WO2011136129A1 - 粉体収容器、粉体搬送装置及び画像形成装置 - Google Patents
粉体収容器、粉体搬送装置及び画像形成装置 Download PDFInfo
- Publication number
- WO2011136129A1 WO2011136129A1 PCT/JP2011/059871 JP2011059871W WO2011136129A1 WO 2011136129 A1 WO2011136129 A1 WO 2011136129A1 JP 2011059871 W JP2011059871 W JP 2011059871W WO 2011136129 A1 WO2011136129 A1 WO 2011136129A1
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- Prior art keywords
- toner
- powder
- container
- discharge
- opening
- Prior art date
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0865—Arrangements for supplying new developer
- G03G15/0874—Arrangements for supplying new developer non-rigid containers, e.g. foldable cartridges, bags
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0865—Arrangements for supplying new developer
- G03G15/0867—Arrangements for supplying new developer cylindrical developer cartridges, e.g. toner bottles for the developer replenishing opening
- G03G15/0868—Toner cartridges fulfilling a continuous function within the electrographic apparatus during the use of the supplied developer material, e.g. toner discharge on demand, storing residual toner, acting as an active closure for the developer replenishing opening
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/06—Developing structures, details
- G03G2215/066—Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material
- G03G2215/0682—Bag-type non-rigid container
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
- G03G2221/1645—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for conducting air through the machine, e.g. cooling
Definitions
- the present invention relates to a powder container for storing powder therein, a powder transport apparatus for transporting the powder stored in the powder container to a discharge unit, and an image forming apparatus including the powder transport apparatus.
- a toner image is formed by a developing device using a developer generally called a toner or a carrier. ing.
- a toner cartridge containing toner is usually mounted on the image forming apparatus, and when the toner in the cartridge runs out, it is replaced with a new cartridge. I try to replenish.
- the transport method using the auger has a drawback that the structure is complicated because it is necessary to install and rotate the screw inside the container. Further, in this transport system, the accumulated toner is forcibly transported by the auger, so that a load is applied to the toner and there is a risk of toner aggregation or deterioration. Furthermore, providing the screw inside the container to be replaced raises the cost of consumables, and at the same time has the problem of leading to an increase in environmental load due to resource consumption.
- the conveyance method using the screw bottle does not require a screw inside the container, so that the configuration is simple.
- the container itself is rotated and used, so the shape of the container is usually a shape in which an outlet is provided on one side of a cylindrical container body (a shape like a bottle lying sideways).
- the amount of toner that can be stored is smaller than that of this container, and that a hand is slippery and difficult to hold at the time of replacement.
- the container is vibrated (reciprocating) by applying an impact to the container from the outside or by bringing the container into contact with a stopper.
- toner is moved / discharged by inertial force (see Patent Document 1).
- the toner loaded in the container moves together by vibration, so that it is possible to secure a sufficient toner conveyance speed per vibration reciprocation.
- the toner peak collapses and spreads thinly, so the toner transport speed per round trip of vibration decreases with the height of the toner peak, and the transport speed is reduced. There is a problem that it cannot be maintained.
- the vibration generated in the container affects the writing system and disturbs the image.
- Patent Document a method has been proposed in which a deformable container is used, and a toner is sent out by pressing and moving a convex portion from the outside of the container. 2). According to this transport method, toner can be transported with a small stress, toner aggregation and deterioration can be suppressed, and there is little possibility of occurrence of abnormal images due to large vibrations or impacts.
- JP 2002-46843 A Japanese Patent Laid-Open No. 11-143195
- the container since the container is pushed by the convex portion and gradually collapses as the toner feeding operation is repeated, the toner gradually becomes difficult to move in the container, and the toner is transported. There is a problem that it becomes difficult. Further, when the toner is pushed out toward the discharge port by the convex portion, the container may be deformed into an unintended shape, so that the toner discharge may become unstable or the container may not be deformed into an appropriate shape. . Furthermore, the entire container moves against the pressing force of the convex portion, and the toner cannot be sent out, and the toner in the container may not be sent to the end.
- the present invention has been made in view of the above, and a powder container, a powder conveyance device, and an image forming apparatus capable of stabilizing a powder conveyance amount and reducing a residual powder amount. Is something to offer.
- the invention of claim 1 is formed so that an opening is formed at one end, powder is contained inside, and the material is deformable by a flexible material.
- a powder container; and a discharge unit that is provided at one end where the opening is formed, is fixed to a powder transfer device, and discharges the powder delivered from the opening to the powder transfer device;
- a feeding member that is provided at the end opposite to the opening side and that is moved from the outside of the powder container to the opening by the locking portion of the powder conveying device is in a direction opposite to the moving direction thereof.
- a locked portion that is locked while being urged, and the powder is sent out from the opening by pushing the delivery member from the outside of the powder container and moving it to the opening. It is characterized by that.
- the powder container in the powder container according to the first aspect of the present invention, has a ventilation portion that allows ventilation inside and outside.
- the air in the powder container can be discharged from the ventilation part to the outside along with the deformation.
- the internal pressure is possible to prevent the internal pressure from increasing due to the deformation of the powder container, and it is possible to prevent problems such as excessive discharge of powder or scattering of powder at the transport destination.
- the powder container can swell due to its own resilience, the weight of the powder, etc., so that air can be sucked from the ventilation part.
- the powder container can be easily expanded and returned to the original shape, and the powder can be loosened by the sucked air.
- the transportability of the body can be improved, and stable powder transport can be performed.
- the vent is provided in the powder container.
- the vent is provided on the upper surface of the powder container.
- the powder container in the powder container according to the third aspect, is formed of a member having air permeability.
- the ventilation portion is provided in the discharge portion.
- a seventh aspect of the present invention is the powder container according to the sixth aspect, wherein the ventilation portion is provided on an upper surface of the discharge portion so as to face a discharge port provided in the discharge portion. It is.
- the ventilation part By providing the ventilation part on the upper surface of the discharge part, it is possible to prevent the ventilation part from being clogged with powder. Further, by providing the ventilation portion so as to face the discharge port, the exhaust can be performed more effectively.
- a powder container having a powder container having an opening formed at one end thereof, containing powder therein, and being deformable with a flexible material, and the powder
- a feed member that feeds the powder from the opening by being pushed in from the outside of the body container and moving to the opening; and one end of the powder container in which the opening is formed;
- a discharge unit that is fixed to the transfer device and discharges the powder delivered from the opening to the powder transfer device; and provided at an end of the powder storage unit opposite to the opening side, And a locked portion that is locked while being biased in a direction opposite to the moving direction of the delivery member by the locking portion of the powder conveyance device.
- a ninth aspect of the present invention is the powder conveying apparatus according to the eighth aspect, wherein the locking portion is configured to be movable in the opposite direction to the discharge portion side, and the locking portion is interposed via an elastic member.
- the discharge portion side is configured to be biased in the opposite direction.
- the powder container is pushed toward the discharge part by the moving delivery member, so that the engaging part that engages the end of the powder container is also pulled toward the discharge part.
- the locking portion is then pulled back in the direction opposite to the discharge portion side by the biasing force of the elastic member.
- the powder container is provided with a ventilation portion that allows ventilation inside and outside.
- the powder container can swell due to its own resilience, the weight of the powder, etc., so that air can be sucked from the ventilation part.
- the powder container can be easily expanded and returned to the original shape, and the powder can be loosened by the sucked air.
- the transportability of the body can be improved, and stable powder transport can be performed.
- the invention of claim 11 is the powder conveying apparatus according to claim 10, wherein the ventilation portion is provided in the powder container.
- the ventilation portion is provided on an upper surface of the powder accommodating portion.
- the vent is provided in the discharge section.
- the invention of claim 14 is the powder conveying apparatus according to claim 13, wherein the ventilation portion is provided on the upper surface of the discharge portion so as to face the discharge port provided in the discharge portion. It is.
- the ventilation part By providing the ventilation part on the upper surface of the discharge part, it is possible to prevent the ventilation part from being clogged with powder. Further, by providing the ventilation portion so as to face the discharge port, the exhaust can be performed more effectively.
- a fifteenth aspect of the invention is an image forming apparatus including the powder conveyance device according to the eighth aspect.
- the image forming apparatus includes the powder conveyance device according to the eighth aspect, the above-described effects by these powder conveyance devices can be obtained.
- irregular deformation of the powder container can be suppressed, so that poor powder conveyance can be suppressed, the amount of powder conveyance can be stabilized, and the amount of residual powder can be reduced. There is an effect that reduction can be achieved.
- FIG. 1 is a configuration diagram showing a printer as an image forming apparatus according to the present invention.
- FIG. 2 is an enlarged view showing an image forming unit of the image forming apparatus.
- FIG. 3 is a perspective view showing the configuration of the toner supply device.
- FIG. 4 is a configuration diagram of the toner cartridge.
- FIG. 5 is an exploded view of the toner cartridge.
- 6A is a plan view showing a state before the toner cartridge is mounted on the drawer tray
- FIG. 6B is a plan view showing a state where the toner cartridge is mounted on the drawer tray.
- FIG. 7 is an enlarged view of the fixing portion.
- FIG. 8 is a perspective view of the drawer tray.
- FIG. 9 is a perspective view of a state in which the drawer tray is attached to the main body side frame.
- FIG. 10 is an enlarged view of the main body side frame.
- FIG. 11 is a cross-sectional side view of the main body side frame and the drawer tray.
- FIG. 12 is a sectional side view of the drawer tray and the like.
- FIG. 13 is a configuration diagram of the toner conveying device.
- FIG. 14 is a sectional side view of the drawer tray.
- FIG. 15 is a side view of the delivery member and the leg member.
- FIG. 16 is a diagram for explaining an operation when the delivery member is switched from the standing state to the falling state.
- FIG. 17 is a view for explaining the operation when the delivery member is switched from the fallen state to the standing state.
- FIG. 18 is a diagram for explaining a toner delivery operation.
- FIG. 19 is a diagram illustrating a state of exhaust from the ventilation portion.
- FIG. 20 is a diagram illustrating a state where the air is sucked from the ventilation portion.
- FIG. 21 is a diagram illustrating another embodiment of the toner cartridge.
- FIG. 22 is an enlarged cross-sectional view of a main part showing a configuration in which the strength of the portion where the hole portion of the toner accommodating portion is formed is improved.
- FIG. 23A is a diagram showing a state where the toner container is not reduced in volume
- FIG. 23B is a diagram showing a state where the toner container is reduced in volume.
- FIG. 24 is a view for explaining the positional relationship between the opening and the locked portion in the toner storage portion.
- FIG. 25 is a diagram for explaining the position of the opening in the toner storage unit and the position of the top of the inner surface pushed in by the delivery member.
- FIG. 26 is a diagram illustrating a configuration when the locked portion of the container is disposed below the lower end of the opening.
- 27A and 27B are longitudinal sectional views of the toner storage portion.
- FIG. 27A is a diagram illustrating a state where the toner storage portion is expanded
- FIG. 27B is a diagram illustrating a state where the toner storage portion is folded.
- 28A and 28B are cross-sectional views of the toner storage portion, where FIG. 28A is a diagram illustrating a state where the toner storage portion is expanded, and FIG. 28B is a diagram illustrating a state where the toner storage portion is folded.
- FIGS. 31A and 31B are cross-sectional views of the toner storage portion formed of a single sheet material, where FIG. 29A is a diagram illustrating a state where the toner storage portion is inflated, and FIG. 29B is a state where the toner storage portion is folded.
- FIG. FIG. 30 is a cross-sectional view illustrating a configuration in which a member to be locked is attached and attached to the inner surface of the toner accommodating portion.
- FIGS. 31A and 31B are diagrams showing a configuration in which a member to be locked is attached and attached to the outer surface of the toner accommodating portion, where FIG. 31A is a perspective view and FIG. FIGS.
- FIG. 32A and 32B are diagrams showing a configuration in which the member to be locked is attached by sandwiching the end portion of the toner accommodating portion, where FIG. 32A is an exploded view and FIG. 32B is a cross-sectional view.
- FIG. 33 is a diagram showing a configuration in which the locked member is attached by clamping the end portion of the toner accommodating portion.
- FIG. 33A is a perspective view when the locked member is formed in a columnar shape.
- FIG. 34 is a cross-sectional view of the fixing portion.
- FIG. 35 is a perspective view of an eccentric weight.
- FIG. 36 is a perspective view of the fixing portion.
- FIG. 37 is a perspective view of the fixing portion.
- FIG. 38 is a cross-sectional view of a state where the toner cartridge is fixed to the fixing portion.
- FIG. 39 is a schematic diagram showing the configuration of another embodiment of the vibration applying means.
- FIG. 40 is a schematic diagram showing the configuration of still another embodiment of the vibration applying means.
- FIG. 41 is a diagram illustrating a sending operation when the remaining amount of toner is large.
- FIG. 42 is a diagram illustrating a sending operation when the remaining amount of toner is reduced.
- FIG. 43 is an enlarged cross-sectional view of the discharge part and its peripheral part.
- FIG. 44 is a schematic diagram showing the configuration of an optical toner sensor.
- FIG. 45 is a block diagram showing a control system of the delivery member.
- FIG. 46 is a flowchart for explaining a control method of the delivery member.
- FIG. 47 is a diagram illustrating an example in which the moving speed of the delivery member is set based on the remaining amount of toner.
- FIG. 1 is a configuration diagram illustrating a printer as an image forming apparatus
- FIG. 2 is an enlarged view illustrating an image forming unit thereof.
- image forming portions 6Y, 6M, 6C, and 6Bk corresponding to the respective colors (yellow, magenta, cyan, and black) are arranged in parallel so as to face the intermediate transfer belt 11 of the intermediate transfer unit 10. Yes.
- the four image forming units 6Y, 6M, 6C, and 6Bk installed in the apparatus main body 100 have substantially the same structure except that the toner colors used in the image forming process are different. 6, the alphabets (Y, M, C, Bk) of the reference numerals of the photosensitive drum 6, the photosensitive drum 1, and the primary transfer bias roller 9 are omitted.
- the image forming unit 6 includes a photosensitive drum 1 as an image carrier, a charging unit 4 disposed around the photosensitive drum 1, a developing device 5 as a developing unit, and a cleaning unit 2. (Only the developing device 5 is shown in FIG. 1). An image forming process (charging process, exposure process, developing process, transfer process, cleaning process) is performed on the photosensitive drum 1, and a desired toner image is formed on the photosensitive drum 1.
- the photosensitive drum 1, the charging unit 4, the developing device 5, and the cleaning unit 2 constituting the image forming unit 6 are configured so as to be detachable from the image forming apparatus main body 100. Each of them can be replaced with a new one when it reaches the end of its life.
- the photosensitive drum 1, the charging unit 4, the developing device 5, and the cleaning unit 2 constituting the image forming unit 6 are each a single unit. It may be a process unit that is detachably installed on the main body 100. In this case, workability when performing maintenance of the image forming unit 6 is improved.
- the developing device 5 includes a developing roller 51 as a developer carrying member facing the photosensitive drum 1, a doctor blade 52 as a developer regulating member installed below the developing roller 51, a developer It is composed of two conveying screws 55 and 56 as developer stirring and conveying members disposed in the accommodating portions 53 and 54, a case 50 for accommodating the developer G, and the like.
- the developer G a two-component developer composed of a carrier and a toner is used.
- the developing device 5 is provided with a toner concentration sensor (not shown) that detects the toner concentration in the developer G.
- a two-component developer is used as the developer G, but a one-component developer made of toner may be used.
- the surface of the developing roller 51 is roughened in the range of 5 to 35 ⁇ m Rz by sandblasting.
- Various blasting processes other than sandblasting can also be used.
- a plurality of grooves having a depth of 0.05 to 1 mm may be formed.
