CN100537048C - Liquid application device, inkjet recording apparatus, and method of controlling liquid application device - Google Patents
Liquid application device, inkjet recording apparatus, and method of controlling liquid application device Download PDFInfo
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- CN100537048C CN100537048C CNB2006800003018A CN200680000301A CN100537048C CN 100537048 C CN100537048 C CN 100537048C CN B2006800003018 A CNB2006800003018 A CN B2006800003018A CN 200680000301 A CN200680000301 A CN 200680000301A CN 100537048 C CN100537048 C CN 100537048C
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Abstract
The present invention provides a liquid application device, an inkjet recording apparatus and a recording apparatus, which are capable of performing an adequate application initial operation according to the length of waiting time and power-off time, as well as a method of controlling the liquid application device. In the present invention, information on an end time of the previous processing for collecting liquid is read from a nonvolatile memory, current time information indicating the current time is obtained, and information on a lapse of time from the end time of the previous collection to a start time of the current application. Thereafter, the number of preliminary rotations R of an application roller is decided based on the information on the lapse of time with reference to a look-up table. Sequentially, the application roller is rotated by the decided number of preliminary rotations R to perform preprocessing operation.
Description
Technical field
The present invention relates to a kind of liquid application device and ink-jet recording apparatus.Especially, the present invention relates to a kind ofly for specific purpose liquid is coated to liquid application device and ink-jet recording apparatus on the medium, this specific purpose for example is to contain in utilization to promote condensing of pigment when pigment writes down as the printing ink of coloured material.In addition, the invention still further relates to a kind of method of controlling this liquid application device.
Background technology
As everyone knows,, make the treatment fluid that the coloured material of printing ink is insoluble or condense, improve image fastness such as record quality such as bleeding, concentration, color harmony print through and resistance to water, against weather and so on for ink-jet recording apparatus such as printer.
It is this treatment fluid to be sprayed onto on the recording medium in the mode the same with ink-jet by means of record head that this treatment fluid is coated to one of method on the recording medium.Yet, in this method, produce the mist of treatment fluid owing to spraying, so might cause spray nozzle clogging because of the mist of this treatment fluid.In addition, for from record head inject process liquid stably, in the viscosity of treatment fluid, surface tension, solution composition etc., will produce many restrictions.
Relative therewith, known have a kind of cylinder that utilizes that treatment fluid is coated to method on the whole recording medium.Figure 34 is the drawing in side sectional elevation that expression makes the critical piece of treatment fluid applying mechanism in this way, in the drawings, twines recording medium 63 by means of compressing chuck 62 on the air roll 61 that rotates by the motor (not shown).In addition, treatment fluid 65 is contained in coating (coating) unit 64.Be stirred and supply to conveying/filming roller 68 by stirring/donor rollers 66 these treatment fluids 65.Then, conveying/filming roller 67,68 makes treatment fluid 65 form film on the rolling drum surface of application roll 69.Application roll 69 is while rotating by being pressed on the recording medium 63 that is wound in the air roll 61 that is rotating, and treatment fluid 65 is coated on the surface of recording medium 63.Meanwhile, record head 70 carries out record by ink-jet on the surface of the recording medium 63 of coated treatment fluid 65.As mentioned above, apply the method for treatment fluid, come the method for inject process liquid to compare, just can apply the higher liquid of ratio of viscosities thinly and the mist of treatment fluid is produced with utilizing record head by using application roll in advance.
In addition, will be coated to liquid applying mechanism on the medium, the known mechanism that in Japanese patent application 2002-517341 communique, puts down in writing such as coating liquid such as treatment fluids as the rotation of following cylinder (roller).In Japanese patent application 2002-517341 communique, use and the contacted doctor of cylinder, so that coating liquid is stored between doctor and the cylinder, and along with the cylinder rotation is coated onto coating liquid on the cylinder.Then, along with this cylinder rotation, the coating liquid that has applied is transferred and is coated on the supporting dielectric that is transmitted between this cylinder and another cylinder.Equally, a kind of liquid applying mechanism that makes the thawless treatment fluid of dyestuff that applied in advance before record is disclosed in the flat 8-72227 communique of Japanese patent application.
In the aforesaid liquid applying mechanism because during not carrying out coat operations, do not have that this application roll is exposed in the extraneous air under the state that fresh treatment fluid supplies with into, so remain in the treatment fluid retrogradation on this application roll surface.The time that coat operations is interrupted is long more, and the degree that this treatment fluid viscosity increases is just big more.In other words, if be attached under the state on the application roll through the long time, then because the evaporation of the moisture equal solvent in the treatment fluid will make the viscosity of this treatment fluid rise at treatment fluid.When carrying out coat operations under the state that increases like this in viscosity, the coating liquid of appropriate amount just can not be rotated and can not be supplied with this application roll to application roll well.Therefore, the problem with regard to taking place to carry out unsatisfactorily at the coating of recording medium.
Self-evident, the problems referred to above not only take place in having the liquid applying mechanism of formation shown in Figure 34.Under the situation with formation described later in Figure 11,21,27 and 30, between position that stores treatment fluid and application roll, also exist various certainly and the contacted part of treatment fluid.This is a situation about having by the great majority structure that utilizes application roll to apply treatment fluid.In these and the contacted part of treatment fluid, owing to above-mentioned treatment fluid thickening has problems.For example known also have a kind of applying mechanism, and wherein treatment fluid is maintained at by a part that makes the liquid holding member and abuts against in the space that forms on the application roll, and is coated on the medium via application roll.In this mechanism, do not exist only on the application roll and be present in this liquid holding member and this holding member abuts against the also thickening of treatment fluid of the part on the application roll.This just produces and top described identical problem sometimes.
In order to address the above problem, knownly before the coat operations of incident record, apply initial operation (referring to Japanese patent application 2002-96452 communique) in advance.During this is meant during the standby of record operation (that is, do not carry out coat operations during in) periodically do not having to carry out the treatment fluid coat operations under the state of recording medium.In other words, driving comprises that each roller that is attached with treatment fluid of application roll is rotated, and treatment fluid is supplied to surface the flowing with the generation treatment fluid of these rollers.In Japanese patent application 2002-96452 communique, (when device starts) carries out this coating initial operation when device is energized.Above-mentioned coating initial operation circulates treatment fluid on the surface of application roll etc., so that the viscosity recovery of the treatment fluid on each roller is to normal value, and the coating condition is in can make application roll carry out the state of coat operations satisfactorily.
But, periodically apply in the formation of initial operation in during the record standby this, in some cases, especially the domestic consumer is nervous and bring uncomfortable feeling to noise.
As mentioned above, in Japanese patent application 2002-96452 communique, not only apply initial operation so that the treatment fluid thickening in handling under "on" position during the record standby, and rigidly connect at power supply and to apply initial operation so that handle the thickening of treatment fluid under off-position after logical.Turn off for a long time and power supply is turned off between the relatively short time both of these case at power supply, treatment fluid is to the level of adhesion difference of application roll.Therefore, should turn off the length of time according to power supply and carry out this coating initial operation.
Yet, in Japanese patent application 2002-96452 communique, do not carry out and turn off the length of time with power supply and apply initial operation accordingly.In other words.In Japanese patent application 2002-96452 communique, the rotational time of the application roll during recovery operation be configured to constant and no matter last time the outage and this energising between elapsed time for what.Therefore, sometimes when the elapsed time is longer, only by above-mentioned rotational time then the viscosity of the treatment fluid on the application roll just can not restore fully.And on the other hand, when the elapsed time more in short-term, even recovery operation carries out the time shorter than above-mentioned rotational time, the viscosity of the treatment fluid on the application roll also can be restored fully.Thereby in this case, the device starting just correspondingly postpones unnecessary rotational time.
As mentioned above, in Japanese patent application 2002-96452 communique, just do not consider the length (the perhaps thickening degree of treatment fluid) between the treatment fluid viscosity rising stage, be used to reduce the processing (processing of treatment fluid lowering viscousity) that is attached to the treatment fluid viscosity on the application roll etc.
Summary of the invention
One of purpose of the present invention just provides a kind of liquid application device and ink-jet recording apparatus, its can consider that the viscosity of treatment fluid take place to rise during length carry out suitable treatment fluid lowering viscousity and handle.
In addition, another object of the present invention just provides a kind of control method that the driving time that is used to reduce the lip-deep thickening thing that adheres to application roll can be reduced to minimal liquid application device and ink-jet recording apparatus and liquid application device.
A first aspect of the present invention provides a kind of liquid application device, comprise: the liquid coating element, be useful on liquid is coated to coating member on the medium, wherein the aforesaid liquid coating element is coated to aforesaid liquid on the above-mentioned medium by the rotation of above-mentioned coating member; Obtain the unit, be used to obtain the information that is associated during the later process of finishing dealing with that applies with the relevant last time liquid that utilizes the aforesaid liquid coating element to carry out; And processing unit, be used for controlling the processing that is used to reduce the viscosity that adheres to the aforesaid liquid on the above-mentioned coating member according to by the above-mentioned obtained above-mentioned information in unit that obtains.
A second aspect of the present invention provides a kind of liquid application device, comprising: the liquid coating element has and is used for liquid is coated to coating member on the medium; With the liquid holding member that is used under a part of state of contact of aforesaid liquid and above-mentioned coating member, keeping aforesaid liquid, by rotating above-mentioned coating member, the liquid that the aforesaid liquid holding member is kept via above-mentioned coating member is coated on the above-mentioned medium; Obtain the unit, be used to obtain with above-mentioned coating member on the viscosity of liquid rise take place during the information that is associated; And processing unit, be used for according to making the whole surface of above-mentioned coating member keep the liquid that the space kept to contact once with aforesaid liquid at least by the above-mentioned obtained above-mentioned information in unit that obtains.
A third aspect of the present invention provides a kind of liquid application device, comprising: the liquid coating element has and is used for liquid is coated to coating member on the medium; With the liquid holding member that is used under a part of state of contact of aforesaid liquid and above-mentioned coating member, keeping aforesaid liquid, by rotating above-mentioned coating member, the liquid that the aforesaid liquid holding member is kept via above-mentioned coating member is coated on the above-mentioned medium; Obtain the unit, be used to obtain the information that is associated during the later process of finishing dealing with that applies with the relevant last time liquid that utilizes the aforesaid liquid coating element to carry out; And processing unit, be used to make the processing of above-mentioned coating member rotation, wherein, utilize the above-mentioned coating member rotation number of above-mentioned processing unit or rotational time basis to decide by the above-mentioned obtained information in unit that obtains.
A fourth aspect of the present invention provides a kind of ink-jet recording apparatus, comprising: according to the described liquid application device of above-mentioned first technical scheme; And record cell, by spraying printing ink, document image on above-mentioned medium to the medium that has applied aforesaid liquid by the aforesaid liquid applying device from record head.
