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WO2008001463A1 - Cartouche de traitement et appareil de formation d'image - Google Patents

Cartouche de traitement et appareil de formation d'image Download PDF

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Publication number
WO2008001463A1
WO2008001463A1 PCT/JP2006/313112 JP2006313112W WO2008001463A1 WO 2008001463 A1 WO2008001463 A1 WO 2008001463A1 JP 2006313112 W JP2006313112 W JP 2006313112W WO 2008001463 A1 WO2008001463 A1 WO 2008001463A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrophotographic photosensitive
photosensitive member
seal
photosensitive drum
toner
Prior art date
Application number
PCT/JP2006/313112
Other languages
English (en)
Japanese (ja)
Inventor
Kentarou Kawata
Original Assignee
Canon Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Kabushiki Kaisha filed Critical Canon Kabushiki Kaisha
Priority to PCT/JP2006/313112 priority Critical patent/WO2008001463A1/fr
Priority to JP2008522266A priority patent/JP4764481B2/ja
Priority to EP06780679.4A priority patent/EP2040130B1/fr
Priority to CN2006800394079A priority patent/CN101292201B/zh
Publication of WO2008001463A1 publication Critical patent/WO2008001463A1/fr

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • G03G21/1803—Arrangements or disposition of the complete process cartridge or parts thereof
    • G03G21/1828—Prevention of damage or soiling, e.g. mechanical abrasion
    • G03G21/1832—Shielding members, shutter, e.g. light, heat shielding, prevention of toner scattering

