JP5326726B2 - SEALING STRUCTURE, DEVELOPING DEVICE, CLEANING DEVICE, AND IMAGE FORMING DEVICE - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing structure where distortion caused by holding liquid material that is applied in a liquid state and cured in a gap between members is avoided, a developing device having the sealing structure, and a cleaning device having the sealing structure. <P>SOLUTION: The sealing structure includes: a first member; the liquid material that is applied in the liquid state linearly on the first member and solidified; and a second member that holds the liquid material between the first member and the second member, and includes a gap between the first member and the second member, which is sealed with the liquid material. At least one of the first member and the second member includes a hole or a groove which at least one of a portion of starting application of the liquid material and a portion of finishing application of the liquid material gets into. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a sealing structure, a developing device, a cleaning device, and an image forming apparatus.

  Patent Document 1 describes a configuration in which a liquid elastomer is applied between constituent members of a cartridge in which a plurality of constituent members are combined to prevent the contained material from flowing out between the members.

Japanese Patent Laid-Open No. 08-211740

  The present invention relates to a sealing structure in which a liquid material that is elastic even when applied in a liquid state and is cured and whose shape is changed by an external force is prevented from being sandwiched between gaps between members, and development having this sealing structure It is an object of the present invention to provide an apparatus, a cleaning device having the sealing structure, and an image forming apparatus having the sealing structure.

The blocking structure according to claim 1 is:
A first member;
A liquid material which is applied in a linear liquid form on the first member, has elasticity even when cured, and changes its shape by an external force; and
The liquid material is sandwiched between the first member, and a gap between the liquid member and the first member is sealed with the liquid material.
The first member is characterized in that at least one of the application start portion and the application end portion of the liquid material is provided, and a groove that is deeper toward the end of the line of the liquid material is provided.

The blocking structure according to claim 2 is:
The liquid material is applied while being ejected from a nozzle that moves relative to the first member and stops at least one of the application start and the application end relative to the first member. It is characterized by that.

The blocking structure according to claim 3 is:
The first member is characterized in that a groove having a constant width but a constant width is provided as the groove approaches the end of the line of the liquid material.

The blocking structure according to claim 4 is:
The first member is characterized in that, as the groove, a groove having a width that is wider toward the end of the line of the liquid material is provided.

The blocking structure according to claim 5 is:
A first member;
A liquid material which is applied in a linear liquid form on the first member, has elasticity even when cured, and changes its shape by an external force; and
The liquid material is sandwiched between the first member, and a gap between the liquid member and the first member is sealed with the liquid material.
The second member is provided with a hole into which at least one of an application start portion and an application end portion of the liquid material enters.

The blocking structure according to claim 6 is:
The liquid material is applied while being ejected from a nozzle that moves relative to the first member and stops at least one of the application start and the application end relative to the first member. It is characterized by that.

The blocking structure according to claim 7 is:
The second member is characterized in that, as the hole, a hole that is wider as it approaches the end of the line of the liquid material is provided.

A developing device according to claim 8 is provided:
The toner having a blocking structure according to any one of claims 1 to 7, wherein the developer containing the toner is accommodated inside and development is performed with the toner, and leakage of the toner is prevented by the blocking structure. It is characterized by that.

A cleaning device according to claim 9 is:
The deposit structure according to any one of claims 1 to 7, wherein deposits on the surface of the object to be cleaned are removed and accommodated in the seal structure, and leakage of the deposits is prevented. It is characterized by.

An image forming apparatus according to claim 10 is provided.
The body,
An attachment / detachment member having a sealing structure according to any one of claims 1 to 7, wherein the attachment / detachment member is attached to and detached from the main body.

  According to the blocking structure according to the first aspect, the reaction force when the liquid material is sandwiched becomes uniform.

  According to the sealing structure concerning Claim 2 and Claim 6, it is not necessary to provide an extra space at the end of the first member.

  According to the sealing structure concerning Claim 3, Claim 4, and Claim 7, the design which makes reaction force uniform becomes easy.

