CN111071738A - Cleaning device, ink jet image recording apparatus, and cleaning condition changing method - Google Patents
Cleaning device, ink jet image recording apparatus, and cleaning condition changing method Download PDFInfo
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- CN111071738A CN111071738A CN201910968430.5A CN201910968430A CN111071738A CN 111071738 A CN111071738 A CN 111071738A CN 201910968430 A CN201910968430 A CN 201910968430A CN 111071738 A CN111071738 A CN 111071738A
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- Prior art keywords
- cleaning
- conveyor belt
- belt
- condition
- cleaning device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/10—Cleaning devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/17—Cleaning arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/10—Cleaning devices
- B65G45/12—Cleaning devices comprising scrapers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/10—Cleaning devices
- B65G45/18—Cleaning devices comprising brushes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/10—Cleaning devices
- B65G45/22—Cleaning devices comprising fluid applying means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/10—Cleaning devices
- B65G45/24—Cleaning devices comprising plural diverse cleaning devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
- B65G2203/0266—Control or detection relating to the load carrier(s)
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Ink Jet (AREA)
- Cleaning In Electrography (AREA)
- Cleaning In General (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Abstract
Provided are a cleaning device capable of appropriately cleaning the surface of a conveyor belt, an inkjet recording device, and a method for changing the cleaning conditions of the belt cleaning device. A cleaning device, comprising: a cleaning unit that cleans the surface of a transport belt that transports a recording medium while rotating; a surface state detection unit that detects a surface state of the conveyor belt; and a cleaning condition changing unit that changes a cleaning condition of the cleaning unit based on the detected surface state.
Description
Technical Field
The invention relates to a cleaning device, an ink jet image recording apparatus, and a cleaning condition changing method for a belt cleaning device.
Background
In recent years, as an apparatus for recording high-definition images on various recording media such as paper and cloth, an image recording apparatus based on an ink jet system has been widely used. In particular, when the recording medium is in the form of a long web, the recording medium is conveyed while being brought into close contact with a conveyor belt by using a belt conveyor device having an endless conveyor belt (see, for example, patent document 1).
However, depending on the type of recording medium used, contaminants such as paper dust, lint, and pretreatment agents may adhere to the conveyor belt, and these contaminants may be mixed with ink on the conveyor belt and adhere as foreign matter. Here, when the foreign matter adhering to the transport belt is disregarded, there occur problems such as the foreign matter adhering to the back surface of the newly supplied recording medium to degrade the product quality, or the friction between the transport belt and the recording medium affecting the transport of the recording medium to be unstable.
In order to prevent such a problem, in general, an ink jet image recording apparatus having a conveyor belt as described above is provided with a belt cleaning device for cleaning foreign matter adhering to the surface of the conveyor belt.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2012 and 116617
Disclosure of Invention
Problems to be solved by the invention
In recent years, a higher recording speed has been demanded, and further improvement in cleaning performance of a cleaning member has been demanded. However, the conventional belt cleaning device described in patent document 1 has a problem that the cleaning performance cannot be kept up with the increase in the conveying speed of the conveyor belt, and the surface of the conveyor belt cannot be properly cleaned completely.
An object of the present invention is to provide a cleaning device, an inkjet recording device, and a cleaning condition changing method for a belt cleaning device, which can appropriately clean the surface of a conveyor belt.
Means for solving the problems
The cleaning device of the present invention comprises:
a cleaning unit that cleans the surface of a transport belt that transports a recording medium while rotating;
a surface state detection unit that detects a surface state of the conveyor belt; and
and a cleaning condition changing unit that changes a cleaning condition of the cleaning unit based on the detected surface state.
The ink jet image recording apparatus of the present invention includes:
the above cleaning device;
the conveying belt; and
and a recording head that ejects ink onto the recording medium conveyed by the conveyor belt to record an image.
The cleaning condition changing method of the belt cleaning device of the invention is
A cleaning condition changing method of a belt cleaning device for cleaning the surface of a conveying belt which conveys a recording medium while rotating,
the surface state of the conveyor belt is acquired,
changing a cleaning condition of the belt cleaning device based on the acquired surface state.
Effects of the invention
According to the present invention, the surface of the conveyor belt can be properly cleaned.
Drawings
Fig. 1 is a diagram showing a schematic configuration of an inkjet recording apparatus according to the present embodiment.