- the grooves can be arranged in a direction perpendicular to the rotation direction of the developing roller 51 or at an angle, or arranged in an iris shape so as to cross each other, or formed in a corrugated shape. In this way, by forming a groove on the surface of the developing roller 51 or roughening the surface, the developer is prevented from sliding on the developing roller 51, and the developer is placed on the developing roller 51. It becomes possible to adhere without interruption.
- the photosensitive drum 1 is rotationally driven in a clockwise direction in FIG. 2 by a driving unit (not shown). Then, the surface of the photosensitive drum 1 is uniformly charged by the charging roller 4a at the position of the charging unit 4 (charging process).
- the charging roller 4a that is brought into contact with the photosensitive drum 1 is used as the charging means, but a charging charger or the like that is disposed in non-contact with the photosensitive drum 1 may be used.
- the surface of the photosensitive drum 1 reaches an irradiation position of a laser beam L emitted from an exposure unit (not shown), and an electrostatic latent image is formed by exposure scanning at this position (exposure process).
- the surface of the photosensitive drum 1 reaches a position facing the developing roller 51 of the developing device 5, and the electrostatic latent image is developed at this position to form a desired toner image (developing process).
- the surface of the photosensitive drum 1 reaches a position facing the intermediate transfer belt 11 and the first transfer bias roller 9, and the toner image on the photosensitive drum 1 is transferred onto the intermediate transfer belt 11 at this position. (Primary transfer process). At this time, a small amount of untransferred toner remains on the photosensitive drum 1.
- a roller contact system in which the primary transfer bias roller 9 is brought into contact with the photosensitive drum 1 is employed.
- a belt contact system in which a belt is brought into contact with the photosensitive drum 1 or a transfer charger is used.
- a non-contact type may be used.
- the surface of the photoreceptor 1 reaches a position facing the cleaning unit 2, and untransferred toner remaining on the photoreceptor drum 1 at this position is collected by the cleaning blade 2a (cleaning step).
- an electrostatic recovery system that recovers untransferred toner by bringing a brush or roller to which a cleaning bias is applied into contact with the photosensitive drum 1 may be applied.
- the neutralization unit may be of a type that forcibly lowers the residual potential using corona charging, or may be a type of reduction of the residual potential by exposing the photosensitive drum 1 to light. Further, depending on the type of the photoconductive drum 1 and the charging method of the photoconductive drum 1, the charge eliminating unit can be omitted. Thus, a series of image forming processes performed on the photosensitive drum 1 is completed.
- the above-described image forming process is performed by each of the four image forming units 6Y, 6M, 6C, and 6Bk. That is, based on the image information read by the reading unit 32 shown in FIG. 1, a laser beam L (see FIG. 2) is sent from the exposure unit (not shown) disposed below the image forming unit to each image forming unit 6Y, Irradiation is directed toward the photosensitive drum 1 of 6M, 6C, and 6Bk. Specifically, the exposure unit emits laser light L from a light source and irradiates the photosensitive drum 1 via a plurality of optical elements while scanning the laser light L with a polygon mirror that is rotationally driven. Thereafter, the toner images of the respective colors formed on the respective photosensitive drums 1 through the development process are transferred onto the intermediate transfer belt 11 in an overlapping manner. Thus, a color image is formed on the intermediate transfer belt 11.
- Each of the four primary transfer bias rollers 9Y, 9M, 9C, and 9BK sandwiches the intermediate transfer belt 11 between the photosensitive drums 1Y, 1M, 1C, and 1Bk to form a primary transfer nip. Then, a transfer bias having a polarity opposite to the polarity of the toner is applied to the primary transfer bias rollers 9Y, 9M, 9C, and 9Bk.
- the intermediate transfer belt 11 travels in the direction of the arrow in the figure, and sequentially passes through the primary transfer nips of the primary transfer bias rollers 9Y, 9M, 9C, and 9Bk. In this way, the toner images of the respective colors on the photosensitive drums 1Y, 1M, 1C, and 1Bk are primarily transferred while being superimposed on the intermediate transfer belt 11.
- the intermediate transfer belt 11 on which the toner images of the respective colors are transferred in a superimposed manner reaches a position facing the secondary transfer roller 19.
- the secondary transfer backup roller 12 sandwiches the intermediate transfer belt 11 with the secondary transfer roller 19 to form a secondary transfer nip.
- the color toner image formed on the intermediate transfer belt 11 is transferred onto a transfer material P such as transfer paper conveyed to the position of the secondary transfer nip.
- a transfer material P such as transfer paper conveyed to the position of the secondary transfer nip.
- untransferred toner that has not been transferred to the transfer material P remains on the intermediate transfer belt 11, but the remaining toner on the intermediate transfer belt 11 is removed by a belt cleaning device (not shown).
- a series of transfer processes performed on the intermediate transfer belt 11 is completed.
- the transfer material P transported to the position of the secondary transfer nip is transported from a paper feed unit 26 disposed below the apparatus main body 100 via a paper feed roller 27, a registration roller pair 28, and the like. It has been done. Specifically, a plurality of transfer materials P such as transfer paper are stored in the paper supply unit 26 in a stacked manner. When the paper feed roller 27 is rotated in the counterclockwise direction in FIG. 1, the uppermost transfer material P is fed between the rollers of the registration roller pair 28.
- the transfer material P conveyed to the registration roller pair 28 temporarily stops at the position of the roller nip of the registration roller pair 28 whose rotation driving has been stopped. Then, the registration roller pair 28 is rotationally driven in time with the color image on the intermediate transfer belt 11, and the transfer material P is conveyed toward the secondary transfer nip. In this way, a desired color image is transferred onto the transfer material P.
- the transfer material P on which the color image is transferred at the position of the secondary transfer nip is conveyed to the position of the fixing unit 20.
- the color image transferred to the surface is fixed on the transfer material P by heat and pressure generated by the fixing roller and the pressure roller.
- the transfer material P is discharged to the outside of the apparatus through a pair of discharge rollers 29.
- the transferred P discharged from the apparatus main body 100 by the discharge roller pair 29 is sequentially stacked on the stack unit 30 as an output image.
- a series of image forming processes in the image forming apparatus is completed.
- a toner replenishing unit 31 is disposed above the intermediate transfer unit 10.
- the toner replenishing unit 31 includes four toner replenishing devices (developer replenishing devices) 60Y, 60M, 60C, and 60Bk filled with toner of each color. From each toner replenishing device 60Y, 60M, 60C, 60Bk, a toner transport path extends to the corresponding developing device 5Y, 5M, 5C, 5Bk, and the toner replenishing device 60Y, 60M, 60C is passed through this toner transport path. , 60Bk to supply toner to the developing devices 5Y, 5M, 5C, 5Bk. As a result, toner can be newly supplied according to the amount of toner consumed by each of the developing devices 5Y, 5M, 5C, and 5Bk, and the developing device can be used over a long period of time.
- the four toner replenishing devices 60Y, 60M, 60C, and 60Bk have the same configuration except that they store different color toners. Therefore, the configuration of one toner replenishing device will be described below.
- FIG. 3 is a perspective view showing the configuration of the toner replenishing device.
- the toner replenishing device 60 includes a toner cartridge 61 as a toner container (powder container) filled with toner, a drawer tray 62 as a holding member for holding the toner cartridge 61, and a toner cartridge.
- the sub hopper 64 is connected to a toner transport pipe (not shown) for transporting the toner stored therein toward the developing device.
- the drawer tray 62 is attached to the main body side frame 65 so as to be movable in the horizontal direction.
- the drawer tray 62 can be pulled out from the apparatus main body.
- the drawer tray 62 is moved in the direction of the arrow X2 in the figure, the drawer tray 62 is drawn. Can be accommodated in the apparatus main body.
- FIG. 4 is a configuration diagram of the toner cartridge 61.
- the toner cartridge 61 includes a toner storage unit (powder storage unit) 66 that stores toner as powder and a discharge unit 67 that discharges the toner in the toner storage unit 66 to the outside. It is configured.
- the toner containing portion 66 is formed of a deformable longitudinal bag member having a toner inlet (powder inlet) 66a as an opening opened on one end side.
- a flexible material is used as the material of the toner container 66, and examples thereof include a thin sheet material made of PET.
- the toner container 66 shown in FIG. 4 is configured by bonding four sheet materials, but may be configured by connecting one sheet material in a bag shape.
- the toner container 66 is provided with an opening holding member 68 that holds the toner inlet 66a in an open state so that the toner can be easily filled from the toner inlet 66a.
- PxP toner (average particle size 5.8 ⁇ m) manufactured by Ricoh Co., Ltd. is accommodated in the toner accommodating portion 66.
- the toner container 66 can store about 500 g of toner.
- the material for the toner container 66 includes PA (polyamide resin, nylon), PE (high density polyethylene, low density polyethylene), PC (polycarbonate resin), PP (polypropylene resin), PS (polystyrene resin), PAN (polyacrylonitrile). Resin), PET (polyester resin), PVC (polyvinyl chloride resin), PVDC (polyvinylidene chloride resin) and other various resin sheets can be used alone or in combination. In the present embodiment, four types of resin sheets of PP, PET, PA, and LDPE (low density polyethylene) are bonded together.
- PA polyamide resin, nylon
- PE high density polyethylene, low density polyethylene
- PC polycarbonate resin
- PP polypropylene resin
- PS polystyrene resin
- PAN polyacrylonitrile
- Resin polyethylene
- PET polyyester resin
- PVC polyvinyl chloride resin
- PVDC polyvinylidene chloride resin
- a thin film forming method such as a PVD (Physical Vapor Deposition) method or a CVD (Chemical Vapor Deposition) method can be applied.
- a PVD Physical Vapor Deposition
- CVD Chemical Vapor Deposition
- the adhesion is improved by using LDPE for the innermost sheet layer.
- the discharge portion 67 is formed with an introduction port 67a for introducing toner and a discharge port 67b for discharging toner.
- the discharge port 67b is disposed so as to face downward. Thereby, the toner can be dropped by gravity from the discharge port 67b and sent to the sub hopper 64, and the configuration for discharging the toner can be simplified.
- an inclined surface 67c inclined downward from the introduction port 67a toward the discharge port 67b is provided in the discharge unit 67 so that the toner is smoothly conveyed to the discharge port 67b.
- the inclination angle of the inclined surface 67c with respect to the horizontal plane is desirably set to 10 ° or more.
- a slide shutter 67d for opening and closing the discharge port 67b is provided on the bottom surface (lower surface) of the discharge port 67b so as to be slidable in the arrow Y direction in FIG. 4B.
- the upper surface of the discharge portion 67 is provided with a ventilation portion 67i that allows ventilation inside and outside.
- the ventilation part 67i includes a ventilation hole 67j formed in the upper surface of the discharge part 67 and a filter 67k for preventing toner leakage attached to the ventilation hole 67j.
- the ventilation portion 67i is disposed on the opposite side via a moving path along which the toner introduced from the introduction port 67a moves to the discharge port 67b so as to face the discharge port 67b.
- symbol 67g is a projection part and the code
- symbol 67h is a protrusion piece part.
- FIG. 5 is an exploded view of the toner cartridge 61.
- 4A is a perspective view of the discharge portion 67
- FIG. 4B is a perspective view of the opening holding member 68
- FIG. 3C is a perspective view of the toner holding portion 66 provided with the opening holding member 68.
- the opening holding member 68 is formed by integrally molding a short cylindrical insertion portion 68a and a flange-like connection portion 68b.
- the insertion portion 68 a can be inserted into the toner inlet 66 a of the toner storage portion 66.
- the toner accommodating portion 66 and the opening holding member 68 are bonded together by heat welding, but may be bonded by an adhesive or the like.
- the outer shape of the insertion portion 68a is formed in a substantially hexagonal shape so that the insertion location of the insertion portion 68a can be easily suppressed from the vertical direction in FIG.
- a pair of groove portions 67 e that can be engaged with the connecting portion 68 b of the opening holding member 68 are provided on the introduction port 67 a side of the discharge portion 67.
- the opening holding member 68 is inserted into the groove portion 67e from above and engaged with each other, whereby the toner containing portion 66 and the discharge portion 67 are connected.
- a sealing material 69 is provided at a connection portion between the discharge portion 67 and the opening holding member 68 so that toner does not leak from the connection portion.
- FIG. 6A is a plan view showing a state before the toner cartridge 61 is mounted on the drawer tray 62
- FIG. 6B is a plan view showing a state where the toner cartridge 61 is mounted on the drawer tray 62.
- reference numeral 62d is a mounting surface
- reference numerals 62i and 62j are recesses
- reference numeral 81 is a delivery member
- reference numeral 82 is a leg member.
- recesses 67f are provided on both side surfaces of the discharge portion 67, respectively.
- a convex portion 62a is provided at a portion of the drawer tray 62 corresponding to each concave portion 67f, and each convex portion 62a can be inserted into the corresponding concave portion 67f.
- a hole 66b serving as a locked portion that is locked to the other locking portion is formed at the end of the toner containing portion 66 opposite to the discharge portion 67 side.
- a hook-like hooking portion 62b as a locking portion is provided at a portion of the drawer tray 62 corresponding to the hole 66b.
- the hook 62b is inserted into the hole 66b to be locked, and the protrusion 62a is inserted into the recess 67f, so that the toner cartridge 61 is attached to the drawer tray 62. .
- the convex portion 62a and the concave portion 67f are normally in a non-contact state.
- the toner cartridge 61 moves in the longitudinal direction when the drawer tray 62 is pulled out or stored in the apparatus main body, the movement of the toner cartridge 61 in the longitudinal direction is restricted by the projection 62a coming into contact with the recess 67f. It is like that.
- each convex portion 62a (or each concave portion 67f) is formed in the same shape as each other, but it is also possible to prevent erroneous mounting of the toner cartridge 61 by using different shapes.
- the hook 62b is attached to the drawer tray 62 so as to be movable in the direction of arrow Q in the figure. That is, the hook portion 62b is configured to be movable in the direction opposite to the discharge portion 67 side when the toner cartridge 61 is mounted on the drawer tray 62 (the state shown in FIG. 6B). Further, as shown in FIG. 6A, the hook 62b is urged to the right side of the figure by a torsion coil spring 62k as an elastic member.
- the hook portion 62b is inserted into the hole 66b of the toner storage portion 66 and hooked, the hook portion 62b is pulled in the opposite direction to the discharge portion 67 by the urging force of the torsion coil spring 62k. 66 is held in a predetermined position.
- a member other than the torsion coil spring can be applied as the elastic member for pulling the hook portion 62b, here, the configuration for pulling the hook portion 62b is made compact by using the torsion coil spring 62k.
- FIG. 7 is an enlarged view of the fixing portion 63.
- 4A shows a state before the toner cartridge 61 is fixed to the fixing portion 63
- FIG. 4B shows a state where the toner cartridge 61 is fixed to the fixing portion 63.
- FIG. 7 the fixing portion 63 extends over the main body portion 70 connected to the upper portion of the sub hopper 64, the fixing arm 71 attached to the upper portion of the main body portion 70, and the fixing arm 71 and the main body portion 70.
- An attached spring member 72 and a shutter opening member 73 attached to the main body 70 below the fixed arm 71 are provided. Note that one fixed arm 71, one spring member 72, and one shutter opening member 73 are provided on the front side and the back side in the drawing, respectively.
- the fixed arm 71 is formed in a substantially C shape having a recess 71a.
- the fixed arm 71 is attached to the main body 70 so as to be rotatable about a horizontal support shaft 71b disposed in an intermediate portion thereof. By rotating the fixed arm 71 around the support shaft 71b, the fixed arm 71 can be switched between a fixed release position shown in FIG. 7A and a fixed position shown in FIG. 7B. ing.