  According to the sealing structure according to the fifth aspect, distortion caused by sandwiching a liquid material that is applied in a liquid state and has elasticity even when cured and whose shape is changed by an external force between the members is avoided.

  According to the developing device of the eighth aspect of the present invention, it is possible to avoid contamination or the like outside the device due to toner.

  According to the cleaning device of the ninth aspect, it is possible to avoid contamination outside the device due to adhered matter.

  According to the image forming apparatus of the tenth aspect, it is possible to avoid contamination in the apparatus due to materials related to image formation.

It is a schematic sectional drawing of the image forming apparatus which is a prior art example. It is a front view of a part of the cleaning device. It is a figure which shows the braid | blade support plate of the state which supported the braid | blade. It is a figure which shows a cleaning frame. It is a figure which shows the flow of the assembly method of a cleaning apparatus. It is a figure which shows the narrowed entrance of the cleaning frame. It is a figure which shows a mode that the photosensitive drum was assembled | attached to the holding | maintenance part of the cleaning frame. It is sectional drawing of the cleaning apparatus with which the photoconductive drum was assembled | attached. It is an external appearance perspective view of the cleaning frame provided with the above-mentioned groove part. It is a figure which shows the dimension of the groove part shown by FIG. FIG. 2 is an exploded perspective view of the developing device shown in FIG. 1. It is sectional drawing which shows notionally the structure of a developer storage tank and its cover. It is a figure which shows a part of cover receiving part of a developer storage tank. It is a figure which shows a lid | cover. It is a figure which shows a mode that the cover was fixed to the developer storage tank. It is sectional drawing corresponding to the part (b) of FIG. 15 of the groove part provided in the lid | cover.

  Hereinafter, embodiments of the present invention will be described.

  FIG. 1 is a schematic cross-sectional view of a conventional image forming apparatus.

  In the image forming apparatus 1 shown in FIG. 1, an exposure device is applied to the surface of a photosensitive drum 10 to which a predetermined charge is applied by a charging roll 11 and which rotates in the direction of arrow A, based on image data transmitted from the outside. The electrostatic latent image is formed by irradiating the exposure light generated in 12, and the electrostatic latent image is developed with toner accommodated in the developing device 13 having the developing roller 131 that rotates in the direction of arrow C. . The developed image obtained by this development is drawn from a paper cassette (not shown), transferred onto a recording paper conveyed in the direction of arrow B by a transfer roll 14 rotating in the direction of arrow D, and fixed in a fixing device 15. The image is formed on the recording paper by being fixed by. The image forming apparatus 1 is an embodiment of the image forming apparatus of the present invention. The image forming apparatus 1 is a monochrome image dedicated machine.

  Further, FIG. 1 shows a cleaning device 2 that contacts the portion of the photosensitive drum 10 where the development image has been transferred onto the recording paper and removes the adhering matter adhering to the surface of the photosensitive drum 10. Yes.

  FIG. 2 is a front view of a part of the cleaning device.

  FIG. 2 shows an end portion of the cleaning device 2 when the cleaning device 2 shown in FIG. 1 is viewed from the developing device 13 side through the photosensitive drum 10. Since the cleaning device 2 is symmetrical, only the end portion shown here will be described below.

  The cleaning device 2 includes a cleaning frame 21, a blade 22, a blade support plate 23, a film member 24, and a felt member 25.

  The blade 22 is made of rubber that removes deposits adhering to the surface of the photosensitive drum 10 with which the tip 221 contacts.

  The blade support plate 23 is a metal plate material that supports the blade 22, and is fixed to the cleaning frame body 21 by fastening screws 230.

  The cleaning frame 21 has a recessed space for accommodating deposits removed from the surface of the photosensitive drum 10, and a blade that supports the blade 22 at a part of the periphery of the inlet 210 a (see FIG. 4) of the recessed space. A main body part 210 to which the support plate 23 is screwed and a holding part 211 that rotatably holds both ends of the photosensitive drum 10 are provided. In addition to the boss 2101 used for positioning the blade support plate 23, the main body 210 is also provided with a boss 2102 used for positioning for arranging the cleaning frame 21 at a predetermined position in the image forming apparatus 1. Yes. As will be described in detail later, screwing of the blade support plate 23 that supports the blade 22 to the cleaning frame 21 is an example of a liquid material that cures and is applied to the periphery of the inlet 210 a of the cleaning frame 21. This is performed while sandwiching a sealing material 20 (see FIG. 6) composed of a thermoplastic elastomer, so that the deposits accommodated in the recess space do not leak from the gap between the cleaning frame body 21 and the blade support plate 23. ing.

