value 240 of the program ROM 224, for example, it can be determined that it is something other than a genuine product.
(5) Detection of Control State As described above, there are cases where the charging characteristics of toner according to the amount of use differ between genuine products and those other than genuine products. Therefore, if the toner density does not reach the predetermined value even after performing the predetermined correction, it can be determined that something other than the genuine product is mounted.

In addition, the execution program 238 includes an information print control unit 302 that controls whether to print information on paper.
In addition, the execution program 238 includes an information printing time selection unit 304 that selects at what timing the information on the paper is printed. The information printing time selection unit 304 includes, for example, a power-on selection unit 306 that is set to always print when the power is turned on, a selection unit 308 that is set to print every time a predetermined number of sheets is printed, and the UI device 18. An internal designation selection unit 310 that prints when designated, an external designation selection unit 312 that prints when designated from the host device 2, and the like. For example, when the predetermined number of sheets is selected, the selection unit 308 prints information on a sheet when the sheet is printed on 200 sheets. In the case of a user who does not turn off the power, information can be printed for every predetermined number of sheets and can be recognized by the user.
Furthermore, the execution program 238 includes a charging control unit 314 that controls whether or not to charge for printing paper.

FIG. 18 is a flowchart (S10) showing a control flow when the replacement unit is mounted.
When the replacement unit is mounted, it is first determined in step 100 (S100) whether the replacement unit is a genuine product or a non-genuine product. If it is determined to be a genuine product, the process proceeds to step 102 (S102), printing is performed in the above-described genuine product mode, a charging process is performed in step 104 (S104), and the process is terminated.

  If it is determined in step 100 (S100) that the product is not a genuine product, that is, the replacement unit is a product other than a genuine product, in the next step 106 (S106), it is determined whether or not information printing is to be performed. In step 106 (S106), as shown in FIG. 19A, an information print selection screen 318, a next selection key 320, and a non-print key 322 are displayed on the display screen 316 of the UI device 18, and the next selection is performed. When the key 320 is pressed, the determination at step 106 (S106) is Y, and when the non-print key 322 is pressed, the determination at step 106 (S106) is N.

  If it is determined in step 106 (S106) that information is to be printed (Y), the process proceeds to the next step 108 (S108). In this step 108 (S108), as shown in FIG. On the display screen 316 of the apparatus 18, for example, a selection key 324 at power-on, a selection key 326 for every predetermined number, and a selection key 328 at designation are displayed, and the user can select any one. In addition, an OK key 328 and a return key 332 are displayed on the display screen 316 of the UI device 18. When the user selects one of the selection keys 324, 326, and 328 and presses the OK key 330, the selection is confirmed. Proceed to the next step 110 (S110). On the other hand, when the user presses the return key 332, the screen returns to the screen of FIG. When the power ON selection key 324 is selected, every time the image forming apparatus 10 is turned on, the replacement unit is printed on a sheet that is not a genuine product. When the selection key 326 is selected for every predetermined number of sheets, for example, every time 200 sheets are printed, the fact that a non-genuine product is mounted on the replacement unit is printed on a sheet. When the designation selection key 328 is selected, it immediately prints on the sheet that a non-genuine product is mounted on the replacement unit.

  In step 110 (S110), it is determined whether or not it is the information printing time set in step. In step 110 (S110), if it is determined that it is the information printing time, the process proceeds to step 112 (S112), information (information indicating that the replacement unit is other than a genuine product) is added, and the next step In step 114 (S114), printing is performed in the non-genuine product mode described above. In step 116 (S116), non-billing processing is performed, and the processing ends. The information indicating that the replacement unit is a non-genuine product is printed in order to alert the user. Therefore, in step 116 (S116), non-billing processing (processing not charging for printing) is performed. Is what you do.

  On the other hand, if it is determined in step 110 (S110) that it is not the information printing time, the process proceeds to step 118 (S118), printing is performed in a mode other than the genuine product described above, and the process proceeds to the next step 120 (S120) for charging. Processing is performed and the processing is terminated.

FIG. 20 is a flowchart (S20) showing a first modification of the above embodiment.
In the above embodiment, the information print setting process is performed when the replacement unit is mounted. However, in this modification, the information print setting process is performed during the initial setting.
That is, at the time of initial setting, first, in step 200 (200), it is determined whether or not information printing is to be performed. If it is determined to print information, the process proceeds to the next step 202 (S202) to select information printing. Then, the process proceeds to the next step 204 (S204), the information print setting is stored in the main body NVM 228, for example, and the process ends. On the other hand, if it is determined in step 200 (S200) that information is not printed, if it is determined that the replacement unit is a recycled product when the replacement unit is mounted, step 202 (S202) is skipped. In step 204 (S204), the main body NVM 228 stores information not to print information, and the process ends. In step 204 (S204), the setting information stored in the main body NVM 228 is read, and printing is executed in accordance with the setting information.

