JPS62104758A - Recorder - Google Patents

Abstract

PURPOSE:To obtain a large-size high-speed, highly accurate color recorder having good color lap by a method in which a color recording for (Y-axis all area) X (X-axis all area) is completed by repeating color recording for (Y-axis block) X (X-axis all area) and the sending of recording paper by one- block of Y-axis by a recording paper sender mechanism while sending the recorded portion in the direction of X-axis. CONSTITUTION:A heating head 1, ink tanks 2a-2d, and ink screenings 3a and 3b are attached to an X-axis moving block to make up a recording section. The recording section is moved in the direction of X-axis by an X-axis ball screw 7b. A porous film 4 is detachably fixed to the body frame 6 by a reinforcing material 4a in such a way as to contact with the head 1. By one-time movement of the recording section, ink for one color for (Y-axis one block) X (X-axis all area) is jetted and recording on a rolled recording paper 8 and at the same time the film 4 is cleaned. When repeating the cycles four times by changing the moving direction of the recording section, color recording for (Y-axis one block) X (X-axis all area) can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a large-sized color recording device using an inkjet method.

[Summary of the invention]

Speaking of large recording devices, ink is intermittently ejected from nozzles with extremely fine holes on a rotating drum.
64'10';""Ji, 84+,zL"'1"!
An electrostatic recording method in which recording and development are performed using a single step is widely known. Here, we created countless and minute holes.)
Microscopic ink filled in the pores using a porous film: Inkjet 1 method in which ink is ejected by heat for recording,
Recording is performed by holding a portion of a large recording paper flat and feeding the paper in the Y-axis direction, and feeding the portion of the ink shared recording section excluding the porous film in the X-axis direction.

[Conventional technology]

Conventionally, large-sized recording devices are electrostatic recording that records on electrostatic recording paper, and for example, for color recording, B (blank), Y (yellow), and 1M (magenta) are used.

Using C (cyan) toner, the recording paper is moved back and forth to sequentially record and develop four colors, resulting in color recording:
Is going.

However, with this method, the image quality is unstable because electrostatic recording is affected by temperature and humidity, the accuracy and color overlap are unstable because the recording paper is moved back and forth, and the cost of electrostatic recording paper is higher than paper. There are problems such as being very expensive.

In addition, with the inkjet method, in which ink is intermittently ejected from nozzles with extremely fine holes onto recording paper wrapped around a large rotating drum, clogging of ink becomes a major problem, resulting in extremely high management costs. ing.

Therefore, an inkjet type recording apparatus using a porous film for supplying ink has been invented, for example, Japanese Patent Application Laid-open No. 71260/1982, which uses a porous film to supply ink, with the aim of reducing ink clogging, management costs, and cost. This type of inkjet recording device uses a porous film in which fine holes are formed in a number of shapes, and a thermal head, for example, is brought into contact with one side of this porous film, and the holes in the porous film generated by the heat of this thermal head are The pressure of the bubbles causes ink to be ejected from the holes and recorded on the opposing recording paper, solving the problems of the inkjet method using the nozzles and the problems of the electrostatic recording method.

[Problem that the invention seeks to solve]

However, when increasing the size using this method, the porous film and the ink storage portion become large, which causes problems such as high cost, difficulty in handling the porous film, and difficulty in cleaning the porous film.

On the other hand, for large-scale color printing, a plurality of each element is required, and each element also needs to be made large. This has resulted in problems such as high cost, slow speed, and poor accuracy and color overlap.

[Means for solving problems]

In view of the above problems, a mechanism is used to feed a portion of recording paper in the Y-axis direction while pressing it against a flat platen, and moves one block at a time in the Y-axis direction. The film is fixed to the main body frame, and the heating hand that can heat each dot of one block in the Y-axis direction, the ink tank section of each color, and the ink cleaning section are all positioned and moved simultaneously on the opposite side of the porous film from the recording paper. By doing this, ink filling, heating recording, and ink cleaning for each color are performed in one cycle. By performing this cycle with inks of three or more colors, the Y-axis I block is colored. By repeating this one-block movement in the Y-axis direction and color recording in the X-axis direction, it not only becomes possible to perform large-scale color inkjet recording, but also achieves extremely low cost, highly stable, high-speed, and high-precision inkjet recording. has been realized.

[Effect]

Ink tank section 4 when realizing color recording with this configuration
First, the operation of this recording apparatus using two ink cleaning sections will be explained.

The recording paper feed mechanism moves the recording paper from the roll to Y.
It is fed out in the axial direction, and a portion of the recording paper is held flat by a flat platen.

On the other hand, the X-axis moving mechanism moves the X-axis block and a section (hereinafter referred to as the recording section) consisting of the ink tank section, heating head, and ink cleaning section fixed thereto to the starting point.

First, the recording unit starts moving in the X-axis plus direction, the first color ink tank at the beginning is selected, and while it is pressed against the porous film, the porous film is sprayed with a weak ink shower or with a sponge-like roller pressed against it. Fill the holes in the film with ink and continue moving.

