JP2002200799A - Recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recorder in which recording accuracy of a recording medium can be sustained at a high level. SOLUTION: A section 214 for guiding carriage of a recording medium at a recording section is provided with means 242 for adjusting the angle in the carrying direction of the recording medium and the angle in the perpendicular direction. Since the carriage guide section has a highly accurate flatness, the recording medium is prevented from floating above the carriage guide section regardless of the state of the recording medium and high accuracy recording can be sustained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus for recording information on a recording medium, and more particularly, to a recording apparatus in which a conveyance guide unit is modified.

[0002]

2. Description of the Related Art In general, a large-size printer, which is one of the conventional recording apparatuses, includes a paper supply unit for supplying a recording medium, for example, roll paper for printing, and a printing apparatus for printing information on the supplied roll paper. And a paper discharge unit for discharging printed roll paper are arranged from the top in this order. When using such a large-sized ink jet printer, for example, the user stores the roll paper in the paper feeding unit and pulls out the leading end of the roll paper. Then, the leading end of the roll paper is passed over a flat paper feed guide acting as a paper transport surface, and is sandwiched between a paper feed roller and a driven roller to start the printer.

Then, the ink jet printer rotates a paper feed roller to feed the roll paper onto a flat platen acting as a paper transport guide surface, and ejects ink droplets from nozzle openings of a print head to roll information. Print on paper. Then, the paper discharge roller is rotated to discharge the roll paper to the outside through a flat paper discharge guide acting as a paper conveyance surface.

[0004]

When assembling the above-mentioned conventional printer, it is necessary to adjust the angle of the platen to mount the printer flat. However, the angle of the platen is adjusted in a direction perpendicular to the roll paper transport direction, that is, Since it is performed only in the main scanning direction and not in the roll paper conveyance direction, that is, in the sub-scanning direction, it may be difficult to flatten the platen with high accuracy. For this reason, depending on the state of the roll paper, the printing may not be maintained due to floating on the platen.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a recording apparatus capable of maintaining the recording accuracy of a recording medium with high accuracy.

[0006]

According to a first aspect of the present invention, there is provided a recording apparatus for recording information on a recording medium, comprising: a conveyance unit for guiding conveyance of the recording medium in a recording unit. The guide section is provided with angle adjusting means for adjusting the angle of the recording medium in the transport direction and the direction perpendicular thereto. Accordingly, the flatness of the transport guide can be made high precision, so that floating on the transport guide can be prevented and high-precision recording can be maintained regardless of the state of the recording medium.

According to a second aspect of the present invention, in the recording apparatus according to the first aspect, the angle adjusting means has an elongated hole for screwing, and adjusts the angle of the conveyance guide portion within a range of the elongated hole. It is characterized by being fixed by fastening with screws. This makes it possible to easily adjust the angle of the transport guide, and reduce the number of assembly steps.

According to a third aspect of the present invention, in the recording apparatus according to the first or second aspect, the transport guide section is divided in a direction orthogonal to a transport direction of the recording medium.
The present invention is characterized in that the angle adjusting means is provided for each of the divided conveyance guide portions. Thereby, especially in the case of a large-sized recording apparatus, the length of the conveyance guide portion is lengthened, but the angle can be adjusted for a plurality of conveyance guide portions, so that the flatness can be improved.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view showing a configuration example of an ink jet printer which is one of the recording apparatuses according to an embodiment of the present invention, and FIG. 2 is an internal configuration example of a main part of the ink jet printer. FIG. The ink-jet printer 100 shown in FIGS. 1 and 2 is a large-sized printer that can print on a relatively large-sized printing paper such as JIS standard A0 size or JIS standard B0 size. Unit 120, paper discharge unit 13
0, the legs 140 are arranged in this order from the top. The printing unit 120 and the paper discharging unit 130 are integrated as a main body, and are configured to be separable from the paper feeding unit 110 and the leg 140, respectively.

As shown in FIG. 1, the paper feeding section 110 is provided so as to protrude to the upper rear of the main bodies 120 and 130. As shown in FIG. 2, roll paper holders 111 on which two roll papers (print papers) can be set are provided diagonally up and down inside the paper supply unit 110.
As shown in FIGS. 1 and 2, a flip-up type openable and closable roll paper cover 112 is provided on the front of the roll paper holder 11.
1 so as to cover it.

As shown in FIG. 2, a roll paper holder 111 includes a spindle 113 for holding roll paper, and a paper feeding unit 1.
10 attached to the inner surface of both side walls,
A pair of spindle receivers 114 that can be attached and detached and suspended,
115 is provided. After the roll paper is mounted in the center, both ends of the spindle 113
14 and 115, and are rotatably supported by a shaft. The roll paper cover 112 corresponds to FIGS.
As shown in FIG. 2, the upper part is rotatably supported, and is opened and closed by lifting or pressing down with the lower part.

