JPS62136468A - Electrostatic recording device - Google Patents

Abstract

PURPOSE:To improve the quality of a recording figure by forming ventilating holes on the part opposed to the basic paper of an electrostatic recording paper in the recording paper guides arranged between a recording paper roll holder and an electrostatic recording head. CONSTITUTION:An electrostatic recording paper 7 driven out from a recording paper roll 6 held on a holder 5 is inserted between a feed roller 8 and a pinch roller 9 and guided into between a platen roller 10 and an electrostatic recording head 11. While, the recording paper guides 12 and 13 whose one side is bent are arranged between the holder 5 and the electrostatic recording head 11. On the upper recording paper guide 12, ventilating holes 17 consisting of a number of circular holes 17a drilled on the part faced to a paper transport passage 14 are formed. Therefore, the air between the recording paper guides 12 and 13 is exchanged with the outside air through the ventilating holes 17, and the recording figure which, has high quality and is free from the uneveness of light and shade can be obtained.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to an electrostatic recording device, and relates to a structure of a recording paper guide disposed between a holder that holds a recording paper roll and an electrostatic recording head. [Technical Background of the Invention] Electrostatic recording paper used in electrostatic recording devices has a dielectric layer 1, a dielectric layer 2, and a base layer 5 shown in FIG. It consists of three layers of paper 3, and a filler 4 such as calcium carbonate is dispersed in the dielectric layer 1 to make the surface finely uneven. Such electrostatic recording paper is wound into a cylindrical shape and held in a holder in the gt housing as a recording paper roll, and one end of the electrostatic recording paper fed out from the recording paper roll is connected to a feed roller and a pinch. The recording medium is held between a roller and a platen roller, and further between a platen roller and an electrostatic recording head.

The electrostatic recording paper set in the device housing in this way is sequentially conveyed onto the electrostatic recording head by the driving force of the feed roller and platen roller, and information is recorded on the dielectric layer 1 by the electrostatic recording head. Ru.

[Problems with background technology]

By the way, in such an electrostatic recording device, a recording paper guide is disposed between the holder that holds the recording paper roll mentioned above and the electrostatic recording head, and the electrostatic recording paper guide is disposed between the holder that holds the recording paper roll mentioned above and the electrostatic recording head. The recording paper is guided by this recording paper guide and led to the electrostatic recording head.

However, the interval between the recording paper guides is set to a narrow width of about 1 to 2 square centimeters in order to reliably guide the leading edge of the electrostatic recording paper. Therefore, air circulation is poor in the space sandwiched by the recording paper guides (and air tends to accumulate).

As a result, in the above electrostatic recording device, when the electrostatic recording paper is placed in a recording standby state, the VC, the part housed in the paper guide and the part not housed in the paper guide are outside the VC. The ability to follow changes in the environment is not the same,
For example, if this electrostatic recording paper is placed in a dry environment during standby, the portion of the electrostatic recording paper that is not housed in the recording paper guide will dry in a relatively short time, but It takes a long time for the electrostatic recording paper in the stored portion to dry.

Therefore, if a recording operation is performed before the portion of the electrostatic recording paper housed in the recording paper guide has dried, density unevenness may occur in the recorded image due to the difference in moisture content in the electrostatic recording paper. There has been a problem in that images may occur or local image quality defects may occur.

[Purpose of the invention]

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, an object of the present invention is to provide an electrostatic d-pi recording device that can always obtain high-quality recorded images.

[Summary of the invention] In order to achieve the above object, the present invention provides a
) A ventilation hole is formed in the part of the electrostatic recording paper that faces the base paper of the L recording paper, and the air between the recording paper guides and the outside air are connected to each other. Ensure adequate ventilation.

[Embodiments of the invention]

The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 shows an embodiment of an electrostatic recording paper device according to the present invention.

In this electrostatic recording device, a recording paper roll 6 is held in a holder 5, and the dielectric layer, which is the recording surface, faces outward from the roll. The leading edge of the electrostatic recording paper 7 fed out from the recording paper roll 6 is sandwiched between a feed roller 8 and a pinch roller 9, and then guided between a platen roller 10 and an electrostatic recording pad 1). Be it.

On the other hand, a recording paper guide 12.1) whose negative side is bent is arranged between the holder 5 and the electrostatic recording pad 1). A paper conveyance path 4 is formed between the recording head 1 and the recording head 1. Further, holes 15.16 are formed in each of the recording paper guides 12.1), and the feed roller 8 and the pinch roller 9 are provided with holes 15.16.
are in contact with each other in the paper transport path 14 through these holes 14.15. Also, the upper recording paper guide 12 of these recording paper guides i2.1) is shown in FIG. As shown in FIG. 1, ventilation holes 17 are formed in a large number of circular holes 17a' over almost the entire surface facing the paper conveyance path 14.

Incidentally, in FIG. 1, the reference numeral 18 indicates an automatic cutter.

In the electrostatic recording apparatus configured in this way, the electrostatic recording paper 7 is conveyed by the driving force of the feed roller 8 and the platen roller 1o, and a latent image is formed on the recording paper by the electrostatic recording roller 1). be done. Next, the portion on which the # image has been formed is cut off by an autocutter 18, developed by an appropriate means, and further subjected to uniform layering.

When the 7-t-shaped recording paper is cut from the electrostatic recording paper 7 in this manner, the leading edge of the electrostatic recording paper 7 is rewound to the standby position indicated by S in the figure. Then, -゛1 Recording paper 7 waits in this state until the next recording starts◎During that time, the air between the recording paper guides 12.1) is sufficiently connected to the outside air through the ventilation holes 17. In the above embodiment, among the recording paper guides 12.1), the upper recording paper guide 12 facing the electrostatic recording paper 70 base paper
In addition to this recording paper kite 12, there are also ventilation holes 17fj in the lower recording paper guide 1). : It goes without saying that it is okay to form.

Further, in the embodiment described above, the ventilation holes 17 are formed by drilling a large number of circular holes 17a, but the ventilation holes 17 may also be formed behind the slits. It is preferable that the ventilation holes 17 have a sufficient opening area within a range (approximately 35% in the embodiment) that does not prevent movement of the static recording paper 7, and are evenly distributed over the entire area of the recording paper guide. ◎ [Effect of the invention] As explained above, in the electrostatic recording device according to the present invention,
Is the air between the recording paper guide placed between the recording paper roll holder and the electrostatic recording head vented? Even if the electrostatic recording paper is in a standby state for a long time with sufficient ventilation from outside air through Therefore, a high quality recording surface without density unevenness etc. can be obtained.

[Brief explanation of drawings]

FIG. 1 is a conceptual diagram showing a practical example of an electrostatic recording device according to the present invention, FIG. 2 is a perspective view of a recording paper guide employed in the electrostatic recording device, and FIG. 3 is a blank % recording. It is a sectional view of paper. 5... Holder, 6... Recording paper roll, 7... Electrostatic recording paper, 1)... Electrostatic recording head interval 2.1) - Recording paper guide, l 7... Ventilation hole 〇°6 next day・

Claims (2)

[Claims] (1) An electrostatic device characterized in that a ventilation hole is formed in a portion of the recording paper guide disposed between the recording paper roll holder and the electrostatic recording head that faces the base paper of the electrostatic recording paper. Recording device. (2) The electrostatic recording device according to claim (1), wherein the ventilation hole is formed by a large number of circular holes.