WO2016031478A1

WO2016031478A1 - Image recording device and ventilation adjustment method for same, and air supply adjustment method

Info

Publication number: WO2016031478A1
Application number: PCT/JP2015/071466
Authority: WO
Inventors: 芳幸吉本
Original assignee: 富士フイルム株式会社
Priority date: 2014-08-29
Filing date: 2015-07-29
Publication date: 2016-03-03
Also published as: JPWO2016031478A1; JP6081029B2

Abstract

　Provided are an image recording device whereby the ventilation amount of a plurality of ventilation ports and/or the air supply amount of a plurality of air supply ports provided to the device can easily be adjusted to a specific ventilation amount and/or air supply amount, a ventilation adjustment method for the image recording device, and an air supply adjustment method. An image recording device provided with individual ducts 102A-102D connected to ventilation ports 58a-58d, a shared chamber 104, a shared duct 106, and a blower 120, wherein a ventilation adjustment method for adjusting the ventilation amount from each of the ventilation ports 58a-58d to a specific ventilation amount comprises calculating a regulation amount for airflow of each of the individual ducts 102A-102D necessary for ventilation at a specific ventilation amount from each of the ventilation ports 58a-58d and a set value for the airflow of the shared duct 106, using the individual duct in which the maximum pressure is required as a reference. An airflow valve or an orifice plate is provided to the individual ducts 102A-102D, and airflow is regulated according to the calculated regulation amount. Meanwhile, the airflow of the shared duct 106 is adjusted to the calculated set value by the airflow valve.

Description

Image recording apparatus and its exhaust adjustment method and air supply adjustment method

The present invention relates to an image recording apparatus, an exhaust adjustment method thereof, and an air supply adjustment method. The present invention relates to an image recording apparatus that supplies air by volume, an exhaust adjustment method thereof, and an air supply adjustment method.

In a large image recording apparatus such as an industrial printing machine, exhaust and air supply are performed at various points in the apparatus. It is necessary to manage this exhaust and air supply appropriately for each place. That is, it is necessary to manage the exhaust amount of each exhaust port so that the exhaust amount is determined at each exhaust port. Similarly, it is necessary to manage the air supply amount of each air supply port so that air is supplied with the air supply amount determined for each air supply port.

Conventionally, an air volume adjusting valve was installed in the duct leading to each exhaust port, and the exhaust volume was individually adjusted for each exhaust port using a gauge such as a pressure gauge or an anemometer at the installation location of the apparatus. Similarly, for the air supply, the air supply amount was individually adjusted for each air supply port at the installation location of the apparatus.

In Patent Document 1, in an image recording apparatus including a plurality of ducts that merge, even with a particularly important duct, even if the suction pressure is reduced by installing an on-off valve that opens and closes according to the suction pressure, In addition, a technique for enabling a reduction in exhaust gas flow rate is described.

Japanese Patent Laid-Open No. 2002-023571

However, the method of adjusting the exhaust amount or the air supply amount individually for each exhaust port or each air supply port at the installation destination of the apparatus has a drawback that adjustment takes time.

Moreover, although the technique of patent document 1 can prevent the fall of exhaust flow volume about a specific duct, as a result of adjusting the exhaust flow volume of the specific duct, the exhaust flow volume of other ducts will change, and each exhaust gas will be changed. There is a drawback that it is impossible to exhaust at the exhaust amount required by the mouth. In addition, the duct provided with the opening / closing valve has a drawback that it is difficult to ensure a stable air volume because the opening / closing is a system using a spring.

The present invention has been made in view of the above circumstances, and the exhaust amount of a plurality of exhaust ports and / or the amount of air supply of a plurality of air supply ports provided in the apparatus is simply defined as a predetermined exhaust amount and / or Alternatively, an object of the present invention is to provide an image recording apparatus that can be adjusted to an air supply amount, an exhaust adjustment method thereof, and an air supply adjustment method.

Measures for solving the above problems are as follows.

(1) In an image recording apparatus provided with a plurality of exhaust ports or air supply ports, and the amount of exhaust from each air exhaust port or the amount of air supplied from each air supply port is individually defined, Individual ducts that are individually connected to the mouth and are arranged in a prescribed path, a common chamber to which the individual ducts are commonly connected, a common duct that is connected to the common chamber, and a common duct It is provided in the blower and the common duct, and the air volume in the common duct is adjustable by adjusting the opening, and is provided in at least one individual duct. An air volume valve opening that can adjust the air volume in the duct, and an air volume valve opening setting tool that sets the opening of the individual air volume valve to a predetermined opening for each individual air volume valve. Individual air volume depending on setting tool By adjusting the air volume in the common duct to a predetermined air volume by the common air volume valve, the opening degree of the An image recording apparatus which is exhausted or is supplied with a specified supply amount from an intake port.

According to this aspect, when the opening of each individual air flow valve is set to a predetermined opening using the air flow valve opening setting tool, and the air flow of the common duct is adjusted to a predetermined air flow, A plurality of exhaust ports provided in the apparatus can exhaust air with a specified exhaust amount, or air is supplied with a specified amount of air supply from each air supply port.

個別 Individual ducts connected to each exhaust port or each air supply port are arranged in a prescribed route. That is, the piping path is known and the pressure loss is also known. Therefore, for example, if an individual duct that requires the maximum pressure is used as a reference and the air volume of other individual ducts is adjusted by an individual air volume valve, the adjustment amount of the air volume required for each individual duct, that is, each individual air duct is adjusted. The opening of the air flow valve is uniquely determined. Moreover, if the air volume required for each individual duct is determined, the air volume required for the common duct is also uniquely determined.

This mode uses the fact that the piping path of the individual ducts is known, adjusts the air volume balance between the individual ducts in advance, and allows a certain amount of gas to flow through the common duct. It is characterized in that the exhaust air is exhausted or the air is supplied at a specified air supply amount from each air supply port. And in this aspect, in order to adjust the air volume balance between the individual ducts, an individual air volume valve capable of adjusting the air volume is installed in the individual duct, and the opening degree of each individual air volume valve is set by the air volume valve opening setting tool. It is characterized by doing so. That is, the air volume balance between the individual ducts can be automatically adjusted by setting the opening degree of each individual air volume valve using the air volume valve opening setting tool.

This makes it possible to easily adjust the exhaust amount of each exhaust port or the supply amount of each supply port to a specified exhaust amount or supply amount by simply adjusting the air volume of the common duct. Further, even when the blowing capacity of the blower is changed, it is possible to easily return to the specified exhaust amount or supply amount only by adjusting the air volume of the common duct.

Note that exhaust and air supply are performed separately. That is, exhaust is performed by a system dedicated to exhaust, and air supply is performed by a system dedicated to air supply.

(2) The image recording device according to (1), wherein the air flow valve opening setting tool is attached to the individual air flow valve.

According to this aspect, if the air flow valve opening setting tool is attached to the individual air flow valve, the opening is automatically set to the opening determined for each individual air flow valve. Thereby, the opening degree of the individual air volume valve can be easily adjusted.

(3) The image recording apparatus according to (1) or (2) above, wherein an individual air flow valve is provided in all the individual ducts other than the individual duct that requires the maximum pressure.

According to this aspect, the individual air flow valves are provided in all the individual ducts other than the individual ducts that require the maximum pressure. As a result, the number of individual air flow valves installed is minimized, and the configuration can be simplified.

(4) The image recording apparatus according to any one of (1) to (3), wherein an individual air flow valve is provided at a connection portion between the individual duct and the common chamber.

