JP2002205850A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printer that can prevent accidental winding of a recording medium after recording. SOLUTION: A winding part 300 rotates a winding roller on the basis of feed information on the recording medium inputted from a printer body, when winding up the recording medium after recording on the winding roller. The feed and winding of the recording medium can be thereby synchronously controlled to dispense with the sensor for detection of a sag in the recording medium, which have been required in a conventional printer for independent control of the winding. An accidental start of the winding part by erroneous actuation of the sensor can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer for recording information on a recording medium, and more particularly to a printer having a winding section for winding a recorded recording medium around a winding roller.

[0002]

2. Description of the Related Art Printers have relatively large recording media, for example, JIS standard A1 size and JIS standard B1 size.
There are large printers that can print on roll paper (printing paper) having a wide width. For such a large printer,
The roll paper on which printing has been completed is usually wound up by a winding device provided below the printer body.

FIG. 16A is a side view showing the periphery of a conventional winding device of a printer. A take-up device 2 provided in the printer 1 uses a take-up roller 3
From the front side. Then, when the optical sensor 4 having the light emitting unit and the light receiving unit disposed on the rear side with respect to the winding roller 3 detects the slack of the printed roll paper R to be discharged, The take-up roller 3 rotates.

At this time, when winding up with the printing surface outside, the winding roller 3 is rotated in the direction of arrow a in the drawing (forward).
The winding roller 3 is rotated (reversed) in the direction of the arrow b in the drawing when winding up with the printing surface inside.

[0005]

In the above-described winding device 2 of the conventional printer 1, the winding roller 3 is rotated by a detection signal of the optical sensor 4, but is disposed below the printer main body. Therefore, when the user accidentally puts his foot below the printer body, unintended winding may be started.

[0006] When winding by reverse rotation, as shown in FIG.
Must be loosened once in front of the winding roller 3,
There is a possibility that the printing surface of the slack portion may be contaminated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described various problems, and has as its object to prevent inadvertent winding of a recording medium on which recording has been performed. An object of the present invention is to provide a printer that can prevent contamination when a medium is wound.

[0008]

According to a first aspect of the present invention, there is provided a printer for recording information on a recording medium, wherein the recorded recording medium is wound around a take-up roller. And a winding unit for rotating the winding roller based on feed information of the recording medium input from the printer main body.

Thus, since the feeding and winding of the recording medium can be controlled synchronously, a sensor for detecting the slack of the recording medium which is necessary when independently controlling the winding as in a conventional printer. Becomes unnecessary. For this reason, careless start-up of the winding unit due to erroneous operation of the sensor can be prevented.

In order to achieve the above object, in a printer according to a second aspect of the present invention, in a printer for recording information on a recording medium, when the recorded recording medium is taken up by a take-up roller, the recording surface is directed outward. When taking up the recording medium, the recording medium is locked with respect to the winding roller from the front side, and when winding with the recording surface inward, the recording medium is locked with respect to the winding roller from the rear side. It is characterized by having a take part.

Thus, when the recording medium is wound with the recording surface inside, the recording medium can be immediately wound without being loosened in front of the winding roller. For this reason, contamination of the printing surface can be prevented.

In order to achieve the above object, in a printer according to a third aspect of the present invention, in a printer for recording information on a recording medium, when the recorded recording medium is taken up by a take-up roller, the recording surface is turned outward. When winding up, the recording medium is locked from the front side with respect to the winding roller, and when winding up with the recording surface inside, the recording medium is locked from the rear side with respect to the winding roller, A winding unit configured to rotate the winding roller based on feed information of the recording medium input from a printer main body.

Thus, when the recording medium is wound with the recording surface inside, the recording medium can be immediately wound without being loosened in front of the winding roller. For this reason, contamination of the printing surface can be prevented. Further, since the feeding and the winding of the recording medium can be controlled synchronously, a sensor for detecting the slack of the recording medium which is necessary when independently controlling the winding as in the conventional printer is unnecessary. . For this reason, careless start-up of the winding unit due to erroneous operation of the sensor can be prevented.

According to a fourth aspect of the present invention, in the printer according to any one of the first to third aspects, the winding unit includes:
It is characterized in that it is disposed on a leg supporting the printer body disposed below the recording unit. Accordingly, since there is no need to separately provide a disposing portion for disposing the winding portion, the overall structure of the printer can be reduced in size.

