JP5487670B2 - Liquid material application method, sealing structure, and cleaning device - Google Patents

Description

  The present invention relates to a liquid material application method, a sealing structure, and a cleaning device.

  Patent Document 1 describes a configuration in which liquid elastomer is applied between constituent members of a developing device to prevent toner from flowing out between members.

JP 2006-208552 A

  The present invention relates to a liquid material coating method that is applied in a liquid state, has elasticity even when cured, and can easily control the coating amount of a liquid material whose shape changes due to an external force, and a sealing structure to which this liquid material coating method is applied And it aims at providing the cleaning apparatus which has this sealing structure.

The liquid material application method according to claim 1 is:
A linear coating process in which a liquid material is applied in a liquid state and has elasticity even when cured, and a liquid material whose shape changes by an external force is linearly applied;
It has the point application process which applies the liquid material in the form of dots before or after the linear application process on the line on which the liquid material is applied in the linear application process.

The liquid material application method according to claim 2 is:
The above-mentioned member sandwiches the applied liquid material between another member and seals the gap between this other member with this liquid material and the gap between this member and this other member. The spacing is uneven,
The point application process is a process in which the liquid material is applied to a part of the line on which the gap is wider than the other part.

The liquid material application method according to claim 3 is:
Having a failure detection process of detecting whether the dotted application in the dotted application process has failed,
The dot application process is a process of redoing the dot application when a failure is detected in the failure detection process.

The blocking structure according to claim 4 is:
A first member;
A linear material formed by applying a liquid material, which is applied in a liquid form, has elasticity even when cured, and changes its shape by an external force to the first member;
On the line on which the linear object is formed, before or after the linear object is formed, the pointed object formed by applying the liquid material in a point form, and
A gap between the linear member and the pointed object is sandwiched between the first member and a gap between the first member and the second member sealed with the linear object and the pointed object. It is characterized by that.

A cleaning device according to claim 5 is:
It is characterized in that leakage of the deposits is prevented by this sealing structure having the sealing structure according to claim 4 and removing the deposits on the surface of the object to be cleaned.

  According to the liquid material coating method of the first aspect, it is easy to control the coating amount of the liquid material.

  According to the liquid material coating method of the second aspect, the gap between the members can be reliably sealed.

  According to the liquid material application method according to the third aspect, the liquid material can be reliably applied to the gap between the members.

  According to the sealing structure concerning Claim 4, the sealing performance of the clearance gap between members improves.

  According to the cleaning device of the fifth aspect, leakage of the contents from the gap between the members is reliably prevented.

1 is a schematic sectional view of an image forming apparatus. 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 a figure which shows one Embodiment of the liquid material application | coating method of this invention. It is a figure which shows one Embodiment of the liquid material application | coating method of this invention. It is a flowchart of the program performed when implementing this sealing material application | coating method.

  Hereinafter, embodiments of the present invention will be described.

  FIG. 1 is a schematic sectional view of the 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 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. In addition, as will be described in detail later, the screw support of the blade support plate 23 supporting the blade 22 to the cleaning frame body 21 is applied in liquid form to the periphery of the inlet 210a of the cleaning frame body 21 and has elasticity even when cured. This is performed while sandwiching a sealing material 20 (see FIG. 6) made of a thermoplastic elastomer which is an example of a liquid material whose shape is changed by an external force. 21 and the blade support plate 23 are prevented from leaking.

  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.

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

By the way, the application of the 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 the peripheral portions A, B, and C shown in FIG. The nozzle 300 for controlling the start and stop of discharge of the sealing material 20 at a constant discharge speed (mm ³ / s) from the nozzle tip 301 and the cleaning frame for holding the cleaning frame 21 in a predetermined posture A body holder, a sealant supply unit for supplying the sealant 20 to the nozzle unit 300, an instruction unit for instructing the nozzle unit 300 to open or close the on-off valve, and a three-dimensional coordinate input by holding the nozzle unit 300 Depending on the value, the automatic sealing material application system having a moving arm that moves the nozzle unit 300 is applied to the three-dimensional coordinate position of the home position of the nozzle tip 301 and each peripheral portion. Start, the relative three-dimensional coordinate position relative to the home position of the coating end point, and the relative three-dimensional coordinate positions between points is considered to be carried out using those registered. However, the peripheral portions B and C are more complicated in the shape of the gap with the facing member than the peripheral portion A, and the amount of the seal corresponding to the gap between the facing member and the peripheral portions B and C is large. It is difficult to secure the material by controlling the moving speed of the coating device when the nozzle tip 301 reaches the location. However, if this is left unattended, the collected deposits may leak from the peripheral portions B and C.