According to this aspect, the individual air volume valve is provided in the connection portion between the individual duct and the common chamber. Thereby, the installation location of an individual air volume valve can be collected. In addition, this makes it possible to easily assemble each constituent member and attach an attachment to each individual air volume valve.

(5) The image recording device according to (4), wherein a common air flow valve is provided at a connection portion between the common duct and the common chamber.

According to this aspect, the common air flow valve is provided at the connection between the common duct and the common chamber. Thereby, the installation location of an individual air volume valve and a common air volume valve can be collected. Thereby, the assembly of each constituent member, attachment attachment, and adjustment of the air volume of the common duct can be easily performed.

(6) In an image recording apparatus provided with a plurality of exhaust ports or air supply ports, wherein the exhaust amount from each exhaust port or the air supply amount from each air supply port is individually defined, Individual ducts that are individually connected to the mouth and are arranged in a prescribed path, a common chamber to which the individual ducts are commonly connected, a common duct that is connected to the common chamber, and a common duct A common air volume valve, which is provided in a blower and a common duct, and is capable of adjusting the air volume in the common duct by adjusting the opening, is provided in at least one individual duct, and has a diameter determined for each individual duct. An orifice plate provided with a hole, and by adjusting the air volume of the common duct to a predetermined air volume by a common air volume valve, the exhaust air is exhausted at a specified exhaust volume or regulated from the air supply opening. An image recording apparatus which is an air supply at air charge of.

According to this aspect, when the air volume of the common duct is adjusted to a predetermined air volume by the common air volume valve, the air is exhausted from the exhaust port with the specified exhaust amount, or is supplied with the specified air amount from the air supply port. Is done. In this aspect, an orifice plate is used to adjust the air volume balance between the individual ducts in a prescribed relationship. Also according to this aspect, it is possible to easily adjust the exhaust amount of each exhaust port or the supply amount of each air supply port to a specified exhaust amount or supply amount by simply adjusting the air volume of the common duct. Further, even when the blowing capacity of the blower is changed, it is possible to easily return to the specified exhaust amount or supply amount only by adjusting the air volume of the common duct.

(7) The image recording apparatus according to (6), wherein an orifice plate is provided in all the individual ducts other than the individual duct that requires the maximum pressure.

According to this aspect, the orifice plate is provided in all the individual ducts other than the individual duct that requires the maximum pressure. As a result, the number of orifice plates installed can be minimized, and the configuration can be simplified.

(8) The image recording apparatus according to (6) or (7), wherein an orifice plate is provided at a connection portion between the individual duct and the common chamber.

According to this aspect, the orifice plate is provided at the connection portion between the individual duct and the common chamber. Thereby, the installation location of an orifice plate can be collected. Moreover, this makes it possible to easily assemble each constituent member.

(9) The image recording apparatus according to (8), wherein a common air flow valve is provided at a connection portion between the common duct and the common chamber.

According to this aspect, the common air flow valve is provided at the connection between the common duct and the common chamber. Thereby, the installation location of an orifice plate and a common air volume valve can be collected. Moreover, this makes it possible to easily assemble each constituent member.

(10) A plurality of exhaust ports, individual ducts individually connected to the respective exhaust ports, respectively arranged by a prescribed route, a common chamber to which the individual ducts are commonly connected, and a common chamber In an image recording apparatus equipped with a common duct and a blower connected to the common duct, an exhaust adjustment method for adjusting the exhaust amount from each exhaust port to a specified exhaust amount, the maximum pressure is required. Using the individual ducts as a reference, obtain the regulated value of the air volume of each individual duct and the set value of the air volume of the common duct that are necessary for exhausting with the specified exhaust volume from each exhaust port, and the air volume in the individual duct Exhaust control of the image recording device that regulates the air volume with the regulated amount by installing a valve or orifice plate, and adjusts the air volume of the common duct to a set value by installing an air volume valve in the common duct. Method.

In this aspect, with reference to individual ducts that require the maximum pressure, the restriction of the air volume of each individual duct that is required to exhaust from the individual exhaust ports with the specified displacement, and the air volume of the common duct Find the setting value. Then, an air volume valve or an orifice plate is installed in the individual duct, and the air volume is regulated by the obtained regulation quantity. On the other hand, the air volume of the common duct is adjusted to the set value obtained by the air volume valve. As a result, exhaust can be performed from each exhaust port with a specified exhaust amount.

(11) By adjusting the opening degree, an air volume valve capable of adjusting the air volume is installed in the individual duct, and the opening degree of the air volume valve for regulating by the regulation quantity is obtained for each air volume valve, and the opening degree of the air volume valve The exhaust air adjustment method for the image recording apparatus according to (10), wherein the air volume of the individual duct is regulated by a regulation amount by setting the opening obtained for each air volume valve.

According to this aspect, by using the air volume valve capable of adjusting the air volume, the air volume of the individual duct is regulated with the necessary regulation volume. That is, the required air volume is adjusted.

(12) An air flow valve opening setting tool for setting the opening obtained for each air flow valve is prepared for each air flow valve, and using the air flow valve opening setting device, the air flow valve opening is obtained for each air flow valve. The exhaust gas adjusting method of the image recording apparatus according to (11), wherein the opening degree is set.

According to this aspect, the air flow valve opening is set to a required opening using the air flow valve opening setting tool. Thereby, it can adjust easily to the required opening degree.

(13) The exhaust adjustment method of the image recording apparatus according to (12), wherein the air flow valve opening setting tool is attached to the air flow valve so that the air flow valve opening is set to the opening obtained for each air flow valve.

According to this aspect, by attaching the air flow valve opening setting tool to the air flow valve, the air flow valve opening is set to a required opening.

(14) A plurality of air inlets, individual ducts individually connected to the individual air inlets, respectively arranged by a prescribed path, a common chamber to which the individual ducts are commonly connected, and a common chamber An air supply adjustment method for adjusting an air supply amount from each air supply port to a prescribed air supply amount in an image recording apparatus including a common duct connected and a blower connected to the common duct. The air volume of the individual ducts required to supply air from the individual air inlets with the specified air volume, and the air volume of the common duct Obtain the set value, adjust the air volume of the common duct to the set value by regulating the air volume with the regulated volume by installing the air volume valve or orifice plate in the individual duct, and installing the air volume valve in the common duct, image Air supply adjustment method for recording apparatus

In this aspect, with respect to the individual duct that requires the maximum pressure, the regulated amount of the air volume of each individual duct that is necessary for supplying air with the specified air supply amount from each air supply port, and the common duct Obtain the setting value of the air volume. Then, an air volume valve or an orifice plate is installed in the individual duct, and the air volume is regulated by the obtained regulation quantity. On the other hand, the air volume of the common duct is adjusted to the set value obtained by the air volume valve. Thereby, air can be supplied from the individual air supply ports with a specified air supply amount.

(15) By adjusting the opening, an air flow valve capable of adjusting the air flow is installed in the individual duct, and the opening of the air flow valve for regulating with the regulated amount is obtained for each air flow valve. The air supply adjustment method for the image recording apparatus according to (14), wherein the air volume of the individual duct is regulated by a regulation amount by setting the opening obtained for each air quantity valve.

(16) An air flow valve opening setting tool for setting the opening obtained for each air flow valve is prepared for each air flow valve, and using the air flow valve opening setting device, the air flow valve opening is obtained for each air flow valve. The air supply adjustment method of the image recording apparatus according to (15), wherein the air opening is set to an opening degree.