A fifth aspect of the present invention provides a kind of control method of liquid application device, this liquid application device has and is used for liquid is coated to coating member on the medium, by rotating above-mentioned coating member aforesaid liquid is coated on the above-mentioned medium, may further comprise the steps: obtain the information that is associated during the later process of finishing dealing with that applies with the relevant last time liquid that utilizes the aforesaid liquid coating element to carry out; And according to rotating above-mentioned coating member by the above-mentioned obtained above-mentioned information of step that obtains.
A sixth aspect of the present invention provides a kind of control method of liquid application device, this liquid application device has and is used for liquid is coated to coating member on the medium, by rotating above-mentioned coating member aforesaid liquid is coated on the above-mentioned medium, may further comprise the steps: obtain with above-mentioned coating member on the viscosity of the liquid relevant information between the emergence period that rises; And according to controlling the processing that is used to reduce the viscosity that adheres to the aforesaid liquid on the above-mentioned coating member by the above-mentioned obtained above-mentioned information of step that obtains.
Based on above formation just can be not only according to the viscosity of treatment fluid take place to rise during length but also be used to reduce the processing (processing of treatment fluid lowering viscousity) of the viscosity of the treatment fluid on the coating member according to the thickening degree of treatment fluid.Thereby, just can be used in and carry out the time that the treatment fluid lowering viscousity handles and reduce to necessary Min..
The present invention further feature will become apparent from the explanation (with reference to accompanying drawing) of following exemplary all embodiments.
Description of drawings
Fig. 1 is the integrally-built perspective view of the embodiment of expression liquid application device of the present invention;
Fig. 2 is the vertical profile side view of an example that expression comprises all configuration of components of application roll, count roll and liquid holding member;
Fig. 3 is the front view of liquid holding member illustrated in figures 1 and 2;
Fig. 4 cuts off liquid holding member shown in Figure 3 and the end-view of the end face that obtains along the IV-IV line;
Fig. 5 cuts off liquid holding member shown in Figure 3 and the end-view of the end face that obtains along the V-V line;
Fig. 6 is the vertical view of liquid holding member shown in Figure 3;
Fig. 7 is that expression makes the docking section of liquid holding member shown in Figure 3 abut against the left side view of the state on the liquid application roll;
Fig. 8 is that expression makes the docking section of liquid holding member shown in Figure 3 abut against the right side view of the state on the liquid application roll;
Fig. 9 be represent in embodiments of the present invention, in that formed liquid keeps filling in the space coating liquid by liquid holding member and application roll, and make liquid be coated to the longitudinal section of the state on the coating media by the application roll rotation;
Figure 10 represents in embodiments of the present invention, is being kept filling coating liquid in the space by liquid holding member and the formed liquid of application roll, and makes the longitudinal section of the state of application roll rotation under the state that does not have coating media;
Figure 11 is the figure of schematic configuration of the liquid flow path of the liquid application device of expression in the embodiment of the present invention;
Figure 12 is the block diagram of the schematic configuration of the control system in the expression embodiment of the present invention;
Figure 13 is the flow chart of the liquid coat operations order in the expression embodiment of the present invention;
Figure 14 is the flow chart of the processing procedure of the pre-treatment operation in the expression first embodiment of the invention;
Figure 15 is the flow chart of the processing procedure of the post-processing operation in the expression first embodiment of the invention;
Figure 16 is the flow chart of the processing procedure of the pre-treatment operation in the expression second embodiment of the invention;
Figure 17 is the preparation rotation of expression in the second embodiment of the invention and the flow chart of the processing procedure of reclaimer operation;
Figure 18 is the flow chart of the processing procedure of the pre-treatment operation in the expression third embodiment of the invention;
Figure 19 is the figure that determines the relation of application roll preparation rotational time being used in the expression first embodiment of the invention;
Figure 20 is the figure that determines the relation of application roll preparation rotational time being used in the expression second embodiment of the invention;
Figure 21 is the longitudinal section of the schematic configuration of the ink-jet recording apparatus in the expression four embodiment of the invention;
Figure 22 is the block diagram of the schematic configuration of the control system in the expression four embodiment of the invention;
Figure 23 is coat operations in the expression four embodiment of the invention and the flow chart that writes down the order of operation;
Figure 24 is the surface of the medium P of explanation when medium P is common paper and the key diagram of the applying step between the applicator surface;
Figure 25 is the surface of the medium P of explanation when medium P is common paper and the key diagram of the applying step between the applicator surface;
Figure 26 is the surface of the medium P of explanation when medium P is common paper and the key diagram of the applying step between the applicator surface;
Figure 27 is the sectional elevation of the structure of the ink-jet recording apparatus in the expression sixth embodiment of the invention;
Figure 28 is the block diagram of schematic configuration of the control system of expression tape deck shown in Figure 27;
Figure 29 is a flow chart of mainly representing the control of coating initial operation in the sixth embodiment of the invention;
Figure 30 is the sectional elevation of the printer arrangement in the expression seventh embodiment of the invention;
Figure 31 is a flow chart of mainly representing the control of coating initial operation in the seventh embodiment of the invention;
Figure 32 is the laying state do not operated of the applying mechanism time (for example, stand-by time) down and the figure of the relation of the viscosity increase of treatment fluid of expression application roll;
Figure 33 is the figure that little by little changes the mode of the operating time that applies initial operation in explanation an embodiment of the present invention, according to stand-by time; And
Figure 34 is that expression utilizes roller treatment fluid to be coated in the sectional elevation of the major part of the treatment fluid applying mechanism in the recording medium previous methods on the whole.
The specific embodiment
Below, with reference to accompanying drawing preferred implementation of the present invention is at length described.
Embodiments of the present invention are to have and will be coated in such as the liquid that applies liquid in the ink-jet recording apparatus and other tape decks of the applying mechanism on the coating media (recording medium), and the time of running is carried out suitable pre-treatment operation (also being referred to as to apply initial operation) as yet at applying mechanism.This applying mechanism both can be the mechanism that liquid keeps the space that has that will illustrate in first to the 5th embodiment, also can be that the coating liquid that is housed in the coating flow container that makes that will illustrate in the 6th and the 7th embodiment is exposed to the mechanism of extraneous air.
Just can understand from each embodiment described later, the invention is characterized in according to the viscosity of the treatment fluid on the coating member rise during length, control the processing (processing of treatment fluid lowering viscousity) that the viscosity that makes the treatment fluid on the coating member reduces.
Here, " viscosity of treatment fluid rise during length " is meant during the later process of finishing dealing with of last time relevant liquid coating.Hereinafter, be referred to as " elapsed time " or " stand-by time ".
In this manual, " during the later process of finishing dealing with of last time relevant liquid coating " comprises during (A) to (F) as following at least.
(A) last time reclaimer operation is finished and the elapsed time of this coat operations between beginning;
(B) last time rotary manipulation is finished and the elapsed time of this coat operations between beginning;
(C) last time coat operations is finished and the elapsed time of this coat operations between beginning;
(D) last time reclaimer operation finish and power connection between elapsed time;
(E) last time rotary manipulation finish and power connection between elapsed time; And
(F) last time coat operations finish and power connection between elapsed time.
In addition, " this coat operations begins " for example comprises: when pump begins to drive, when application roll begins to rotate or recording start command when input.
And then " processing of treatment fluid lowering viscousity " is meant " pre-treatment ", for example comprises: make the processing of coating member rotation or the processing that coating member is slided.
(first embodiment)
Fig. 1 is the integrally-built perspective view of the embodiment of expression liquid application device 100 of the present invention.Liquid application device 100 shown here generally comprises: be used for will predetermined coating liquid being coated to the liquid coating element on the medium (being also referred to as coating media hereinafter) as the object of application of liquid; With the fluid supply unit that is used for this liquid coating element is supplied with coating liquid.
The liquid coating element comprises: application roll 1001 cylindraceous, and in the face of the count roll cylindraceous (medium holding components) 1002 of application roll 1001 configurations and the roller driving mechanism 1003 that drives application roll 1001.Roller driving mechanism 1003 comprises: roll drive motor 1004 and have the power transmitting mechanism 1005 that is used for the driving force of roll drive motor 1004 is sent to the gear transmission chain of application roll 1001.
Fluid supply unit comprises: between the periphery of itself and application roll 1001, keep the liquid holding member 2001 of coating liquid, and to the liquid flow path described later 3000 (not shown in Fig. 1) of liquid holding member 2001 feed fluids.But application roll 1001 is supported by parallel axle respectively with free rotation mode with count roll 1002, but install with free rotation mode with respect to not shown frame at its two ends.Liquid holding member 2001 spreads all over whole length of application roll 1001 basically and extends, and by means of liquid holding member 2001 is installed on the frame in a movable manner with respect to the periphery contact of application roll 1001 or the mechanism that separates.
The liquid application device of present embodiment also comprises: be used for coating media is transported to the coating media feed mechanism 1006 of the pinch zones between application roll 1001 and the count roll 1002, this coating media feed mechanism 1006 is made up of pickup roller and miscellaneous part.The coating media that is provided for having applied liquid on the transport path of coating media, in the downstream of application roll 1001 and count roll 1002 is transported to the paper-discharge mechanism 1007 of paper feeder unit (not shown), and this paper-discharge mechanism 1007 has exit roller and miscellaneous part.Same with application roll etc., these paper-feeding mechanisms and paper-discharge mechanism carry out work by means of the driving force of the drive motors 1004 that is transmitted via power transmitting mechanism 1005.
It should be noted that coating liquid used in the present embodiment is is the liquid of purpose to comprise beginning of promoting when pigment writes down as the printing ink of coloured material that pigment condenses in utilization.
Below explanation applies an example of the composition of liquid.
Surfactant 1%
The water surplus
The viscosity of coating liquid is 5 to 6cP (centipoises) under 25 ℃.
Much less in an application of the invention, coating liquid is not limited to aforesaid liquid.As other coating liquid, for example can also adopt to contain to make dyestuff insoluble or make the liquid of the composition that dyestuff condenses.Apply liquid as other other, can also adopt the liquid of the composition that contains curl (medium is the phenomenon of curved shape) of suppressing coating media.
Make in coated liquid under the situation of water, the sliding capability of the contact zone of application roll of the present invention and liquid holding member mixes and is improved by reducing capillary composition and aforesaid liquid.In the example of the composition of above-mentioned coated liquid, glycerine and surfactant reduce capillary composition exactly.
Structure to each several part provides more detailed explanation now.
Fig. 2 is the vertical profile side view of an example that expression comprises all configuration of components of application roll 1001, count roll 1002 and liquid holding member 2001.
The structure of liquid holding member 2001 is shown in Fig. 3 to Fig. 8.
As shown in Figure 3, liquid holding member 2001 has the joint unit 2009 that the space forms substrate 2002 and is arranged on a lip-deep ring-type of space formation substrate 2002 in outstanding mode.Form in the substrate 2002 in the space, part longitudinally forms the recess 2003 that the bottom has circular-arc section in the central.Each straight line portion of joint unit 2009 is formed in the substrate 2002 attached to the space regularly along the marginal portion of recess 2003, and its each circumferential section is formed in the substrate 2002 so that an one marginal portion arrives another marginal portion via the bottom attached to the space regularly.Like this, in the time of on abutting against application roll 1001, the joint unit 2009 of liquid holding member 2001 just can with the shape of the periphery of application roll adaptably near thereon, this just can realize the butt joint of uniform pressure.