Definitions

  • the present invention relates to a process cartridge and an image forming apparatus having a cleaning member for removing a developer remaining on an electrophotographic photosensitive member after a developer image is transferred from the electrophotographic photosensitive member to a recording medium.
  • An electrophotographic image forming apparatus forms a latent image on an electrophotographic photosensitive member, develops the latent image with a developer (hereinafter referred to as “toner”) to form a visible image, and transfers the toner image to a transfer unit.
  • the image is formed by transferring to a recording medium.
  • the electrophotographic photosensitive member after completion of transfer is prepared for reuse by removing a deposit such as transfer residual toner by a cleaning device.
  • FIG. 9 shows the photosensitive drum 100 and the cleaning device 600 after the transfer process by the transfer means.
  • the photosensitive drum 100 is moved in the direction of arrow A, and the transfer residual toner 001 remaining on the photosensitive drum 100 without being transferred in the transfer step then reaches the cleaning device 600.
  • the cleaning device 600 includes a cleaning blade 601 having rubber elasticity, a storage portion 603 for storing deposits such as transfer residual toner removed by the cleaning blade 601 and a seal sheet 602 as a seal member.
  • the seal sheet 602 comes into contact with the surface of the photosensitive drum 100 upstream of the cleaning blade 601 in the moving direction of the photosensitive drum, and contacts the toner so that the toner on the photosensitive drum 100 passes in the moving direction of the photosensitive drum 100.
  • the untransferred toner 003 that has passed through the nipped portion N between the seal sheet 602 and the photosensitive drum 100 is removed from the surface of the photosensitive drum 100 by the cleaning blade 601.
  • the removed toner 005 is collected by the seal sheet 602 and stored in the toner storage unit 603.
  • the seal sheet 602 is disposed to be inclined with respect to the photosensitive drum 100 so that the free edge thereof is in contact with the outer peripheral surface of the photosensitive drum 100.
  • the seal sheet 602 has a narrow gap between the photosensitive drum 100 and the seal sheet 602 with respect to the rotation direction of the photosensitive drum 100.
  • the seal sheet 602 a material having elasticity so that no gap is generated at the ep portion N with respect to the photosensitive drum 100 is used, and a material that adheres well to the photosensitive drum 100 is preferable. This is because the toner force that has been scraped off by the cleaning blade 601 can be prevented from leaking to the outside of the two-force N-force accommodating portion between the photosensitive drum 100 and the seal sheet 602 when the adhesiveness is better.
  • a seal sheet made of thermoplastic urethane is known (Patent Document 1).
  • the contact pressure between the seal sheet and the photosensitive drum is a value that does not damage the photosensitive layer of the photosensitive drum, and the toner on the photosensitive drum passes through the nipping portion N by the movement of the photosensitive drum.
  • An appropriate value is preferable.
  • Patent Document 1 Japanese Utility Model Publication No. 21323
  • FIG. 9 is an image forming apparatus that employs a cleaning device as shown in FIG. 9, and is a downstream side of the photosensitive drum 100 in the moving direction from the position where the transfer process is performed, and the moving direction of the photosensitive drum 100 from the seal sheet 602. It is possible to adopt a configuration that neutralizes the photosensitive drum 100 at the upstream position. This is because the electrostatic adhesion between the transfer residual toner and the photosensitive drum 100 can be weakened by removing static electricity from the photosensitive drum 100 before the transfer residual toner enters the cleaning device. This is because the transfer residual toner can be removed satisfactorily.
  • the amount of residual toner remaining on the photosensitive drum 100 without being transferred increases. That is, the toner 001 coming to the nipped portion N between the seal sheet 602 and the photosensitive drum 100 increases. Therefore, the untransferred toner 001 does not pass through the nip portion N due to physical contact with the rake sheet 602. In other words, toner 002 that can be dammed in front of the nipped part is produced.
  • the transfer residual toner 002 blocked by the seal sheet 602 is accumulated on the upstream side of the contact nip between the photosensitive drum 100 and the seal sheet 602 by a mirror image force or van der Waalska. Then, as shown in FIG. 10, when the opening direction of the seal sheet 602 and the photosensitive drum 100 is on the side where the gravity direction falls, the toner 004 that falls according to the gravity appears as the accumulation amount increases. The toner may contaminate the image forming apparatus.
  • an object of the present invention is to provide a process cartridge and an image forming apparatus capable of suppressing toner from being deposited on a seal member in a high-temperature and high-humidity environment, and dropping of the deposited toner.
  • An accommodating portion for accommodating the developer removed by the cleaning member
