JP2022010148A - Post-processing device and recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a post-recording processing device capable of more appropriately suppressing deformation of a recorded recording medium and processing the recording medium.

SOLUTION: A post-recording processing device 200 (a reversing device 210, a staple device 220) includes: a post-processing part that performs post-processing of a recorded recording medium 12; and deformation suppressing means that suppresses deformation of the recording medium 12 in a conveyance route in which the recording medium 12 is conveyed or in a mounting portion on which the recording medium 12 is mounted. Deformation suppressing means is controlled based on a predetermined parameter related to recording processing for the recording medium 12.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to an aftertreatment device and a recording device.

Conventionally, there is known a post-processing apparatus including a mounting sheet processing unit that performs post-processing such as staple processing and shift processing on a paper on which an image is formed (see, for example, Patent Document 1). In the post-processing device, post-processing is performed in a state where a plurality of sheets on which an image is formed are placed on a processing tray.
As a device for forming an image on paper, for example, an inkjet printer provided with a recording head that ejects ink as a liquid as droplets is known.

Japanese Unexamined Patent Publication No. 2015-107840

By the way, when an image is formed using an inkjet printer, the paper on which the image is formed may be curled (a part of the paper is curved and deformed) due to absorption of ink (moisture) or drying of the ink. be.
For this reason, when the paper on which the image is formed by the inkjet printer is sequentially placed on the processing tray of the post-processing device, if the degree of curl of the previously placed paper becomes large, the paper to be conveyed later There is a problem that the paper is caught in the curled portion of the previously placed paper, and the paper becomes uneven or a transport problem occurs.

The present invention has been made to solve at least a part of the above-mentioned problems, and can be realized as the following application examples or forms.

[Application Example 1]
The recording post-processing apparatus according to this application example is a post-processing unit that performs post-processing of a recorded recording medium, a transport path through which the recording medium is conveyed, or a mounting unit on which the recording medium is placed. The deformation suppressing means for suppressing the deformation of the recording medium is provided, and the deformation suppressing means is controlled based on a predetermined parameter related to the recording process for the recording medium.

The recorded recording medium may be deformed (for example, curled) in the transport path to be transported or the mounting portion to be mounted due to the influence of the recording material (for example, ink). The degree of this deformation (deformation amount and stress due to deformation) is not constant, and varies depending on various parameters related to the recording process for the recording medium (for example, the material of the recording medium, the recording material, the recorded image, the recording environment, etc.). According to this application example, since the deformation suppressing means is controlled based on a predetermined parameter related to the recording process for the recording medium, it is possible to more appropriately suppress the deformation of the recording medium.

[Application example 2]
In the recording post-processing apparatus according to the above application example, the recording medium to be recorded is a recording medium recorded with water-based ink.

In recording using water-based ink, the water-based ink, which has a high affinity with the recording medium, penetrates into the recording medium, so the degree of deformation of the recording medium after recording and drying is greater than in recording using oil-based ink. .. According to this application example, it is possible to perform post-recording processing on a recording medium recorded with water-based ink in a state where deformation of the recording medium is more effectively suppressed.

[Application example 3]
In the recording post-treatment apparatus according to the above application example, the water-based ink is characterized by containing 50% by mass or more of water and containing a water-soluble organic solvent, a surfactant, and a pigment.

Like the recording post-treatment apparatus of this application example, the water-based ink used preferably contains 50% by mass or more of water and contains a water-soluble organic solvent, a surfactant, and a pigment.

[Application example 4]
In the recording post-processing apparatus according to the above application example, the predetermined parameter is characterized in that the physical property information of the recording medium is included.

The degree of deformation (deformation amount and stress due to deformation) of the recording medium after recording and drying may differ depending on the physical properties of the recording medium. According to this application example, in order to control the suppression strength of the deformation suppressing means for suppressing the deformation of the recording medium based on a predetermined parameter including the physical property information of the recording medium, the deformation of the recording medium is suppressed more appropriately. Is possible.

[Application Example 5]
In the recording post-processing apparatus according to the above application example, the predetermined parameter is characterized by including recording environment information of an environment for recording on the recording medium.

The degree of deformation (deformation amount and stress due to deformation) of the recording medium after recording and drying may differ depending on the environment (for example, temperature and humidity) in which recording is performed on the recording medium. According to this application example, since the suppression strength of the deformation suppressing means for suppressing the deformation of the recording medium is controlled based on a predetermined parameter including the recording environment information of the environment for recording on the recording medium, the recording medium is more appropriately used. It is possible to suppress the deformation of.

[Application example 6]
In the recording post-processing apparatus according to the above application example, the predetermined parameter is characterized by including recording data for recording on the recording medium.

The degree of deformation (deformation amount and stress due to deformation) of the recording medium after recording and drying may differ depending on the recording data (for example, recording area and recording density) for recording on the recording medium. According to this application example, in order to control the suppression strength of the deformation suppressing means for suppressing the deformation of the recording medium based on a predetermined parameter including the recording data for recording on the recording medium, the recording medium is more appropriately used. It is possible to suppress deformation.

[Application 7]
In the recording post-processing apparatus according to the above application example, the predetermined parameter is characterized in that the elapsed time from recording on the recording medium is included.

The degree of deformation (deformation amount and stress due to deformation) of the recording medium after recording and drying may differ depending on the elapsed time from recording on the recording medium. According to this application example, since the suppression strength of the deformation suppressing means for suppressing the deformation of the recording medium is controlled based on a predetermined parameter including the elapsed time from recording on the recording medium, the recording medium is more appropriately used. It is possible to suppress the deformation of.

[Application Example 8]
In the recording post-processing apparatus according to the above application example, the predetermined parameter is characterized in that the apparatus environment information of the environment including the transport route or the above-mentioned pre-described portion is included.

The degree of deformation (deformation amount and stress due to deformation) of the recording medium after recording and drying may differ depending on the device environment information of the environment including the transport path or the mounting portion. According to this application example, it is more appropriate to control the suppression strength of the deformation suppressing means for suppressing the deformation of the recording medium based on a predetermined parameter including the device environment information of the environment including the transport path or the mounting portion. It is possible to suppress the deformation of the recording medium.

[Application 9]
In the recording post-processing apparatus according to the above application example, the post-processing unit includes an intermediate processing unit for performing intermediate processing and a finishing unit for performing finishing processing, and the intermediate processing unit serves as the recording medium as intermediate processing. The finishing process performs staple processing, punching processing, or sorting processing as the finishing process on the plurality of recording media for which the intermediate processing has been completed. It is characterized by.

According to this application example, the post-processing unit includes an intermediate processing unit that performs intermediate processing and a finishing unit that performs finishing processing, and the intermediate processing unit performs reverse processing or drying of a recording medium as intermediate processing. The processing is performed, and the finishing unit performs a staple processing, a punch processing, or a sorting processing as a finishing process on the plurality of recording media for which the intermediate processing has been completed. That is, a plurality of processes can be performed on the recorded recording medium. Further, since the deformation of the recording medium is suppressed more appropriately, the occurrence of problems such as jams is suppressed even in the recording post-processing apparatus that performs a plurality of processes.

[Application Example 10]
The recording apparatus according to the present application example is characterized by including a recording post-processing apparatus according to the above application example and a line head for recording by applying water-based ink to the recording medium.

According to this application example, it is possible to perform post-recording processing in a state in which deformation of the recording medium after recording is more appropriately suppressed.