As shown in FIG. 2, a printing unit 120 includes a carriage 122 on which a print head 121 is mounted, and a flexible flat cable (hereinafter referred to as F) for connecting the print head 121 to a control unit (not shown) for executing printing.
An ink tube 124 for connecting the print head 121 to an ink cartridge (not shown) containing ink, a paper feed roller (not shown) for transporting the roll paper in the sub-scanning direction, and a paper suction (not shown) for preventing the roll paper from floating. Means and the like. As shown in FIGS. 1 and 2, an upper lid 125 and a front lid 126 are provided on the upper surface and the front surface of the printing unit 120.
And the carriage 122 and the like.

The print head 121 includes a black ink print head for discharging black ink, and a plurality of color ink print heads for discharging ink of each color such as yellow, light cyan, cyan, light magenta, and magenta. ing. And print head 1
Reference numeral 21 denotes a pressure generating chamber and a nozzle opening connected to the pressure generating chamber. The ink is stored in the pressure generating chamber and pressurized at a predetermined pressure, whereby an ink droplet of a controlled size is directed from the nozzle opening toward the roll paper. Is discharged.

The carriage 122 is, as shown in FIG.
The carriage belt 128 is suspended from a rail 127 provided in the main scanning direction via a roller and connected to a carriage belt 128. When the carriage belt 128 is operated by a carriage driving device (not shown), the carriage belt 128 is moved.
, And is reciprocated by being guided by the rail 127.

The FFC 123 has one end connected to the connector of the control unit and the other end connected to the connector of the print head 121, and sends a print signal from the control unit to the print head 121. Ink tube 124
Are provided for ink of each color, and one end is connected to a corresponding ink cartridge of each color via an ink pressurizing supply unit (not shown), and the other end is connected to a print head 121 of each corresponding color. .

The ink tube 124 sends ink of each color pressurized by the ink pressurizing and supplying means from the ink cartridge to the print head 121. The front lid 126, as shown in FIGS. 1 and 2,
The lower part is rotatably supported, and can be opened and closed by holding the upper part and pushing down or pushing up.

As shown in FIGS. 1 and 2, a paper discharge section 130 forms a part of a path for transporting roll paper in the sub-scanning direction, and a paper discharge guide 131 transports roll paper in the sub-scanning direction. No paper ejection roller. Also, the paper discharge unit 13
As shown in FIGS. 1 and 2, a cartridge holder 150 for housing and holding an ink cartridge is disposed on the right side when viewed from the front side of the cartridge 0.

As shown in FIGS. 1 and 2, the leg 140 has two support columns 142 having rollers 141 for movement.
And a reinforcing rod 143 spanned between the support columns 142. The paper feed unit 110 and the main bodies 120 and 130 are placed on the support pillar 142 and fixed by screws.

In such a configuration, when the ink jet printer 100 is used, first, the paper feeding unit 11 is used.
Spindle 11 constituting roll paper holder 111 from 0
3 and take out the roll paper holder 113a inserted into the spindle 113 as shown in FIG.
13 Pull out from one end.

Then, as shown in FIG.
13 is inserted through one end of the shaft hole C of the roll paper R and penetrated therethrough, and as shown in FIG. 5, the one end of the shaft hole C of the roll paper R is inserted and fixed to the other end of the spindle 113. It is fitted into the paper holder 113b and brought into contact therewith. continue,
The roll paper holder 113a is inserted from one end of the spindle 113, and fitted into the other end of the shaft hole C of the roll paper R. This allows the roll paper R to rotate together with the spindle 113.

Next, as shown in FIG. 6, both ends of the spindle 113 in which the roll paper R is inserted are held obliquely with respect to the front-rear direction of the ink jet printer 100, that is, the roll paper R is inserted. Spindle 113
Is turned to the one spindle receiver 114.

Here, the spindle receiver 114 is configured to be rotatable in the horizontal direction.
Although the depressions 114a and 115a of the spindle receivers 114 and 115 that receive the end of the roll paper R face each other, when setting the spindle 113 into which the roll paper R is inserted,
As shown in FIG. 7, one spindle receiver 114 is rotated to make an angle of about 45 degrees with the other spindle receiver 115.

Thereafter, the other end of the spindle 113 into which the roll paper R is inserted is hung on the recess 114a of one of the spindle receivers 114, and the spindle 1 into which the roll paper R is inserted is placed.
13 and the spindle receiver 114 is rotated. The depression 114 of each spindle receiver 114, 115
a and 115 a are opposed to each other, and one end of the spindle 113 into which the roll paper R is inserted is placed in the other spindle receiver 115.
Over the hollow 115a. Thus, the spindle 113 into which the roll paper R has been inserted can be easily set on the paper feeding unit 110.