  • a light passage part Provided on a frame through which static elimination light for neutralizing the surface of the electrophotographic photosensitive member is passed at a position downstream of the transfer position and upstream of the contact position of the seal member with respect to the electrophotographic photosensitive member moving direction.
  • a process cartridge removable from a main body of an image forming apparatus wherein a difference between a work function of the electrophotographic photosensitive member and a work function of the seal member is 0.25 [eV] or more.
  • An accommodating portion for accommodating the developer removed by the cleaning member; Contacted with the surface of the electrophotographic photosensitive member upstream of the cleaning member in the moving direction of the electrophotographic photosensitive member, and the toner on the electrophotographic photosensitive member was passed through in the moving direction of the electrophotographic photosensitive member to be removed.
  • a neutralization device for neutralizing the surface of the electrophotographic photosensitive member at a position downstream of the transfer position and upstream of the contact position of the seal member with respect to the electrophotographic photosensitive member moving direction;
  • a process cartridge removable from a main body of an image forming apparatus wherein a difference between a work function of the electrophotographic photosensitive member and a work function of the seal member is 0.25 [eV] or more.
  • An accommodating portion for accommodating the developer removed by the cleaning member
  • a neutralization device for neutralizing the surface of the electrophotographic photosensitive member at a position downstream of the transfer position and upstream of the contact position of the seal member with respect to the electrophotographic photosensitive member moving direction;
  • An image forming apparatus wherein a difference between a work function of the electrophotographic photosensitive member and a work function of the seal member is 0.25 [eV] or more.
  • the present invention it is possible to suppress toner from being deposited on the seal member in a high-temperature and high-humidity environment, and to prevent the deposited toner from falling off.
  • FIG. 1 is a schematic diagram of a process cartridge.
  • FIG. 2 is a schematic diagram of an image forming apparatus having a process cartridge. 3] It is an explanatory diagram of the calculated contact pressure between the electrophotographic photosensitive member and the seal sheet.
  • Fig. 4 (a) is a schematic diagram of a sampler for measuring the work function of a cylindrical image forming apparatus member, and (b) is a schematic diagram of a surface analyzer.
  • FIG. 8 is an explanatory diagram of the contact position of the seal sheet with respect to the electrophotographic photosensitive member.
  • FIG. 10 is a schematic diagram of a transfer residual toner collection failure.
  • FIG. 1 is a schematic explanatory view of a process cartridge according to an embodiment of the present invention
  • FIG. 2 is an explanatory view of an electrophotographic image forming apparatus using the process cartridge.
  • an electrophotographic image forming apparatus (hereinafter referred to as “image forming”) is mounted by attaching a process cartridge 1100 to a mounting portion 1101 (see FIG. 2) provided in the main body of the image forming apparatus. Device)).
  • the process cartridge 1100 includes a photosensitive drum 100, a charging roller 201, a developing device 400, and a tallying device 600.
  • the process cartridge 1100 is provided on the frame 1102 so that these can be handled as a unit.
  • the process cartridge 1100 further includes an opening 1001 that is a light passage portion for irradiating the photosensitive drum 100 with static elimination light emitted from the LED light source 1000 (see FIG. 2).
  • the image forming apparatus has the following configuration.
  • a photosensitive drum 100 which is an electrophotographic photosensitive member on which an electrostatic latent image is formed, is disposed at the center.
  • Various process means are arranged around the photosensitive drum 100. That is, the charging device 200 is a charging unit that uniformly discharges and charges the photosensitive drum 100 to the negative polarity.
  • An exposure apparatus 300 that forms an electrostatic latent image corresponding to printing information and image information on a charged photosensitive drum 100 by laser exposure.
  • a developing device 400 which is a developing unit that visualizes the formed electrostatic latent image by reversal development of negatively charged toner.
  • a transfer device 500 that is a transfer means for transferring a visualized toner image to a recording medium 900 that is a transfer material.
  • Cleaning device 600 that removes residual toner on the photosensitive drum 100.
  • LED light source 1000 a static eliminator that neutralizes the photosensitive drum 100 after transfer.
  • Fixing device 800 that permanently fixes the toner image on the transferred recording medium 900.
  • a cassette 700 as a feeding device for supplying the recording medium 900 is provided.
  • the image forming apparatus main body is provided with an LED light source 1000 as a static eliminator, and the process cartridge 1100 is an opening that is a light passage for allowing the static radiated light emitted from the LED light source 1000 to pass therethrough. It has 1001.
  • the opening 1001 is provided in the frame 1102 of the process cartridge 1100 including a cleaning member and a storage portion.
