JPH11192694A - Ink jet printer - Google Patents

Ink jet printer

Info

Publication number
JPH11192694A
JPH11192694A JP9369139A JP36913997A JPH11192694A JP H11192694 A JPH11192694 A JP H11192694A JP 9369139 A JP9369139 A JP 9369139A JP 36913997 A JP36913997 A JP 36913997A JP H11192694 A JPH11192694 A JP H11192694A
Authority
JP
Japan
Prior art keywords
endless belt
roller
ink
printing apparatus
wiping roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9369139A
Other languages
Japanese (ja)
Inventor
Hitoshi Katsuyama
均 勝山
Original Assignee
Canon Inc
キヤノン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc, キヤノン株式会社 filed Critical Canon Inc
Priority to JP9369139A priority Critical patent/JPH11192694A/en
Publication of JPH11192694A publication Critical patent/JPH11192694A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide an ink jet printer that comprises a wiping roller for readily absorbing residual water on an endless belt and not attaching dust to the endless belt, and dispenses with periodic replacing of the wiping roller. SOLUTION: This ink jet printer comprises a conveying section having an endless belt 9 for supporting and conveying a printing medium and a driving means for driving the endless belt 9, a printing section for performing printing on the printing medium conveyed by the endless belt 9, a collecting section for separating and collecting the printed printing medium which is conveyed from the printing section by the endless belt 9 and a cleaning section C for cleaning the endless belt 9 from which the printing medium is removed at the collecting section. The cleaning section C comprises a wiping roller 36 of which at least the circumferential face is made of a high polymer porous material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus for outputting input image information to a print medium, and more particularly, to an ink jet printing apparatus for printing by discharging ink onto a cloth or the like.

[0002] The present invention also relates to paper, yarn, fiber, fabric, leather,
The present invention is applicable to an apparatus for recording on a print medium such as metal, plastic, glass, wood, and ceramics, and an industrial recording apparatus combined with various processing apparatuses.

[0003] In the present invention, "print" and "recording" mean not only giving an image having a meaning such as a character or a figure to a recording medium, but also an image having no meaning such as a pattern. Is also given.

[0004]

2. Description of the Related Art By giving energy such as heat to ink, a state change accompanied by a steep volume change (formation of bubbles) is caused in the ink, and the ink is ejected from an ejection port by an action force based on this state change. An ink jet recording method in which an image is formed by attaching the ink onto a recording medium, that is, a so-called bubble jet recording method, is conventionally known. As disclosed in U.S. Pat. No. 4,723,129 and the like, a recording apparatus using the bubble jet recording method includes a discharge port for discharging ink, and an ink flow communicating with the discharge port. A passage and an electrothermal converter as an energy generating means for discharging ink arranged in the ink flow path are generally arranged.

According to such a recording method, a high-quality image can be recorded at high speed and with low noise, and in a head performing this recording method, ejection ports for ejecting ink are arranged at a high density. Therefore, it has many advantages that a high-resolution recorded image and a color image can be easily obtained with a small device. For this reason, this bubble jet recording method has recently been used in many office devices such as printers, copiers, and facsimile machines, and has been used in industrial systems such as textile printing devices.

[0006] In an ink jet printing apparatus that performs printing by applying ink to a cloth or the like from an ink jet head, the cloth is conveyed while being adhesively fixed to an endless belt. Further, ink is applied from the inkjet head to the cloth transported to a predetermined position and positioned. However, when the ink is applied to the end of the cloth, the ink also adheres to the exposed surface of the endless belt adjacent to the end. In addition, when ink is applied to a thin cloth, the ink passes through the cloth, and the surface (endless belt surface) that is in contact with the endless belt on the back side of the surface (print surface) to which the ink is applied is also contaminated with the ink. Also,
If dust, fluff, fibers, and the like adhering to the fabric adhere to and accumulate on the endless belt, the adhesiveness of the fabric to the endless belt deteriorates.

For this reason, after the fabric is peeled off from the endless belt, ink stains, dust and fluff from the fabric are removed with a cleaning brush, water is removed with a mangle roller, and residual moisture on the endless belt surface is wiped with a wiping roller. It keeps the endless belt clean and restores the adhesiveness of the endless belt.

Conventionally, a core material made of a metal material and a cloth or the like wound around the core material of the wiping roller have been used.

FIG. 5 shows an example of a conventional example. This figure is a cross-sectional view along the center line (VI-VI 'line in the figure) of the conventional wiping roller. A cloth 51 is wound around the outer peripheral surface of the wiping roller core 50.