Next, as shown in FIG. 8, the leading end of the roll paper R is pulled out downward, and passed through the transport path of the printing unit 120.
Further, as shown in FIG. Then, as shown in FIG. 10, the roll paper R is rotated in the winding direction to position the leading end of the roll paper R at, for example, a marker M formed on the paper discharge guide 131.
Then, start the inkjet printer 100,
The print head 1 feeds the roll paper R in the sub-scanning direction.
The ink droplets are ejected while moving 21 in the main scanning direction, and predetermined information is printed on the roll paper R and discharged.

FIG. 11 is a schematic sectional side view showing a roll paper transport surface including a paper transport guide portion which is a characteristic part of the present invention, and FIG. 12 is a plan view showing the periphery of the paper transport guide portion. is there. The paper transport path from the paper supply unit 110 to the paper discharge unit 130 via the printing unit 120 is provided to be inclined from the upper rear surface side to the lower front surface side of the ink jet printer 100.

The paper transport path is provided by a flat paper feed guide 21 provided from the paper feed unit 110 to the print unit 120.
1. A paper feed roller 21 that is opposed to and can be contacted and separated.
2, a driven roller 213, a platen 214, which is a flat paper conveyance guide unit disposed to face the print head 121 mounted on the carriage 122, and a flat paper suction unit 215 provided from the printing unit 120 to the paper discharge unit 130. And a paper discharge guide 131 disposed in the paper discharge unit 130.

Each surface of the paper feed guide 211 and the paper discharge guide 131 functions as a paper transport surface. The surface of the paper suction unit 215 functions as a paper conveyance surface and a paper suction surface. That is, as shown in FIG. 12, the paper suction unit 215 includes a plurality of suction ports 215a, 215b, and 215c arranged in the main scanning direction and arranged in three rows in the sub-scanning direction.
As shown in FIG. 1, a fan 217 disposed inside the printing unit 120 urges the outside air into each suction port 215a, 215b,
By being sucked from the paper 15c, the roll paper conveyed on the paper suction unit 215 is sucked.

The surface of the platen 214 functions as a sheet conveyance guide surface and also as a sheet suction surface. That is, as shown in FIG. 12, the platen 214 has a plurality of suction ports 214a arranged in parallel in the main scanning direction.
As shown in FIG. 11, the outside air is sucked from each suction port 214a by a fan 217 disposed inside the printing unit 120, so that the roll paper conveyed on the platen 214 is sucked. . Accordingly, even when the width of the roll paper is particularly large during printing, the roll paper is reliably sucked over the entire width on the platen 214 and becomes flat, so that high printing accuracy can be maintained.

Further, as shown in FIG.
A gap C is provided between the printing unit 120 and the suction unit 215, and as shown in FIG.
The outside air is sucked from the gap C by the
The roll paper conveyed above is attracted.
Therefore, during printing, the platen 214 and the suction unit 2
Also, since the roll paper is sucked and becomes flatter by the platen 214 even between 15 and 15, the printing accuracy can be maintained at a higher accuracy.

FIG. 13 is a perspective view of the platen 214 as viewed from the back, and FIGS. 14A and 14B are a top view and a side view thereof. Here, since the ink jet printer 100 is large, the platen 214 also needs to be formed long in the main scanning direction. However, such a platen 21
Since it is difficult to form the platen 4 straight, a plurality of platens 214 having a length that can be formed straight as shown in FIG. 13 are formed and arranged in the main scanning direction.
That is, the platen 214 incorporated in the inkjet printer 100 has a configuration divided in the main scanning direction.

The platen 214 adjusts an angle in a main scanning direction and a sub-scanning direction provided on a back surface of the guide surface forming portion 241 having a sheet conveying guide surface formed on the front surface thereof. The angle adjusting means 242 is provided. The angle adjusting means 242 includes a pair of arms 242a vertically formed integrally on the back surfaces of both ends of the guide surface forming portion 241.
And the adjusting plate 2 bridged between these arms 242a.
42b.

An elliptical hole 242aa for screwing and a circular hole 242ab penetrating in the sub-scanning direction are provided on the pair of arms 242a so as to face each other in order from the free end side. The adjustment plate 242b includes a first adjustment plate 242ba extending in the sub-scanning direction and the first adjustment plate 242ba.
a pair of second adjustment plates 24 formed by bending both ends of ba so as to sandwich the pair of arms 242a from both sides.
2bb.

