JP2004179741A - Image reading and recording apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ink jet image reading and recording apparatus wherein no jitter takes place on an image due to the start / stop of a print head. <P>SOLUTION: In the ink jet image reading and recording apparatus wherein a read running body reads recorded articles on an original and a print running body with a tank filled with print ink is driven to record the read recorded articles on a recording medium, the drive direction (read direction B) of the read running body is made in crossing with the drive direction (print direction C) of the print running body (print head 31). <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an image reading / recording apparatus, and more particularly, to an ink jet type image reading / recording apparatus that prevents jitter on an image due to start / stop of a print head.
[0002]
[Prior art]
FIG. 5 is an external perspective view of a conventional ink jet type image reading and recording apparatus.
Examples of the image reading and recording apparatus include a copier, a facsimile machine, a multifunction machine having a copy function, a facsimile function, and the like.
[0003]
As shown in FIG. 5, a conventional inkjet type image reading and recording apparatus 100 includes an apparatus main body 110, a cover 120, and a paper feed tray 130.
The image reading and recording apparatus 100 is a copy machine, and is capable of copying a thick original (book original) such as a book.
[0004]
As is well known, the following is a characteristic of an image reading and recording apparatus provided with an ink jet type print head (ink jet head).
(1) Quietness (2) Full-color printing is relatively easy
By the way, in the image reading / recording apparatus 100 shown in FIG. 5, the transport direction of the recording paper P to the recording unit by the print head (paper feeding direction A) In general, the scanning direction (reading direction B) of the reading traveling body (optical means or the like) of the document reading unit is coincident (parallel). In the figure, reference numeral C denotes a printing direction in which a print traveling body (a print head or the like) scans, reference numeral D denotes a discharge direction in which a recorded recording sheet P is discharged, and reference numeral E denotes a user (user) who uses the image reading and recording apparatus 100. Is the operation direction in which is operated.
[0006]
[Problems to be solved by the invention]
However, the print head is provided with four types of ink tanks of black, cyan, magenta, and yellow. Since the weight is heavy, the moment of inertia is large.
[0007]
The vibration at the time of stoppage of the start of the print head induces speed unevenness in the moving direction of the reading traveling body as it is, which causes jitter (jitter: fluctuation) and color shift on an image. Further, since the traveling directions of the reading traveling body and the printing traveling body coincide with each other as described above, a large vibration component generated when the printing traveling body starts and stops affects the feed speed of the reading traveling body as it is, and the It causes jitter and color shift.
[0008]
SUMMARY OF THE INVENTION The present invention has been made in consideration of the above circumstances, and has as its object to provide an ink jet type image reading / recording apparatus which prevents jitter on an image due to start / stop of a print head.
[0009]
[Means for Solving the Problems]
To achieve the above object, the invention according to claim 1 reads a recorded matter of a document by a reading traveling body, and runs the read recorded matter on a printing traveling body having a tank filled with printing ink. In an ink jet type image reading and recording apparatus for performing recording on a recording medium, the traveling direction of the reading traveling body is crossed with the traveling direction of the printing traveling body.
[0010]
With this configuration, the traveling direction of the reading traveling body and the traveling direction of the printing traveling body are crossed, so that the vibration amplitude direction generated by the printing traveling body (print head) becomes substantially 90 degrees with the traveling direction of the traveling body. In addition, the influence of the vibration generated at the time of stopping the start of the printing traveling body on the reading traveling body can be suppressed, and the occurrence of jitter and the occurrence of color shift can be prevented.
[0011]
Next, according to a second aspect of the present invention, in the image reading and recording apparatus according to the first aspect,
When the reading traveling body is traveling on the original, the traveling of the printing traveling body is stopped.
[0012]
With this configuration, the printing traveling body (print head) is stopped while the reading traveling body is traveling, so that vibration at the time of starting and stopping by the printing traveling body does not occur, and it is possible to prevent jitter generated during reading. .
[0013]
Next, according to a third aspect of the present invention, in the image reading and recording apparatus according to the second aspect,
After the reading of all the originals is completed, the printing traveling body is caused to travel.