(17) The air supply valve adjustment method of the image recording apparatus according to (16), wherein the airflow valve opening degree setting tool is attached to the airflow valve so that the airflow valve opening degree is set to the opening degree obtained for each airflow valve. .

According to the present invention, the exhaust amount of the plurality of exhaust ports and / or the supply amount of the plurality of air supply ports provided in the apparatus can be easily adjusted to the specified exhaust amount and / or the supply amount.

Overall configuration diagram showing an embodiment of an image recording apparatus The perspective view which shows schematic structure of an exhaust apparatus Perspective view showing configuration of individual air flow valve Plan view of the individual air flow valve shown in FIG. 5-5 sectional view of FIG. Plan view showing an example of an air flow valve opening setting tool 7-7 sectional view of FIG. The figure which shows the setting procedure of the opening degree of the individual air volume valve using the air volume valve opening degree setting tool A perspective view showing a configuration of a common chamber using an orifice plate Front view of the common chamber shown in FIG.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings.

<< Overall configuration of image recording apparatus >>
FIG. 1 is an overall configuration diagram showing an embodiment of an image recording apparatus. The image recording apparatus 1 is a sheet-fed inkjet printer that prints an image on a sheet of paper (hereinafter referred to as a sheet) by an inkjet method, and in particular, performs color printing on a general-purpose printing sheet using water-based ink. It is an aqueous color inkjet printer.

General-purpose printing paper is not so-called inkjet paper but cellulose such as coated paper (art paper, coated paper, lightweight coated paper, cast paper, fine coated paper, etc.) used in offset printing, etc. This is a paper mainly composed of Further, the water-based ink refers to an ink in which a coloring material such as a dye or a pigment is dissolved or dispersed in water and a water-soluble solvent.

As shown in FIG. 1, the image recording apparatus 1 mainly includes a paper feeding unit 10 that feeds paper P, a processing liquid application unit 20, a processing liquid drying unit 30, a printing unit 40, and an ink drying unit 50. And a stacking unit 60. The processing liquid application unit 20 applies a predetermined processing liquid to the paper P fed from the paper feeding unit 10. The processing liquid drying unit 30 performs a drying process on the paper P coated with the processing liquid. The printing unit 40 prints an image on the dried paper P by an inkjet method. The ink drying unit 50 performs a drying process on the printed paper P. The stacking unit 60 stacks the dried paper P.

<Paper Feeder>
The paper feed unit 10 feeds a single sheet of paper P, which is a medium, one by one. As shown in FIG. 1, the paper feeding unit 10 mainly includes a paper feeding device 12, a feeder board 14, and a paper feeding drum 16.

The paper feeding device 12 takes out the paper P set in a predetermined position in a bundled state in order from the top, and feeds the paper P to the feeder board 14 one by one.

The feeder board 14 receives the paper P fed one by one from the paper feeding device 12, transports the received paper P along a predetermined transport path, and transfers it to the paper feed drum 16.

The paper feed drum 16 receives the paper P fed from the feeder board 14, transports the received paper P along a predetermined transport path, and transports it to the processing liquid coating unit 20. The paper supply drum 16 has a cylindrical shape, and grips and rotates the front end of the paper P in the transport direction with a gripper 17 provided on the peripheral surface, thereby winding and transporting the paper P around the peripheral surface.

<Processing liquid application part>
The processing liquid application unit 20 applies a predetermined processing liquid on the printing surface of the paper P. The treatment liquid applied by the treatment liquid application unit 20 is a liquid having a function of aggregating, insolubilizing or increasing the viscosity of the color material component in the ink. By applying such a treatment liquid in advance (pre-coating) and printing, high-quality printing is possible even when general-purpose printing paper is used.

As shown in FIG. 1, the treatment liquid application unit 20 mainly includes a treatment liquid application drum 22 that conveys the paper P, and a treatment liquid that applies the treatment liquid to the printing surface of the paper P that is conveyed by the treatment liquid application drum 22. And a coating device 24.

The treatment liquid application drum 22 receives the paper P from the paper supply drum 16 of the paper supply unit 10, conveys the received paper P along a predetermined conveyance path, and transfers it to the treatment liquid drying unit 30. The treatment liquid coating drum 22 has a cylindrical shape, and grips and rotates the front end of the paper P in the transport direction with a gripper 23 provided on the peripheral surface, whereby the paper P is wound around the peripheral surface and transported. . The paper P is wound around the peripheral surface of the treatment liquid coating drum 22 and conveyed with the printing surface directed outward.

The processing liquid coating device 24 applies the processing liquid to the surface of the paper P conveyed by the processing liquid coating drum 22. In the present embodiment, the processing liquid is applied by a roller. That is, the processing liquid is applied by pressing a roller (application roller) having a processing liquid applied to the peripheral surface thereof against the printing surface of the paper P conveyed by the processing liquid application drum 22. The coating method of the treatment liquid is not limited to this, and other methods such as a coating method using an inkjet head and a coating method using a spray can also be adopted.

The treatment liquid application unit 20 is configured as described above. The processing liquid is applied to the printing surface of the paper P in the process of being conveyed by the processing liquid application drum 22.

<Processing liquid drying section>
The processing liquid drying unit 30 performs a drying process on the paper P coated with the processing liquid. The processing liquid drying unit 30 mainly includes a processing liquid drying drum 32 that transports the paper P, and a processing liquid drying device 34 that blows warm air on the paper P transported by the processing liquid drying drum 32 to dry the paper P. And comprising.

The processing liquid drying drum 32 receives the paper P from the processing liquid coating drum 22 of the processing liquid coating unit 20, transports the received paper P along a predetermined transport path, and transports it to the printing unit 40. The treatment liquid drying drum 32 is configured by a frame assembled in a cylindrical shape. The gripper 33 provided on the circumferential surface grips and rotates the front end of the paper P in the transport direction, thereby transporting the paper P. .

The treatment liquid drying device 34 is installed inside the treatment liquid drying drum 32 and blows warm air toward the paper P conveyed by the treatment liquid drying drum 32.

The treatment liquid drying unit 30 is configured as described above. In the process of being conveyed by the treatment liquid drying drum 32, the paper P is dried by blowing hot air onto the treatment liquid application surface.

<Printing section>
The printing unit 40 prints a color image on the printing surface of the paper P by an inkjet method using four colors of ink of cyan (C), magenta (M), yellow (Y), and black (K). As shown in FIG. 1, the printing unit 40 mainly discharges ink droplets of C, M, Y, and K colors toward the printing drum 42 that transports the paper P and the paper P that is transported by the printing drum 42. The head unit 44 that prints a color image on the paper P and the scanner 48 that reads the image printed on the paper P are configured.

The printing drum 42 receives the paper P from the processing liquid drying drum 32 of the processing liquid drying unit 30, transports the received paper P along a predetermined transport path, and transfers it to the ink drying unit 50. The printing drum 42 has a cylindrical shape, and grips and rotates the leading end of the paper P with a gripper 43 provided on the peripheral surface, whereby the paper P is wound around the peripheral surface and conveyed.

Further, the printing drum 42 is provided with a suction mechanism for fixing the paper P being conveyed on the drum. For adsorbing the paper P, for example, negative pressure or static electricity is used. In the suction using the negative pressure, for example, a large number of suction holes are formed in the peripheral surface of the printing drum 42, and the paper P is sucked and fixed to the peripheral surface of the printing drum 42 by suction from the inside of the drum. In the suction using static electricity, the peripheral surface of the printing drum 42 is charged, and the paper P is sucked and fixed to the peripheral surface of the printing drum 42 by static electricity.