[0010]

However, in the above-mentioned conventional example, since the wiping roller is simply wound with a cloth,
Not only does the water absorb poorly, but the residual water remaining in the endless belt due to the small amount of absorption also reduces the adhesiveness of the fabric to the endless belt, so the wiping roller containing water must be replaced regularly. There is a problem that cannot be solved. In addition, since the outer peripheral portion of the wiping roller is made of cloth, there is another problem to be solved that fiber dust and fluff of the wiping roller adhere to the cleaned endless belt.

Therefore, the present invention solves the above problems,
Equipped with a wiping roller that makes it easier to absorb the residual moisture of the endless belt and does not cause excess dust and fluff to adhere to the endless belt, and a means to squeeze the wiping roller that contains moisture, and replace the wiping roller periodically. It is an object of the present invention to provide an ink-jet printing apparatus that does not need to be performed.

[0012]

In order to solve the above problems, an ink jet printing apparatus according to the present invention comprises:
An inkjet printing apparatus that performs printing by ejecting ink from an inkjet head to a print medium using an inkjet head, comprising: an endless belt that supports and transports the print medium; and a driving unit that drives the endless belt. A transport unit, a print unit that performs printing by the inkjet head on a print medium that is transported by the endless belt, and a collection unit that collects printed print media that is transported from the print unit by the endless belt away from the endless belt. And a cleaning unit for cleaning the endless belt from which the print medium has been removed in the collection unit, and the cleaning unit further includes a wiping roller having at least a peripheral surface made of a polymer porous body. .

Preferably, the cleaning section further includes a brush for cleaning the endless belt, and a mangle roller for removing water droplets, and the wiping roller removes water remaining when water droplets are removed by the mangle roller. I do.

Preferably, the apparatus further comprises a squeezing roller pressed against the wiping roller.

[0015] Preferably, the collection unit comprises a means for peeling and winding the print medium from the endless belt.

Preferably, the ink-jet head is an electro-thermal converter for generating a state change accompanied by a steep volume change in the ink by a heating element which generates heat by receiving an electric signal as an energy generating means for discharging the ink. With body.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of an ink jet printing apparatus according to the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view showing a schematic configuration of an ink jet printing apparatus according to the present invention.

Here, reference numeral 1 denotes a fabric as a print medium, and the fabric 1 is unwound in accordance with the rotation of the unwinding roller 2 of the unwinding section B, and includes a roller 3a, dust removing rollers 3b and 3c, wrinkles. After being transported in a substantially horizontal direction by a transport unit A provided at a portion facing the recording means 4 via a take-up roller 3d and intermediate rollers 3e and 3f, a take-up roller is provided via intermediate rollers 3g and 3h. 5 is wound up.

The transport section A includes a drive roller 7 which is connected to a servomotor 6 and can be driven and rotated, and a rotatable driven roller 8 which is rotatable.
Between the endless belt 9 and the driving roller 7
By driving and rotating the endless belt 9, FIG.
Is rotated in the counterclockwise direction to transport the cloth 1. An adhesive layer is formed on the surface of the endless belt 9. The cloth 1 unwound from the unwinding roller 2 is pressed against and adhered to the adhesive layer of the endless belt 9 by the attaching roller 14, and is conveyed without floating from the endless belt 9.

Incidentally, the endless belt 9 is provided with platen rollers 10a, 10a in a predetermined range facing the recording means 4.
b, and the belt 9 at that portion is provided with an appropriate tension so as to convey the cloth 1 in the horizontal direction.

The recording means 4 employs an ink jet recording method for recording by discharging ink from a recording head.

The recording means 4 is provided so that the carriage 4a can move in a direction perpendicular to the plane of FIG.
During this movement, printing is performed by the two inkjet heads 4b attached to the carriage 4a.

The printing material 4 is applied to the cloth 1 conveyed in such a state that the flatness is ensured by the recording means 4 in the area between the platen rollers 10a and 10b, and the conveyance belt 9 Alternatively, the film is peeled off from the adhesive layer and wound up by the winding roller 5, and a drying process is performed by the drying heater 12 on the way. The drying heater 12 is particularly effective when a liquid is used as a printing agent. The drying heater 12 may be of any suitable type, such as a type that blows warm air onto the cloth 1 and a type that irradiates infrared rays. An HS station 11 for correcting uneven density of the inkjet head 4b is provided at a position where the recording unit 4 can slide.

In the above configuration, the unwind roller 2, the take-up roller 5, the drive roller 7, the driven roller 8, and the like are supported by a stand 15 integrated with a frame welding structure, which is the structure of the printing apparatus main body. . At a plurality of predetermined locations of the gantry 15, level pads 16 that enable the apparatus to be adjusted horizontally and vertically with respect to the installation floor are attached.

The recording means 4 is provided so as to be movable in the horizontal direction, so that the operability of maintenance work such as belt replacement can be improved.

The unwinding roller 2 is tensioned by a clutch or the like (not shown) in a direction opposite to the unwinding direction. Thereby, wrinkles are extended by the wrinkle removing roller 3d without sagging of the fabric 1.

