JP2001219622A - Printer and printer head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent quality deterioration of a printed image due to dusts, or the like adhered on a paper in a printer for printing by ejecting or vaporizing an ink. SOLUTION: A dust collecting member 26 is disposed across the moving direction of a paper 3 on the paper entrance side of a head 8A for eliminating the dusts, or the like adhered on the paper 3 by the dust collecting member 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer and a printer head, and can be applied to, for example, a printer for printing by discharging or vaporizing ink. According to the present invention, a dust collecting member is disposed on a paper entering side of a head so as to cross a traveling direction of a sheet, and dust or the like attached to the sheet is removed by the dust collecting member. The quality of the result is prevented from deteriorating.

[0002]

2. Description of the Related Art Conventionally, in a printer, a desired image or the like can be printed by a fixed head or a movable head. That is, FIG. 14 is a perspective view showing the printer. In the printer 1, for example, a sheet 3 is stored in a predetermined cartridge 2, and the cartridge 2 is loaded in a sheet inlet. The printer 1 pulls out the paper 3 from the cartridge 2 by a predetermined paper feeding mechanism, prints the paper 3 by a built-in printing mechanism, and discharges the paper 3 from a discharge port 1A disposed above the cartridge 2, for example.

FIG. 15 is a plan view showing the internal configuration of a printer according to the configuration of a fixed head. FIG. 16 is a cross-sectional view of the printer 1 taken along line AA.

The printer 1 nips a sheet 3 supplied from a cartridge 2 between a feed roller 4 and a press roller 5, and drives the feed roller 4 by a motor (not shown), thereby forming a capstan roller 6 and a press roller 7. The paper 3 is conveyed toward the side.

[0005] Capstan roller 6, holding roller 7
Nips the sheet 3 conveyed by the feed roller 4 and the press roller 5 and conveys the sheet 3 by driving the capstan roller 6 by a motor (not shown). The capstan roller 6 and the paper feed roller 4 are set at a paper feeding speed so that the paper 3 does not slack between the capstan roller 6 and the paper feed roller 4.

In the printer 1, a head 8A is disposed between the press rollers 5 and 7, and the paper 3 is printed by the head 8A. That is, in the printer 1, the feeding of the sheet 3 is detected by the optical sensor 10 disposed on the head 8 </ b> A side of the sheet feeding roller 4. Head 8
A is held between the pressing rollers 5 and 7 so as to face the flat plate-shaped table 11 with the sheet 3 interposed therebetween.

The head 8A is pressed toward the table 11 at a predetermined timing when the paper 3 is detected to be fed.
The head 8A thereby holds the sheet 3 together with the table 11. Here, the head 8 </ b> A is configured to be pressed toward the table 11 in this manner, and to position a portion related to printing with respect to the sheet 3. Thus, in the printer 1, a desired image or the like can be printed on the paper 3 by driving the head 8A. In the printer 1, the rollers 4 to 7, the table 11, and the like are integrated to constitute a printing mechanism.

FIG. 17 is a plan view (FIG. 17 (B)) and a side view (FIG. 17 (A)) showing the head 8A viewed from the paper 3 side which is the ink ejection side. The head 8 </ b> A is formed in a rod shape having a length longer than the printing width on the paper 3, and is arranged so as to cross the paper feeding direction.

The head 8A is formed on a fixed base 8AA, which is a plate-like member, and is fixed to the printing mechanism via the fixed base 8AA. The head 8A is provided with the fixed base 8
The substrate 8AB and the head unit 8AC are arranged on the AA. Here, the head portion 8AC is a portion that ejects ink toward the paper 3 in response to a drive signal supplied via the substrate 8AB, and is supplied with ink via a predetermined ink supply member 8AD. For this reason, the head portion 8AC is formed by repeating in the longitudinal direction the ink discharge portions 8AE, each of which is a meniscus for discharging ink toward the sheet 3, as shown in a partially enlarged manner by the reference numeral B.