The head unit 44 includes an inkjet head 46C that ejects cyan ink droplets, an inkjet head 46M that ejects magenta ink droplets, an inkjet head 46Y that ejects yellow ink droplets, and an inkjet head that ejects black ink droplets. 46K. Each of the inkjet heads 46C, 46M, 46Y, and 46K is disposed on a conveyance path of the paper P by the printing drum 42.

Each

inkjet head

46C, 46M, 46Y, 46K is configured by a line head capable of printing with a single pass on the paper P conveyed by the printing drum 42. Each of the inkjet heads 46C, 46M, 46Y, and 46K has a nozzle surface at the tip, and ejects ink droplets from the nozzles arranged on the nozzle surface toward the paper P conveyed by the printing drum 42.

As shown in FIG. 1, the scanner 48 is installed on the downstream side of the head unit 44 with respect to the conveyance direction of the paper P by the printing drum 42. The scanner 48 reads an image printed on the paper P by the head unit 44.

The printing unit 40 is configured as described above. In the process of being transported by the printing drum 42, the paper P is ejected onto the printing surface by ink droplets of each color of C, M, Y, K from each of the inkjet heads 46C, 46M, 46Y, 46K constituting the head unit 44. A color image is printed on the printing surface. The image printed on the paper P is read by the scanner 48 as necessary.

<Ink drying section>
The ink drying unit 50 performs a drying process on the paper P immediately after printing by the printing unit 40. As shown in FIG. 1, the ink drying unit 50 mainly includes a chain gripper 52, a paper guide 54, a heat drying device 56, and an exhaust device 58. The chain gripper 52 conveys the paper P. The paper guide 54 guides the travel of the paper P conveyed by the chain gripper 52. The heating and drying device 56 heats and dries the printing surface of the paper P conveyed by the chain gripper 52. The exhaust device 58 exhausts the air in the ink drying unit 50.

The chain gripper 52 receives the paper P from the printing drum 42 of the printing unit 40, transports the received paper P along a predetermined transport path, and transfers it to the stacking unit 60. The chain gripper 52 includes an endless chain 52A that travels along a certain travel route. The chain gripper 52 grips the leading end of the paper P with the gripper 52B provided in the chain 52A and transports the paper P. The paper P is transported to the chain gripper 52, passes through the heating area and the non-heating area set in the ink drying unit 50, and is transferred to the stacking unit 60. The heating area is set to an area where the paper P transferred from the printing unit 40 is first transported horizontally, and the non-heating area is set to an area where the paper P is transported in an inclined manner.

The paper guide 54 is disposed along the transport path of the paper P by the chain gripper 52 and guides the travel of the paper P transported by the chain gripper 52. The paper guide 54 includes a first guide board 54A and a second guide board 54B.

The first guide board 54A is a guide board arranged in the heating region, and has a hollow flat plate shape. The first guide board 54A has an upper surface portion as a guide surface of the paper P, and the paper P is conveyed while sliding on the guide surface.

A large number of suction holes are provided on the guide surface of the first guide board 54A. The first guide board 54A guides the travel of the paper P while sucking the paper P against the guide surface by sucking negative pressure from the inside through the suction holes.

Further, the first guide board 54A is provided with a cooling mechanism for cooling the guide surface. The cooling mechanism is constituted by, for example, a water-cooling type cooling mechanism, and cools the guide surface by flowing a cooling liquid through a flow path disposed inside. The first guide board 54A uses the cooling mechanism to control the temperature of the guide surface to a constant temperature.

The second guide board 54B is a guide board disposed in the non-heated area. The configuration of the second guide board 54B is the same as the configuration of the first guide board 54A. That is, it has a hollow flat plate shape and guides the travel of the paper P while sucking the paper P against the guide surface. In addition, a cooling mechanism is provided, and the temperature of the guide surface is controlled to a constant temperature.

The heating and drying device 56 is installed in the heating area, and dries the printing surface of the paper P conveyed through the heating area with radiant heat from a heat source. The heating / drying device 56 includes a plurality of infrared lamps 56 </ b> A as heat sources, and is disposed inside the chain gripper 52. The infrared lamps 56A are arranged at regular intervals along the conveyance path of the paper P in the heating area.

The exhaust device 58 exhausts the air in the ink drying unit 50. The exhaust device 58 includes a plurality of exhaust hoods 58A to 58D, an exhaust duct connected to each of the exhaust hoods 58A to 58D (not shown in FIG. 1, refer to FIG. 2), and a blower connected to the exhaust duct (see FIG. 1). (Not shown, see FIG. 2).

The plurality of exhaust hoods 58A to 58D are arranged along the conveyance path of the paper P in the heating area and the non-heating area, and are arranged inside the chain gripper 52. The exhaust hoods 58A to 58D are arranged so as to cover the space above the first guide board 54A and the second guide board 54B. Each of the exhaust hoods 58A to 58B has exhaust ports 58a to 58d, and an exhaust duct is connected to the exhaust ports 58a to 58d. The exhaust device 58 drives the blower to exhaust the air in the ink drying unit 50 out of the device through the exhaust duct connected to each of the exhaust hoods 58A to 58D.

Here, the exhaust amount of each of the exhaust hoods 58A to 58D is determined in advance, and the exhaust device 58 exhausts the exhaust hood 58A to 58D with a specified exhaust amount. This will be described in detail later.

The ink drying unit 50 is configured as described above. In the course of being conveyed by the chain gripper 52, the printing surface of the paper P is heated by the heating and drying device 56 and dried.

<Accumulation part>
The stacking unit 60 stacks the printed paper P in one place. As shown in FIG. 1, the stacking unit 60 mainly includes a stacking device 62 that receives and stacks the paper P conveyed from the ink drying unit 50 by the chain gripper 52.

The chain gripper 52 releases the paper P at a predetermined stacking position. The stacking device 62 collects the released sheets P and stacks them in a bundle.

<Flow of printing process>
Printing is performed in the order of (a) paper feed, (b) application of treatment liquid, (c) drying, (d) printing, (e) drying, and (f) accumulation.

When printing is instructed, paper feeding is started from the paper feeding unit 10. The paper P fed from the paper feeding unit 10 is first transported to the processing liquid coating unit 20. Then, the processing liquid is applied to the printing surface in the course of being conveyed by the processing liquid application drum 22 of the processing liquid application unit 20.

The sheet P coated with the processing liquid is then conveyed to the processing liquid drying unit 30. In the course of being conveyed by the treatment liquid drying drum 32 of the treatment liquid drying unit 30, warm air is blown onto the printing surface to perform a drying process.

The dried paper P is then conveyed to the printing unit 40. Then, in the process of being conveyed by the printing drum 42 of the printing unit 40, ink droplets of cyan, magenta, yellow, and black are ejected, and a color image is printed on the printing surface.

The printed paper P is then conveyed to the ink drying unit 50. Then, in the process of being transported by the chain gripper 52 of the ink drying unit 50, heat is applied to the printing surface from the infrared lamp 56A to perform a drying process.

The dried paper P is conveyed as it is to the stacking unit 60 by the chain gripper 52 and is collected by the stacking device 62 of the stacking unit 60.

《Exhaust system configuration》
<Basic configuration>
FIG. 2 is a perspective view showing a schematic configuration of the exhaust device.

