JP2014172350A - Printing device and method for adjusting arrangement position thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printing device to which precise positioning can be performed by optical positioning.SOLUTION: Positioning is performed so that a laser beam LB from a laser beam irradiation unit 33 attached to a sheet feeding part 3 is emitted to a laser beam detection unit 35 attached to an entrance unit 9. The laser beam LB has high coherence, so that it goes straight without diffusing. Accordingly, precise positioning can be performed by optical positioning in which the positioning is performed so that the laser beam LB can be emitted to the laser beam detection unit 35.

Description

  The present invention relates to a printing apparatus that prints an image or the like on a printing medium and a method for adjusting the arrangement position thereof.

  Conventionally, as this type of apparatus, there is an apparatus including a paper feeding unit, a printing unit, a drying unit, and a paper discharge unit (see, for example, Patent Document 1). The paper supply unit supplies, for example, roll-shaped continuous paper. The printing unit prints an image or the like on the supplied continuous paper. The drying unit dries the printed continuous paper. The paper discharge unit winds up the printed and dried continuous paper in a roll shape.

  As described above, when installing a printing apparatus in which the printing apparatus is composed of a plurality of units, each unit is arranged so that the continuous paper conveyance path has a predetermined shape (straight or L-shaped). Be placed. The arrangement position is adjusted according to the result of measurement by visual observation or a ruler. Then, printing is performed on continuous paper, and the arrangement position of each unit is adjusted so that meandering and skewing do not occur.

Japanese Patent Laid-Open No. 7-47655 (FIG. 1)

However, the conventional example having such a configuration has the following problems.
That is, the conventional apparatus adjusts the arrangement position by visual observation or a ruler, and performs readjustment according to the printing result. Therefore, there is a problem that it is troublesome and precise positioning is difficult.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a printing apparatus capable of precisely positioning by optical positioning and a method for adjusting the arrangement position thereof.

In order to achieve such an object, the present invention has the following configuration.
That is, the invention according to claim 1 is a printing apparatus constituted by a plurality of units constituting a conveyance path for conveying a print medium, and is provided in one unit and the support member constituting one unit. A laser beam irradiating means for irradiating a laser beam and a laser beam provided in the other unit and attached to a support member constituting the other unit and receiving the laser beam from the laser beam irradiating means Light receiving means, and positioning is performed so that the laser light from the laser light irradiation means is irradiated onto the laser light receiving means.

  [Operation / Effect] According to the first aspect of the present invention, the laser beam irradiated from the laser beam irradiation means attached to one unit in the optical path parallel to the unit can be attached to the other unit. Positioning is performed so that the laser light receiving means is irradiated. Laser light travels straight without diffusing because of its high coherence. Therefore, precise positioning can be performed by optical positioning that performs positioning so that the laser beam can be irradiated.

  Further, in the present invention, the support member of the one unit includes a first irradiation side diaphragm unit and a second irradiation side diaphragm unit in the laser beam irradiation direction of the laser beam irradiation unit, and the first irradiation unit. It is preferable that an optical path connecting the side diaphragm portion and the second irradiation side diaphragm portion is attached in parallel to the support member of the one unit.

  The optical path connecting the first irradiation side stop and the second irradiation side stop is parallel to the support member of one unit. Therefore, when the laser light irradiated through the first irradiation side diaphragm and the second irradiation side diaphragm is irradiated to the laser light receiving means of the other unit, the support member of the other unit is It is located on a straight line with respect to the support member, and the support member of the other unit is parallel to the first irradiation side stop and the second irradiation side stop. As a result, one unit and the other unit can be accurately aligned linearly.

  Further, in the present invention, the support member of the other unit includes a first incident side diaphragm unit and a second incident side diaphragm unit on the incident side of the laser beam to the laser beam receiving unit, It is preferable that an optical path connecting one incident side diaphragm unit and the second incident side diaphragm unit is attached in parallel to the support member of the other unit.

  The optical path connecting the first incident side stop and the second incident side stop is parallel to the support member of the other unit. Therefore, when the laser light incident through the first incident side diaphragm unit and the second incident side diaphragm unit is irradiated to the laser light receiving unit of the other unit, the support member of the other unit It is located on a straight line with respect to the support member. As a result, one unit and the other unit can be accurately and linearly aligned.

  In the present invention, it is preferable that the support member of the other unit is provided with an entrance-side stop on the incident side of the laser beam to the laser beam receiving means.