  • the opening 1001 can be a transfer opening provided at the transfer position of the process cartridge 1100, or a light guide can be used.
  • the present embodiment is configured to receive light from the outside.
  • the process cartridge 1100 may be configured to include an LED light source.
  • the image forming apparatus main body or the process cartridge 1100 may be neutralized by using a brush charge eliminating apparatus or the like.
  • the charging device 200 includes a charging roller 201, a support member (not shown), a spring member (not shown), and a charging bias power source 202 as main parts.
  • the charging roller 201 of the present embodiment includes a conductive elastic layer made of urethane rubber or the like having a thickness of about 3 [mm] on a core metal, and a carbon black dispersed in urethane rubber having a thickness of several meters on the conductive elastic layer. It consists of a resistance layer.
  • the support member is conductive and supports the charging roller 201 rotatably at both ends.
  • the spring member presses the charging roller 201 against the photosensitive drum 100 through these support members.
  • a charging bias power source 202 provided in the image forming apparatus main body applies a voltage to the charging roller 201 via a spring member and a support member.
  • the charging roller 201 is installed so as to come into contact with the photosensitive drum 100 and to rotate following the rotation of the photosensitive drum 100.
  • a DC voltage of about 1000 V is applied to the charging roller 201 by the charging bias power source 202 to charge the surface potential on the photosensitive drum 100 to a negative potential (VD) -500V.
  • the surface of the photosensitive drum 100 is charged to a negative potential by the charging device 200, and then subjected to exposure corresponding to print information, image information, and the like by the exposure device 300, and an electrostatic latent image is formed.
  • the potential of the exposed part is the bright potential (VL) _IOOV.
  • the developing device 400 is divided into a hopper portion 406 for storing toner and a developing chamber 407 by a partition portion 405. Then, a stirring device 404 is disposed in the hopper unit 406, and the toner is fed into the developing chamber 407.
  • a developing roller 401, a supply roller 402, and a developer A regulating blade 403 is placed in the developing chamber 407.
  • the developing roller 401 has a two-layer structure in which a silicone rubber having a diameter of 16 [mm] is used as a base layer and an acrylic urethane rubber is coated on the surface, and the electrostatic latent image on the photosensitive drum 100 is provided.
  • the supply roller 402 includes a urethane sponge having a diameter of 16 [mm] for supplying toner to the developing roller 401.
  • a metallic developer regulating blade 403 regulates the toner layer thickness on the developing roller 401.
  • the stirring device 404, the developing roller 401, and the supply roller 402 are configured to be driven from the outside, and are always rotated during the developing process so that the toner can be supplied to the photosensitive drum 100. ing.
  • the developing roller 401 is installed so as to perform development in contact with the photosensitive drum 100.
  • a developing bias power source 408 applies a DC voltage of about 300 V to the developing roller 401, performs reverse development on the electrostatic latent image formed on the photosensitive drum 100, and generates an electrostatic latent image. Make the toner image visible.
  • the transfer device 500 of the present embodiment includes a transfer roller 501 having an EPDM sponge force having a diameter of 12 [mm], and a transfer bias power source 502 that applies a voltage to the transfer roller 501.
  • the voltage applied to the transfer roller 501 is controlled at a constant voltage during image formation.
  • the toner image on the photosensitive drum 100 is transferred to the recording medium 900 at the transfer position where the transfer roller 501 and the photosensitive drum 100 face each other.
  • the recording medium 900 stored in the cassette 700 as a feeding device is supplied to the registration roller 702 by the feeding roller 701 in synchronization with the formation of a visible image on the photosensitive drum 100.
  • the recording medium 900 is conveyed between the transfer roller 501 and the photosensitive drum 100 in synchronization with the leading edge of the visible image formed on the photosensitive drum 100 by the registration roller 702.
  • a DC voltage of about +2000 V is applied to the transfer roller 501, and the toner image is transferred to the recording medium 900.
  • the toner image transferred to the recording medium 900 is conveyed to the fixing device 800 together with the recording medium 900, and is fixed by applying heat and pressure to form a recorded image.
  • the surface potential of the photosensitive drum 100 is set to approximately OV through a static elimination process using static elimination light from the LED light source 1000.
  • Transfer residual toner on the photosensitive drum 100 After passing through a sealing sheet 602 as a sealing member that makes a light contact with the photosensitive drum 100, the photosensitive drum 100 is removed from the photosensitive drum 100 by a cleaning blade 601 that is a cleaning member made of polyurethane rubber. The removed toner is stored in a waste toner storage unit 603. Thereafter, the surface of the photosensitive drum 100 is charged again by the charging device 200 to prepare for the next image formation.
