JP7006249B2 - Drying equipment, printing equipment, processing liquid application equipment - Google Patents

Description

The present invention relates to a drying device, a printing device, and a processing liquid coating device.

As a printing device that applies a liquid to a continuous paper or the like to perform printing, there is a printing device that applies a liquid to the continuous paper or the like and then dries it using a drying device.

For example, a fixing means provided with a means for blowing warm air onto the recorded recording medium and a means for returning the warm air blown to the recording medium, and a fixing means for the hot air to flow in the transporting direction of the recording medium. It has a preheating means for heating the recording medium on the upstream side of the range, detects the temperature of hot air, calculates the dew point temperature, and controls the preheating means on and off based on the dew point temperature and the temperature of the preheating means. Is known (Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-230494

By the way, even if the generation of hot air starts, it takes time for the temperature of the hot air to rise to a predetermined temperature. There is a problem that it cannot be dried.

The present invention has been made in view of the above problems, and an object of the present invention is to enable sufficient drying immediately after the start of generation of warm air.

In order to solve the above problems, the drying apparatus according to claim 1 of the present invention is
A drying device that dries a drying object to which a liquid is applied and transported.
A means for generating warm air that is blown onto the object to be dried, and a means for generating hot air.
A contact heating means for contacting with the drying object and heating the drying object is provided.
During the period from when the hot air generating means starts generating the hot air until the hot air reaches a predetermined temperature, the hot air generating means blows the warm air onto the drying target and the contact heating means. The heating temperature of the contact heating means is set to be higher than the heating temperature of the contact heating means after the warm air reaches the predetermined temperature.

According to the present invention, it is possible to apply a sufficient amount of heat to dry immediately after the start of generation of warm air.

It is a schematic explanatory drawing of the printing apparatus which concerns on 1st Embodiment of this invention. It is an enlarged explanatory view of the drying apparatus in the 1st Embodiment. Similarly, it is explanatory drawing provided for the explanation of the winding angle around a heating roller and a heating drum. It is explanatory drawing which provides the explanation of the relationship between a heating roller diameter and a cock ring. It is a front explanatory view of the non-contact heating means. It is a perspective explanatory view of the non-contact heating means. It is a block explanatory diagram provided for the explanation of the part related to the heating control of the apparatus. It is a flow figure which provides the explanation of the heating control of a heating roller by a heating control unit. It is explanatory drawing of an example of the heating temperature of the heating roller provided to the same description. It is a flow figure which provides the explanation of the heating control of the heating roller by the heating control part in the 2nd Embodiment of this invention. It is explanatory drawing of the non-contact heating means of the drying apparatus which concerns on 3rd Embodiment of this invention. It is explanatory drawing of the non-contact heating means of the drying apparatus which concerns on 4th Embodiment of this invention. It is explanatory drawing of the non-contact heating means of the drying apparatus which concerns on 5th Embodiment of this invention. It is explanatory drawing of the non-contact heating means of the drying apparatus which concerns on 6th Embodiment of this invention. It is explanatory drawing of the drying apparatus which concerns on 7th Embodiment of this invention. It is explanatory drawing of the drying apparatus which concerns on 8th Embodiment of this invention. It is a main part explanatory drawing of the drying apparatus which concerns on 9th Embodiment of this invention. It is a main part explanatory drawing of the drying apparatus which concerns on 10th Embodiment of this invention. It is explanatory drawing of the processing liquid coating apparatus which concerns on 11th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. First, the printing apparatus according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic explanatory view of the device.

This printing device is an inkjet recording device, and is a liquid applying means for ejecting and applying ink, which is a liquid of a required color, to continuous book paper 110, which is a member to be dried to which a liquid is applied and conveyed. It has a liquid application unit 101 including a liquid discharge head.

In the liquid application unit 101, for example, full-line heads 111A, 111B, 111C, 111D for four colors are arranged from the upstream side in the transport direction of the continuous paper 110. Each head 111 applies a liquid of black K, cyan C, magenta M, and yellow Y to the continuous paper 110. The types and numbers of colors are not limited to this.

The continuous paper 110 is unwound from the original winding roller 102, is fed by the transport roller 112 of the transport unit 103 onto the transport guide member 113 arranged to face the liquid applying portion 101, and is guided by the transport guide member 113. Is transported (moved).