Here, when the heating head having a plurality of dot heating sections (one block) in the Y-axis direction enters the ink filling section, the controller controls the i! The selected dot heating section generates heat, and the ink on the dot heating section is ejected and adhered to the recording paper. This is done one line at a time in the X-axis direction while moving.

Furthermore, the ink cleaning section for the selected 1st and 3rd colors at the rear in the plus direction of the X-axis is pressed against the porous film and moves while removing unnecessary ink from the porous film by vacuum pressure from the outside.

In this way, the first block of (Y-axis 1 block) x (X-axis combined area)
Record the color of the eyes.

Next, while moving the recording unit in the negative direction of the X-axis,
Select the ink tank part of the color (first in the negative direction of the X-axis) and the ink cleaning part for the second and fourth color (the rear part in the negative direction of the X-axis), and similarly, (1 block on the Y-axis) ) record the second color.

Similarly, the third color and the fourth color are repeated, and color recording of (Y-axis l block) x (X-axis total area) is completed.

Next, the recording paper feed mechanism moves the rolled recording paper one block in the Y-axis direction.

Sequentially by recording unit (YM1 block) x (X-axis combined area)
Color recording of (Y-axis total area) x (X-axis total area) is completed by repeating color recording and block movement of the rolled recording paper along the Y axis by the recording paper feeding mechanism.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIGS. 2 and 3 are an enlarged view of the recording unit and an installation view of the recording unit, which have the basic parts for recording.

Here, reference numeral 1 denotes a heating head having a plurality of dot heating sections (one block) in the Y-axis direction, which electrically generates heat one dot at a time.

23 to 2d are the ink tank parts, and the X
Two heating heads are provided on each of the positive and negative sides of the shaft, and selective vertical movement mechanisms (not shown) selectively move the heating heads to approximately the same height.

3a and 3b are ink cleaning parts, one each is provided on the plus side and the minus side of the X axis with respect to the heating head, and although not shown, they are selectively moved to the height of the heating head by a mechanism similar to the ink tank part. do.

The heating head, ink tanks 23 to 2d, and ink cleaning sections 3a and 3b are attached to the X-axis moving block 5 and constitute a recording section.

Further, the recording section is movably held with respect to the main body frame 6, and is moved in the X-axis direction while being positioned by an X-axis feed mechanism consisting of an X-axis ball screw 7b connected to an X-axis motor 7a.

On the other hand, the porous film 4 is fixed to a reinforcing material 4a to ensure sufficient strength, and is fixed to the main body frame 6 by the reinforcing material 4a so as to be detachable and in contact with the heating head 1.

Further, the four ink tank sections (2a to 2d) and the two ink cleaning sections (3a, 3b) are connected to four color ink supply sections and a vacuum pressure supply section through piping (not shown), respectively. and is supplied with vacuum pressure.

In this configuration, at the same time as the recording section moves, one of the ink tank sections at the front in the moving direction is selected for the heating head,
The porous film 4 is filled with ink, and by heating the heating head 1, the necessary ink of the porous film 4 is ejected in the opposite direction of the heating head 1.

Furthermore, an ink cleaning section located at the rear of the heating head 1 in the moving direction is selected to remove excess ink from the porous film 40.

In this way, with one movement of the recording unit (Y-axis l block)
Ink for one color x (X-axis total area) is ejected and recorded onto the roll-shaped recording paper 8 provided facing the porous film 4, and at the same time, the porous film 4 is cleaned.

If the above cycle is repeated 4 times by changing the moving direction of the recording section and selectively using the 4 ink tank sections (2a to 2d) and the 2 ink cleaning sections (3a, 3b), , (1 block on the Y axis) x (total area on the X axis) color recording is possible.

FIG. 1 is an overall view of the present recording apparatus.

Here, a flat platen 9 is provided parallel to the porous film 4 fixed to the main body frame 6.

On the other hand, a roll of recording paper 8 is provided on the negative side of the Y-axis of the flat platen 9, and a recording paper feeding mechanism 1 is provided on the positive side of the Y-axis.
0 is set.

Although not shown, there is a recording paper feeder on the rolled recording paper 8 side! A mechanism is provided that generates tension in the direction opposite to the feeding direction of the recording paper 3110, and presses a portion of the recording paper against the flat platen 9 to hold it flat. The rolled recording paper 8 can be positioned and moved in the Y-axis plus direction by a recording paper feeding mechanism.

The recording device with this configuration, as described above, while feeding the recording section in the X-axis direction, (Ytilh 1 block) x (X-axis combined area)
color recording, and the recording paper feed mechanism 10 moves the recording paper in Y
By sequentially repeating feeding one block along the axis, a color inkjet recording device is created that completes color recording of (Y-axis total area) x (X-axis total area).