Fig. 2 is a block diagram showing a main functional configuration of the inkjet recording apparatus according to the present embodiment.
Fig. 3 is a control flowchart showing an example of an operation of changing the cleaning conditions of the belt cleaning device in the present embodiment.
Detailed Description
Fig. 1 is a diagram showing a schematic configuration of an inkjet recording apparatus 1 according to the present embodiment. As shown in fig. 1, the inkjet recording apparatus 1 includes a belt conveying device 2, a recording head 3, a belt cleaning device 4, and a surface state detecting portion 5. The belt cleaning device 4 functions as a "cleaning unit" of the present invention.
The belt conveyor 2 is provided with an endless conveyor belt 23 having a predetermined width, and the conveyor belt 23 spans a drive roller 21 and a driven roller 22 arranged in parallel with a predetermined gap therebetween. The upper surface of the conveyor belt 23 stretched over the drive roller 21 and the driven roller 22 serves as a mounting surface on which the recording medium P is mounted in close contact. In addition, an adhesive called a primer is applied to the surface of the conveyor belt 23 so that the recording medium P being conveyed is in close contact with the upper surface of the conveyor belt 23. The drive roller 21 is driven by a sub-scanning motor, not shown.
In the belt conveying apparatus 2, the drive roller 21 is rotated at a predetermined speed in a counterclockwise direction (see an arrow) in fig. 1 by the rotational driving of the sub-scanning motor, and the conveying belt 23 stretched between the drive roller and the driven roller 22 is rotationally moved. By this operation, the recording medium P placed on the upper surface of the conveyor belt 23 is conveyed in the sub-scanning direction, i.e., the direction of arrow a in the drawing.
As the recording medium P, for example, a recording medium generally used for ink jet recording, such as paper, cloth, plastic film, or glass plate, can be used. The recording medium P may be a sheet cut into a predetermined size, or may be a long sheet continuously fed from a raw roll wound in a roll shape. In particular, since the fabric is likely to generate lint and the like, and the lint and the like are likely to adhere to the surface of the conveyor belt 23, the fabric can be suitably used as the recording medium P because a particularly significant effect can be obtained by providing the belt cleaning device 4 described later.
The recording head 3 (also referred to as an ink jet head) is disposed above a surface of the conveyor belt 23 on which the recording medium P is placed, with a predetermined interval therebetween, and ejects ink droplets from a plurality of nozzles provided on a lower surface thereof, thereby recording a desired image on the recording medium P conveyed by the rotational movement of the conveyor belt 23.
In the present embodiment, the recording head 3 is a shuttle (shuttle) type recording head mounted on a carriage (not shown) and reciprocating in a main scanning direction perpendicular to a conveying direction of the intermittently conveyed recording medium P. In this case, at the time of recording, the driving of the driving roller 21 is controlled so that the conveyance belt 23 repeats intermittent operations of a standby state and a driving state.
The recording head 3 may be a linear type recording head which is fixed across the width direction of the transport belt 23 and records an image by ejecting ink droplets onto the continuously transported recording medium P. In this case, at the time of recording, the driving of the driving roller 21 is controlled so that the conveying belt 23 continuously moves (rotates).
The belt cleaning device 4 is provided on the belt conveying device 2, and is disposed near the drive roller 21 in the present embodiment. The belt cleaning device 4 is provided with a plurality of cleaning apparatuses in order in the moving direction of the conveying belt 23. Here, as the cleaning device, a water spray pipe (water spray pipe)41, a brush roller (brush roller)42, a cleaning blade (cleaning blade)43, and a water absorption roller (water absorption roller)44 are provided in this order. The shower pipe 41 also functions as a "cleaning liquid supply unit" in the present invention.
The water spray pipe 41 is provided across the entire width of the conveyor belt 23, and a plurality of nozzles (not shown) are arranged in the longitudinal direction at positions facing the surface of the conveyor belt 23. The cleaning liquid is supplied to the water spray pipe 41 through the water spray pipe 41b by driving the water spray pump 41a, and the supplied cleaning liquid is sprayed from the nozzles onto the surface of the conveyor belt 23, thereby cleaning the foreign matter adhering to the surface of the conveyor belt 23.