The continuous paper 110 to which the liquid is applied by the liquid application unit 101 is sent by the discharge roller 114 via the drying device 104 as the drying device according to the present invention, and is wound up by the take-up roller 105.

Next, the drying apparatus according to the first embodiment will be described with reference to FIGS. 2 and 3. FIG. 2 is an enlarged explanatory view of the drying apparatus, and FIG. 3 is an explanatory diagram provided for explaining the winding angle around the heating roller and the heating drum.

The drying device 104 applies the contact heating means 10 for heating the continuous paper 110 by contacting the surface opposite to the surface to which the liquid of the continuous paper 110 to be dried is applied, and the liquid of the continuous paper 110. It is provided with a non-contact heating means 31 that applies warm air and radiant heat to the surface in a non-contact manner.

Further, the guide rollers 17A and 17B for guiding the continuous book paper 110 to the contact heating means 10 and the guide rollers 17C to 17H for guiding the continuous book paper 110 that has passed through the contact heating means 10 are provided.

The contact heating means 10 includes a plurality of heating rollers 11A to 11E, which are first heating members having a curved contact surface 11a that comes into contact with the continuous paper 110, and a curved contact surface 12a that also comes into contact with the continuous paper 110. It includes a heating drum 12 which is a second heating member having the above. The diameters of the heating rollers 11A to 11E may be different. The heating rollers 11A to 11E and the heating drum 12 are all roller-shaped members.

The plurality of heating rollers 11A to 11E (hereinafter, referred to as "heating rollers 11"; the same applies to other members) and the heating drum 12 are arcuate (or circular) along the transport direction of the continuous paper 110. It is arranged in an arc shape).

As shown in FIG. 3, the transport path (transport path) 20 of the continuous paper 110 composed of the plurality of heating rollers 11, the heating drum 12, and the plurality of guide rollers 17 is the contact surface 12a of the heating drum 12. The contact distance L2 with the continuous paper 110 is configured to be longer than the contact distance L1 between the contact surfaces 11a of the heating rollers 11A to 11E and the continuous paper 110. The "contact distance" is the distance at which the continuous paper 110 is in contact with the peripheral surface in the direction (conveying direction) along the circumferential direction of the heating drum 12 and the heating roller 11. When the heating member is a curved surface member having a curved surface as a contact surface (for example, a curved surface heater 21), the distance is such that the heating member is in contact with the curved surface in a direction (conveying direction) along the circumferential direction of the curved surface.

Here, the winding angle θ2 of the continuous paper 110 with respect to the contact surface 12a of the heating drum 12 is larger than the winding angle θ1 of the continuous paper 110 with respect to the contact surface 11a of the heating roller 11 (θ2> θ1).

As shown in FIG. 3, the winding angles θ2 and θ1 (which are collectively referred to as “wrapping angle θ”) end contact with the point Ps at which the continuous paper 110 starts contacting the contact surfaces 12a and 11a. The point Pe is the meaning of the angle formed with respect to the center O.

Therefore, when the winding angle θ becomes large, the contact distance becomes long if the diameter of the rotating body is the same, and the contact distance becomes long as the diameter of the rotating body becomes large even if the winding angle θ is the same.

In the present embodiment, the diameter of the heating drum 12 is larger than that of the heating roller 11 and the winding angle θ2 is larger than θ1, so that in any case, the contact surface 12a of the heating drum 12 and the continuous paper 110 are used. The contact distance L2 is longer than the contact distance L1 between the contact surface 11a of the heating roller 11 and the continuous paper 110.

As described above, even if the winding angle θ is the same, the larger the diameter of the rotating body, the longer the contact distance. Therefore, even if the heating drum 12 and the heating roller 11 have the same diameter and the winding angle θ2 is larger than θ1, the contact distance L2 between the contact surface 12a of the heating drum 12 and the continuous paper 110 is the contact of the heating roller 11. The contact distance between the surface 11a and the continuous paper 110 is longer than the contact distance L1.

In this way, the transport path 20 is such that the contact distance L2 between the contact surface 12a of the heating drum 12 and the continuous paper 110 is longer than the contact distance L1 between each contact surface 11a of the heating roller 11 and the continuous paper 110. By configuring, the cockling can be reduced and the drying efficiency can be improved.