As described above, the exhaust device 58 provided in the ink drying unit 50 includes the plurality of exhaust hoods 58A to 58D, the exhaust duct 100 connected to each of the exhaust hoods 58A to 58D, and the blower 120 connected to the exhaust duct 100. And comprising.

The plurality of exhaust hoods 58A to 58D are disposed along the transport path PP of the paper P in the ink drying unit 50, and are disposed so as to cover the upper portions of the first guide board 54A and the second guide board 54B (see FIG. 1). ). Each of the exhaust hoods 58A to 58D has exhaust ports 58a to 58d, and the exhaust duct 100 is connected to the exhaust ports 58a to 58d. In the following, in order to distinguish the individual exhaust hoods 58A to 58D, if necessary, the exhaust hood 58A is a first exhaust hood, the exhaust hood 58B is a second exhaust hood, and the exhaust hood 58C is a third exhaust hood. The exhaust hood and exhaust hood 58D are referred to as a fourth exhaust hood. The exhaust port 58a is referred to as a first exhaust port, the exhaust port 58b is referred to as a second exhaust port, the exhaust port 58c is referred to as a third exhaust port, and the exhaust port 58d is referred to as a fourth exhaust port.

As shown in FIG. 2, in the exhaust duct 100, the individual ducts 102A to 102D individually connected to the exhaust ports 58a to 58d of the exhaust hoods 58A to 58D and the individual ducts 102A to 102D are connected in common. A chamber 104 and a common duct 106 connected to the common chamber 104 are provided.

The individual ducts 102A to 102D have one end connected to the exhaust ports 58a to 58d of the exhaust hoods 58A to 58D and the other end connected to the common chamber 104. In the following, in order to distinguish individual ducts 102A to 102D, if necessary, individual duct 102A is a first individual duct, individual duct 102B is a second individual duct, and individual duct 102C is a third duct. The individual duct and the individual duct 102D are referred to as a fourth individual duct. The first individual duct 102A is connected to the first exhaust port 58a, the second individual duct 102B is connected to the second exhaust port 58b, and the third individual duct 102C is connected to the third exhaust port 58c. The fourth individual duct 102D is connected to the fourth exhaust port 58d.

The individual ducts 102A to 102D can be configured by combining, for example, a stainless steel pipe or an aluminum flexible pipe.

The common chamber 104 has a hollow box shape and is provided with individual duct connection portions 108A to 108D for connecting the individual ducts 102A to 102D and a common duct connection portion 110 for connecting the common duct 106. In the following, in order to distinguish the individual individual duct connecting portions 108A to 108D, the individual duct connecting portion 108A is used as the first individual duct connecting portion and the individual duct connecting portion 108B is used as the second individual duct as necessary. The connecting portion and the individual duct connecting portion 108C are referred to as a third individual duct connecting portion, and the individual duct connecting portion 108D is referred to as a fourth individual duct connecting portion. The first individual duct 102A is connected to the first individual duct connection 108A, the second individual duct 102B is connected to the second individual duct connection 108B, and the third individual duct 102C is the third individual duct. Connected to the connecting portion 108C, the fourth individual duct 102D is connected to the fourth individual duct connecting portion 108D.

The individual duct connection portions 108A to 108D have a tube shape and are provided with a flange portion at the tip portion. The individual ducts 102A to 102D are connected using this flange portion.

The common duct connection part 110 also has a tubular shape and has a flange part at the tip part. The common duct 106 is connected using this flange portion.

The individual duct connecting portions 108A to 108D constitute a part of the pipelines of the individual ducts 102A to 102D by connecting the individual ducts 102A to 102D. Moreover, the common duct connection part 110 comprises a part of pipe line of the common duct 106 by connecting the common duct 106.

The common chamber 104 is installed at a predetermined installation position (common chamber installation position) set in the apparatus of the image recording apparatus 1. Therefore, the relative positional relationship between the common chamber 104 and the exhaust hoods 58A to 58D is fixed. Each individual duct 102A to 102D is disposed along a predetermined path, and connects the common chamber 104 and the exhaust hoods 58A to 58D.

The common duct 106 connects the common chamber 104 and the blower 120. One end of the common duct 106 is connected to the common duct connection part 110 of the common chamber 104, and the other end is connected to the suction port 120 </ b> A of the blower 120 to connect the common chamber 104 and the blower 120.

The blower 120 blows air in the exhaust duct in the exhaust direction D with a constant air volume. The blower 120 is installed at a predetermined installation position (blower installation position) set in advance. Therefore, the relative positional relationship between the common chamber 104 and the blower 120 is also fixed. The common duct 106 is disposed along a predetermined route and connects the common chamber 104 and the blower 120.

The duct (not shown) which guides exhaust to a predetermined exhaust location is connected to the discharge port 120B of the blower 120. For example, when exhausting outdoors, a duct connected to an outdoor exhaust port is connected.

By driving the blower 120, the air in the ink drying section 50 is sucked from the exhaust hoods 58A to 58D and exhausted through the exhaust duct 100.

<Adjustment of displacement>
The ink drying unit 50 exhausts the areas covered with the exhaust hoods 58A to 58D with a predetermined exhaust amount. Therefore, the exhaust device 58 is adjusted so that the exhaust ports 58a to 58d of the exhaust hoods 58A to 58D exhaust with a specified exhaust amount. In the exhaust device 58 of the present embodiment, the exhaust amount of each of the exhaust ports 58a to 58d is adjusted by the following method.

As described above, the relative positional relationship between the common chamber 104 and the exhaust hoods 58A to 58D is fixed, and the individual ducts 102A to 102D are arranged along a predetermined route. Further, the relative positional relationship between the common chamber 104 and the blower 120 is also fixed, and the common duct 106 is disposed along a predetermined route. Therefore, the piping path of the exhaust duct 100 is known, and the pressure loss is also known.

Therefore, for example, when the highest pressure is required for the first individual duct 102A in order to exhaust the exhaust gas from each of the exhaust ports 58a to 58d with a specified exhaust amount, the individual ducts 102B to 102D other than the first individual duct 102A are used. If the air volume adjusting means is installed in the air outlet and the air volume is adjusted so as to be exhausted with the specified exhaust volume, a relative air volume balance for exhausting with the specified exhaust volume from each of the exhaust ports 58a to 58d can be obtained. .

On the other hand, the pressure loss is unknown because the portion beyond the blower 120 depends on the environment where the image recording apparatus 1 is installed.

Therefore, by adjusting the total air volume of the individual ducts 102A to 102D with the air volume of the common duct 106, the air volume is adjusted to be necessary for the individual ducts 102A to 102D.

That is, in the exhaust device 58 of the present embodiment, utilizing the fact that the pressure loss of the exhaust duct 100 is known, the air volume balance of the individual ducts 102A to 102D is adjusted in advance and the air volume of the common duct 106 is adjusted. As a result, the air volume required for each individual duct 102A to 102D is collectively adjusted so that the exhaust air is exhausted from the exhaust ports 58a to 58d with a specified exhaust amount.

In the exhaust device 58 of the present embodiment, the air volume of the individual ducts 102B to 102D and the common duct 106 is adjusted by an air volume adjusting valve (an air volume valve that can adjust the air volume by adjusting the opening). Yes.

<Air volume adjustment mechanism>
Hereinafter, this air volume adjustment mechanism will be described. In the present embodiment, the first individual duct 102A, the second individual duct 102B, the third individual duct 102C, and the fourth individual duct are used to exhaust the exhaust gas from the exhaust ports 58a to 58d with a prescribed exhaust amount. It is assumed that the pressure required in the order of the duct 102D decreases. That is, the maximum pressure is required for the first individual duct 102A.