Schematic diagram showing the configuration of the recording device according to the first embodiment Schematic diagram showing the configuration of the printer Schematic diagram showing the configuration of the reversing device (recording post-processing device) Schematic diagram showing the configuration of the staple device (recording post-processing device) Schematic diagram showing an example of the curl state of the recording medium Schematic diagram showing an example of the curl state of the recording medium Schematic diagram showing an example of the curl state of the recording medium Schematic diagram showing an example of the curl state of the recording medium Schematic diagram showing an example of deformation suppressing means for suppressing deformation of a recording medium by wind pressure Schematic diagram showing an example of deformation suppressing means for suppressing deformation of a recording medium by wind pressure Schematic diagram showing an example of deformation suppressing means for suppressing deformation of a recording medium by pressing. Schematic diagram showing an example of deformation suppressing means for suppressing deformation of a recording medium by pressing. Schematic diagram showing an example of deformation suppressing means for suppressing deformation of a recording medium by its own weight (gravity) Schematic diagram illustrating the deformation suppressing means shown in FIG. 13 from the side surface. Schematic diagram showing an example of deformation suppressing means for suppressing deformation of a recording medium by its own weight (gravity) Schematic diagram showing an example of deformation suppressing means for suppressing deformation of a recording medium by humidification (adding water) Schematic diagram showing an example of deformation suppressing means for suppressing deformation of a recording medium by correcting deformation. Schematic diagram showing an example of deformation suppressing means for suppressing deformation of a recording medium due to drying Schematic diagram showing how curls are concentrated in a part of the recording medium. Schematic diagram of deformation suppressing means capable of suppressing deformation of a partially deformed recording medium

Hereinafter, embodiments embodying the present invention will be described with reference to the drawings. The following is an embodiment of the present invention and does not limit the present invention. In addition, in each of the following figures, in order to make the explanation easy to understand, it may be described on a scale different from the actual one.

(Embodiment 1)
<Recording device>
FIG. 1 is a schematic diagram showing the configuration of the recording device 1 according to the first embodiment.
The recording device 1 includes an inkjet printer 100 (hereinafter referred to as a printer 100) that records (prints) on a sheet-fed recording medium 12 such as printing paper, a recording post-processing device 200, and the like.
The recording post-processing device 200 includes a post-processing unit that performs post-processing of the recorded recording medium 12. Further, the recording post-processing apparatus 200 includes, as a post-processing unit, an intermediate processing unit for performing intermediate processing and a finishing unit for performing finishing processing. Specifically, the recording post-processing device 200 reverses the recorded recording medium 12 as an intermediate processing unit that reverses (turns over) the recording medium 12 recorded by the printer 100 as an intermediate process. A reversing device 210 provided with a transport path 18 and a stapling processing unit 36 as a finishing unit in which a recording medium 12 having been inverted as a finishing process after the intermediate processing are sequentially laminated and stapled in predetermined units are provided. It is composed of a staple device 220 and the like.

The "post-recording processing device" in the present invention indicates a device that performs post-processing on the recorded recording medium 12, and in the example of the present embodiment, the reversing device 210 and the staple device 220 correspond to this, but post-recording processing. The device is not limited to these, for example, a process of inserting and stacking interstitial sheets for each predetermined page, a punch process for punching punch holes, and a process of separating volumes for each predetermined unit (sort process). , It may be an apparatus that performs a process of bending a predetermined position and laminating.

2 is a schematic diagram showing the configuration of the printer 100, FIG. 3 is a schematic diagram showing the configuration of the reversing device 210, and FIG. 4 is a schematic diagram showing the configuration of the staple device 220.
The printer 100 is provided with a printer transfer path 17, and the reversing device 210 is provided with a reverse transfer path 18. Further, the stapler device 220 is provided with a stapler transport path 19. The printer transfer path 17, the reverse transfer path 18, and the stapler transfer path 19 constitute a transfer path indicated by a two-dot chain line that continues from the printer 100 on the upstream side of the transfer direction Y to the stapler device 220 via the reverse device 210. ing.

<Printer>
As shown in FIG. 2, the printer 100 includes a cassette 21, a feeding unit 22, a printer transport unit 23, a recording unit 24, a printer control unit 70, and the like.
The cassette 21 is an accommodating portion capable of accommodating the recording media 12 in a stacked state, and the printer 100 is provided with at least one (three in FIG. 2) detachably attached.
The feeding unit 22 feeds the recording medium 12 housed in the cassette 21 to the printer transport unit 23. The feeding unit 22 separates the pickup roller 26, which sends out the highest-level recording medium 12, and the recording medium 12 sent out by the pickup roller 26, one by one, among the recording media 12 arranged in a stacked state on the cassette 21. It is equipped with a separation roller pair 27. Further, the feeding unit 22 includes a feeding motor (not shown) for rotationally driving the pickup roller 26.

The printer transfer unit 23 conveys the supplied recording medium 12 to the recording unit 24, and sends the recording medium 12 for which recording is completed to the reversing device 210.
The printer transfer unit 23 rotates with the drive of a transfer motor (not shown) to transfer at least one (three in FIG. 2) transfer rollers 30 to transfer the recording medium 12 along the printer transfer path 17. It is equipped with. Further, at a position along the printer transport path 17, a drive pulley 32 and a driven pulley 33 on which an endless transport belt 31 is hung are provided. The recording medium 12 is conveyed with the rotation of the transfer belt 31 in a state of being electrostatically adsorbed on the support surface (outer peripheral surface) of the transfer belt 31.

The recording unit 24 includes a tank (not shown) for accommodating a liquid (hereinafter referred to as ink) as a recording material for recording on the recording medium 12, and an ink ejection head (not shown) for ejecting ink from the recording medium 12. I have. The ink ejection head is provided at a position facing the transport belt 31 with the printer transport path 17 interposed therebetween. The recording unit 24 attaches ink to the recording medium 12 supported and conveyed by the conveying belt 31 by ejecting ink based on the recording data, and records (forms an image based on the recording data). The recording unit 24 (ink ejection head) of the present embodiment is a so-called line head capable of simultaneously ejecting ink in a width direction intersecting (for example, orthogonal to) the transport direction Y of the recording medium 12.
The recording data is data for causing the printer 100 to execute recording, which is generated based on the image data (text data or image data) to be recorded on the recording medium 12.
The printer control unit 70 is, for example, a personal computer including an input unit, a display unit, a storage unit (not shown), and has a communication function with the inversion control unit 71 and the stapler control unit 72, which will be described later, and is linked to the printer control unit 70. Then, the drive control of the feeding unit 22, the printer transport unit 23, the recording unit 24, and the like is performed.

<Recording post-processing device (reversing device)>
As shown in FIG. 3, the reversing device 210 includes a first reversing unit 41, a second reversing unit 42, a reversing transport unit 52, a reversing control unit 71, and the like, and is a post-processing for reversing (turning over and transporting) the recording medium 12. The reverse transfer path 18 as a unit (intermediate processing unit) is configured.
The reversing transfer unit 52 has a transfer roller pair 56, a sensor 58, a guide flap 59, and the like.

