JPH082048A - Recording device - Google Patents

Abstract

PURPOSE:To make a space-saving recording device deal with smears securely by bending and guiding side ends of a material to be recorded ejected out of an ejection means in the state of retaining flatness for the sections except the side ends. CONSTITUTION:A smear component 503a is formed on a part of a rowel cover 503. One end 503b of the rowel cover 503 is made to face an ejection outlet 520 of a maternal 2 to be recorded, and the smear component 503a as a guide component is formed integrally at least on one end. The smear component 503a is formed as a columnar guide extending from the rowel cover 503 into a device to form a guide face 503c bending the side end of the material 2 to be recorded and guiding the same. An inclined guide face 503d is formed on an end of the rowel 502b side of the guide face 503c, and the side of the material 2 to be recorded fed in the state of retaining the flatness is bent smoothly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stain on a recording material, which has not been dried, in a recording material stacking portion after recording in a recording apparatus.

[0002]

2. Description of the Related Art In an ink jet recording apparatus, sheet-shaped recording materials such as paper ejected after printing are stacked on a stacker. At this time, if the ink on the printing surface of the previously recorded recording material has not been dried yet, the recording material is contaminated. (Hereafter referred to as smear.) On the other hand,
There is the following conventional example as a simple countermeasure example without using a large-scale means such as a heater.

FIG. 10 is a sectional view of an ink jet recording apparatus for explaining a conventional example, and FIG. 11 is a plan view with a part of a cover removed.

In FIG. 10, the hopper 101a or 101 of the automatic sheet feeder 100 which can be attached to and detached from the recording apparatus 1 is used.
The recording material 2 stacked on the sheet b is fed to the recording apparatus main body one by one from a designated hopper by driving a separation claw (not shown) and a feed roller 102a (102b).

Recording material 2 fed from an automatic paper feeder
Is applied to the contact point between the transport roller 3 and the registration roller 4 which is in pressure contact with the transport roller 3 to correct the skew, and then the transport roller 3 is driven and the paper pan 5 is transported to the platen 6 by the guide. Here, by the scanning in the paper surface direction of the carriage 10 on which the recording head 9 is mounted, which is guided by the guide shaft 7 and the guide rail 8, and the ink is ejected by a signal from the PCB to the recording head 9 via a flexible cable (not shown). An image is formed on the recording material.

Scanning of the carriage 10 and the conveying roller 3
An image is recorded in one page by feeding the recording material by. In this way, the recording material on which one page has been printed is conveyed by the discharge roller 11 and a spur-like rotating body (hereinafter referred to as a spur) 12 that presses the recording material against the discharge roller 11 and gives a conveying force. , And is loaded on the stacker 13. Here, the spur 12 has a very small contact area with a material having high water repellency that does not transfer to the undried ink on the printed surface after recording, or a recording material at the tip of a protrusion provided along the outer circumference. The print surface is not conspicuously contaminated.

The automatic paper feeder 100 has a tray 103 for manual paper feed and a manual paper feed passage 104. The tray 103 also serves as a paper discharge tray for stacking discharged recording materials.

Reference numeral 15 is a pin tractor for feeding continuous paper such as fanfold paper. The pin tractor engages with a transport hole formed at a side end portion of the fanfold paper and rotates a pin for transporting this. On the outer peripheral surface.

In this manner, the recording of the next page is started at the same time as the recording of the previous page is completed. Here, if the leading edge of the next page comes into contact with the previous page while the ink on the printing surface of the previous page is undried, the recording material is contaminated. In order to deal with such an obstacle, in the conventional example, as shown in FIG. 11, by arranging the outer peripheral portion of the spur 12 so as to be located slightly inside the outer periphery of the discharge roller 11, the recording material 2 can be made wider. The recording material 2 is made to have an unevenness in the direction, and the recording material at the discharge portion in FIG. 10 is changed from the recording material 2a to the recording material 2b. Smear measures are taken by the extension of. As another conventional example, there is an example in which the recording material 2 is U-shaped (reverse U-shaped) in the cross section in the width direction, but basically the same idea is used.