  The felt member 25 includes two layers, a felt layer 251 and an elastic layer 252 (see FIG. 7). The elastic layer 252 is slightly held by the photosensitive drum 10 held by the holding portion 211 of the cleaning frame body 21. The thickness is crushed. As a result, the felt layer 251 is in close contact with the photosensitive drum 10, thereby preventing deposits from leaking in a direction perpendicular to the rotation direction of the photosensitive drum 10.

  Further, the felt member 25 is provided with a protruding portion 250 protruding toward the center of the inlet 210a of the cleaning frame 21. FIG. 2 shows a state in which the side surface of the protruding portion 250 and the side surface on the blade side of the felt member 25 other than the protruding portion 250 are attached to the corners of the blade 22. Thereby, the leakage of the deposits following the corners of the blade 22 is prevented. Here, the felt layer 251 is used for the contact portion with the photoconductor drum 10, but if the material has a low friction coefficient and does not hinder the rotation of the photoconductor drum 10 even by contact with the photoconductor drum 10, it is felt. Materials other than wood may be used.

  The film member 24 is a polyurethane sheet, and the tip 241 comes into contact with the photosensitive drum 10 held by the holding portion 211 of the cleaning frame 21, so that the film member 24 is attached from the opposite side of the blade 22. Kimono leakage is prevented.

  FIG. 3 is a view showing the blade support plate in a state where the blade is supported.

  FIG. 3 shows a blade support plate 23 in a state where the blade 22 is supported before being screwed to the cleaning frame 21 of the cleaning device 2. Here, the blade support plate 23 is screwed to the cleaning frame 21. In this state, the surface facing the cleaning frame 21 is shown facing upward. 3 shows a state in which a hole 23a through which the retaining screw 230 shown in FIG. 2 passes and a hole 23b through which the boss 2101 of the cleaning frame body 21 passes are provided.

  FIG. 4 is a view showing the cleaning frame.

  FIG. 4 shows the cleaning frame body 21 in a state before the blade support plate 23, the felt member 25, and the film member 24 are attached to the main body 210, and here, a recessed space for accommodating deposits. The state in which the entrance 210a of is exposed is shown. In FIG. 4, reference numerals A to D are attached to the respective peripheral portions forming the peripheral edge of the inlet 210 a of the recessed space. This is provided for the convenience of the following description. Yes, the cleaning frame 21 is not actually attached. In addition, the peripheral edge portion A, the peripheral edge portion B, and the peripheral edge portion C exist on the same surface, while the peripheral edge portion D exists on a surface that intersects the surface.

  Here, a method of assembling the cleaning device 2 will be briefly described with reference to FIGS.

  FIG. 5 is a diagram showing the flow of the assembly method of the cleaning device.

  In FIG. 5, as step S <b> 1, a sealing material 20 that is applied in a liquid state and has elasticity even when cured and changes its shape by an external force to close a gap between members is shown in FIG. 4. It is applied to the peripheral portion A, the peripheral portion B, and the peripheral portion C that form the peripheral edge of the opening 210a.

  Next, as step S <b> 2, the blade support plate 23 that supports the blade 22 is screwed and fixed to the cleaning frame body 21. At this stage, of the peripheral edge of the inlet 210a, the peripheral edge portion A and a part of the peripheral edge portion B and the peripheral edge portion C are covered with the blade support plate 23 that supports the blade 22, and the inlet 210a is The state is narrower than the state shown in FIG.

