JP2003118877A - Recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recorder capable of recording on the whole surface or almost the whole surface of a recording medium by holding the recording medium in a flat state at all times. SOLUTION: A tongue 209c for preventing the floating of the recording medium P is disposed between a recording means 208 and a discharging means 209b and also on the upper course side of the feeding direction of the recording medium P. Thus the floating of both the rear end parts of the recording medium is suppressed to maintain recording accuracy in a highly precise state even when the recording medium comes out of a feed roller pressing it.

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 ejecting a recording medium recorded by recording means via an ejecting means, and more particularly to a recording apparatus capable of recording on the entire surface or substantially the entire surface of the recording medium.

[0002]

2. Description of the Related Art Generally, an ink jet printer, which is one of recording devices, feeds paper stored in a paper feed tray by a paper feed roller, conveys it to a printing section by a paper feed roller, and ejects it by a paper ejection roller. It is generally configured to discharge the paper to a paper discharge tray. The paper discharge roller is provided with a zigzag roller and a driving roller which are arranged to face each other in the vertical direction, and the zigzag roller is arranged in the paper guide portion arranged on the upper side in the paper feeding direction.

[0003]

In the case where the above-mentioned inkjet printer is a printer capable of printing on the entire surface or substantially the entire surface of the paper, the printing is continued even after the trailing edge of the paper comes off the paper feed roller. At this time, since the paper is wet with the ink, if the paper feed roller that presses the rear end of the paper disappears, both ends of the rear end of the paper may curl. In this case, both ends of the trailing edge of the sheet are lifted, which may adversely affect the printing accuracy.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a recording apparatus capable of recording on the entire surface or substantially the entire surface of the recording medium while always keeping the recording medium flat.

[0005]

In order to achieve the above object, in a recording apparatus according to claim 1 of the present invention, in a recording apparatus for ejecting a recording medium recorded by the recording means through an ejecting means, A tongue for preventing the recording medium from being lifted up is disposed between the ejecting means and on the upstream side in the feeding direction of the recording medium.
As a result, even if the trailing edge of the recording medium comes off the feed roller that was holding it, it is possible to prevent the two edges of the trailing edge of the recording medium from rising, so that the recording accuracy can be maintained at a high level. You can

According to a second aspect of the present invention, in the recording apparatus according to the first aspect, the tongue pieces are arranged at intervals corresponding to the width of the recording medium. As a result, it is possible to maintain a high recording accuracy for various recording media.

According to a third aspect of the present invention, in the recording apparatus according to the first or second aspect, the tongue piece is integrally formed with a medium guiding portion in which the discharging means is arranged. There is. As a result, the number of parts does not increase, and it is possible to suppress an increase in cost.

The invention according to claim 4 is characterized in that the recording apparatus according to any one of claims 1 to 3 is capable of recording on the entire surface of the recording medium. As a result, it is possible to maintain the recording accuracy in a highly accurate state at the edge portion of the recording medium as in the other portions.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view of the entire exterior structure of an ink jet printer 101 as a recording apparatus according to an embodiment of the present invention as seen obliquely from the front, showing a state in which the paper discharge stacker 200 is erected. Show. FIG. 2 is a perspective view showing a state in which the sheet discharge stacker 200 is laid down, and FIG. 3 is a perspective view showing a state in which the upper housing is removed and the sheet discharge stacker 200 is removed.

As shown in FIG. 1, the ink jet printer 101 is provided with a housing 103 having the shape shown in the drawing which extends in the width direction.
Is composed of an upper housing 105 and a lower housing 107. A paper feed unit 109 including a paper feed tray 205a and a paper feed port (not shown) is formed on the rear side of the upper housing 105, and the paper discharge stacker 20 is provided on the front side.
As shown in FIG. 2 in which 0 is laid down, the paper output unit 113
Are formed.