As mentioned above, about the liquid holding member in this embodiment, make the slitless connection parts 2009 that form as one utilize the loading force of spring members 2006 to abut against continuously on the outer circumference surface of application roll 1001 very close to each otherly.Its result, liquid keeps space S just to become by joint unit 2009, space forming the surface of substrate and the space of closure in fact that outer circumference surface limited of application roll 1001, and liquid is maintained in this space.Thereby at the rotation stopping period of application roll 1001, the outer circumference surface of joint unit 2009 and application roll 1001 just can be kept the close state of liquid, and can prevent reliably that leak of liquid from coming out.On the other hand, as described below when application roll 1001 rotation, coating liquid is by the outer circumference surface of application roll 1001 and the contact-making surface between the joint unit 2009, sticks on the outer circumference surface of application roll 1001 with the form of rete." at application roll 1001 stopping periods, its outer circumference surface and joint unit 2009 are in the close state of liquid " is meant as mentioned above and do not allow liquid to pass through border between this space inside and outside.In the case, the state of the mated condition of joint unit 2009 on the outer circumference surface that comprises joint unit 2009 and directly abut against application roll 1001, also comprise joint unit 2009 and abut against state on the outer circumference surface of application roll 1001 via intert therebetween liquid film because of capillarity is formed.
On the other hand, to shown in Figure 5,2009 region surrounded internal spaces of joint unit form substrate 2002 and are provided with liquid supply port 2004 and liquids recovery mouth 2005 as Fig. 3, and each mouthful forms by the hole that perforative space forms substrate 2002.These mouthfuls are communicated with the cylindric linking part 20041 and 20051 of the rear side that is arranged on space formation substrate in outstanding mode respectively.Linking part 20041 and 20051 is attached to liquid flow path 3000 described below successively.In this embodiment, liquid supply port 2004 is formed near the end (left part among Fig. 3) of 2009 region surrounded of joint unit, and liquids recovery mouth 2005 then is arranged near the other end (right part among Fig. 3) of same area.Liquid supply port and liquids recovery mouth are not limited to said structure, can also be formed on the optional position that the space forms substrate.In addition, the number of the number of liquid supply port and liquids recovery mouth can be arbitrarily.Liquid supply port 2004 is used to aforesaid liquid is kept the coating liquid that space S is supplied with to be provided from liquid flow path 3000.Liquids recovery mouth 2005 is used to allow liquid to keep the liquid in the space S to flow out to liquid flow path 3000.Flow out by feed fluid and permission liquid, make coating liquid in liquid keeps space S, flow to the right part from above-mentioned left part.
(coating liquid stream)
Figure 11 is the key diagram that the summary of the liquid flow path 3000 of the expression liquid holding member 2001 that is linked to coating liquid feed unit constitutes.
This liquid flow path 3000 has liquid supply port 2004 that links the space formation substrate 2002 that constitutes liquid holding member 2001 and the 1st stream 3001 of preserving the storage tank 3003 of coating liquid.In addition, liquid flow path 3000 has the liquids recovery mouth 2005 of binding space formation substrate 2002 and the 2nd stream 3002 of above-mentioned storage tank 3003.In this storage tank 3003, be provided with atmosphere connection port 3004, in this atmosphere connection port, be provided with the atmosphere communicating valve 3005 that between big pendular state and isolated from atmosphere state, switches.This atmosphere connection port 3004 preferably has labyrinth structure so that suppress evaporation.In addition, in the 1st stream 3001, be provided with transfer valve 3006, so that switch between the state that can be isolated mutually in state that the 1st stream 3001 and atmosphere interconnect and they.Linking in the 2nd stream 3002 has pump 3007, and it is used to make forcibly coating liquid and air to flow to desirable direction in liquid flow path 3000.In this embodiment, this pump 3007 makes liquid keep the direction of space S to the 2 streams 3002 to flow from the 1st stream 3001 through liquid.
In this embodiment, the 1st and the 2nd stream 3001,3002 pipes by circle form.Be formed on that the opening of the end of pipe separately is positioned at or near the bottom of storage tank 3003, so that the coating liquid in the storage tank 3003 can be fallen by full consumption.
For the transfer valve in this embodiment 3006, so long as the valve that switches between the state that can be isolated mutually in state that the 1st stream 3001 and atmosphere interconnect and they then can adopt various valves.Yet, in this embodiment, adopt triple valve shown in Figure 11.Triple valve 3006 has three mouths that are interconnected.Triple valve 3006 can make in three mouths two selectively with the 1st stream 3001 in storage tank side pipe 3011, liquid holding member side pipe 3012 and atmosphere connection port 3013 among certain two be communicated with.Switching by this triple valve 3006 allow pipe 3011 and 3012 connecting states that are allowed to be interconnected and manage 3012 and atmosphere connection port 3013 connecting state that is allowed to be interconnected between selectively switch.Like this, just can be selectively to keep by liquid holding member 2001 and application roll 1001 formed liquid space S supply with in the storage tanks 3003 coating liquid or from atmosphere connection port 3013 be taken into airborne a certain.The switching of triple valve 3006 is according to carrying out from the control signal of control module 4000 described below, so that apply the filling or the supply of liquid.
(control system)
Figure 12 is the block diagram that the summary of the control system in the liquid application device of this embodiment of expression constitutes.
Among Figure 12, reference marker 4000 is represented the control module as the control device of control whole liquid applying device.This control module 4000 has the CPU4001 that carries out various processing such as computing, control and judgement.In addition, control module 4000 has ROM4002, its preservation be used for by CPU4001 performed, the control program of Figure 13 to Figure 18 processing described later and in Figure 19 and Figure 20 lookup table described later.Control module 4000 also further has temporary transient preservation input data and the RAM4003 of the data that produced in the processing action of CPU4001 and nonvolatile memory 4012 such as flash memory, SRAM or the like.
This control module 4000 has the function that obtains the function of the information of representing the elapsed time and control the pre-treatment operation according to the information in expression elapsed time described later.
Comprise the input operation unit 4004 of the keyboard that is used for importing predetermined instruction or data etc. or various switches and show that the display unit 4005 of the input, setting etc. of various information such as liquid application device is connected to control module 4000.In addition, the detecting unit 4006 that comprises the sensor of the position that is used to detect coating media, the mode of operation of each several part etc. is connected to control module 4000.In addition, roll drive motor 1004, pump drive motors 4009, atmosphere communicating valve 3005 and transfer valve 3006 are connected to control module 4000 through drive circuit 4007,4008,4010 and 4011 respectively.
(liquid coat operations order)
Figure 13 is the flow chart of the processing procedure of liquid coating in the liquid application device of this embodiment of expression.Each step of prescribed liquid coating with reference to this flow chart hereinafter.
In case liquid application device is connected power supply, control module 4000 is just carried out following coat operations order according to flow chart shown in Figure 13.
(filling step)
In step S1, execution will apply liquid and be filled into filling step in the liquid retentive control space S.In this filling step, at first, make the atmosphere communicating valve 3005 of storage tank 3003 be open into atmosphere, simultaneously driving pump 3007 in the certain hour section.So, if keep not being filled with coating liquid in space S and the stream 3001,3002 at liquid, then its inner air is sent to storage tank 3003 and is expelled to atmosphere by means of pump, applies liquid simultaneously and is filled in the each several part.If each several part has been filled with coating liquid, then the coating liquid in the each several part flows so that coating liquid has suitable concentration and viscosity is supplied with.This initial actuating result just becomes coating liquid and is supplied to 1001 state of application roll, thereby just liquid can be coated on the coating media.
(applying step)
Be transfused to (step S2) when applying sign on, pump 3007 just begins to start (step S3) once more, and coating liquid circulates between storage tank 3003 and liquid holding member 2001 by coating liquid stream.Then, carry out the back with the pre-treatment (step S4) of narration to alleviate or to eliminate the influence that remains in application roll 1001 lip-deep liquid thickenings or adhesion.In case pre-treatment is finished in step S4, application roll 1001 is stopped.
It should be noted that " liquid thickening " means that solvent or moisture evaporate and the viscosity of aforesaid liquid is uprised from liquid such as pasty state, gel or solid shape material with predetermined composition, liquid becomes and has higher viscosity than the liquid that is contained in the liquid storage tank in other words." liquid thickening " also means the state that the reduction owing to temperature is risen the viscosity of liquid, and near the state that the difference that comes from freezing point produces, certain composition with the freezing point that is different from other compositions of aforesaid liquid solidifies the freezing point of this composition.In addition, " adhesion of liquid " mean that its viscosity becomes and be higher than the state of aforesaid liquid viscosity far away.
" thickening thing " is meant the liquid thickening and becomes pasty state or gel state and the material that forms, and " adhesion " then is meant the material with the viscosity after further rising from the viscosity of thickening thing.That is, the thickening thing when the liquid that in coat operations last time, remains in the application roll surface owing to place the water evaporates that caused and form during thickening for a long time.Adhesion forms when the viscosity of ratio of viscosities thickening thing further increases.
Again, in this manual, " pre-treatment " is exactly to be used to be reduced in the processing of finishing dealing with and being correlated with this liquid coating that last time the liquid coating was relevant begin the processing (lowering viscousity processing) of viscosity of treatment fluid that this section period is attached to the surface of application roll." pre-treatment " is exactly the processing that is used to reduce or remove the adhesion that is formed on the lip-deep thickening thing of application roll like this, in this manual.In pre-treatment, comprise and the relevant processing of pre-treatment operation whether should carry out this preparation rotation such as the preparation rotation of carrying out application roll 1001 and decision.Execution by this pre-treatment just can reduce thickening thing and the adhesion that is formed on application roll 1001 surfaces.In addition, for example uniformity of surface characteristic such as wettable is improved on the whole surface that can also spread all over application roll 1001.
Again, in this manual, " pre-treatment operation " is meant the operation of the lowering viscousity processing of carrying out the treatment fluid on the coating member, for example represents the relevant operation of cylinder rotation (preparation rotation) with the viscosity that is used to reduce application roll 1001 lip-deep treatment fluids, thickening thing and adhesion.In addition, " pre-treatment operation " also be illustrated in " the coating initial operation " that illustrates in the 6th and the 7th embodiment.
Incidentally, in Japanese patent application 2002-96452 communique, when not applying, directly liquid is coated to the cylinder that application roll on the medium maybe will apply liquid supply application roll, be soaked in the coating liquid of the scheduled volume that is housed in the liquid chamber and remain unchanged.At this moment, when not applying for a long time, the surface that will worry to be immersed in the cylinder in the coating liquid is because of coating liquid causes deterioration, will in surface characteristic, produce unbalanced, and may after coat operations in generation apply unbalanced.Thereby in this embodiment, the scheduled time when not applying is discharged coating liquid from liquid holding member 2001, and is recovered in the storage tank 3003.