  • the toner used in this embodiment is a spherical toner having an average particle diameter of 6 [xm] and an average circularity of 0.970.
  • Use of a toner having an average circularity of 0.950 or more is preferable from the viewpoint of greatly improving the capri characteristics and transferability.
  • photosensitive drum used in this embodiment will be described.
  • two types of drums, photosensitive drum A and photosensitive drum B, having different resins blended in the surface charge transport layer were used.
  • the work function varies depending on the surface resin.
  • the production method of each photosensitive drum will be described.
  • a conductive layer having a thickness of 15 m was formed on an aluminum cylinder, and an undercoat layer having a thickness of 0.7 [ ⁇ ] was provided on the conductive layer. Then, the charge generation layer coating material was dipped on the undercoat layer to form a charge generation layer.
  • the recoverability of the transfer residual toner at the two-pitch portion N was evaluated using the seal sheet 602 made of various materials.
  • the seal sheet 602 bonded and fixed to the insulating seating surface 604 is in contact with the photosensitive drum 100 at the tip and is muffled.
  • the calculated value of the contact pressure P (N) per unit length (lmm) in the longitudinal direction of the very thin seal sheet 602 with respect to the photosensitive drum 100 as used in an image forming apparatus is calculated based on the overload and deflection of the cantilever spring. Using the following general formula, it is calculated from the following formula (A).
  • the sag amount of the seal sheet 602 is ⁇ [mm]
  • the distance from the fixed end of the seal sheet to the upstream side of the contact ep with the electrophotographic photosensitive member is l [mm]
  • the thickness of the seal sheet The h is [mm].
  • the seal sheet 602 is in contact with the photosensitive drum 100 at almost the tip. For this reason, the distance 1 from the fixed end of the seal sheet 602 to the upstream of the contact point with the photosensitive drum 100 is approximated by the distance from the fixed end to the free end of the seal sheet 602 ′. Further, it is difficult to directly measure the amount of stagnation of the seal sheet 602. Therefore, the amount of stagnation of the seal sheet 602 is obtained by calculating force geometry from the thickness of the seal sheet 602, the position of the seating surface 602, and the contact position between the seal sheet 602 and the photosensitive drum 100. It was.
  • PET sheet (Toray Industries, Inc .: Lumirror (registered trademark))
  • PPS polyphenylene sulfide sheet
  • a sheet with a Teflon (registered trademark) sheet bonded to the surface of the PET sheet Nitoflon (registered trademark) bonded to the surface of the seal sheet B
  • the image forming apparatus described in FIG. 2 was configured using A or photosensitive drum B.
  • seal sheet A has the surface on which the A1 vapor deposition is performed in contact with the photosensitive drum 100.
  • the seal sheet F is formed by bringing the surface to which the Teflon (registered trademark) sheet is adhered into contact with the photosensitive drum 100.
  • the seal sheet A is usually electrically conductive but is bonded to the insulating seating surface 604, so that it is not electrically connected to other members.
  • the toner depositability of the transfer residual toner was evaluated. The results are shown in Table 1 together with the calculated values for the contact pressure of the seal sheet.
  • the recoverability of the transfer residual toner was evaluated based on the following four levels based on the amount of toner accumulated on the upstream side of the two-contact portion between the photosensitive drum 100 and the seal sheet 602.
  • the photosensitive drums A and B used in the experiment and the six types of seal sheets A to F are measured by the following measurement method. Evaluation was based on the measured work function.
  • the work function ( ⁇ ) is energy necessary for extracting electrons from the substance.
  • the work function can be measured by the following measuring method.
  • the material is quantified as energy (e v) for taking out electrons from, those capable of evaluating the charging polarity of the photosensitive drum and the sealing sheet.
  • the work function ( ⁇ ) is measured using a surface analyzer (AC-2, manufactured by Riken Keiki Co., Ltd.).
  • a deuterium lamp is used in the apparatus, the amount of irradiation light is appropriately set, monochromatic light is selected by a spectroscope, a spot size of 4 [mm] X 4 [mm], and energy running.
  • the photoelectrons emitted from the surface of the Sampnore are detected and can be calculated using the work function meter software incorporated in the surface analyzer.
  • the work function is measured with a repeatability (standard deviation) of 0.02 [eV].
  • the work function of the photosensitive drum 100 and the seal sheet 602 was measured under a high-temperature and high-humidity environment (temperature 30 ° C / humidity 80%).
  • the paper was used after 2000 sheets of images were formed on the entire surface of the paper (8%). This is because when the image forming apparatus is used for a long time in a high-temperature and high-humidity environment, the transfer residual toner is easily damped by the seal sheet 602. This is because the work function of is important.