  Since it is possible to prevent the laser beam from being inclined and irradiated by the entrance-side stop, the alignment accuracy can be improved.

  In the present invention, the incident-side diaphragm unit includes a diaphragm having a diameter larger than the diaphragm diameters of the first irradiation-side diaphragm unit and the second irradiation-side diaphragm unit, and a transparent plate that transmits laser light. Preferably, the diaphragm is attached to the diaphragm.

  Since the entrance-side stop has a large-diameter stop and a transparent plate, even if the laser light from the laser light irradiation means is slightly deviated from the center of the entrance-side stop, the laser light is applied to the transparent plate of the entrance-side stop. The incident can be visually recognized. Therefore, it is possible to easily perform alignment so that the laser beam is incident on the center of the entrance stop portion. As a result, workability can be improved.

  In the present invention, it is preferable that the transparent plate includes a light-reducing portion that attenuates the laser light around the center portion (Claim 6).

  Since the laser beam can be easily visually recognized by the light-reducing portion of the transparent plate, the workability can be further improved.

  In the present invention, the laser light irradiation means and the laser light receiving means are attached to support members of the one unit and the other unit in a posture in which optical paths are orthogonal to each other, It is preferable that a reflection unit disposed at an inclined posture of 45 ° is provided to guide the laser beam from the irradiation unit to the laser beam receiving unit.

  Since the laser light is reflected by the reflection means having a 45 ° posture, it is possible to align one unit and the other unit in a posture orthogonal to each other.

  In the present invention, the laser light irradiation means can be selected and attached to a support member that constitutes one surface of the one unit, and the laser light receiving means is any one of the other units. It is preferable that the support member constituting one surface can be selected and attached (Claim 8).

  Since the laser beam irradiation unit and the laser beam receiving unit can be selectively attached to the support member, alignment to a desired posture such as a linear position or a right angle position can be performed.

  In the present invention, at least one unit is disposed as an intermediate unit between the one unit and the other unit, and the laser beam from the laser beam irradiation unit is transmitted through the intermediate unit to the laser. It is preferable to perform alignment so that the light receiving means receives light.

  Even when an intermediate unit is arranged between one unit and the other unit, at least three units can be aligned by receiving laser light through the intermediate unit.

  In the present invention, the intermediate unit includes a diaphragm portion on a support member, and the laser light receiving unit receives the laser beam from the laser beam irradiation unit through the diaphragm unit of the intermediate unit. Preferably, this is done (claim 10).

  By providing the intermediate unit with a diaphragm, it is possible to perform alignment with higher accuracy.

  According to an eleventh aspect of the present invention, there is provided a printing apparatus arrangement position adjusting method comprising a plurality of units constituting a conveyance path for conveying a print medium, wherein the unit is provided in one unit and constitutes one unit. A process of irradiating the support member with laser light whose optical path is parallel to the support member, and a support member provided in the other unit and constituting the other unit And a step of adjusting the arrangement position so that the laser light receiving means attached to the laser light receiving means is irradiated with the laser light from the laser light irradiating means.

  [Operation / Effect] According to the invention described in claim 11, the laser light is irradiated from the laser light irradiation means of one unit, and the laser light receiving means of the other unit is irradiated with the laser light. This unit or the other unit, or the arrangement position of one unit and the other unit is adjusted. Laser light travels straight without diffusing because of its high coherence. Therefore, precise positioning can be performed by optical positioning that performs positioning so that laser light can be received.

  In the present invention, at least one unit is arranged as an intermediate unit between the one unit and the other unit, and the process of adjusting the arrangement position is performed by the intermediate unit from the laser beam irradiation means. It is preferable to perform alignment so that the laser light receiving means receives the laser light through the intermediate unit.

  Even when an intermediate unit is arranged between one unit and the other unit, at least three units can be aligned by receiving laser light through the intermediate unit.

  According to the printing apparatus according to the present invention, the laser light irradiated from the laser light irradiation means attached to one unit in the optical path parallel to the unit is applied to the laser light receiving means attached to the other unit. Align so that it is irradiated. Laser light travels straight without diffusing because of its high coherence. Therefore, positioning can be performed precisely by optical positioning that performs positioning so that the laser beam is irradiated.