Here, the ink discharge section 8AE is formed by processing the substrate 8AF in the same step as the semiconductor forming step, and an ink reservoir 8AG for holding ink is formed in the substrate 8AF.
Created by the wall surface. Further, the ink ejection unit 8AE
Is formed by etching the substrate 8AF and leaving fine prisms 8AH at a fine pitch in the ink reservoir 8AG. The ink ejection section 8AE is provided with these prisms 8AH
Thus, a capillary structure exhibiting a capillary phenomenon is formed, and the ink supplied from the ink supply member 8AD is guided to the ink reservoir 8AG, and at the same time, leakage of the ink is prevented.

As shown in FIG. 18 by taking a cross section along the line C--C, in the ink discharge portion 8AE, a heater 8AI is disposed substantially at the center of the ink reservoir 8AG, under the prism 8AH. The ink ejection unit 8AE locally heats the ink held almost immediately above the heater 8AI by intermittently driving the heater 8AI by a drive signal supplied via the substrate 8AB. Further, the ink is partially vaporized by this local heating, and the ink is ejected toward the paper 3 by the pressure generated at this time.

As a result, in the head 8A of this type, the liquid surface is exposed at the ink ejection portion 8AE,
In FIG. 18, as indicated by reference numeral 8AJ, ink is ejected from the exposed liquid surface to attach the ink to the paper 3. By these, the head 8A
In order to improve the printing accuracy, it is necessary to accurately set the distance from the ink level of the ink discharge unit 8AE to the surface of the paper 3 in order to improve the printing accuracy. For this reason, in the head 8A, the paper 3 is abutted against the leading edge E of the ink discharge section 8AE, and the paper 3 is gradually moved away from the abutted portion in the paper feeding direction so as to be farther from the head 8A.
The whole is arranged to be inclined.

In this way, the plurality of ink ejection sections 8AE constitute an ink supply section for supplying ink to the paper 3.

FIG. 19 is a plan view and a side view showing a head according to another system in comparison with FIG. In the head 8B, like the head 8A,
It has a long rod shape and is arranged so as to cross the sheet feeding direction. The head 8B is formed with orifices repeated in the longitudinal direction, and discharges ink from ink discharge ports 8BA formed in each orifice. In a printer using the head 8B according to this configuration, the head 8B is held at a predetermined distance from the paper 3 so that the ink ejected from each of the ejection ports 8BA is attached to the paper 3 and a desired image is formed. Etc. are printed.

[0015]

However, it is impossible to completely prevent dust and the like from adhering to the surface of the paper 3. In a conventional printer, there is a problem that the quality of a printing result is deteriorated due to dust or the like attached to the paper.

That is, in the above-described head 8A,
As shown in FIG. 18, the ink ejection unit 8 with which the paper 3 contacts
In the corner E of the AE, the dust and the like adhering to the sheet 3 accumulate. The dust and the like accumulated in the corner E move together with the sheet 3 and move to the ink liquid side along with the sheet 3 by the paper feed. At the moment when the dust and the like cross the corner E in the head 8A, the dust and the like move from the ink liquid level. The distance to the sheet 3 temporarily changes. When the distance from the portion where ink is ejected to the sheet 3 temporarily changes in this way, printing unevenness occurs at this portion, and the quality of the printing result deteriorates accordingly.

In the head 8A, the ink liquid level is
Is exposed to the side of the ink, the dust and the like that have moved to the ink liquid side beyond the corner E as described above
In some cases, the AE adheres to the AE. In this case, it is difficult to perform partial printing at the adhered portion, and the quality of the printing result is deteriorated accordingly.

In some cases, ink adheres to dust or the like moving with the paper 3, and in this case, the dust or the like attached to the paper 3 peels off after printing, and a portion where no printing is performed occurs locally. However, this also degrades the quality of the print result.

On the other hand, in a printer using the head 8B (FIG. 19) having a structure in which the ink liquid level is not exposed, the ink adheres to dust or the like moving with the paper 3, and after printing, the dust adheres. Etc. come off from paper 3
A portion where no printing is performed occurs locally, and the quality of the printing result deteriorates.

