JPS6125843A - Recording device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a recording apparatus that performs recording by performing write scanning using an image information signal.

Conventional technology A printer that scans a document with a charging element, converts the black and white pixels along the scanning line into binary signals of on and off, and performs writing scanning and recording using the image information signal formed as a continuation of the signals; Recording devices for producing hard copies such as plotters and facsimiles include laser recording devices,
Various types of recording devices have been used in the past, such as light emitting diode array recording devices and inkjet recording devices.

However, laser recording devices have the disadvantage of being large and expensive, and light-emitting diode array recording devices have large variations in elements, resulting in poor yields, and the amount of light emitted decreases as the ambient temperature rises, so it is difficult to handle heat. Measures will be needed. In methods using these photoreceptors, handling of the photoreceptor is difficult.

Even when a photoreceptor is not used, the inkjet recording method has problems such as clogging of ink in the recording head and limitations on the types of paper that can be used. In addition, in the recording method called ESP, since the recording head and the recording medium are in contact with each other, there is a drawback that foreign matter such as toner may interfere with recording during printing.

Purpose The present invention eliminates the above-mentioned drawbacks of the conventional recording device that performs write scanning by driving the recording head using an image information signal, and eliminates problems such as ink clogging without using a photoreceptor. It is an object of the present invention to provide an inexpensive and highly reliable recording device with fewer paper limitations.

Structure In order to achieve the above-mentioned object, the present invention provides a recording body which is formed by laminating at least two layers, a dielectric layer and a conductive layer, and which moves at a constant speed, and a recording body that moves at a constant speed. A charging device arranged in the order of the moving direction, a recording head that selectively ejects droplets onto the recording medium while scanning and moving according to an image information signal, a toner developing device, a transfer device, and a toner image transfer device. The present invention is characterized by comprising means for fixing the transferred transfer paper and means for removing toner remaining on the recording medium after transfer.

FIG. 1 is a diagram illustrating the principle of the recording apparatus of the present invention.

The recording medium 1 used in this invention has two layers: a dielectric layer 2 and a conductive layer 6.
The conductive layer 6 is grounded.

First, the recording medium 1 is uniformly charged by the charger 4. In the example shown in the figure, (g) polarity is used (→ image quality is also possible (Figure (a)).

Thereafter, the liquid ejecting head 5 is driven according to the image information signal 6 to selectively eject the liquid 1117 onto the recording medium 1 . Since the liquid ejecting head 5 ejects the droplets 7 while moving at a constant scanning speed, the droplets are ejected and attached to the recording medium at the position where the image information signal is turned on (Figure (b)). The liquid forming this droplet need not be colored. It is preferable that this liquid completely volatilizes during development, since this will cause fewer problems during development and other processes. As the liquid, volatile liquids such as benzine and ethyl alcohol are preferable. When the droplet 7 evaporates, almost no charge remains in the area to which the droplet was attached (image area), and the charge (g) remains in the background area, resulting in the formation of a latent image ( (C) Figure). When the recording medium 1 on which the latent image has been formed is developed with (g) charged toner 8 by the reversal development method, the charged toner 8 adheres only to the image area from which the electric charge has been removed, forming a developed image (Fig. ). Note that if the charger 4 charges the toner (→ polarity), the toner will also be charged (→
Polar. This toner image 11 is transferred by the transfer charger 9 onto a transfer paper 10 fed between the recording medium 1 and the transfer charger 9 (FIG. (e)). The transfer paper 10 on which the toner image 11 has been transferred is fixed by a fixing device 12 to obtain a hard copy.

In contrast to the method of removing the charge from the image area as shown in FIG. 1, recording is also possible by removing the charge from the background area and developing the latent image with toner of polarity opposite to that of the latent image.

Although it has been confirmed through experiments conducted by the present inventor that the charge is removed when the odor droplet 7 volatilizes as shown in FIG. 1(c), the mechanism thereof is not clear. This is probably due to the fact that when the liquid adheres to the recording medium, its surface resistance temporarily decreases and the electric charge is diffused, and furthermore, when the liquid evaporates, the electric charge diffused in the liquid is also dissipated at the same time. Ru.

FIG. 2 shows an embodiment of the recording apparatus of the present invention constructed based on the above theory.

In this embodiment, a recording medium 1 formed by laminating a dielectric layer 2 and a conductive layer 3 is formed as a drum, and around the drum there are chargers 4,
liquid ejecting head 5, developing device 13, transfer charger 9,
A cleaner 14 is provided. A fixing device 12 is provided in the path of the transferred paper.

The liquid ejecting bed 5 is of various types conventionally used in inkjet recording apparatuses, for example, a driver 15 drives the head 5 according to an image information signal 6 to turn on and off pressurizing force, and ejects liquid droplets from a nozzle. , a device that stops the droplets, or a device that sprays droplets at regular intervals, controls the charged electrodes using the image information signal B, and allows only the charged particles to adhere to the recording medium 1 with the subsequent deflection electrode, and other methods. A type of droplet that is collected from a gutter can be used. The liquid used is not ink but, as mentioned above, a normal liquid, especially one with high volatility, which has a low viscosity and does not cause problems such as nozzle clogging. Furthermore, since the ink is not sprayed onto the recording paper to make it adhere to the recording paper, there are no restrictions on the quality of the paper.

Effects As described above, according to the present invention, it is possible to obtain an inexpensive and highly reliable recording device that does not use a photoreceptor and does not cause clogging unlike the inkjet method.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram explaining the principle of the present invention step by step, and FIG. 2 is a sectional view showing a schematic configuration of an embodiment of a recording apparatus according to the present invention. 1... Recording body 2... Dielectric layer 6... Conductive layer 4... Charging means 5... Recording head
6... Image information signal 7... Droplet
9...Transfer charger 12...Fixing means 1
4...Residual toner removal means Fig. 1 (e) (f)

Claims (2)

[Claims] (1) In a recording device that records an image by performing writing scanning using an image information signal formed as a series of on/off binary signals corresponding to black and white of each pixel along a scanning line, a dielectric layer and a conductive layer are used. A recording body made up of a stack of at least two layers and moving at a constant speed, and a charging means arranged along the surface of the recording body in the order of the moving direction, and a charging means that charges the image information signal while scanning. a recording head for selectively ejecting droplets onto the recording medium in response to the transfer, a toner developing means, a transfer means, a means for fixing the transfer paper to which the toner image has been transferred, and a means for fixing the toner remaining on the recording medium after the transfer. 1. A recording device comprising: means for removing. (2) The recording device according to claim 1, wherein the liquid forming the droplets is a volatile liquid.