The reversing transport path 18 is composed of a pre-reversing path 18a, a reversing path 18b, and a post-reversing path 18c.
The upstream end of the pre-reversal path 18a is connected to the printer transport path 17, and the recording medium 12 is introduced. A branch point A (upstream end of the inversion path 18b) is connected to the downstream end of the inversion path 18a.
The inversion path 18b is composed of a first branch path 44, a second branch path 45, a first confluence path 46, a second confluence path 47, a first inversion path 48, and a second inversion path 49. The first branch route 44 is a route from the branch point A to the first connection point B. The second branch route 45 is a route from the branch point A to the second connection point C. The first confluence route 46 is a route from the first connection point B to the confluence point D. The second confluence route 47 is a route from the second connection point C to the confluence point D. The first inversion path 48 is a path following the first connection point B. The second inversion path 49 is a path following the second connection point C.
The upstream end of the inversion path 18c is connected to the confluence point D (downstream end of the inversion path 18b), and the recording medium 12 inverted in the inversion path 18b is introduced. The downstream end of the inversion path 18c is connected to the stapler transfer path 19 of the stapler 220.

The transfer roller pair 56 is provided at various points in the reverse transfer path 18 and is driven by a transfer motor (not shown).
The sensor 58 is provided in the pre-reversal path 18a, the first reversal path 48, and the second reversal path 49, and detects the recording medium 12 conveyed to each path.
The guide flap 59 is provided at the branch point A, the first connection point B, and the second connection point C, and guides the transport direction of the recording medium 12 transported to each point. The guide flap 59 is rotated by a solenoid (not shown) to guide the transport direction of the recording medium 12 at the branch point of the transport path.
The reversing transfer unit 52 (conveying roller pair 56, sensor 58, guide flap 59, etc.) is driven and controlled by the reversing control unit 71, and transports the recording medium 12 along the reversing transfer path 18.

The first reversing section 41 is composed of a first branch path 44, a first reversing path 48, a first merging path 46, a transport roller pair 56 included in these paths, a guide flap 59, a sensor 58, and the like.
Further, the second reversing section 42 is composed of a second branch path 45, a second reversing path 49, a second merging path 47, a transport roller pair 56 included in these paths, a guide flap 59, a sensor 58, and the like. ..

The inverting control unit 71 has a communication function between the printer control unit 70 and the stapler control unit 72, which will be described later, and cooperates with each other to drive and control the transport roller pair 56, the sensor 58, and the guide flap 59, and the recording medium 12 Invert processing is performed.
Specifically, the recording medium 12 introduced into the pre-reversal path 18a is subjected to a reversal processing operation by the first reversal unit 41 (from the first branch path 44 to the first reversal path 48 and from the first confluence path 46 to the post-reversal path). The operation of transporting to 18c) and the inversion processing operation by the second inversion unit 42 (the recording medium 12 introduced in the pre-inversion path 18a is transferred from the second branch path 45 to the second inversion path 49 from the second confluence path 47. By repeating the operation of transporting the recording medium 12 to the path 18c after the inversion), the inversion process of the recording medium 12 is continuously performed.

<Recording post-processing device (staple device)>
The stapler 220 is a device in which recording media 12 inverted by the inversion device 210 are stacked in order, stapled in predetermined units, and discharged. As shown in FIG. 4, the stapler transport unit 35 and the rear It includes a staple processing unit 36, a stacker 37, a stapler control unit 72, and the like as a processing unit (finishing processing unit).

The stapler transport unit 35 transports the recording medium 12 introduced from the reversing device 210 to the staple processing unit 36, and sends the recording medium 12 for which the staple processing has been completed by the staple processing unit 36 to the stacker 37. The stapler transport unit 35 includes transport roller pairs 81, 82, a guide flap 83, a sensor 84, and the like.
The transport roller pairs 81 and 82 rotate along with the drive of the transport motor (not shown) to transport the recording medium 12 into the stapler 220 along the stapler transport path 19. When the sensor 84 detects the end of the recording medium 12 to be conveyed, the guide flap 83 rotates to guide the end side of the recording medium 12 toward the staple processing unit 36, and then opens the nip of the transfer roller pair 82. .. The recording medium 12 moves (slides) by its own weight to the staple processing unit 36 provided below. When the recording medium 12 moves (slides down) by its own weight, the transport roller pair 82 may be inverted to assist the recording medium 12 in easily moving to the staple processing unit 36.

The staple processing unit 36 includes a tray 85, a stapler 86, and the like. The tray 85 is provided so as to be inclined so as to be lowered from the transport roller pair 82 toward the stapler 86 so as to accommodate the recording medium 12 that moves by opening the nip of the transport roller pair 82. The tray 85 aligns the end portion of the recording medium 12 by the contact wall with which the end portion of the moving recording medium 12 abuts. The stapler 86 performs a staple process of binding the recording media 12 arranged on the tray 85 for each predetermined unit with staples (needle).

When the stapling process is completed, the transport roller pair 82 nips the recording medium 12 and drives it to rotate, and discharges the recording medium 12 for which the stapling process has been completed to the stacker 37 for stacking.
The stapler control unit 72 has a communication function between the printer control unit 70 and the inversion control unit 71, and is linked to the stapler transfer unit 35 (conveyor roller pairs 81, 82, guide flap 83, sensor 84, etc.) and the stapler control unit 72. Drive control of the stapler processing unit 36 (stapler 86) is performed.

<Ink>
Next, an ink (ink composition) as a recording material for recording on the recording medium 12 will be described.
The ink is preferably an aqueous ink composition in which the main solvent of the ink is water from the viewpoints of safety, handleability, and various performances (color development property, strike-through suitability, ink reliability, etc.). The strike-through aptitude refers to a property suitable for suppressing excessive penetration of ink into the recording medium 12 and strike-through.

As the water, it is preferable to use pure water such as ion-exchanged water, ultra-filtered water, reverse osmosis water, distilled water, or ultrapure water. In particular, it is preferable to use water that has been sterilized by irradiation with ultraviolet rays or addition of hydrogen peroxide, because it prevents the growth of mold and bacteria and enables long-term storage of the ink.
Further, from the viewpoint of ensuring an appropriate physical property value (viscosity, etc.) of the ink, and ensuring the stability and reliability of the ink, it is preferable that water is contained in the ink composition in an amount of 10% by mass to 75% by mass.

The inks include inks corresponding to full-color recording (image formation and printing) (for example, inks such as cyan, magenta, and yellow), black inks, white inks, and the like, and each of them contains a coloring material.
As the coloring material, it is preferable that the ink of each color contains at least one selected from pigments, dyes, metal oxides and the like.
The pigment is not particularly limited, and includes inorganic pigments for black, organic pigments, and organic pigments of various colors such as yellow, magenta, and cyan.
As dyes, various dyes such as direct dyes, acidic dyes, edible dyes, basic dyes, reactive dyes, disperse dyes, dye dyes, soluble dye dyes, reactive disperse dyes, etc. as dyes of each color such as yellow, magenta, and cyan. Etc. can be used.

Further, the ink may contain a water-soluble organic solvent, polyhydric alcohols, betaines, saccharides, ureas, a surfactant and the like in addition to the coloring material in order to obtain predetermined ink characteristics. The predetermined ink characteristics include wettability and permeability of ink to the recording medium 12, curl to the recording medium 12, cockling suitability, strike-through suitability, clogging suitability in ink ejection, suitability of viscosity characteristics depending on the ink temperature, and the like. Is.
Specifically, for example, 1,2-alkanediol, glycol ether, pyrrolidone derivative and the like are used as water-soluble organic solvents, and glycerin, 1,2,6-hexanetriol, diethylene glycol and triethylene glycol are used as polyhydric alcohols. , Tetraethylene glycol, dipropylene glycol and the like can be used. As the surfactant, known fluorine-based surfactants, acetylene glycol-based surfactants, silicon-based surfactants and the like can be used.