[0010]

However, the above-mentioned conventional example has the following problems.

Due to the characteristics of the recording material (especially remarkable for plain paper, which is most often used in general recording), unevenness in the width direction for making the waist of the recording material is printed on the upstream platen. The unevenness remains even on the surface, and the distance between the head and the recording material, which is particularly important in terms of printing quality of the inkjet recording device, becomes uneven.

When the distance between the head and the recording material is widened in order to avoid rubbing between the convex surface of the recording material and the head, the printing quality further deteriorates.

When the recording material 2 is U-shaped (reverse U-shaped) in the cross section in the width direction, the stacker portion must have a sufficiently large depth (especially a wide size such as A3 size). Increase in size.

In order to form a U-shape (inverted U-shape) corresponding to various sizes, it is necessary to operate a guide member for forming the U-shape according to the size. .

However, a reliable smear countermeasure is an absolute condition due to the increase in the number of nozzles due to the progress of the ink jet recording head manufacturing technology, the high frequency response due to the evolution of the ink jet recording technology, and the high speed processing of print data due to the low cost of the memory. ing.

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording apparatus which can solve the above-mentioned problems, that is, the deterioration of printing quality, and has a simple structure, which is space-saving and can surely cope with smear.

[0017]

In order to achieve such an object, the structure of the present invention has a recording means for recording on a recording material and a recording material on which recording has been carried out by the recording means. Discharging means, a mounting portion for mounting the recording material discharged by the discharging means, and at least one of the recording materials discharged by the discharging means in a flat state except for a side end portion. And a guide member that bends and guides the side end portion.

[0018]

EXAMPLES Example 1 Hereinafter, examples of the present invention will be described in detail with reference to the drawings. 1 and 2 show an embodiment of the present invention.

FIG. 1 is a sectional view, FIG. 2 is a partially enlarged view of a portion through which an end portion of a recording material passes, FIG. 3 is a plan view, and FIG. 4 is a front view. In each figure, the same components as those in FIG. 10 and FIG.

In FIGS. 1 and 2, 501a and 501b are provided.
Is a discharge roller, 502a, 502b, which is driven by a transport motor (not shown) to transport the recording material.
Is a spur that is configured to press the recording material against the discharge rollers 501a and 501b, respectively, to apply a conveying force and to prevent transfer of undried ink on the printing surface, and 503 is a spur 5
02a and 502b are supported, and spur 502a and
502b is a spur cover that has a spur spring (not shown) that urges the discharge rollers 501a and 501b in the direction of the discharge roller 501b, and is a spur cover that is a part of the exterior.
Positioning is performed by removably fitting the bearing portion 501c of 1b with a click feeling. The discharge rollers and spurs are 501a, 501b, and 502, respectively.
a and 502b are arranged in two steps in the feeding direction of the recording material to obtain a reliable discharging force, and the behavior of the recording material in the feeding direction on the downstream side is between the first step and the second step. It is configured to absorb at. Here, a part 503a of the spur cover 503 is a smear member, and is configured in the shape shown in FIG. 2 and, as shown in FIG. 1 and FIG.
02 and x, y, and z dimensions are controlled to appropriate dimensions.

One edge 503b of the spur cover 503
Faces the discharge outlet 520 of the recording material 2. A smear member 503a as a guide member is integrally formed on at least one end of the end side 503b. The smear member 503a is a columnar guide extending from the spur cover 503 to the inside of the apparatus, and has a guide surface 503c for curving and guiding the side end portion of the recording material. Guide surface 503c
At the end on the side of the spur 502, an inclined guide surface 503d is formed for smoothly curving the side end of the recording material sent while keeping a flat surface.

