JP3700572B2 - Ink jet printer, means for avoiding contact with recording medium, and mounting method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, a recording medium is sandwiched between a main driving roller and a driven roller and sent out for information recording by a print head, and the recording medium is sandwiched between a sub driving roller and a toothed roller for discharging. The present invention relates to an ink jet printer that sends out to a printer, a means for avoiding contact with a recording medium, and a mounting method thereof.
[0002]
[Prior art]
In general, an ink jet printer supplies a recording medium such as paper by an auto sheet feeder (automatic continuous paper feeding mechanism) or manually, and sandwiches the paper between a main driving (paper feeding) roller and a driven roller. Information is printed on the paper by rotating the paper feed roller and feeding out the paper, pressurizing the ink in the pressure generation chamber of the print head and ejecting ink droplets from the nozzle openings. Then, the paper is sandwiched between a secondary movement (paper discharge) roller and a toothed roller (paper discharge jagged), the paper discharge roller is rotated to feed the paper, and discharged onto the paper discharge stacker.
[0003]
In the ink jet printer having such a configuration, the driven roller disposed on the paper supply side is formed in a cylindrical shape and feeds the paper by friction with the paper. Further, the paper discharge serration disposed on the paper discharge side has a peripheral edge formed in a saw blade shape so that the paper is cut into the paper and sent out. This prevents paper swell at the time of delivery and allows paper to be supplied and discharged smoothly.
[0004]
[Problems to be solved by the invention]
Recently, optical discs such as CD-R, which can record information individually, have become widespread. However, there is an increasing demand for personally printing the optical disc label after recording. Therefore, if the optical disk is fixed to a tray made of plastic or the like and supplied to an ink jet printer, the label of the optical disk can be printed.
[0005]
However, as shown in FIG. 8, the ink jet printer is provided with a paper discharge serrated 1 for preventing the recording medium P from being swung at the time of sending out and smoothly supplying and discharging the recording medium P. . The paper discharge serration 1 is generally disposed above the paper discharge roller 2, that is, on the printing surface PF side of the recording medium P. For this reason, when the recording medium P is an optical disk, there is a problem in that the paper discharge jaw 1 bites into the printing surface of the optical disk and scratches it.
[0006]
In general, since an optical disk is generally coated on a plastic substrate with an information recording layer, a laser light reflecting layer, a protective layer, and a printing layer on the order of microns, if the printed surface is damaged by the paper discharge serration, the information recording layer In addition, the laser light reflecting layer may be destroyed, and the information recording characteristics of the optical disk may be deteriorated (deteriorated).
[0007]
The present invention has been made in view of the various problems as described above, and an object of the present invention is to provide an ink jet printer capable of preventing the printing surface of the recording medium from being damaged, a contact avoidance means for the recording medium, and its mounting. It is to provide a method.
[0008]
[Means for solving the problems]
In order to achieve the above object, in the present invention, a printer head that prints information by ejecting ink droplets onto a recording medium, a feed roller and a driven roller that sandwich the recording medium and feed it from the supply side to the printing side, and the recording medium In an ink jet printer having a discharge roller and a toothed roller that are fed from the printing side to the discharge side by sandwiching the recording medium, after the recording medium is sandwiched between the discharge roller and the toothed roller, the toothed roller A contact avoiding means configured to be attachable and detachable, having a claw that is mounted by being engaged with the toothed roller, and has a claw that separates the toothed roller from the discharge roller to avoid contact between the toothed roller and the recording medium. It is characterized by having prepared.
[0009]
Thereby, it is possible to cope with a case where the tooth biting trace of the toothed roller may be attached to the printing surface of the recording medium and a case where the tooth biting trace of the toothed roller is not desired to be attached to the printing surface of the recording medium. Therefore, it is possible to print even a recording medium that could not be printed due to the biting of the teeth of the toothed roller.
[0010]
In addition, since the separation between the toothed roller and the discharge roller can be reliably maintained, the contact between the toothed roller and the printing surface of the recording medium can be reliably avoided. Since it is separated from the discharge roller by a distance larger than the thickness of the medium, it is possible to reliably avoid contact between the toothed roller and the printing surface of the recording medium.