When the pigment is contained in the ink, a dispersant for dispersing the pigment may be added as another component. Further, in order to further improve the characteristics of the ink, a pH adjuster, a complexing agent, a defoaming agent, an antioxidant, an ultraviolet absorber, an antiseptic / antifungal agent and the like may be added to the ink.

<Transformation of recording medium>
When the recording medium 12 contains fibers that absorb water such as cellulose, the recording medium 12 may be deformed by the water contained in the ink. In particular, this may be noticeable in the case of recording using a water-based ink containing 50% by mass or more of water.
Hereinafter, among the deformations of the recording medium 12, the deformation in which the recording medium 12 curls in a convex or concave shape will be described.

5 to 8 are schematic views showing an example of the curled state of the recording medium 12.
As shown in FIG. 5, when ink is applied to the main surface 12p of the recording medium 12, water contained in the ink permeates the main surface 12p and the main surface 12p side swells (fibers constituting the recording medium 12 are elongated). As a result, the recording medium 12 may be curled so as to have a convex shape on the main surface 12p side. The direction of curling in a convex shape with respect to the transport direction Y of the recording medium 12 (direction of the arc) differs depending on the configuration specifications of the recording medium 12 (printing paper) and the direction in which the recording medium 12 is set in the printer 100. It may curl as shown in 6.
In such curls, the stretched fibers may shrink as the main surface 12p dries, and the degree thereof may decrease. Further, as shown in FIGS. 7 and 8, the fibers may be further contracted by drying and may be curled (secondary curl).

Further, the degree of such curl (deformation amount) varies depending on various factors. Various factors include, for example, the material and thickness of the recording medium 12, when the recording medium 12 is formed of a plurality of layers, the configuration specifications of the layers, the usage environment (temperature and humidity) of the printer 100, the recording time, and the like. Elapsed time from recording (drying time), water content of the recording medium 12 at the start of recording or drying, ink specifications (water content, concentration, temperature), ink application amount, shape and size of ink application area , And so on. The amount of curl and the amount of secondary curl differ depending on these specifications and degrees.

Further, due to such deformation (curl) of the recording medium 12, the recording device 1 may not operate normally. Specifically, for example, jam of the recording medium 12 occurs in the transport path after recording, or it becomes impossible to align and stack the recording media 12 at the place where the recording media 12 are laminated such as the tray 85 and the stacker 37. As a result, the recording media 12 may be folded over, or the staple processing may not be possible in a predetermined unit.

On the other hand, for example, there is an apparatus provided with means for suppressing deformation (curl) of the recording medium 12, such as the post-processing apparatus described in Patent Document 1 described above. However, when the degree of deformation (curl) of the recording medium 12 is different, the suppressing means may not function sufficiently. For example, in the case of the aftertreatment device of Patent Document 1, the pressing force due to the second air flow sprayed from above the paper mounting surface toward the paper mounting surface is insufficient for the stress of the curled paper. In that case, it is not possible to sufficiently suppress the curl.

On the other hand, the recording post-processing device (reversing device 210, stapler device 220) of the present embodiment includes a post-processing unit (reversing transport path 18, stapler processing unit 36) that performs post-processing of the recorded recording medium 12. Suppresses deformation of the recording medium 12 in the transfer path (reversal transfer path 18, stapler transfer path 19) on which the recording medium 12 is conveyed, or in the mounting portion (tray 85, stacker 37) on which the recording medium 12 is placed. The deformation suppressing means is provided, and the deformation suppressing means is controlled based on a predetermined parameter related to the recording process for the recording medium 12. That is, the suppression strength of the deformation suppressing means for suppressing the deformation of the recording medium 12 is controlled based on a predetermined parameter related to the recording process for the recording medium 12.
This will be described in detail below.

<Deformation suppressing means>
The deformation suppressing means for suppressing curl can be configured in various forms in the transport path (reversal transport path 18, stapler transport path 19) and the mounting portion (tray 85, stacker 37).
9 to 18 are schematic views showing an example of deformation suppressing means.

<Means for suppressing deformation due to wind pressure>
FIG. 9 shows an example of the deformation suppressing means 300 that suppresses the deformation of the recording medium 12 placed on the tray 85 (see FIG. 4) by wind pressure. That is, the deformation suppressing means 300 is a deformation suppressing means using wind pressure as a pressing means against the stress caused by the deformation of the recording medium 12.
The deformation suppressing means 300 includes a plurality of (three in the example shown in FIG. 9) blowing units 90. Each blowing unit 90 is provided so as to blow air from a position facing the mounting surface 85a of the tray 85 on which the recording medium 12 is mounted toward the mounting surface 85a.

The lateral position (in-plane position parallel to the mounting surface 85a) where the blower portion 90 is installed is provided at an appropriate position for pressing the recording medium 12 and suppressing curl. That is, when the size, curl direction, and direction of the recording medium 12 are constant, the position (region) where the recording medium 12 is curled and separated from the mounting surface 85a is known in advance, so that it is appropriate to face that position. It is provided at a position (a position where the recording medium 12 separated from the mounting surface 85a can be effectively pressed against the mounting surface 85a by wind pressure). When the size of the recording medium 12 handled by the recording device 1 and the curling direction and direction are not constant, it is preferable to variably configure the position in the lateral direction (in-plane direction) in which the blower unit 90 is installed.
For the blower unit 90, for example, a so-called blower fan that blows wind by a rotary blade that is driven to rotate can be used.

For example, the recording medium 12 curled by the swelling of the main surface 12p to which the ink is applied is inverted by the inversion device 210, and as shown in FIG. 9, the main surface 12p to which the ink is applied is placed below (placed). It is placed in a concave state on the mounting surface 85a of the tray 85 (in the direction toward the surface 85a). The curl of the recording medium 12 can be suppressed by the blower 90 pressing the regions on both sides of the recording medium 12 away from the mounting surface 85a by the wind pressure.
Further, for example, as shown in FIG. 10, when the curl direction of the recording medium 12 is opposite to the above, the blower portion 90 curls the central region of the recording medium 12 away from the mounting surface 85a. By pressing with wind pressure, curling of the recording medium 12 can be suppressed.

The suppression strength of the deformation suppressing means in this example is the wind pressure blown by the blower unit 90, for example, the rotation speed of the rotary blade. The wind pressure blown by the blower unit 90 is controlled by the stapler control unit 72 linked with the printer control unit 70. The control of the suppression strength will be described later.

The deformation suppressing means 300 may be provided in the stacker 37 (see FIG. 4). That is, the air blowing unit 90 may be provided so as to blow air from a position facing the mounting surface 37a of the stacker 37 on which the recording medium 12 is placed toward the mounting surface 37a. In this case, it is configured as a deformation suppressing means for suppressing curling when the stapling process is completed and the bundled recording media 12 are curled and laminated.

<Means for suppressing deformation by pressing>
11 and 12 show an example of the deformation suppressing means 301 that suppresses the deformation of the recording medium 12 placed on the tray 85 by contacting and pressing the recording medium 12. That is, the deformation suppressing means 301 is a deformation suppressing means using a pressing means that opposes the stress caused by the deformation of the recording medium 12.
FIG. 12 is a schematic view illustrating the deformation suppressing means 301 shown in FIG. 11 from the side surface. Note that FIG. 11 shows one recording medium 12, and FIG. 12 shows a plurality of recording media 12 mounted so as to be stacked.