Note that the pressures of the individual ducts 102A to 102D necessary for exhausting the exhaust gas from the exhaust ports 58a to 58d with a specified exhaust amount are determined by the inner diameter and length of the individual ducts 102A to 102D.

As shown in FIG. 2, the second individual duct connection portion 108B, the third individual duct connection portion 108C, and the fourth individual duct connection portion 108D of the common chamber 104 are configured by an air volume adjusting valve. The individual

air flow valves

130B, 130C, and 130D are provided.

In addition, the common duct connection part 110 of the common chamber 104 is also provided with a common air volume valve 160 constituted by an air volume adjusting valve.

In the following, in order to distinguish the individual air volume valves 130B to 130D, the individual air volume valve 130B is used as the second individual air volume valve, the individual air volume valve 130C is used as the third individual air volume valve, and the individual air volume as necessary. The valve 130D is referred to as a fourth individual air volume valve.

FIG. 3 is a perspective view showing the configuration of the individual air flow valve. 4 is a plan view of the individual air flow valve shown in FIG. 3, and FIG. 5 is a sectional view taken along line 5-5 of FIG.

As shown in FIGS. 3 to 5, the individual air flow valves 130B to 130D are provided with blades 132 in the ducts of the individual duct connecting portions 108B to 108D, and the opening degree is adjusted by adjusting the angle of the blades 132. Then, the air volume of the air flowing in the individual duct connection part is adjusted.

The blade 132 has a disk shape and includes a shaft 134 at the center. The shaft 134 is rotatably supported by a bush 136 provided inside the individual duct connecting portions 108B to 108D. The shaft 134 is guided to the outside of the individual duct connection portions 108B to 108D through a sleeve 138 provided outside the individual duct connection portions 108B to 108D. The sleeve 138 is disposed orthogonal to the axis of the individual duct connecting portions 108B to 108D.

A semicircular blade angle adjusting plate 140 is provided on the top of the shaft 134 guided to the outside of the individual duct connecting portions 108B to 108D. The angle of the blade 132 is adjusted by rotating the blade angle adjusting plate 140.

At the top of the sleeve 138, a fixing flange 142 for fixing the blade angle adjusting plate 140 is provided. The fixing flange 142 is provided with a screw hole 144. On the other hand, the blade angle adjusting plate 140 is provided with an arc-shaped long hole 146 corresponding to the position of the screw hole 144. A blade angle adjusting plate fixing screw 148 is attached to the screw hole 144 through the long hole 146 of the blade angle adjusting plate 140. The blade angle adjusting plate fixing screw 148 is constituted by a thumbscrew.

The blade angle adjusting plate 140 is rotatably supported by loosening the blade angle adjusting plate fixing screw 148, and is fixed to the fixing flange 142 by tightening the blade angle adjusting plate fixing screw 148.

Further, the fixing flange 142 is provided with a scale 150 serving as an index of opening, and the set opening can be visually recognized by the scale 150.

The configuration of the common air flow valve 160 is the same as that of the individual air flow valves 130B to 130D. Therefore, the description is omitted.

<Adjustment procedure>
As described above, when the piping path of the exhaust duct 100 is known, the air volume balance of the individual ducts 102A to 102D for exhausting the exhaust gas from the exhaust ports 58a to 58d with a specified exhaust amount is uniquely determined.

Therefore, first, obtain the air volume balance between the individual ducts to be set. The air volume balance between the individual ducts is based on the individual duct that maximizes the pressure required to exhaust with the specified displacement, and the individual ducts that are required to exhaust with the specified displacement from the individual exhaust ports. This is done by obtaining the regulated amount of airflow. In this example, since the individual duct that requires the maximum pressure is the first individual duct 102A, the air volume regulation amount of the other individual ducts 102B to 102D is obtained on the basis of the first individual duct 102A. . Here, since the air volume is regulated by the individual air volume valves 130B to 130D, the air volume regulation volume is obtained as a set value of the opening degree of the individual air volume valves 130B to 130D.

Also, since the air volume required for the common duct 106 is uniquely determined, the set value of the air volume of the common duct 106 is also obtained.

Next, the opening of each individual air volume valve 130B to 130D is set to the set value obtained. The setting is performed by adjusting the angle of the blade angle adjusting plate 140 of each of the individual air volume valves 130B to 130D. This completes the adjustment of the air volume balance of the individual ducts 102A to 102D necessary for exhausting with the specified exhaust amount from the individual exhaust ports 58a to 58d. This adjustment operation may be performed at the installation location of the image recording apparatus 1 or at the time of shipment.

Next, adjustment is made so that the air volume of the common duct 106 becomes the determined set value. This adjustment is performed by driving the blower 120 and using an instrument such as a pressure gauge or an anemometer to adjust the opening of the common air volume valve 160 so that the air volume of the common duct 106 becomes the calculated air volume. Is called. This operation is performed at the place where the image recording apparatus 1 is installed.

The exhaust volume adjustment work is completed in a series of steps. Thereafter, when the blower 120 is driven, the exhaust air is exhausted from the exhaust ports 58a to 58d with a specified exhaust amount.

As described above, the image recording apparatus 1 according to the present embodiment can be set so that the exhaust air is exhausted from the exhaust ports 58a to 58d with a specified exhaust amount by simply adjusting the air volume of the common duct 106. The displacement adjustment operation can be performed very easily.

In addition, even if the air volume of the blower 120 changes due to factors over time, if the air volume of the common duct 106 is reset, it is reset so that the air is exhausted at the original exhaust volume. Also, resetting can be done easily.

Note that the exhaust adjustment method of the present embodiment is based on the assumption that the duct of the exhaust duct is known. However, depending on the place where the image recording apparatus 1 is installed, it may be necessary to change the layout of the exhaust duct. In such a case, as in the conventional case, the individual air volume valves are individually adjusted to adjust the exhaust amount of each exhaust port.

<< Other Embodiments >>
<Air flow valve opening setting tool>
As described above, the adjustment of the exhaust amount is performed by setting the opening degree of the individual air flow valves 130B to 130D provided in the individual ducts 102B to 102D to the opening degree obtained in advance, and obtaining the air volume of the common duct 106 in advance. This is done by adjusting the air volume.

The opening degree of the individual air volume valves 130B to 130D can be adjusted using the scale 150 provided in the individual air volume valves 130B to 130D. By preparing and using the air flow valve opening setting tool to adjust the opening, the opening can be adjusted more easily.

FIG. 6 is a plan view showing an example of an air flow valve opening setting tool. FIG. 7 is a sectional view taken along the line 7-7 in FIG.

As shown in the figure, the air flow valve opening setting tool 170 of this example is used by being attached to the individual air flow valves 130B to 130D.

The air volume valve opening setting tool 170 includes a mounting part 172 and an angle adjustment part 174.

The mounting portion 172 has an elongated thin plate shape, a shaft insertion hole 172A through which the shaft 134 of the individual air flow valves 130B to 130D is inserted at one end, and a screw through which the blade angle adjustment plate fixing screw 148 is inserted at the other end. An insertion hole 172B is provided. The mounting portion 172 has a fixed posture with respect to the fixing flange 142 of the individual air flow valves 130B to 130D by passing the shaft 134 through the shaft insertion hole 172A and passing the blade angle adjustment plate fixing screw 148 through the screw insertion hole 172B. Installed.