That is, since the strength of the continuous paper 110 has decreased in a state where time has not passed since the liquid was applied, the circumference of the rotating body is covered over a wide range (long contact distance) on the back surface side of the continuous paper 110. It is difficult to make close contact with the surface (contact surface).

Therefore, in the initial state in which the applied liquid has not been dried, the winding angle θ of the continuous paper 110 around the heating roller 11 is reduced to shorten the contact distance.

Here, by increasing the curvature of the heating roller 11, the tension generated during the transportation of the continuous paper 110 changes from the pressing force at the contact portion with the heating roller 11, so that the contact state with the heating roller 11 becomes uniform. Become. In this state, the continuous paper 110 is free from cockling and wrinkles, and when it passes through the heating roller 11, the liquid on the continuous paper 110 can be uniformly supplied with the heat required for drying.

As a result, the continuous paper 110 whose cockling is suppressed and whose drying is progressing can be brought into close contact with the contact surface even if the contact distance with the rotating body is lengthened.

Here, an example of the relationship between the roller diameter of the heating roller 11 and the cock ring of the continuous paper 110 will be described with reference to FIG.

FIG. 4 shows the results of changing the diameter of the heating roller 11 to measure the height of the cock ring generated on the continuous paper 110 and the pitch of the cock ring, and confirming the presence or absence of the cock ring that can be visually recognized.

From this result, in this example, by setting the diameter of the heating roller 11 to 200 mm, the cockling height is almost halved as compared with the case where the diameter of the heating roller 11 is 250 mm, and the diameter of the heating roller 11 is 100 mm or less. By setting, you can see that the cock ring is gone.

Therefore, the diameter of the heating roller 11 is preferably 200 mm or less, more preferably 100 mm or less.

In the heating drum 12 arranged on the downstream side of the heating roller 11, heat can be supplied to the continuous paper 110 in a short time by lengthening the contact distance of the continuous paper 110, and the drying efficiency is improved. It can be improved and dried in a short time.

By increasing the number of heating rollers 11 to be brought into contact with each other to increase the amount of heat for drying, it is possible to increase the drying speed and ensure high productivity even for a thick continuous body.

Next, the non-contact heating means 31 will be described with reference to FIGS. 5 and 6. FIG. 5 is a front explanatory view of the non-contact heating means 31, and FIG. 6 is a perspective explanatory view of the non-contact heating means 31.

The non-contact heating means 31 includes a warm air generating means 40 and an infrared heater 42 (42A, 42B) which is a radiant heating means that also serves as a part of the warm air generating means 40.

The hot air generating means 40 includes a chamber 41 having an outlet (nozzle) 43 for blowing hot air 44 toward the continuous paper 110, a blower fan (blower) 48 for blowing air to the chamber 41, and the inside of the chamber 41. It is composed of an infrared heater 42 which is a radiant heating means for heating the air of the above with radiant heat.

The spraying position of the chamber 41 by the nozzle 43 is a region including the contact position between the heating roller 11 and the continuous paper 110. By blowing air at the contact position between the heating roller 11 and the continuous paper 110, the air containing the vaporized water can be blown off, and the vaporized water reattaches to the continuous paper 110, resulting in a decrease in drying efficiency. Can be suppressed.

The infrared heaters 42A and 42B are arranged on the upstream side and the downstream side of the chamber 41, respectively. Reflectors 46A and 46B are attached to the chamber 41 on the back side (opposite side of the continuous paper 110) of the infrared heater 42.

The chamber 41 is provided with a temperature sensor 45, which is a temperature detecting means for detecting the temperature of the hot air 44 to be blown. Further, a temperature sensor 51 for detecting the temperature of the heating roller 11 is provided.

With this configuration, in the non-contact heating means 31, air is blown into the chamber 41 and blown out from the nozzle 43 by turning on the blower 48 of the warm air blowing means 40 and blowing air into the chamber 41. .. At this time, when the infrared heater 42 is turned on, the side surfaces 41a and 41b of the chamber 41 are heated by the radiant heat of the infrared heater 42 to warm the internal air. As a result, the warm air 44, which is the air warmed from the nozzle 43 of the chamber 41, is blown toward the continuous paper 110.

The continuous paper 110 is also heated by directly applying radiant heat from the infrared heater 42.