The deformation suppressing means 301 includes a plurality of pressing members 91 (two in the example shown in FIG. 11) and a guide shaft 92 that supports the pressing members 91.
The pressing member 91 is a flexible thin plate-shaped resin member, one end region 91a of which is supported by the guide shaft 92, and the other end region 91b abuts on the recording medium 12 as a free end. It is configured in.
The guide shaft 92 is attached to the staple device 220 so as to extend in parallel with the mounting surface 85a of the tray 85 on which the recording medium 12 is mounted. By rotating the guide shaft 92 around the axis as shown by the arrow K shown in FIG. 12, the pressure F at which the pressing member 91 presses the recording medium 12 can be adjusted.

The lateral position (the position where the guide shaft 92 is provided and the position along the guide shaft 92) where the pressing member 91 is installed is provided at an appropriate position where the recording medium 12 is pressed and curl is suppressed. That is, when the size, curl direction, and direction of the recording medium 12 are constant, the position (region) where the recording medium 12 is curled and separated from the mounting surface 85a is known in advance, so that it is appropriate to face that position. It is provided at a position (a position where the recording medium 12 separated from the mounting surface 85a can be effectively pressed against the mounting surface 85a). When the size of the recording medium 12 handled by the recording device 1 and the curling direction or direction are not constant, it is preferable to variably configure the lateral direction (in-plane direction) in which the pressing member 91 is installed.

For example, the recording medium 12 curled by the swelling of the main surface 12p to which the ink is applied is inverted by the inversion device 210, and as shown in FIG. 11, the main surface 12p to which the ink is applied is placed below (placed). It is placed in a concave state on the mounting surface 85a of the tray 85 (in the direction toward the surface 85a). The pressing member 91 presses the regions on both sides of the recording medium 12 away from the mounting surface 85a by curling, so that the curl of the recording medium 12 can be suppressed.

The restraining strength of the deformation suppressing means in this example is the pressure F pressed by the pressing member 91, for example, the rotation angle of the guide shaft 92. The pressure F pressed by the pressing member 91 is controlled by the stapler control unit 72 linked with the printer control unit 70. The control of the suppression strength will be described later.

The deformation suppressing means 301 may be provided in the stacker 37. That is, the guide shaft 92 is attached to the stacker 37 so as to extend parallel to the mounting surface 37a of the stacker 37 on which the recording medium 12 is mounted, and the pressing member 91 is pressed in the direction toward the mounting surface 37a. It may be provided as follows. In this case, it is configured as a deformation suppressing means for suppressing curling when the stapling process is completed and the bundled recording media 12 are curled and laminated.

<Means for suppressing deformation due to gravity>
13 to 15 show an example of the deformation suppressing means 302 provided with protruding ribs that abut the curled recording medium 12 so as to be deformed and corrected in the direction opposite to the curled direction due to its own weight (gravity). .. That is, the deformation suppressing means 302 is a deformation suppressing means using gravity as a pressing means against the stress caused by the deformation of the recording medium 12.
Note that FIG. 14 is a schematic diagram illustrating the deformation suppressing means 302 shown in FIG. 13 from the side surface.

The deformation suppressing means 302 is provided on the stacker 37 and includes one or a plurality of (two in the example shown in FIG. 15) protruding ribs 93 protruding from the mounting surface 37a of the stacker 37.
The projecting rib 93 is a block body extending in a direction intersecting the direction of the curl arc of the recording medium 12, and the upper surface abutting with the recording medium 12 is placed by the projecting mechanism (not shown) provided in the deformation suppressing means 302. It can be projected from the surface 37a in the normal direction.
The lateral position where the protruding rib 93 is installed is provided at an appropriate position where the curl of the recording medium 12 is suppressed by its own weight (gravity G). That is, when the size of the recording medium 12 and the curling direction or direction are constant, the position (region) where the recording medium 12 curls and separates from the mounting surface 37a is known in advance, so that position (region) is gravity. It is provided at an appropriate position as a fulcrum pushed by G. When the size of the recording medium 12 and the curling direction or direction are not constant, it is preferable to configure the position of the projecting rib 93 in the lateral direction (in-plane direction) to be variable.

For example, the recording medium 12 curled by the swelling of the main surface 12p to which the ink is applied is inverted by the inversion device 210, and as shown by the broken line in FIG. 13, the main surface 12p to which the ink is applied is below ( It is placed in a concave state on the protruding rib 93 protruding from the mounting surface 37a of the stacker 37 (in the direction toward the mounting surface 37a). The curl of the recording medium 12 is corrected by receiving gravity G on both sides of the recording medium 12 away from the mounting surface 37a by curling with the protruding rib 93 as a fulcrum. Alternatively, gravity G acts in the direction in which the curl is corrected.
Further, for example, as shown in FIG. 15, when the curl direction of the recording medium 12 is opposite to the above, the central region of the recording medium 12 away from the mounting surface 37a is subjected to gravity G by curling. By supporting the regions on both sides of the recording medium 12 close to the mounting surface 37a as fulcrums, the curl of the recording medium 12 can be corrected. Alternatively, gravity G acts in the direction in which the curl is corrected.

The restraining strength of the deformation suppressing means in this example is the amount at which the upper surface of the protruding rib 93 (the surface in contact with the recording medium 12) protrudes from the mounting surface 37a in the normal direction, and is the control amount of the protruding mechanism. The protrusion mechanism is controlled by a stapler control unit 72 that is linked to the printer control unit 70. The control of the suppression strength will be described later.

<Means for suppressing deformation by humidification (adding water)>
FIG. 16 shows an example of the deformation suppressing means 303 that suppresses curling of the recording medium 12 by humidification (adding water). The deformation suppressing means 303 is a deformation suppressing means using a humidifying (water applying) means as a means for relaxing the stress that causes the deformation of the recording medium 12.
As described above, the recording medium 12 is curled by the action of water contained in the ink applied to the main surface 12p. Therefore, curling of the recording medium 12 can be suppressed by applying the same amount of water as the water permeating the main surface 12p to the back surface of the main surface 12p. That is, by applying water that causes swelling in the same amount as the swelling of the main surface 12p to the back surface, the front and back surfaces are balanced and curl is suppressed.

The deformation suppressing means 303 is provided with a humidifying portion 94 capable of applying water to the back surface of the recording medium 12.
Specifically, the humidifying unit 94 can be configured with, for example, a line head that discharges water instead of ink. Therefore, if the position where the deformation suppressing means 303 is provided is a position where the recording medium 12 can pass through and a humidifying unit 94 for discharging water can be installed on the back surface of the recording medium 12, the recorded recording medium 12 is conveyed. It can be installed at any of the paths (reversal transport path 18, stapler transport path 19) and the mounting section (tray 85, stacker 37) on which the recording medium 12 is mounted.

The suppressing strength of the deformation suppressing means in this example is the amount of water given to the back surface of the recording medium 12 by the humidifying unit 94. The amount of water provided by the humidifying unit 94 is controlled by either the reversing control unit 71 or the stapler control unit 72 linked with the printer control unit 70, depending on the position where the humidifying unit 94 is installed. The control of the suppression strength will be described later.