  In view of this, in the cleaning device 2, the following measures are taken for applying the sealing material 20 to the peripheral edge portion A, the peripheral edge portion B, and the peripheral edge portion C that constitute the peripheral edge of the inlet 210 a.

  9 and 10 are diagrams showing an embodiment of the liquid material coating method of the present invention.

  9 and 10 show the movement locus of the nozzle tip 301 for applying the sealing material 20 to the cleaning frame 21. FIG.

  9 and 10, a simplified cleaning frame body 21 and a sealing material 20 composed of a thermoplastic elastomer, which is an example of a liquid material that is applied and cured in a liquid state, are discharged from a nozzle tip 301. A nozzle portion 300 is shown. Further, as will be described in detail later, the vibration sensor 40 detects vibration generated at the moment when air is sunk into the nozzle unit 300 and the squeezed air is discharged from the nozzle tip 301 instead of the sealing material 20. Is attached. The vibration sensor 40 is connected to a vibration waveform analysis unit provided in the automatic sealing material application system, and a signal detected by the vibration sensor 40 is transmitted to the vibration waveform analysis unit. The vibration waveform analysis unit stores in advance data representing the distribution (reference distribution) of frequency components of signals detected when the sealing material 20 is normally ejected. The vibration sensor 40 analyzes the distribution of the frequency component of the signal transmitted from the vibration sensor 40 and compares it with this reference distribution. The reception time of the signal is recorded in the memory. 9, the illustration of the inlet 210a shown in FIG. 4 is omitted. In FIG. 9, the surface including the peripheral edge portion A, the peripheral edge portion B, and the peripheral edge portion C among the peripheral edges of the inlet 210 a of the cleaning frame body 21 is a surface parallel to the XY plane in the XY coordinates shown in FIG. 9. Proceed as if there is.

  First, as shown in FIG. 9A, the peripheral portion B of the peripheral edge of the inlet 210a shown in FIG. 4 extends from the first start point S1 to the first end point D1, that is, with the Y axis shown in FIG. The sealing material 20 is applied while moving the tip of the nozzle 301 in parallel.

  After the application of the sealing material 20 to the peripheral portion B is finished, as shown in FIG. 9B, the nozzle 301 moves in the Z-axis direction on the plane parallel to the YZ plane, and the first end point D1 Move to 1 waypoint V1.

  Next, as shown in FIG. 9C, the nozzle tip 301 moves from the first via point V1 on the plane parallel to the YZ plane in the Y-axis direction, passes through the second via point V2, , It moves in the X-axis direction on a plane parallel to the XY plane and moves to the third via point V3.

  Next, as shown in FIG. 9 (d), after the nozzle tip 301 moves from the third via point V3 to the second start point S2 in the Z-axis direction on a plane parallel to the YZ plane, The sealing material 20 is applied to the peripheral portion C from the second start point S2 to the second end point D2, that is, while moving the tip of the nozzle tip 301 in the Y-axis direction shown in FIG.

  Next, as shown in FIG. 9 (e), the nozzle tip 301 moves from the second end point D2 on the plane parallel to the YZ plane in the Z-axis direction, passes through the fourth via point V4, and passes through the XY point. On the plane parallel to the plane in the X-axis direction, via the fifth via point V5, on the plane parallel to the YZ plane in the Y-axis direction, via the sixth via point V6, After moving on the parallel plane in the Z-axis direction to reach the third start point S3, the sealant is applied to the peripheral portion A while moving on the plane parallel to the XY plane in the X-axis direction and moving to the third end point D3. 20 is applied. The continuous application process of the sealing material 20 described above is an example of the linear application process referred to in the present invention.