- the spring member 72 is a tension coil spring, one end of which is attached to the fixed arm 71 and the other end is attached to the main body 70. As shown in FIGS. 7A and 7B, when the fixed arm 71 rotates between the fixed position and the fixed release position, the end portion of the spring member 72 attached to the fixed arm 71 turns the fixed arm 71. It moves over the dynamic fulcrum (support shaft 71b). As described above, as the fixed arm 71 rotates, the spring member 72 exceeds the rotation fulcrum, so that the spring member 72 biases the fixed arm 71 in the direction in which the fixed arm 71 rotates.
- the discharge portion 67 is provided with a protruding portion 67g as a fixed portion fixed by the fixing arm 71.
- One protrusion 67g is provided on each side of the discharge portion 67 (see FIG. 4A or 4C).
- the shutter opening member 73 is rotatably attached to the main body 70 around a horizontal support shaft 73b. Further, the shutter opening member 73 has a concave portion 73 a for holding the convex portion 670 d of the slide shutter 67 d provided in the discharge portion 67.
- a notch portion 70 a is formed in the main body portion 70 of the fixing portion 63.
- L-shaped projecting piece portions 67h that can come into contact with the upper portions of the cutout portions 70a are provided.
- the toner cartridge 61 is mounted on the drawer tray 62 as described in FIG. Then, the drawer tray 62 is moved in the direction in which it is accommodated in the apparatus main body (the direction of the arrow X2 in FIG. 3).
- the discharge portion 67 of the toner cartridge 61 approaches the fixed portion 63, the protrusion 67g provided on the discharge portion 67 is connected to one end portion of the fixed arm 71 (as shown in FIG. 7A).
- the fixed arm 71 is rotated counterclockwise in the figure against the urging force of the spring member 72. Thereby, the fixed arm 71 is switched from the fixed release position shown in FIG. 7A to the fixed position shown in FIG.
- the protrusion 67g is housed in the recess 71a of the fixed arm 71, and the other end (the left end in the figure) 71d of the fixed arm 71 and the main body. It is fixed by being sandwiched between 70 edges. Further, when the spring member 72 exceeds the rotation fulcrum of the fixed arm 71 with the rotation of the fixed arm 71, the spring member 72 is biased in a direction to hold the fixed arm 71 at the position after switching.
- the protruding piece portion 67h provided in the discharging portion 67 is inserted into the notched portion 70a of the main body portion 70, and the protruding piece portion 67h is notched. It abuts on the upper part of the portion 70a (see FIG. 7B). Thereby, the vertical shaking of the discharge part 67 is prevented.
- the slide shutter 67d provided in the discharge portion 67 contacts the shutter opening member 73, and the shutter opening member 73 is rotated in the clockwise direction in the drawing. Then, when the shutter opening member 73 moves to the position shown in FIG. 7B, further rotation of the shutter opening member 73 is restricted, so that the slide shutter 67 d is located behind the discharge portion 67 by the shutter opening member 73. Moves when pressed. As a result, the slide shutter 67d (discharge port) is opened, and the toner can be discharged from the discharge portion 67 to the sub hopper 64. Further, simultaneously with the movement of the shutter opening member 73 to the position of FIG. 7B, the convex portion 670d of the slide shutter 67d is inserted and held in the concave portion 73a of the shutter opening member 73. As described above, the fixing of the toner cartridge 61 to the fixing portion 63 is completed.
- the drawer tray 62 is moved in the direction of drawing out from the apparatus main body (the direction of the arrow X1 in FIG. 3).
- the toner cartridge 61 moves to the left in FIG. 7B, and the projection 67 g provided on the discharge portion 67 pushes the other end 71 d of the fixed arm 71, so that the urging force of the spring member 72 is applied.
- the fixed arm 71 is rotated counterclockwise. As a result, the fixed arm 71 moves from the fixed position shown in FIG. 7B to the fixed release position shown in FIG. 7A, and the protruding portion 67 g is detached from the fixed arm 71.
- the protruding piece portion 67h and the slide shutter 67d provided in the discharge portion 67 are detached from the notch portion 70a and the shutter opening member 73, respectively, and the fixing of the toner cartridge 61 is released. Further, the slide shutter 67d detached from the shutter opening member 73 is slid in a direction to close the discharge port by receiving a biasing force such as a spring (not shown) and prevents toner leakage from the discharge port. .
- FIG. 8 is a perspective view of the drawer tray 62.
- the drawer tray 62 has a pair of side walls 62 c that support both side surfaces of the toner cartridge 61, and a placement surface 62 d on which the toner cartridge 61 is placed.
- a main reference shaft 62e that serves as a main reference when the side wall 62c is attached to the main body side frame 65 is disposed at the end on the near side in the drawing.
- the main reference shaft 62e is used as a support shaft of a transmission gear 74 that transmits a driving force to a toner conveying device described later.
- one slave reference shaft 62f is provided as a reference when each is attached to the main body side frame 65.
- FIG. 9 is a perspective view showing a state in which the drawer tray 62 is attached to the main body side frame 65.
- the main body side frame 65 has a pair of guide rails 65 a extending in the drawing direction X ⁇ b> 1 of the drawing tray 62 and the accommodating direction X ⁇ b> 2. Further, the upper end edge of each guide rail 65 a is inserted into a groove 62 g formed on both side walls 62 c of the drawer tray 62. Thereby, the drawer tray 62 is configured to be movable in the drawing direction X1 and the accommodating direction X2 along the guide rail 65a.
- a first positioning recess 65b that can be fitted to the main reference shaft 62e of the drawer tray 62 is formed at the front end of the main body side frame 65 (see FIG. 10).
- a second positioning recess 65c that can be fitted to the slave reference shaft 62f is formed at the end on the far side in FIG.
- a drive gear 75 driven by a drive device is provided at the front end of the main body side frame 65 in the figure.
- the drive gear 75 is connected to the transmission gear 74 in a state in which the drawer tray 62 is accommodated in the apparatus main body and positioned on the main body side frame 65.
- the main body side frame 65 is provided with a pressurizing member 76 that pressurizes and fixes the drawer tray 62.
- the pressing member 76 is configured by combining two levers. When the drawer tray 62 is moved in the accommodating direction X2, the drawer tray 62 is pressed by the two levers so as to sandwich the convex portion 62h provided on the lower surface of the drawer tray 62, thereby making the drawer tray 62 the first and second positioning concave portions. It is adapted to be pressed against the 65b and 65c sides.
- the drawer tray 62 is provided with a toner conveying device (powder conveying device) 8 for conveying the toner in the toner accommodating portion 66 to the discharging portion 67 side.
- a toner conveying device pellet conveying device 8 for conveying the toner in the toner accommodating portion 66 to the discharging portion 67 side.
- reference numerals 77 and 78 are rollers
- reference numeral 81 is a delivery member
- reference numeral 83 is a belt member.
- the toner conveying device 8 includes a base member 80, a delivery member 81 and a pair of leg members 82 attached to the base member 80, and a belt member 83 as a moving unit that moves the base member 80. And a pair of guide rails 84 as guide members for guiding the base member 80. In FIG. 13, the front guide rail 84 is not shown.
- the base member 80 is divided into an upper part 80a and a lower part 80b, and the base member 80 is attached to the belt member 83 by sandwiching the belt member 83 between the upper part 80a and the lower part 80b.
- the belt member 83 is formed of an endless belt and is stretched by two rollers 77 and 78 (see FIG. 12) provided on the drawer tray 62.
- the belt member 83 is configured to be rotatable in both forward and reverse directions by transmitting a driving force to the one roller 77 from the transmission gear 74 (see FIG. 8).
- the base member 80 and the delivery member 81 and the leg member 82 attached to the base member 80 are integrally delivered in the delivery direction toward the discharge portion 67 side.
- a reciprocating movement is possible in Z1 and a return direction Z2 opposite to Z1.
- rollers 85 as rotating bodies that roll on the guide rail 84 are provided on both side surfaces of the base member 80.
- the pair of guide rails 84 are fixed to the drawer tray 62.
- the delivery member 81 and the leg member 82 are attached to each other through a horizontal support shaft 86 so as to be opened and closed.
- the delivery member 81 and the leg member 82 are configured to be rotatable independently of each other about the support shaft 86, and the delivery member 81 or the leg member 82 rotates about the support shaft 86.
- the delivery member 81 and the leg member 82 can be opened and closed with respect to each other.
- the delivery member 81 and the leg member 82 are urged in the opening direction by a torsion coil spring as an urging member (not shown).
- the delivery member 81 is formed with an accommodation recess 81a for accommodating the leg member 82 when the leg member 82 is closed.
- the switching of the rotation direction of the belt member 83 is performed by two switches 87 and 88 shown in FIG.
- the switches 87 and 88 as moving direction switching means are respectively disposed at the moving direction switching positions of the delivery member 81.
- one switch 87 is disposed at the end (the left end in the drawing) of the drawer tray 62 in the sending direction Z1
- the other switch 88 is the end of the return tray 62 in the return direction Z2. (The end on the right side of the figure).
- the base member 80 comes into contact with the switch 87 or 88 disposed at that position. That is, the base member 80 functions as an input means that contacts each switch 87, 88 and turns on.
- the moving direction of the delivery member 81 is switched to the delivery direction Z1 or the return direction Z2, so that the toner delivery operation can be performed continuously.
- a non-contact type sensor is provided in place of the contact type switch, and the detected part (input means) provided on the base member 80 or the like approaches the non-contact type sensor to turn on the sensor. You may make it do.
- FIG. 15 is a side view of the delivery member 81 and the leg member 82.
- the leg member 82 is in contact with the placement surface 62d of the drawer tray 62, and can reciprocate in the sending direction Z1 and the return direction Z2 along the placement surface 62d. . That is, the mounting surface 62d also has a function as a guide surface for guiding the leg member 82.
- the delivery member 81 and the leg member 82 are biased so as to open each other by the torsion coil spring, but the leg member 82 is disposed in a horizontal direction by contacting the mounting surface 62d. It is supported.
- the delivery member 81 is biased so as to rotate and open in the delivery direction Z1 (on the discharge portion 67 side) with respect to the leg member 82 supported in the horizontal direction.
- the portion restricts the rotation of the delivery member 81 in the opening direction against the urging force of the torsion coil spring.
- the delivery member 81 is supported so as to stand up with respect to the placement surface 62d (a state indicated by a solid line in the figure).
- the opening angle between the delivery member 81 and the leg member 82 is a predetermined angle so that the delivery member 81 is in a predetermined standing state with respect to the placement surface 62d by the placement surface 62d and the restricting portion. It is held at an angle ⁇ .
- the opening angle ⁇ is an angle when the delivery member 81 is not restricted by the restriction part. That is, the angle ⁇ indicates an opening angle when the torsion coil spring is in a natural state. As shown in FIG. 15, the opening angle ⁇ held by the torsion coil spring in the natural state is set within a range that is larger than the opening angle ⁇ at which the delivery member 81 is in a predetermined standing state and smaller than 180 °. ing.
- the leg members 82 can enter the both end sides in the direction (the sending direction Z1 and the returning direction Z2) in which the leg members 82 reciprocate on the placement surface 62d.
- Recesses 62i and 62j are provided. In the present embodiment, by providing these recesses 62i and 62j, the delivery member 81 can be switched between a standing state and a falling state with respect to the mounting surface 62d.
- FIG. 16 (a) shows a state before the delivery member 81 reaches the recess 62i on the end side in the delivery direction Z1.
- the opening angle formed by the delivery member 81 and the leg member 82 is held at a predetermined angle ⁇ by a restriction portion (not shown) and the placement surface 62d, and the delivery member 81 is predetermined with respect to the placement surface 62d. Is standing up.
- the leg member 82 receives a biasing force of a torsion coil spring (not shown) and opens downward, and the leg member 82 enters the recess 62i.
- the opening angle between the delivery member 81 and the leg member 82 is an angle ⁇ held in the natural state of the torsion coil spring.
- the base member 80 comes into contact with the switch 87 shown in FIG. 14, and the movement direction of the delivery member 81 is switched.
- the leg member 82 comes into contact with the edge (near the opening) of the recess 62i, and the tip of the leg member 82 is moved. It is lifted up.
- the opening angle is larger than the angle ⁇ , so that the biasing force by the torsion coil spring acts in the closing direction.
- the delivery member 81 receives a biasing force in the closing direction and falls on the placement surface 62d.
- the sending member 81 and the leg member 82 will be hold
- the opening angle formed by the delivery member 81 and the leg member 82 is an angle close to 180 °
- the delivery member 81 and the leg member 82 exert an urging force in a direction to close each other by a torsion coil spring.
- the rotation of the delivery member 81 and the leg member 82 is restricted by the placement surface 62d, the delivery member 81 and the leg member 82 are held in a state of being horizontally collapsed.
- the delivery member 81 and the leg member 82 are configured so as not to open 180 ° or more.
- FIG. 17A shows a state before the delivery member 81 that has been tilted as described above reaches the recess 62j on the end side in the return direction Z2.
- the opening angle formed by the delivery member 81 and the leg member 82 is an angle close to 180 °, and the delivery member 81 and the leg member 82 are mounted. It is held in a state of falling horizontally on the placement surface 62d.
- the leg member 82 when the leg member 82 reaches the position of the recess 62j, the mounting surface 62d for supporting the leg member 82 does not exist at this position. Upon receiving the urging force, the leg member 82 closes downward and the leg member 82 enters the recess 62j. Further, the opening angle between the delivery member 81 and the leg member 82 at this time is an angle ⁇ held in the natural state of the torsion coil spring. Since the delivery member 81 is configured so as not to enter the recess 62j, the delivery member 81 passes over the recess 62j.
- the base member 80 comes into contact with the switch 88 shown in FIG. 14, and the movement direction of the delivery member 81 is switched.
- the leg member 82 comes into contact with the edge (near the opening) of the recess 62j, and the tip of the leg member 82 is moved. It is lifted up.
- the opening angle is smaller than the angle ⁇ , so that the biasing force by the torsion coil spring acts in the opening direction.
- the delivery member 81 is raised by receiving a biasing force in the opening direction.
- the toner delivery operation (conveyance operation) of the toner conveyance device 8 will be described with reference to FIG.
- the toner cartridge 61 is mounted on the drawer tray 62, and the drawer tray 62 is housed in the apparatus main body. Therefore, in this state, the driving force can be transmitted from the driving device on the apparatus main body side to the belt member 83, and the sending member 81 can be reciprocated.
- FIG. 18A shows a state in which the remaining amount of the toner T in the toner container 66 is reduced to some extent.
- the delivery member 81 is in a standing state under the urging force of the torsion coil spring.
- the lower surface of the toner container 66 is pushed inward by the standing delivery member 81.
- the toner T inside is pushed by the delivery member 81 and is moved to the discharge portion 67 side.
- the toner T moved to the discharge unit 67 side is discharged downward from the discharge unit 67 by inertia force and gravity.
- the discharge portion 67 is provided with the inclined surface 67c (see FIG. 4D), the toner T is smoothly discharged by sliding on the inclined surface 67c.
- vibration applying means (not shown) that applies minute vibrations to the discharge portion 67 is provided. By applying a minute vibration to the discharge portion 67 by the vibration applying means, the discharge of the toner T from the discharge portion 67 is promoted and the adhesion of the toner T to the discharge portion 67 is prevented.
- the discharge unit 67 is vibrated with a frequency of 30 Hz and an amplitude of 0.3 mm.
- the frequency and amplitude vary depending on the type of toner used, but the range of good frequency and amplitude is a frequency of 10 to 100 Hz and an amplitude of 0.1 to 1 mm.
- the frequency is less than 10 Hz or when the amplitude is less than 0.1 mm, the effect of promoting the toner discharge and the effect of preventing the toner from adhering to the discharge unit 67 are reduced.
- the frequency is greater than 100 Hz, or if the amplitude is greater than 1 mm, the vibration becomes too large and the image forming apparatus main body may vibrate, which may affect image formation. Therefore, by setting the frequency and amplitude within the above ranges, it is possible to satisfactorily exert the effects of promoting toner discharge and preventing toner adhesion while suppressing the influence on image formation.