<Means for suppressing deformation by straightening deformation>
FIG. 17 shows an example of deformation suppressing means 304 that suppresses curl of the recording medium 12 by correcting and deforming the recording medium 12. That is, the deformation suppressing means 304 is a deformation suppressing means provided with a correcting means for correcting the deformation of the recording medium 12.
For example, when the curl as shown in FIG. 6 occurs, that is, when the arc formed by the curl points in the transport direction Y, the recording medium 12 is deformed so as to extend in the transport direction Y. As a result, curl may be suppressed. Explaining with an extreme example, when the recording medium 12 is bent so that a crease is formed in the transport direction Y (that is, the direction of the arc formed by the curl) with respect to the curl as shown in FIG. 6, the curl is suppressed. It is understood by that.

The deformation suppressing means 304 is an arc formed by curls on the recording medium 12 at any position of the transport path (reversal transport path 18, stapler transport path 19) on which the recorded recording medium 12 is transported. It is provided with a plurality of rollers 95 (7 in the example shown in FIG. 17) that form a deformation extending in the direction of. The roller 95 is driven by a transfer motor (not shown).
As shown in FIG. 17, the rollers 95 are arranged at substantially equal intervals in a direction intersecting the transport direction Y, and the adjacent rollers 95 are arranged in the vertical direction (thickness of the recording medium 12) so that the recording medium 12 is sandwiched between the rollers 95. It shifts in the direction) and is arranged alternately. The recording medium 12 is sandwiched between the roller 95a shifted upward and the roller 95b shifted downward so as to abut against the height at which the roller 95a shifted upward abuts on the recording medium 12. Further, by configuring the roller 95b shifted downward so as to have a high height in contact with the recording medium 12, the recording medium 12 can be corrected and deformed so as to have a wavefront. By this correction deformation, curl as shown in FIG. 6 can be suppressed.

The restraining strength of the deformation suppressing means in this example is an amount that shifts the roller 95 in the vertical direction (thickness direction of the recording medium 12), and is the lower end of the roller 95a shifted in the upward direction and the roller 95b shifted in the downward direction. The amount of gap with the upper end of. The larger the gap amount, the larger the wavefront formed by the straightening deformation, and the more the curl suppressing effect is enhanced.

<Means for suppressing deformation due to drying>
FIG. 18 shows an example of the deformation suppressing means 305 that suppresses curling of the recording medium 12 by drying. That is, the deformation suppressing means 305 is a deformation suppressing means provided with a drying means as a means for relaxing the stress that causes the deformation of the recording medium 12.

The deformation suppressing means 305 includes a heater 96 capable of drying the ink (water) applied to the recording medium 12.
The heater 96 is provided in the first inversion path 48 and the second inversion path 49, and is dried by heating the recording medium 12 conveyed to the first inversion path 48 and the second inversion path 49, and is the main of the recording medium 12. Curling is suppressed by shrinking the main surface 12p swollen by the ink (water) applied to the surface 12p. The heater 96 can be configured by an infrared lamp, a heating wire, or the like.

The transport path provided with the heater 96 may be configured to be linearly flat as in the first reversal path 48 shown in FIG. 18, or may be curved as in the second reversal path 49 shown in FIG. May be. It is desirable that the bending direction is opposite to the bending direction in which the recording medium 12 is curled.
Further, the transport path accompanied by the heater 96 is configured with a plurality of transport paths having a curve corresponding to the curl direction of various recording media 12 so as to suppress the curl in the opposite direction. , The configuration may be such that control is performed to transport the recording medium 12 to the corresponding transport path.

The suppression strength of the deformation suppressing means in this example is the output of the heater 96 and the drying time in the transport path accompanied by the heater 96. The output and drying time of the heater 96 are controlled by the inversion control unit 71 linked with the printer control unit 70. The control of the suppression strength will be described later.
Although it has been explained that the heater 96 is provided in the deformation suppressing means 305, it also has a function as an intermediate processing unit that performs a drying process as an intermediate process of the recorded recording medium 12.

In the above description, the deformation of the recording medium 12 has been described using the example of a simple curl, but more complicated deformation may occur. For example, depending on the specifications of the image to be recorded on the recording medium 12, complicated deformation may occur. This is because the amount of ink applied to the main surface 12p of the recording medium 12 (that is, the amount of water that permeates) differs in the plane depending on the specifications of the image.
Therefore, as the deformation suppressing means, it is preferable to have a configuration capable of suppressing the deformation when there is an in-plane variation in the deformation. For example, as shown in FIG. 19, when an image is formed (inked) concentrated on a part of a region of the recording medium 12 and curl occurs only in that region, this region is targeted. It is preferable that the configuration is such that the deformation of the ink can be suppressed. This is to prevent the undeformed region from being deformed on the contrary depending on the deformation suppressing means when the deformation is similarly suppressed.

FIG. 20 is an example of the deformation suppressing means 306 having a configuration capable of suppressing the deformation of the partially deformed region of the recording medium 12.
The deformation suppressing means 306 shown in FIG. 20 is a modification of the deformation suppressing means 302 provided with the protruding ribs described with reference to FIGS. 13 to 15, and shows the arrangement of the protruding ribs 93a provided on the stacker 37. It shows a plan view.
As shown in FIG. 20, the deformation suppressing means 306 includes a plurality of (56 in the example shown in FIG. 20) protruding ribs 93a arranged in a matrix on the mounting surface 37a of the stacker 37.
The protruding ribs 93 included in the deformation suppressing means 302 are block bodies extending long in the direction intersecting the direction of the curl arc of the recording medium 12, whereas the protruding ribs 93a are arranged in a matrix. By projecting the protruding rib 93a at a position corresponding to the deformation formed in the specific region of the recording medium 12 (position where the deformation can be corrected), the deformation of the region can be suppressed.

As described above, not only the protruding ribs 93a but also the action portions for suppressing the deformation of the recording medium 12 are arranged in a matrix and faced with the recording medium 12, so that they are similarly formed in a specific region of the recording medium 12. It is possible to construct a deformation suppressing means capable of suppressing deformation. For example, as the acting unit arranged in a matrix, the ventilation unit 90 of the deformation suppressing means 300 described with reference to FIG. 9 may be arranged in a matrix.
In the deformation suppressing means 303 described with reference to FIG. 16, when the humidifying portion 94 is composed of a line head for discharging water, the position where water is applied is controlled in the same manner as when an image is formed on the recording medium 12. Therefore, for example, by adding water to the back surface of the recording medium 12 so as to form a mirror image in accordance with the image to be recorded on the recording medium 12, the front and back surfaces are in a balanced state, and deformation such as curl can be suppressed. That is, the deformation suppressing means 303 is configured as a deformation suppressing means capable of suppressing the deformation formed in a specific region of the recording medium 12.

<Control of deformation suppressing means>
Next, the control of the deformation suppressing means that characterizes the present embodiment will be described.
As described above, it is preferable to suppress the deformation of the recording medium 12 by balancing the degree of deformation and the action and effect (suppression strength) of the deformation suppressing means. For example, if the action of the deformation suppressing means is insufficient with respect to the stress of the curled recording medium 12, the curl cannot be sufficiently suppressed and the initial problem cannot be solved. On the contrary, driving the deformation suppressing means uniformly with sufficient suppressing strength to cope with all the expected deformations may be a waste of energy, or conversely, the recording medium 12 may be deformed. Because it does.
In the present embodiment, the suppression strength and the suppression specifications of the deformation suppressing means are controlled so as to correspond to the degree of deformation and the deformation state of the recording medium 12. Specifically, the suppression strength and the suppression specifications of the deformation suppressing means are controlled based on parameters (predetermined parameters related to the recording process for the recording medium 12) that determine the degree of deformation of the recording medium 12. The suppression specification is a specification of the suppression strength including a portion (position in the plane of the recording medium 12) to which the suppression strength is applied, and locally means the suppression strength.