Except for the left and right ends of the recording material 2 to be discharged, the line connecting the points at which the discharging roller 501b as the discharging means and the recording material contact each other is a substantially straight line. However, at the end of the recording material 2, the guide surface 503c of the smear member 503a is formed.
Since it is in contact with, the contact point is not on the straight line.

The shape and x, of this smear member 503a
The y and z dimensions vary depending on various conditions such as the discharge angle, the spur pressure contact force, and the recording material type. In this example, the discharge angle is 65 degrees, the spur pressure contact force is several tens of g or less, and the recording material is usually For paper, x = several mm or less, y = several mm
Hereinafter, z is set to about 1 to 5 mm. As a result, the convex portion (curved portion) of the end portion of the recording material formed by the smear member 503a becomes the shaded portion A shown in FIG. 3, and the discharge roller 501a on the upstream side and the spur 502a flatten the recording material on the recording area B. It does not affect the degree. Then, as can be seen from the X portion of FIG. 2, the bending of the edge of the recording material in the paper width direction by the smear member 503 forms the waist of the recording material, and a reliable smear countermeasure is provided as in the conventional example. Done.

Further, according to this smear countermeasure, since the end portion of the recording material is dealt with, it is possible to deal with various sizes, and it is particularly effective in a recording apparatus for offices handling various sizes.

In this example, the recording apparatus in which the recording material is set on the left side has been described, but the present invention is not limited to this.

Recording head 9 applied to this embodiment
Has a heating element provided in a nozzle for ejecting ink, and the thermal energy generated by the heating element forms a bubble in the ink by utilizing the film boiling generated in the ink. Is configured to be ejected from the nozzle.

(Embodiment 2) In Embodiment 1, an example is shown in which a spur cover, which is a support member for a spur, is provided with a smear member. However, as shown in FIGS. 5, 6, and 7, automatic sheet feeding is performed. The smear members 505, 506, 507 are formed on the members around the discharging portion such as the apparatus 100, the platen 6, the stacker 13, and the spur 502b and the smear members 505, 506,
It is obvious that the same effect as that of the first embodiment can be expected by the configuration capable of managing the positional relationship x, y, z with respect to 507, for example, the fitting of the members shown in the first embodiment.

(Third Embodiment) In the above-described embodiment, the smear member is formed integrally with the member around the discharge portion of the recording apparatus. However, as shown in FIG. 8, the smear member 508 is a separate component.
If it is configured and is supported by another member, it is possible to improve the assembling property.

Then, it is rotatably supported around the rotation center 508a and is biased by a spring so that it can be retracted when the spur cover 509 about the rotation center 509a is opened and closed, such as ink cartridge replacement and paper jam processing. There is no hindrance to the work.

Further, in this example, z described in the first embodiment is used.
Since it is variable, it is possible to deal with various conditions, and it is possible to broaden the applicable conditions of the recording apparatus.

This correspondence example is not limited to this configuration, and by adopting a slidable support method in the paper width direction, it is possible to deal with x and y described in the first embodiment. .

(Embodiment 4) In the above embodiment, the smear member on the non-printing surface side of the recording material is shown. However, as shown in FIG. 9, the surface of the recording material is fixed on the printing surface side. Even with the structure in which the spur 510 driven in by a certain amount is applied, it is possible to form the waist of the recording material while ensuring the flatness of the printing surface of the recording material, and the same effect as that of the above-described embodiment is expected. it can.

Further, instead of using spurs, by applying a rib-shaped smear member to a print margin portion (a range of about 3 mm from the edge of the recording material (left and right) in a general recording apparatus), without using spurs, It is possible to form the waist of the recording material from the printing surface side, and the same effect as that of the above-described embodiment can be expected.

The embodiments described above are not limited to this, but include a wide range of applied technologies. For example, regarding the discharging direction of the recording material, an example of discharging in the upward direction is shown in the embodiment, but the present invention is not limited to this, and similar effects can be expected in the discharging direction in the horizontal direction and the downward direction. It is self-explanatory.