1 is a side view illustrating a schematic configuration of a printing apparatus according to an embodiment. 1 is a plan view illustrating a schematic configuration of a printing apparatus according to an embodiment. It is a partially expanded view which shows the 1st form of a positioning assistance apparatus. It is a figure with which it uses for operation | movement description of the positioning assistance apparatus of a 1st form. It is a partially expanded view which shows the 2nd form of a positioning assistance apparatus. It is a partially expanded view which shows the 3rd form of a positioning assistance apparatus. It is a schematic diagram which shows the entrance side aperture | diaphragm | squeeze part at the time of the alignment in the alignment assistance apparatus of a 2nd form. It is a partially expanded view which shows the 4th form of a positioning assistance apparatus. It is a schematic diagram which shows the entrance side aperture | diaphragm | squeeze part at the time of the alignment in the alignment assistance apparatus of a 4th form. It is a partially expanded view which shows the 5th form of a positioning assistance apparatus. It is a schematic diagram which shows alignment of three units.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view illustrating a schematic configuration of a printing apparatus according to the embodiment. FIG. 2 is a plan view illustrating a schematic configuration of the printing apparatus according to the embodiment. In the following description, an inkjet printing system that is an inkjet printing apparatus will be described as an example of a printing apparatus, but the present invention can also be applied to printing apparatuses of other systems.

  An ink jet printing system 1 corresponding to a “printing apparatus” in the present invention includes a paper feed unit 3, an ink jet printing device 5, and a paper discharge unit 7.

  The paper supply unit 3 holds the roll-shaped continuous paper WP so as to be rotatable around a horizontal axis, and unwinds and supplies the continuous paper WP to the inkjet printing apparatus 5. The ink jet printing apparatus 5 performs printing on the continuous paper WP. The paper discharge unit 7 winds the continuous paper WP printed by the inkjet printer 5 around the horizontal axis. When the supply side of the continuous paper WP is the upstream side and the discharge side of the continuous paper WP is the downstream side, the paper feed unit 3 is disposed on the upstream side of the inkjet printing apparatus 5, and the paper discharge unit 7 is downstream of the inkjet printing apparatus 5. Arranged on the side.

  The continuous paper WP corresponds to the “print medium” in the present invention.

  The inkjet printing apparatus 5 includes an entrance unit 9, a first intermediate unit 11, a second intermediate unit 13, and an exit unit 15 in order from the paper feed unit 3 side. The ink jet printing apparatus 5 is configured by appropriately selecting and connecting the units 9, 11, 13, and 15 described above. In the first apparatus, all units are provided.

  The entrance unit 9 includes a driving roller 17 and a nip roller 19, an edge position control unit 21, a driving roller 17 and a nip roller 19, four transport rollers 23, and two inkjet heads 25 in order from the paper feeding unit 3 side. And. The driving roller 17 and the nip roller 19 take in the continuous paper WP from the paper feeding unit 3. The edge position control unit 21 automatically corrects the position when the continuous paper WP meanders so that the continuous paper WP is appropriately conveyed. The four transport rollers 23 are in contact with the lower surface of the continuous paper WP and smoothly transport the continuous paper WP. The ink jet head 25 is for ejecting ink droplets onto the continuous paper WP to form a print image.

  The first intermediate unit 11 includes four transport rollers 23 and two inkjet heads 25.

  The second intermediate unit 13 has the same configuration as the first intermediate unit 11 described above. That is, four transport rollers 23 and two inkjet heads 25 are provided. For example, the two inkjet heads 25 eject gold ink on the upstream side and eject the overcoat material on the downstream side.

  The outlet unit 15 includes a transport roller 23, a heat drum 27, a transport roller 23, an inspection unit 29, a drive roller 17, and a nip roller 19 in order from the upstream side of the transport path. The heat drum 27 incorporates a heater and is driven to rotate in accordance with the conveyance of the continuous paper WP. The heat drum 27 heats and dries the ink droplets discharged onto the continuous paper WP. The inspection unit 29 inspects for print defects such as dirt and missing in the print image formed on the continuous paper WP.

  Note that the paper feed unit 3, the entrance unit 9, the first intermediate unit 11, the second intermediate unit 13, the exit unit 15, and the paper discharge unit 7 described above correspond to the “unit” in the present invention. To do.