  FIG. 6 is a view showing a narrowed entrance of the cleaning frame. In FIG. 6, the edge of the inlet 210 a that is not covered with the member is indicated by a one-dotted line, and the sealing material 20 applied to the peripheral portion is covered with the member. The portion of the sealing material 20 that is not present is indicated by a dotted line.

  FIG. 6 shows the seal member 20 applied to the peripheral portion A, the peripheral portion B, and the peripheral portion C that constitute the peripheral edge of the inlet 210a, in addition to the inlet 210a covered with the blade 22 and the like. The part of the sealing material 20 covered by the blade support plate 23 that supports the blade 22 is crushed and expanded by fixing the blade support plate 23 that supports the blade 22 to the cleaning frame 21. Has been. Returning to FIG.

  Next, the felt member 25 is affixed on the felt sticking surface 2103 (refer FIG. 4) as step S3. Furthermore, the film member 24 is affixed on the peripheral part D as step S4. Here, the lower part of the film member 24 is affixed to the peripheral part D with a double-sided tape (not shown). Furthermore, as step S5, the photosensitive drum 10 is assembled to the holding portion 211 of the cleaning frame 21.

  FIG. 7 is a diagram illustrating a state where the photosensitive drum is assembled to the holding portion of the cleaning frame. In FIG. 7, the illustration of the film member 24 is omitted to avoid complication.

  FIG. 7 shows a state in which the peripheral portion B is viewed in the direction of the arrow X in FIG. 6. Here, the felt member 25 is attached to the felt attaching surface 2103 by the double-sided tape 26. It is shown. As described above, since the elastic layer 252 of the felt member 25 is somewhat compressed when the photosensitive drum 10 is assembled to the holding portion 211 of the cleaning frame 21, the felt layer 251 is in close contact with the photosensitive drum 10. At this time, the sealing material 20 applied to the peripheral portion B is also compressed between the double-sided tape 26 and the peripheral portion B. FIG. 7 shows a state in which the convex portion 250 of the felt member 25 described in FIG. 2 protrudes toward the center of the inlet 210a from the felt sticking surface 2103.

  FIG. 8 is a cross-sectional view of the cleaning device in which the photosensitive drum is assembled.

  FIG. 8 shows a state in which the cross section indicated by the alternate long and short dash line in FIG. 7 is viewed in the direction of the arrow Y, and the tip 241 of the film member 24 attached to the peripheral portion D by the double-sided tape 26 is felt. A state of being caught on the member 25 side is shown.

  Further, FIG. 8 shows a state in which the sealing material 20 indicated by diagonal lines closes the gap between the cleaning frame body 21 and a member fixed to or attached to the cleaning frame body 21 without a gap. ing. This cleaning device 2 is formed into a cartridge so that it can be replaced by the user's hand when the image quality deteriorates due to wear of the photosensitive drum 10 or the like. The cleaning device 2 corresponds to an example of the detachable member according to the present invention.

  The above is a rough flow of the assembly method of the cleaning device 2.

By the way, application of the sealing material 20 that is cured after being applied in liquid form to the peripheral portions A, B, and C shown in FIG. 4 is controlled from the nozzle tip 301 (see FIG. 9) by controlling the opening and closing of the on-off valve. Nozzle unit 300 (see FIG. 9) for controlling the start and stop of discharge of the sealing material 20 at a constant discharge speed (mm ³ / s), and a cleaning frame body holding base for holding the cleaning frame body 21 in a predetermined posture , A sealant supply unit that supplies the sealant 20 to the nozzle unit 300, an instruction unit that instructs the nozzle unit 300 to open or close the on-off valve, and the nozzle unit 300, and according to the input three-dimensional coordinate value In addition, an automatic sealant coating system having a moving arm for moving the nozzle unit 300 is provided with a three-dimensional coordinate position of the home position of the nozzle tip 301, a coating start point for each peripheral portion, and coating. The relative three-dimensional coordinate position relative to the home position of Ryoten, and the relative three-dimensional coordinate positions between points is considered to be carried out using those registered.