- FIG. 18B shows a state where the toner container 66 is filled with a large amount of toner T.
- the toner containing portion 66 is hardened due to the clogging of the toner T, and is heavy due to the weight of the toner T.
- the delivery member 81 is in a collapsed state, and the pushing amount of the delivery member 81 with respect to the toner accommodating portion 66 is reduced. Then, the delivery member 81 moves in the delivery direction Z1 while being in a collapsed state at a location where a large amount of toner T is present.
- the delivery member 81 reaches a position where the toner T near the discharge portion 67 is relatively small, as shown in FIG. 18C, the delivery member 81 is in an upright state so that the pushing amount of the delivery member 81 is increased. Will increase. As described above, the feeding member 81 stands up in the vicinity of the discharge portion 67 and the pushing amount increases, so that the toner T that is easy to move in the vicinity of the discharge portion 67 can be discharged sequentially.
- the push-in amount of the delivery member 81 is changed according to the amount of toner in the toner storage unit 66. Therefore, the toner in the toner storage unit 66 is changed. Regardless of the remaining amount, the toner can be stably and reliably sent to the discharge unit 67. Further, according to the configuration of the present embodiment, the toner can be conveyed with a small stress, and the aggregation and deterioration of the toner can be suppressed. Furthermore, since the present invention does not cause large vibrations or shocks, there is no possibility of occurrence of abnormal images due to vibrations.
- the pushing force of the delivery member 81 is appropriately set. It is possible to adjust to a different value. In that case, even if the urging force of the torsion coil spring is increased, in the embodiment of the present invention, the rotation of the delivery member 81 is restricted by a restriction portion (not shown), so the delivery member 81 is held in a predetermined standing state. can do.
- the moving direction of the delivery member 81 is switched to the delivery direction Z1 or the return direction Z2, so that the toner delivery operation is continuously performed. Can be done automatically.
- the sending member 81 when the sending member 81 is returned to the original position, the sending member 81 is switched to the tilted state, so that the toner can be prevented from being returned by the sending member 81 moving in the return direction Z2.
- the switching operation between the standing state and the collapsed state of the delivery member 81 can be realized by a simple mechanism that allows the leg member 82 to enter the recess 62i or 62j.
- the configuration can be simplified. Instead of the recesses 62i and 62j, a through hole can be used.
- the toner cartridge 61 has the discharge portion 67 provided at one end thereof fixed, and the hole 66b provided at the other end portion is separated from the discharge portion 67 side by the hook portion 62b. Since it is locked while being urged in the opposite direction, it is mounted on the drawer tray 62 in a state where an appropriate tension is applied. For this reason, even if the toner container 66 is pushed by the delivery member 81, the toner container 66 can be stably held at a predetermined position. As a result, the toner accommodating portion 66 is not deformed into an appropriate shape by the delivery operation of the delivery member 81, or the toner accommodating portion 66 as a whole moves against the pushing force by the delivery member 81, so that the toner is delivered.
- the toner cartridge 61 is provided with the ventilation portion 67i (see FIG. 4A or 4D), as shown in FIG.
- the air in the toner accommodating portion 66 is discharged to the outside through the vent portion 67i.
- an increase in internal pressure due to deformation of the toner container 66 can be prevented, and problems such as an excessive toner replenishment amount (discharge amount) and toner scattering in the developing device at the transport destination can be prevented. be able to.
- the toner cartridge 61 when the toner feeding operation is performed, the toner cartridge 61 is pushed toward the discharging portion 67 by the moving sending member 81, so that the hook portion 62b that locks the end of the toner cartridge 61 is also discharged. Pulled to the part 67 side. Thereafter, as shown in FIG. 20, when the delivery member 81 is returned, the toner cartridge 61 is pulled back in the opposite direction to the discharge portion 67 side by the torsion coil spring 62k (see FIG. 6A) attached to the hook portion 62b. It is.
- the toner accommodating portion 66 is expanded by the pull-back operation, whereby the toner is sucked into the air from the ventilation portion 67i, and the toner in the toner accommodating portion 66 is loosened by the sucked air.
- the toner can be loosened by the sucked air while the toner containing portion 66 is easily expanded and returned to the original shape by sucking the air through the ventilation portion 67i. Accordingly, it is possible to prevent problems such as packing in which the inner surfaces facing each other of the toner containing portion 66 are in close contact with each other and the toner cannot be discharged, and blocking that causes the toner to aggregate and block the conveyance path. As a result, it becomes possible to improve the toner transportability and realize stable toner transport.
- the hook portion 62b is once pulled to the discharge portion 67 side by the feeding operation and then pulled back by the urging force of the torsion coil spring 62k. Therefore, the hook portion 62b is fixed. As compared with the case where the toner is stored, the intake motion of the toner container 66 can be activated. As a result, the amount of intake air into the toner container 66 can be increased, and the toner loosening effect can be enhanced. In addition, since the hook portion 62b is attached via the torsion coil spring 62k, a sudden load increase on the toner cartridge 61 by the delivery member 81 during the delivery operation can be reduced, and the toner cartridge 61 can be worn out. It is possible to suppress.
- the end portion of the toner cartridge 61 by fixing the end portion of the toner cartridge 61 at substantially the same position by the hooking portion 62b, irregular deformation of the toner accommodating portion 66 accompanying the toner delivery operation can be suppressed, and toner conveyance failure And overloading the toner can be suppressed. Even when the hook portion 62b is attached without using an elastic member such as a torsion coil spring 62k, the end portion of the toner cartridge 61 can be fixed at substantially the same position. Irregular deformation can be suppressed to suppress toner conveyance failure and toner overload.
- the end portion of the toner containing portion 66 is not pulled back by the urging force of the elastic member, but the restorability of the toner containing portion 66 itself and toner By inflating due to weight or the like, a certain amount of air can be sucked from the ventilation portion 67i.
- the toner container 66 can be easily expanded and returned to its original shape, and the toner can be loosened by the sucked air, and the toner transportability can be improved and stabilized.
- the ventilation portion 67i is provided in the discharge portion 67, the exhaust in the vicinity of the discharge portion 67 is facilitated, and the ejection of toner can be highly prevented. That is, in the toner delivery direction by the delivery member 81, the ventilation portion 67i is provided on the downstream side of the toner inlet 66a, so that the air pushed out together with the toner can be effectively discharged, and toner scattering is suppressed. can do. Further, since the ventilation portion 67i is provided on the upper surface of the discharge portion 67, the ventilation portion can be prevented from being clogged with toner. Further, by providing the ventilation part 67i so as to face the discharge port 67b provided in the discharge part 67, it is possible to perform the exhaust more effectively.
- a ventilation portion 66 c may be provided in the toner storage portion 66.
- the ventilation portion 66c is preferably provided on the upper surface of the toner accommodating portion 66.
- the toner containing portion 66 is also possible to configure with a member having air permeability.
- the number of parts is reduced, and the same operation and effect as described above can be easily realized.
- clogging is less likely to occur than when a filter is partially provided, air permeability can be ensured over a long period of time.
- there is no problem such as deformation or breakage of the ventilation portion and peeling of the filter due to the deformation of the toner containing portion 66, the reliability is improved.
- the hole 66b is locked to the hook 62b.
- the toner transportability may be reduced.
- the container 200 is deformed into a shape as shown in FIG. That is, in this case, since the locked portion 300 is fixed at a position below the lower end of the opening 400, the bottom surface 210 of the container 200 moves from the opening 400 side to the locked portion 300 side when the toner amount decreases. Inclined downward toward In this way, particularly when the toner in the container 200 is low, the bottom surface 210 is inclined, and the toner carried to the opening 400 side returns due to the influence of gravity. As a result, the amount of toner sent out decreases, the conveyance speed (discharge speed) decreases, and the amount of toner remaining in the container eventually increases.
- the toner container 66 is reduced in volume as the internal toner is sent out. Specifically, the volume is reduced by deformation so that the upper surface 660 and the lower surface 661 of the toner storage portion 66 approach each other so that the state shown in FIG. 23A is changed to the state shown in FIG. .
- the toner container 66 automatically reduces the volume as the toner in the interior decreases, it is possible to grasp the toner remaining amount by appearance.
- the volume of the toner container 66 is automatically reduced, the convenience of the toner container 66 is eliminated because it is not necessary to crush the toner container 66 when the used toner container 66 is discarded.
- the entire toner container 66 is made of a deformable member, the used toner container 66 can be folded more compactly. Thereby, it is possible to reduce the environmental load at the time of collection, transportation, and reuse.
- the toner accommodating portion 66 may be configured by a member that can be deformed only partially if the volume can be reduced as the toner is discharged.
- the lower surface (bottom surface) 661 of the toner container 66 is inclined downward from the horizontal shape toward the opening 66a side from the hole 66b side which is the locked portion. Is arranged.
- the hole 66b of the toner containing portion 66 is located above the lower end of the opening 66a (the position indicated by the one-dot chain line U in FIG. 24). This is because it is disposed in the area.
- the position of the fixed hole 66b does not change, so the lower surface 661 of the toner container 66 extends from the upper hole 66b to the lower end of the lower opening 66a. It is arrange
- the lower surface 661 of the toner containing portion 66 is different from the opening 66a even if the toner in the toner containing portion 66 is reduced and the volume is reduced. Since the toner does not incline downward toward the opposite side, the toner carried to the opening 66a side can be prevented from returning due to the influence of gravity. As a result, it is possible to suppress a reduction in the toner conveyance amount due to the return of the toner from the opening 66a, and the toner conveyance amount can be stabilized. It is also possible to reduce the amount of toner that finally remains in the toner container 66.
- the volume of the toner accommodating portion 66 is promoted by the tension generated at this time, and the toner accommodating portion 66 is also promoted. The shape is stabilized. Thereby, the return of the toner can be more effectively suppressed.
- the position of the hole 66b may be the same height as the lower end of the opening 66a or higher.
- the hole 66b is disposed at a position higher than the lower end of the opening 66a, if the hook 62b that locks the hole 66b is below the lower end of the opening 66a, the hole 66b is hooked. In the state where the portion 62b is hooked, the hole 66b is disposed below the lower end of the opening 66a. Therefore, it is necessary to dispose the hook portion 62b at a position equal to or higher than the lower end of the opening portion 66a, similarly to the hole portion 66b.
- the toner containing portion 66 having the same configuration as that of the present embodiment is employed.
- the degree of inclination of the toner containing portion 66 with respect to the horizontal direction becomes large, it is difficult to arrange the toner containing portion 66 in a compact manner in the vertical direction. Therefore, in order to arrange the toner accommodating portion 66 in a compact manner in the vertical direction, the positions of the hook portion 62b and the hole portion 66b are preferably below the upper end of the opening portion 66a.
- the position of the opening 66a and the height of the delivery member 81 as follows, it is possible to further stabilize the toner conveyance amount and reduce the remaining toner amount. It becomes possible.
- the opening 66 a is disposed at the center in the vertical direction at the end of the toner containing portion 66.
- the opening 66a is disposed below the toner container 66, the amount of toner adhering to the inner surface above the opening 66a is increased due to the toner feeding operation by the sending member 81, and the remaining amount of toner is reduced. Become more.
- the opening 66a is disposed on the upper part of the toner accommodating portion 66, the position of the opening 66a becomes relatively high with respect to the height of the delivery member 81, so that the amount of toner delivered is reduced. .
- the opening 66a is disposed at the center in the vertical direction of the end of the toner accommodating portion 66, thereby further stabilizing the toner conveyance amount and reducing the remaining toner amount. Is possible.
- the opening 66 a is disposed at the center in the vertical direction at the end of the toner containing portion 66” means that the vertical center line H 1 of the opening 66 a shown in FIG. It is not limited to the case where it is disposed so as to be completely coincident with the vertical center line H2 of the main body portion, but may be located at a position where it substantially coincides (substantially in the vertical direction).
- the top F of the inner surface of the portion into which the toner containing portion 66 is pushed by the sending member 81 at this time is not less than the lower end of the opening 66a and the upper end. It is desirable to make it below (within the range indicated by the symbol V in FIG. 25). If the top F of the pushed-in portion is lower than the lower end of the opening 66a, the toner conveyance amount decreases. Conversely, if the top F of the pushed-in portion is higher than the upper end of the opening 66a, the toner feeding operation is performed. This is because the toner remaining on the inner surface above the opening 66a increases due to the toner.
- the top F of the inner surface of the pushed-in portion is configured to be not less than the lower end and not more than the upper end of the opening 66a, thereby further stabilizing the toner conveyance amount and remaining toner. The amount can be reduced.
- the top F of the inner surface of the pushed-in portion is not less than the lower end and not more than the upper end of the opening 66a as long as the delivery member 81 is at least in the vicinity of the opening 66a. Accordingly, as shown in FIG. 18B, when the delivery member 81 at the start of the delivery operation is tilted, even if the top F is at a position lower than the lower end of the opening 66a, it is shown in FIG. Thus, when the delivery member 81 reaches the vicinity of the opening 66a and stands up, the top F may be equal to or higher than the lower end of the opening 66a.
- the rotation operation of the fixed arm 71 and the slide shutter are interlocked with the drawer / accommodation operation (attachment / detachment operation to the fixing portion 63) of the drawer tray 62. Since the opening / closing operation 67d can be performed, the toner cartridge 61 can be fixed and released, and the discharge port can be easily opened / closed, resulting in excellent operability. Further, as the fixed arm 71 rotates, the spring member 72 exceeds the rotation fulcrum of the fixed arm 71, so that the spring member 72 urges the fixed arm 71 in the direction in which the fixed arm 71 rotates. The fixed arm 71 can be reliably held at the position after switching by the urging force.
- the toner storage unit 66 and the discharge unit 67 are integrated with each other so as to be attached to and detached from the drawer tray 62.
- the discharge unit 67 is connected to the drawer tray 62 (or the fixed unit). 63), and the toner container 66 may be detachably attached.
- the present invention has been described above. However, the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the scope of the present invention.
- the entire toner accommodating portion 66 is configured by a deformable member. However, only a portion where the feeding member 81 is pushed in may be configured by a deformable member.
- the toner container 66 may be formed of a transparent member, or may be formed of a translucent or opaque member. Further, the toner container 66 may be colored in the same color as the toner inside.
- the wear resistance of the bottom surface (contact surface with the delivery member 81) of the toner container 66 is increased, or the bottom surface is formed of a thin film having a small coefficient of friction formed by various methods such as PVD and CVD. By doing so, it is possible to suppress the abrasion of the bottom surface of the toner accommodating portion 66 due to the sliding contact of the delivery member 81.
- a mechanism for applying a lubricant to at least one of the delivery member 81 and the toner container 66 it is possible to reduce friction between them and suppress wear.
- a crease may be provided in the toner storage portion 66 in advance, and the toner storage portion 66 may be folded along the fold along with the feeding operation of the delivery member 81 when the amount of toner inside decreases.
- the volume of the toner container 66 can be reduced, the cost for discarding or collecting the used toner container 66 can be reduced. Further, since the toner container 66 is easily deformed, the toner can be easily discharged.
- portion of the toner containing portion 66 where the hole 66b is formed has a sufficient strength to prevent damage or deformation of the portion because a force is applied by being pulled by the hook portion 62b. desirable.
- a portion where the hole 66b is formed (hereinafter referred to as “hooked portion J”) is composed of two sheets constituting the upper and lower surfaces of the toner containing portion 66 in the drawing.
- the hooked portion J can be formed thick and the strength is improved. Specifically, when the thicknesses t1 and t2 of the upper and lower sheet materials S1 and S2 are 100 ⁇ m, the thickness tJ of the hooked portion J is 200 ⁇ m.