The present invention has been made in consideration of the above points, and has as its object to propose a printer and a printer head capable of preventing the quality of a print result from being deteriorated due to dust or the like adhering to a sheet.

[0021]

According to a first aspect of the present invention, there is provided a dust collecting member which is disposed on a paper entering side of a head and presses a side surface of the paper. The dust collecting member removes dust and the like adhering to the sheet conveyed by the conveying mechanism.

According to the second aspect of the present invention, the present invention is applied to a printer head, is fixed to a portion which is not movable at the time of printing, and is disposed on the paper entering side from the ink supply unit, and presses the ink supply unit of the paper. With a dust collection member,
The dust collecting member removes dust and the like adhering to the sheet.

According to the first aspect of the present invention, there is provided a dust collecting member which is disposed on the head entry side of the paper and presses the side of the head of the paper, and adheres to the paper conveyed by the conveying mechanism by the dust collecting member. By removing the dust and the like, it is possible to prevent the dust and the like from entering the head side, thereby preventing the quality of the print result from being deteriorated due to the dust and the like adhering to the sheet.

According to the second aspect of the present invention, there is provided a dust collecting member fixed to a portion which is not movable at the time of printing, arranged on the paper entry side from the ink supply portion, and pressing the ink supply portion of the paper. By removing dust and the like adhering to the paper by the dust collecting member, it is possible to prevent dust and the like from entering the ink supply unit side, thereby preventing quality deterioration of a printing result due to the dust and the like adhering to the paper. be able to.

[0025]

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

(1) First Embodiment (1-1) Configuration of First Embodiment FIG. 2 is a plan view showing a printer according to a first embodiment of the present invention in comparison with FIG. FIG. 1 is a diagram of FIG.
FIG. 3 is a cross-sectional view of the printer of FIG. 2 cut along line DD in comparison with FIG. In the printer 21, the same components as those of the above-described printer 1 are denoted by the corresponding reference numerals, and redundant description will be omitted.

This printer 21 has a head holder 23
The head 8A is brought into contact with the paper 3 by the rotation of. Here, the head holder 23 is rotatably held by a rotation shaft 25 on the paper entry side of the paper feed roller 5, and is held so as to extend substantially parallel to the paper 3. The head holder 23 is
The head 8 </ b> A is arranged at a portion extending from the roller 7 side through a predetermined member, which is made of an elastic metal plate material. Thereby, in the printer 21, the optical sensor 1
0, the feed of the paper 3 is detected, the head 8A is pressed against the table 11 at a predetermined timing,
A is positioned with respect to the sheet 3.

Further, the head holder 23 holds a blade 26 on the paper entry side of the head 8A. That is, the head holder 23 is provided with an elastic metal plate 27 via a predetermined member on the rotation shaft 25 side of the head 8A.
6 is retained. Accordingly, the head holder 23 presses the blade 26 against the sheet 3 and holds the sheet near the head 8A on the sheet entry side of the head 8A during printing.

Here, the blade 26 is made of a slippery resin material so that even if the blade 26 is pressed against the paper 3, the conveyance of the paper 3 is not hindered. Blade 2
Reference numeral 6 denotes a rod shape having a rectangular section in cross section which is longer than the width of the sheet 3 and extends substantially parallel to the head 8A. Is made to abut.

Further, the blade 26 is configured to come into contact with the paper 3 at one of the corners having a rectangular cross section, so that the contact area between the blade 26 and the paper 3 is reduced. Transport is not hindered. Thus, the blade 26 scrapes dust and the like adhered to the sheet 3 from the sheet 3 immediately before the head 8A.