[0011]
Further, since the contact avoiding means having the claw is configured to be detachable with respect to the printer main body, it is possible to quickly contact and separate according to the type of the recording medium.
[0012]
In the inkjet printer of the present invention, a printer head that prints information by ejecting ink droplets onto a recording medium, a feed roller and a driven roller that sandwich the recording medium and feed the recording medium from the supply side to the printing side, and sandwich the recording medium In the ink jet printer having a discharge roller and a toothed roller that are fed from the printing side to the discharge side, a first contact having a cam mechanism that separates the toothed roller from the discharge roller and contacts the discharge roller The avoiding means and the recording medium are sandwiched between the discharge roller and the toothed roller and then mounted by being locked to the toothed roller, and the toothed roller is separated from the discharge roller. A second contact avoiding means configured to be detachable, having a claw for avoiding contact between the toothed roller and the recording medium; And butterflies.
[0013]
As a result, even if the cam mechanism alone cannot provide a separation distance between the toothed roller and the discharge roller due to restrictions on the shape of the printer, the distance between the toothed roller and the discharge roller is increased by the claw. Therefore, contact between the toothed roller and the printing surface of the recording medium can be avoided regardless of the shape of the printer.
[0014]
In the ink jet printer of the present invention, the recording medium is an optical disc and a fixed tray for positioning the optical disc.
[0015]
This can prevent the toothed roller from scratching the printing surface of the optical disc, thereby preventing deterioration (deterioration) of the information recording characteristics of the optical disc due to the destruction of the information recording layer and the laser light reflecting layer of the optical disc. it can.
[0016]
The contact avoidance device used in the ink jet printer according to the present invention avoids contact between the toothed roller and the recording medium among the discharge roller and the toothed roller that sandwich the recording medium and feed the recording medium from the printing side to the discharge side. A contact avoidance device, which is configured to be detachable from a printer main body, and is mounted by locking the recording medium after the recording medium is sandwiched between the discharge roller and the toothed roller, The toothed roller has a claw for separating the toothed roller from the discharge roller to avoid contact between the toothed roller and the recording medium.
[0017]
Thereby, depending on the type of the recording medium, the tooth biting trace of the toothed roller may be attached to the printing surface of the recording medium, and the case where it is not desired to apply the biting trace of the toothed roller to the printing surface of the recording medium. Therefore, even a recording medium that cannot be printed due to the biting of the teeth of the toothed roller can be printed.
[0018]
In the contact avoidance device of the present invention, the recording medium is an optical disc and a tray for positioning and fixing the optical disc. As a result, it is possible to prevent the toothed roller from scratching the printing surface of the optical disc, thereby preventing deterioration (deterioration) of the information recording characteristics of the optical disc due to the destruction of the information recording layer of the optical disc and the laser light reflecting layer. Can do.
[0019]
The contact avoiding means used in the ink jet printer according to the present invention includes a discharge roller and a toothed roller that sandwich the recording medium and feed the recording medium from the printing side to the discharge side. In order to avoid contact between the discharge roller and the toothed roller, a contact avoiding means having a claw for separating the toothed roller from the discharge roller is provided. It is characterized by being mounted by holding the claw on the toothed roller.
[0020]
As a result, the toothed roller is separated from the discharge roller by at least a distance larger than the thickness of the recording medium, so that contact between the toothed roller and the printing surface of the recording medium can be reliably avoided.
[0021]
In the contact avoiding means mounting method according to the present invention, the recording medium is an optical disc and a tray for positioning and fixing the optical disc.
[0022]
As a result, it is possible to prevent the toothed roller from scratching the printing surface of the optical disk, and therefore it is possible to prevent deterioration (deterioration) of the information recording characteristics of the optical disk due to the destruction of the information recording layer and the laser light reflecting layer of the optical disk. it can.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0024]
FIG. 1 is a perspective view showing a configuration example of an ink jet printer according to an embodiment of the present invention, and FIG. 2 is a cross-sectional side view of the main part thereof. As shown in FIG. 1, the ink jet printer includes an ink jet print head 100, a paper gap switching means / pressing force adjusting means 200, and an automatic continuous paper feeding mechanism (auto sheet feeder) 110 (see FIG. 2). In addition, a head drive mechanism (not shown) is provided.