- the thicknesses t1J and t2J of the hooked portions J of the upper and lower sheet materials S1 and S2 are compared with the thicknesses t1 and t2 of other portions. It may be thicker. Specifically, in the upper and lower sheet materials S1 and S2 having thicknesses t1 and t2, the upper and lower sheet materials S1 and S2 are bonded to each other by increasing only the thicknesses t1J and t2J of the hooked portion J to 150 ⁇ m.
- the thickness tJ of the hooked portion J when configured can be set to 300 ⁇ m.
- Embodiment 2 The second embodiment will be described in detail with reference to FIGS. In the second embodiment, configurations that are not particularly described are the same as those in the first embodiment.
- a developer supply device in which a nozzle is inserted into a flexible container that contains toner, the toner is sucked out by the pump through the nozzle, and the toner is supplied to the developing device (Japanese Patent Laid-Open No. 2005-91879). No. publication).
- the volume of the flexible container is automatically reduced as the toner is sucked out by the pump.
- the container is crushed, so that the cost required for collecting, transporting, and reusing the used container can be reduced.
- the volume of the container is reduced according to the remaining amount of toner in the container, there is also an advantage that the remaining amount of toner can be seen in appearance.
- the method of discharging toner from a flexible container without using a pump cannot automatically reduce the volume of the container as the toner is discharged. For this reason, in order to reduce the volume of a used container, an operation of crushing the container has to be performed. In addition, the remaining amount of toner cannot be grasped by appearance.
- a powder container that automatically reduces in volume as the internal powder decreases without using a pump, and the powder container are provided. It is an object of the present invention to provide a toner cartridge used, a powder conveyance device including the powder container, and an image forming apparatus.
- FIG. 27 is a longitudinal sectional view of the toner containing portion 66
- FIG. 28 is a transverse sectional view of the toner containing portion 66.
- (a) shows a state in which the toner containing portion 66 is expanded
- (b) shows a state in which the toner containing portion 66 is folded.
- both side surfaces 662 of the toner container 66 are provided with folds E extending in the longitudinal direction.
- the fold line E is linearly formed over the entire region from one end where the opening 66a of the toner containing portion 66 is formed to the other end on the opposite side. Further, the fold line E is attached so that the side surface 662 of the toner containing portion 66 is folded inward.
- the upper surface 660, the lower surface 661, and the left and right side surfaces 662 of the toner accommodating portion 66 are made of separate sheet materials, and these four sheet materials are bonded together to form a bag-like toner.
- the accommodating part 66 is comprised. In this case, as shown in FIG. 28, four bonding margins F for bonding the sheet materials are required.
- the toner containing portion 66 by forming one sheet material into a bag shape. That is, one sheet material is bonded in a cylindrical shape, and the upper surface 660, the lower surface 661, and the left and right side surfaces 662 are formed by folding the four corners of the cross section. Furthermore, a crease E is made by making the central part of each side surface 662 into a valley fold. In this case, since the margin F of the sheet material is only one place, the margin F is less than that of the toner accommodating portion 66 shown in FIG. For this reason, the toner accommodating portion 66 shown in FIG. 29 has an advantage that the arrangement space of the toner accommodating portion 66 can be reduced by the amount of the bonding margin F. Further, since the toner filling space can be widened in the portion where there is no adhesion margin F, it is possible to effectively utilize the limited space in the image forming apparatus.
- the toner accommodating portion 66 shown in FIG. 28 has adhesive margins F at the four corners, the strength is improved as compared with the toner accommodating portion 66 shown in FIG. For this reason, there is an advantage that the rigidity of the entire toner container 66 is increased and the toner container 66 can be easily carried.
- the sheet materials are bonded to each other by hot welding, but the sheet materials may be bonded using an adhesive or a double-sided adhesive tape.
- the adhesion is improved by using LDPE for the innermost sheet layer.
- the entire toner container 66 is configured by a deformable member, and the used toner container 66 can be folded in a compact manner to reduce the environmental load during collection, transportation, and reuse. This is preferable. However, it is also possible to configure only a part of the toner container 66 with a deformable member.
- the toner cartridge 61 is mounted on the drawer tray 62 by locking the hole 66b as the locked portion to the hook portion 62b.
- a pulling force acts in the longitudinal direction of the toner containing portion 66 by the hooking portion 62b. That is, a pulling force acts in the direction in which the fold line E extends, and the pulling force generates a force that folds inward along the fold line E in the toner accommodating portion 66. For this reason, when the toner in the toner containing portion 66 decreases, the toner containing portion 66 is folded along the fold line E, and the volume is reduced by deforming so that the upper surface and the lower surface of the toner containing portion 66 approach each other. Go. When the toner in the toner container 66 is almost exhausted, as shown in FIG. 27B, the toner container 66 is flattened.
- the toner storage unit 66 is folded and automatically reduced in volume as the toner is consumed without using a pump. be able to. Further, when toner in the toner container 66 is almost exhausted, the toner container 66 is folded and crushed, so that there is no need to crush the toner container 66 when the used toner container 66 is discarded. This improves convenience.
- the toner containing portion It becomes easy to control the folding posture of 66. For this reason, the powder discharging property (toner conveying action) accompanying the deformation of the toner containing portion 66 can be stabilized, which is advantageous for the toner replenishing operation.
- the toner storage portion 66 is folded inward at the position of the fold line E, when the toner storage portion 66 is folded, the toner storage portion 66 is placed around it. There is no contact with the arranged member and no damage or no abnormal noise is generated by the contact. Further, since the toner container 66 does not come into contact with surrounding members, there is a risk that the volume reduction due to the inhibition of the folding deformation of the toner container 66 and the toner discharge performance may be lowered. Absent.
- the hole 66b hooked to the hook 62b is arranged on the same straight line as the fold line E. As described above, by arranging the hole 66b, the toner storage portion 66 is easily folded along the fold line E, and when the toner in the toner storage portion 66 is almost exhausted, the toner storage portion 66 is thinner. It will be folded.
- the hole 66b as the locked portion is formed directly at the end of the toner accommodating portion 66.
- the hole 40a as the locked portion is formed in the toner. You may provide in the to-be-latched member 40 separate from the accommodating part 66. FIG.
- the locked member 40 having a hole 40a formed (through) is attached to the end of the toner containing portion 66. Specifically, a part of the locked member 40 is inserted into the toner container 66 from the end thereof, and the inserted part is attached to the inner surface of the toner container 66 by bonding.
- the hole 40a is formed in a portion exposed from the toner accommodating portion 66 of the member 40 to be locked, and a locking portion such as the hooking portion 62b is inserted into the hole 40a to be locked. ing.
- the hole 40a can be formed in the shape of a bottomed hole or a recess as long as it can lock the locking portion of the mating member.
- the locked member 40 may be attached by adhering to the outer surface of the end portion of the toner containing portion 66.
- the hole 40a formed in the to-be-latched member 40 is made into the bottomed hole or the recessed part, it can also be made into a through-hole.
- the locked member 40 may be attached by sandwiching the end portion of the toner containing portion 66.
- the locked member 40 has a pair of clamping parts 41 and 42 that are integrally connected to each other via a flexible bending part 45. . Holes 41a and 42a as locked portions are formed (penetrated) in the holding portions 41 and 42, respectively. Further, two holding portions 43 are formed in one holding portion 41, and two fitting holes 44 that can be fitted to the protruding portions 43 are formed (penetrated) in the other holding portion 42. Yes. Further, two attachment holes 66d for attaching the locked member 40 are formed (through) at the end of the toner containing portion 66.
- the bent portion 45 is bent and the end portion of the toner accommodating portion 66 is fixed by a pair of clamping portions 41 and 42. Pinch.
- the convex portion 43 passes through the mounting hole 66d, and the convex portion 43 is inserted and fitted into the fitting hole 44, thereby fixing the pair of sandwiching portions 41 and 42 so as not to expand. .
- the locked member 40 is attached to the end of the toner accommodating portion 66.
- FIG. 32 it is also possible to comprise a pair of clamping parts 41 and 42 separately from each other without being connected to each other. Moreover, you may form the through-hole as a to-be-latched part, a bottomed hole, or a recessed part only in any one of a pair of clamping parts 41 and 42.
- FIG. 33 another embodiment is shown in FIG.
- the other end portion of the toner accommodating portion 66 is attached by pressing with the pair of clamping portions 41 and 42 of the locked member 40.
- the hole part, recessed part, etc. as a to-be-latched part are not formed.
- the stepped portion H formed at the boundary between the end portions of the locked member 40 and the toner containing portion 66 is used as the locked portion. That is, it is configured to be locked by hooking the locking portion of the mating member to the stepped portion H.
- the shape of the locked member 40 can be selected from a cylindrical shape as shown in FIG. 33A, a quadrangular prism shape as shown in FIG. 33B, and other various shapes.
- the locked portion when the locked portion is provided in the locked member 40 that is separate from the toner accommodating portion 66, the locked portion can be inserted into the through-hole only by changing the shape of the locked member 40. It is possible to easily change to various shapes such as a bottomed hole, a concave portion or a stepped portion.
- the toner container 66 can be identified. In this case, since the shape of each toner container 66 can be made common, the identification of the toner container 66 can be realized at low cost.
- the shape of the locked member 40 may be different for each color of toner stored in the toner storage unit 66. Further, by changing the shape of the locking portion on the counterpart member side corresponding to the different shape of the locked member 40, the function of preventing incompatibility or erroneous mounting of the toner cartridge can be exhibited.
- the locked member 40 When the locked member 40 is bonded (welded) to the toner accommodating portion 66, a part of the locked member 40 is inserted into the toner accommodating portion 66 as in the embodiment shown in FIG. Can be welded efficiently. However, in this case, it is necessary to weld the locked member 40 to the toner accommodating portion 66 before filling the toner accommodating portion 66 with the toner. May adhere or the locked member 40 may be damaged. In this regard, the configuration in which the locked member 40 as shown in FIGS. 31, 32, and 33 is attached without being inserted into the toner accommodating portion 66 is obtained after the toner accommodating portion 66 is filled with toner and sealed. Thus, the locked member 40 can be attached.
- these configurations can prevent the toner from adhering to the locked member 40 and damage to the locked member 40, cleaning the adhered toner, replacing the damaged locked member 40, and the like. There is an advantage that the cost can be reduced. Furthermore, as shown in FIG. 32 and FIG. 33, the configuration in which the end portion of the toner containing portion 66 is sandwiched by the locked member 40 eliminates the need for the step of applying an adhesive and the step of attaching, so that the mounting work is not necessary. There is an advantage that becomes easy.
- the powder container is folded and automatically reduced in volume as the internal powder decreases without using a pump.
- the amount can be grasped.
- the powder container is folded and crushed, so there is no need to crush the powder container when disposing of the used powder container. This improves convenience.
- Embodiment 3 The third embodiment will be described in detail with reference to FIGS. 34 to 38.
- FIGS. 34 to 38 the specific configuration of the vibration applying means and the fixing portion provided with the vibration applying means will be described.
- FIG. 34 is a cross-sectional view of the fixing portion 63
- FIG. 35 is a perspective view of the vibration applying means
- FIGS. 36 and 37 are perspective views of the fixing portion.
- the fixed portion 63 is provided with an eccentric weight 93 attached to the rotating shaft as vibration applying means.
- the eccentric weight 93 is a cylindrical member protruding on both sides in the axial direction, and an insertion hole 93a for inserting the rotating shaft is formed at a position shifted from the center thereof.
- a driving force is applied to the rotating shaft from driving means 94 (see FIG. 34) provided on the fixed portion 63, and the eccentric weight 93 rotates together with the rotating shaft to generate vibration.
- the eccentric amount (deviation amount from the rotation center) of the eccentric weight 93 is set to be 1 mm or less, and the generated vibration is very minute.
- both ends of the rotation shaft are supported by rectangular support members 95, and each support member 95 rotates together with the rotation shaft.
- the main body portion 70 of the fixing portion 63 is in a horizontal direction (in the direction of arrow V in the figure) with respect to the base portion 96 fixed to the apparatus main body via a swing support portion 97. ) Is swingably attached.
- the swing support part 97 is configured by a horizontal long hole 97a formed on both side surfaces of the base part 96 and a bolt 97b inserted through the long hole 97a.
- One end of the main body 70 is attached to the base 96 by a bolt 97b inserted into the base 96.
- the main body 70 is configured to be swingable, so that the main body 70 is effectively vibrated.
- the eccentric weight 93 is provided on the end side away from the end provided with the swing support portion 97.
- FIG. 38 is a cross-sectional view of the toner cartridge 61 fixed to the fixing portion 63.
- the main body 70 of the fixing portion 63 communicates with the discharge port 67b of the discharge portion 67 and the inlet portion 64a of the toner conveyance path (powder conveyance path) of the sub hopper 64. Is formed.
- a first seal member 91 for preventing toner leakage is disposed at a connection portion between the communication path 70b and the discharge port 67b, and a connection portion between the communication path 70b and the inlet portion 64a of the sub hopper 64 includes A second seal member 92 for preventing toner leakage is provided.
- the second seal member 92 is composed of an elastic body formed thicker than the first seal member 91.
- the elastic material include low-resilience urethane foam.
- the fixed portion 63 is provided with an eccentric weight 93 as vibration generating means (see FIG. 34), by rotating the eccentric weight 93 to generate vibration, Vibration can be applied to the fixed discharge portion 67. Thereby, it is possible to promote the discharge of the toner from the discharge unit 67. Further, even when the toner is cross-linked and stops moving in the discharge unit 67, the cross-linked toner can be broken by applying vibration to the discharge unit 67, so that the stagnation of the toner can be prevented. it can. As described above, according to the present embodiment, toner can be reliably discharged from the discharge portion 67, so that stable toner conveyance can be realized and a highly reliable apparatus can be provided. .
- the vibrations to be generated are very minute, so that the functions of the image forming unit and other devices are hardly affected, and there are no problems such as abnormal images. Further, in this embodiment, since the configuration that generates vibration by rotating the eccentric weight 93 is adopted, noise and extra vibration are minimized as compared with the configuration that generates vibration by collision between members. It is possible to suppress.
- the fixing portion 63 and the sub hopper 64 are connected to each other through a second seal member 92 formed of an elastic body so as to be separated from each other (in a non-contact state) (see FIG. 38).
- the imparted vibration can be prevented from being transmitted to the sub hopper 64.
- the drawer tray 62 is in non-contact with the discharge portion 67 in a state where the discharge portion 67 is fixed to the fixed portion 63 (see the same figure), so that vibration is transmitted from the discharge portion 67 to the drawer tray 62. Can be prevented. In this way, by preventing the vibration from being transmitted to other members other than the discharge portion 67, it is possible to highly prevent the occurrence of abnormal noise due to the vibration.
- FIG. 39 is a schematic diagram showing the configuration of another embodiment of the vibration applying means.
- the vibration applying means shown in FIG. 39 has an eccentric cam 98 that rotates eccentrically about the rotation axis.
- the eccentric cam 98 is rotatably attached to the cam support member 42 fixed to the base portion 96 via a bearing (not shown).
- the main body portion 70 of the fixed portion 63 is provided with a cam abutting portion 43 with which the circumferential surface of the eccentric cam 98 abuts.
- the main body portion 70 and the cam support member 42 are connected by a plurality of spring members 44, and the main body portion 70 is biased toward the eccentric cam 98 by the biasing force of these spring members 44, and the cam contact portion 43 is moved. It is in contact with the eccentric cam 98.
- the eccentric cam 98 rotates in response to a driving force from a driving means (not shown)
- the main body 70 swings in the direction of the arrow V in the figure with respect to the rotation so that vibration is generated. It has become
- FIG. 40 is a schematic diagram showing the configuration of still another embodiment of the vibration applying means.
- a linear motor 99 is used as the vibration applying means, and the main body portion 70 is attached to the base portion 96 via the linear motor 99.