  However, when the sealing material 20 is applied along the peripheral edge using this automatic sealing material application system, the nozzle tip 301 is included due to the restriction of the shape of the cleaning frame 21 to which the sealing material 20 is applied. The nozzle unit 300 is moved at each peripheral edge while increasing the speed at a constant acceleration until the cruising speed is reached while discharging the sealing material from the application start point at a constant discharge speed (hereinafter, this section is referred to as an acceleration section). Then, the nozzle is moved at a constant speed to a point where deceleration at a constant acceleration before the application end point is started (hereinafter, this section is referred to as a cruise section), and the nozzle tip 301 is further moved. When you reach the point where deceleration at this constant acceleration starts, move from there to reach zero speed when arriving at the application end point while decelerating at constant acceleration (hereinafter this section Referred to as deceleration zone.) It needs to be. When the nozzle tip 301 repeats acceleration and deceleration in this manner, the amount of sealing material applied to each part of each peripheral portion is larger in the acceleration section and the deceleration section than in the cruise section. Then, when the support plate 23 that supports the blade 22 is fixed to the cleaning frame body 21 to which the sealing material 20 is applied, the cleaning device 2 is distorted due to the large number of the sealing material 20, thereby reducing the sealing performance and the blade. In addition, there is a possibility that uneven wear occurs on the photosensitive drum.

  Therefore, the inventor of the present application accommodates the surplus portion of the sealing material 20 in this groove portion of the cleaning frame body 31 in which the groove portion is added to the cleaning frame body 21 shown in FIG. I have to. Below, this groove part is demonstrated in detail.

  FIG. 9 is an external perspective view of the cleaning frame provided with the above-described groove.

  In the cleaning frame 31 shown in FIG. 9, a first groove 310 a and a second groove 310 b are provided at the boundary between the peripheral portion C and the peripheral portion A and the boundary between the peripheral portion A and the peripheral portion B.

  Further, in FIG. 9, the trajectory of the nozzle tip 301 for applying the sealing material 20 to the cleaning frame 31 is indicated by a dotted line. First, the peripheral portion C from the application start point C1 on the peripheral portion A side to the peripheral portion. The nozzle tip 301 moves along the dotted line C ′ to the application end point C2 on the D side, and then, for the peripheral part A, the nozzle starts from the application start point A1 on the peripheral part C side to the application end point A2 on the peripheral part B side. The tip 301 moves along the dotted line A ′. Further, with respect to the peripheral portion B, the nozzle tip 301 moves along the dotted line B 'from the application start point B1 on the peripheral portion A side to the application end point B2 on the peripheral portion D side. In such a case, if the first groove portion 310a and the second groove portion 310b are not provided, the sealing material 20 applied to the end portion of each peripheral portion corresponding to the acceleration section and the deceleration section of each peripheral portion. The surplus portion increases the reaction force when the support plate 23 supporting the blade 22 is fixed to the cleaning frame body 21 and distorts the cleaning device. On the other hand, in the cleaning frame 31 shown in FIG. 9, the seal material necessary for sealing between the members is secured, and the surplus seal material 20 is accommodated in the first groove portion 310a and the second groove portion 310b. The reaction force when the support plate 23 supporting the blade 22 is fixed to the cleaning frame 31 is not increased.

  In FIG. 9, for the peripheral portions B and C, although the second groove portion 310b corresponding to the acceleration section starting from the application start point B1 and C1 of the nozzle tip 301 is provided, the nozzle application end point B2 and The groove part corresponding to the deceleration area before C2 is not provided. This is because the end point side is originally a place where many members gather, so there are many gaps, and the surplus portion of the sealing material 20 can be accommodated in the gaps. Moreover, about the 1st groove part 310a and the 2nd groove part 310b, width | variety is constant and the groove depth is so deep that it goes to the edge part of a peripheral part so that the design which makes reaction force uniform may become easy. The cleaning frame 31 is an example of the first member according to the present invention, and the first groove portion 310a and the second groove portion 310b correspond to an example of the groove portion according to the present invention. The combination of the blade 22 and the support plate 23 that supports the blade 22 corresponds to an example of the second member in the present invention.

  FIG. 10 is a diagram showing the dimensions of the groove shown in FIG.

