Abstract: A developing cartridge includes: a casing, a developing roller, a coupling, a coupling gear, a detection gear, an agitator, a first gear cover, a second gear cover, and a lock rib. The casing accommodates developing agent. The developing roller is rotatable about a first axis. The coupling and the coupling gear are rotatable about a second axis. The detection gear is rotatable about a third axis. The agitator agitates developing agent in the casing and performs power transmission from the coupling gear to the detection gear. The first gear cover covers at least the coupling gear. The second gear cover covers at least a portion of the detection gear. The lock rib is positioned at the other end of the casing. The lock rib is configured to be locked to a portion of a drum cartridge in a state where the developing cartridge is attached to the drum cartridge.

Abstract: A system includes a notification unit configured to notify a server device of device information including identifying information for identifying an information processing device; a storage unit configured to store the identifying information and consumable article information that indicates a consumable article available in the information processing device identified by the identifying information so that each type of the identifying information is associated with the corresponding consumable article information; a specifying unit configured to specify, among a plurality of pieces of consumable article information stored in the storage unit, a piece of consumable article information associated with the identifying information included in the device information notified by the notification unit; a generator configured to generate an order image that encourages an order of a consumable article indicated by the piece of consumable article information specified by the first specifying unit; and a display unit

Abstract: A content display apparatus includes a plurality of communication antennas arranged on the same side as the display portion, a non-contact communication portion which performs non-contact communication with an information terminal apparatus by using each of the plurality of communication antennas, a content display control portion which displays a content on the display portion; and a communication antenna control portion which performs control to validate one communication antenna of the plurality of communication antennas based on a display position of the content displayed by the content display control portion, in which the information terminal apparatus performs non-contact communication with the validated communication antenna and obtains additional information of the displayed content.

Abstract: An object is to improve a user's convenience. There is provided a control unit for use in a liquid ejecting apparatus using a tank containing a liquid and a storage material attachable to and detachable from the liquid ejecting apparatus, and storing an amount of the liquid in the tank. After the storage material is not mounted on a predetermined place, the control unit receives an answer for a question to ask whether or not the liquid is injected to the tank.

Abstract: An image forming apparatus includes a developing unit configured to develop an electrostatic latent image, a mounting detection unit configured to detect that a container T is mounted on a mounting unit, a driving unit configured to rotate the container T, a rotation detection unit configured to detect rotation information about the container T, and a controller configured to control the driving unit based on the rotation information. If the container T is detected to be mounted on the mounting unit, control of the driving unit is not carried out based on the rotation information until replenishment information satisfies a predetermined condition.

Abstract: An image forming apparatus includes a developer container, a development device, a developer replenishment device and a control part. The control part obtains a replenishment amount (X) of the developer replenished by the developer replenishment device from a last-time replenishment until a this-time replenishment and a predicted consumption (Y) of the developer, calculated based on the image data output from the last-time replenishment until the this-time replenishment, and informs abnormality when an absolute value of a difference of the replenishment amount (X) and the predicted consumption (Y) is larger than a threshold value.

Abstract: A fixing apparatus fixes an image onto a recording material. A first fuse and a second fuse are connected in series each other. A power supply line is connected to one end of the first fuse. A signal line is connected to a connection point between another end of the first fuse and one end of the second fuse. A ground line is connected to another end of the second fuse. Information regarding the fixing apparatus is held in accordance with melt states of the first and second fuses.

Abstract: An image forming apparatus includes an image forming unit, a mounting portion, and a detecting device. The image forming unit forms an image using toner. A toner container of a given type is removably mounted on the mounting portion. The detecting device detects whether or not the toner container has been mounted on the mounting portion. The toner container and the mounting portion respectively include an engaging protrusion and an engaging hole. The engaging protrusion and the engaging hole are engageable with one another. The engaging protrusion and the engaging hole engaged with one another causes the detecting device to detect that the toner container has been mounted on the mounting portion. The engaging protrusion and the engaging hole are of form configured according to the toner container type.

Abstract: An image forming apparatus with a detachable fixing device that is capable of printing with high quality without printing wastefully. A storage unit stores identification information about a fixing device in association with an attribute of a sheet that is printable with the fixing device concerned. A control unit executes printing when the storage unit does not store an attribute of a sheet corresponding to a fixing device that is currently attached to the image forming apparatus. The control unit determines whether to execute printing according to an attribute of a sheet used in printing and an attribute of a sheet stored in the storage unit when the storage unit stores the attribute of the sheet corresponding to the fixing device that is currently attached to the image forming apparatus.