The take-up roller 5 is tensioned by a clutch or the like (not shown) in the take-up direction. As a result, when the tension is weakened by the belt 9 being fed, the fabric 1 is peeled off from the belt, and the fabric 1 is wound up by the winding roller 5.

After the fabric 1 has been peeled off, the belt 9 turns downward and passes through the cleaning section C. FIG. 2 shows a specific configuration of the cleaning unit C.

In the cleaning section C, the ink adhered to the belt surface, dusts and fluffs adhered to the adhesive layer are cleaned by the cleaning brush 31. A washing nozzle 32 is provided between the washing brush 31 and the belt 9, and washing is performed while supplying water. The cleaning brush 31 can be moved up and down by a cylinder 34 together with a water receiving tray 33. The water receiving tray 33 is configured to store water until the lower portion of the cleaning brush 31 is immersed in water. Thereby, fiber waste, dust, and fluff adhering to the cleaning brush 31 are washed off.

Water droplets adhere to the surface of the belt 9 washed with the washing brush 31. The water droplets are removed by the lower platen roller 10 c and the mangle roller 35 sandwiching the belt 9 with the pressing force of the spring 40 and pressing the belt 9 against each other. As a result, large water droplets are removed, but residual water remains on the surface of the belt 9. This is removed by the wiping roller 36.

The wiping roller 36 is made of a porous material made of a polymer material such as urethane, and has fine pores. Thereby, not only is it excellent in water absorbency, but it also has flexibility. Therefore, residual moisture can be wiped off without attaching extra dust and fluff on the surface of the belt 9.

However, when the residual moisture is continuously absorbed, the saturated water retention is reached eventually, and the residual moisture is not absorbed. The squeezing roller 37 restores the water absorption of the wiping roller 36 by squeezing out the moisture absorbed by the wiping roller 36.

FIG. 3 shows the positional relationship between the wiping roller 36 and the squeezing roller 37.

The squeezing roller 37 is made of a metal material.
It is attached so as to be in pressure contact with the wiping roller 36. The mounting pitch P is set at a pitch smaller than the sum of the radius R1 of the wiping roller 36 and the radius R2 of the squeezing roller 37. That is, the squeezing roller 37 made of a metal material is used as the flexible wiping roller 3.
It is attached so as to cut into 6. The wiping roller 36 itself has no drive source, but since the surface of the belt 9 is sticky, the wiping roller 36 rotates as the belt 9 moves. The squeezing roller 37 does not have a drive source, but is attached to the wiping roller 36 by pressing, so that when the wiping roller 36 rotates, the squeezing roller 37 also rotates. Although the surface of the wiping roller 36 absorbs moisture, the surface of the wiping roller 36 is pressed by the squeezing roller 37 attached by pressing, so that the water on the surface of the wiping roller 36 is squeezed out.

FIGS. 4A and 4B show the mounting of the wiping roller 36 and the squeezing roller 37. FIG.
(B) is a front view. The wiping roller 36 is rotatably supported by a bearing 43 attached to a plate 42. The aperture roller 37 is rotatably supported by a bearing 46 fixed to a bearing holder 45 by a retaining ring 47. The plate 42 has an elongated hole so that the bearing holder 45 can slide. When the squeezing roller 37 is pressed against the wiping roller 36, the bearing screw 45 is moved toward the wiping roller 36 by the set screw 48, whereby the squeezing roller 37 is pressed against the wiping roller 36.

A pair of components such as the plate 42 is provided at both ends of each shaft of the wiping roller 36 and the squeezing roller 37. The plate 42 is pushed up by the lower platen roller 10 d by the compression coil spring 41, and the wiping roller 36 is pressed against the belt 9 so as to sandwich the belt 9. As a result, even the slight residual moisture adhering to the surface of the belt 9 can be wiped off.

Therefore, the ink jet printing apparatus of the present embodiment is provided with a wiping roller for removing residual moisture, and since the wiping roller is made of a porous body made of a polymer material, extra dust or dirt is formed on the endless belt. The residual moisture of the endless belt can be absorbed without sticking. Further, since the squeezing roller is rotatably provided so as to be in pressure contact with the wiping roller, it is not necessary to periodically replace the wiping roller.

[0039]

As described above, since the ink jet printing apparatus according to the present invention is constructed as described above, the endless belt can always be kept clean and the adhesive strength of the adhesive layer on the surface of the endless belt can be maintained. This eliminates the need for maintenance for replacing the wiping roller.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view illustrating a schematic configuration of an ink jet printing apparatus according to the present invention.

FIG. 2 is a schematic cross-sectional view illustrating a configuration of a cleaning unit of the inkjet printing apparatus according to the present invention.