  FIG. 10 shows a top view of the cleaning frame 31, in which the length is L1, the width is W1, and the depth D1 is the deepest at the end side of the peripheral portion A. 1 groove part 310a and the 2nd groove part 310b which is length L2 and width W2, and the depth D2 is the deepest in the edge part side of the peripheral part B are shown. About the shape of each groove part, it is so deep that it goes to the edge part of each peripheral part according to the surplus part of the sealing material 20 increasing so that it goes to the edge part of each peripheral part.

  The dimension of the 1st groove part 310a of the peripheral part A shown by FIG. 10 is demonstrated.

The acceleration of the nozzle tip 301 shown in FIG. 9 is G (mm / s ² ), the discharge speed of the sealing material 20 from the nozzle tip 301 is V (mm ³ / s), the cruise speed of the nozzle unit 300 is vc, Since the length L1 of the one groove portion 310a is the same as the acceleration / deceleration section length, the length L1 = vc ² / 2G. Further, the cross-sectional shape of the sealing material 20 applied to the peripheral portion A while the nozzle tip 301 is moving in the cruise section is semicircular, and the width W1 of the first groove 310a is set while the nozzle tip 301 is moving in the cruise section. By making it the same as the application width of the sealing material 20 applied to the peripheral portion A, the semicircular cross-sectional area is S (mm ² ) = V / vc, and therefore the width W1 = 2√ (2V / πvc). Further, the total amount of the sealing material 20 applied to the peripheral portion A corresponding to the acceleration section or the deceleration section is V × vc / G (mm ³ ), of which the amount necessary for sealing in the acceleration section or the deceleration section, that is, the cutoff Since the amount necessary to secure the semicircular sealing material 20 having an area of S (mm ² ) = V / vc is V × vc / 2G (mm ³ ), these differences are generated in the first groove 310a. It only has to be accommodated. Therefore, the depth at the deepest portion of the groove depth is D1 = √ (πV / 2vc).

  On the other hand, with respect to the dimensions of the second groove portions 310b of the peripheral portions B and C shown in FIG. 10, the peripheral portions B and C also have the acceleration G, and the cruise speed vc ′ (mm / s) at the peripheral portions B and C is the peripheral portion. Assuming that the cruising speed vc (mm / s) is half of A, the length L2 = L1 / 4, the width W2 = √2 × W1, and the deepest portion D2 of the groove portion depth = √2 × D1.

  In the cleaning device using the cleaning frame 31 provided with the first groove 310a and the second groove 310b having the above-described dimensions, an excess seal is provided between the support plate 23 supporting the blade 22 and the cleaning frame 31. Since the material 20 is accommodated in the first groove portion 310a and the second groove portion 310b that are provided in advance, the occurrence of distortion due to sandwiching the surplus portion is reliably prevented, and leakage of adhering substances to be accommodated is prevented. The sealing performance is also ensured. The cleaning device assembled as shown in FIG. 5 using the cleaning frame 31 is the first embodiment of the sealing structure of the present invention, and is also an embodiment of the cleaning device of the present invention.

  Next, the first embodiment of the developing device of the present invention, which is also the second embodiment of the blocking structure of the present invention shown in FIG. 1, will be described.

  FIG. 11 is an exploded perspective view of the developing device shown in FIG.

  In FIG. 11, the developer is accommodated in the assembly of the developing device 13 including the developing roll 131, the developer accommodating tank 132 that accommodates the developer, and the agitating and conveying member 133 for agitating and conveying the developer. The state before the lid 134 is still fixed to the tank 132 is shown. FIG. 11 shows a partition plate 1321 that divides the interior of the developer storage tank 132 into two rooms.

  FIG. 12 is a cross-sectional view conceptually showing the structure of the developer storage tank and its lid.

  12 is a cross-sectional view of the developer storage tank 132 in a state where the lid 134 is fixed. The lid 134 is attached to the lid receiving portion 1322 that receives the peripheral portion 1341 of the lid 134 (see FIG. 12). In FIG. 12, the four corners of the lid 134 are fixed to the developer storage tank 132 by screwing (not shown). As a result, the gap between the lid 134 and the developer storage tank 132 is sealed by the sealing material 20, and leakage of the developer to the outside is prevented. The developing device 13 is formed into a cartridge so that it can be replaced by the user's hand when the toner runs out. The developing device 13 corresponds to an example of the detachable member referred to in the present invention.