In addition, in Japanese patent application 2002-96452 communique, when after device is de-energized placement for a long time, resetting, carry out coat operations (empty coating) without recording medium ground and control and make the lip-deep liquid of coating member return to normal regulation physical property values (such as viscosity etc.).In this control, because device must return to normal condition, so, also must carry out the very long time of interrupt operation (such as idle running etc.) in manufacturer is between the guarantee period even if for example the user does not almost use under the situation of equipment.
Yet, in this embodiment, before this coat operations, carry out pre-treatment operation, thereby reduce or remove thickening thing and the adhesion that is formed on the cylinder surface.Particularly, in this embodiment, as below will narrating, last time reclaimer operation concluding time and this elapsed time of coat operations between the time started according to coating liquid change the rotation of the application roll 1001 in the pre-treatment operation, so can carry out the pre-treatment operation with the suitable time that conforms to the elapsed time.
Thereby, just can suppress application roll 1001 surface deterioration that cause because of the coating liquid that remains in application roll 1001 surfaces after the recovery of coating liquid.In addition, owing to can reduce or remove thickening thing and the adhesion that is formed on application roll 1001 surfaces, so apply and have normal regulation physical property values the coating liquid of (such as viscosity etc.) on just can application roll 1001 surfaces when coat operations.And then, owing to can carry out pre-treatment operation with the suitable time that conforms to the elapsed time, thus reset the time even if under device is placed for a long time situation, also can shorten device, and then can also realize cost degradation.
In step S4, during current finishing dealing with, reduce or the application roll 1001 of having removed thickening thing and adhesion begins clockwise direction rotation (step S5) shown in the arrow of Fig. 2.Rotation by application roll 1001, be filled in liquid and keep coating liquid L in the space S to overcome the pressure of 2009 pairs of application roll 1001 of joint unit of liquid holding member 2001, and by the contact-making surface between the lower edge portion 2011 of application roll 1001 and joint unit 2009.The coating liquid L that is passed through adheres to the outer circumference surface of application roll 1001 with the form of rete.The coating liquid L that adheres to application roll 1001 is sent to the docking section between application roll 1001 and the count roll 1002.
Undertaken by the rotation of application roll 1001 though it is noted that above-mentioned pre-treatment operation, when application roll did not stop, operation can skips steps S5 and enter step S6.
Next, coating media feed mechanism 1006 is transported to contact-making surface between application roll 1001 and the count roll 1002 with coating media, so that coating media is inserted therebetween.Then, along with application roll 1001 and count roll 1002 rotations, coating media is transported to paper feeder unit (step S6).During this carried, the coating liquid that is applied on the periphery of application roll was transported to coating media P from application roll 1001 as shown in Figure 9.Self-evident, the means that are used for coating media is supplied to the contact-making surface between application roll 1001 and the count roll 1002 are not limited to above-mentioned feed mechanism.Can use any means.For example, can also use the manual supply mean that utilizes predetermined guiding parts in the lump complementaryly, perhaps use manual supply mean separately.
In Fig. 9, the dashed area of intersection represents to apply liquid L.It should be noted that the state that is showed for the coating liquid L in when coating explanation clearly, the thickness of the coating liquid layer in this figure on application roll 1001 and the coating media P is described more relatively greatly a lot than its actual (real) thickness.
Like this, the coating media P part of application of liquid carries on the direction shown in the arrow by the carrying capacity of application roll 1001, and simultaneously, the coating media P still part of uncoated liquid is transported to contact zone between coating media P and the application roll 1001.By carrying out this operation continuously or off and on, coating liquid just is applied on whole of coating media.
Subsidiary mentioning, Fig. 9 represents to be transferred to desirable coating state on the coating media P by joint unit 2009 and whole coating liquid L of being attached to application roll 1001.But the whole coating liquid L that have been attached to application roll 1001 in fact always are transferred on the coating media P.Particularly, in many cases, when application roll 1001 was left, coating liquid L still was attached on the application roll 1001, and remains in like this on the application roll 1001 at the coating media P that has carried.The residual quantity of coating liquid L on the application roll 1001 changes according to the material of coating media P and the small concavo-convex state on surface thereof.At coating media is under the situation of common paper, also remains on the periphery of application roll 1001 at coating liquid L after the coat operations
Figure 24 to Figure 26 be explanation medium P when being common paper applicator surface and dielectric surface between the key diagram of coating processing procedure.In these figure, liquid is represented with being coated with the zone of having expired black.
Figure 24 represents application roll 1001 and count roll 1002 state in the regional upstream of its pinch zones.In this figure, liquid is attached on the applicator surface of application roll 1001 in the small concavo-convex mode that covers applicator surface thinly.
Figure 25 is illustrated in the pinch zones of application roll 1001 and count roll 1002 state as the applicator surface of the surface of the common paper of medium P and application roll 1001.In this figure, abut against on the applicator surface of application roll 1001 as the protuberance on the common paper surface of medium P, and liquid penetrates into or is adsorbed in surface fiber as the common paper of medium P from contact portion immediately.The liquid that the applicator surface that is attached to application roll 1001 does not abut against on the part of protuberance on common paper surface just remains on the applicator surface of application roll 1001.
Figure 26 represents application roll 1001 and count roll 1002 state in the regional downstream of its pinch zones.This figure represents the distinct each other state of the applicator surface of medium and application roll 1001.The applicator surface that is attached to application roll 1001 not with those parts that the protuberance on common paper surface contacts on liquid just remain on the applicator surface.Liquid on the contact portion also remains on the applicator surface with very little amount.
Remain in the pressure that coating liquid on the application roll 1001 overcomes 2009 pairs of application roll 1001 of joint unit of liquid holding member 2001,, keep in the space S and turn back to liquid by the contact-making surface between the upper edge 2010 of application roll 1001 and joint unit 2009.The coating liquid that is returned mixes with the coating liquid that is filled in the liquid maintenance space S.
When under the state that does not have coating media, making application roll 1001 rotations as shown in figure 10, apply the return action of liquid too.Particularly, be attached to coating liquid on application roll 1001 peripheries by the surface, contact zone between application roll 1001 and the count roll 1002 because of the rotation of application roll 1001.Then, coating liquid is distributed between application roll 1001 and the count roll 1002, and remains on the application roll 1001.The coating liquid L that is attached to application roll 1001 enters liquid and keeps space S by the upper edge 2010 of joint unit 2009 and the contact-making surface between the application roll 1001, and mixes with the coating liquid that is filled in the liquid maintenance space S.
(end step)
In case the coat operations at coating media is finished as described above, just judge whether applying step can finish (step S7).When applying step did not finish as yet, operation turned back to step S6 and lays equal stress on the deposited step of overcoating till the whole coating of coating media part of needs coating is finished.When applying step finishes, make application roll 1001 stop (step S8), and the driving of pump 3007 is stopped (step S9).Then, operation moves to step S2, if input coating sign on, then repeating step S2 is to the operation of S9.On the other hand, when input coating sign on not, then carry out post processing, keep the reclaimer operation (step S10) of coating liquid of space S and liquid flow path to finish and to apply relevant processing such as being used for withdrawal liquid.
This reclaimer operation carries out as follows, and promptly atmosphere communicating valve 3005 and transfer valve 3006 open also driving pumps 3007 are so that liquid keeps the coating liquid influent storage tank 3003 in space S and the 2nd stream 3002.This reclaimer operation just can prevent or relax coating liquid keeps space S from liquid evaporation fully.Block connection between the 1st stream 3001 and the atmosphere connection port 3013 behind the reclaimer operation atmosphere communicating valve 3005 being closed and switch transfer valve 3006, so that storage tank 3003 cuts off from atmosphere.Its result just can prevent or alleviate coating liquid from 3003 evaporations of liquid storage tank.In addition, even if device is moving or the carrying medium dip, also can prevent or relax coating liquid fully and flow out to the outside.
In applying step, in coat operations last time, remain in application roll 1001 lip-deep coating liquid sometimes because of the off time with environment evaporates and thickening based on the basic comprising of the applying device of embodiment of the present invention discussed above.This evaporation and thickening will form thickening thing or adhesion on application roll 1001 surfaces sometimes.Hereinafter, an example of the pre-treatment in the embodiment of the present invention will be provided, on application roll 1001 surfaces, there are thickening thing or adhesion even if this pre-treatment can make, also can keep the performance of coat operations and can not worsen coating uniformity on the coating media P.
In this embodiment,, finish and this coat operations begins elapsed time between (beginning for the pump driving) here and decides the preparation rotation number R of application roll 1001 according to reclaimer operation last time as pre-treatment operation.The rotation number of R (number of times) indication application roll 1001.
Again, in this manual, " preparation rotation " is meant the rotation of the pre-treatment operation that is used for application roll, the in other words rotation of the application roll of carrying out exactly before actual coat operations.
Figure 14 is the flow chart of the processing procedure of the pre-treatment in this embodiment of expression.
In the step S3 of Figure 13, when the action of pump 3007 begins, in step S21, read and represent the last time last time recovery information finish time of the finish time of reclaimer operation from nonvolatile memory 4012.In addition, by with reference to by being built in the internal clocking in the liquid application device or having the current time information that time that the external equipment (not shown) of instrumentation function constantly obtained obtains the expression current time.By from above-mentioned current time information with last time reclaimed finish time information and obtain current time and last time reclaimed the difference of the finish time, obtain expression and last time reclaimed the elapsed time information in the elapsed time between the finish time and this coating zero hour and will be kept among the RAM4003.
In step S22, judge that according to the elapsed time information among the RAM4003 of being kept at whether pre-treatment operate needs.More specifically, judge exactly whether elapsed time Δ T reaches among the relation of the preparation rotation number of defined in the lookup table (LUT) of Figure 19 and time range, do not need to prepare the maximum time t of the time range of rotation
i(among Figure 19 60 seconds).When the result who judges is that elapsed time Δ T is greater than time t
iThe time, operation enters step S24 and determines the preparation rotation number R of application roll.On the other hand, be less than or equal to time t as elapsed time Δ T
iThe time, then do not carry out the preparation rotation of application roll and directly finish pre-treatment.In other words, according to LUT shown in Figure 19, at Δ T≤t
iUnder the situation of (=60 seconds), corresponding preparation rotation number R is 0 time, thereby does not just prepare rotation.
At elapsed time Δ T greater than time t
iThe time, with reference to the preparation rotation number R that is kept at the LUT among the ROM4002 and decides application roll according to elapsed time information shown in Figure 19.
According to LUT shown in Figure 19, the preparation rotation number under 60 seconds＜Δ T≤10 minutes situation is set as 3 times, and the preparation rotation number under 10 minutes＜Δ T≤24 hours situation is configured to 10 times.And then, at Δ T〉under 24 hours situations, the preparation rotation number is 100 times.Because the amount of elapsed time long more then thickening thing and adhesion is just many more, so the long more rotation number of just will preparing of elapsed time is set greatly more.