The brush roller 42 is formed in a roller shape by burying a plurality of brush bundles in which brush bristles are bundled around a rotating shaft extending over the entire width of the conveyor belt 23. The tip of the brush bundle is always in contact with the surface of the conveyor belt 23 on the downstream side of the water spraying position of the water spray pipe 41 in the moving direction of the conveyor belt 23.
The brush roller 42 rotates at a predetermined speed in the same direction as the rotation direction of the drive roller 21 based on the power of the brush drive unit 160 (drive motor, see fig. 2), moves in the direction opposite to the movement direction of the conveyor belt 23, and wipes the surface of the conveyor belt 23 with the tip of the brush bundle. By this operation, the brush roller 42 removes foreign matters washed by the water sprayed by the washing liquid sprayed from the water spray pipe 41 on the upstream side in the moving direction of the conveyor belt 23.
A cleaning tub 45 for storing a cleaning liquid is disposed below the brush roller 42. The lower portion of the brush roller 42 is partially immersed in the washing liquid, scraping off the washing liquid while rotating, thereby improving the removal effect of foreign substances. The cleaning liquid in the cleaning tub 45 is supplied to the cleaning liquid in the sprinkling pipe 41 through a sprinkling pipe (water spray tube)41b, and the cleaning liquid dropped by spraying onto the surface of the conveyor belt 23 is again stored in the cleaning tub 45 and reused.
The cleaning blade 43 is formed in a flat plate shape by an elastic material such as rubber, a PET sheet, a linear brush, or the like, and is stretched over the entire width of the conveyor belt 23. The cleaning blade 43 is attached to the edge of the cleaning bucket 45 on the downstream side of the brush roller 42 in the moving direction of the conveyor belt 23 so that the leading end thereof always abuts on the surface of the conveyor belt 23. The cleaning blade 43 removes the cleaning liquid containing the contaminants attached to the surface of the conveyor belt 23 by scraping the cleaning liquid with the water spray pipe 41 and the brush roller 42 on the upstream side in the moving direction of the conveyor belt 23 by the rotational movement of the conveyor belt 23. The removed washing liquid flows down the surface of the cleaning blade 43 and is contained in the cleaning bucket 45.
The water suction roller 44 is formed in a roller shape by winding a porous material having water absorption property such as sponge around a rotation shaft extending over the entire width of the conveyor belt 23. The surface of the water suction roller 44 is in contact with the surface of the conveying belt 23 at all times on the downstream side of the cleaning blade 43 in the moving direction of the conveying belt 23. The water suction roller 44 is rotated in the same direction as the rotation direction of the conveyor belt 23 at a predetermined speed by a driving unit (driving motor), not shown, or is rotated by being driven by the rotation of the conveyor belt 23, and absorbs and wipes off the cleaning liquid containing the contaminants adhering to and remaining on the surface of the conveyor belt 23, thereby removing the contaminants.
A cleaning bucket 46 independent of the cleaning bucket 45 of the brush roller 42 is disposed below the water suction roller 44. The lower part of the water suction roller 44 is partially immersed in the cleaning liquid in the cleaning tub 46, and the contaminants absorbed on the surface are washed by the immersion, and pressed by the pressing roller 44a provided immediately before the contact with the conveyor belt 23, thereby preparing for the next water suction. The pressing roller 44a adjusts the pressing amount according to the moisture on the surface of the conveying belt 23.
The surface state detecting portion 5 is provided on the downstream side of the belt cleaning device 4 and on the upstream side of the driven roller 22 in the moving direction of the conveying belt 23. In the present embodiment, the surface condition detection unit 5 detects the surface condition of the conveyor belt 23 cleaned by the belt cleaning device 4.
The surface condition detecting unit 5 includes, for example, a water content detecting unit, and detects a remaining condition (for example, an amount of the washing liquid) of the washing liquid remaining on the surface of the conveyor belt 23 as the surface condition of the conveyor belt 23. As a detection device using the water content (amount of the cleaning solution) of the water content detection unit, a known device such as a resistance system, a capacitance system, an infrared system, or a microwave system can be used.
In the resistance method, the amount of the washing liquid (water content) on the surface of the conveyor belt 23 can be detected by measuring the resistance value between a plurality of electrodes provided at both ends in the width direction of the conveyor belt 23. In the infrared system, a light source for irradiating near infrared rays toward the surface of the conveyor belt 23 and a light receiving unit for receiving light reflected by the cleaning liquid on the surface of the conveyor belt 23 are provided, and the amount of the cleaning liquid (water content) on the surface of the conveyor belt 23 can be detected using the difference between the wavelength at which the reflectance with respect to the cleaning liquid (water content) is completely unchanged and the wavelength attenuated by the cleaning liquid.