  The paper feed unit 3, the entrance unit 9, the first intermediate unit 11, the second intermediate unit 13, the exit unit 15, and the paper discharge unit 7 described above are disposed inside the external panel indicated by a solid line. A support member F is provided. Exactly, the external panel shown by the solid line is attached to each support member F. Here, the support members F arranged on both side surfaces are set as the horizontal support members SF, and in each part, the upstream support member F in the transport direction of the continuous paper WP is set as the front support member FF, and in the transport direction of the continuous paper WP. The downstream support member F is referred to as a rear support member BF. In FIG. 2, only the support member F of a necessary part is shown for the explanation to be described later.

  In this embodiment, it is assumed that the arrangement position of the entrance unit 9 and the paper feed unit 3 is adjusted. The entrance unit 9 and the paper feed unit 3 are attached with an alignment assisting device 31. Hereinafter, various forms of the alignment assisting device 31 will be described.

  <First form>

  Please refer to FIG. FIG. 3 is a partially enlarged view showing a first form of the alignment assisting device.

  The alignment assisting device 31 includes a laser light irradiation unit 33 and a laser light detection unit 35. Here, the laser light irradiation unit 33 is attached to the lateral support member SF of the paper feed unit 3, and the laser light detection unit 35 is attached to the lateral support member SF of the first intermediate unit 11. The sheet feeding unit 3 corresponds to “one unit” in the present invention, and the entrance unit 9 corresponds to “the other unit” in the present invention.

  The laser beam irradiation unit 33 includes a laser beam irradiation unit 37 corresponding to the “laser beam irradiation unit” in the present invention, a first irradiation side diaphragm unit A1, and a second irradiation side diaphragm unit A2.

  The laser beam irradiation unit 37 has a built-in laser oscillator and irradiates the laser beam LB from the irradiation unit 39 only in a predetermined direction. The first irradiation side stop A1 and the second irradiation side stop A2 each have a stop ap at the center. These diaphragms ap are supported horizontally by the first irradiation side diaphragm A1 and the second irradiation side diaphragm A2 so as to coincide with the center of the irradiation unit 39 of the laser beam irradiation unit 37. It is attached to the member SB. The optical path connecting the stop ap of the first irradiation side stop A1 and the stop ap of the second irradiation side stop A2 is attached to the lateral support member SB so as to be parallel to the lateral support member SB. .

  The laser light detection unit 35 includes a laser light detection section 41 corresponding to the “laser light receiving means” in the present invention, a first incident side diaphragm section A3, and a second incident side diaphragm section A4.

  The laser light detection unit 41 has light reception sensitivity for the laser light LB, and detects only the laser light LB incident from the light reception unit 43. When the incidence of the laser beam LB is detected, it is preferable to notify the operator by notifying means such as a lamp or a buzzer (not shown). The first incident side diaphragm unit A3 and the second incident side diaphragm unit A4 each include a diaphragm ap at the center. The first incident side diaphragm portion A3 and the second incident side diaphragm portion A4 are lateral support members of the entrance unit 9 so that these diaphragms ap coincide with the light receiving section 43 of the laser light detection section 41. It is attached to SB. The diaphragm ap of the first incident side diaphragm section A3 and the diaphragm ap of the second incident side diaphragm section A4 are attached to the lateral support member SB so as to be parallel to the lateral support member SB.

  As shown in FIG. 3, the laser beam irradiation unit 33 and the laser beam detection unit 35 described above have the horizontal support member SF of the paper feed unit 3 and the horizontal support member SF of the entrance unit 9 aligned in a straight line in plan view. Only in this state, the positional relationship of each part is determined so that the laser beam LB is detected by the laser beam detection unit 35.

  Reference is now made to FIG. FIG. 4 is a diagram for explaining the operation of the alignment assisting device according to the first embodiment. The alignment is performed by first irradiating the laser beam LB and then adjusting the arrangement position of each part so that the laser beam LB is detected by the laser beam detection unit 35.

  The sheet feeding unit 9 indicated by a two-dot chain line in FIG. 4 is inclined with respect to the entrance unit 9. In this case, the laser beam LB (indicated by the two-dot chain line with an arrow) irradiated from the laser beam irradiation unit 33 passes through the first irradiation side diaphragm unit A1 and the second irradiation side diaphragm unit A2. The laser beam LB is not detected by the laser beam detection unit 35 because it is moved by the first incident side stop A3 on the laser beam detection unit 35 side. Therefore, the operator finely adjusts and adjusts the arrangement position of the entrance unit 9 or the sheet feeding unit 3 or the entrance unit 9 and the sheet feeding unit 3 so that the laser beam detection unit 35 is irradiated with the laser beam LB. I do. As a result, as shown by a solid line in FIG. 4, when the paper feed unit 3 and the lateral support member SB of the entrance unit 9 are positioned on a straight line, the laser beam LB is applied to the light receiving unit 43 of the laser beam detection unit 35. Irradiated. As a result, a signal is output from the laser light detection unit 35 to the notification means, and it can be known that the arrangement position is in a straight line.