Owing to be to decide the preparation rotation number, so can carry out preparation rotation during the optimum according to the length in elapsed time according to the elapsed time.Thereby, under the situation of elapsed time weak point, just do not carry out long pre-treatment, so can be with the needed time minimization of pre-treatment.And then, because carrying out optimum pre-treatment according to the elapsed time operates, so just can suitably reduce or remove the thickening thing that is attached to application roll 1001 surfaces and adhesion and no matter the elapsed time how, and the coating that can alleviate after each elapsed time is unbalanced.And then, operate owing to carry out optimum pre-treatment, so, can seek the shortening of the starting time of liquid application device with regard to not needing to carry out too much pre-treatment according to the elapsed time.
It should be noted that only example of lookup table shown in Figure 19, the length of the number of partitions of time range, preparation rotation number and time range can and be set according to the environment that installs.That is, in this embodiment, importantly the preparation rotation number is changed according to the elapsed time, and use for this purpose be illustrated in the elapsed time when increasing the preparation rotation number increase the lookup table of this relation.
In step S24, make application roll 1001 be rotated in the preparation rotation number of the application roll 1001 that is determined among the step S23 by driven roller drive motors 1004.At this moment, application roll 1001 rotary speeies constant and no matter the preparation rotation number how.In the pre-treatment operation, application roll 1001 is rotated suitable number of revolutions and is coated on application roll 1001 surfaces will apply liquid, just can replace thickening thing and the adhesion that is attached to application roll 1001 surfaces with fresh coating liquid thus.
In other words, by above-mentioned preparation rotation, when application roll 1001 surfaces that adhering to thickening thing and adhesion were soaked in the coating liquid that remains in the liquid maintenance space S, above-mentioned thickening thing that adheres to and adhesion and the coating liquid phase that remains in the liquid maintenance space S were fused.Its result, above-mentioned thickening thing that adheres to and adhesion just are reduced or remove, and the viscosity of the lip-deep coating liquid of application roll just reduces.Except above-mentioned fused mutually, above-mentioned thickening thing that adheres to and adhesion also peel off from application roll 1001 sometimes.In this embodiment,, just keep space S to be transported to storage tank 3003 from liquid so peel off the thickening thing and the adhesion that get off owing in coating liquid stream, circulate at pre-treatment operating period coating liquid.Be transported to the thickening thing and the adhesion of storage tank 3003 and be housed in coating liquid phase in the storage tank 3003 fused and revert to coating liquid with debita spissitudo.
And then, be attached to the thickening thing and the adhesion on application roll surface, by the docking section between the upper edge 2010 of application roll 1001 and joint unit 2009 time, wiped off because of above-mentioned preparation rotation sometimes.In other words, by the rotation of application roll 1001, application roll 1001 surfaces and upper edge 2010 are slided and are being abut against each other and rub.Thereby when the thickening thing that is attached to application roll 1001 and adhesion arrival generation slip and application roll 1001 that rubs and the docking section between the upper edge 2010, thickening thing and adhesion peel off from the docking section.This phenomenon also betides the docking section between the lower edge portion 2011 of application roll 1001 and joint unit 2009.
When above-mentioned preparation rotation finishes, in step S25, stop the rotation of application roll 1001, with the elapsed time information zero clearing that is kept among the RAM4003.With the elapsed time erasing of information, make that elapsed time Δ T is judged as zero in step S22 by like this, so that next coat operations after the starting.This just can not prepare rotation and finish the pre-treatment operation, and enters next coat operations.
Then, post-processing operation (step S10 among Figure 13) in the present embodiment is described.
Figure 15 is the flow chart of the processing procedure of post-processing operation in the expression present embodiment.
When input does not apply sign among the step S2 at Figure 13, just begin to remain on the reclaimer operation of the coating liquid in the liquid holding member 2001.
Coating liquid reclaimer operation flows to storage tank 3003 so that apply liquid from pump 3007 with regard to driving pump 3007 at the beginning.In addition, if pump 3007 is not stopped at step S9, then omit this step.In the case, in case coating liquid reclaimer operation begins, handle just forwarding step S32 to.
In step S32, transfer valve (triple valve) 3006 is switched to and allows atmosphere connection port 3013 and pipe 3012 to be interconnected.That is, the supply passageway from storage tank 3003 to liquid holding member 2001 is cut off, thereby stops to apply the supply of liquid to liquid holding member 2001.At this moment, because pump 3007 flows liquid on the direction shown in the arrow in Figure 11, so be present in comprise liquid holding member 2001 interior, spread the coating liquid to each stream of the 2nd stream 3002 from liquid holding member side pipe 3012, be recycled to storage tank 3003.In addition, these streams are filled the air from atmosphere connection port 3013.
In step S33, stop the driving of pump 3007.As a result, storage tank 3003 just cuts off from the 2nd stream 3002.Pipe 3011 also cuts off from managing 3012 by transfer valve 3006.It should be noted that and to work as also that in step S32 transfer valve 3006 is switched and through stopping the driving of pump 3007 after the scheduled time.And then, for example, sensor is set in liquid holding member 2001 as whether being used to detect in liquid holding member 2001 parts of remaining coating liquid, so that stop pump 3007 according to this detection information.
In step S34, close atmosphere connection port 3004.In the case, storage tank 3003 is cut off from extraneous air.
In step S35, with reference to by being built in the internal clocking in the liquid application device or having the time that the external equipment (not shown) of instrumentation function is constantly obtained, this reclaims this recovery information finish time of the finish time and obtain expression, and this this recovery information finish time is kept in the nonvolatile memory 4012.The recovery information finish time that is kept in the nonvolatile memory 4012 is used to next pre-treatment operation.
As mentioned above, in the pre-treatment operation of present embodiment, by application roll 1001 rotations and elapsed time are prepared rotation number accordingly, the thickening thing and the adhesion that are attached to application roll 1001 are reduced or remove.In pre-treatment operation, even if remain in application roll 1001 lip-deep coating liquid because of the off time with environment evaporates and thickening, coating liquid also can upgrade by suitable preparation rotation.This just can be avoided making the thickening coating liquid that the coating performance of starting once more behind the applying device significantly worsens and the influence of adhesion, and can always provide consistent coating function.
It should be noted that the emphasis in the present embodiment is to decide the pre-treatment operating time according to the elapsed time.Thereby, in this embodiment, the preparation rotation number of application roll 1001 is changed, thereby the needed time is operated in the control pre-treatment.In this embodiment, controlling the preparation rotation number according to the elapsed time is a key element that is used to control the needed time of pre-treatment.
Thereby, operate the needed time though in this embodiment, control pre-treatment thus according to the preparation rotation number of elapsed time control application roll, the control of pre-treatment operating time is not limited thereto.For example, preparation rotary speed and preparation rotation interval by adjust application roll under the certain situation of the rotation number of application roll also can obtain the effect same with present embodiment.Above-mentioned preparation rotation is to instigate application roll rotation predetermined angular and rotating such intermittence rotation through carrying out next after the scheduled time at interval, that is, blanking time.In addition, in this embodiment, the preparation rotary speed of application roll or preparation rotation at interval can be in the pre-treatment operation be adjusted under the certain situation of the rotational time of application roll 1001.
In addition, in this embodiment, definite method in elapsed time is not limited to the aforesaid way that utilizes current time to obtain, also can adopt timer is set in liquid application device, obtains thus from the method in the elapsed time of last time reclaiming the finish time.
(second embodiment)
Figure 20 is the lookup table that is used for decision preparation rotation number (preparation rotational time) in the present embodiment.Pre-treatment in present embodiment operation be for do not use for a long time at device, for example Δ T more than or equal to 24 hours situation under discharge residue on the application roll and the liquid holding member in the thickening thing of coating liquid and dust attached to it.That is, this is to be used in the preparation rotation back of carrying out certain number of times, will to apply liquid and reclaim once control method at least.
Figure 16 is the flow chart of the processing procedure of the pre-treatment in the expression present embodiment.
In Figure 16, the processing of step S41, S42 and S45 to S47 is identical with the processing of step S21, S22 shown in Figure 14 and S23 to S25 respectively.
In this embodiment, the elapsed time information in the elapsed time when obtaining expression and last time reclaiming when finishing between (be here pump drive begin) with this coating beginning, and be kept at (step S41) among the RAM4003.Then, judge such as pre-treatments such as preparation rotation, reclaimer operations according to the elapsed time information among the RAM4003 of being kept at and whether operate needs.Judgement among the step S42 uses lookup table (LUT) shown in Figure 20 to carry out.Be judged as when not needing preparation rotation and reclaimer operation, do not preparing rotation and reclaimer operation and finish pre-treatment.
When being judged as needs preparation rotation and reclaimer operation, with reference to shown in Figure 20 being kept at the LUT among the ROM4002 and utilizing elapsed time information to judge that whether elapsed time Δ T is greater than 24 hours (step S43).Operation enters step S44 under the elapsed time, Δ T was greater than 24 hours situation, handles then entering step S45 under the elapsed time, Δ T was smaller or equal to 24 hours situation.
In step S44, prepare rotation and reclaimer operation according to flow chart shown in Figure 17.
In Figure 17, when preparation rotation and reclaimer operation begin, application roll 1001 is rotated 10 times (step S51) then stop (step S52).Because once will apply liquid is recovered to storage tank 3003 from liquid holding member 2001,, transfer valve (triple valve) 3006 is interconnected with pipe 3012 so being switched to permission atmosphere connection port 3013.At this moment, because pump 3007 flows liquid on the direction shown in the arrow in Figure 11, so be present in comprise liquid holding member 2001 interior, spread the coating liquid to each stream of the 2nd stream 3002 from liquid holding member side pipe 3012, be recycled to storage tank 3003.These liquid flow paths are filled the air from atmosphere connection port 3013.
When the coating liquid in liquid holding member 2001 later at the fixed time when the recovery of storage tank 3003 finishes, make pump 3007 stop (step S54) and transfer valve 3006 switched to allow pipe 3011 and pipe 3012 be interconnected (step S55).Then, driving pump 3007 (step S56) is filled in liquid maintenance space S and the stream 3001,3002 once more will apply liquid.Next, in step S57, application roll 1001 is rotated 10 times to finish preparation rotation and reclaimer operation, operation entering step S47 then.
In step S45, decide preparation rotation number R according to the elapsed time with reference to LUT, and the preparation rotation number R (step S46) that application roll 1001 rotations are determined.
When preparation rotation finishes, the rotation of application roll 1001 is stopped and will being kept at elapsed time information zero clearing among the RAM4003.
Elapsed time between when beginning with this coat operations when last time reclaim finishing is when longer, rotates and will be accumulated in the liquid holding member 2001 sometimes from the thickening thing of application roll 1001 surfacial spallings and adhesion or dust by preparation.Yet in the present embodiment, when the elapsed time was longer, after having carried out the preparation rotation, the coating liquid that remains in the liquid holding member 2001 was recovered once.Thereby this reclaimer operation just makes thickening thing and adhesion or dust be recycled to storage tank 3003.If after this reclaims, fill coating liquid once more, just coating liquid in shape can be supplied in the liquid holding member 2001.Like this, being supplied to the coating liquid on application roll 1001 surfaces also can be in shape.