Note that ink is filled into the porous film 4 in the ink tank portions (2a to 2d) by a weak ink shower (not shown) or by a porous roller 2e such as a sponge soaked in ink as shown in FIG. This can be achieved by deflection due to contact pressure or by pressing with a spring or the like.

Further, although not shown, the removal of ink from the porous film 4 in the ink cleaning section (3a, 3b) can be realized by providing a slit for vacuum suction.

〔Effect of the invention〕

As described above, the present invention is an inkjet method that uses a porous film and a heating head, and there are problems such as instability due to nozzle clogging in inkjet using generally well-known nozzles, or instability of image quality due to temperature and humidity in electrostatic recording methods. Management problems such as the use of high-cost special paper can be solved and management costs can be reduced.

In addition, although it is an inkjet method that uses a porous film and a heating head, there is no need to increase the size of the porous film or ink storage area even when the size is increased, which solves all problems such as the difficulty of handling the porous film and the difficulty of cleaning the porous film. Not only that, but extremely low costs can be achieved.

Further, there is an effect that there is no need to move the recording paper back and forth, and a large-sized color recording device with high speed, high precision, and good color overlapping can be realized.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the entire recording apparatus of the present invention. Second
The figure shows the basic parts of the recording device for recording,
FIG. 3 is a perspective view showing how the recording unit is attached. FIG. 3 is an enlarged perspective view showing the recording section moving in the X-axis direction. FIG. 4 is an enlarged cross-sectional view showing the porous roller of the ink tank portion that fills the porous film with ink. ■------Heating heads 2a to 2d-----Ink tank part 2 e----
- Porous rollers 3 a, 3 b --- Ink cleaning section 4
-------- Porous film 4a...-Reinforcement material 5--X-axis moving block 6-----Main frame 7 a-----X-axis motor 7b--1--X axis Ball screw 8--Rolled recording paper 9--Flat platen 10--Recording paper feeding mechanism Recording device oblique 'FL view Figure 1 Figure 2 Expansion of recording section #+ view Figure 4 Ink tank back view

Claims (8)

[Claims] (1) Consisting of a heating head that has countless fine holes filled with ink, and uses bubble pressure generated by the heat of the heating head to apply ink to the other side of the porous film. In a recording device that performs recording by ejecting and adhering to recording paper, a) a belt-like strip that is larger on one side (X-axis) of the recording range and smaller on the other axis (Y-axis);
and a porous film detachably fixed to the main frame as one plane; b) an X-axis moving block that holds one side of the porous film so as to be movable in the X-axis direction parallel to the porous film; c) ) a heating head fixed to the X-axis block, forming a plurality of dot heating parts in the width direction (Y-axis direction) of the porous film, and in contact with the porous film; at least one ink tank portion that automatically contacts and escapes from the film, or remains in contact with the film and fills the porous film with ink upon contact; and e) automatically supplies ink to the ink tank portion. and f) at least one ink fixed to the X-axis block, which automatically contacts and escapes from the porous film, or which remains in contact and removes ink from the pores of the porous film upon contact. a cleaning unit; g) an X unit for positioning and moving the X-axis block in the X-axis direction;
h) On the opposite side of the porous film from the heating head, the recording paper is manually or automatically fed, and the X-axis direction is above the recording range, and the Y-axis direction is the dot heating part (1 block) of the heating head. )
i) a recording paper feeding mechanism that positions and moves the recording paper in the Y-axis direction while pressing the recording paper against the flat platen;
A recording device characterized by recording on recording paper. (2) The recording apparatus according to claim 1, wherein at least three ink tanks are provided, each containing ink of a different color to perform color recording. (3) The recording apparatus according to claim 1, wherein the heating head is a thermal head. (4) The heating head is an electrode head, and a resistance layer is formed on the head contact surface of a porous film, or a sheet-like resistance layer is detachably held between the porous film and the head, and an energization heating method is adopted in which the resistance part generates heat. A recording device according to claim 1. (5) A patent in which a) the recording paper is a rolled recording paper, and b) a mechanism that generates tension in the opposite direction to the recording paper feeding mechanism is provided on the rolled recording paper side to press and hold the recording paper against a flat platen. A recording device according to claim 1. (6) a) The recording paper is a roll of recording paper with positioning holes provided at both ends of the width of the recording paper, and b) The recording paper feeding mechanism is a recording paper feeding mechanism provided with a sprocket corresponding to the positioning holes of the recording paper. , c) The recording apparatus according to claim 1, wherein a mechanism for generating tension in a direction opposite to the recording paper feeding mechanism is provided on the rolled recording paper side to press and hold the recording paper against a flat platen. (7) A porous roller such as a sponge rotatable in the width direction of the porous film is provided inside the ink tank, and a mechanism is provided for selectively pressing the porous roller against the porous film. Recording device as described. (8) A vacuum pressure section is provided to supply vacuum pressure to the ink cleaning section, and the ink is removed by the vacuum pressure of the ink cleaning section.
Recording device as described in section.