The angle adjusting unit 174 has a semicircular shape and is provided integrally with the mounting unit 172.

The air flow valve opening setting tool 170 causes the string portion (straight portion) 174A of the angle adjustment unit 174 to abut on the string portion (straight portion) 140A of the blade angle adjustment plate 140 of the individual air flow valves 130B to 130D. The opening of the individual air volume valves 130B to 130D is set to a desired opening. Therefore, the opening degree to be set is adjusted by adjusting the mounting angle α of the angle adjusting unit 174 with respect to the mounting unit 172. The angle α is defined as an angle formed by a line segment L passing through the center of the shaft insertion hole 172A and the screw insertion hole 172B provided in the mounting portion 172 and the string portion 174A of the angle adjustment portion 174.

The opening degree of the individual air volume valves 130B to 130D for balancing the air volume is determined for each of the individual air volume valves 130B to 130D. Accordingly, the air flow valve opening setting tool 170 is prepared for each of the individual air flow valves 130B to 130D.

FIG. 8 is a diagram showing a procedure for setting the opening of the individual air flow valve using the air flow valve opening setting tool.

FIG. 8 (A) shows the state of the individual air flow valve before the air flow valve opening setting tool is attached. In this state, the opening degree of the individual air volume valve is not adjusted.

FIG. 8 (B) shows a setting preparation stage. As shown in the figure, first, the blade angle adjusting plate fixing screw 148 is removed to make the blade 132 movable. In this state, the air flow valve opening setting tool 170 is temporarily attached to the individual air flow valve. For temporary attachment, the shaft 134 of the individual air flow valve is passed through the shaft insertion hole 172A of the air flow valve opening setting tool 170, and the blade angle adjusting plate fixing screw 148 is passed through the screw insertion hole 172B to be temporarily fixed in the screw hole 144. Is done.

In the air flow valve opening setting tool 170 temporarily attached to the individual air flow valve, the angle of the string portion 174A of the angle adjustment unit 174 is uniquely determined. The angle of the blade angle adjusting plate 140 of the individual air volume valve is adjusted in accordance with the string portion 174A of the angle adjusting unit 174. That is, the angle of the blade angle adjusting plate 140 is adjusted such that the string portion 140A of the blade angle adjusting plate 140 abuts on the string portion 174A of the angle adjusting unit 174.

After adjustment, the blade angle adjusting plate 140 is fixed by tightening the blade angle adjusting plate fixing screw 148. Thereby, the opening degree of the individual air volume valve is set to the determined opening degree.

Thus, the setting operation of the opening degree of the individual air volume valve can be easily performed by setting the opening degree of the individual air volume valve to a predetermined opening degree using the air volume valve opening degree setting tool. .

It should be noted that the air flow valve opening setting tool is not particularly limited as long as the opening of the individual air flow valve can be set to a predetermined opening. It is created according to the configuration of the air flow valve to be used.

In the above example, it is configured to be used by being attached to the individual air flow valve, but it may be used only at the time of setting. That is, after opening degree setting, it can also be set as the structure removed from a separate air volume valve.

<Other examples of air volume adjustment means>
As a means to adjust the air volume of individual ducts, an air volume valve that can adjust the air volume is used, but since the air volume to be regulated is known, a fixed air volume valve is used to regulate the air volume and A configuration in which the air volume is set may be employed.

Also, an orifice plate can be installed to regulate the air volume and set to a desired air volume.

FIG. 9 is a perspective view showing a configuration of a common chamber using an orifice plate as air volume adjusting means. FIG. 10 is a front view of the common chamber shown in FIG.

As shown in the figure, when the air volume of the individual duct is adjusted using the orifice plate, the orifice plates 180B to 180D are installed in the ducts of the individual duct connecting portions 108B to 108D. The orifice plates 180B to 180D are formed with holes 182B to 182D having a diameter corresponding to the regulated air volume.

In this way, it is possible to use an orifice plate to regulate the air volume and balance the air volume between the individual ducts. The configuration can be simplified by using the orifice plate.

<Installation position and number of air flow valves or orifice plates>
In the said embodiment, although the separate air volume valve which adjusts the air volume of an individual duct is arrange | positioned in the individual duct connection part of a common chamber, the installation position of an individual air volume valve is not limited to this position. The same applies when the air volume is regulated by the orifice plate.

In addition, by arranging the individual air flow valve or orifice plate in the individual duct connection part of the common chamber, the installation locations of the individual air flow valves can be consolidated, and the workability of setting the opening of the individual air flow valve can be improved. .

In the above embodiment, the individual air flow valves are installed in the individual ducts other than the individual ducts that require the maximum pressure. However, the individual air flow valves may be installed in all the individual ducts. Note that the number of individual air flow valves installed can be reduced by installing individual air flow valves in other individual ducts and adjusting the air flow with reference to individual ducts that require the maximum pressure. It can be simplified.

The installation position of the common air flow valve is also not particularly limited, but by installing it at the common duct connection provided in the common chamber, the workability of the air flow adjustment work can be improved.

<Exhaust duct layout>
The exhaust duct only needs to have a known piping path. Therefore, the position where the common chamber is installed and the position where the blower is installed are not necessarily in the image recording apparatus.

<Exhaust point>
In the above embodiment, the exhaust is performed only for the ink drying unit, but the location where the exhaust is performed is not limited to this. For example, the processing liquid drying unit can be configured to exhaust similarly.

<Air flow adjustment valve>
In the above embodiment, as the individual air volume valve and the common air volume valve, the air volume adjusting valve configured to adjust the air volume by rotating the blades is used, but the air volume adjusting valve used as the individual air volume valve and the common air volume valve. However, the configuration is not limited to this. In addition, for example, an air volume adjusting valve configured to adjust the air volume by swinging the blades or an air volume adjusting valve configured to adjust the air volume by sliding the blades can be used.

Also, when setting the opening of the individual air flow valve using the air flow valve opening setting tool, an air flow valve opening setting tool shall be prepared according to the structure of the air flow adjusting valve to be used.

<Air supply adjustment>
In the above-described embodiment, the air supply amount can be adjusted by the same method as the exhaust for the image recording apparatus provided with the air supply port, which has been described only for the exhaust.

Supplied air can be supplied, for example, to a place that needs cooling in the apparatus. For example, in the case of the image recording apparatus 1 having the above configuration, the air is supplied toward the first guide board 54A and the second guide board 54B of the ink drying unit 50, and the first guide board 54A and the second guide board 54B are cooled. It can be.

<Other examples of image recording device>
In the above embodiment, an inkjet printer has been described as an example of an image recording apparatus to which the present invention is applied. However, the application of the present invention is not limited to this. Any recording system can be used as long as the image recording apparatus has a plurality of exhaust ports and / or air supply ports and needs to be exhausted and / or supplied with a specified air supply amount. The present invention can also be applied to an image recording apparatus.