[0025]
Further, a paper discharge port 102 is provided on the front surface of the main body 101, and a manual paper supply port 103 (see FIG. 2) is provided on the rear surface of the main body 101. A tray 104 for the auto sheet feeder 110 is disposed above the sheet feeding port 103, and an operation lever 201 of the paper gap switching unit / pressing force adjusting unit 200 protrudes from the main body 101 beside the sheet feeding port 103. It is arranged.
[0026]
In addition, as shown in FIG. 2, a manual paper guide 111, a first paper guide 112 having a compression spring 112a, and a torsion coil spring 113a are arranged in the main body 101 in order from the paper feed port 103 side to the paper discharge port 102 side. A first paper guide 113 having a primary paper (feed) roller 114, a driven roller 115 attached to the second paper guide 113, a third paper guide 116, a secondary paper discharge roller 117 and a compression spring 118a. A toothed roller (discharge jagged) 118 and a second toothed roller (discharge jagged) 119 having a compression spring 119a are disposed.
[0027]
The ink jet print head 100 includes, for example, four color ink cartridges 105 (see FIG. 1) of yellow, magenta, cyan, and black, and is configured to be capable of full color printing. The ink ejection timing of the ink jet print head 100 and the scanning of the head driving mechanism are controlled by a dedicated controller board or the like built in the main body 101 so that highly accurate ink dot control, halftone processing, etc. are executed. It has become.
[0028]
The operation lever 201 slides stepwise in the direction of the arrow a shown in FIG. 1 along a linearly provided slit in the main body 101 so that the paper gap switching means / pressing force adjusting means 200 can be set. ing. Here, the paper gap switching means maintains the printing accuracy at a substantially constant high accuracy regardless of the thickness of the recording medium, that is, the distance between the printing surface and the nozzle opening surface of the ink jet print head 100, that is, The inkjet print head 100 is moved and adjusted so that the paper gap is always substantially constant.
[0029]
The pressing force adjusting means applies pressure to the driven roller 115 in order to sandwich the recording medium between the paper feed roller 114 and the driven roller 115 or to extract the recording medium from between the paper feed roller 114 and the driven roller 115. This is applied to press the driven roller 115 against the paper feed roller 114, or the pressure is released to separate (release) the driven roller 115 from the paper feed roller 114.
[0030]
In such a configuration, the recording medium fed to the tray 104 is automatically supplied by the auto sheet feeder 110, guided by the first paper guide 112, and sandwiched between the paper feed roller 114 and the driven roller 115. On the other hand, the recording medium manually fed to the paper feed port 103 is guided by the manual paper guide 111 and similarly sandwiched between the paper feed roller 114 and the driven roller 115.
[0031]
The recording medium is fed by the rotation of the paper feed roller 114 and printed by the ink jet print head 100 while being guided by the third paper guide 116. The recording medium is sandwiched between the paper discharge roller 117 and the paper discharge jagged 118, and is sent out by the rotation of the paper discharge roller 117. The recording medium is discharged from the paper discharge port 102 by the discharge jagged 119.
[0032]
Here, as the recording medium fed from the tray 104, plain paper, dedicated paper, recommended OHP sheet, glossy paper, glossy film, label sheet, government-made postcard, and the like can be used. As the recording medium fed manually, a thick medium such as an optical disk tray made of thick paper, extra thick paper, plastic, or the like, that is, a hard-to-fold recording medium can be used in addition to the above paper.
[0033]
By the way, as described in the related art, when the recording medium is an optical disk, there is a problem that the paper discharge serrated 118 bites into the printing surface of the optical disk and scratches it. Therefore, the ink jet printer according to the present embodiment includes a contact avoiding unit that avoids contact between the optical disc and the paper discharge serration 118.
[0034]
FIG. 3 is a perspective view showing an example of the contact avoiding means, and FIGS. 4A and 4B are a plan view and a side view thereof. As shown in FIGS. 3 and 4, the contact avoiding means 120 is formed in a strip shape having an L-shaped cross section made of plastic or a metal that can be easily elastically deformed, and the shaft 118 b shown in FIG. A function of preventing contact between the paper discharge gusset 118 and the printed surface of the printed optical disc is provided by mounting at a location where a plurality of paper discharge gussets 118 are fitted with a gap.