In the printer 21, when the cleaning operation mode is set and a predetermined cleaning paper is fed instead of the paper 3, the cleaning paper is conveyed by the printing mechanism while the driving of the head 8A is stopped. And discharged from the discharge port 1A (see FIG. 14). Here, the cleaning paper is a sheet material that adheres and removes dust and the like accumulated on the blade 26 and further prevents the attached dust and the like from easily falling off. In this embodiment, the surface of the cleaning paper is weakly adhered. A sheet material processed so as to have a property is applied. Specifically, a sheet material made of a resin material in which urethane is gelled and adhered to the surface is applied. Thereby, in the printer 21, the blade 26 scrapes dust and the like, and further removes the scraped dust and the like with a cleaning paper,
The printing quality is prevented from deteriorating.

Thus, the blade 26 is disposed on the side of the head 8A on which the paper 3 enters, and constitutes a dust collecting member for pressing the side of the head 3A of the paper 3A.

(1-2) Operation of the First Embodiment In the above configuration, the printer 21 (FIGS. 1 and 2) supplies the paper 3 held in the cartridge 2 (see FIG. 14) at a predetermined feed rate. The paper is supplied to the paper feed roller 4 and the press roller 5 by the paper mechanism, and is conveyed toward the capstan roller 6 and the press roller 7 by the paper feed roller 4 and the press roller 5. Further, the paper 3 is nipped by the capstan roller 6 and the press roller
It is transported toward A.

In the printer 21, the paper 3
When the sheet is fed by the optical sensor 10 when the sheet is conveyed, the head holder 23 rotates toward the sheet 3 at a predetermined timing, and the head 8A held by the head holder 23 moves the sheet 3A. Pressed to. As a result, in the printer 21 (afterglow in FIG. 18), the corner E abuts on the paper 3 in the ink ejection section 8AE of the head 8A,
The distance from the ink level of the ink ejection unit 8AE to the paper 3 is set and held at a predetermined distance.

In this state, in the printer 21, the head 8A is driven by a predetermined drive signal, and the ink is attached to the paper 3 conveyed by the capstan roller 6 and the pressing roller 7, whereby a desired image is formed on the paper 3. Etc. are printed. When printing is further completed, the head 8A moves away from the table 11 by the rotation of the head holder 23, and is held at a predetermined retracted position.

In the printer 21, when the head 8A is brought into contact with the paper 3 in this manner, the blade 26 disposed on the head holder 23 presses the paper 3 on the paper entry side of the head 8A. As a result, dust or the like adhering to the sheet 3 is scraped off by the blade 26 immediately before the head 8A. As a result, in the printer 21, it is possible to prevent dust and the like from entering the head 8A, and to prevent quality deterioration of a printing result caused by attaching ink to dust and the like moving with the paper 3. In addition, since it is possible to prevent this kind of dust or the like from adhering to the ink ejection unit 8AE, it is possible to prevent the quality of the print result from being deteriorated.

Further, since the blade 26 is disposed between the press roller 5 and the head 8A, dust and the like adhering to the paper 3 from the press roller 5 can be removed. Can be prevented.

In the printer 21, the blade 2
Since the blade 6 is made of a slippery resin material, even if the blade 26 is pressed against the paper 3 to scrape off dust and the like, the conveyance of the paper 3 can be prevented from being hindered. It is possible to prevent the quality of the print result from deteriorating due to the disturbance of the minute sheet feed.

Further, the blade 26 is formed in a rectangular shape in cross section, and is brought into contact with the paper 3 at this corner to reduce the contact area with the paper 3.
Can be prevented from deteriorating, and the quality of the printing result can be prevented from deteriorating due to the disturbance of paper feeding. Also, by contacting the sheet 3 with a vertex extending in a direction crossing the sheet feeding direction of the sheet 3,
Dust and the like adhering to the paper can be reliably removed.

Further, since the blade 26 is pressed against the sheet 3 via the elastic metal plate 27, the blade 26 appropriately contacts the sheet 3 in response to a change in the thickness of the sheet 3 and abrasion of the blade 26. Dust and the like can be scraped off. Further, the paper 3 can be prevented from being damaged.