The surface condition detecting unit 5 includes, for example, a monitoring camera, and detects a remaining condition of foreign matter (for example, an amount of foreign matter) remaining on the surface of the conveyor belt 23 as the surface condition of the conveyor belt 23. By using a known pattern matching process, the state of foreign matter (for example, lint) remaining on the surface of the conveyor belt 23 can be detected from a captured image obtained by capturing the surface of the conveyor belt 23 by a monitoring camera.
Fig. 2 is a block diagram showing a main functional configuration of the inkjet recording apparatus 1. The inkjet recording apparatus 1 includes a control unit 100, a head drive unit 110, a transport drive unit 120, an input/output interface 130, a blade pressure contact partition 140, a suction roller pressure contact partition 150, a brush drive unit 160, a brush pressure contact partition 170, a water spray pump drive unit 180, and a warning notification unit 190. The control unit 100 also functions as a "cleaning condition changing unit" according to the present invention. The conveyance drive unit 120 functions as a "conveyance stop unit" according to the present invention.
The control Unit 100 includes a CPU101(Central Processing Unit), a RAM102(Random Access Memory), a ROM103(Read Only Memory), and a storage Unit 104.
The CPU101 reads various control programs and setting data stored in the ROM103, stores the programs and setting data in the RAM102, and executes the programs to perform various arithmetic processes. The CPU101 also controls the overall operation of the inkjet recording apparatus 1.
The RAM102 provides the CPU101 with a memory space for work, and temporarily stores data. The RAM102 may include a nonvolatile memory.
The ROM103 stores various control programs, setting data, and the like executed by the CPU 101. Instead of the ROM103, an Erasable nonvolatile Memory such as an EEPROM (Electrically Erasable Programmable Read Only Memory) or a flash Memory may be used.
The storage unit 104 stores a print job (image recording command) input from the external device 6 via the input/output interface 130 and image data related to the print job. As the storage unit 104, for example, an HDD (Hard disk drive) may be used, or a DRAM (Dynamic Random Access Memory) or the like may be used in combination.
The head driving unit 110 supplies a driving signal corresponding to the image data to the recording head 3 at an appropriate timing based on the control of the control unit 100, and discharges an amount of ink corresponding to the pixel value of the image data from the nozzles of the recording head 3.
The conveyance driving unit 120 supplies a driving signal to the sub-scanning motor of the driving roller 21 based on the control of the control unit 100, and rotates and moves the conveyance belt 23 at a predetermined speed and timing.
The input/output interface 130 mediates transmission/reception of data between the external device 6 and the control unit 100. The input/output interface 130 is constituted by any one of various serial interfaces, various parallel interfaces, or a combination thereof, for example.
The external device 6 is, for example, a personal computer, and supplies an image recording command (print job), image data, and the like to the control section 100 via the input/output interface 130.
The blade pressure contact partitioning unit 140 performs the pressure contact operation and the partitioning operation of the cleaning blade 43 with respect to the surface of the conveyor belt 23 based on the control of the control unit 100, and controls the cleaning nip amount formed by the contact of the surface of the conveyor belt 23 with the cleaning blade 43.
The water suction roller pressure-contact partitioning unit 150 controls the amount of pressure (pressing amount) of the water suction roller 44 against the surface of the conveyor belt 23 by performing the pressure-contact operation and the partitioning operation of the water suction roller 44 against the surface of the conveyor belt 23 based on the control of the control unit 100.
The brush press-contact partitioning portion 170 performs the press-contact operation and the partitioning operation of the brush roller 42 with respect to the surface of the conveyor belt 23 based on the control of the control portion 100, thereby controlling the cleaning nip amount formed by the contact of the surface of the conveyor belt 23 with the brush roller 42.
The sprinkler pump drive unit 180 controls the supply pressure (water pressure) of the cleaning liquid supplied from the sprinkler pipe 41 by changing the drive mode of the sprinkler pump 41a based on the control of the control unit 100.
The warning notification unit 190 notifies a warning based on the surface state of the conveyor belt 23 detected by the surface state detection unit 5, based on the control of the control unit 100. The warning notification unit 190 notifies the user of a warning by displaying a warning screen on a display unit (not shown), for example.