  FIG. 10A shows a state where the nozzle unit 300 in the state shown in FIG. 9E is viewed in the negative direction with respect to the X axis shown in FIG. FIG. 10A shows a first start point S1 and a first end point d1 of application of the sealing material 20 to the peripheral portion B shown in FIG. 9A. Further, at the stage shown in FIG. 10A, the nozzle tip 301 is actually located on the far side in FIG. 10 from the first start point S1. Hereinafter, in order to apply the sealing material 20 on the sealing material 20 applied in a linear manner as shown in FIG. 9, in a place where the gap with the opposing member is large and where the sealing material 20 is difficult to enter. As shown below, the sealing material 20 is applied in the form of dots.

  First, as shown in FIG. 10B, the nozzle tip 301 moves from the third end point D3 shown in FIG. 9E in the Z-axis direction on a plane parallel to the YZ plane shown in FIG. As shown in FIG. 10 (c), after moving through the seventh waypoint V7, it moves in the X-axis direction on the plane parallel to the XZ plane and passes through the eighth waypoint V8, and then passes through FIG. As shown in FIG. 3, the Y-axis direction is moved on the plane parallel to the YZ plane and moved to the first point application point P1. In addition, this 1st point application | coating point P1 exists on the surface where both the 1st start point S1 and the 1st end point D1 exist.

  As shown in FIG. 10E, the nozzle tip 301 applies the sealing material 20 in a dot shape at the first point application point P1.

  Next, as shown in FIG. 10 (f), the nozzle tip 301 moves from the first point application point P1 on the surface parallel to the YZ plane in the Y-axis direction to the second point application point P2, The sealing material 20 is applied in the form of dots at the second point application point P2. The dot-shaped sealing material 20 applied by the nozzle tip 301 at the first point application point P1 and the second point application point P2 has a large gap between the blade support plate 23 supporting the blade 22 and the peripheral portion B, and Since the shape of the gap is complicated, it is applied to be applied to a place where the sealing material is difficult to be applied. The dotted application process of the sealing material 20 described above is an example of the dotted application process referred to in the present invention.

  In the sealing material application method described above, after the sealing material 20 is uniformly applied to the peripheral portion, a point-like shape is formed at a location where the gap between the opposing members is large or a location where the sealing material 20 is difficult to go around. The sealing material 20 is additionally applied to compensate for the shortage. For this reason, sealing performance is easily ensured.

  Further, in this sealing material application method, the vibration sensor 40 is attached to the nozzle unit 300, and the mechanism will be described later even if the sealing material 20 is blown when the sealing material 20 is applied in a dot shape. The nozzle tip 301 stays in place, and the dot-like sealing material 20 is applied again. The process of detecting the occurrence of this idling by the vibration sensor 40 corresponds to an example of the failure detection process according to the present invention. The cleaning frame 21 corresponds to an example of the first member according to the present invention, and the combination of the blade 22 and the blade support plate 23 corresponds to an example of the second member according to the present invention.

  FIG. 11 is a flowchart of a program executed when this sealing material application method is carried out.

  FIG. 11 shows a flowchart of a routine executed in the aforementioned automatic sealing material application system. Note that the start point, the via point, the end point, and the point application point shown in FIGS. 9 and 10 are relative to the home position of the nozzle tip 301, and the relative three-dimensional positions between the points. The discussion proceeds with the coordinate position already registered.