In the non-contact heating means 31 of the present embodiment, since the infrared heater 42 is located outside the chamber 41 at a position facing the continuous paper 110 and close to the side surface of the chamber 41, the infrared heater 42 is arranged. The radiant heat of the heater 42 can be applied to the continuous paper 110, and the side surface of the chamber 41 can be heated by the radiant heat to warm the air inside the chamber 41. As a result, the infrared heating and the warm air heating of the continuous paper 110 can be performed by the common infrared heater 42, so that highly efficient non-contact heating can be realized.

Next, the portion related to the temperature control of the heating roller will be described with reference to the block explanatory diagram of FIG.

The heating control unit 50 inputs a detection signal of each temperature sensor 45 (45A to 45E) that detects the temperature of the hot air 44, detects the temperature of the hot air 44, and determines the temperature of the heating rollers 11 (11A to 11E). The heating roller 11 is controlled to reach the target temperature based on the detected temperature of the temperature sensor 51, which is the temperature detecting means for detecting.

Further, the heating control unit 50 heats the infrared heater 42 according to the detection temperature of the temperature sensor 52, which is a temperature detecting means for detecting the ON / OFF control (including air volume control) of the blower 48 and the temperature of the infrared heater 42. It also controls.

Next, the heating control of the heating roller by the heating control unit will be described with reference to FIGS. 8 and 9. FIG. 8 is a flow chart used for explaining the heating control, and FIG. 9 is an explanatory diagram of an example of the target temperature used for the explanation.

When the printing device including the drying device 104 is started, the heating control unit 50 turns on the infrared heater 42 and starts radiating infrared rays. Then, the blower device 48 is turned on and the blown air to the chamber 41 is started. As a result, the warm air 44 is blown out from the nozzle 43 of the chamber 41, and the temperature of the warm air 44 increases as the temperature inside the chamber 41 increases due to the radiant heat from the infrared heater 42.

Further, the heating roller 11 is also turned on to start heating. The order of turning on the infrared heater 42, the blower 48, and the heating roller 11 is not limited to the above description. For example, it is also possible to turn on the blower 48 after turning on the heating roller 11 to start blowing out the warm air 44.

Here, until the temperature Tw of the hot air 44 generated by the hot air generating means 40 reaches a predetermined temperature Ta (for example, 60 ° C.), the heating temperature Tb of the heating roller 11 is set to the temperature Tw of the hot air 44. It is made higher than the heating temperature Tc (Tb> Tc) after reaching the predetermined temperature Ta. Here, the heating temperature of the heating roller 11 is, for example, the temperature of the surface of the heating roller 11 or the temperature of the heater inside the heating roller 11.

Then, after the temperature Tw of the hot air 44 reaches the predetermined temperature Ta, the power supply to the heating roller 11 is controlled so as to be the heating temperature Tc according to the temperature detected by the temperature sensor 45. A plurality of the heating temperatures Tc can be set according to the temperature Tw of the hot air 44.

For example, as shown in FIG. 8, the heating temperature by the heating roller 11 is 160 ° C. (heating temperature Tb) until the temperature Tw (detected temperature by the temperature sensor 45) of the hot air 44 reaches 60 ° C. (predetermined temperature Ta). The heating by the heating roller 11 is controlled so as to be.

Then, after the temperature Tw of the hot air 44 reaches 60 ° C., the heating temperature becomes 140 ° C. when the temperature Tw of the hot air 44 is 60 ° C. or higher and less than 80 ° C. according to the temperature Tw of the hot air 44. In addition, when the temperature Tw is 80 ° C. or higher and lower than 100 ° C., the heating temperature is 120 ° C., and when the temperature Tw is 100 ° C. or higher, the heating temperature is 100 ° C.

That is, even if the infrared heater 42 constituting the hot air generating means 40 is turned on, the air in the chamber 41 does not immediately warm up, so that the hot air 44 does not reach the required temperature. Therefore, until the hot air 44 generated by the hot air generating means 40 reaches a predetermined temperature, a sufficient amount of heat is given to the continuous paper 110 by raising the heating temperature of the heating roller 11.

As a result, sufficient drying can be performed immediately after the start of generation of warm air, the start-up time of the device can be shortened, and the lead time until the start of transportation of the continuous paper (to be dried) can be shortened. Can be done.

It is not necessary to perform the above control for all combinations of the plurality of non-contact heating means and the plurality of contact heating means. For example, it is possible to control to raise the target temperature only for the heating rollers 11A to 11C on the upstream side.