DESCRIPTION OF SYMBOLS 1 ... Image recording apparatus, 10 ... Paper feed part, 12 ... Paper feed apparatus, 14 ... Feeder board, 16 ... Paper feed drum, 17 ... Gripper, 20 ... Processing liquid application part, 22 ... Processing liquid application drum, 23 ... Gripper , 24 ... Treatment liquid coating device, 30 ... Treatment liquid drying section, 32 ... Treatment liquid drying drum, 33 ... Gripper, 34 ... Treatment liquid drying apparatus, 40 ... Printing section, 42 ... Printing drum, 43 ... Gripper, 44 ... Head Unit: 46C, 46M, 46Y, 46K ... inkjet head, 48 ... scanner, 50 ... ink drying section, 52 ... chain gripper, 52A ... chain, 52B ... gripper, 54 ... paper guide, 54A ... first guide board, 54B ... Second guide board 56 ... heat drying device 56A ... infrared lamp 58 ... exhaust device 58A-58D ... exhaust hood 58a-58d ... exhaust , 60 ... Accumulation part, 62 ... Accumulation device, 100 ... Exhaust duct, 102A to 102D ... Individual duct, 104 ... Common chamber, 106 ... Common duct, 108A-108D ... Individual duct connection part, 110 ... Common duct connection part, 120 Blower, 120A ... Suction port, 120B ... Discharge port, 130B to 130D ... Individual air flow valve, 132 ... Blade, 134 ... Shaft, 136 ... Bush, 138 ... Sleeve, 140 ... Blade angle adjustment plate, 140A ... Blade angle adjustment plate 142: fixing flange, 144 ... screw hole, 146 ... long hole, 148 ... blade angle adjusting plate fixing screw, 150 ... scale, 160 ... common air flow valve, 170 ... air flow valve opening setting tool, 172 ... mounting portion, 172A ... shaft insertion hole, 172B ... screw insertion hole, 174 ... angle adjustment portion, 174A ... string portion of angle adjustment portion 174, 18 B ~ 180D ... orifice plate, the hole of 182B ~ 182D ... orifice plate, P ... paper

Claims

In an image recording apparatus comprising a plurality of exhaust ports or air supply ports, wherein the amount of exhaust from each of the exhaust ports or the amount of air supplied from each of the air supply ports is individually defined,
Individual ducts that are individually connected to the individual exhaust ports or the air supply ports, and are respectively arranged in a prescribed path,
A common chamber to which the individual ducts are connected in common;
A common duct connected to the common chamber;
A blower connected to the common duct;
A common air volume valve provided in the common duct and capable of adjusting the air volume in the common duct by adjusting the opening;
An individual air volume valve that is provided in at least one of the individual ducts, and that can adjust the air volume in the individual duct by adjusting the opening;
An air flow valve opening setting tool for setting the opening of the individual air flow valve to an opening determined in advance for each individual air flow valve;
The opening of the individual air flow valve is set to an opening previously determined for each individual air flow valve by the air flow valve opening setting tool, and the air flow in the common duct is previously set by the common air flow valve. An image recording apparatus that is exhausted from the exhaust port with a specified exhaust amount or is supplied with a specified air supply amount from the air supply port by adjusting to a predetermined air volume.
The air flow valve opening setting tool is attached to the individual air flow valve.
The image recording apparatus according to claim 1.
The individual air flow valves are provided in all the individual ducts other than the individual ducts for which maximum pressure is required.
The image recording apparatus according to claim 1.
The individual air volume valve is provided at a connection portion between the individual duct and the common chamber.
The image recording apparatus according to claim 1.
The common air flow valve is provided in a connection portion between the common duct and the common chamber.
The image recording apparatus according to claim 4.
In an image recording apparatus comprising a plurality of exhaust ports or air supply ports, wherein the amount of exhaust from each of the exhaust ports or the amount of air supplied from each of the air supply ports is individually defined,
Individual ducts that are individually connected to the individual exhaust ports or the air supply ports, and are respectively arranged in a prescribed path,
A common chamber to which the individual ducts are connected in common;
A common duct connected to the common chamber;
A blower connected to the common duct;
A common air volume valve provided in the common duct and capable of adjusting the air volume in the common duct by adjusting the opening;
An orifice plate provided in at least one of the individual ducts and having a hole having a diameter defined for each individual duct;
And by adjusting the air volume of the common duct to a predetermined air volume by the common air volume valve, the exhaust air is exhausted from the exhaust port with a specified exhaust amount, or a predetermined air supply amount from the air supply port. The image recording device supplied with air.
The orifice plate is provided in all the individual ducts other than the individual ducts for which maximum pressure is required.
The image recording apparatus according to claim 6.
The orifice plate is provided at a connection portion between the individual duct and the common chamber.
The image recording apparatus according to claim 6 or 7.
The common air flow valve is provided in a connection portion between the common duct and the common chamber.
The image recording apparatus according to claim 8.
Multiple exhaust ports,
Individual ducts that are individually connected to the individual exhaust ports and are arranged in a prescribed path,
A common chamber to which the individual ducts are connected in common;
A common duct connected to the common chamber;
A blower connected to the common duct;
In an image recording apparatus comprising: an exhaust adjustment method for adjusting an exhaust amount from each exhaust port to a specified exhaust amount,
With reference to the individual ducts that require the maximum pressure, the air volume restriction amount of each individual duct and the air volume of the common duct that are necessary for exhausting at a specified displacement from each of the exhaust ports. Find the setting value
By installing an air volume valve or orifice plate in the individual duct, the air volume is regulated by the regulated volume,
Adjusting the air volume of the common duct to the set value by installing an air volume valve in the common duct;
An exhaust adjustment method for an image recording apparatus.
By adjusting the opening, an air flow valve capable of adjusting the air flow is installed in the individual duct,
Obtaining the opening of the air volume valve for regulating with the regulation quantity for each air volume valve,
By setting the opening of the air flow valve to the opening obtained for each of the air flow valves, the air flow of the individual duct is regulated by the regulation amount.
The exhaust adjustment method for an image recording apparatus according to claim 10.
Prepare an air flow valve opening setting tool to set the opening obtained for each air flow valve for each air flow valve,
Using the air flow valve opening setting tool, the opening of the air flow valve is set to the opening obtained for each air flow valve,
The exhaust gas adjustment method for an image recording apparatus according to claim 11.
By attaching the air flow valve opening setting tool to the air flow valve, the opening of the air flow valve is set to the opening obtained for each of the air flow valves.
The exhaust gas adjustment method for an image recording apparatus according to claim 12.
Multiple air inlets,
Individual ducts individually connected to each of the air supply ports, each arranged in a prescribed path;
A common chamber to which the individual ducts are connected in common;
A common duct connected to the common chamber;
A blower connected to the common duct;
An air supply adjustment method for adjusting an air supply amount from each of the air supply ports to a specified air supply amount,
With respect to the individual ducts that require the maximum pressure, the regulated air volume of each of the individual ducts that is necessary for supplying air with a specified amount of air from each of the air supply ports, and the common duct Find the setting value of
By installing an air volume valve or orifice plate in the individual duct, the air volume is regulated by the regulated volume,
Installing an air volume valve in the common duct, and adjusting the air volume of the common duct to the set value;
An air supply adjustment method for an image recording apparatus.
By adjusting the opening, an air flow valve capable of adjusting the air flow is installed in the individual duct,
Obtaining the opening of the air volume valve for regulating with the regulation quantity for each air volume valve,
By setting the opening of the air flow valve to the opening obtained for each of the air flow valves, the air flow of the individual duct is regulated by the regulation amount.
The air supply adjustment method of the image recording apparatus according to claim 14.
Prepare an air flow valve opening setting tool to set the opening obtained for each air flow valve for each air flow valve,
Using the air flow valve opening setting tool, the opening of the air flow valve is set to the opening obtained for each air flow valve,
The air supply adjustment method of the image recording apparatus according to claim 15.
By attaching the air flow valve opening setting tool to the air flow valve, the opening of the air flow valve is set to the opening obtained for each of the air flow valves.
The air supply adjustment method of the image recording apparatus according to claim 16.