  In step S1 shown in FIG. 11, in response to a signal to start the sealing material application work, the nozzle tip 301 of the nozzle unit 300 is moved from a specific home position to the first start point S1. In step S2, after the nozzle tip 301 reaches the first start point S1, the nozzle unit 300 is instructed to start discharging the sealing material 20, and the nozzle tip 301 has a first end point D1 to a first end point D1. Instruct to move towards. In step S <b> 3, after the nozzle tip 301 reaches the first end point D <b> 1, the nozzle unit 300 is instructed to stop discharging the sealing material 20. In step S4, the nozzle tip 301 that has reached the first end point D1 is instructed to move from the first end point D1 to the second start point S2 via the first via point V1, the second via point V2, and the third via point V3. . In step S5, while waiting for the nozzle tip 301 to reach the second start point S2, the nozzle unit 300 is instructed to start discharging the sealing material 20, and the nozzle tip 301 is moved from the second start point S2 to the second end point D2. Instructs the intended movement. In step S <b> 6, the nozzle end 300 is instructed to stop discharging the sealing material after reaching the second end point D <b> 1 of the nozzle tip 301. In step S7, the nozzle tip 301 that has reached the second end point D2 is instructed to move from the second end point D2 to the third start point S3 via the fourth route point V4, the fifth route point V5, and the sixth route point. . In step S8, while waiting for the nozzle tip 301 to reach the third start point S3, the nozzle unit 300 is instructed to start discharging the sealing material 20, and the nozzle tip 301 is moved from the third start point S3 to the third end point D3. Instructs the intended movement. In step S <b> 9, the nozzle unit 300 is instructed to stop discharging the sealing material 20 after reaching the third end point D <b> 3 of the nozzle tip 301. In step S10, the nozzle tip 301 that has reached the third end point D3 is moved from the third end point D3 to the first point application point P1 via the seventh via point V7 and the eighth via point V8 shown in FIG. Instruct. In step S11, after reaching the first point application point P1 of the nozzle tip 301, the nozzle unit 300 is instructed to start discharging the sealing material 20. In step S12, it is determined whether or not a preset time has elapsed for dot application of the sealing material 20, and after waiting for the time to elapse, in step S13, the sealing material 20 is applied to the nozzle unit 300. Instruct to stop discharging. In step S14, it is confirmed by determining the time recorded in the above-mentioned memory whether or not vibration due to idle driving is detected by the vibration sensor 40 during the elapse of time in step S12. If the idle vibration has been detected, the process returns to step S11. If the idle vibration has not been detected, the process proceeds to step S15 to move from the first point application point P1 to the second point application point P2. Instruct. In step S16, after the nozzle tip 301 reaches the second point application point P2, the nozzle unit 300 is instructed to start discharging the sealing material 20. In step S17, it is determined whether or not the time required for the dot application of the sealing material 20 has elapsed. After the time has elapsed, in step S18, the nozzle unit 300 is instructed to stop discharging the sealing material 20. The In step S19, it is determined whether or not vibration due to idle driving has been detected during the elapse of this time. If vibration due to idle driving has been detected, the process returns to step S16, and if not detected, the process returns to step S20. move on. Steps S20 to S29 are application processes to the third point application point P3 and the fourth point application point P4, which are application positions of the dot-shaped sealing material on the peripheral portion C, and from step S10 to step S19. Since it is the same content, description is abbreviate | omitted. By the program control as described above, in the automatic sealant coating system, linear coating and dot coating are performed on the cleaning frame 21.

  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.

DESCRIPTION OF SYMBOLS 1 Image forming apparatus 2 Cleaning apparatus 21 Cleaning frame body 22 Blade 23 Blade support plate 300 Nozzle tip 301 Nozzle part 40 Vibration sensor

Claims (5)

A linear coating process in which a liquid material is applied in a liquid state and has elasticity even when cured, and a liquid material whose shape changes by an external force is linearly applied;
A liquid material application characterized by having a dot application process in which the liquid material is applied in the form of dots before or after the linear application process on a line to which the liquid material is applied in the linear application process Method. The member sandwiches the applied liquid material between another member and seals the gap between the member with the liquid material, and the gap between the member and the other member. The spacing is uneven,
2. The liquid material application method according to claim 1, wherein the dot application process is a process in which the liquid material is applied to a part of the line on which the gap is wider than the other part. Having a failure detection process of detecting whether the dotted application in the dotted application process has failed,
The liquid material application method according to claim 1, wherein the dot application process is a process of redoing a dot application when a failure is detected in the failure detection process. A first member;
A linear material formed by applying a liquid material, which is applied in a liquid form, has elasticity even when cured, and changes its shape by an external force to the first member;
On the line on which the linear object is formed, before or after the linear object is formed, the pointed object formed by applying the liquid material in the form of dots; and
A gap between the linear member and the dotted object is sandwiched between the first member, and a gap between the first member and the second member is sealed with the linear object and the dotted object. A sealing structure characterized by that.   5. A cleaning apparatus having a sealing structure according to claim 4, wherein deposits on the surface of the object to be cleaned are removed and accommodated in the sealing structure, and leakage of the deposits is prevented by the blocking structure.

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