- the fixed body of the linear motor 99 is fixed to the base portion 96, and the movable body capable of reciprocating with respect to the fixed body is fixed to the main body portion 70.
- the vibration can be generated by swinging in the V direction.
- the powder can be reliably discharged from the discharge unit, stable powder conveyance can be realized and a highly reliable apparatus can be provided.
- Embodiment 4 The fourth embodiment will be described in detail with reference to FIGS. 41 to 47.
- FIG. In the fourth embodiment configurations that are not particularly described are the same as those in the first embodiment.
- the toner delivery operation (conveyance operation) of the toner conveyance device 8 according to the fourth embodiment will be described with reference to FIG.
- the toner cartridge 61 is mounted on the drawer tray 62, and the drawer tray 62 is housed in the apparatus main body. Therefore, in this state, the driving force can be transmitted from the driving device on the apparatus main body side to the belt member 83, and the sending member 81 can be reciprocated.
- the delivery member 81 moves in a state where the bottom surface of the toner accommodating portion 66 is pushed inward. Then, the toner T in the toner storage unit 66 is moved to the discharge unit 67 side. Then, as shown in FIG. 41B, the toner T moved to the discharge unit 67 side is sent from the discharge unit 67 to the lower sub hopper 64 by inertia force and gravity.
- FIG. 42 is a diagram showing a state in which the toner T is sent out when the remaining amount of the toner T in the toner storage unit 66 is reduced.
- FIG. 42A when the remaining amount of toner decreases to a medium level, the amount of toner delivered to the discharge unit 67 is smaller than when the remaining amount of toner shown in FIG.
- FIG. 42B when the remaining amount of toner is further reduced, the amount of toner delivered is further reduced.
- the amount of toner delivered to the discharge unit 67 also decreases.
- the amount of toner remaining in the toner container 66 is 200 g or more, the amount of toner delivered by one delivery operation is 10 g or more, but when the amount of toner remaining is 100 to 200 g, the amount of toner remaining is about 5 g. Is less than 3 g.
- the fourth embodiment is configured as follows in order to realize stable toner conveyance regardless of the remaining amount of toner in the toner storage unit 66.
- FIG. 43 is an enlarged cross-sectional view of the discharge part 67 and its peripheral part.
- the discharge unit 67 is provided with a toner sensor 120 as toner detection means (powder detection means) for detecting internal toner.
- the toner sensor 120 is a piezoelectric sensor that has a piezoelectric element and detects the powder by measuring the contact pressure of the toner to the piezoelectric element.
- the toner sensor 120 may be an optical sensor.
- the optical sensor includes a light emitting unit 120 a that emits light and a light receiving unit 120 b that receives light, and the light emitting unit 120 a and the light receiving unit 120 b are connected to the discharge unit 67. It arrange
- light guide paths 121 and 122 through which light passes are formed between the light emitting section 120a and the light receiving section 120b.
- a space in which toner can intervene is provided between the light guide paths 121 and 122, and the toner is detected by interposing the toner in this space and blocking the optical path from the light emitting unit 120a to the light receiving unit 120b.
- a scraping member 123 that scrapes off the toner is configured to pass between the light guide paths 121 and 122.
- the scraping member 123 is attached to the rotating shaft 124, and the scraping member 123 passes between the light guide paths 121 and 122 when the rotating shaft 124 rotates.
- the toner is prevented from staying between the light guide paths 121 and 122, and the toner detection accuracy is improved.
- a scraping member for scraping off the toner is provided so that the toner can be detected accurately.
- the sub hopper 64 is provided with a toner sensor 140 as another toner detection means (powder detection means) for detecting the internal toner.
- a toner sensor 140 as another toner detection means (powder detection means) for detecting the internal toner.
- the toner sensor 120 provided in the discharge unit 67 is referred to as a first toner sensor
- the toner sensor 140 provided in the sub hopper 64 is referred to as a second toner sensor.
- the second toner sensor 140 similarly to the first toner sensor 120, a piezoelectric sensor, an optical sensor, or the like can be used.
- the toner amount can be directly detected by measuring the contact pressure of the toner, so that the detection accuracy is improved and the appropriate toner amount is discharged. It can be sent out to the part 67.
- the optical sensor when the optical sensor is used, the light emitting portion 120a and the light receiving portion 120b shown in FIG. 44 are arranged outside the discharge portion 67 so as not to contact the discharge portion 67, so that the discharge portion 67 is vibrated. Even if it occurs, the light emitting unit 120a and the light receiving unit 120b are not affected by vibration.
- the first toner sensor 120 and the second toner sensor 140 a reflection type optical sensor that measures light reflectance, a magnetic sensor that measures magnetic permeability, and the like can also be used.
- FIG. 45 is a block diagram showing a control system of the delivery member.
- the delivery member 81 is configured such that its operation is controlled by the control means 160 that receives the detection signal of the first toner sensor 120 or the second toner sensor 140.
- the control unit 160 controls the driving device of the belt member 83 provided with the delivery member 81 so that the movement start, stoppage, number of movements and movement speed of the delivery member 81 in the delivery direction can be controlled. is doing.
- the control method of the delivery member will be described with reference to the flowchart of FIG.
- the toner in the sub hopper 64 being supplied to the developing device and the amount of toner in the discharge unit 67 being reduced, the toner is no longer detected by the first toner sensor 120 (the toner in the discharge unit 67 is placed).
- the control unit 160 issues a delivery instruction to send the toner to the discharge unit 67.
- the delivery member 81 is moved to the discharge part 67 side to perform the delivery operation (STEP 1).
- the toner is sent to the discharge unit 67 by the sending member 81 and the first toner sensor 120 detects that the toner is present by performing this sending operation (“YES” in STEP 2), the sending operation is performed. Exit.
- the delivery member 81 is moved again to perform the delivery operation (STEP 3). If the first toner sensor 120 detects that the toner is present as a result of the sending operation (“YES” in STEP 4), the sending operation is terminated. However, if the first toner sensor 120 still detects that there is no toner (“NO” in STEP 4), the moving speed of the sending member 81 is increased to perform the sending operation (STEP 5).
- the delivery operation is terminated, and if it is detected that there is no toner. (“NO” in STEP 6), the sending operation is performed again with the moving speed increased (STEP 7). Thereafter, the sending operation is repeated a predetermined number of times until the first toner sensor 120 detects the presence of toner (STEPs 7 to 9).
- the feeding speed is further increased to perform the sending operation (STEP 5).
- the sending operation is repeated a predetermined number of times until the first toner sensor 120 detects that the toner is present (STEPs 7 to 9).
- the sending operation is performed at an increased speed (STEP 9, 10 and STEP 5 to 8).
- vibration applying means for applying vibration to the discharge unit 67 is provided in the fixing unit 63. That is, if toner adheres to the inner surface of the discharge portion 67 around the first toner sensor 120, the first toner sensor 120 may be erroneously detected. The toner is prevented from adhering to the toner so that the first toner sensor 120 does not detect it erroneously.
- the first toner sensor 120 confirms the presence or absence of toner, and until the presence of toner is detected (discharge unit 67). Since the sending operation is repeated (until it is detected that the toner in the toner container reaches a predetermined amount or more), the discharge portion 67 has a predetermined amount or more regardless of whether the toner remaining amount in the toner container 66 is large or small. Toner can be supplied. That is, even if a predetermined amount of toner cannot be sent to the discharge unit 67 in one delivery operation due to a small amount of toner remaining in the toner storage unit 66, a predetermined amount of toner can be obtained by repeating the delivery operation. The toner can be sent to the discharge unit 67. As described above, according to the present embodiment, it is possible to stably and reliably carry the toner regardless of the remaining amount of toner in the toner storage unit 66.
- the moving speed of the delivery member 81 is increased at a predetermined timing.
- the operation time increases accordingly, but by increasing the moving speed, the time required for one sending operation can be shortened, and the extension of the operation time can be reduced. It becomes possible.
- the movement speed is increased in order to increase the number of movements (number of transmissions) of the delivery member 81 within a predetermined time.
- the toner since the vibration is applied to the discharge portion 67 by the vibration applying means, the toner can be prevented from adhering to the inner surface of the discharge portion 67 or has been attached by vibration. Toner can be removed. This can prevent erroneous detection of the first toner sensor 120 due to toner adhering.
- the vibration applying means is provided as in the present embodiment, the first toner sensor 120 is configured by an optical sensor, and the light emitting unit 120a and the light receiving unit 120b are disposed outside the discharge unit 67 and on the discharge unit 67. It is preferable to arrange so as not to contact. Thereby, even if vibration occurs in the discharge portion 67, the first toner sensor 120 can be prevented from being erroneously detected by vibration.
- the sending operation is repeatedly performed based on the detection result of the first toner sensor 120, and as a result, the number of times of sending is controlled according to the remaining amount of toner in the toner container 66.
- the number of movements the number of transmissions
- the movement speed of the delivery member 81 within a predetermined time may be changed according to the remaining amount of toner.
- the remaining amount of toner in the toner storage unit 66 As a method of grasping the remaining amount of toner in the toner storage unit 66, a sensor for detecting the amount of toner in the toner storage unit 66 is provided, or the remaining amount of toner in the toner storage unit 66 is calculated from the toner consumption of the output image. There are ways to do it. Alternatively, the remaining amount of toner can be estimated by calculating the amount of toner sent out from the number of sending operations. Then, the number of movements and the movement speed of the delivery member 81 are set in advance according to the remaining amount of toner, and when there is a delivery instruction, the number of movements and the movement speed of the delivery member 81 according to the grasped remaining amount of toner. To decide.
- FIG. 47 shows an example in which the moving speed of the delivery member 81 is set based on the remaining amount of toner.
- the horizontal axis indicates the amount of toner remaining in the toner storage unit 66
- the vertical axis indicates the toner conveyance amount in one delivery operation in each case.
- the remaining amount of toner is divided into four ranges, and the moving speed of the delivery member 81 when the remaining amount of toner is in each range is set.
- the moving speed is 100 mm / s
- the moving speed is 200 mm / s
- the moving speed is 200 mm / s
- the toner remaining amount is 70 g or more and less than 110 g.
- the moving speed is set to 350 mm / s.
- the present invention is not limited to each of the above-described embodiments, and within the scope of the technical idea of the present invention, each of the above-described embodiments can be modified as appropriate in addition to those suggested in each of the above-described embodiments. Is clear.
- the number, position, shape, and the like of the constituent members are not limited to the above embodiments, and can be set to a number, position, shape, and the like that are suitable for carrying out the present invention.
- the powder conveying apparatus according to the present invention is not limited to the printer shown in FIG. 1, but can be mounted on other printers, copiers, facsimiles, or complex machines thereof.
- the toner is mainly formed of a resin component, a pigment component, a wax component and an external additive.
- polystyrene resin epoxy resin, polyester resin, polyamide resin, styrene acrylic resin, styrene methacrylate resin, polyurethane resin, vinyl resin, polyolefin resin, styrene butadiene resin, phenol resin, polyethylene resin, silicon resin, butyral resin, terpene
- resins polyol resins and the like.
- vinyl resins include styrene such as polystyrene, poly-p-chlorostyrene, and polyvinyltoluene, and homopolymers thereof: styrene-p-chlorostyrene copolymer, styrene-propylene copolymer, styrene-vinyltoluene copolymer.
- polymer Polymer, styrene-vinylnaphthalene copolymer, styrene-methyl acrylate copolymer, styrene-ethyl acrylate copolymer, styrene-butyl acrylate copolymer, styrene-octyl acrylate copolymer, styrene-methacrylic copolymer Methyl acid copolymer, styrene-ethyl methacrylate copolymer, styrene-butyl methacrylate copolymer, styrene- ⁇ -chloromethyl methacrylate copolymer, styrene-acrylonitrile copolymer, styrene-vinyl methyl ether copolymer Combined, styrene-vinyl ethyl acetate Copolymer, styrene-vinyl
- the polyester resin is composed of a dihydric alcohol as shown in the following group A and a dibasic acid salt as shown in the group B, and further a trihydric or higher alcohol as shown in the group C or Carboxylic acid may be added as a third component.
- Group A ethylene glycol, triethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,4 butanediol, neopentyl glycol, 1,4 butenediol, 1,4-bis (hydroxymethyl) cyclohexane Bisphenol A, hydrogenated bisphenol A, polyoxyethylenated bisphenol A, polyoxypropylene (2,2) -2,2′-bis (4-hydroxyphenyl) propane, polyoxypropylene (3,3) -2, 2-bis (4-hydroxyphenyl) propane, polyoxyethylene (2,0) -2,2-bis (4-hydroxyphenyl) propane, polyoxypropylene (2,0) -2,2′-bis (4 -Hydroxyphenyl) propane and the like.
- Group B maleic acid, fumaric acid, mesaconic acid, citraconic acid, itaconic acid, glutaconic acid, phthalic acid, isophthalic acid, terephthalic acid, cyclohexanedicarboxylic acid, succinic acid, adipic acid, sebacic acid, malonic acid, linolenic acid, or These acid anhydrides or esters of lower alcohols.
- Group C Trivalent or higher alcohols such as glycerin, trimethylolpropane and pentaerythritol, and trivalent or higher carboxylic acids such as trimellitic acid and pyromellitic acid.
- the polyol resin an alkylene oxide adduct of an epoxy resin and a dihydric phenol, or a compound having one active hydrogen in the molecule that reacts with the glycidyl ether and the epoxy group, and an active hydrogen that reacts with the epoxy resin in the molecule. There are those obtained by reacting two or more compounds.
- black pigments examples include azine dyes such as carbon black, oil furnace black, channel black, lamp black, acetylene black, and aniline black, metal salt azo dyes, metal oxides, and composite metal oxides.
- yellow pigments examples include cadmium yellow, mineral fast yellow, nickel yellow, navel yellow, naphthol yellow S, hansa yellow G, hansa yellow 10G, benzidine yellow GR, quinoline yellow lake, permanent yellow NCG, and tartrazine lake. .
- examples of the orange pigment include molybdenum orange, permanent orange GTR, pyrazolone orange, Vulcan orange, indanthrene brilliant orange RK, benzidine orange G, and indanthrene brilliant orange GK.
- red pigments examples include Bengala, Cadmium Red, Permanent Red 4R, Resol Red, Pyrazolone Red, Watching Red Calcium Salt, Lake Red D, Brilliant Carmine 6B, Eosin Lake, Rhodamine Lake B, Alizarin Lake, Brilliant Carmine 3B.
- purple pigments examples include Fast Violet B and Methyl Violet Lake.
- blue pigments include cobalt blue, alkali blue, Victoria blue lake, phthalocyanine blue, metal-free phthalocyanine blue, phthalocyanine blue partially chlorinated, first sky blue, and indanthrene blue BC.
- Green pigments include chrome green, chromium oxide, pigment green B, and malachite green lake.
- a charge control agent is blended (internally added) inside the toner particles.
- the charge control agent makes it possible to control the optimum charge amount according to the development system.
- the balance between the particle size distribution and the charge amount can be further stabilized.
- nigrosine and quaternary ammonium salts, triphenylmethane dyes, imidazole metal complexes and salts can be used alone or in combination of two or more.
- salicylic acid metal complexes, salts, organic boron salts, calixarene compounds, and the like are used for controlling the toner to be negatively charged.
- a release agent can be internally added to the toner in the present invention to prevent offset at the time of fixing.
- Release agents include natural waxes such as candelilla wax, carnauba wax, rice wax, montan wax and derivatives thereof, paraffin wax and derivatives thereof, polyolefin wax and derivatives thereof, sazol wax, low molecular weight polyethylene, and low molecular weight polypropylene. And alkyl phosphate esters.
- the melting point of these release agents is preferably 65 to 90 [° C.]. If it is lower than this range, blocking during storage of the toner tends to occur, and if it is higher than this range, offset tends to occur in a region where the fixing temperature is low.