[0014]
With this configuration, as shown in FIG. 3, for example, after all of the documents have been read (the reading traveling body is not traveling), the printing traveling body is caused to travel. Does not occur, and it is possible to prevent jitter occurring at the time of reading.
[0015]
Next, according to a fourth aspect of the present invention, in the image reading and recording apparatus according to the second aspect,
The reading of the original and the printing of the read original are alternately performed, and the original is not read during printing.
[0016]
In this way, as shown in FIG. 4, for example, after the reading of a certain portion of the document is completed (the reading traveling body is not traveling), the printing traveling body is driven to print the read location. In addition, vibrations at the time of starting and stopping by the printing traveling body do not occur, and it is possible to prevent jitter that occurs at the time of reading.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described based on the illustrated embodiments.
FIG. 1 is an external perspective view of an ink jet type image reading and recording apparatus GY of the present embodiment, and FIG. 2 is a side sectional view showing an internal configuration of the image reading and recording apparatus GY. The parts already described are given the same reference numerals, and redundant description will be omitted.
[0018]
As shown in FIGS. 1 and 2, the image reading and recording apparatus GY includes a reading unit 10, a recording paper supply unit 20, a printing unit 30, a paper discharge unit 40, and a cover 50.
The reading section 10 is provided with a reading traveling body 11, and reads recorded items from a document (not shown) while traveling in the reading direction B. The reading traveling body 11 includes, for example, an optical reading unit.
[0019]
In the recording paper supply unit 20, blank recording papers P are stacked and placed in a cassette (not shown), and are fed upward one by one by rotating the paper feed roller 21 in a counterclockwise direction. Reference numeral 22 denotes a guide unit that guides the conveyance of the recording paper P. Reference numeral 23 denotes a special paper insertion slot into which special paper such as a postcard that cannot be separated and transported is manually inserted.
[0020]
The printing unit 30 is provided with an ink jet type print head 31, and the print head 31 moves in a direction perpendicular to the plane of the paper of this specification. A guide shaft 32 guides the print head 30 in a direction perpendicular to the paper surface.
[0021]
The paper discharge unit 40 includes a paper discharge roller 41 for discharging the output paper P # recorded on the recording paper P, and a paper discharge table 42 on which the output paper P is placed.
As described above, in the image reading and recording apparatus GY, the reading direction B of the reading traveling body 11 and the printing direction C of the printing traveling body (print head 31) cross (orthogonally). Therefore, as in the conventional example shown in FIG. 5, the reading direction B and the printing direction C do not coincide with each other, so that a large vibration component at the time of starting and stopping due to the coincidence can be suppressed.
[0022]
Next, the operation of the present embodiment will be described.
FIG. 3 is a flowchart simply showing the operation of the printing traveling body after the reading by the reading traveling body is completely completed. FIG. 4 is a diagram illustrating the printing operation performed only when the reading traveling body performs the intermittent operation and the reading operation is suspended. It is a flowchart figure in the case of operating a running body.
[0023]
First, with reference to FIG. 3, a case where the printing traveling body is operated after the reading by the reading traveling body is completely completed will be described.
As shown in FIG. 3, the original is set on the reading unit 10, the power switch is turned on to start copying (step S1), and the reading traveling unit 11 is driven to start reading (step S2). After the reading of all the documents is completed, the reading traveling body 11 is stopped (step S3).
Next, the printing is started by moving the print head 31 (step S4), and when the writing of the document portion read by the reading traveling body 11 is completed, the copying is completed (step S5).
[0024]
With this configuration, since the reading traveling body 11 and the printing traveling body (print head 31) do not travel at the same time from the start of writing (step S4) to the completion of copying (step S5), printing traveling during reading is not performed. It is not affected by vibrations caused by the running of the body and does not cause jitter or color shift.
[0025]
Next, a case will be described with reference to FIG. 4 where the reading traveling unit performs an intermittent operation and operates the printing traveling unit only while the reading operation is suspended.