  • the measurement light is irradiated with a spot of 4 [mm] X 4 [mm] as described above.
  • l [c m] Cut to a size of XI [cm] and fixed on the sample stage.
  • a cylindrical sample such as the photosensitive drum 100 is used as a sump nore
  • the cylindrical sample is cut to obtain a measurement sample piece having the shape shown in Fig. 4 (a).
  • the surface to be irradiated is fixed on the specified position of the Sampnore base so that the irradiation surface is smooth.
  • the emitted photoelectrons are efficiently detected by the detector (photomultiplier tube).
  • FIG. 5 shows an example of a chart obtained by using the surface analyzer for the seal sheet B.
  • the circles in Fig. 5 are measured values, and the broken lines are obtained by connecting the circles with approximate lines.
  • Figure 5 shows photon energy [eV] as the horizontal axis and Emission Yield [cps 0 ' 5 ] (photon yield per unit photon) as the vertical axis, with a constant slope [Emission Yield / photon energy].
  • the work function is indicated by the excitation energy value [eV] at the inflection point (shown in Fig. 5 (B)). In this Fig. 5, it is 5.33 [eV].
  • Table 2 shows the measurement results of the work functions of the photosensitive drum A and the seal sheets A to F measured by the above measurement method and the result of Experiment 1 shown in Table 1. From Table 2, it can be seen that the greater the work function difference between the photosensitive drum A work function 5.45 [eV] and the seal sheets A to F, the better the recovery of the transfer residual toner.
  • Table 3 shows the measurement results of the work functions of the photosensitive drum B and the seal sheets A, B, and D to F measured by the above measurement method together with the result of Experiment 1 shown in Table 1.
  • FIG. 6 shows the relationship between the absolute value of the work function difference between photoconductive drum 100 and seal sheet 602 obtained from Experiment 2 and the recoverability of residual toner. Indicates.
  • the horizontal axis in FIG. 6 represents the work function difference [eV] between the photosensitive drum 100 and the seal sheet 602, and the vertical axis represents the recoverability of the residual toner (the numerical value represents the toner accumulation stage).
  • the lower the vertical axis the better the recoverability.
  • the recoverability of the transfer residual toner is correlated with the absolute value of the work function difference between the photosensitive drum 100 and the seal sheet 602.
  • the preferable range is that if the work function difference between the photosensitive drum 100 and the seal sheet 602 is 0.25 [eV] or more, the photosensitive drum Good recoverability was obtained without transfer residual toner accumulating upstream of the contact nip between 100 and the seal sheet 602.
  • Figure 7 plots the results of Experiment 2 with the horizontal axis representing the calculated contact pressure between the photosensitive drum 100 and the seal sheet 602 and the vertical axis representing the work function difference between the photosensitive drum 100 and the seal sheet 602.
  • “ ⁇ ”, “ ⁇ ⁇ ”, “ ⁇ ”, and “X” in the shape of each plot represent the toner depositability in the four stages. “ ⁇ ” represents stage 1, “ ⁇ ⁇ ” represents stage 2, “ ⁇ ” represents stage 3, and “X” represents stage 4.
  • the difference between the electrophotographic photosensitive member and the work function is 0.25 [eV] or more. It can be seen that by using the seal member, transfer residual toner does not accumulate even in a high-temperature and high-humidity environment, and it is possible to suppress poor transfer residual toner collection.
  • the seal member is made of an insulating material (seal sheets B to F), or the seal member is bonded even if the seal member is conductive (seal sheet A).
  • insulating material such as silicon dioxide
  • seal member is bonded even if the seal member is conductive (seal sheet A).
  • the present invention is particularly effective when the opening direction of the photosensitive drum 100 and the seal sheet 602 faces downward in the gravitational direction.
  • the present invention in the case of the sealing sheet and nips unit ⁇ force filled ⁇ region between the electrophotographic photosensitive member is effective is there. That is, when the horizontal axis is 0 ° in the two-dimensional coordinates with the rotation center of the photosensitive drum 100 as the origin, the rotation angle ⁇ in the opposite direction to the rotation direction ⁇ of the photosensitive drum is 135 ° ⁇ ⁇ 225 °. This is the case. In the cleaning device of the present embodiment, the rotation angle ⁇ was 200 °.
  • the present invention is not limited to this.
  • the present invention is effective even if the tallying device is detachably provided from the image forming apparatus main body.
  • the process cartridge includes a charging roller 201, a developing device 400, and a tariff.
  • the present invention is effective if the process cartridge is provided with the force S described in the example provided with the cleaning device 600 and at least the cleaning device.
  • the static eliminator may be configured so as to eliminate static with an exposure apparatus that exposes the surface of the photosensitive drum 100.
  • the present invention can be used for an image forming apparatus such as a copying machine and a printer and a process cartridge used therefor.