Abstract: In one example, an article for an imaging supply for a printer includes a first memory and a second memory. The first memory stores an indication that a digital signature to authenticate the imaging supply to the printer is stored in the second memory. The second memory stores a digital signature to authenticate the imaging supply to the printer and consumables management data.

Abstract: A toner container is attachable to and detachable from a toner supply portion of an image forming apparatus. The toner container includes an attaching portion configured to be engaged with an attached portion of the toner supply portion such that the toner container is selectively attached to the toner supply portion. The attached portion includes an engaged portion around which first interruption keys are disposed. The attaching portion includes an engaging portion and a plurality of key members. The engaging portion is configured to be engaged with the engaged portion. The key members are larger in number than the first interruption keys and include second interruption keys formed in correspondence with the first interruption keys. Among the key members, the second interruption keys that interrupt with the first interruption keys are cut so that the engaging portion and the engaged portion can be engaged with each other.

Abstract: A developing cartridge may include a housing including an outer surface, a small-diameter gear, a large-diameter gear, a first gear, and a moving member. The small-diameter gear may include a first engaging portion positioned on at least a portion of a peripheral surface of the small-diameter gear. The large-diameter gear may be positioned farther from the outer surface than the small-diameter gear from the outer surface. The large-diameter gear may be rotatable together with the small-diameter gear. The first gear may include a second engaging portion, a first end surface, a second end surface, and at least one protrusion. The moving member may include a contact portion configured to move the moving member from one position to another position in a state where the contact portion is in contact with the protrusion.

Abstract: A developing cartridge is provided. The developing cartridge includes a housing which accommodates developer therein, a receiving member provided which couples with a force output member of an image forming apparatus to receive a driving force, a developing roller which rotates by the driving force received by the receiving member; a detectable rotary member having a first detectable portion and a second detectable portion and rotates by the driving force from a first rotational position where the first detectable portion is detected by a detection member provided in the image forming apparatus to a second rotational position where the second detectable portion is detected by the detection member, and a cut-off mechanism which cuts off a transmission of the driving force from the receiving member to the detectable rotary member in a state where the detectable rotary member is positioned in the second rational position.

Abstract: Method and system for converting a toner cartridge printer to a white, clear, metallic or light toner printer. The method may comprise the steps: providing a printer having one or more toner cartridges; removing at least one of the one or more toner cartridges; disassembling the one or more removed toner cartridges; cleaning the one or more removed toner cartridges; filling the one or more removed toner cartridges with a white, clear, metallic or light toner; and installing the one or more removed white, clear, metallic or light toner cartridges into the printer.

Abstract: A powder container includes a powder chamber for containing powder for forming images, a powder outlet formed in a face of the powder container, and a shutter assembly to open and close the powder outlet and including first and second shutters. The first shutter is movable between a sealing position to close the powder outlet and an open position to open the powder outlet and includes a pressed member to cancel retention of the first shutter at the sealing position. The second shutter includes a pressing projection that interferes with the pressed member of the first shutter and is movable between a shielding position to cover the pressed member without interference between the pressing projection and the pressed member and a releasing position to press the pressed member with the pressing projection.

Abstract: An image heating unit detachably mountable to an image forming apparatus includes a pair of rotatable members configured to form a nip for heating a toner image formed on a recording material; an outermost wall positioned outside the rotatable members; and an electrical substrate including a storing element. The electrical substrate is mounted on an outer surface of the outermost wall so that the storing element faces the outer surface of the outermost wall with a predetermined gap therebetween.

Abstract: An image forming apparatus with a detachable fixing device that is capable of printing with high quality without printing wastefully. A storage unit stores identification information about a fixing device in association with an attribute of a sheet that is printable with the fixing device concerned. A control unit executes printing when the storage unit does not store an attribute of a sheet corresponding to a fixing device that is currently attached to the image forming apparatus. The control unit determines whether to execute printing according to an attribute of a sheet used in printing and an attribute of a sheet stored in the storage unit when the storage unit stores the attribute of the sheet corresponding to the fixing device that is currently attached to the image forming apparatus.