Further, the above-described embodiment is used in combination with the control such as detecting the print duty and having a stop time during printing, or reducing the feeding speed of the recording material, thereby providing a more reliable countermeasure against smear. Can be

As described above, in the above-described embodiment, the unevenness of the recording material does not affect the printing surface on the platen on the upstream side as a countermeasure against smear, and a good printing quality is obtained. Can be secured. Further, since the printing surface on the platen is flat, the distance between the head and the recording material can be minimized, and improvement in printing quality can be expected. Furthermore, there is no need to increase the depth of the stacker,
A sufficient stack capacity can be secured without increasing the mechanical size. Furthermore, as a countermeasure against smear, various sizes can be supported without requiring the user to perform a special operation, which greatly improves the operability.

[0037]

As described above, according to the present invention, a reliable smear countermeasure can be realized without deterioration of printing quality, increase in cost, enlargement of mechanism, and deterioration of operability.

[Brief description of drawings]

FIG. 1 is a sectional view showing the overall configuration of a recording apparatus according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged view of the recording apparatus according to the first embodiment of the present invention.

FIG. 3 is a partially enlarged view of the recording apparatus according to the first embodiment of the present invention.

FIG. 4 is a partially enlarged view of the recording apparatus according to the first embodiment of the present invention.

FIG. 5 is a part of a sectional view in the second embodiment of the present invention.

FIG. 6 is a part of a sectional view according to a second embodiment of the present invention.

FIG. 7 is a part of a sectional view in a second embodiment of the present invention.

FIG. 8 is a part of a sectional view in a third embodiment of the present invention.

FIG. 9 is a part of a plan view of the fourth embodiment of the present invention.

FIG. 10 is a cross-sectional view showing the overall configuration of a recording apparatus in a conventional example.

FIG. 11 is a plan view showing the overall configuration of a recording apparatus in a conventional example.

[Explanation of symbols]

 1 Recording Device 2 Recording Material 3 Conveying Roller 4 Registration Roller 5 Paper Pan 6 Platen 7 Guide Axis 8 Guide Rail 9 Recording Head 10 Carriage 11 Ejection Roller 12 Spurs 13 Stacker 14 Printing Device 100 Automatic Paper Feeding Device 101 Hopper 102 Paper Feeding Roller 501 Discharge roller 502 Spur 503 Spur cover 505-507 Smear member 508 Smear member 509 Spur cover

Claims (12)

[Claims] 1. A recording means for recording on a recording material, an ejecting means for ejecting the recording material recorded by the recording means, and a mounting means for placing the recording material ejected by the ejecting means. And a guide member that bends and guides at least one side end of the recording material discharged by the discharging means except for the side end thereof while maintaining the flatness. Recording device. 2. The recording means performs recording by ejecting ink onto a recording material.
The recording device described. 3. The recording apparatus according to claim 2, wherein the recording unit ejects ink by thermal energy. 4. The recording apparatus according to claim 1, wherein the discharging unit has a pair of rotating bodies that sandwich and convey the recording material. 5. The recording apparatus according to claim 4, wherein the guide member is provided on a support member that supports one of the pair of rotating bodies. 6. The recording apparatus according to claim 1, wherein the guide member is provided only on the set reference side of the recording material. 7. The feeding means for feeding recording material to the recording means one by one, and the guide member is formed by a part of the feeding means. The recording device described. 8. A platen for guiding a recording material at a position facing the recording means, and the guide member is provided on the platen.
The recording device described. 9. The recording apparatus according to claim 1, wherein the guide member is formed on the mounting portion. 10. The recording apparatus according to claim 1, wherein the guide member is movably supported and can be retracted to a fixed position. 11. The discharging unit has a plurality of pairs of sandwiching members for sandwiching a sheet, and the plurality of sandwiching member pairs are arranged side by side in the discharging direction. Recording device. 12. The recording apparatus according to claim 2, wherein the recording unit has a multi-nozzle of 70 nozzles or more and a recording head capable of an ejection frequency of several kHz or more.