  Hereinafter, a device for suppressing the distortion of the developer storage tank 132 in which the sealing material 20 is sandwiched between the cover 134 and the lid 134 will be described.

  FIG. 13 is a diagram illustrating a part of the lid receiving portion of the developer storage tank.

  FIG. 13A shows a top view of a part of the lid receiving portion 1322 to which the sealing material 20 is applied, and FIG. 13B shows a view of the lid receiving portion 1322 to which the sealing material 20 is applied. The state which looked at the AA cross section of the part shown by 13 (a) in the arrow direction is shown.

  Also in the application of the sealing material 20 at the time of assembling the developer storage tank 132 and the lid 134, as described above, the application amount of the sealing material 20 at the location corresponding to the nozzle deceleration section corresponds to the cruise section of the nozzle. It becomes more than the application amount of the sealing material 20 at the location. However, the lid receiving portion 1322 is not provided with the groove as described above. For this reason, the sealing material 20 applied to the portion corresponding to the deceleration zone has a semicircular cross-sectional shape as shown in FIG. 13, and the cross-sectional area similarly increases as it approaches the end point of the deceleration zone. A semi-conical shape. FIG. 13 shows a screw hole 132a for screwing the lid 134 at the corner of the lid receiving portion 1322 and a base 1320 that forms the periphery of the screw hole 132a.

  FIG. 14 is a diagram illustrating a lid.

  Part (a) of FIG. 14 shows a state in which the CC cross section of the opening 134a shown in part (b) of FIG. 14 is viewed in the direction of the arrow.

  FIG. 14 shows an opening 134a provided in the lid 134 at a position corresponding to the deceleration section.

  The opening 134a shown in FIG. 14 has a tapered surface 1341 as shown in part (a) of FIG. 14 that is wide enough to approach the end point of the deceleration zone, in accordance with the shape of the semi-conical truncated cone described above. ing. The opening 134a corresponds to an example of the hole referred to in the present invention. A screw-through hole 134b is provided at a corner of the lid 134.

  FIG. 15 is a diagram illustrating a state where the lid is fixed to the developer storage tank.

  Part (a) of FIG. 15 shows a top view of the developer storage tank 132 to which the lid 134 is fixed, and part (b) of FIG. 15 shows the developer storage tank 132 to which the lid 134 is fixed. The state which looked at the BB cross section shown by the part (a) of FIG. 15 in the arrow direction is shown.

  In FIG. 15, the sealing material 20 enters the opening 134 a provided in the lid 134 by screwing the lid 134 to the developer storage tank 132 in which the sealing material 20 is applied to the lid receiving portion 1322. It is shown. As described above, since the opening 134 a is provided in the lid 134 as an escape path for the excess sealing material 20, an excessive force is not applied to the lid 134 and the developer storage tank 132.

  Finally, a second embodiment of the developing device of the present invention, which is also the third embodiment of the blocking structure of the present invention, will be described.

  The difference between the embodiment described with reference to FIGS. 11 to 15 and the present embodiment is that, in the embodiment described with reference to FIGS. 11 to 15, an opening 134 a is provided at the end of the lid 134 and an excessive seal is provided. In contrast to the material 20 being escaped, the present embodiment is different only in that a groove is provided on the lid side, and the excess sealing material 20 is accommodated in the groove. Hereinafter, this difference will be described.

  FIG. 16 is a cross-sectional view corresponding to part (b) of FIG. 15 of the groove provided in the lid.