In the present embodiment, in order to solve the problem described in the "problem to be solved by the invention", that is, in the conventional belt cleaning device, there is a problem that the cleaning performance cannot catch up with the increase in the conveying speed of the conveyor belt and there is a possibility that the surface of the conveyor belt cannot be properly and completely cleaned, the control unit 100 performs control to change the cleaning condition of the belt cleaning device 4 in accordance with the surface state of the conveyor belt 23 detected by the surface state detecting unit 5.
Fig. 3 is a control flowchart of an operation example of changing the cleaning condition of the belt cleaning device 4 in the present embodiment. Each process in fig. 3 is executed at predetermined time intervals after a print job for recording a desired image on the recording medium P is requested to be executed.
First, the control unit 100 acquires the surface state of the conveyor belt 23 detected by the surface state detection unit 5 (step S100). Next, the control unit 100 determines whether or not it is necessary to change the cleaning conditions of the belt cleaning device 4 to properly clean the surface of the conveyor belt 23 based on the surface state of the conveyor belt 23 (step S120).
When the amount of the cleaning liquid or the foreign matter adhering to the surface of the conveyor belt 23 is significantly larger than the surface state of the conveyor belt 23 detected at the previous time, the control unit 100 determines that the cleaning condition of the belt cleaning device 4 needs to be changed. On the other hand, when the amount of the cleaning liquid or the foreign matter adhering to the surface of the conveyor belt 23 is not significantly increased as compared with the surface state of the conveyor belt 23 detected at the previous time, the control unit 100 determines that the cleaning condition of the belt cleaning device 4 does not need to be changed.
If the determination result is that the cleaning condition of the belt cleaning device 4 does not need to be changed (no in step S120), the control unit 100 ends the processing in fig. 3. On the other hand, when the cleaning condition of the belt cleaning device 4 needs to be changed (yes in step S120), the control unit 100 determines whether or not the cleaning condition can be appropriately changed based on the surface state of the conveyor belt 23 detected by the surface state detecting unit 5 (step S140).
The control unit 100 determines that the cleaning condition can be appropriately cleaned by changing the cleaning condition when the amount of the residual cleaning liquid or foreign matter adhering to the surface of the conveyor belt 23 is not excessive and the cleaning performance after changing the cleaning condition is kept up to standard. On the other hand, when the amount of the residual cleaning liquid or foreign matter adhering to the surface of the conveyor belt 23 is too large and the cleaning performance after the change of the cleaning condition cannot be kept up to the standard, the control unit 100 determines that the cleaning condition cannot be appropriately changed. The criterion for determining whether or not the cleaning performance after the change of the cleaning condition is satisfied is determined by, for example, an evaluation experiment performed in advance on the cleaning performance of the belt cleaning device 4.
If it is determined that the cleaning condition is actually in a state where the belt cleaning device can be properly cleaned (yes in step S140), the control unit 100 performs control to change the cleaning condition of the belt cleaning device 4 (step S160).
Specifically, the control unit 100 changes the cleaning nip amount formed by the contact of the surface of the conveyor belt 23 with the cleaning blade 43 according to the surface state of the conveyor belt 23 (particularly, the residual state of the cleaning liquid remaining on the surface of the conveyor belt 23). For example, the control unit 100 controls the blade pressure contact partition 140 so that the cleaning nip amount formed by the contact of the surface of the conveyor belt 23 with the cleaning blade 43 is increased as compared with the case where the amount of the cleaning liquid remaining on the surface of the conveyor belt 23 is small. Thereby, the cleaning performance of the cleaning liquid by the cleaning blade 43 is improved.
The control unit 100 changes the amount of pressing of the water suction roller 44 against the surface of the conveyor belt 23 in accordance with the surface state of the conveyor belt 23 (particularly, the remaining state of the cleaning solution remaining on the surface of the conveyor belt 23). For example, when the amount of the cleaning liquid remaining on the surface of the conveyor belt 23 is large, the control unit 100 controls the water suction roller pressure contact partition 150 so that the amount of pressure applied to the water suction roller 44 on the surface of the conveyor belt 23 is increased as compared with the case where the amount of the cleaning liquid is small. This improves the cleaning performance of the cleaning liquid by the water suction roller 44.