A window portion 115 is provided from the upper portion to the front surface of the upper housing 105, and the window portion 115 is openably closed by a transparent curved plastic cover 117. On the rear side of the upper housing 105, a switch portion 121 is provided at one end in the width direction. The switch portion 121 includes a power system switch 121a and two operation system switches 121b, 121.
b is formed.

The output stacker 200 is rotatably attached to the front side of the lower housing 107 about a rotation axis of the lower part thereof, and is rotated by a predetermined angle in the fall direction during use and in the standing direction during storage. It is what makes me. Paper output stacker 200
Consists of a first-stage stacker member 202 on the base end side and a second-stage stacker member 204 on the front end side which is provided in the first-stage stacker member 204 so as to be retractable and retractable.

The stacker member 202 of the first stage is a sheet receiving member 20 on the inside for stacking the discharged sheets.
2A and an outer holder member 202B that holds the discharged sheet receiving member 202A. A shaft support boss (not shown) as a rotation shaft is arranged on the paper discharge receiving member 202A, while, as shown in FIG.
A bearing hole 206A is provided in the corresponding inner side surface 206 of No. 7.

The inner surface 20 of the lower housing 107
6 is provided with an arcuate guide hole 206B for restricting the rotation angle of the paper discharge stacker 200. The arc-shaped guide hole 206B is provided with, for example, locking hole portions 206b1 and 206b2 for maintaining the folded state and the standing state of the paper discharge stacker 200, respectively. In addition to the above-mentioned shaft support boss, a latch boss (not shown) capable of projecting / retracting is arranged on the paper discharge receiving member 202A, and this latch boss projects into the locking hole portion 206b1 in the collapsed state. In the engaged state and the raised state, the protruding state and the engaged state in the locking hole portion 206b2 maintain the folded state and the raised state of the paper discharge stacker 200.

FIG. 3 is a perspective view with the upper housing 105 removed, showing the main parts of the internal mechanism of the ink jet printer 101 formed on the lower housing 107. That is, in FIG. 3, a main board 201 that constitutes a printer controller is vertically arranged, and a carriage mechanism 20 that constitutes a print engine.
3, a paper feed mechanism 205, a print head 208, etc. are arranged.

The main board 201 has a CP (not shown).
Control elements such as U, ROM, RAM, and ASIC, storage elements, and other various circuit elements are formed, and the power system switch 121a and the operation system switches 121b and 121b described above are pressed on the upper ends thereof. The light emitting diodes 210a and 210a arranged so that the user can confirm that the switch is ON by emitting light respectively when
b and 210b are projected.

The carriage mechanism 203 includes the carriage 20.
3a, timing belt 203b, carriage motor 2
03c and the like, and the main scanning of the print head 208 is performed at a predetermined timing according to the print data. The paper feed mechanism 205 includes a paper feed motor 205b, a paper feed roller and a paper feed roller (not shown), a paper feed guide 205c, the paper feed tray 205a, and the paper discharge stacker 200 described above.
And the like, and the sub-scan is performed by feeding the recording paper in a direction orthogonal to the main scanning direction at a predetermined timing according to the print data.

The print head 208 includes a carriage 203.
Each color ink is supplied from ink cartridges 208a of four colors, for example, yellow, magenta, cyan, and black, which are stored on a, and full-color printing is possible. Then, the ejection timing of each color ink of the print head 208 and the drive control of the carriage mechanism 203 and the paper feed mechanism 205 are executed by a printer controller including a CPU formed on the main substrate 201, and highly accurate ink dot control, Halftone processing and the like are executed.

Then, as shown in the side view of the main part of FIG. 4, the paper P fed from the paper feed guide 205c is automatically fed out by a paper feed roller or the like, and a drive roller 207a constituting a paper feed roller. And the driven roller 207b, and the sheet is guided to the paper guide portion 207 disposed below the main scanning surface of the print head 208. Then, printing is performed on the paper guide portion 207, and the paper P is sent out to the paper guide portion 209 arranged on the upper side in the feeding direction of the paper P, and the drive roller 209a and the paper guide portion 209 which constitute the paper discharge roller.
It is sandwiched between the knurled rollers 209b provided in the sheet stacker and is discharged onto the sheet stacker 200.