In the printer 21, by transporting the cleaning paper, the dust and the like scraped off by the blade 26 in this manner adhere to the cleaning paper and are removed. As a result, in the printer 21, dust and the like accumulated on the blade 26 move to the head 8A side, and the
Of the ink ejection unit 8AE, such as dust, can be prevented, and the quality of the print result can be prevented from deteriorating.

(1-3) Effects of the First Embodiment According to the above configuration, the head 8A is positioned on the entry side of the paper 3
A blade 26 is disposed as a dust collecting member that contacts and presses the side surface of the head 8A of the sheet 3 and the blade 26 scrapes and removes dust and the like adhering to the sheet 3 to thereby remove dust and the like adhering to the sheet. It is possible to prevent quality deterioration of the printing result.

At this time, by arranging the blade between the roller on the paper feed side and the head, dust and the like adhered to the paper by the roller on the paper feed side can also be removed, and the printing result by the dust and the like can be removed. Quality can be prevented.

In addition, so as to cross the sheet feeding direction,
By forming the blade 26 with a bar-shaped member longer than the width of the paper, the printing result is obtained by removing the dust or the like adhering to the paper without leaking with a simple configuration in which the blade 26 is simply held integrally with the holding member of the head. Quality can be improved.

Further, the blade 26 is formed in a rectangular cross section and is disposed at an angle, and the blade 26 is brought into contact with the sheet by a vertex of a projecting portion on the paper side, which extends in a direction crossing the sheet feeding direction. By doing so, it is possible to effectively avoid abnormal paper feeding caused by pressing the blade 26, and it is possible to reliably remove dust and the like.

The blade 26 is held at the tip of a metal plate material 27 which is an elastic member.
6 is pressed against the paper to change the thickness of the paper 3,
In response to the wear of the blade 26 or the like, the dust can be scraped off by appropriately contacting the paper 3. Further, the paper 3 can be prevented from being damaged.

(2) Second Embodiment FIG. 3 is a sectional view showing a printer according to a second embodiment of the present invention in comparison with FIG. This printer 31
The configuration is the same as that of the printer 21 according to the first embodiment except that the cross-sectional shape of the blade 36, the pressing direction and the direction of the blade 36 are different. In the printer 31, the same components as those of the above-described printer 21 are denoted by the corresponding reference numerals, and the duplicate description will be omitted.

That is, the blade 36 is arranged so as to extend in a direction substantially perpendicular to the sheet of paper when viewed in cross section, and is pressed against the sheet 3 in this perpendicular direction. The blade 36 is formed such that the leading end on the paper side gradually narrows, and the leading end contacts the paper 3 almost by line contact. The blade 36 has a tip angle of 90
It is formed to have an angle smaller than the degree.

As shown in FIG. 3, the same effect as in the first embodiment can be obtained even if the blade 36 is pressed against the paper from the direction perpendicular to the paper surface and the tip of the blade 36 is formed at an acute angle. Can be.

(3) Third Embodiment FIG. 4 is a sectional view showing a printer according to a third embodiment of the present invention in comparison with FIG. This printer 41
Is the same as the printer 31 according to the second embodiment except that the cross-sectional shape of the blade 46 is different. In the printer 41, the same components as those of the printer 31 described above are denoted by the corresponding reference numerals,
Duplicate description is omitted.

That is, the blade 46 is arranged so as to extend in a direction substantially perpendicular to the paper surface when viewed in a cross section, and is pressed against the paper 3 in this perpendicular direction. The blade 46 is formed such that the leading end on the paper side gradually narrows, and the leading end contacts the paper 3 almost by line contact. The blade 46 has a tip angle of 90
The angle is formed to be larger than the degree.

As shown in FIG. 4, the same effect as in the first embodiment can be obtained even if the blade is pressed against the paper from the direction perpendicular to the paper surface and the tip of the blade is formed at an obtuse angle. .