- Additives may be added for the purpose of improving the dispersibility of a release agent or the like.
- styrene acrylic resin polyethylene resin, polystyrene resin, epoxy resin, polyester resin, polyamide resin, styrene methacrylate resin, polyurethane resin, vinyl resin, polyolefin resin, styrene butadiene resin, phenol resin, butyral resin, terpene resin,
- styrene acrylic resin polyethylene resin, polystyrene resin, epoxy resin, polyester resin, polyamide resin, styrene methacrylate resin, polyurethane resin, vinyl resin, polyolefin resin, styrene butadiene resin, phenol resin, butyral resin, terpene resin,
- a polyol resin or the like and a mixture of two or more of these resins may be used.
- Resin may be crystalline polyester. It is an aliphatic polyester having crystallinity, having a sharp molecular weight distribution, and increasing the absolute amount of its low molecular weight as much as possible. This resin undergoes a crystal transition at the glass transition temperature (Tg), and at the same time, the melt viscosity suddenly decreases from the solid state and exhibits a fixing function to paper.
- Tg glass transition temperature
- the crystalline polyester resin low-temperature fixing can be achieved without excessively reducing the Tg and molecular weight of the resin. Therefore, there is no decrease in storage stability associated with a decrease in Tg. Also, there is no excessively high gloss and offset resistance deterioration due to the low molecular weight. Therefore, the introduction of the crystalline polyester resin is very effective for improving the low-temperature fixability of the toner.
- an inorganic fine powder may be adhered or fixed to the toner surface as a fluidity improver.
- the average particle size of the inorganic fine powder is suitably 10 to 200 [nm]. When the particle size is smaller than 10 [nm], it is difficult to create an uneven surface having an effect on fluidity, and when the particle size is larger than 200 [nm], the powder shape becomes rough, which is a problem of toner shape. Occurs.
- the inorganic fine powder of the present invention Si, Ti, Al, Mg, Ca, Sr, Ba, In, Ga, Ni, Mn, W, Fe, Co, Zn, Cr, Mo, Cu, Ag, V, Zr, etc.
- fine particles of silicon oxide (silica), titanium oxide, and aluminum oxide (alumina, corundum) are preferably used.
- it is effective to perform a surface modification treatment of the additive with a hydrophobizing agent or the like.
- a typical example of the hydrophobizing agent is a silane coupling agent, which includes the following.
- the inorganic fine powder is preferably used in an amount of 0.1 to 2% by weight based on the toner. If it is less than 0.1 [wt%], the effect of improving toner aggregation is poor, and if it exceeds 2 [wt%], there are problems such as toner scattering between fine wires, contamination in the machine, scratches and abrasion of the photoreceptor. It tends to occur.
- a charge control agent may be adhered or fixed to the surface of the powder composed of at least a resin or a pigment so that the powder surface shape has a small period and a large period.
- the average particle size is optimally as small as 5 to 200 [nm].
- the toner of the present invention may further contain other additives within a range that does not have a substantial adverse effect, such as Teflon (registered trademark) powder which is an organic powder, metal soap powder such as zinc stearate powder, polyfluoride Lubricant powder such as vinylidene powder, or abrasive such as cerium oxide powder, silicon carbide powder, strontium titanate powder, or conductive particles such as carbon black powder, zinc oxide powder, tin oxide powder, indium oxide powder and insulating properties
- Teflon (registered trademark) powder which is an organic powder
- metal soap powder such as zinc stearate powder
- polyfluoride Lubricant powder such as vinylidene powder
- abrasive such as cerium oxide powder, silicon carbide powder, strontium titanate powder
- conductive particles such as carbon black powder, zinc oxide powder, tin oxide powder, indium oxide powder and insulating properties
- a small amount of a conductivity-imparting agent such as a powder obtained by coating
- the toner Since the fine powder is added to the toner, the toner is easily loosened when the delivery member 81 is operated, and the toner is removed from the container even when there is no replenishment operation for a while and the fluidity of the toner is lowered. Can be discharged.
- the first, second, third, and fourth embodiments include the inventions of the following powder container, powder conveyance device, and image forming apparatus (first to eighth inventions).
- 1st invention has the powder accommodating part formed in the opening part in the one end part, the powder accommodating inside, and being deformable with a flexible material,
- the outer side of the said powder accommodating part A powder container configured to push out a feeding member from the opening and move it to the opening to feed powder out of the opening, opposite to the one end where the opening is formed
- the other end of the opening is provided with a locked portion for locking the locking portion of the mating member, and the locked portion is not less than the lower end of the opening in the installation posture when the powder container is used. It is comprised so that it may be arrange
- the lower surface (or bottom surface) of the powder container from the locked portion side It is arranged to be inclined horizontally or downward toward the opening side. That is, even if the powder in the powder container is reduced, the position of the locked portion to be fixed does not change, so the lower surface of the powder container is disposed below the position of the locked portion. It arrange
- the opening is disposed at the center in the vertical direction of one end of the powder container.
- the opening is disposed in the lower part of the powder container, the amount of powder adhering to the inner surface above the opening increases due to the powder delivery operation by the delivery member, and the amount of powder remaining increases. End up.
- the position of the opening is relatively higher than the height of the delivery member, so that the amount of powder delivered is reduced. Therefore, as in the second aspect of the invention, by arranging the opening at the center in the vertical direction of the end portion of the powder container, the powder conveyance amount can be further stabilized and the residual powder amount. Can be reduced.
- the powder container in the powder container according to the first or second invention, is provided on the opening side of the powder container, and the powder delivered from the opening is discharged to a supply destination. And a discharge portion having a discharge port, and an inclined surface inclined downward from the opening portion toward the discharge port is provided on the discharge portion.
- the powder can be smoothly discharged from the discharge port by sliding the powder on the inclined surface.
- the powder in the powder container can be stably discharged to the end, and the amount of powder remaining in the powder container can be reduced.
- a powder container having a powder container having an opening formed at one end thereof, containing powder therein, and being deformable with a flexible material, and the powder A feeding member that feeds powder from the opening by pushing the container from outside and moving to the opening, and the other end opposite to the one end where the opening of the powder container is formed
- locking part which latches a part uses the powder container as described in any one of 1st to 3rd invention as said powder container.
- the powder conveyance amount can be stabilized and the residual powder amount can be reduced.
- the locking portion is disposed at a position above the lower end of the opening.
- the locking portion By disposing the locking portion at a position above the lower end of the opening, when the locked portion of the powder container is locked by the locking portion, the position of the locked portion is changed to the opening. It can be held above the lower end of. Thereby, when the powder in the powder container is reduced, the lower surface of the powder container is disposed so as to be inclined horizontally or downward toward the opening. That is, even if the powder in the powder container is reduced, the lower surface of the powder container does not tilt downward toward the side opposite to the opening. Can be prevented from returning due to the influence of gravity, and the amount of powder transport can be stabilized and the amount of residual powder can be reduced.
- a sixth invention is the powder conveying apparatus according to the fourth or fifth invention, wherein the delivery member is pushed by the delivery member when the delivery member pushes the powder container and moves to the opening.
- the top of the inner surface of the portion is configured so as to be at least the lower end and the upper end of the opening at least in the vicinity of the opening.
- the top of the inner surface of the pushed-in portion is lower than the lower end of the opening, the amount of powder transported is reduced.
- the top of the inner surface of the pushed-in portion becomes higher than the upper end of the opening, the powder adheres to the inner surface above the opening due to the powder feeding operation, thereby increasing the residual amount of powder.
- the top of the inner surface of the pushed-in portion by configuring the top of the inner surface of the pushed-in portion to be not lower than the lower end of the opening and not higher than the upper end, further stabilization of the powder conveyance amount can be achieved. Reduction of the amount of remaining powder can be realized.
- the locking portion is configured to be movable to the opening side and the opposite side, and the locking The portion is configured to be urged to the opposite side of the opening by the elastic member.
- An eighth aspect of the invention is an image forming apparatus including the powder conveyance device according to any one of the fourth to seventh aspects of the invention.
- the image forming apparatus includes the powder conveyance device according to any one of the fourth to seventh inventions, the powder conveyance amount can be stabilized and the remaining powder amount can be reduced.
- first, second, third, and fourth embodiments include the inventions of the following powder container, powder conveying device, and image forming apparatus (ninth to twenty-third inventions).
- a ninth aspect of the present invention is a powder container having an opening formed at one end thereof, containing powder therein, and having a powder containing portion at least partially deformable, wherein the opening comprises
- the other end portion opposite to the formed one end portion is provided with a locked portion for locking a locking portion of a mating member that pulls the other end portion away from the one end portion,
- the powder container is provided with a fold extending from the one end side to the other end side.
- the tenth aspect of the invention is the powder container according to the ninth aspect, wherein the creases are formed on the mutually opposing surfaces of the powder container.
- the powder container By making creases on the mutually opposing surfaces of the powder container, if the powder in the powder container decreases, the powder container will be folded flat along the crease. The volume can be reduced more effectively.
- An eleventh invention is the powder container according to the ninth or tenth invention, wherein the fold is attached so that the powder container is folded inward.
- a twelfth aspect of the present invention is the powder container according to any one of the ninth to eleventh aspects, wherein the fold line extends over the entire region from the one end to the other end of the powder container. It is attached.
- the folding posture of the powder container can be easily controlled. For this reason, the powder discharge property accompanying the deformation of the powder container can be stabilized.
- the thirteenth invention is the powder container according to any one of the ninth to twelfth inventions, wherein the folds and the locked portions are arranged on the same straight line.
- the powder container part By arranging the fold line and the locked part on the same straight line, the powder container part can be easily folded along the crease, and when the powder in the powder container part almost disappears, the powder container part is Folds thinner.
- a fourteenth invention is the powder container according to any one of the ninth to thirteenth inventions, wherein a hole is formed in the other end of the powder container, and the hole is used as the counterpart member.
- the locking portion for inserting and locking the locking portion is used.
- the locked portion can be configured by forming a hole in the other end of the powder container.
- a fifteenth aspect of the present invention is the powder container according to any one of the ninth to fourteenth aspects, wherein a locked member having a hole formed in the other end of the powder container is attached, The hole is used as the locked portion for inserting and locking the locking portion of the mating member.
- a locked member in which a hole as a locked portion is formed may be attached to the other end portion of the powder container.
- the locked portion since the locked portion is formed on a locked member that is separate from the powder container, the locked portion can be easily formed into various shapes simply by changing the shape of the locked member. Can be changed.
- the powder container can be identified, incompatible, or prevented from being erroneously attached.
- the shape of each powder container can be made common, it is possible to realize identification of the powder container, incompatibility, or prevention of erroneous mounting at low cost.
- a locked member is attached to the other end of the powder container,
- the stepped portion formed at the boundary with the other end is the locked portion for hooking and locking the locking portion of the mating member.
- a locked member may be attached to the other end of the powder container, and a stepped portion formed at the boundary between the locked member and the other end may be used as the locked portion.
- the locked portion can be easily changed to various shapes only by changing the shape of the locked member.
- by attaching a different-shaped locked member for each powder container it is possible to realize identification, incompatibility, or prevention of erroneous mounting of the powder container at a low cost.
- a part of the locked member is inserted into the powder container from the other end and inserted. Further, a part of the locked member is attached to the inner surface of the powder container.
- the locked member can be efficiently bonded to the powder container.
- An eighteenth aspect of the invention is the powder container according to the fifteenth or sixteenth aspect, wherein the locked member is attached to the outer surface of the other end of the powder container.
- the locked member when the locked member is bonded to the outer surface of the other end of the powder container, the locked member is attached after the powder container is filled with powder and sealed. Can do. As a result, adhesion of the powder to the locked member and damage to the locked member can be prevented, and it is not necessary to clean the adhered powder or replace the damaged locked member. Reduce costs.
- the locked member has a pair of sandwiching portions that sandwich the other end portion of the powder accommodating portion, A convex portion is provided in the sandwiching portion, a fitting hole is formed in the other sandwiching portion, a mounting hole is formed in the other end portion of the powder container, and the pair of sandwiching portions By sandwiching the other end portion of the powder container, passing the convex portion of the one sandwiching portion through the mounting hole, and fitting the convex portion into the fitting hole of the other sandwiching portion The locked member is attached to the other end of the powder container.
- the locked member can be attached.
- the damage of the locked member can be prevented. This eliminates the need for cleaning the adhered powder and replacing damaged members to be locked, thereby reducing costs. Further, in this case, a process of applying an adhesive and a process of attaching are not required for attaching the locked member, so that the attaching operation is facilitated.
- the locked member has a pair of sandwiching portions that sandwich the other end portion of the powder housing portion.
- the held member is attached to the other end portion of the powder containing portion by clamping the other end portion of the powder containing portion with the holding portion.
- the member to be locked can be attached after the powder container is filled with the powder and sealed, so that the powder to the member to be locked can be attached. Can be prevented and damage to the locked member can be prevented. This eliminates the need for cleaning the adhered powder and replacing damaged members to be locked, thereby reducing costs. Further, in this case, as in the nineteenth aspect, the step of applying an adhesive and the step of attaching are not required for attaching the locked member, so that the attaching operation is facilitated.
- a twenty-first invention is a toner cartridge that contains toner in the powder container according to any one of the ninth to twentieth inventions.
- the powder container according to any one of the ninth to twentieth inventions can be used as a toner cartridge.
- the powder container according to any one of the ninth to twentieth aspects and the deformable portion of the powder container are moved inward and moved toward the opening. And a delivery member for delivering the powder from the opening.
- the powder conveying device includes the powder container according to any one of the ninth to twentieth inventions, the above-described effects by these powder containers can be obtained.
- the twenty-third invention is an image forming apparatus comprising the powder container according to any one of the ninth to twentieth inventions.
- the image forming apparatus includes the powder container according to any one of the ninth to twentieth inventions, the above-described effects by these powder containers can be obtained.
- first, second, third, and fourth embodiments include the following powder container, powder conveying device and image forming device inventions (24th to 31st inventions).
- a powder container that contains powder and at least a part of which is deformable, a discharge part for discharging the powder in the powder container to the outside, and the powder container
- a powder conveying apparatus provided with a delivery member that moves to the discharge part side and pushes the powder to the discharge part in a state where the deformable part is pushed inward, a fixing part that fixes the discharge part, and the fixing It is provided with vibration applying means for applying vibration to the part.
- the vibration imparted to the fixed part by the vibration imparting means is transmitted to the discharge part, whereby the powder discharge from the discharge part can be promoted.
- the cross-linked powder can be broken, so that stagnation of the powder is prevented. Can do.
- the powder can be reliably discharged from the discharge part.
- the vibration applying unit is configured by attaching an eccentric weight to a rotating shaft rotated by a driving unit.
- a twenty-sixth aspect of the present invention is the powder conveying apparatus according to the twenty-fourth or twenty-fifth aspect of the present invention, wherein a swing support portion is provided that supports the fixed portion in a swingable manner.
- the fixed part can be effectively vibrated.
- the vibration applying means is provided on the end side away from the end provided with the swing support part.
- the fixed portion can be vibrated more effectively.
- a twenty-eighth aspect of the present invention is the powder conveying apparatus according to any one of the twenty-fourth to the twenty-seventh aspects, wherein a discharge port formed in the discharge unit is disposed so as to face downward, and the discharge unit is disposed in the discharge unit. An inclined surface inclined downward toward the discharge port is provided.
- the powder By providing an inclined surface inclined downward toward the discharge port, the powder can be smoothly conveyed to the discharge port along the inclined surface. Further, by disposing the discharge port so as to face downward, the powder can be dropped from the discharge port by gravity and discharged. As a result, the mechanism for discharging the powder can be simplified.