As shown in FIG. 4, the original is set on the reading unit 10, the power switch is turned on to start copying (step S11), and the reading traveling unit 11 is driven to start reading (step S12). Reading is continued until reading of a preset reading amount (for example, half of the A4 size document) is completed (step S13: NO).
[0026]
When the reading of the half of the A4 size document is completed, the reading of the document is interrupted (step S13: YES), the writing is started by the print head 31 (step S14), and the writing is continued until the reading of the half of the document is completed (step S14). Step S15: NO).
When the writing for the half of the original has been completed, the writing is interrupted (step S15: YES), and when the scheduled copying operation is completed (step S16: YES), the copying is completed.
[0027]
If the scheduled copy operation has not been completed (step S16: NO), the process returns to step S12 and repeats steps S12 to S16. Eventually, when all the operations are completed (step S16: YES), the copying is completed (step S17).
[0028]
【The invention's effect】
As described above, according to the present invention, the following effects can be exerted.
According to the first aspect of the invention, the traveling direction of the reading traveling body and the traveling direction of the printing traveling body are crossed, so that the vibration amplitude direction generated by the printing traveling body (print head) is substantially the same as the traveling body moving direction. The angle is 90 degrees, and the influence of the vibration generated at the time of stopping the start of the printing traveling body on the reading traveling body is minimized, and it is possible to prevent the occurrence of jitter and color shift.
[0029]
According to the second aspect of the present invention, since the printing traveling body (print head) is stopped while the reading traveling body is traveling, vibration of the printing traveling body does not occur, and it is possible to prevent jitter generated during reading. .
[0030]
According to the third aspect of the present invention, after the reading of all the originals is completed (the reading traveling body is not traveling), the printing traveling body is caused to travel, so that the vibration when the printing traveling body starts and stops does not occur. Also, it is possible to prevent the occurrence of jitter at the time of reading.
[0031]
According to the fourth aspect of the present invention, after the reading of a certain portion of the document is completed (when the reading traveling body is not traveling), the printing traveling body is caused to travel for printing at the read location. Vibration does not occur at the time of starting and stopping due to, and jitter occurring at the time of reading can be prevented.
[Brief description of the drawings]
FIG. 1 is an external perspective view of an embodiment of the present invention.
FIG. 2 is a side sectional view of the embodiment.
FIG. 3 is a flowchart of a case in which the printing traveling unit is simply operated after reading by the reading traveling unit is completely completed in the embodiment;
FIG. 4 is a flowchart in the embodiment when the reading traveling unit performs an intermittent operation and operates the printing traveling unit only during a pause of the reading operation;
FIG. 5 is an external perspective view of a conventional example.
[Explanation of symbols]
A Paper feeding direction B Reading direction C Printing direction D Paper discharging direction E Operating direction GY Image reading / recording device P Recording paper PО Output paper 10 Reading unit 11 Reading traveling unit 20 Recording paper supply unit 21 Feed roller 22 Guide unit 23 Special paper Insertion port 30 Printing section 31 Print head 32 Guide shaft 40 Paper discharge section 41 Paper discharge roller 42 Paper discharge table 50 Cover 100 Conventional image reading and recording apparatus 110 Main body 120 Cover 130 Paper feed tray

Claims (4)

In an ink-jet type image reading / recording apparatus which records a document on a recording medium by reading a recorded matter of a document by a reading traveling body and moving the read recorded matter on a printing traveling body having a tank filled with printing ink. An image reading and recording apparatus wherein the traveling direction of the reading traveling body and the traveling direction of the printing traveling body are crossed. The image reading and recording apparatus according to claim 1,
An image reading and recording apparatus, wherein when the reading traveling body is traveling on a document, the traveling of the printing traveling body is stopped. The image reading and recording apparatus according to claim 2,
An image reading and recording apparatus, wherein after the reading of all the originals is completed, the printing traveling body is caused to travel. The image reading and recording apparatus according to claim 2,
An image reading and recording apparatus wherein reading of the original and printing of the read original are alternately performed, and the original is not read during printing.

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