  <Second form>

  Please refer to FIG. FIG. 5 is a partially enlarged view showing a second form of the alignment assisting device. In addition, about the same structure as the 1st form mentioned above, detailed description is abbreviate | omitted by attaching | subjecting a same sign.

  The alignment auxiliary device 31A includes a laser light irradiation unit 33 and a laser light detection unit 35A. The laser light detection unit 35A is composed of only the laser light detection unit 41 and the first incident side diaphragm unit A3.

  Thus, even if the laser light detection unit 35A side is only the first incident side stop portion A3, which is one stop, the same effects as those of the first embodiment described above can be achieved while suppressing the cost.

  <Third embodiment>

  Please refer to FIG. 6 and FIG. FIG. 6 is a partially enlarged view showing a third form of the alignment assisting device. FIG. 7 is a schematic diagram showing an entrance-side stop at the time of alignment in the alignment auxiliary device of the third embodiment. In addition, about the same structure as the 1st-2nd form mentioned above, it abbreviate | omits about detailed description by attaching | subjecting a same sign.

  The alignment auxiliary device 31B includes a laser light irradiation unit 33 and a laser light detection unit 35B. The laser light detection unit 35B includes only the laser light detection unit 41 and the first incident side diaphragm unit A3B. The first incident side stop A3B includes a stop ap having a larger diameter than the stops ap of the first irradiation side stop A1 and the second irradiation side stop A2. In the first incident side stop A3B, a transparent plate 45 is attached to the laser light detector 41 side so as to cover the stop ap.

  When the sheet feeding unit 3 and the entrance unit 9 are not positioned on a straight line and are slightly shifted from each other, the alignment assisting device 31B has the signs LB (1) and LB (2 ) Is located on the outer peripheral side of the stop ap. Since the aperture ap has a large diameter and the transparent plate 45 is attached, it can be visually recognized how much the laser beams LB (1) and LB (2) that are misaligned deviate from the center. Therefore, workability can be improved when the paper feed unit 3 or the entrance unit 9 is moved to adjust the position.

  <4th form>

  Please refer to FIG. 8 and FIG. FIG. 8 is a partially enlarged view showing a fourth form of the alignment assisting device. FIG. 9 is a schematic diagram showing an entrance-side stop at the time of alignment in the alignment auxiliary device of the fourth embodiment. In addition, about the same structure as the 1st-3rd form mentioned above, it abbreviate | omits about detailed description by attaching | subjecting a same sign.

  The alignment auxiliary device 31C includes a laser light irradiation unit 33 and a laser light detection unit 35C. The laser light detection unit 35C includes only the laser light detection unit 41 and the second incident side diaphragm unit A3C. The first incident side stop A3C is formed with a stop ap having a larger diameter than the stops ap of the first irradiation side stop A1 and the second irradiation side stop A2. In the second incident side stop A3C, a transparent plate 47 is attached to the laser light detector 41 so as to cover the stop ap. The transparent plate 47 is formed with a light reducing portion 49 on the outer peripheral side excluding the central portion thereof. The light reduction unit 49 reduces the light amount of the laser light LB.

  When the sheet feeding unit 3 and the entrance unit 9 are not positioned on a straight line and are slightly displaced, the alignment assisting device 31C has the signs LB (1) and LB (2 ) Is located on the outer peripheral side of the stop ap. Since the aperture ap has a large diameter and the transparent plate 47 is attached, it can be visually recognized how much the laser beams LB (1) and LB (2) that are displaced are displaced from the center. Moreover, since the laser beam LB is dimmed by the dimming unit 49, it can be more easily recognized. Therefore, workability can be improved when the paper feed unit 3 and the entrance unit 9 are moved to adjust the position.

  <5th form>

  Please refer to FIG. FIG. 10 is a partially enlarged view showing a fifth form of the alignment assisting device. In addition, about the same structure as the 1st form mentioned above, detailed description is abbreviate | omitted by attaching | subjecting a same sign.