(4) Fourth Embodiment FIG. 5 is a sectional view showing a printer according to a fourth embodiment of the present invention in comparison with FIG. This printer 51
Is the same as the printer 21 according to the first embodiment except that the cross-sectional shape of the blade 56 is different. In the printer 51, the same components as those of the printer 21 described above are denoted by the corresponding reference numerals,
Duplicate description is omitted.

That is, when viewed from the cross section, the blade 56 has a surface on the side of the sheet 3 formed in a stepped shape, so that a vertex protruding toward the sheet side and crossing the sheet 3 in the width direction is formed.
A plurality is formed.

As shown in FIG. 5, when the blade 56 is brought into contact with the sheet by a plurality of vertices, dust and the like adhering to the sheet can be more reliably removed.

(5) Fifth Embodiment FIG. 6 is a sectional view showing a printer according to a sixth embodiment of the present invention in comparison with FIG. This printer 61
In, the dust collecting member is constituted by the two blades 66A and 66B. Here, each blade 66A and 66
B are held by the head holder 23 similarly to the blade 26 described above in the first embodiment, and press the paper 3 by the corner.

As shown in FIG. 6, a plurality of blades 66
When the sheets A and 66B are brought into contact with the sheet, dust and the like adhering to the sheet can be more reliably removed.

(6) Sixth Embodiment FIG. 7 is a sectional view showing a printer according to a sixth embodiment of the present invention in comparison with FIG. This printer 71
In the above, the dust collecting member is formed of a nonwoven fabric instead of the blade. That is, in the printer 71, the metal plate 77 is held by the head holder 23, and this metal plate 7
7. The nonwoven fabric 76 is held. Here, in the nonwoven fabric 76, when the head 8 </ b> A is brought into contact with the paper 3, the leading end is bent in the paper feeding direction, whereby the paper 3 is pressed by the weight and elastic force of the bent nonwoven fabric 76. Dust and the like attached to the paper 3 are removed.

As shown in FIG. 7, the same effect as in the first embodiment can be obtained even if the dust collecting member is constituted by the nonwoven fabric 76.

(7) Seventh Embodiment FIG. 8 is a sectional view showing a printer according to a seventh embodiment of the present invention in comparison with FIG. This printer 81
In the above, the dust collecting member is constituted by the nonwoven fabric 86 instead of the blade. That is, in the printer 81, the nonwoven fabric 86 is attached to the outside of the rod-shaped metal member 85 formed in a U-shaped cross section, and the rod-shaped metal member 85 is held by the head holder 23. At this time, the printer 81 holds the rod-shaped metal member 85 on the head holder 23 such that the nonwoven fabric 86 is pressed against the paper 3 by a metal plate, a coil spring, or the like, which is an elastic member (not shown).

As shown in FIG. 8, the same effect as in the first embodiment can be obtained even if the dust collecting member is constituted by the nonwoven fabric 86 and pressed against the sheet by the elastic member.

(8) Eighth Embodiment FIG. 9 is a sectional view showing a head applied to a printer according to an eighth embodiment of the present invention. In this printer, a blade 26 is held by a head 8A. That is, the head 8A is on the side farther than the paper 3 and
A spacer 8C is arranged on the entry side, and a metal plate 8D as an elastic member is arranged on the spacer 8C. Further, the head 8A is provided with a blade 2 at the tip of the metal plate 8D.
6 are arranged, and the blade 2 is
6 is pressed against the paper 3.

As a result, the head 8A is provided with a dust collecting member, which is a part that is not movable at the time of printing, on the paper entering side from the ink supply unit that supplies ink to the paper 3, and adheres to the paper by the dust collecting member. Dust and the like are removed.

As shown in FIG. 9, the same effect as in the first embodiment can be obtained by disposing the blade integrally with the head. In addition, by integrating the head and the blade in this manner, the blade can be replaced together with the replacement of the head, thereby improving the maintainability.