<Predetermined parameters related to recording processing>
Predetermined parameters related to the recording process that determines the degree of deformation of the recording medium 12 include physical property information of the recording medium 12, ink composition data, recording environment information of the environment for recording on the recording medium 12, and recording on the recording medium 12. The recording data for performing the recording, the elapsed time since recording on the recording medium 12, the transport path (printer transport path 17, reverse transport path 18, stapler transport path 19) or the mounting unit (tray 85, stacker 37). Contains device environment information for the included environment.
It should be noted that it is not always necessary to include all the above parameters in the predetermined parameters related to the recording process. For example, when the recording medium 12 or ink to be used is limited to one type in advance, or when the environment for recording on the recording medium 12 is limited to a specific environment, the degree of deformation of the recording medium 12 is affected. It is not necessary to include the parameters that are not expected to be given as the parameters for controlling the suppression strength and the suppression specifications of the deformation suppressing means.

The physical property information of the recording medium 12 is the physical property information related to the deformation of the recording medium 12, and is prepared as data evaluated in advance.
The data to be evaluated and prepared in advance (physical property information related to the deformation of the recording medium 12) is, for example, in a predetermined environment (under a predetermined temperature and humidity) and at a predetermined density with respect to a predetermined test piece (recording medium 12). It can be prepared as the amount of deformation of the test piece at a predetermined elapsed time or the deformation stress obtained when the deformed portion is pressed by applying water.
The physical property information is the product number information of the recording medium 12 associated with the pre-evaluated physical property information and the material name constituting the recording medium 12 associated with the pre-evaluated physical property information. Is also good.

The ink composition data is information on the content of water and volatile components contained in the ink. In particular, in the case of a water-based ink containing 50% by mass or more of water, the degree of deformation of the recording medium 12 varies greatly depending on the water content. Further, when an ink containing 70% by mass or more of water is applied, the frequency of secondary curling increases when the recording medium 12 dries.

The recording environment information of the environment for recording on the recording medium 12 is, for example, the temperature and humidity of the place where the printer 100 is installed.
In different temperature and humidity environments, the permeation speed and drying speed of the ink (water) applied to the recording medium 12 may change, and as a result, the deformation characteristics (degree and state of deformation and its change) of the recording medium 12 may change. It will change. Further, since the water content (degree of drying) of the recording medium 12 placed in different temperature and humidity environments changes, the permeation rate and drying rate of the ink (water) applied to the recording medium 12 may also change. be.

As described above, the recording data for recording on the recording medium 12 is data for causing the printer 100 to execute recording, which is generated based on the image data (text data or image data) to be recorded on the recording medium 12. Is. That is, since the amount of ink (water) applied to the recording medium 12, the density (duty) to be applied, and the area to be applied change depending on the recording data, the degree of deformation and the state of deformation of the recording medium 12 change. It depends on the recorded data. For example, in the case of a general recording paper in which the recording medium 12 is mainly composed of cellulose, curl becomes noticeable when the difference in duty between the front and back surfaces of the recording medium 12 is 30% or more. Further, the recorded data also includes control information as to whether the recording on the recording medium 12 is double-sided recording or single-sided recording. In single-sided recording, the difference in duty between the front and back of the recording medium 12 is remarkable, so that curl also appears remarkably.
Here, "duty" is a value calculated by the following formula.
duty [%] = number of actual recorded dots / (vertical resolution x horizontal resolution) x 100
In the formula, "number of actual recording dots" is the number of actual recording dots per unit area formed by ink droplets, and "vertical resolution" and "horizontal resolution" are resolutions per unit length, respectively.

The elapsed time from recording on the recording medium 12 is, in other words, the natural drying time of the recorded recording medium 12.
As the recorded recording medium 12 moves along the transport path and is dried, the degree and state of deformation are different. Further, for example, when the recording device 1 is stopped due to an error such as a jam of the recording medium 12 in the transport path of the recording device 1, if the recording medium 12 is naturally dried, the degree of deformation and the state change. Come on.

The device environment information of the environment including the transfer path (printer transfer path 17, reverse transfer path 18, stapler transfer path 19) or mounting unit (tray 85, stacker 37) is, for example, the recording post-processing device 200 (reversal device). 210, the temperature and humidity of the place where the stapler device 220) is installed.
In different temperature and humidity environments in the transport path and mounting portion of the recording medium 12, the permeation speed and drying speed of the ink (water) applied to the recording medium 12 may change, and as a result, the deformation characteristics of the recording medium 12 Will change.

<Control of suppression strength>
The suppression strength of each of the above-mentioned deformation suppressing means is controlled based on the above-mentioned predetermined parameters. Specifically, for example, it is controlled by using a condition table (or a function) from which the suppression strength of each deformation suppressing means is derived corresponding to the specific value of the predetermined parameter described above.
After sufficient evaluation in advance, the condition table (or function) is suppressed by, for example, the type of recording medium 12 and the type of deformation suppressing means, for example, the density (duty) of water to be applied and the temperature and humidity. Prepare as a condition table (or function) from which the intensity is derived.
The prepared condition table (or function) is stored in a storage unit included in the printer control unit 70.

Derivation of the suppression strength using the condition table (or function) is performed by the printer control unit 70. In the condition table (or function), for example, when a standard known recording paper is used as the recording medium 12, the recording paper name (for example, the product number) is specified in the printer control unit 70, so that the recording device 1 can be used. The condition table (or function) corresponding to the deformation suppressing means provided in the printer control unit 70 is extracted from a plurality of condition tables stored in the storage unit included in the printer control unit 70. The printer control unit 70 uses the condition table (or function) to derive the suppression strength according to the recorded data to be recorded and the temperature and humidity at that time. The temperature / humidity may be obtained from a thermo-hygrometer provided in each part of the recording device 1, or may be input by the operator of the recording device 1 to the printer control unit 70.

The printer control unit 70 controls the corresponding deformation suppressing means in cooperation with the control unit (reversal control unit 71, stapler control unit 72) provided with the deformation suppressing means based on the derived suppression strength.

As described above, according to the recording post-processing apparatus and the recording apparatus according to the present embodiment, the following effects can be obtained.
The degree of deformation (deformation amount and stress due to deformation) of the recorded recording medium 12 is not constant, and varies depending on various parameters related to the recording process for the recording medium 12. According to the present embodiment, since the deformation suppressing means is controlled based on a predetermined parameter related to the recording process for the recording medium 12, it is possible to more appropriately suppress the deformation of the recording medium 12.

Further, in the recording using the water-based ink, the water-based ink having a high affinity with the recording medium 12 permeates the recording medium 12, so that the recording medium 12 is used after recording or drying as compared with the recording using the oil-based ink. The degree of deformation is large. According to the present embodiment, the post-recording process can be performed on the recording medium 12 recorded with the water-based ink in a state where the deformation of the recording medium 12 is more effectively suppressed.

Further, when recording is performed on a recording medium 12 containing fibers that absorb water such as cellulose using a water-based ink containing 50% by mass or more of water, it is possible to more appropriately suppress the deformation of the recording medium 12. It becomes.