As described above, by controlling the cleaning nip amount formed by the contact of the surface of the conveyor belt 23 with the cleaning blade 43 or the pressing amount of the water suction roller 44 against the surface of the conveyor belt 23, the cleaning performance of the cleaning liquid is improved, and even if the conveying speed of the conveyor belt 23 is increased, the cleaning liquid remaining on the surface of the conveyor belt 23 can be properly cleaned.
Further, the control unit 100 changes the rotation speed of the brush roller 42 according to the surface state of the conveyor belt 23 (particularly, the remaining state of the foreign matter remaining on the surface of the conveyor belt 23). For example, when the amount of foreign matter remaining on the surface of the conveyor belt 23 is large, the control unit 100 controls the brush driving unit 160 so that the rotation speed of the brush roller 42 is increased as compared to the case where the amount of foreign matter is small. Thereby, the cleaning performance of the foreign matter by the brush roller 42 is improved.
Further, the control unit 100 changes the cleaning nip amount formed by the contact of the surface of the conveyor belt 23 with the brush roller 42 according to the surface state of the conveyor belt 23 (particularly, the remaining state of the foreign matter remaining on the surface of the conveyor belt 23). For example, the control portion 100 controls the brush press-contact partitioning portion 170 in a case where the amount of the foreign matter remaining on the surface of the conveyor belt 23 is large, so that the cleaning nip amount formed by the surface of the conveyor belt 23 contacting the brush roller 42 is increased as compared with a case where the amount of the foreign matter is small. Thereby, the cleaning performance of the foreign matter by the brush roller 42 is improved.
The control unit 100 changes the supply pressure of the cleaning liquid supplied from the sprinkling pipe 41 in accordance with the surface state of the conveyor belt 23 (particularly, the remaining state of the foreign matter remaining on the surface of the conveyor belt 23). For example, when the amount of foreign matter remaining on the surface of the conveyor belt 23 is large, the control unit 100 controls the spray pump driving unit 180 so that the supply pressure of the cleaning liquid supplied from the spray pipe 41 is increased as compared with the case where the amount of foreign matter is small. Thereby, the cleaning performance of the foreign matter by the brush roller 42 is improved.
As described above, by controlling the rotation speed of the brush roller 42, the cleaning nip amount formed by the contact of the surface of the conveyor belt 23 with the brush roller 42, or the supply pressure of the cleaning liquid supplied from the shower pipe 41, the cleaning performance of the foreign matter is improved, and the foreign matter (particularly lint) remaining on the surface of the conveyor belt 23 can be appropriately cleaned even if the conveying speed of the conveyor belt 23 is increased.
By ending the processing in step S160, control unit 100 ends the processing in fig. 3.
Returning to the determination processing in step S140, if the cleaning condition is not changed to a state in which cleaning is properly enabled (no in step S140), the control unit 100 controls the conveyance drive unit 120 to stop the conveyance operation of the recording medium P (step S180). Next, the control unit 100 controls the warning notification unit 190 to notify a warning that the cleaning condition is not changed to a state in which cleaning is properly enabled. By ending the processing in step S200, control unit 100 ends the processing in fig. 3.
As described above in detail, the belt cleaning device in the present embodiment includes a cleaning unit (belt cleaning device 4) that cleans the surface of the transport belt 23 that transports the recording medium P while rotating, a surface state detection unit 5 that detects the surface state of the transport belt 23, and a cleaning condition changing unit (control unit 100) that changes the cleaning condition of the cleaning unit according to the detected surface state.
According to the present embodiment configured as described above, the cleaning conditions of the cleaning unit (belt cleaning device 4) are automatically changed according to the surface state of the conveyor belt 23 reflecting the remaining state of the cleaning liquid or foreign matter remaining on the surface of the conveyor belt 23. Therefore, the cleaning performance of the cleaning liquid or foreign matter remaining on the surface of the conveyor belt 23 is improved, and even if the conveying speed of the conveyor belt 23 is increased, the surface of the conveyor belt 23 can be properly cleaned. Further, it is possible to prevent problems such as the cleaning liquid or foreign matter adhering to the conveyor belt 23 adhering to the back surface of the newly supplied recording medium P to degrade the product quality, or the friction between the conveyor belt 23 and the recording medium P affecting the conveyance of the recording medium P to be unstable. In short, since the cleaning condition is automatically changed according to the surface state of the conveyor belt 23, the procedure for the user to manually change the cleaning condition can be eliminated.