  In the alignment assisting device 31 </ b> D, the laser light irradiation unit 33 is attached to the lateral support member SF of the paper feed unit 3, and the laser light detection unit 35 is attached to the front support member FF of the entrance unit 9. The laser beam irradiation unit 33 has an optical path such that when the lateral support member SB of the paper feed unit 3 and the front support member FF of the entrance unit 9 are arranged at right angles, the optical paths cross each other at right angles. And a laser light detection unit 35 are provided. Further, the horizontal support member SF of the entrance unit 9 is provided with a reflecting plate 51 in an inclined posture (corresponding to “reflecting means” in the present invention). The reflection plate 51 reflects the laser beam LD, and has a 45 ° attitude with respect to the front support member FF of the entrance unit 9 by the attachment member 53 at the corner between the horizontal support member SF and the front support member FF. It is attached to become.

  According to the above configuration, since the laser beam LB is reflected by the reflection plate 51 in the 45 ° posture, the lateral support member SB of the paper feed unit 3 and the front support member FF of the entrance unit 9 are aligned in an orthogonal posture. Can do.

  According to the inkjet printing system 1 provided with the alignment assist devices 31, 31 </ b> A to 31 </ b> D in the various forms described above, the laser beam LB from the laser beam irradiation unit 33 attached to the paper feed unit 3 can be attached to the entrance unit 9. Position alignment is performed so that the laser light detection units 35 and 35A to 35C are irradiated. Since the laser beam LB has high coherence, it travels straight without diffusing. Therefore, positioning can be performed precisely by optical positioning that performs positioning so that the laser beam LB can be irradiated.

  In the above-described example, the alignment of two units is performed. However, the alignment of at least three units can be performed as follows.

  Reference is now made to FIG. FIG. 11 is a schematic diagram showing the alignment of the three units.

  In this example, the paper feed unit 3, the entrance unit 9, and the first intermediate unit 11 are aligned. The sheet feeding unit 3 corresponds to “one unit” in the present invention, the entrance unit 9 corresponds to “the other unit”, and the first intermediate unit 11 corresponds to the “intermediate unit”.

  The alignment assisting device 31E includes a laser beam irradiation unit 33 in the paper feeding unit 3 and a laser beam detection unit 35 in the first intermediate unit 11. Further, the first intermediate unit 11 is provided with an intermediate diaphragm 55. The aperture 55 includes an aperture A5 on the front support member FF side and an aperture A6 on the rear support member BF side. The aperture portions A5 and A6 are attached so that the optical path connecting the centers of these apertures ap is parallel to the lateral support member SB. In addition, you may make it the aperture | diaphragm | squeeze part 55 provide only either one of two aperture | diaphragm | squeeze parts A5 and A6 in the horizontal support member SF.

  In the configuration as described above, the paper feed unit 3, the entrance unit 9, and the first unit so that the laser beam LB from the laser beam irradiation unit 37 is detected by the laser beam detection unit 41 through the entrance unit 9. By aligning with the intermediate unit 11, it is possible to align the three units.

  The present invention is not limited to the above embodiment, and can be modified as follows.

  (1) In the above-described embodiment, the alignment of the two units of the paper feeding unit 3 and the entrance unit 9 has been described as an example, but the linear alignment of the two units can be similarly performed with other units. Right-angle alignment can be performed. In addition, the three units of the paper feeding unit 3, the entrance unit 9, and the first intermediate unit 11 are aligned. Similarly, the positions of the other three units and three or more units are aligned. Combinations can also be made.

  (2) In the above-described embodiment, the example in which the alignment auxiliary devices 31 and 31A to 31E are attached to the lateral support member SF and the front support member FF of the support member F has been described. However, the laser beam detection unit 35 and the laser beam detection unit 35 can be attached by selecting the support member F that constitutes one surface of any unit. Therefore, alignment to a desired posture such as a straight line position or a right angle position can be performed.

  (3) In the above-described embodiment, the aperture portions A1 to A6 are provided. However, when the laser beam irradiation unit 37 can irradiate the support member F with parallel light by the optical system, the aperture unit A1. It is not necessary to provide ~ A6.

  (4) In the above-described embodiment, the laser light detection unit 35 is used, but a reflector may be used instead. In this case, linear alignment may be performed by detecting the laser beam recursively reflected by the reflector.