Though it is noted that the preparation rotation number of step S51 and S57 is 10 times in Figure 17, the preparation rotation number is not limited to this numerical value.In addition, self-evident, the rotational time of the application roll among step S51 and the S57 not only can pass through rotation number, and can control at interval by preparation rotary speed and preparation rotation.In addition, in this embodiment,, also can make pump with action consistently though often make pump action and stop.
And then in this embodiment, important is not is the recovered frequency in the pre-treatment operation but will applies liquid be recovered in the storage tank before the preparation rotation of pre-determined number finishes this coat operations of back.Thereby, in this embodiment,, reclaim itself and also can carry out more than twice or twice though the recovery of the coating liquid in the pre-treatment operation is carried out once.
(the 3rd embodiment)
In first and second embodiments, after last time reclaiming end and having passed through the stipulated time, before this coating beginning, carry out the pre-treatment operation.On the other hand, in this embodiment, the elapsed time when (when the rotation that is used for the application roll of coat operations stops) and this coat operations begin when finishing according to the last time coat operations before the reclaimer operation last time between (when the rotation that is used for the application roll of coat operations begins) is controlled pre-treatment and operates.
Figure 18 is the flow chart of the processing procedure of the pre-treatment in the expression present embodiment.
When the action of pump 3007 among the step S3 at Figure 13 begins, in step S61 from nonvolatile memory 4012 read expression application roll 1001 stop constantly last time stop time information.In addition, by obtain the current time information of expression current time with reference to the external equipment (not shown) that is built in the internal clocking in the liquid application device or has an instrumentation function constantly.According to above-mentioned current time information with last time stopped time information and obtain current time and the difference that last time stopped the moment, obtain the elapsed time information in the elapsed time between the time started of representing time that application roll last time stops and this coating thus, and be kept among the RAM4003.
Then, with reference to LUT (step S62) shown in Figure 19, determine the preparation rotation number R (step S63) of application roll then.
Because the preparation rotation number is as described above according to deciding from elapsed time of coat operations last time, so also can not carry out suitable pre-treatment operation even if carry out reclaimer operation as post-processing operation.Above-mentioned pre-treatment operation was carried out according to the elapsed time that last time applies between concluding time and this coating time started.Thereby the coating liquid that just can reduce each elapsed time is unbalanced to the coating of coating media, and can further improve above-mentioned coating.
In step S64, roll drive motor 1004 is driven so that the preparation rotation number of the application roll 1001 that is determined among the application roll 1001 rotation step S63.At this moment, the rotary speed of application roll 1001 constant and no matter the preparation rotation number how.In the pre-treatment operation, the suitable number of revolutions of application roll 1001 rotations is coated on application roll 1001 surfaces will apply liquid, just can replace thickening thing and the adhesion that is attached to application roll 1001 surfaces thus with fresh coating liquid.Here, when the preparation rotation number that determines is zero, in step S64, just do not carry out the rotation of application roll in step S63.
When above-mentioned preparation rotation finishes, in step S65, stop the rotation of application roll 1001 and will be kept at elapsed time information zero clearing among the RAM4003.
Should be noted that, in this embodiment, be not after application roll 1001 stops in step S35 shown in Figure 15 but in step S8, this of the moment when this application roll 1001 of expression is stopped stops time information and is kept in the nonvolatile memory 4012.Perhaps also can in step S9, stop to carry out the preservation that this stops time information behind the pump 3007.For this preserves, with reference to being built in the internal clocking in the liquid application device or having the time that the external equipment (not shown) of instrumentation function constantly obtained and obtain expression this stops constantly this and stops time information.Stop time information then is kept in the nonvolatile memory 4012 this this.The time information that stops that being kept in the nonvolatile memory 4012 is used to next pre-treatment operation.
(the 4th embodiment)
Liquid application device shown in above-mentioned first to the 3rd embodiment is effective when being applied to ink-jet recording apparatus.The situation that is applied to ink-jet recording apparatus with regard to the aforesaid liquid applying device describes below.Yet, similarly used because the described coat operations of relevant first to the 3rd embodiment is controlled, so its explanation will be omitted.
Figure 21 is that expression possesses the figure that the summary of the ink-jet recording apparatus 120 of applying mechanism constitutes, and wherein, this applying mechanism has the formation roughly the same with the aforesaid liquid applying device.
In this ink-jet recording apparatus 120, be provided with the sheet feed stacker 102 of piling up many recording medium P, and the separate roller 103 of first quarter moon shape will be stacked on more than separation of recording medium P on the sheet feed stacker, every medium will be supplied to transport path.In transport path, dispose the application roll 1001 and the count roll 1002 of the liquid coating element that constitutes the aforesaid liquid applying mechanism.The recording medium P that supplies with from sheet feed stacker 102 is sent to the contact-making surface between two rollers 1001 and 1002.Rotation by roll drive motor makes application roll 1001 clockwise direction rotation in Figure 21, and conveying recording medium P will apply liquid on one side and be coated on the recording surface of recording medium P on one side.The recording medium P that has applied liquid is sent to the contact-making surface between transfer roller (transfer roller) 104 and the hold-down roller (pinchroller) 105.Subsequently, the counter clockwise direction of transfer roller 104 (in this figure) rotation is transported to recording medium P on the platen platform (platen) 106, and medium is moved to facing to the position as the record head 107 of the element of recording means.Record head 107 is ink jet print heads of nozzle that are used to spray printing ink of wherein having arranged defined amount.On perpendicular to the direction of figure paper in the sweep record face, ink droplet carries out record according to record data from the recording surface that nozzle is ejected into recording medium P at record head 107.Alternately duplicate record is operated and is utilized the conveying operations of the ormal weight of transfer roller 104 execution to form image on one side on recording medium on one side.When image forms operation, recording medium P is held in the downstream of the scanning area that record head is set in the transport path of recording medium exit roller 108 and row's paper prop up between the roller (sheetdischarging spur roller) 109, and are discharged on row's paper disc 110 by the rotation of exit roller 108.
As this ink-jet recording apparatus, can constitute the ink-jet recording apparatus of so-called all fronts type (full-line type), the record head that its use has the long size of the printing ink discharge nozzle that the Breadth Maximum of striding recording medium arranges writes down operation.
Figure 22 is the block diagram of the control system of the above-mentioned ink-jet recording apparatus of expression.In this figure, the key element illustrated as roll drive motor 1004, pump drive motors 4009 and atmosphere communicating valve 3005 and the relevant aforesaid liquid applying device of the key element of liquid applying mechanism is identical.
CPU5001 controls the driving of each key element of applying mechanism according to the program of the aftermentioned processing procedure relevant with Figure 23.CPU5001 also controls the driving of the LF motor 5013, CR motor 5015 and the record head 107 that are included in the recording means respectively via drive circuit 5012,5014 and 5016.Particularly, for example the driving by LF motor 5013 makes transfer roller 104 rotations, and the driving by the CR motor is moved the carriage that has carried record head 107.CPU5001 also realizes discharging from the nozzle of record head the control of printing ink.
Figure 23 is the flow chart of the process of the liquid coat operations of the expression ink-jet recording apparatus that uses present embodiment and subsidiary record operation.
In this figure, the processing of step S71 to S75 and step S78 to S80 respectively with step S1 to S6 shown in Figure 13, S8 to S10 is identical with step.That is, illustrated pre-treatment (step S4) is identical in the pre-treatment of this embodiment (step S74) and first embodiment.
In this embodiment, when receiving the instruction of opening entry (step S72), pump is moved (step S73), to carry out pre-treatment (step S74).Afterwards, coating media is by the pinch zones (step S75) between application roll 1001 and the count roll 1002 and this coating media is used for a series of step of liquid coat operations.After these applying step,, wherein, applied liquid (step S76) in the needs part of this recording medium in the operation of the enterprising line item of recording medium.Particularly, the recording medium P that 107 pairs of record heads are given with ormal weight by transfer roller 104 at every turn scan, and spray printing ink according to record data from nozzle in this scan period, form point so that printing ink is attached on the recording medium.Because this adhesion printing ink and the reaction of coating liquid are so just can improve concentration and prevent bleeding.The conveying by above recording medium repeatedly and the scanning of record head and at the enterprising line item of recording medium P, the recording medium that record has been finished is discharged on row's paper disc 110.
Finish when in step S77, being judged as record, carry out the later processing of step S78, finish this processing then.
(the 5th embodiment)
Although in first to fourth embodiment, driving pump 3007 is so that apply the circulation of liquid in pre-treatment operation, also not driving pump 3007 so that in the pre-treatment operation, do not circulate.That is, the emphasis of embodiment of the present invention is to operate by pre-treatment to reduce or remove thickening thing and the adhesion that is attached to the application roll surface.Because being supplied to liquid often, fresh coating liquid keeps the space, so preferably when the spin coated roller, carry out above-mentioned circulation.Yet, in embodiment of the present invention,, also can suitably reduce or remove thickening thing and the adhesion that is attached to the application roll surface even if when the spin coated roller, do not carry out above-mentioned circulation.
When not carrying out under the situation of above-mentioned circulation in pre-treatment operation, the time in Figure 13 between step S2 and the S3 carries out the pre-treatment operation and gets final product.
(the 6th embodiment)
Figure 27 is the drawing in side sectional elevation of the formation of the ink-jet recording apparatus in the expression sixth embodiment of the invention.
As shown in figure 27, printer 1 is as the ink-jet recording apparatus of present embodiment, generally comprises with paper feed unit 10, coating liquid coating element 20 and record cell 30 to constitute.Have the paper feed roller 12 with paper 11 of supply with paper feed unit 10 as recording medium.
Coating liquid coating element 20 possesses coating flow container 21, and it holds the coating liquid 22 of the compound that the coloured material that contains the dyestuff that makes in the printing ink or pigment condenses.This element 20 also possesses the suction roll 23 that is used to mix and aspirate coating liquid 22, control so that the coating liquid that is aspirated the film thickness monitoring roller 24 that forms the uniform thickness film on the application roll 25 and be used for be transmitted with paper 11 by the count roll 26 that is pressed on the application roll 25.
Figure 28 is the block diagram that the summary of the control system of expression tape deck shown in Figure 27 constitutes.In Figure 28, mark 100 expression is as the host apparatus of external input device, can provide with forms such as the computer that record data sent to printer 1, digital cameras.In printer 1, mark 210 expressions are connected to the interface unit of master computer 100 with input record data, the main control unit of mark 220 expression printers 1.In main control unit 220, the CPU of mark 221 expression microcomputer forms.ROM222 is a memory of preserving control program, needed table and other fixed datas carried out by CPU.RAM223 preserves zone that the record data receive from master computer 100 launch and the memory of employed variable the control of each unit.Nonvolatile memory 224 is as being provided with by the part of the storage area of CPU221 management with ROM222 and RAM223 conduct simultaneously.Even if memory 224 is the memories that also can keep being stored content in primary printer outage, and as aftermentioned among Figure 31, also be used for interim time information when keeping coating liquid applying mechanism is moved.Can use non-volatile ram (NVRAM), EEPROM etc. as nonvolatile memory.Mark 225 expression is used for the input block imported by the operator, and this input block possesses power switch and is used to the switch that begins to print etc.The timer of the time of the mark 226 expressions holding state that instrumentation coating liquid applying mechanism is failure to actuate as described in the embodiment of back.Mark 227 expressions are used to drive the drive circuit of various driver elements, particularly, and this circuit drives record head 230, tray motor 240, the applying mechanism drive motors 260 of carrying motor 250 and coating liquid applying mechanism being moved.