In the present embodiment, when the cleaning condition is not changed to a state in which the recording medium P can be properly cleaned, the control unit 100 controls the conveyance driving unit 120 to stop the conveyance operation of the recording medium P. With this configuration, even if the cleaning conditions are changed, if the recording medium P is not properly cleaned, it is possible to reliably prevent the cleaning liquid or foreign matter adhering to the conveyor belt 23 from adhering to the back surface of the newly supplied recording medium P and further degrading the product quality or making the conveyance of the recording medium P unstable, due to the forcible continuation of the conveyance operation of the recording medium P. Further, when the cleaning condition is not changed to a state where cleaning is properly enabled, the control unit 100 controls the warning notification unit 190 to notify a warning. With this configuration, the user can grasp that the cleaning condition is not changed to a state in which the cleaning apparatus can be properly cleaned, and can be prompted to consider an alternative policy such as replacement of each cleaning device constituting the belt cleaning device 4.
In the above-described embodiment, the surface condition detection unit 5 has been described as an example of detecting the surface condition of the conveyor belt 23 cleaned by the belt cleaning device 4, but the present invention is not limited to this. For example, the surface condition detection unit 5 may detect the surface condition of the conveyor belt 23 cleaned by the belt cleaning device 4.
In addition, the above embodiments are merely examples embodied in carrying out the present invention, and the technical scope of the present invention should not be construed as being limited thereto. That is, the present invention can be implemented in various forms without departing from the spirit or main features thereof.
Description of the reference symbols
1 ink jet image forming apparatus
2-belt conveying device
21 drive roller
22 driven roller
23 conveyor belt
3 recording head
4-belt cleaning device
5 surface State detection section
6 external device
41 watering pipeline
41a watering pump
41b sprinkler tube
42 brush roll
43 cleaning blade
44 suction roll
44a squeeze roll
45,46 cleaning barrel
100 control part
101CPU
102 RAM
103 ROM
104 storage part
110 recording head driving part
120 conveying driving part
130 input/output interface
140 blade crimp divider
150 suction roll crimping partition
160 brush driving part
170 brush press-connection partition part
180 sprinkling pump driving part
190 warning notification unit
P recording medium
Claims (23)
1. A cleaning device, comprising:
a cleaning unit that cleans the surface of a transport belt that transports a recording medium while rotating;
a surface state detection unit that detects a surface state of the conveyor belt; and
and a cleaning condition changing unit that changes a cleaning condition of the cleaning unit based on the detected surface state.
2. The cleaning device as set forth in claim 1,
the surface condition detection unit detects a remaining condition of the cleaning solution remaining on the surface of the conveyor belt as a surface condition of the conveyor belt.
3. The cleaning device as set forth in claim 2,
the cleaning section has a cleaning blade that comes into contact with the surface of the conveyor belt to remove the cleaning liquid supplied to the surface of the conveyor belt,
the cleaning condition changing unit changes a cleaning nip amount formed by the surface of the conveyor belt being in contact with the cleaning blade as the cleaning condition.
4. The cleaning device as set forth in claim 2,
the cleaning section has a water suction roller that comes into contact with the surface of the conveyor belt and sucks the washing liquid remaining on the surface of the conveyor belt,
the cleaning condition changing unit changes an amount of the water suction roller pressing the surface of the conveyor belt as the cleaning condition.
5. The cleaning device as set forth in claim 1,
the surface condition detection unit detects a remaining condition of foreign matter remaining on a surface of the conveyor belt as a surface condition of the conveyor belt.
6. The cleaning device as set forth in claim 5,
the cleaning part has a brush roller rotatably contacting a surface of the conveyor belt to remove the foreign matter remaining on the surface of the conveyor belt,
the cleaning condition changing unit changes a rotation speed of the brush roller as the cleaning condition.
7. The cleaning device as set forth in claim 5,
the cleaning part has a brush roller that comes into contact with the surface of the conveyor belt to remove the foreign matter remaining on the surface of the conveyor belt,
the cleaning condition changing unit changes a cleaning kneading amount formed by the surface of the conveyor belt being in contact with the brush roller as the cleaning condition.