Abstract: An image forming apparatus includes: a toner container, a reader and writer, a blocking control section, and a press mechanism. To the toner container, an RFID tag is attached. The reader and writer opposes the RFID tag. The press mechanism has a press member and a rotor reciprocally moving in an attachment and detachment direction of the toner container. The blocking control section permits power supply to the reader and writer when the press member has been pressed in conjunction with insertion of the toner container and the rotor in conjunction therewith has moved to a first tip position, and blocks the power supply to the reader and writer when the rotor has separated from the first tip position and has moved to a locking position.

Abstract: A waste toner detection mechanism includes a transmission member and a flag member. The transmission member transmits the rotation of a rotation transmission member to a stirring shaft. The transmission member can move between the farthest position and the closest position to the rotation transmission member in the axial direction of the stirring shaft and moves from the farthest position to the closest position with an increase in difference in rotation between the rotation transmission member and the stirring shaft. The transmission member has a locking portion elastically engaged with the rotation transmission member in the closest position and restricts movement of the transmission member to the farthest position. The flag member moves from a retracting position of being stored in the waste toner container to an exposing position of being exposed from the waste toner container with the transmission member moving from the farthest position to the closest position.

Abstract: An image forming apparatus includes an image forming device that forms an image on a sheet, a fixing device including a fixing member that fixes the image formed on the sheet and a polishing device that polishes a surface of the fixing member, and circuitry that determines whether an interruption required operation is to be performed, at a time while image formation is being performed by the image forming device to execute an image forming job, or at a time after image formation is executed for one job and before image formation is to be executed for a subsequent job, controls the image forming device to stop image formation to perform the interruption required operation, based on a determination indicating that the interruption required operation is to be performed, and controls the polishing device to polish the surface of the fixing member concurrently with the interruption required operation.

Abstract: An image forming apparatus has a photosensitive drum configured to bear a developer image, a developing apparatus having a developing roller that bears developer and a developing blade that regulates the amount of the developer on the developing roller, and a detection portion that detects information on the amount of the developer stored in the developing apparatus. The image forming apparatus performs a discharging operation for discharging a coating agent, applied to a developing roller in an unused state, from the developing apparatus to the photosensitive drum, while varying an operational condition for the discharging operation varied based on the information.

Abstract: Disclosed is a method and an apparatus for controlling light emission of an ink cartridge. The method includes: an ink cartridge control unit (304), configured to receive a light emitting control instruction from an imaging device main body and identifying the instruction; the ink cartridge control unit (304), configured to control light emission of a light emitting unit (303) of the ink cartridge (10) according to the identified light emitting control instruction and preset control information corresponding to the light emitting control instruction so that the light emitting unit (303) does not emit light at an adjacent position light detection stage but emits light at an facing position light detection stage.

Abstract: A cartridge including a carrier storing an authenticity verification code readable by a scan device other than a host device and an auto-destruct feature to render the authenticity verification code unreadable at installation.

Abstract: A replaceable item for a host device, such as a print substance cartridge for a printing device, stores multiple identities. For each identity, the replaceable item stores multiple authentication values, or passwords. The replaceable item selects an identity, and in response to a request for an authentication value from the host device, sends the requested authentication value for the selected identity.

Abstract: An image forming apparatus includes a toner container information storage section, a toner container information acquisition section, a toner container information readout section, a number-of-refills comparing section, a genuine product determining section, and a toner container information update section. The toner container information acquisition section is configured to acquire an identification code and a number of refills from a toner container. The number-of-refills comparing section is configured to read out, based on the acquired identification code, the number of refills of the corresponding toner container from the toner container information storage section and determine whether or not the number of refills acquired from the toner container is smaller than the read number of refills. If the number of refills acquired from the toner container is smaller than the read number of refills, the genuine product determining section determines that the toner container is a non-genuine product.

Abstract: A roller for transferring a print image or a toner layer onto another element in a printer or copier is provided. The roller can include a base body, a first elastic layer applied onto the base body and a second elastic layer applied onto the first elastic layer, wherein the ratio of the moduli of elasticity of the elastic layers and/or the ratio of the thicknesses of the elastic layers are matched to one another so that the average surface velocity difference between the roller and the other element is reduced and/or minimized.