FIG. 5 is a plan view showing the structure of the paper guide unit 209. The paper guide portion 209 is pressed by, for example, a sheet metal, and as shown in the enlarged perspective views of FIGS. 4 and 5, the end surface on the print head 208 side is substantially downward 90 degrees.
A tongue piece 209c for preventing the paper P from being lifted up is formed at a predetermined position on the end face.

The tongue piece 209c is formed so as to be inclined in the feeding direction of the paper P. As a result, it is possible to prevent the leading edge of the paper P from rising, and
The leading end of the sheet is not caught between the paper guide 209 and the serrated roller 209b, and the drive roller 209a and the serrated roller 20
It will be reliably sandwiched between 9b.

Further, four tongue pieces 209c are formed in the sub-scanning direction at intervals corresponding to the width of a sheet of A size or B size, for example. As a result, even if the rear end of the paper P comes off from the paper feed roller that holds it, it is possible to prevent the both ends of the rear end of the paper P from rising, so that the inkjet printer 101 can print on the entire surface of the paper. Even in the case of various models, it is possible to maintain high printing accuracy.

Although the present invention has been described above with respect to various embodiments, the present invention is not limited to the above embodiments, and other embodiments within the scope of the invention described in the claims. Needless to say, also applies. For example, although an inkjet printer has been described as an example of the recording apparatus, the recording apparatus is not limited to this, and any recording apparatus having a medium guiding unit may be, for example, a thermal transfer type printer, an inkjet type thermal transfer type facsimile, or the like. It can also be applied to a device, a copying device, and the like.

[0025]

As described above, according to the present invention,
Even if the trailing edge of the recording medium comes off from the feed roller that holds it, it is possible to suppress the lifting of both end portions of the trailing edge of the recording medium, so that the recording accuracy can be maintained in a highly accurate state.

[Brief description of drawings]

FIG. 1 is a perspective view of an entire exterior configuration of an inkjet printer as a recording apparatus according to an embodiment of the present invention, as viewed obliquely from the front.

FIG. 2 is a perspective view of a state in which a paper discharge stacker of the inkjet printer of FIG. 1 is laid down.

3 is a perspective view of the inkjet printer of FIG. 1 with an upper housing and a discharge stacker removed.

FIG. 4 is a side view of the main part of FIG.

5 is a plan view showing the configuration of the paper guide unit of FIG. 4. FIG.

[Explanation of symbols]

101 inkjet printer 103 housing 105 Upper housing 107 Lower housing 109 paper feeder 113 paper output section 115 window 117 plastic cover 121 Switch 200 Paper output stacker 201 Main board 202 Stacker member 204 Stacker member 202A Paper receiving member 202B holder member 203 Carriage mechanism 205 paper feed mechanism 206A bearing hole 206B guide hole 207 Paper guide 207a Drive roller 207b Driven roller 208 print head 209 Paper guide 209a drive roller 209b Giza Roller 209c tongue 210a light emitting diode 210b light emitting diode

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Satoshi Negishi             Seiko, 3-3-3 Yamato, Suwa City, Nagano Prefecture             -In Epson Corporation F-term (reference) 2C056 HA30 HA34                 3F101 FA01 FB05 FB11 FC01 FC11                       LA07 LB03

Claims (4)

[Claims] 1. A recording apparatus for ejecting a recording medium recorded by a recording means via an ejecting means, wherein the recording medium is between the recording means and the ejecting means and on the side closer to the feeding direction of the recording medium. A recording device having a tongue piece for preventing the floating of the recording medium. 2. The recording apparatus according to claim 1, wherein the tongue pieces are arranged at intervals corresponding to the width of the recording medium. 3. The recording apparatus according to claim 1, wherein the tongue piece is integrally formed with a medium guiding section in which the discharging unit is arranged. 4. The recording apparatus according to claim 1, wherein recording is possible on the entire surface of the recording medium.