The following describes action with reference to the printer 1 of Figure 27 and the described present embodiment of Figure 28.Be incorporated in in the paper feed unit 10 with paper 11.This is sent by paper feed roller 12 with paper 11.On the other hand, the coating liquid 22 in the coating flow container 21 of coating liquid coating element 20 is aspirated by suction roll 23, and forms the coating liquid film with uniform thickness by using film thickness monitoring roller 24 that coating liquid is attached on the roller surface of application roll 25.Then, be coated to the posting field of using paper 11 by application roll 25 and count roll 26 coating liquid 22 evenlyly and thinly.Then, while be coated with coating liquid 22 is sent to record portion 36 by transfer roller 31 to 33 posting field with paper 11.Carry out this and transmit up to for till finishing with the coating of the coating liquid 22 of the whole posting field of paper 11, and the former record that do not carry out at this moment.When finishing with the coating of the coating liquid 22 of paper 11, transfer roller 31 to 33 is reversed rotation being back to and being transmitted with paper 11 the identical path, path come with paper 11.Then, when this reverse rotation, withdraw path 45 by guiding to paper with paper 11 with paper guide rail 42 change directions.By this operation, turn back to the record start position of posting field with the front end of paper 11.Afterwards, the moving back and forth of the carriage by record portion 36, record head is to scanning with paper 11, during this period, printing ink from record head be ejected into on the paper 11 and applied liquid 22 with the posting field of paper 11 on order carry out record.When with the record end on the paper 11, will be discharged to paper feeder unit 19 with paper 11 by exit roller 38 to 41.
As mentioned above, when being attached under the state of application roll effluxion at coating liquid, because water evaporates causes the thickening generation to produce the problem that the coating condition gradually changes.Figure 32 is the figure of the relation between being illustrated in applying mechanism for example the application roll viscosity that is in time (for example stand-by time) of the laying state that lays up and coating liquid increasing.Shown in figure 32, viscosity and time rise pro rata before certain special time.Then, if the time arrives or surpass this special time, then apply in the liquid nearly all evaporate the composition evaporation, only fixedness the solvent residue and do not have to flash to branchs and stay, become saturated so viscosity change is very little and apply liquid.
Thereby, in embodiments of the present invention, applying the liquid applying mechanism to applying the operating time of initial operation (also being referred to as the pre-treatment operation) before applying with paper, as shown in figure 33 according to changing step by step standing time or stand-by time.
Figure 29 is a flow chart of mainly representing the control of coating initial operation in the sixth embodiment of the invention.In this embodiment, under the state of the power connection of printer, followed in the time of the record operation of coat operations according to wait to change the coating initial operation time.
At first, in step 301 when input during recording start command, from host apparatus 100 for example master computer obtain record data.Then, in step 302, from memory, read the elapsed time of when applying the last time EO of liquid applying mechanism, counting, i.e. stand-by time twait.Then, judge whether this stand-by time is shorter than the 1st time t1 shown in Figure 33.This stand-by time twait be exactly application roll 25 last time rotation finishes the time elapsed time between when beginning with this rotation of application roll 25.This stand-by time twait be when the last time rotary manipulation of application roll 25 finishes the elapsed time during to this recording start command input.
If stand-by time twait is shorter than the 1st time t1, then operation enters step 304 to carry out the coating initial operation (pre-treatment) 1 of driving time T1.In this initial operation, coating liquid coating element 20 moves under the state of no paper.Particularly, make each roller that constitutes coating liquid coating element 20 be rotated (preparing rotation) exactly.Here, the driving time with step 304 is made as T1.Coating liquid 22 carries out this coating initial operation so that in each roller 23 to 26 cocycles, and can turn back to the coating liquid 22 on each roller its viscosity and is in state within the normal setting.
If stand-by time twait is longer than the 1st time t1 in step 302, then operation enters step 303, and judges that whether stand-by time twait likens to is the 2nd time t2 weak point of the 2nd threshold value.If stand-by time twait is shorter than the 2nd time t2, then operation enters step 305 to carry out the coating initial operation 2 of driving time T2.The difference of the operation in this operation and the step 304 is that driving time T2 is than the driving time T1 in the step 304 long (T2〉T1).This is that the result just operates and increases the duration of runs because the situation of the ratio of viscosities stand-by time of the coating liquid of each roller 23 on 26 of coating liquid coating element 20 when being lower than t1 further increases.This just can reliablely and stablely turn back to the coating liquid 22 on each roller 23 to 26 its viscosity and be in state within the normal setting.
If stand-by time twait is longer than the 2nd time t2 in step 303, then operation enters step 306 to carry out the coating initial operation 3 of driving time T3.The difference of the operation in this operation and the step 305 is that driving time T3 is than the driving time T2 in the step 305 long (T3〉T2〉T1).When stand-by time is t2 or t2 when above, the viscosity of the coating liquid 22 on each roller 23 to 26 of coating liquid coating element 20 further increases, and this will cause each roller to be adhered each other in some cases.In the case, driving time further increases, and the coating liquid 22 on each roller 23 to 26 is turned back to its viscosity is in state within the normal setting thereby just can stablize high reliability ground.
When the coating initial operation of any one finished in the step 304,305 and 306, operation entered step 307 paper used for recording being sent on the coating liquid coating element 20, and will apply liquid and be coated on the paper used for recording.When coating liquid when the coating of paper used for recording finishes (step 308), in step 309, the counter timer of instrumentation stand-by time is resetted and restarts.Its result just can instrumentation be used to determine to utilize the stand-by time of the coating initial operation of carrying out before that coating liquid coating element is carried out, the next coat operations at paper used for recording.Afterwards, operation enters step 310 and writes down operation to utilize record head, finishes this processing then.
As mentioned above,, just can carry out and the corresponding optimum coating initial operation of stand-by time separately, utilize application roll just can always keep constant to the coating condition that paper used for recording applies according to present embodiment.In addition, can be unmovable suddenly in the part of the holding state lower device that does not write down operation.And then in stand-by time in short-term, the coating needed time of initial operation also shortens, thereby can not cause the low of production capacity.
(the 7th embodiment)
Figure 30 is the sectional elevation of formation of the printer of expression seventh embodiment of the invention.In Figure 30, be used to the key element identical with the identical reference marker shown in Figure 27, and part is omitted its explanation with key element shown in Figure 27.The printer of present embodiment possess be used for by coating liquid applying mechanism will apply liquid be coated on the recording medium the coating path and not coating liquid coating need not to apply the path.Formation shown in Figure 30 is substantially the same with the formation that Japanese patent application 2002-137378 communique is put down in writing.
Coating liquid coating element 20 comprises sensor 27, and it is used to detect and is formed on marks such as for example painted on the back side of paper 11 and holes, and this is the difference with the 6th embodiment shown in Figure 27.Judge whether that according to content needs apply processing to this with paper by sensor 27 detected marks.In addition, rotatable switching pawl 28 is being set and to need not to apply transfer roller in the path also different on to 29 this point, wherein this switching pawl 28 is at working procedure of coating path (among the figure shown in the arrow A) with need not to apply to switch between the path (among the figure shown in the arrow B) and use the paper transfer path.
The following describes a series of records operations in the printer 1 of present embodiment with above formation.When being accommodated in being sent by paper feed roller 12 with paper 11 in the paper feed unit 10, sensor 27 detects the mark that is formed on on the precalculated position, paper 11 back side.When the result who detects for for example being when needing the common paper of coating with paper 11, make switching pawl 28 rotate among the figure position shown in the dotted line guiding to the working procedure of coating path A with paper 11.At this moment, the coating liquid 22 in the coating flow container 21 of coating liquid coating element 20 is aspirated by suction roll 23, and by film thickness monitoring roller 24 film of the coating liquid 22 with uniform thickness is formed on the roller surface of application roll 25.Then, evenly be coated to the posting field of using paper 11 by application roll 25 and count roll 26 coating liquid 22 thinly.What be coated with coating liquid 22 is sent to the posting field of record portion 36 with paper 11 by transfer roller 31 to 33.Afterwards, by moving back and forth of carriage, record head scans, and during this period, printing ink is ejected into the usefulness paper 11 that has applied liquid 22, and order is carried out record.What record had finished is discharged to paper feeder unit 19 by exit roller to 38,39 with paper 11.
On the other hand, when the result of the detection by sensor 27 be with paper 11 for not needing the paper of use of liquid coating, for example, when title stock or waxy luster sheet etc., switching pawl 28 is placed in the drawings on the position shown in the solid line, need not to apply path B guiding to paper 11.Then, with the coating liquid coated same mode of situation, will deliver to the posting field of record portion 36 with paper 11 by transfer roller 31 grades, with paper 11 enterprising line items and final the discharge with paper 11.
In the example of above explanation, express liquid coating needs or unwanted mark are formed on the assigned position of using paper 11 back sides, and detect this mark with toggle path by sensor.Yet the present invention is not limited thereto mode, also can will transmit with record data based on selected control signals with the paper kind of information of host apparatus such as being utilized master computer by the operator, and switching pawl can switch with the paper kind of information according to this.In addition, switching pawl also can be according to switching based on the control signal of cancellation pattern, and wherein, this cancellation pattern requires by operator's indication the liquid coating not to be needed.And then, also can make by do not hold with stationery with paper each with paper feed unit and working procedure of coating path with need not to apply the path and be mapped and be provided with.This just can prevent from because of switching pawl paperboard to take place.
Figure 31 is a flow chart of mainly representing the control of coating initial operation in the seventh embodiment of the invention.In this embodiment, consider that also the time that this printer power supply cuts off finds the solution stand-by time, so that be suitable for the coating initial operation of the stand-by time obtained.
That is, under the situation of the 6th embodiment, when the printer interface energize, can wait the instrumentation stand-by time by electronic timer.Yet when the dump of printer, unless just can not its stand-by time of instrumentation be installed by the battery that timer is used in printer.For this reason, when the dump of printer, just can't be placed standing time how long by the instrumentation indication device.In the past, as mentioned above, when power connection, apply initial operation without exception and no matter power cut off time during.In addition, owing to do not know coating liquid thickening and be adhered to what degree, so just need carry out the coating initial operation that driving time is a maximum duration.In this embodiment,, just can carry out thus and the corresponding best coating initial operation of coating liquid thickening state even if after power supply is switched on, also can accurately judge stand-by time.