Abstract: A process of forming an image includes the steps of: developing an electrostatic latent image with a toner, the latent image being formed through charge of the surface of an electrostatic latent image carrier and exposure of the surface to light; and applying a lubricant onto the surface of the electrostatic latent image carrier. The toner includes a toner matrix particle and an external additive nanoparticle. The external additive nanoparticle comprises a silica-polymer composite nanoparticle. A percentage of atomic silicon present on the surface of the silica-polymer composite nanoparticle satisfies Condition A expressed by Expression: 15.0 atm %?percentage of atomic silicon ({Si/(C+O+Si)}×100)?30.0 atm %. The percentage of atomic silicon is determined from total amounts of atomic carbon, oxygen, and silicon present on the topmost surface of the silica-polymer composite nanoparticle and within 3 nm inwards from the topmost surface.

Abstract: In one example, an article for an imaging supply for a printer that includes a first memory and a second memory in which the first memory stores an indication that unsigned data or signed data is stored on the second memory and the second memory stores consumables management data to cause the printer to define at least one of a yield, a low point, and an out point of the imaging supply.

Abstract: A cartridge attachable to and detachable from a body of an image forming apparatus includes a toner container containing a toner and including a stirring member configured to stir the toner, and a developing section connected to the toner container through a supply port and including a developing section stirring member configured to stir the toner, a supply roller configured to receive the toner supplied from the developing section stirring member, and a developing roller configured to receive the toner supplied from the supply roller. A rotation ratio of the stirring member to the supply roller is 5% to 25%.

Abstract: In one example, an imaging supply includes a container to contain an imaging material, a first memory on the container, and a second memory on the container different from the first memory. The first memory stores an indication that signed data is stored in the second memory and the second memory stores a digital signature to authenticate the imaging supply to a printer or an indication that unsigned data is stored in the second memory and the second memory stores consumables management data or an indication that no data is stored in the second memory.

Abstract: A method, a system and a memory chip for generating a verification value, which can eliminate the defect of time consuming and high power consumption of the existing memory chip for generating verification value, are provided according to the present disclosure. The method comprises the following steps: a frequently changing data relating to an imaging cartridge is acquired; an intermediate verification data pre-generated based on infrequently changing data is acquired; the frequently changing data and the intermediate verification data are calculated through a predetermined algorithm, and thus a verification value is obtained.

Abstract: A cartridge for an image forming apparatus including a movable member is provided with a first engaging portion and a second engaging portion movable between a first position and a second position. The cartridge includes a first engaged portion engageable with the first engaging portion, and a second engaged portion engageable with the second engaging portion. By the first engaged portion being engaged with the first engaging portion in the process of mounting, the movable member is moved from the first position to the second position to permit the second engaged to pass the second engaging portion in a mounting direction.

Abstract: A cartridge used for forming an image on a recording material includes a memory for storing information, wherein the memory has an outer configuration having a length in a first direction and a length in a second direction longer than the length in the first direction in a plane crossing a thickness direction thereof; a supporting portion provided on a first cartridge constituent member and provided with a slit for permitting insertion of the memory; and a preventing portion, provided on a second cartridge constituent member, for preventing movement of the memory inserted in the supporting portion. A prevention width of the slit with respect to a direction crossing the thickness direction of the memory is longer than the length of the memory in the first direction and is shorter than the length of the memory in the second direction as seen in an inserting direction of the memory.

Abstract: A cartridge includes a housing, a drive-transmission member and a detected body. The housing has a first wall and a second wall opposing each other in a first direction from the second wall toward the first wall. The drive-transmission member is rotatable about a first axis parallel to the first direction for transmitting a drive force. The detected body is rotatable about a second axis parallel to the first axis upon receipt of the drive force to move the detected body irreversibly from a first position to a second position. The detected body includes: a detected portion; a receiving portion configured to receive the drive force; and a peripheral portion positioned downstream of the receiving portion in a radial direction of the detected body away from the second axis, at least a portion of the detected portion being positioned on the peripheral portion.

Abstract: A developing cartridge is provided. The developing cartridge includes a housing which accommodates developer therein, a receiving member which receives a driving force output member provided in an image forming apparatus, a developing roller which rotates by the driving force received by the receiving member, and a detectable rotary member including a detectable portion, which is a detection target to be detected by a detection member provided in the image forming apparatus, and a contact portion which is provided away from the detectable portion. The detectable rotary member rotates from a retreat position to an initial position where the detectable rotary member is rotated by the driving force received by the receiving member, by the contact portion contacting an interference member fixed in the image forming apparatus in a process of mounting the developing cartridge into the image forming apparatus.