Further, according to the present embodiment, in order to control the suppression strength of the deformation suppressing means for suppressing the deformation of the recording medium 12 based on a predetermined parameter including the physical property information of the recording medium 12, the recording medium 12 is more appropriately used. It is possible to suppress deformation. For example, for a recording medium 12 that curls with a stronger stress, deformation is suppressed with a stronger necessary and sufficient suppressing strength.

Further, according to the present embodiment, in order to control the suppression strength of the deformation suppressing means for suppressing the deformation of the recording medium 12, based on a predetermined parameter including the recording environment information of the environment for recording on the recording medium 12, it is further controlled. It is possible to appropriately suppress the deformation of the recording medium 12. For example, when the water content of the recording medium 12 is high, such as when recording is performed by the printer 100 installed in a higher humidity environment, compared with the case of recording on a drier recording medium 12. Since the degree of deformation is low, the deformation can be suppressed with a weaker suppressing strength that is necessary and sufficient.

Further, according to the present embodiment, it is more appropriate to control the suppression strength of the deformation suppressing means for suppressing the deformation of the recording medium 12 based on a predetermined parameter including the recording data for recording on the recording medium 12. It is possible to suppress the deformation of the recording medium 12. For example, when the difference in duty between the front and back of the recording medium 12 is remarkable, such as single-sided recording, the degree of curl is high, so that the deformation is suppressed with a stronger necessary and sufficient suppressing strength.

Further, according to the present embodiment, in order to control the suppression strength of the deformation suppressing means for suppressing the deformation of the recording medium 12, based on a predetermined parameter including the elapsed time from recording on the recording medium 12, the more It is possible to appropriately suppress the deformation of the recording medium 12. For example, when it is expected that the secondary curl will appear remarkably when the elapsed time is exceeded, the deformation is suppressed with a necessary and sufficient suppressing strength in the direction of suppressing the secondary curl according to the elapsed time.

Further, according to the present embodiment, in order to control the suppression strength of the deformation suppressing means for suppressing the deformation of the recording medium 12 based on a predetermined parameter including the device environment information of the environment including the transport path or the mounting portion. , It is possible to more appropriately suppress the deformation of the recording medium 12. For example, when the temperature and humidity of the environment including the transport path are high and the humidity is low, the degree of drying of the recording medium 12 is high during the transport, and the degree of curl is stronger when it is assumed that the degree of curl is high. Deformation is suppressed with necessary and sufficient suppression strength.

Further, the recording post-processing apparatus 200 includes, as a post-processing unit, an inverting transfer path 18 as an intermediate processing unit that performs inverting processing as intermediate processing, and a staple processing unit 36 that performs staple processing as finishing processing. .. Therefore, the inversion process and the staple process can be performed in the same device. Further, according to the present embodiment, since the deformation of the recording medium 12 is suppressed more appropriately, the occurrence of problems such as jams is suppressed in the apparatus that performs these processes.

Further, the deformation of the recording medium 12 is suppressed by any of the deformation suppressing means of the pressing means for countering the stress due to the deformation, the correcting means for correcting the deformation, and the stress relaxing means for causing the deformation, and the respective suppressing strengths are recorded. Since the control is performed based on a predetermined parameter related to the recording process for the medium 12, it is possible to more appropriately suppress the deformation of the recording medium 12.

Further, according to the recording device 1, it is possible to perform post-recording processing in a state in which deformation of the recording medium 12 after recording is more appropriately suppressed.

1 ... Recording device, 12 ... Recording medium, 17 ... Printer transport path, 18 ... Reverse transport path, 18a ... Pre-reversal path, 18b ... Reverse path, 18c ... Post-reversal path, 19 ... Stapler transport path, 21 ... Cassette, 22 ... Feeding unit, 23 ... Printer transport unit, 24 ... Recording unit, 26 ... Pickup roller, 27 ... Separation roller pair, 30 ... Transport roller pair, 31 ... Transport belt, 32 ... Drive pulley, 33 ... Driven pulley, 35 ... Stapler transport section, 36 ... Staple processing section, 37 ... Stacker, 37a ... Mounting surface, 41 ... First reversing section, 42 ... Second reversing section, 44 ... First branch path, 45 ... Second branch path, 46 ... 1st confluence path, 47 ... 2nd confluence path, 48 ... 1st inversion path, 49 ... second inversion path, 52 ... inversion transfer unit, 56 ... transfer roller pair, 58 ... sensor, 59 ... guide flap, 70 ... printer Control unit, 71 ... Inversion control unit, 72 ... Stapler control unit, 81, 82 ... Conveyor roller pair, 83 ... Guide flap, 84 ... Sensor, 85 ... Tray, 85a ... Mounting surface, 86 ... Stapler, 90 ... Blower unit , 91 ... pressing member, 92 ... guide shaft, 93 ... protruding rib, 94 ... humidifying part, 95 ... roller, 96 ... heater, 100 ... printer, 200 ... recording post-processing device, 210 ... reversing device, 220 ... stapler device, 300-306 ... Deformation suppressing means.

Claims (9)

A post-processing unit that performs post-processing of the recording medium recorded with water-based ink,
A mounting unit on which the recording medium to be post-processed by the post-processing unit is placed, and a mounting unit.
Deformation suppressing means for suppressing deformation of the recording medium in the preambled portion due to a predetermined parameter related to the recording process for the recording medium, and
A control unit that controls the deformation suppressing means based on the predetermined parameter is provided.
The control unit receives the predetermined parameter from the printer control unit that controls recording, and changes the suppression strength of the deformation suppressing means with respect to the recording medium based on the predetermined parameter.
The post-processing apparatus, wherein the predetermined parameter includes information based on conditions when recording is performed on the recording medium. The post-treatment apparatus according to claim 1, wherein the water-based ink contains 50% by mass or more of water and contains a water-soluble organic solvent, a surfactant, and a pigment. The post-processing apparatus according to claim 1 or 2, wherein the predetermined parameter includes information based on the physical property information of the recording medium. The post-processing device according to any one of claims 1 to 3, wherein the predetermined parameter includes information based on the recording environment information of the environment for recording on the recording medium. The post-processing device according to any one of claims 1 to 4, wherein the predetermined parameter includes information based on recorded data for recording on the recording medium. The post-processing device according to any one of claims 1 to 5, wherein the predetermined parameter includes information based on the elapsed time from recording on the recording medium. 13. The post-processing device described. The post-processing unit includes an intermediate processing unit that performs intermediate processing and a finishing unit that performs finishing processing.
The intermediate processing unit performs an inversion process or a drying process of the recording medium as the intermediate process.
17. The post-processing device according to any one of the above. A recording head that records by applying water-based ink to the recording medium,
A printer control unit that controls recording on the recording medium by the recording head, and
A post-processing unit that performs post-processing of the recorded recording medium,
A mounting unit on which the recording medium to be post-processed by the post-processing unit is placed, and a mounting unit.
Deformation suppressing means for suppressing deformation of the recording medium in the preambled portion due to a predetermined parameter related to the recording process for the recording medium, and
A control unit that controls the deformation suppressing means based on the predetermined parameter is provided.
The control unit receives the predetermined parameter from the printer control unit, and changes the suppression strength of the deformation suppressing means with respect to the recording medium based on the predetermined parameter.
A recording apparatus, wherein the predetermined parameter includes information based on conditions when recording is performed on the recording medium.

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