Next, a second modification of the image forming apparatus according to the embodiment of the present invention will be described. In the second modification, information printing is set from the host device 2.
The program area 234 included in the image forming apparatus 10 further includes a web server (also referred to as a WWW server or an http server). The web server communicates with the host device 2 by http (HyperText Transfer Protocol).
FIG. 21 is a diagram showing a hardware configuration of the host apparatus 2 shown in FIG.
As shown in FIG. 21, the host device 2 includes a main body 400 including a CPU 402 and a memory 404, a display / input device 410 including a liquid crystal display / keyboard and a mouse (not shown), and a recording device 408 such as an HDD / CD device. And a communication device 406 that performs communication with the network. That is, the host device 2 includes a configuration unit as a general computer capable of communication via a network.

FIG. 22 is a diagram showing the configuration of the client program 420 that operates on the host device 2 shown in FIG.
As illustrated in FIG. 27, the client program 420 includes a user interface (UI unit) 422, a printer driver 424, a web browser 426, and a network communication control unit 428.
For example, the client program 420 is supplied to the recording device 408 of the host device 2 via the recording medium 412, loaded into the memory 404, and executed. With these components, the client program 420 provides a user who uses the host device 2 with a status browsing function, a setting change function, and the like of the image forming apparatus 10, and is transmitted from the image forming apparatus 10 via the network 3. Displayed messages.

In the client program 420, the UI unit 422 receives a user operation on the display / input device 410 and controls processing of each component of the client program 420. The UI unit 322 displays data received by the printer driver 424 or the web browser 426 via the network 3 to the user.
The printer driver 424 provides the user of the host apparatus 2 with a status browsing function and a setting function of the image forming apparatus 10. The printer driver 424 provides a message notification function from the image forming apparatus 10. The client program 420 may include a utility program having a function equivalent to that of the printer driver 424. The utility program is not specialized for a specific image forming apparatus, but has a function for browsing and setting a state of an apparatus connected to a network.
The web browser 426 provides a state browsing function and a setting function of the image forming apparatus 10 to the user of the host apparatus 2 via a web server that operates on the image forming apparatus 10.
The network communication control unit 428 controls communication with the image forming apparatus 10 connected via the network 3 illustrated in FIG.

  The setting function provided from the printer driver 424 described above includes an information print setting function. FIG. 23 shows an information print setting screen 430 provided from the printer driver 424. The information print setting screen 430 is provided with a check box 432 for selecting when the power is turned on, a check box for selecting every predetermined number of sheets 434, and a check box for selecting when specifying 436, and selecting one of them and pressing the OK button 438. Accordingly, the information printing time is set.

  In the above embodiment, the case where the replacement unit is a toner cartridge has been described. However, the present invention is not limited to this and can be applied to other replacement units. In the above embodiment, one replacement unit has been described. However, in the case of a color image forming apparatus, it is determined whether or not a recycled product is used for each color, and recycling is performed for each color. An indication that the product is being used may be printed on paper.

1 is a schematic diagram of an image forming system according to an embodiment of the present invention. 1 is a side view illustrating an outline of an image forming apparatus according to an embodiment of the present invention. FIG. 3 is a side view illustrating a state in which a replaceable unit of the image forming apparatus according to the embodiment of the invention is detached from the image forming apparatus main body. 1 is a perspective view showing a developing device of an image forming apparatus according to an embodiment of the present invention. FIG. 2 is a schematic diagram illustrating a cross section of a developing device of the image forming apparatus according to the exemplary embodiment of the present invention. FIG. 3 is a perspective view illustrating a toner cartridge of the image forming apparatus according to the embodiment of the invention. FIG. 3 is a cross-sectional view illustrating a toner cartridge of the image forming apparatus according to the embodiment of the invention. FIG. 2 is a block diagram illustrating a circuit configuration of a wireless communication unit of the image forming apparatus according to the embodiment of the present invention. 2 is a block diagram illustrating a circuit configuration of a memory chip of a toner cartridge used in the image forming apparatus according to the embodiment of the present invention. FIG. It is sectional drawing which shows the positional relationship of the radio | wireless communication part and memory chip which are performing radio | wireless communication. FIG. 3 is a side view showing a configuration of an image carrier unit used in the image forming apparatus according to the embodiment of the present invention. FIG. 2 is a block diagram illustrating a configuration of a control unit of the image forming apparatus according to the embodiment of the present invention and each unit connected to the control unit. It is a memory map which illustrates the data memorize | stored in program ROM, main body NVM, and unit NVM. 7 is a graph showing changes in developer charging ability with respect to developer usage (life count value) stored in a main body NVM. 6 is a graph showing a setting for correcting a change in charging ability of a developer, and a graph showing a setting of an image density with respect to a usage amount of the developer. FIG. 16 is a graph showing a result corrected by the setting shown in FIG. 15, where (A) shows a corrected toner density, and (B) shows a corrected image density. It is a block diagram which shows a part of software structure memorize | stored as an execution program in program ROM. It is a flowchart (S10) which shows the control flow when an exchange unit is mounted | worn. It is a figure which shows the screen display of a host apparatus or a user interface. It is a flowchart (S20) which shows a 1st modification. It is a block diagram which shows the hardware on the host side in a 2nd modification. It is a block diagram which shows the software on the host side in a 2nd modification. It is a figure which shows the information printing screen in a 2nd modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image forming system 2 Host apparatus 3 Network 10 Image forming apparatus 12 Image forming apparatus main body 18 User interface 48 Developer 52 Toner cartridge 54 Image carrier 56,300,304,308 Wireless communication part 74 Intermediate transfer body 90 Image density sensor 106 Control unit 108 Image carrier unit 110 Image forming unit 118 First auger 120 Second auger 122 Third auger 170, 302, 306, 310 Memory chip 184 Unit NVM
202 CPU
224 program ROM
228 body NVM
300 Genuine / non-genuine discriminating unit 302 Information printing control unit 304 Information printing time selection unit 306 Power-on selection unit 308 Predetermined number selection unit 310 Internal designation selection unit 312 External designation selection unit 316 Display screen