At first, in step S501, when the input recording start command, just obtain record data, and obtain the date and time information on days (step S502) that transmits with record data from host apparatus 100.Then, upgrade the date and time information on days in the memory that is kept at printer according to obtained information, and the moment of timer is upgraded, this just makes the timer of printer can instrumentation add the time of the time durations during the dump.
Thereby, in step S504, judge whether to answer coating liquid coating based on the paper used for recording kind of information that is attached to the record data that transmits from master computer.It is noted that and under the situation that as shown in figure 30 judgement constitutes, just supply with, and judge mark on it by sensor 27 with paper 11.
When in step S504, being judged as when answering coating liquid coating, in step S505 the read printer timer through moment of upgrading and be kept at expression final days of time of finishing of coat operations behind the date and time information last time in the nonvolatile memory 224, from this two groups days date and time information calculate stand-by time twait.Like this, this stand-by time just can be used as the stand-by time that has added during the dump.
Following step 506 to 512 with step 302 shown in Figure 3 to 308 identical, and omission explanation.
When in step S512 when the coat operations of recording medium finishes, in step S513, read current time from the timer of printer, this current time of reading is used to upgrade date and time information and being stored in the nonvolatile memory 224 on final days.This just can calculate the stand-by time that is used for next coat operations.The date and time information on final days of storage coat operations in nonvolatile memory 224 like this.Thereby, even if information dropout under the situation that power supply disconnects, also can prevent final date the time.Its result is even if reopen and must also can accurately calculate stand-by time under the situation of coating liquid coating before the record operation at power supply.The difference of thickening degree that just can cause according to the difference of the stand-by time that comes from the liquid applying mechanism thus, on the application roll is controlled to reach best coating initial operation.
Do not need liquid when coating when being judged as in step S504, operation enters step S514, skips the coating initial operation and to the line item operation of going forward side by side of the coat operations of recording medium.
The control that it should be noted that the coating initial operation is not limited to three phases.In addition, the control of coating initial operation is not limited to the driving time of application roll.For example, can also control the rotary speed of application roll.As mentioned above, apply the viscosity that initial operation will reduce the coating liquid on the element that is attached with coating liquid in the applying mechanism such as application roll according to stand-by time.So, drive control and change the degree that coating liquid lowering viscousity is operated, so that guarantee suitable coating liquid lowering viscousity according to stand-by time.
And then, in stand-by time the such condition of initial operation of not carrying out can also be set quite in short-term.
In processing shown in Figure 31, in step S503, each record operation is obtained the date and time information on days, and information updating becomes moment of printer timer at every turn should the date time.But, do not need all to upgrade at every turn, and can adopt following mode.Promptly only obtain days first during date and time information behind power connection, information updating becomes the moment of printer timer in the time of just should the date.In addition, to apply startup beamhouse operation such as the coating initial operation of liquid applying mechanism and the cleaning of record head and data conveying operations be parallel or carry out in turn that all it doesn't matter.But, operate by parallel, just can shorten total time-write interval (production capacity).And then for convenience of explanation, present embodiment just applies liquid and is illustrated to the working procedure of coating of recording medium and the example that utilizes the record operation of record head on recording medium to carry out in turn.But these operations also can walk abreast and carry out.
In above-mentioned first to the 7th embodiment, " processing relevant with the coating of liquid last time finish and the processing relevant with this liquid coating between beginning during " be defined as " elapsed time " or " stand-by time " (it is called the former definition).But, in the present embodiment, carry out at once behind power connection in the mode of pre-treatment, " between processing end relevant with the coating of liquid last time and the power connection during " also can be defined as " elapsed time " or " stand-by time " (it is called the latter's definition).Even if in the latter's definition, " processing relevant with the coating of liquid last time finishes " also the situation of definition with the former is identical, is meant that reclaimer operation finishes, spin coated finishes coat operations end etc.In this specification that comprises both definition, " elapsed time " or " stand-by time " is defined as " during the process after the processing relevant with the coating of liquid last time ".
In addition, illustrated concrete formation in above-mentioned first to the 7th embodiment, short of because of its combination conflicts just can be partially combined.
Though the present invention is illustrated with reference to each exemplary embodiment, should be understood to the present invention and is not limited to disclosed each exemplary embodiment.The scope of following claim will be given the wideest explanation so that contain this type of all modifications and the structure and the function of equivalence.
Claims (16)
1. a liquid application device is characterized in that, comprising:
The liquid coating element has and is used for liquid is coated to coating member on the medium, and wherein the aforesaid liquid coating element is coated to aforesaid liquid on the above-mentioned medium by the rotation of above-mentioned coating member;
Control module, be used to obtain the information that is associated during the later process of finishing dealing with that applies with the relevant last time liquid that utilizes the aforesaid liquid coating element to carry out, and be used for controlling the processing that is used to reduce the viscosity that adheres to the aforesaid liquid on the above-mentioned coating member according to obtained above-mentioned information.
2. according to the described liquid application device of claim 1, it is characterized in that:
The aforesaid liquid coating element also has the liquid holding member, is used for keeping keeping aforesaid liquid in the space by the liquid that the aforesaid liquid holding member is abutted against form on the above-mentioned coating member, and
By the rotation of above-mentioned coating member, the liquid that is kept by the aforesaid liquid holding member is applied on the above-mentioned medium via above-mentioned coating member.
3. according to the described liquid application device of claim 1, it is characterized in that: above-mentioned processing is the processing that makes above-mentioned coating member rotation.
4. according to the described liquid application device of claim 1, it is characterized in that: above-mentioned processing is the processing that above-mentioned coating member is slided.
5. according to the described liquid application device of claim 2, it is characterized in that, also comprise:
Storage unit is used to preserve aforesaid liquid;
The path is used to connect aforesaid liquid holding member and above-mentioned storage unit; And
Reclaim the unit, be used for during the represented above-mentioned process of obtained above-mentioned information between than the first phase under the long situation, carried out after the stipulated time making above-mentioned processing, by in the stream that comprises above-mentioned path and aforesaid liquid maintenance space, producing liquid stream, reclaim aforesaid liquid to above-mentioned storage unit from the aforesaid liquid holding member.
6. according to the described liquid application device of claim 2, it is characterized in that, also comprise:
Storage unit is used to preserve aforesaid liquid;
The path is used to connect aforesaid liquid holding member and above-mentioned storage unit; And
Cycling element is used in the stream that comprises above-mentioned path, above-mentioned storage unit and aforesaid liquid maintenance space aforesaid liquid being circulated,
Wherein, above-mentioned control module carries out above-mentioned processing in above-mentioned circulation.
7. according to the described liquid application device of claim 1, it is characterized in that:
Under the situation unlike second phase length during the represented above-mentioned process of obtained above-mentioned information, above-mentioned control module does not carry out above-mentioned processing.
8. according to the described liquid application device of claim 1, it is characterized in that: above-mentioned control module makes the driving time of above-mentioned coating member rotation control the time of carrying out above-mentioned processing by control.
9. according to the described liquid application device of claim 1, it is characterized in that: above-mentioned control module makes the rotary speed of above-mentioned coating member rotation control the time of carrying out above-mentioned processing by control.
10. according to the described liquid application device of claim 1, it is characterized in that: comprise the time that the power supply of aforesaid liquid applying device is switched off during the above-mentioned process.
11. according to the described liquid application device of claim 1, it is characterized in that, also comprise:
Utilize the aforesaid liquid coating element to apply the coating path of aforesaid liquid; With
What do not apply aforesaid liquid need not to apply the path,
Wherein, only under situation about applying on the above-mentioned medium, just carrying out above-mentioned processing through above-mentioned coating path.
12. a liquid application device is characterized in that, comprising:
The liquid coating element, has the liquid holding member that is used for that liquid is coated to the coating member on the medium and is used under a part of state of contact of aforesaid liquid and above-mentioned coating member, keeping aforesaid liquid, by rotating above-mentioned coating member, the liquid that the aforesaid liquid holding member is kept via above-mentioned coating member is coated on the above-mentioned medium;
Control module, be used to obtain with above-mentioned coating member takes place on the viscosity of liquid rise during the information that is associated, and be used for according to obtained above-mentioned information, control the whole surface that is used for making above-mentioned coating member and keep liquid that the space kept to contact once processing with aforesaid liquid at least.
13. a liquid application device is characterized in that, comprising:
The liquid coating element, has the liquid holding member that is used for that liquid is coated to the coating member on the medium and is used under a part of state of contact of aforesaid liquid and above-mentioned coating member, keeping aforesaid liquid, by rotating above-mentioned coating member, the liquid that the aforesaid liquid holding member is kept via above-mentioned coating member is coated on the above-mentioned medium;
Control module is used to obtain the information that is associated during the later process of finishing dealing with that applies with the relevant last time liquid that utilizes the aforesaid liquid coating element to carry out, and is used for making based on obtained information the processing of above-mentioned coating member rotation,
Wherein, described control module determines the rotation number or the rotational time of above-mentioned coating member based on obtained information.
14. an ink-jet recording apparatus is characterized in that, comprising:
Liquid application device according to claim 1; And
Record cell is by spraying printing ink, document image on above-mentioned medium from record head to the medium that has been applied liquid by the aforesaid liquid applying device.
15. the control method of a liquid application device, this liquid application device has and is used for liquid is coated to coating member on the medium, and this liquid application device is coated to aforesaid liquid on the above-mentioned medium by rotating above-mentioned coating member, it is characterized in that this method may further comprise the steps:
Obtain the information that is associated during the later process of finishing dealing with that applies with the relevant last time liquid that utilizes the aforesaid liquid coating element to carry out; And
According to rotating above-mentioned coating member by the above-mentioned obtained above-mentioned information of step that obtains.
16. the control method of a liquid application device, this liquid application device has and is used for liquid is coated to coating member on the medium, and this liquid application device is coated to aforesaid liquid on the above-mentioned medium by rotating above-mentioned coating member, it is characterized in that this method may further comprise the steps:
Obtain with above-mentioned coating member on the viscosity of liquid increase during relevant information; And
According to controlling the processing that is used to reduce the viscosity that adheres to the aforesaid liquid on the above-mentioned coating member by the above-mentioned obtained above-mentioned information of step that obtains.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005233269 | 2005-08-11 | ||
| JP233269/2005 | 2005-08-11 | ||
| JP348250/2005 | 2005-12-01 |
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| Publication Number | Publication Date |
|---|---|
| CN1993185A CN1993185A (en) | 2007-07-04 |
| CN100537048C true CN100537048C (en) | 2009-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006800003018A Active CN100537048C (en) | 2005-08-11 | 2006-08-10 | Liquid application device, inkjet recording apparatus, and method of controlling liquid application device |
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| CN (1) | CN100537048C (en) |
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| TWI815434B (en) * | 2021-05-20 | 2023-09-11 | 日商斯庫林集團股份有限公司 | Coating method and coating device |
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| CN112337751B (en) * | 2019-08-09 | 2022-02-15 | 竑腾科技股份有限公司 | Control method for preventing glue leakage of glue dispenser |
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| TWI815434B (en) * | 2021-05-20 | 2023-09-11 | 日商斯庫林集團股份有限公司 | Coating method and coating device |
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