DESCRIPTION OF SYMBOLS 1 ... Inkjet printing system 3 ... Paper feed part 5 ... Inkjet printing apparatus 7 ... Paper discharge part 9 ... Entrance unit 11 ... 1st intermediate unit 13 ... 2nd intermediate unit 15 ... Outlet unit 31 ... Positioning auxiliary device 33 ... Laser beam irradiation unit 35... Laser beam detection unit 37... Laser beam irradiation unit 39... Irradiation unit ap... Diaphragm 41 .. Laser beam detection unit A1... First irradiation side aperture unit A2. 3 irradiation side diaphragm part A4 ... 4th irradiation side diaphragm part 43 ... light receiving part

Claims (12)

In a printing apparatus constituted by a plurality of units constituting a conveyance path for conveying a print medium,
Laser light irradiation means that is provided in one unit and is attached to a support member that constitutes one unit and irradiates laser light;
A laser light receiving means that is provided in the other unit, is attached to a support member constituting the other unit, and receives the laser light from the laser light irradiation means;
With
Positioning is performed so that the laser beam from the laser beam irradiation unit is irradiated to the laser beam receiving unit. The printing apparatus according to claim 1,
The support member of the one unit includes a first irradiation side diaphragm unit and a second irradiation side diaphragm unit in a laser beam irradiation direction of the laser beam irradiation unit,
A printing apparatus, wherein an optical path connecting the first irradiation side stop and the second irradiation side stop is attached in parallel to the support member of the one unit. The printing apparatus according to claim 1 or 2,
The support member of the other unit includes a first incident side diaphragm unit and a second incident side diaphragm unit on the laser beam incident side to the laser beam receiving unit,
A printing apparatus, wherein an optical path connecting the first incident side diaphragm unit and the second incident side diaphragm unit is attached in parallel to a support member of the other unit. The printing apparatus according to claim 1 or 2,
The printing apparatus according to claim 1, wherein the support member of the other unit is provided with an incident-side diaphragm on the incident side of the laser beam to the laser beam receiving unit. The printing apparatus according to claim 4,
The incident side diaphragm unit includes a diaphragm having a diameter larger than the diaphragm diameters of the first irradiation side diaphragm unit and the second irradiation side diaphragm unit, and a transparent plate that transmits laser light is attached to the diaphragm. A printing apparatus. The printing apparatus according to claim 5, wherein
The printing apparatus according to claim 1, wherein the transparent plate includes a light-reducing unit that attenuates laser light around the periphery of the transparent plate. The printing apparatus according to any one of claims 1 to 6,
The laser light irradiation means and the laser light receiving means are attached to a support member of the one unit and the other unit in a posture in which optical paths are orthogonal to each other,
The printing apparatus according to claim 1, wherein the optical path includes a reflection unit disposed at an inclination of 45 ° in order to guide the laser beam from the laser beam irradiation unit to the laser beam receiving unit. The printing apparatus according to claim 1 or 2,
The laser beam irradiation means can be attached by selecting a support member that constitutes one surface of the one unit,
The printing apparatus according to claim 1, wherein the laser light receiving unit is capable of selecting and attaching a support member that constitutes one surface of the other unit. The printing apparatus according to any one of claims 1 to 8,
At least one unit is arranged as an intermediate unit between the one unit and the other unit,
A printing apparatus, wherein alignment is performed so that the laser light from the laser light irradiation means is received by the laser light receiving means through the intermediate unit. The printing apparatus according to claim 9, wherein
The intermediate unit includes a throttle portion in the support member,
A printing apparatus, wherein alignment is performed so that laser light from the laser light irradiation means is received by the laser light receiving means through a diaphragm portion of the intermediate unit. In the arrangement position adjustment method of the printing apparatus constituted by a plurality of units constituting the conveyance path for conveying the print medium,
A process of irradiating a laser beam having an optical path parallel to the support member from a laser beam irradiation means provided in one unit and attached to a support member constituting the one unit;
A process of adjusting the arrangement position so that the laser beam from the laser beam irradiation unit is irradiated to the laser beam receiving unit provided in the other unit and attached to the support member constituting the other unit;
A method for adjusting the arrangement position of a printing apparatus. In the printing apparatus arrangement position adjustment method according to claim 11,
At least one unit is arranged as an intermediate unit between the one unit and the other unit,
In the process of adjusting the arrangement position, the alignment is performed so that the laser light from the laser light irradiation unit of the intermediate unit is received by the laser light receiving unit through the intermediate unit. Placement position adjustment method.

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