Next, the heating control of the heating roller by the heating control unit in the second embodiment of the present invention will be described with reference to FIG. 10. FIG. 10 is a flow chart for explaining the heating control.

In the present embodiment, the elapsed time t from the start of the generation of the warm air until the predetermined time elapses from the start of the generation of the warm air, that is, the elapsed time t from the start of the generation of the warm air is the predetermined time t0 ( Until t> t0), the heating temperature Tb of the heating roller 11 is made higher than the heating temperature Tc (Tb> Tc) after the elapse of the predetermined time t0.

In this case, the time until the temperature Tw of the hot air 44 reaches the predetermined temperature Ta (predetermined time t0) can be measured in advance, so that the temperature sensor 45 does not detect the temperature of the hot air 44 but the temperature of the hot air 44 is not detected. It can be determined that the temperature Tw of 44 has reached the predetermined temperature Ta.

Even in this way, sufficient drying can be performed immediately after the start of generation of warm air, the start-up time of the device can be shortened, and the lead time until the start of transportation of the continuous paper (to be dried) can be set. Can be shortened.

When the hot air generating means 40 starts generating hot air, for example, when the drying device 104 is turned on, or when the printing device including the drying device 104 is started, power supply to the infrared heater 42 starts. When the printing is performed, when the transport of the continuous paper 110 is started, when the printing apparatus receives a printing job from the outside, and the like.

Next, the drying apparatus according to the third embodiment of the present invention will be described with reference to FIG. FIG. 11 is a front explanatory view of the non-contact heating means in the drying device.

In the present embodiment, instead of the blower device 48 of the first embodiment, a warm air generator 49 that generates warm air is provided. At this time, warm air from the warm air generator 49 is sent to the chamber 41, and this warm air is further heated by the infrared heater 42 in the chamber 41 and blown out as the warm air 44, and the continuous paper 110 Is sprayed on.

The hot air generator 49 includes a heater as a heat generating means and a blower fan as a blower means. For example, a heater generates heat when a voltage such as a nichrome wire connected to a power source is applied. The wind (air flow) generated by the blower fan is heated by the heater. Further, the warm air heated by the heater is further heated in the chamber 41, and the warm air 44 is blown out.

Next, the drying apparatus according to the fourth embodiment of the present invention will be described with reference to FIG. FIG. 12 is a front explanatory view of the non-contact heating means in the drying device.

In the present embodiment, instead of the blower 48 of the first embodiment, the warm air generator 49 for generating the hot air of the third embodiment is provided, and the warm air generated by the warm air generator 49 is warmed as it is. The wind 44 is configured to blow out from the nozzle 43 of the blowing portion 47.

In this case, the infrared heater 42 does not positively heat the air in the chamber 41.

Even in such a configuration, it takes a predetermined time for the heater of the hot air generator 49 to reach a predetermined temperature, so that the hot air generated from the hot air generator 49 reaches a predetermined temperature as in the above-described embodiment. Until then, the contact heating means (heating roller 11) is controlled so as to have a high heating temperature.

Next, the drying apparatus according to the fifth embodiment of the present invention will be described with reference to FIG. FIG. 13 is an explanatory diagram of the drying device.

The present embodiment includes a plurality of sets of an infrared heater 42 constituting the non-contact heating means 31, a chamber 41 having a nozzle 43, and contact heating means (heating rollers 11). The infrared heater 42 is located between adjacent sets at a position facing the non-contact region where the continuous paper 110 is not in contact with the heating roller 11.

In the portion between the heating rollers 11 and 11 where the heating rollers 11 do not contact, infrared rays from the two infrared heaters 42 and 42 can be irradiated, so that the drying target (here, the continuous paper) is dried more efficiently. It can be performed.

Next, the drying apparatus according to the sixth embodiment of the present invention will be described with reference to FIG. FIG. 14 is an explanatory diagram of the drying device.

In this embodiment, adjacent non-contact heating means 31, 31 are unitized. That is, a common infrared heater 42C is arranged between the chamber 41A on the upstream side and the chamber 41B on the downstream side, and the infrared heater 42C is a side wall 41b of the two chambers 41A and 41B. It is surrounded by 41a and a reflector 46C.

As a result, the air in the two chambers 41A and 41B can be heated by one infrared heater 42C, so that the infrared rays irradiated radially can be used more efficiently for generating warm air.