According to a fifth aspect of the present invention, in the printer according to the fourth aspect, the winding portion includes a pair of roller supporting portions for supporting both ends of the winding roller, and one of the roller supporting portions. Is fixedly attached to the leg, and the other roller support is movably attached to the leg.
As a result, the distance between the roller support portions can be easily adjusted to the predetermined distance, so that it is possible to immediately cope with recording media having different sizes in the main scanning direction.

According to a sixth aspect of the present invention, in the printer according to the fifth aspect, the movable roller supporting portion includes:
It is characterized in that a hook portion is provided which is hooked on a support column constituting the leg portion, moves along the support column, and is attached to the support column. This eliminates the need to lift and move the roller support, so that the roller support can be easily moved.

According to a seventh aspect of the present invention, in the printer according to the sixth aspect, the hook portion is provided with temporary fixing means for temporarily fixing a position at which the hook is attached to the support column. Thereby, since the roller support portion can be positioned, the roller support portion can be easily fixed.

According to an eighth aspect of the present invention, in the printer according to the seventh aspect, the temporary fixing means releases and temporarily fixes the temporary fixing by pressing and separating from the supporting column. . Thereby, the temporary fixing means can be constituted by simple mechanical parts, so that the manufacturing cost can be reduced.

According to a ninth aspect of the present invention, in the printer according to any one of the sixth to eighth aspects, the hooking section comprises:
It is characterized in that an attachment member for attaching to the support column is sandwiched and held between the support column and the support column. As a result, the roller support can be easily positioned and fixed, and the recording preparation time of the printer can be reduced.

[0020]

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 a printer according to an embodiment of the present invention, and FIG. 2 is a perspective view showing an internal configuration example of a main part of the printer. The printer 100 shown in FIGS. 1 and 2 is a large-sized ink jet printer capable of printing on relatively large-sized printing paper such as JIS standard A1 size or JIS standard B1 size. Unit 120, paper discharge unit 13
0, the legs 140 are arranged in this order from the top. The paper feeding unit 110 is configured to be separable from the integrated printing unit 120 and paper discharging unit 130, and these are configured as a printer main body. The printer body is configured to be separable from the leg 140.

As shown in FIG. 1, the paper feeding section 110 is provided so as to protrude to the upper rear of the printing section 120.
Then, as shown in FIG. 2, inside the paper feeding unit 110,
Roll paper holders 111 on which two roll papers (print papers) can be set are provided obliquely up and down, and a flip-up type openable and closable opening is provided on the front surface of the paper feed unit 110 as shown in FIGS. A roll paper cover 112 is attached so as to cover the roll paper holder 111.

As shown in FIG. 2, the roll paper holder 111 includes a spindle 113 for holding roll paper, and a paper feed 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, the 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) 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 the 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 unit 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 (supporting column) 143 spanned between the supporting columns 142. And the support pillar 14
The printer main bodies 110, 120, and 130 are mounted on the upper part of the printer 2 and fixed by screws.

In such a configuration, when the ink jet printer 100 is used, first, the paper feeding unit 11
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 into which the roll paper R is inserted are directed obliquely 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 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 perspective view schematically showing a winding device which is a characteristic part of the present invention. This winding device 300
Is a pair of roller support portions 31 that respectively support both ends of a take-up roller (not shown) around which printed roll paper is wound.
0 and 320 and are disposed on the leg 140. As described above, the winding device 300 is arranged on the existing leg 140, and there is no need to separately provide an arrangement portion. Therefore, the overall structure of the ink jet printer 100 can be reduced in size. Note that a core material of roll paper or the like is used as the winding roller.

One roller support 310 includes a case 311 in which a motor and a control device are incorporated, and a flange 312 fitted on the motor shaft.
1 is screwed and fixed to one support column 142. When the printed roll paper is taken up by the take-up roller, the roller support section 310 rotates the take-up roller based on roll paper feed information input from a printer main body via a cable (not shown). It has become.

Since the roll paper feed information and the roll paper feed information can be synchronously controlled based on the roll paper feed information, the roll paper required for independent control of the winding as in the conventional printer 1 is required. There is no need for the optical sensor 4 for detecting the looseness of the light. Therefore, it is possible to prevent the winding device 300 from being inadvertently activated even if the user accidentally puts his or her foot under the printer body.