8. The cleaning device as set forth in claim 5,
the cleaning part is provided with a washing liquid supply part for supplying washing liquid to the surface of the conveying belt,
the cleaning condition changing unit changes a supply pressure of the cleaning liquid supplied from the cleaning liquid supply unit as the cleaning condition.
9. The cleaning device of any one of claims 1 to 8,
the surface state detection unit is provided downstream of the cleaning unit in a moving direction of the conveyor belt, and detects a surface state of the conveyor belt cleaned by the cleaning unit.
10. The cleaning apparatus of any one of claims 1 to 9, comprising:
and a conveyance stop unit that stops the conveyance operation of the recording medium based on the detected surface state.
11. The cleaning apparatus of any one of claims 1 to 10, comprising:
and a warning notification unit configured to notify a warning based on the detected surface state.
12. An inkjet image recording apparatus comprising:
the cleaning device of any one of claims 1 to 11;
the conveying belt; and
and a recording head that ejects ink onto the recording medium conveyed by the conveyor belt to record an image.
13. A cleaning condition changing method of a belt cleaning device for cleaning the surface of a transport belt which transports a recording medium while rotating,
the surface state of the conveyor belt is acquired,
changing a cleaning condition of the belt cleaning device based on the acquired surface state.
14. The cleaning condition changing method of a belt cleaning device according to claim 13,
as the surface state of the conveyor belt, a residual state of the washing liquid remaining on the surface of the conveyor belt is acquired.
15. The cleaning condition changing method of a belt cleaning device according to claim 14,
the cleaning device has a cleaning blade that comes into contact with the surface of the conveyor belt to remove the cleaning liquid supplied to the surface of the conveyor belt,
the cleaning condition is a condition in which a cleaning kneading amount formed by the surface of the conveyor belt being brought into contact with the cleaning blade is changed.
16. The cleaning condition changing method of a belt cleaning device according to claim 14,
the cleaning device has a water suction roller that comes into contact with the surface of the conveyor belt to suck the washing liquid remaining on the surface of the conveyor belt,
the amount of the water suction roller pressing the surface of the conveyor belt is changed as the cleaning condition.
17. The cleaning condition changing method of a belt cleaning device according to claim 13,
the remaining state of the foreign matter remaining on the surface of the conveyor belt is acquired as the surface state of the conveyor belt.
18. The cleaning condition changing method of a belt cleaning device according to claim 17,
the cleaning device has a brush roller rotatably contacting a surface of the conveyor belt to remove the foreign matter remaining on the surface of the conveyor belt,
the rotation speed of the brush roller is changed as the cleaning condition.
19. The cleaning condition changing method of a belt cleaning device according to claim 17,
the cleaning device has a brush roller that comes into contact with the surface of the conveyor belt to remove the foreign matter remaining on the surface of the conveyor belt,
the cleaning condition is a condition in which a cleaning kneading amount formed by the surface of the conveyor belt being in contact with the brush roller is changed.
20. The cleaning condition changing method of a belt cleaning device according to claim 17,
the cleaning device is provided with a washing liquid supply part for supplying washing liquid to the surface of the conveying belt,
the supply pressure of the cleaning liquid supplied from the cleaning liquid supply unit is changed as the cleaning condition.
21. The cleaning condition changing method of a belt cleaning device as claimed in any one of claims 13 to 20,
detecting a surface state of the conveyor belt after cleaning by the cleaning device.
22. The cleaning condition changing method of a belt cleaning device as claimed in any one of claims 13 to 21,
stopping the conveying action of the recording medium according to the detected surface state.
23. The cleaning condition changing method of a belt cleaning device as claimed in any one of claims 13 to 22,
notifying an alert based on the detected surface condition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018196619A JP7200595B2 (en) | 2018-10-18 | 2018-10-18 | Cleaning device, inkjet image recording device, and method for changing cleaning conditions for belt cleaning device |
| JP2018-196619 | 2018-10-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111071738A true CN111071738A (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910968430.5A Pending CN111071738A (en) | 2018-10-18 | 2019-10-12 | Cleaning device, ink jet image recording apparatus, and cleaning condition changing method |
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| Country | Link |
|---|---|
| JP (1) | JP7200595B2 (en) |
| CN (1) | CN111071738A (en) |
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| JP7200595B2 (en) | 2023-01-10 |
| JP2020063133A (en) | 2020-04-23 |
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Application publication date: 20200428 |