- a thirtieth aspect of the present invention is the powder conveying apparatus according to any one of the twenty-fourth to the twenty-ninth aspects, wherein a holding member is provided to hold the powder containing part in a non-contact state with respect to the discharge part. It is.
- the thirty-first invention is an image forming apparatus provided with the powder conveyance device according to any one of the twenty-fourth to thirtieth inventions.
- the image forming apparatus includes the powder conveyance device according to any one of the twenty-fourth to thirtieth inventions, the above-described effects by these powder conveyance devices can be obtained.
- first, second, third, and fourth embodiments include the following inventions of the powder conveying device and the image forming apparatus (32nd to 42nd inventions).
- a powder container that contains powder and at least a part of which is deformable, a discharge part for discharging the powder in the powder container to the outside, and the powder container
- a powder conveying apparatus comprising: a delivery member that moves toward the discharge unit with the deformable portion pushed inward, and sends the powder to the discharge unit; It is configured to vary according to the amount of powder in the part.
- the powder Since the pushing amount of the delivery member changes according to the amount of powder in the powder container, the powder can be stably and reliably delivered to the discharge part regardless of the remaining amount of powder in the powder container. .
- a thirty-third invention is the powder conveying apparatus according to the thirty-second invention, wherein the delivery member is urged toward the powder container with a predetermined urging force.
- the pushing amount of the delivery member can be changed in accordance with the amount of powder in the powder container, and the amount of powder in the powder container can be changed. Therefore, it becomes possible to send the powder stably and reliably to the discharge part.
- a thirty-fourth invention is the powder conveying apparatus according to the thirty-second or thirty-third invention, wherein the sending member is rotatably attached to a leg member movable integrally with the sending member, and the sending member is attached to the leg member. While being configured to be switchable between a standing state and a collapsed state toward the powder container, the feeding member is configured to be urged in a standing direction by an urging member.
- the amount of pushing into the powder container can be changed by switching between the standing state and the falling state of the delivery member.
- a thirty-fifth aspect of the present invention is the powder conveying apparatus according to the thirty-fourth aspect of the present invention, in which the leg member is guided against the urging force of the urging member and the guide surface for guiding the leg member when the leg member moves.
- the delivery member is configured to be held in the upright state by a regulating portion that regulates the member.
- the delivery member can be held upright by the guide surface and the restricting portion. For this reason, the urging force of the urging member can be appropriately changed according to the material of the powder container, the maximum powder capacity, and the like, and the pushing force of the delivery member can be adjusted to an appropriate value. .
- the reciprocating movement is possible in a sending direction in which the sending member is moved to the discharge portion side and a return direction in which it is moved in the opposite direction.
- the leg member receives a biasing force of the biasing member and is provided with a recess or a hole, and the delivery member moves in the delivery direction to move the feeding member.
- the feed member is moved in the return direction, and the leg member is brought into contact with the edge of the recess or the hole, thereby rotating the leg member.
- the delivery member is switched from the standing state to the fallen state, and after the delivery member moves in the return direction and the leg member enters the recess or the hole, the delivery member is moved in the delivery direction.
- the leg member with the recess or By rotating it is brought into contact with the edge of the hole, which is constituted to switch to a standing state from a state in which collapsed to the delivery member.
- the switching operation between the standing state and the collapsed state of the delivery member can be realized by a simple mechanism that allows the leg member to enter the recess or the hole, the configuration can be simplified. Further, when the delivery member is moved in the return direction, the delivery member is switched to the collapsed state, so that it is possible to prevent the powder from being returned by the delivery member.
- a thirty-seventh aspect of the invention is the powder conveying apparatus according to the thirty-sixth aspect of the invention, further comprising a movement direction switching means for switching the movement direction of the delivery member, and when the delivery member reaches the movement direction switching position, Input means for turning on the moving direction switching means in contact with or in proximity to the moving direction switching means is provided on the sending member.
- the movement direction of the delivery member is switched by the input means contacting or approaching the movement direction switching means, so that the powder delivery operation can be performed continuously.
- a thirty-eighth aspect of the invention is the powder conveying apparatus according to any one of the thirty-second to thirty-seventh aspects, wherein a discharge port formed in the discharge portion is disposed so as to face downward, and the discharge portion includes the discharge port. An inclined surface inclined downward toward the discharge port is provided.
- the powder By providing an inclined surface inclined downward toward the discharge port, the powder can be smoothly conveyed to the discharge port along the inclined surface. Further, by disposing the discharge port so as to face downward, the powder can be dropped from the discharge port by gravity and discharged. As a result, the mechanism for discharging the powder can be simplified.
- a thirty-ninth aspect of the invention is the powder conveying apparatus according to any one of the thirty-second to thirty-eighth aspects, wherein an opening holding member that holds the powder inlet formed in the powder container in an open state is provided. It is provided.
- the powder holding port is held by the opening holding member so that the powder can be easily filled from the powder charging port.
- a fortyth aspect of the invention is the powder conveying apparatus according to any one of the thirty-second to thirty-ninth aspects of the present invention, provided with a fixing portion that can integrally attach and detach the powder container and the discharge portion, A fixed arm that is switched by rotating between a fixed position for fixing a fixed portion provided in the powder container or the discharge portion and a fixed release position for releasing the fixing, and one end of the fixed arm. And a spring member that urges the fixed arm in the direction in which the fixed arm is rotated when the fixed end of the fixed arm exceeds the rotation fulcrum of the fixed arm. .
- the spring member biases the fixed arm in the direction in which the fixed arm rotates. It can be held at a later position and can be securely fixed.
- the fixed portion comes into contact with the fixed arm in accordance with the attaching / detaching operation of the powder container and the discharge portion to the fixed portion. By making contact, the fixed arm can be rotated.
- Rotating operation of the fixing arm can be performed in accordance with the attaching / detaching operation to the fixing portion, so that the powder container and the discharging portion can be easily fixed and released, and the operability is excellent.
- the forty-second invention is an image forming apparatus comprising the powder conveyance device according to any one of the thirty-second to forty-first inventions.
- the image forming apparatus includes the powder conveyance device according to any one of the thirty-second to forty-first aspects of the invention, the above-described effects by these powder conveyance devices can be obtained.
- first, second, third, and fourth embodiments include the following inventions of the powder conveying device and the image forming apparatus (43th to 51st inventions).
- a forty-third aspect of the present invention relates to a powder container that accommodates powder and at least a part of which can be deformed, a discharge part for discharging the powder in the powder container to the outside, and the powder container
- a powder conveying apparatus including a delivery member that moves toward the discharge unit while pushing the deformable portion inward and sends the powder to the discharge unit, depending on the amount of powder remaining in the powder storage unit And a control means for controlling the movement of the delivery member toward the discharge section.
- a forty-fourth aspect of the present invention is the powder conveying apparatus according to the forty-third aspect, wherein the number of movements of the delivery member to the discharge unit side within a predetermined time as the remaining amount of powder in the powder container decreases. Is configured to increase.
- the amount of powder that can be delivered to the discharge unit with a single movement of the delivery member decreases. Therefore, by increasing the number of movements of the delivery member as the remaining amount of powder decreases, an amount of powder equivalent to that when the remaining amount of powder is large can be sent to the discharge unit. Thereby, stable powder conveyance can be performed regardless of the amount of powder contained in the powder container.
- Forty-fifth aspect of the present invention is the powder conveying apparatus according to the forty-fourth aspect of the present invention, wherein the moving speed of the sending member is increased as the number of movements of the sending member is increased.
- a forty-sixth aspect of the present invention is the powder conveying apparatus according to any one of the forty-third to forty-fifth aspects, further comprising powder detection means for detecting powder in the discharge portion, and the discharge by the powder detection means.
- the delivery member When it is detected that the powder in the part is less than a predetermined amount, the delivery member is moved to the discharge part side in response to a delivery instruction to send the powder to the discharge part, and the powder detection means moves the inside of the discharge part. The movement of the delivery member to the discharge portion side is repeated a predetermined number of times until it is detected that the amount of the powder exceeds a predetermined amount.
- the amount of powder remaining in the powder container is large. Regardless of the amount, a predetermined amount or more of powder can be supplied into the discharge section. In other words, since the remaining amount of powder in the powder container is small, even if a predetermined amount of powder cannot be sent to the discharge part by one movement of the delivery member, the movement of the delivery member is repeated. It is possible to send a predetermined amount of powder to the discharge section. As a result, the powder can be stably and reliably conveyed regardless of the amount of powder remaining in the powder container.
- the powder detection means has a piezoelectric element, and the contact pressure of the powder to the piezoelectric element is measured to detect the powder.
- This is a piezoelectric sensor.
- the amount of powder can be detected directly, so that the detection accuracy is improved and an appropriate amount of powder can be sent to the discharge section.
- a forty-eighth aspect of the present invention is the powder conveying apparatus according to the forty-seventh aspect of the present invention, wherein the powder detection means includes a light emitting unit that emits light and a light receiving unit that receives light, and the light receiving unit receives the light from the light emitting unit.
- the powder detection means includes a light emitting unit that emits light and a light receiving unit that receives light, and the light receiving unit receives the light from the light emitting unit.
- the powder detection means can be an optical sensor.
- a forty-ninth aspect of the present invention is the powder conveying apparatus according to the forty-eighth aspect, wherein the light emitting unit and the light receiving unit are disposed outside the discharge unit so as not to contact the discharge unit, and the discharge unit A light guide path from the light emitting part to the light receiving part is formed in the part.
- the 50th invention is the powder conveying apparatus according to any one of the 46th to 49th inventions, further comprising vibration applying means for applying vibration to the discharge section.
- vibration is applied to the discharge portion by the vibration applying means, it is possible to prevent the powder from adhering to the inner surface of the discharge portion, or it is possible to drop the powder attached by the vibration. . Thereby, it is possible to prevent erroneous detection of the powder detection means due to the adhesion of powder.
- a fifty-first invention is an image forming apparatus comprising at least a developing device and a developer replenishing device for replenishing the developer to the developing device, wherein the developer replenishing device is any of the 43rd to 50th inventions.
- 1 is an image forming apparatus using the powder conveyance device according to 1;
- the image forming apparatus uses the powder conveying device according to any one of the 43rd to 50th inventions as a developer replenishing device, the above-described effects of these powder conveying devices can be obtained.
- the powder container, the powder conveying device, and the image forming apparatus according to the present invention are useful for an image forming apparatus such as a copying machine or a printer. It is suitable for copying machines, printers, and the like that are equipped with a powder container.
- Toner conveying device 60 Toner supply device 61 Toner cartridge (powder container) 62b Hook (locking part) 62k torsion coil spring (elastic member) 66 Toner container (powder container) 66a Toner slot (opening) 66b hole (locked part) 66c Ventilation part 67 Discharge part 67i Ventilation part T Toner (powder)
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Abstract
Description
まず、図1及び図2にて、画像形成装置全体の構成及び動作について説明する。図1は、画像形成装置としてのプリンタを示す構成図であり、図2はその作像部を示す拡大図である。
図27~図33を参照して、実施の形態2について詳細に説明する。本実施の形態2において、特段の説明をしていない構成については、実施の形態1と同様である。
図34~図38を参照して、実施の形態3について詳細に説明する。本実施の形態3において、特段の説明をしていない構成については、実施の形態1と同様である。以下、図34~図38に基づき、振動付与手段、及びその振動付与手段を設けた固定部の具体的構成について説明する。
図41~図47を参照して、実施の形態4について詳細に説明する。本実施の形態4において、特段の説明をしていない構成については、実施の形態1と同様である。
60 トナー補給装置
61 トナーカートリッジ(粉体収容器)
62b 引っ掛け部(係止部)
62k 捩りコイルバネ(弾性部材)
66 トナー収容部(粉体収容部)
66a トナー投入口(開口部)
66b 孔部(被係止部)
66c 通気部
67 排出部
67i 通気部
T トナー(粉体)
Claims (15)
- 一端部に開口部が形成され、内部に粉体が収容されると共に、柔軟な材料で変形可能に形成された粉体収容部と、
前記開口部が形成された一端部に設けられ、粉体搬送装置に固定され、前記開口部から送り出された粉体を前記粉体搬送装置へ排出する排出部と、
前記開口部側とは反対側の端部に設けられ、前記粉体搬送装置の係止部によって、粉体収容部の外側から前記開口部へと移動させる送出部材を、その移動方向とは反対方向に付勢されながら係止される被係止部と、
を備え、
前記粉体収容部の外側から前記送出部材を押し込んで前記開口部へと移動させることにより前記開口部から粉体が送り出されることを特徴とする粉体収容器。 - 内外での通気を可能にする通気部を有する請求項1に記載の粉体収容器。
- 前記通気部を前記粉体収容部に設けた請求項2に記載の粉体収容器。
- 前記通気部を前記粉体収容部の上面に設けた請求項3に記載の粉体収容器。
- 前記粉体収容部を通気性を有する部材で構成した請求項3に記載の粉体収容器。
- 前記通気部を前記排出部に設けた請求項2に記載の粉体収容器。
- 前記通気部を、前記排出部の上面であって、前記排出部に設けられた排出口と対向するように設けた請求項6に記載の粉体収容器。
- 一端部に開口部が形成され、内部に粉体が収容されると共に、柔軟な材料で変形可能に形成された粉体収容部を有する粉体収容器と、
前記粉体収容部の外側から押し込んで前記開口部へと移動することにより前記開口部から粉体を送り出す送出部材と、
前記開口部が形成された前記粉体収容部の一端部に設けられ、粉体搬送装置に固定され、前記開口部から送り出された粉体を前記粉体搬送装置へ排出する排出部と、
前記粉体収容部の前記開口部側とは反対側の端部に設けられ、前記粉体搬送装置の係止部によって前記送出部材の前記移動方向とは反対方向に付勢されながら係止される被係止部と、
を備えることを特徴とする粉体搬送装置。 - 前記係止部を前記排出部側とそれと逆方向に移動可能に構成すると共に、当該係止部を弾性部材を介して前記排出部側とは逆方向へ付勢するように構成した請求項8に記載の粉体搬送装置。
- 前記粉体収容器に内外での通気を可能にする通気部を設けた請求項8に記載の粉体搬送装置。
- 前記通気部を前記粉体収容部に設けた請求項10に記載の粉体搬送装置。
- 前記通気部を前記粉体収容部の上面に設けた請求項11に記載の粉体搬送装置。
- 前記通気部を前記排出部に設けた請求項10に記載の粉体搬送装置。
- 前記通気部を、前記排出部の上面であって、前記排出部に設けられた排出口と対向するように設けた請求項13に記載の粉体搬送装置。
- 請求項8に記載の粉体搬送装置を備えたことを特徴とする画像形成装置。
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US13/643,718 US8953986B2 (en) | 2010-04-27 | 2011-04-21 | Powder container, powder conveying apparatus, and image forming apparatus |
CN201180030242.XA CN102947762B (zh) | 2010-04-27 | 2011-04-21 | 粉体收纳容器、粉体输送装置及图像形成装置 |
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JP2010102628A JP5605611B2 (ja) | 2010-04-27 | 2010-04-27 | 粉体搬送装置及び画像形成装置 |
JP2010102634A JP5605612B2 (ja) | 2010-04-27 | 2010-04-27 | 粉体搬送装置及び画像形成装置 |
JP2010-102630 | 2010-04-27 | ||
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JP2010-102628 | 2010-04-27 | ||
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JP2010212293A JP5659657B2 (ja) | 2010-09-22 | 2010-09-22 | 粉体搬送装置及び画像形成装置 |
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JP2011024848A JP2012163808A (ja) | 2011-02-08 | 2011-02-08 | 粉体収容器、トナーカートリッジ、粉体搬送装置及び画像形成装置 |
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JP2011043866A JP5741907B2 (ja) | 2011-03-01 | 2011-03-01 | 粉体搬送装置及び画像形成装置 |
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