Next, the drying apparatus according to the seventh embodiment of the present invention will be described with reference to FIG. FIG. 15 is an explanatory diagram of the drying device.

A plurality of heating rollers 11 (11A to 11E) are arranged around the heating drum 12. The non-contact heating means 31 (31A to 31E) are arranged so as to face each heating roller 11.

Next, the drying apparatus according to the eighth embodiment of the present invention will be described with reference to FIG. FIG. 16 is an explanatory diagram of the drying device.

A plurality of heating rollers 11 (11A to 11E) are arranged around the heating drum 12. The non-contact heating means 31 (31A to 31E) are arranged between the heating rollers 11 and 11 and between the heating rollers 11 and the heating drum 12.

Here, the temperature is controlled by the combination of the non-contact heating means 31 and the heating roller 11 on the upstream side.

Next, the drying apparatus according to the ninth embodiment of the present invention will be described with reference to FIG. FIG. 17 is an explanatory diagram of a main part of the drying device.

In the present embodiment, a heating drum 72 is provided as a contact heating means that also serves as a transport drum for winding and transporting the continuous paper 110 to be dried. The heating drum 72 has, for example, a heat generating means 73 such as a halogen heater inside, and air is sucked from a suction hole 72a provided around the heating drum 72 to suck and hold the continuous paper 110 on the peripheral surface and rotate the continuous book. Transport the paper 110.

Then, one or a plurality of non-contact heating means 31 are arranged so as to face the region where the continuous paper 110 is in contact with the heating drum 72.

Although the heating drum 72 as the contact heating means is described here as an example of a suction drum that sucks air, it may be a heating drum that does not suck air.

Next, the drying apparatus according to the tenth embodiment of the present invention will be described with reference to FIG. FIG. 18 is an explanatory diagram of a main part of the drying device.

In the present embodiment, the platen 82, which is a contact heating means for guiding the transportation of the continuous paper 110 to be dried, is provided. The platen 82 has a platen heater 83 inside, and heats the continuous paper 110 conveyed on the platen 82.

Next, the treatment liquid coating apparatus according to the eleventh embodiment of the present invention will be described with reference to FIG. FIG. 19 is an explanatory diagram of the treatment liquid coating device.

The treatment liquid coating device 600 of the present embodiment relates to a coating device 602 (602A, 602B) for applying a treatment liquid to a continuous book paper 110 and the present invention for drying the continuous book paper 110 coated with the treatment liquid. It is equipped with a drying device 604. Further, it is provided with transport rollers 605 to 607 for guiding the continuous book paper 110. The drying device 604 has the same configuration as that of the first embodiment, but may be configured according to another embodiment.

Here, examples of the treatment liquid include a modifier that modifies the surface of the continuous paper 110 by applying it to the surface of the continuous paper 110.

The treatment liquid is composed of celluloses (which promote the penetration of water with respect to, for example, a surfactant (anion-based, cationic-based, nonionic-based, or a mixture of two or more of these)). A solution containing hydroxypropyl cellulose or the like and a base such as talc fine powder can be used. Further, fine particles may be contained.

In each of the above embodiments, the example in which the object to be dried is a continuous paper is described, but the present invention is not limited to this, and the member is not particularly limited as long as it is a member to be dried by the drying apparatus according to the present invention. For example, in addition to continuous paper, roll paper, a continuum such as a web, and a recording medium (printed matter) such as a long sheet material, a printed matter such as a wallpaper or a sheet for an electronic circuit board such as a prepreg may be used.

In addition to recording images such as characters and figures with liquids such as ink, the printing device uses ink or the like to print images that have no meaning such as patterns for the purpose of decoration and decoration. It may be applied as a liquid.

In the present application, the liquid applied to the object to be dried is not particularly limited, but is preferably one having a viscosity of 30 mPa · s or less at room temperature, under normal pressure, or by heating or cooling. More specifically, solvents such as water and organic solvents, colorants such as dyes and pigments, polymerizable compounds, resins, functionalizing materials such as surfactants, biocompatible materials such as DNA, amino acids and proteins, and calcium. , Solvents, suspensions, emulsions, etc. containing edible materials such as natural pigments, such as inks for inkjets, surface treatment liquids, components of electronic and light emitting elements, and formation of electronic circuit resist patterns. It can be used in applications such as liquids and material liquids for three-dimensional modeling.