As described above, when the acceleration / deceleration speed of the nozzle tip is G (mm / s ² ), the discharge speed of the sealing material 20 from the nozzle tip is V (mm ³ / s), and the cruise speed vc of the nozzle part, the deceleration zone Long (acceleration section length) length L1 = vc ² / 2G, application width w = 2h = 2√ (V / πvc) in the cruise section, total application amount A = V × vc / G in the deceleration section (acceleration section) Yes, since the total coating amount A in the deceleration zone is the same as the half volume of the truncated cone having the upper surface radius h, the lower surface radius H, and the height L1 shown in FIG. 16, H = √ (10 V / πvc). Of the semi-conical units having such dimensions, the seal between the lid 134 and the developer storage tank 132 is used from the bottom of the semi-conical units shown in an enlarged view in FIG. 16 to the height h. It is a white portion, and the other portion indicated by diagonal lines is a surplus portion. The lid 234 is provided with a groove portion 2341 having a shape and a size for accommodating this surplus. As described above, the cover 234 is provided with the groove portion 2341 that accommodates the excess sealing material 20, so that the reaction force when the support plate 23 that supports the blade 22 is fixed to the cleaning frame 31 is not increased. I am doing so.

  In the embodiment described above, an example in which the present invention is applied to a cleaning device or a developing device has been described. However, the present invention is an apparatus that seals a gap between members by sandwiching a liquid material. However, the present invention is not limited to these.

  In the embodiment described above, an example in which the liquid material discharge side is moved relative to the application surface has been described. However, in the present invention, the application surface may be moved relative to the liquid material discharge side. Good.

  Furthermore, in the embodiment described above, the case where the developing device of the present invention has a developer containing tank that contains powder such as toner as a developer has been described as an example. The container may have an ink tank that stores a liquid such as ink as a developer as long as the container is sealed with the sealing structure of the present invention.

DESCRIPTION OF SYMBOLS 1 Image forming apparatus 13 Developing device 131 Developing roll 132 Developer storage tank 1322 Cover receiving part 133 Stirring conveyance member 134, 234 Cover 1341 Tapered surface 134a Opening 2 Cleaning device 21, 31 Cleaning frame body 22 Blade 23 Blade support plate 2341 Groove part 310a 1st groove part 310b 2nd groove part

Claims (10)

A first member;
A liquid material which is applied in a linear liquid form on the first member, has elasticity even when cured, and changes its shape by an external force; and
A second member sandwiching the liquid material between the first member and a gap between the liquid member and the first member sealed with the liquid material;
The first member is provided with a groove in which at least one of an application start portion and an application end portion of the liquid material enters, and a groove that becomes deeper toward the end of the line of the liquid material is provided. .   The liquid material is applied while being discharged from a nozzle that moves relative to the first member and stops at least one of the application start and the application end relative to the first member. The blocking structure according to claim 1.   3. The sealing structure according to claim 1, wherein the first member is provided with a groove that becomes deeper as the groove approaches the end of the line of the liquid material but has a constant width.   The said 1st member is what was provided with the groove | channel which was so wide that it approached the end of the line | wire of the said liquid material as said groove | channel, The blockade of any one of Claim 1 to 3 characterized by the above-mentioned. Construction. A first member;
A liquid material which is applied in a linear liquid form on the first member, has elasticity even when cured, and changes its shape by an external force; and
A second member sandwiching the liquid material between the first member and a gap between the liquid member and the first member sealed with the liquid material;
The second member is provided with a through- hole into which at least one of an application start portion and an application end portion of the liquid material enters.   The liquid material is applied while being discharged from a nozzle that moves relative to the first member and stops at least one of the application start and the application end relative to the first member. The blocking structure according to claim 5. Said second member, said as a through hole, blocked structure according to claim 5 or 6, wherein the linear wide holes closer to the edge of the liquid material is one that was provided.   8. The toner having a blocking structure according to claim 1, wherein the developer containing the toner is accommodated inside and development is performed with the toner, and leakage of the toner is prevented by the blocking structure. A developing device.   It has the sealing structure according to any one of claims 1 to 7, and the deposit on the surface of the object to be cleaned is removed and accommodated in the sealing structure, so that leakage of the deposit is prevented. A cleaning device characterized by. The body,
An image forming apparatus comprising: a detachable member having a sealing structure according to claim 1, which is detachably attached to the main body.

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