The first adjustment plate 242ba is provided with three elliptical holes 242baa for screwing in the sub-scanning direction, and the pair of second adjustment plates 242bb are provided with a pair of arms 2
Circular screw holes 242bba corresponding to the holes 242aa and 242ab of the 42a are provided so as to face each other.

When attaching the platen 214 having such a structure to the ink jet printer 100, first,
The screws are passed through the holes 242baa of the first adjustment plate 242ba and are temporarily fastened to the printer main body side.
bb from each screw hole 242bba to the hole 242aa, 242ab of each arm 242a, and temporarily fasten to the printer body through screws. This is all platen 2
14 is performed.

Next, as shown in FIG. 14 (A), the platen 214 is rotated in the direction of arrow a in the drawing while applying a dial gauge or the like so that each hole 242ba of the first adjusting plate 242ba is rotated.
The angle is adjusted in the range of a, and the screw is fastened at a predetermined angle. Subsequently, as shown in FIG. 14 (B), the platen 214 is rotated in the direction of the arrow b in the drawing while applying a dial gauge or the like to adjust the angle within the range of the hole 242aa of each arm 242a. Tighten the screws. As described above, the platen 214 that is adjusted in angle in the main scanning direction and the sub-scanning direction and flattened can be fixed to the printer main body.

In the above-described embodiment, a printer has been described as an example. However, the present invention is not limited to this, and the present invention is also applicable to a recording apparatus having a conveyance guide for a recording medium, such as a facsimile apparatus and a copying apparatus. is there.

[0038]

As described above, according to the recording apparatus of the present invention, since the flatness of the conveyance guide can be made high, regardless of the state of the recording medium, the conveyance guide can be formed on the conveyance guide. Floating can be prevented and high-accuracy recording can be maintained.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a configuration example of a printer according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an example of an internal configuration of a main part of the printer of FIG.

FIG. 3 is a first diagram illustrating a procedure for using the printer in FIG. 1;

FIG. 4 is a second diagram illustrating a procedure for using the printer in FIG. 1;

FIG. 5 is a third diagram illustrating a procedure for using the printer in FIG. 1;

FIG. 6 is a fourth diagram illustrating a procedure for using the printer in FIG. 1;

FIG. 7 is a fifth diagram illustrating the procedure for using the printer in FIG. 1;

FIG. 8 is a sixth diagram illustrating the procedure for using the printer in FIG. 1;

FIG. 9 is a seventh diagram illustrating the procedure for using the printer in FIG. 1;

FIG. 10 is an eighth diagram showing the procedure for using the printer in FIG. 1;

FIG. 11 is a schematic cross-sectional side view showing a roll paper transport surface including a paper transport guide unit which is a characteristic part of the present invention.

FIG. 12 is a plan view showing the periphery of a sheet conveyance guide shown in FIG. 11;

FIG. 13 is a perspective view of the sheet transport guide shown in FIG. 11 as viewed from the back.

14A and 14B are a top view and a side view of the sheet conveyance guide shown in FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Printer 110 Paper feed unit 111 Roll paper holder 112 Roll paper cover 113 Spindle 114 Spindle receiver 115 Spindle receiver 120 Printing unit 121 Printhead 122 Carriage 123 FFC 124 Ink tube 125 Top lid 126 Front lid 127 Rail 128 Carriage belt 130 Paper discharge unit 131 Discharge guide 132 Side cover 140 Leg 141 Roller 142 Support post 143 Reinforcement rod 150 Cartridge holder 211 Paper feed guide 212 Paper feed roller 213 Follower roller 214 Platen 214a Suction port 215 Paper suction section 215a, 215b, 215c Suction port 217 Fan C Gap 241 Guide surface forming part 242 Angle adjusting means 242a Arm 242aa, 242ab Hole 242b Adjusting plate 242ba No. Adjusting plate 242baa hole 242bb second adjustment plate 242bba screw hole

Claims (3)

[Claims] 1. A recording apparatus for recording information on a recording medium, comprising: an angle adjusting means for adjusting an angle of the recording medium in a conveying direction and a direction perpendicular to the conveying direction by a conveying guide unit for guiding the conveying of the recording medium in a recording unit. A recording device, comprising: 2. The apparatus according to claim 1, wherein said angle adjusting means includes an elongated hole for screwing, and adjusts an angle of said conveyance guide portion within a range of said elongated hole, and fixes the conveyance guide portion by fastening with a screw. 2. The recording device according to 1. 3. The conveyance guide section is divided in a direction orthogonal to the conveyance direction of the recording medium, and includes the angle adjusting means for each of the divided conveyance guide sections. Item 3. The recording device according to item 1 or 2.