[0035]
A plurality (eight in this example) of substantially rectangular through holes 121 are arranged in parallel on the L-shaped plane portion of the contact avoiding means 120, and a plurality of (this) In the example, eight) claws 122 are provided, and a plurality of (five in this example) protrusions 123 are provided on the other end side of the L-shape. The through hole 121 has a function of escaping the paper discharge jaw 118 so that the contact avoidance device 120 does not interfere with the paper discharge jaw 118 when the contact avoidance device 120 is mounted. The claw 122 has a function of engaging with the paper discharge jaw 118 to separate the paper discharge jaw 118 from the paper discharge roller 117. The protrusion 123 has a function of locking the contact avoiding means 120 by being locked to the main body 101 when the contact avoiding means 120 is mounted.
[0036]
In such a configuration, a method of mounting the contact avoiding means 120 will be described with reference to FIG. Normally, as shown in FIG. 5A, the paper discharge serration 118 provided in the main body 101 is in contact with the paper discharge roller 117. From this state, as shown in FIG. 5B, for example, the optical disc tray T is inserted from the paper feed port 103 to separate the paper discharge jaw 118 from the paper discharge roller 117.
[0037]
Then, as shown in FIG. 5C, the contact avoiding means 120 is attached to further separate the paper discharge serrated 118 from the paper discharge roller 117. As a method of mounting the contact avoiding means 120, first, the contact avoiding means 120 is tilted so that the claw 122 side is downward, and the claw 122 is locked to the support arm 118c of the paper discharge jaw 118. Next, while maintaining this locked state, the contact avoiding means 120 is leveled and the protrusion 123 is locked to the main body 101.
[0038]
As a result, the contact avoiding means 120 can be fixed to the main body 101 in a state where the paper discharge jaw 118 is separated from the paper discharge roller 117. Therefore, as shown in FIG. 6, when printing the optical disc D positioned and fixed on the optical disc tray T, the print surface of the optical disc D does not come into contact with the paper discharge serrated 118, so that it is not damaged, and the information recording layer or the laser is not damaged. Deterioration (deterioration) of the information recording characteristics of the optical disc D due to the destruction of the light reflection layer can be prevented.
[0039]
FIG. 7 is a side view showing another example of the contact avoiding means. As shown in FIG. 7A, the contact avoiding means 130 includes a cam 131 and a lever 132 that are rotatably attached to the main body 101. The cam 131 of the contact avoiding means 130 is attached so as to come into contact with the end on the opposite side of the support arm 118c from the end on the attachment side of the paper discharge serpentine 118.
[0040]
Normally, as shown in FIG. 7A, the paper discharge serration 118 provided in the main body 101 is in contact with the paper discharge roller 117. From this state, as shown in FIG. 5B, the lever 132 is rotated in the direction of the arrow a, so that the support arm 118c is rotated in the direction of the arrow b, and the paper discharge jaw 118 is separated from the paper discharge roller 117. .
[0041]
Thus, as in FIG. 6, when printing the optical disk D positioned and fixed on the optical disk tray T, the printed surface of the optical disk D does not come into contact with the paper discharge serrated 118, so that it is not damaged, and the information recording layer or laser is not damaged. Deterioration (deterioration) of the information recording characteristics of the optical disc D due to the destruction of the light reflection layer can be prevented.
[0042]
Although the present invention has been described with reference to various embodiments, the present invention is not limited to the above embodiments, and may be applied to other embodiments within the scope of the invention described in the claims. Of course.
[0043]
For example, in the above-described embodiment, the ink jet printer provided with the attachment type contact avoiding unit 120 and the cam mechanism type contact avoiding unit 130 has been described, but the attachment type contact avoiding unit 120 and the cam mechanism are provided. The same effect can be obtained as an ink jet printer provided with both types of contact avoiding means 130.
[0044]
【The invention's effect】
As described above, according to the ink jet printer according to the present invention, the tooth biting trace of the toothed roller may be attached to the printing surface of the recording medium, and the tooth biting trace of the toothed roller is recorded on the recording medium. It is possible to cope with the case where the user does not want to attach the print surface. For this reason, it is possible to print even a recording medium that could not be printed due to the biting of the teeth of the toothed roller.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating a configuration example of an ink jet printer according to an embodiment of the present invention.