(9) Ninth Embodiment FIG. 10 is a sectional view showing a head applied to a printer according to a ninth embodiment of the present invention in comparison with FIG. In this printer, the blade 26 is held on the head 8A via a cushion material 8E such as urethane foam instead of the spacer 8C and the metal plate material 8D, and the blade 26 is pressed against the paper 3 by the elastic force of the cushion material 8E. I do.

As shown in FIG. 10, if the blade is arranged integrally with the head via a cushion material, the same effect as in the eighth embodiment can be obtained with a simple configuration.

(10) Tenth Embodiment FIG. 11 is a plan view showing a printer according to a tenth embodiment of the present invention in comparison with FIG. In this printer 91, the blade 26
Are inclined, and dust and the like caught on the blade 26 are moved along the blade 26 by the force of feeding the paper.
Thus, in the printer 91, dust and the like accumulated on the blade 26 can be removed without cleaning with a cleaning paper.

According to the configuration shown in FIG. 11, by arranging the blade 26 at an angle to the width direction of the sheet 3,
Even without cleaning with a cleaning paper, dust and the like accumulated on the blade 26 can be removed, thereby simplifying maintenance work and obtaining the same effect as in the first embodiment.

(11) Other Embodiments In the above-described embodiment, the case where the cleaning member is formed by forming the blade and the nonwoven fabric with the length equal to or more than the width of the sheet 3 has been described. However, the present invention is not limited to this, and a plurality of cleaning members shorter in length in the width direction of the sheet 3 may be shifted in the sheet width direction and arranged. In this case,
By adopting a configuration similar to the configuration described above with reference to FIG. 11, by disposing a plurality of shifted cleaning members in a mountain shape when viewed from above, accumulated dust and the like can be distributed and removed on both sides of the sheet.

In the above-described embodiment, the case where the accumulated dust and the like are removed by cleaning with the cleaning paper or by moving the dust and the like caught on the blade 26 by the force of feeding the paper has been described. However, the present invention is not limited to this. For example, when the head is retracted after printing is completed, the blade may collide with a predetermined stopper, and dust and the like may be dropped and removed from the blade by the impact of the collision.

Further, in the above-described embodiment, the case where the blade is pressed against the sheet at the portion protruding toward the sheet when viewed in cross section has been described. However, the present invention is not limited to this. For example, as shown in FIG. In addition, the tip may be a flat surface, and furthermore, as shown in FIG. 13, a dust reservoir is formed as a tip bent toward the paper entry side.
Various cross-sectional shapes can be widely applied.

In the above-described embodiment, the case where the cleaning member is made of a resin material or a nonwoven fabric to remove dust and the like has been described. However, the present invention is not limited to this, and the blade is made of a metal material instead of the resin material. The present invention can be widely applied to the case where the cleaning member is made of synthetic leather or the like instead of the nonwoven fabric.

Further, in the above-described embodiment, a case has been described in which the printer is configured by using the head having the configuration in which the ink liquid surface is exposed. However, the present invention is not limited to this.
When the printer is configured with the head having the configuration described above with reference to FIG. 19, further, when the printer is configured with the head configured to be movable in units of a plurality of lines, the printer is configured to print using a latent image formed on paper. In various cases, the present invention can be widely applied to printers having various configurations.

[0074]

As described above, according to the present invention, a dust collecting member is disposed on the paper entering side of the head so as to cross the traveling direction of the paper, and dust or the like attached to the paper is removed by the dust collecting member. Accordingly, it is possible to prevent the quality of the print result from being deteriorated due to dust or the like attached to the sheet.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a printer according to a first embodiment of the invention.

FIG. 2 is a plan view of the printer of FIG.

FIG. 3 is a sectional view showing a printer according to a second embodiment of the invention.

FIG. 4 is a sectional view showing a printer according to a third embodiment of the present invention.

FIG. 5 is a sectional view showing a printer according to a fourth embodiment of the present invention.

FIG. 6 is a sectional view showing a printer according to a fifth embodiment of the present invention.

FIG. 7 is a sectional view showing a printer according to a sixth embodiment of the invention.