Claims (9)

The device body;
At least one replacement unit that is replaceably attached to the main body of the apparatus and stores the developer ;
A discriminating means for discriminating whether the replacement unit is genuine or non-genuine;
If it is determined that the replacement unit is a non-genuine product as a result of determination by this determination means, a message to that effect is added, and the usage amount of developer, which is an operation mode corresponding to the genuine replacement unit, is supported. was, the image formation control condition for the density control of the developer in the developing device on the basis of the image density of the image formed on the recording medium, the density control of the developer with respect to the amount of the developer setpoint the concentration of the developer in the variation of the decrease is not Ru controlled conditions or developer density control setting image density based on a defined Ru controlled conditions to increase or decrease the limit value for, or regardless of the amount of the developer control conditions to control the set value Ru is constant or density control setting initial value increased or decreased allowed Ru controlled conditions before the developer is used for the developer or controlled conditions a combination of two or more thereof, By and causes selected from the control condition of the image forming corresponding to the amount of the developer which is another operation mode of one user, and control means for controlling to print on the paper in the selected other operating modes ,
An image forming apparatus.   The image forming apparatus according to claim 1, wherein a plurality of replacement units are provided for each color, and the control unit displays for each color that a product other than a genuine product is used. A printing time selection means for selecting a printing time for paper indicating that the replacement unit is not a genuine product,
The image forming apparatus according to claim 1, further comprising: The printing time selection means is a power-on selection unit that selects to perform printing on paper indicating that the replacement unit is other than a genuine product when the power is turned on,
The image forming apparatus according to claim 3. The printing time selection means is a selection unit for each predetermined number of sheets that selects to perform printing on a sheet indicating that the replacement unit is other than a genuine product for every predetermined number of printings,
The image forming apparatus according to claim 3. The printing time selection means is a designated time selection unit that selects to perform printing on a sheet indicating that the replacement unit is other than a genuine product,
The image forming apparatus according to claim 3.   The image forming apparatus according to claim 6, wherein the designated print selection unit selects printing on a sheet indicating that the replacement unit is other than a genuine product according to a designation signal from the outside. Charging means for charging for printing of paper, and charging control means for not charging for printing of paper on which the replacement unit by the control means is printed other than genuine products;
The image forming apparatus according to claim 1, further comprising: An image forming apparatus;
A host device connected to the image forming apparatus;
Have
The image forming apparatus includes:
The device body;
At least one replacement unit that is replaceably attached to the main body of the apparatus and stores the developer ;
A discriminating means for discriminating whether the replacement unit is genuine or non-genuine;
If it is determined that the replacement unit is a non-genuine product as a result of determination by this determination means, a message to that effect is added, and the usage amount of developer, which is an operation mode corresponding to the genuine replacement unit, is supported. The change in the developer density control setting value relative to the amount of developer used , with respect to the image forming control conditions for controlling the developer density in the developing device based on the image density of the image formed on the recording medium control conditions Ru increase or decrease the amount or the density control of the developer setpoint image density based on a defined Ru controlled conditions to increase or decrease the limit value for the or the density control of the developer regardless the amount of the developer, control condition setting values Ru is constant, or density control setting initial value increased or decreased allowed Ru controlled conditions before the developer is used for a developer, or in control conditions composed of a combination of two or more of these Ri together is selected from the control condition for image formation corresponding to the amount of the developer which is another operation mode of one user, and control means for controlling to print on the paper in the selected other operating mode,
Have
The host device is
A printing time selection means for selecting a printing time for paper indicating that the replacement unit is not a genuine product,
An image forming system.

Images