The other roller support 320 is provided with a hook 32 used for moving and fixing the roller support 320 described later.
1 and a flange 322 rotatably supported by the hook portion 321. The hook portion 321 is hooked on a reinforcing rod (supporting column) 143 and fixed at a predetermined position with screws. The roller support 320 is provided with a flange 322
The hook 321 is hooked on the reinforcing bar (supporting column) 143 so that the hooking portion 321 faces the flange 312 of the roller supporting portion 310, and can move along the reinforcing bar (supporting column) 143.

The distance between the roller support 320 and the roller support 310 can be easily adjusted to a predetermined distance by the movement of the hook 321 along the reinforcing rod (support column) 143. Even if the roll paper wound by the winding roller sandwiched between the flange 312 and the roll paper has a different size in the main scanning direction, the roll paper can be set immediately. Further, the movement of the hook portion 321 along the reinforcing rod (support column) 143 eliminates the need to lift and move the roller support portion 320.
0 can be easily moved.

As shown in FIG. 12, the hook portion 321 is provided with a temporary fixing means 330 for temporarily fixing a position at which the hook portion 321 is attached to the reinforcing rod (supporting column) 143. This temporary fixing means 33
Reference numeral 0 denotes provisional fixation / temporary fixation release by pressing and separating from the reinforcing rod (support column) 143.

FIGS. 13A and 13B show the temporary fixing means 3.
It is the top view and side view which show the detail of 30. The temporary fixing means 330 comes into contact with and separates from one end side of the swinging portion 331 by the swinging portion 331 swingable around the swinging shaft 331a and the cam lever 332 rotating around the cam shaft 333a. A cam 333 and a tension coil spring 334 that is inserted into the swing shaft 331a and pulls the other end of the swing portion 331 in one direction are provided.

The swinging portion 331 has one end in contact with the cam 333 and is bent in a substantially L-shape, and a rubber sheet 331b is attached to a tip end. As described above, since the temporary fixing means 330 is formed by simple mechanical parts such as the cam 333 and the extension coil spring 334, the manufacturing cost is low.

The temporary fixing / temporary fixing release by the temporary fixing means 330 having such a configuration will be described with reference to FIGS. The state shown in FIG. 13 is a temporarily fixed state,
The cam 333 is in contact with one end of the swing portion 331 and pulls the extension coil spring 334. As a result, the rubber sheet 331b at one end on the one end side of the swinging portion 331 is pressed against the reinforcing rod (support column) 143 to temporarily fix the hook portion 321.

On the other hand, the state shown in FIG. 14 is a state in which the temporary fixation is released. 334 pulls the other end of the swing portion 331. As a result, the rubber sheet 331b at one end of the swinging portion 331 is separated from the reinforcing rod (supporting column) 143 to temporarily release the hooking portion 321.

By temporarily fixing the hook portion 321 by the temporary fixing means 330, the roller support portion 320 can be positioned at a predetermined position, so that screw fixing of the roller support portion 320 to be performed later can be easily performed. be able to.

Next, the screw fixing of the roller supporting portion 320 to a predetermined position will be described with reference to FIG. When screwing and fixing the roller support portion 320 at a predetermined position, three screw holes 32 provided in the hook portion 321 are provided.
1 a and three screw holes (not shown) provided at predetermined positions of the reinforcing rod (support column) 143 are aligned and screwed and fixed.

At this time, a portion between the screw hole 321 a provided on the lower side of the hooking portion 321 and the reinforcing bar (supporting column) 143 so that the hooking portion 321 does not come off from the reinforcing bar (supporting column) 143. A mounting member 323 having a substantially L-shaped cross section provided with a screw hole corresponding to the screw hole 321a is inserted and screwed and fixed together.

Since the mounting member 323 is pressed and held in the direction of the reinforcing rod (support column) 143 by the weight of the hook portion 321, the mounting member 323 is once sandwiched between the hook portion 321 and the reinforcing rod (support column) 143. Once this is done, screwing and fixing work can be performed without any support. Accordingly, the roller support 320 can be easily positioned and fixed, so that the printing preparation time of the ink jet printer 100 can be reduced. Then, the work of setting the roll paper on the winding roller to be performed later can be started promptly.

Next, the setting of the roll paper with respect to the winding roller will be described with reference to FIG. Here, when the printed roll paper R is taken up by the take-up roller 301, as described in the related art, there are a method of winding the print surface outside and a method of winding the print surface inside.