FIG. 8 is a sectional view showing a printer according to a seventh embodiment of the present invention.

FIG. 9 is a sectional view showing a head applied to a printer according to an eighth embodiment of the invention.

FIG. 10 is a sectional view showing a head applied to a printer according to a ninth embodiment of the present invention.

FIG. 11 is a plan view showing a printer according to a tenth embodiment of the present invention.

FIG. 12 is a sectional view showing a blade applied to a printer according to an eleventh embodiment of the present invention.

FIG. 13 is a sectional view showing a blade applied to a printer according to an eleventh embodiment of the present invention.

FIG. 14 is a perspective view showing a conventional printer.

FIG. 15 is a plan view of the printer of FIG.

FIG. 16 is a cross-sectional view of FIG. 14 cut along line AA.

FIG. 17 is a plan view and a side view showing the head of FIG. 15;

FIG. 18 is a cross-sectional view illustrating an ink discharge unit of the head of FIG. 15 in detail.

FIG. 19 is a plan view and a side view showing a head according to another example.

[Explanation of symbols]

1, 21, 31, 41, 51, 61, 71, 81, 91
… Printer, 3… Paper, 4-7… Rollers, 8
A, 8B: head, 11: table, 23: head holder, 26, 36, 46, 56, 66A, 66B
…… Blade, 27 …… Metal plate material, 76, 86 …… Non-woven fabric

Claims (13)

[Claims] A transport mechanism for transporting the paper; a head for applying ink to the paper transported by the transport mechanism; and a head disposed on a side of the head where the paper enters, and pressing the head side surface of the paper. A printer, comprising: a dust collecting member, wherein the dust collecting member removes dust or the like attached to a sheet conveyed by the conveyance mechanism. 2. The dust collecting member, wherein the transport mechanism includes a paper feed roller that supplies the paper to the head, and a discharge roller that discharges the paper that has passed through the head. The printer according to claim 1, wherein the printer is disposed between the roller on the paper feed side and the head. 3. The printer according to claim 1, wherein the dust collecting member is a rod-shaped member arranged so as to cross the sheet feeding direction of the sheet and longer than the width of the sheet. 4. The printer according to claim 1, wherein the dust collecting member is a plurality of rod-shaped members arranged so as to cross the sheet feeding direction of the sheet and longer than the width of the sheet. 5. The sheet collecting member according to claim 1, wherein the dust collecting member contacts the sheet at a vertex of a portion protruding toward the sheet and extending in a direction transverse to a sheet feeding direction of the sheet. 2. The printer according to 1. 6. The printer according to claim 5, wherein the dust collecting member is a rod-shaped member having a plurality of the vertexes. 7. The printer according to claim 1, wherein the dust collecting member is held by a predetermined elastic member, and is pressed by the elastic member to press the paper. 8. A printer head that supplies ink from a predetermined ink supply unit to a sheet and prints the sheet, is fixed to a part that is not movable at the time of printing, and is disposed on the paper entry side from the ink supply unit. A printer head, further comprising: a dust collecting member that presses the paper toward the ink supply unit, wherein the dust collecting member removes dust or the like attached to the paper. 9. The printer head according to claim 8, wherein the dust collecting member is a rod-shaped member that is longer than the width of the paper and is arranged to cross the paper feeding direction of the paper. 10. The printer head according to claim 8, wherein the dust collecting member is a plurality of rod-shaped members longer than the width of the sheet arranged so as to cross the sheet feeding direction of the sheet. 11. The paper collecting member according to claim 11, wherein said dust collecting member contacts said sheet at a vertex of a portion protruding toward said sheet and extending in a direction transverse to a sheet feeding direction of said sheet. 9. The printer head according to 8. 12. The printer head according to claim 11, wherein the dust collecting member is a rod-shaped member having a plurality of the vertices. 13. The printer head according to claim 8, wherein the dust collecting member is held by a predetermined elastic member, and is pressed by the elastic member to press the paper.