Abstract: An image forming apparatus with a detachable fixing device that is capable of printing with high quality without printing wastefully. A storage unit stores identification information about a fixing device in association with an attribute of a sheet that is printable with the fixing device concerned. A control unit executes printing when the storage unit does not store an attribute of a sheet corresponding to a fixing device that is currently attached to the image forming apparatus. The control unit determines whether to execute printing according to an attribute of a sheet used in printing and an attribute of a sheet stored in the storage unit when the storage unit stores the attribute of the sheet corresponding to the fixing device that is currently attached to the image forming apparatus.

Abstract: An image forming apparatus includes a developing cartridge. The developing cartridge includes a casing, a developer roller, and a coupling member. The coupling member is movable between (i) a first position in which an axis L2 of the coupling member is substantially parallel to and offset from an axis L1 of the developer roller so that the axis L2 does not pass through developer roller, (ii) a second position in which the axis L2 is inclined with respect to the position of the axis L2 when the coupling member is in the first position, (iii) and a third position in which the axis L2 is inclined with respect to the position of the axis L2 when the coupling member is in the first position and in a direction opposite to the direction the coupling member is inclined when in the second position.

Abstract: A cartridge includes: a casing including a developer accommodation part for accommodating developer; an agitator for agitating the developer and rotatable about a first rotational axis extending in an axial direction; a receiving member rotatable about a second rotational axis upon receipt of a drive force inputted thereto; a first drive-force transmission member rotatable about a third rotational axis upon receipt of the drive force from the receiving member; and a second drive-force transmission member rotatable about the first rotational axis together with the agitator. The second drive-force transmission member can contact the first drive-force transmission member and receive the drive force therefrom, the first rotational axis being positioned closer to the second rotational axis than the third rotational axis is to the second rotational axis when projected in the axial direction of the agitator.

Abstract: This invention concerns a cleaning unit which has a photosensitive body and a cleaning frame body supporting the photosensitive body, and which is attachable to and detachable from an apparatus main body of an image forming apparatus configured to form an image on a recording material. In the cleaning unit, which is installed in the apparatus main body so as to adjoin a developing unit including a developing roller that bears toner for developing an electrostatic image formed on the photosensitive body 1, engagement portions (bosses) are disposed on the cleaning frame body so as to protrude toward the developing unit side, and engage with engaged portions (insertion guide portions) disposed on the apparatus main body when the cleaning unit is attached to the apparatus main body.

Abstract: Many devices, such as printers, work with one or more removable unit. Often, the removable units have an electronic circuit that used to communicate with the device. It may be desirable to provide a replacement unit in these devices. The replacement unit must include an electronic circuit that is able to communicate with the original device. Disclosed is a method and apparatus where a replacement unit is provided with a new electronic circuit and a used electronic circuit. The new electronic circuit is electrically connected to the used electronic circuit and uses the used electronic circuit to facilitate communication with the host device.

Abstract: A developing cartridge may include multiple rotary members, at least one of the rotary members configured to be detected by an image forming apparatus. In one example, the rotary members may include engagement portions configured to engage with one another to rotate the rotary members. Additionally or alternatively, in a case where one rotary member is in a driven position, the other rotary member may be rotatable a predefined amount from a non-driving state in which the other rotary member is rotatably disengaged from the one rotary member, to a driving state in which the other rotary member rotatably engages the one rotary member with the engagement portions in contact with one another.

Abstract: Provided are a storage chip, an imaging cartridge, a method for changing a serial number and a method of using the storage chip. The storage chip includes a communication unit, a control unit and a storage unit; the storage unit stores information of multiple different serial numbers and mark information or access mark information about whether a currently-selected serial number is legal; the control unit determines whether the serial number information sent to the imaging device is determined as legal according to a preset strategy and autonomously changes the selected serial number information when a preset condition is satisfied according to the determination result, so that the method of changing the serial number of the storage chip is more convenient, user experience is greatly improved and the problem that the storage chips are unusable because of the same serial number can be solved.