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  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cleaning In Electrography (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Electrophotography Configuration And Component (AREA)

Abstract

Appareil de formation d'image dans lequel le toner laissé sur une feuille étanche après transfert se dépose dans un environnement à température et humidité élevées et qui évite le déversement du toner ainsi déposé. L'appareil de formation d'image comprend un tambour photosensible (100), une lame de nettoyage (601) pour racler le toner, une section (603) pour recevoir le toner raclé par la lame de nettoyage (601), et une feuille étanche (602) pour empêcher toute fuite de toner. En vue d'affecter la neutralisation du côté amont de la feuille étanche (602), dans la direction de déplacement du tambour (100), la différence de travail d'extraction entre la feuille étanche (602) et le tambour photosensible (100) est définie à 0,25 eV ou plus.
PCT/JP2006/313112 2006-06-30 2006-06-30 Cartouche de traitement et appareil de formation d'image WO2008001463A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/JP2006/313112 WO2008001463A1 (fr) 2006-06-30 2006-06-30 Cartouche de traitement et appareil de formation d'image
JP2008522266A JP4764481B2 (ja) 2006-06-30 2006-06-30 プロセスカートリッジ及び画像形成装置
EP06780679.4A EP2040130B1 (fr) 2006-06-30 2006-06-30 Cartouche de traitement et appareil de formation d'image
CN2006800394079A CN101292201B (zh) 2006-06-30 2006-06-30 处理盒和图像形成设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/313112 WO2008001463A1 (fr) 2006-06-30 2006-06-30 Cartouche de traitement et appareil de formation d'image

Publications (1)

Publication Number Publication Date
WO2008001463A1 true WO2008001463A1 (fr) 2008-01-03

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PCT/JP2006/313112 WO2008001463A1 (fr) 2006-06-30 2006-06-30 Cartouche de traitement et appareil de formation d'image

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EP (1) EP2040130B1 (fr)
JP (1) JP4764481B2 (fr)
CN (1) CN101292201B (fr)
WO (1) WO2008001463A1 (fr)

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JP2018180394A (ja) * 2017-04-18 2018-11-15 京セラドキュメントソリューションズ株式会社 画像形成装置
KR20200078342A (ko) * 2018-12-21 2020-07-01 캐논 가부시끼가이샤 클리닝 장치, 프로세스 카트리지 및 화상 형성장치
KR20200078363A (ko) * 2018-12-21 2020-07-01 캐논 가부시끼가이샤 크리닝 장치, 프로세스 카트리지 및 화상형성장치
JP2020101691A (ja) * 2018-12-21 2020-07-02 キヤノン株式会社 クリーニング装置、カートリッジ及び画像形成装置
JP2020101693A (ja) * 2018-12-21 2020-07-02 キヤノン株式会社 クリーニング装置、プロセスカートリッジ及び画像形成装置
US11022933B2 (en) 2019-05-17 2021-06-01 Canon Kabushi Kikaisha Process cartridge, image forming apparatus and cleaning apparatus
IT202200021093A1 (it) 2022-10-13 2024-04-13 Univ Degli Studi Di Torino Metodo per ottenere nanoparticelle lipidiche solide a partire da saponi naturali

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JP2013200528A (ja) * 2012-03-26 2013-10-03 Fuji Xerox Co Ltd 電子写真感光体、プロセスカートリッジ、及び画像形成装置
JP5963687B2 (ja) * 2013-01-18 2016-08-03 京セラドキュメントソリューションズ株式会社 ドラムユニット及びこれを備えた画像形成装置

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IT202200021093A1 (it) 2022-10-13 2024-04-13 Univ Degli Studi Di Torino Metodo per ottenere nanoparticelle lipidiche solide a partire da saponi naturali

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JPWO2008001463A1 (ja) 2009-11-26
EP2040130A1 (fr) 2009-03-25

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