FIG. 3 is a schematic sectional view showing a positional relationship between a wiping roller and a squeezing roller applied to the ink jet printing apparatus according to the present invention.

FIGS. 4A and 4B show the mounting of the wiping roller and the squeezing roller applied to the ink jet printing apparatus according to the present invention, wherein FIG. 4A is a side view and FIG.

FIG. 5 is a schematic cross-sectional view illustrating an example of a wiping roller applied to a conventional inkjet printing apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 cloth 2 unwind roller 3 roller 4 recording means 4a carriage 4b inkjet head 5 take-up roller 6 drive motor 7 drive-side transfer roller 8 driven-side transfer roller 9 transfer belt 10a, 10b upper platen roller 10c, 10d lower platen roller 11HS Station 12 Drying heater 13 Brake 14 Sticking roller 15 Frame 16 Level pad 17 Controller 31 Rinse brush 32 Rinse nozzle 33 Water tray 34 Cylinder 35 Mangle roller 36 Wiping roller 37 Squeezing roller 38 Water tray 39 Cylinder 40 Compression coil spring 41 Compression coil spring 42 Plate 43 Bearing 44 Bearing holder 45 Bearing holder 46 Bearing 47 Retaining ring 48 Push screw 50 Wiping roller core 51 Cloth

Claims (5)

[Claims]
1. An ink jet printing apparatus for performing printing by using an ink jet head and ejecting ink from the ink jet head to a print medium, wherein the endless belt for supporting and transporting the print medium and the endless belt are driven. A transport unit including a driving unit, a print unit that performs printing by the inkjet head on the print medium that is transported by the endless belt, and a printed portion that is transported from the print unit by the endless belt. A collection unit that separates and collects the print medium from the endless belt; and a cleaning unit that cleans the endless belt from which the print medium has been removed in the collection unit. Equipped with a wiping roller composed of a molecular porous body Ink-jet printing apparatus according to claim.
2. The cleaning section further includes a brush for cleaning the endless belt, and a mangle roller for removing water droplets, and the wiping roller remains when water droplets are removed by the mangle roller. The ink-jet printing apparatus according to claim 1, wherein the water is removed.
3. The ink jet printing apparatus according to claim 1, further comprising a squeezing roller pressed against the wiping roller.
4. The ink jet printing apparatus according to claim 1, wherein the collection unit comprises a unit that separates and winds the print medium from the endless belt.
5. The ink-jet head, as an energy generating means for discharging ink, an electrothermal conversion in which a heating element that generates heat by receiving an electric signal causes a state change accompanied by a steep volume change in the ink. The inkjet printing apparatus according to claim 1, further comprising a body.
JP9369139A 1997-12-29 1997-12-29 Ink jet printer Pending JPH11192694A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9369139A JPH11192694A (en) 1997-12-29 1997-12-29 Ink jet printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9369139A JPH11192694A (en) 1997-12-29 1997-12-29 Ink jet printer

Publications (1)

Publication Number Publication Date
JPH11192694A true JPH11192694A (en) 1999-07-21

Family

ID=18493664

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9369139A Pending JPH11192694A (en) 1997-12-29 1997-12-29 Ink jet printer

Country Status (1)

Country Link
JP (1) JPH11192694A (en)

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EP1160090A1 (en) * 2000-05-30 2001-12-05 Hewlett-Packard Company Solvent dispensing applicator for transport belt cleaner and method of use
US6511152B2 (en) * 2000-03-30 2003-01-28 Seiren Co., Ltd. Inkjet printer with cleaning means
EP1560080A1 (en) * 2004-01-29 2005-08-03 Konica Minolta Holdings, Inc. Inkjet recording apparatus
EP1559568A2 (en) 2004-01-29 2005-08-03 Konica Minolta Holdings, Inc. Image recording apparatus
JP2006224583A (en) * 2005-02-21 2006-08-31 Konica Minolta Holdings Inc Adhesion recovering method for transfer member, transfer apparatus, and image recording apparatus
JP2007504970A (en) * 2003-09-08 2007-03-08 タエイル システムズ カンパニー リミテッド Multi-function digital printer
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US7287849B2 (en) 2003-08-06 2007-10-30 Ricoh Company, Ltd. Image forming apparatus, recording liquid, conveyor belt, recording liquid cartridge
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US6945383B2 (en) 2000-05-30 2005-09-20 Hewlett-Packard Development Company, L.P. Dispensing applicator and method of use
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DE102014225507A1 (en) 2014-12-11 2016-06-16 Heidelberger Druckmaschinen Ag inkjet
EP3042780A1 (en) * 2015-01-09 2016-07-13 Seiko Epson Corporation Recording device
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CN107614404A (en) * 2015-06-22 2018-01-19 精工爱普生株式会社 The clean method of the conveyer belt of liquid injection apparatus and liquid injection apparatus
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