When a liquid discharge head is used as a liquid applying means, a piezoelectric actuator (laminated piezoelectric element and thin film type piezoelectric element), a thermal actuator using an electric heat conversion element such as a heat generating resistor, and vibration are used as an energy generation source for discharging the liquid. Those using an electrostatic actuator consisting of a plate and a counter electrode are included.

Note that printing in the present application has the same meaning as image formation, recording, printing, printing, and the like.

10 Contact heating means 11A to 11E Heating rollers (contact heating means)
12 Heating drums 17A to 17H Guide rollers 31A to 31E Non-contact heating means 40 Warm air generating means 41, 41A, 41B Chamber 42, 42A, 42B Infrared heater (radiant heating means)
43 Nozzle 45, 45A-45E Temperature sensor 49 Hot air generator 50 Heating control unit 51, 52 Temperature sensor 72 Heating drum 82 Platen 83 Platen heater 101 Liquid application unit 103 Transport unit 104 Drying device 110 Continuously printed paper (for drying)

Claims (11)

A drying device that dries a drying object to which a liquid is applied and transported.
A means for generating warm air that is blown onto the object to be dried, and a means for generating hot air.
A contact heating means for contacting with the drying object and heating the drying object is provided.
During the period from when the hot air generating means starts generating the hot air until the hot air reaches a predetermined temperature, the hot air generating means blows the warm air onto the drying target and the contact heating means. The drying apparatus, characterized in that the heating temperature of the contact heating means is higher than the heating temperature of the contact heating means after the warm air reaches the predetermined temperature. A drying device that dries a drying object to which a liquid has been applied.
A means for generating warm air that is blown onto the object to be dried, and a means for generating hot air.
A contact heating means for contacting with the drying object and heating the drying object is provided.
During the period from when the hot air generating means starts generating the hot air until a predetermined time elapses , the hot air generating means blows the warm air onto the drying target and the heating temperature of the contact heating means. The drying device is characterized in that the temperature is higher than the heating temperature of the contact heating means after the predetermined time has elapsed. The warm air generating means is
With a blower fan that sends air,
The drying apparatus according to claim 1 or 2, further comprising a radiant heating means for heating the air. The warm air generating means has a chamber in which air is sent from the blower fan and a nozzle for blowing out the air is provided.
The radiant heating means is located outside the chamber and adjacent to the chamber.
The drying apparatus according to claim 3, wherein the air in the chamber is heated by the heat generated by the radiant heating means. With multiple chambers
The radiant heating means is arranged between two adjacent chambers.
The drying apparatus according to claim 4, wherein the air in the two chambers is heated by the radiant heat generated by the radiant heating means. The drying apparatus according to any one of claims 3 to 5, wherein the radiant heating means is arranged at a position facing the drying target, and radiant heat is applied to the drying target. The warm air generating means is
A warm air generator that includes the blower fan and generates the warm air,
A chamber provided with a nozzle for sending the hot air from the hot air generator and blowing out the hot air is provided.
The radiant heating means is located outside the chamber and adjacent to the chamber.
The drying apparatus according to claim 3, wherein the warm air sent to the chamber is further heated by the heat generated by the radiant heating means. The drying device according to any one of claims 3 to 7, wherein the radiant heating means is an infrared heater. The contact heating means is
A first heating rotating body that comes into contact with the surface opposite to the surface to which the liquid is applied to the drying object and is arranged on the opposite side of the warm air generating means with the drying object interposed therebetween.
A second heating rotating body, which is arranged downstream of the transport path to be dried and has a diameter larger than that of the first heating rotating body, is included.
The hot air generating means arranged on the opposite side of the first heating rotating body across the drying target starts to generate the hot air until the hot air reaches a predetermined temperature. The hot air generating means blows the warm air onto the drying target, and the heating temperature of the first heating rotating body is set to the heating temperature of the first heating rotating body after the warm air reaches the predetermined temperature. Than
The drying apparatus according to any one of claims 1 to 8. A liquid applying means for applying a liquid to the object to be dried,
A printing apparatus comprising the drying apparatus according to any one of claims 1 to 9. A treatment liquid application means for applying the treatment liquid to the drying target,
A treatment liquid coating device comprising the drying device according to any one of claims 1 to 9.

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