FIG. 2 is a cross-sectional side view of a main part of the ink jet printer shown in FIG.
FIG. 3 is a perspective view showing an example of contact avoiding means according to the embodiment of the present invention.
4 is a plan view and a side view of the contact avoiding means of FIG. 3. FIG.
5 is a side view for explaining a mounting method of the contact avoiding means of FIG. 3; FIG.
FIGS. 6A and 6B are a plan view and a side view showing a relationship with a recording medium after the contact avoiding means of FIG. 3 is mounted.
FIG. 7 is a perspective view showing another example of the contact avoiding means according to the embodiment of the present invention.
8A and 8B are a plan view and a side view for explaining a conventional problem.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 100 Inkjet print head 101 Main body 102 Paper discharge port 103 Paper feed port 104 Tray 105 Ink cartridge 110 Auto seed feeder 111 Manual paper guide 112 First paper guide 112a Compression spring 113 Second paper guide 113a Torsion coil spring 114 Main movement (paper feed) Roller 115 Followed roller 116 Third paper guide 117 Secondary movement (paper discharge) roller 118 First toothed roller (paper discharge jagged)
118a Compression spring 118b Shaft 118c Support arm 119 Second toothed roller (discharge jagged)
119a Compression spring 120 Contact avoidance means 121 Through hole 122 Claw 123 Projection 130 Contact avoidance means 131 Cam 132 Lever 200 Paper gap switching means / Pressure force adjustment means 201 Operation lever T Optical disc tray D Optical disc

Claims (7)

A printer head that prints information by ejecting ink droplets onto a recording medium;
A feed roller and a driven roller that sandwich the recording medium and feed it from the supply side to the printing side;
In an ink jet printer having a discharge roller and a toothed roller that sandwich the recording medium and feed it from the print side to the discharge side,
After the recording medium is sandwiched between the discharge roller and the toothed roller, the recording medium is mounted by being engaged with the toothed roller, and the toothed roller is separated from the discharge roller and the toothed roller is mounted. An ink jet printer comprising a contact avoiding means configured to be detachable, having a claw for avoiding contact between the recording medium and the recording medium . A printer head that prints information by ejecting ink droplets onto a recording medium;
A feed roller and a driven roller that sandwich the recording medium and feed it from the supply side to the printing side;
In an ink jet printer having a discharge roller and a toothed roller that sandwich the recording medium and feed it from the print side to the discharge side,
First contact avoiding means having a cam mechanism for separating the toothed roller from the discharge roller and contacting the discharge roller;
After the recording medium is sandwiched between the discharge roller and the toothed roller, the recording medium is mounted by being engaged with the toothed roller, and the toothed roller is separated from the discharge roller and the toothed roller is mounted. An ink jet printer comprising: a second contact avoiding means configured to be detachable and having a claw for avoiding contact with the recording medium . The recording medium is an ink jet printer according to any one of claims 1-2, characterized in that the tray for positioning and fixing the optical disk and the optical disk. Of the discharge roller and the toothed roller that sandwich the recording medium used in the ink jet printer and send it from the printing side to the discharge side, a contact avoidance device that avoids contact between the toothed roller and the recording medium,
The recording medium is configured to be detachable from the printer body, and the recording medium is sandwiched between the discharge roller and the toothed roller, and then mounted by being locked to the toothed roller, and the toothed roller is discharged. A contact avoidance device comprising a claw spaced apart from a roller to avoid contact between the toothed roller and the recording medium. The contact avoidance device according to claim 4, wherein the recording medium is an optical disc and a tray for positioning and fixing the optical disc. In order to avoid contact between the toothed roller and the recording medium among the discharge roller and the toothed roller that sandwich the recording medium used in the ink jet printer and feed it from the printing side to the discharge side, the toothed roller is A method of mounting contact avoiding means having a claw that is spaced apart from the discharge roller,
A method of mounting contact avoiding means, wherein the recording medium is mounted by sandwiching the recording medium between the discharge roller and the toothed roller and engaging the claw with the toothed roller. The method for mounting contact avoidance means according to claim 6 , wherein the recording medium is an optical disk and a tray for positioning and fixing the optical disk.

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