When winding up with the print side facing out, FIG.
As shown in (A), the leading end of the roll paper R is taken up by the winding device 30.
Front side with respect to the take-up roller 301 set to 0,
That is, the roll paper R is taken up by locking from the front side of the ink jet printer 100 and rotating the take-up roller 301 in the direction of arrow a in the figure. On the other hand, when winding with the printing surface inside, as shown in FIG. 15B, the leading end of the roll paper R is taken up by the winding roller 3 set in the winding device 300.
The roll paper R is wound by rotating the take-up roller 301 in the direction of the arrow b in the figure by locking the print paper from the rear side, that is, from the rear side of the ink jet printer 100.

Thus, when winding up with the printing surface outside, it is possible to wind up immediately as before, and when winding up with the printing surface inside, the roll paper R is once loosened in front of the winding roller. Since it can be wound up immediately without using it, contamination of the printed surface can be prevented.

[0054]

As described above, according to the printer of the present invention, when the recording medium is wound with the recording surface inside, the recording medium can be immediately wound without being loosened in front of the winding roller. Therefore, contamination of the printing surface can be prevented. Furthermore, since the feeding and winding of the recording medium can be controlled synchronously, there is no need for a sensor for detecting the slack of the recording medium which is necessary when independently controlling the winding as in a conventional printer. Inadvertent activation of the winding unit due to erroneous operation of the sensor can be prevented.

[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 perspective view schematically showing a winding device which is a characteristic part of the present invention.

12 is a perspective view showing one roller support of the winding device of FIG. 11;

13 is a plan view and a side view showing details of a temporary fixing means of the winding device of FIG. 11;

FIG. 14 is a side view showing the operation of the temporary fixing means of FIG.

FIG. 15 is a side view showing the operation of the winding device of FIG. 11;

And FIG. 16 is a side view showing the operation of a conventional printer winding device.

[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 cover 126 Front cover 127 Rail 128 Carriage belt 130 Paper discharge unit 131 Discharge guide 132 Side cover 140 Leg 141 Roller 142 Support column 143 Reinforcement rod 150 Cartridge holder 300 Roller 310 Roller support 311 Case 312 Flange 320 Roller support 321 Hook 321a Screw hole 322 Flange 323 Mounting member 330 Temporary fixing means 331 Swing section 331a Swing shaft 331b Rubber sheet 332 Cam lever 333 Cam 333a Cam shaft 334 Pull Coil spring

Claims (9)

[Claims] In a printer for recording information on a recording medium, when the recorded recording medium is taken up by a take-up roller,
A printer comprising: a winding unit configured to rotate the winding roller based on feed information of the recording medium input from a printer main body. 2. A printer for recording information on a recording medium, wherein the recorded recording medium is wound around a winding roller.
When winding up with the recording surface outward, the recording medium is locked from the front side with respect to the take-up roller, and when winding up with the recording surface inside, the recording medium is positioned rearward with respect to the take-up roller. A printer, comprising: a take-up portion that locks from a side. 3. A printer for recording information on a recording medium, wherein the recorded recording medium is wound around a winding roller.
When winding up with the recording surface outward, the recording medium is locked from the front side with respect to the take-up roller, and when winding up with the recording surface inside, the recording medium is positioned rearward with respect to the take-up roller. And a take-up unit that rotates the take-up roller based on feed information of the recording medium input from the printer main body side. 4. The apparatus according to claim 1, wherein the winding unit is provided on a leg supporting a printer main body disposed below the recording unit. Printer. 5. The winding section has a pair of roller supporting sections for supporting both ends of the winding roller, one of the roller supporting sections is fixedly attached to the leg section, and the other is fixed to the leg section. 5. The printer according to claim 4, wherein the roller support is movably attached to the leg. 6. The movable roller support portion includes a hook portion which is hooked on a support column constituting the leg portion, moves along the support column, and is attached to the support column. Item 6. The printer according to Item 5. 7. The printer according to claim 6, wherein the hook portion includes temporary fixing means for temporarily fixing a position when the hook is attached to the support column. 8. The printer according to claim 7, wherein the temporary fixing unit releases and temporarily fixes the temporary fixing by pressing and separating the supporting column. 9. The printer according to claim 6, wherein the hook portion holds an attachment member for attaching to the support column by sandwiching the attachment member between the support column and the support member. .