Abstract: Example secure upgrade supplies and methods are disclosed. A disclosed example upgrade supply cartridge structured includes a chamber to store a material useable by the imaging forming apparatus to form an image on media; a security device to provide an authentication credential to an image forming apparatus, the authentication credential useable to authenticate an identity of the upgrade supply cartridge; and a tamperproof data storage including upgrade data useable by the image forming apparatus to activate a capability included but disabled in the image forming apparatus, the tamperproof data storage structured to store an identifier of the image forming apparatus after the upgrade supply cartridge has been utilized by the image forming apparatus to activate the disabled capability.

Abstract: A cartridge including: a housing configured to accommodate therein developer; a driving receiving part configured to receive a driving force; a rotary member configured to rotate by receiving a driving force from the driving receiving part, and a detected part configured to be moved by the rotation of the rotary member, wherein the rotary member is configured to rotate from a first state where the driving force from the driving receiving part is transmitted to the rotary member to a second state where the transmission of the driving force from the driving receiving part to the rotary member is released, and then rotate from the second state to the first state.

Abstract: An image formation apparatus includes: image formation units each configured to form a developer image; an intermediate transfer body onto which the developer images formed by the respective image formation units are transferred; a secondary transfer member configured to transfer the developer images, which are transferred to the intermediate transfer body, onto a record medium using a voltage supplied to the secondary transfer member; and a voltage supply unit configured to supply a voltage to the secondary transfer member. Arrangement of the image formation units is changeable. Depending on the arrangement of the image formation units in a conveyance direction of the intermediate transfer body, the voltage supply unit changes a voltage to be supplied to the secondary transfer member.

Abstract: A cartridge detachably attachable to an image forming apparatus which includes a main body, a driving unit and a detecting unit, includes: a housing that is configured to accommodate a developer therein, and includes a first side wall and a second side wall opposed to the first side wall in a longitudinal direction; a passive unit that is configured to receive a driving force from the driving unit, is mounted on the first side wall, and is rotatable around a first axis line parallel to the longitudinal direction; and a detected body mounted on the first side wall and including a detected part which is detected by the detecting unit. The detected body advances outwards in the longitudinal direction with respect to the first side wall and retracts inwards in the longitudinal direction with respect to the first side wall by the driving force received by the passive unit.

Abstract: A cartridge including a housing configured to accommodate therein developer, a driving receiving part configured to receive a driving force, a transmission member configured to rotate by receiving a driving force from the driving receiving part, a first rotary member configured to rotate by abutting on the transmission member and receiving a driving force from the transmission member, a second rotary member configured to abut on the transmission member by receiving a driving force from the first rotary member, and rotate by abutting on the transmission member and receiving a driving force from the transmission member, and a detected part configured to move in accordance with the rotation of the second rotary member.

Abstract: A cartridge including a housing configured to accommodate therein developer, a driving receiving part configured to rotate by receiving a driving force, a rotary member configured to rotate from a first position by receiving a driving force from the driving receiving part, and a detected member including a detected part and configured to move in an axis direction parallel with a rotational axis of the rotary member while being restrained from rotating, by receiving a driving force from the rotary member, wherein the detected member includes a first restraint part configured to restrain the rotation of the rotary member at the first position.

Abstract: An image forming apparatus includes an apparatus main body and a cartridge configured to be mounted to and detached from the apparatus main body. The cartridge includes a rotating member which is configured to rotate and comprises a detected portion and a first engaging portion. The apparatus main body includes a detecting portion configured to detect the detected portion and a second engaging portion configured to engage with the first engaging portion. At least when the detecting portion detects the detected portion, the first engaging portion and the second engaging portion are engaged with each other by rotation of the rotating member.

Abstract: The invention provides a developer cartridge with a counting mechanism. The developer cartridge comprises a developer and the counting mechanism, wherein the counting mechanism is provided with protrusions which come in contact with a contact lever on an electronic photographing device so as to count the developer cartridge; and each protrusion has a first position and a second position in the direction perpendicular to a side wall of the developer cartridge, and is, in the first position, in contact with the contact lever, but is not, in the second position, in contact with the contact lever. The working principle of the developer cartridge adopting the counting mechanism is greatly different from the prior art. Therefore, the structure of the counting mechanism of the developer cartridge is simpler and more convenient and reliable; the production precision and the production cost are reduced; and the market competitiveness of the developer cartridge is improved.