JPS60154771A - Picture recording device - Google Patents

Abstract

PURPOSE:To simplify device structure and whole recording process by statically transferring an electrostatically charged toner layer irradiated by light on a recording medium and fixing a toner image formed on the recording medium by a fixing means. CONSTITUTION:Light irradiation is performed corresponding to a picture pattern by a light irradiation part 27 on the reverse surface of a recording body 21. A photoconductive layer 21c part on which the light transmitting a transparent insulation body 21a and transparent conductive layer 21b of the recording medium 21 is irradiated, becomes an electric conductor. A charge of opposite polarity is charged into an electrostatically charged toner layer 32 part from the layer 21b; the layer 32 part is attached to a recording medium 24 by an electrostatic force by the voltage of a transferring electrode 25 opposite to the layer 32 part, and a toner picture 33 is formed. Thereafter, the picture 33 is fixed on the medium 24 by a fixing device 28. A toner 34 remaining on the recording body 21 is transmitted to a toner developer 22, where the electrostatically charged toner layer is uniformly formed again on the recording body 21, thereby enabling preparation for the next recording process.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to an image recording device using an electrophotographic recording method or an electrostatic recording method, and particularly relates to a recording device with a simplified recording process.

(bl Background of the Technology) There are two types of image recording devices used in facsimiles, etc.: electrophotographic recording method and electrostatic recording method. Both of them form a charge image called a latent image on a recording medium, and this latent image is coated with toner. Recording apparatuses that attach colored charged fine particles using electrostatic force to form a visible image and electrostatically transfer the visible image onto recording paper are well known, and various apparatuses have already been proposed.

(C1 Prior Art and Problems) In a conventional electrophotographic image recording apparatus, as shown schematically in FIG. Then, the photoconductor N2 is uniformly charged with electric charge by the initial charging corotron 3.Next, negative exposure corresponding to image information is performed on the photoconductive N2 by an exposure means 4 consisting of a laser or the like to form an electrostatic latent image. A toner image is formed by electrostatically adhering to the electrostatic latent image a black fine particle toner frictionally charged to the same polarity as the uniformly charged charge by the developing device 5 using an electric field. The toner image is transferred by the transfer corotron 6 onto the recording paper 10, which is charged with an electric charge of opposite polarity to that of the toner.The thus transferred toner image is fixed by heat or pressure in the fixing device 7. etc. to fix the toner on the recording paper 10. On the other hand, the toner remaining on the photoconductive N2 is neutralized with the charge on the photoconductive N2 and the charge of the toner by a static eliminating corotron 8 or the like to facilitate cleaning. Further, the photoconductive layer 2 is cleaned and removed by a fur brush cleaner 9, and the surface potential of the photoconductive layer 2 is brought to approximately zero, and image recording is completed through a series of processes from initial charging to cleaning of residual toner.Hereinafter, the above recording will be described. The process is set to repeat.

However, in such a conventional image recording apparatus, the transfer efficiency when transferring the toner image on the photoconductive layer 2 onto the recording paper 10 is generally about 80%, and the toner image cannot be completely recorded. Since the toner cannot be transferred onto the paper 10, it is essential to clean and remove the residual toner on the recording drum 1 before starting from one recording process to the next as described above. Therefore, the image recording process and its control of the device become complicated, and
There were drawbacks such as an increase in the size of the device configuration.

(dl Purpose of the Invention In view of the above-mentioned drawbacks of the conventional technology, the present invention is a novel system that simplifies the device configuration and the entire recording process by omitting the initial charging in the recording process and the process of cleaning and removing residual toner on the recording medium. The purpose of the present invention is to provide an image recording device that is easy to use.

According to the present invention, a recording medium in which a transparent conductive layer and a photoconductive layer are laminated, a toner developing means for uniformly forming a single layer of charged toner on the recording medium, and a charged toner. The toner image transfer means is composed of a toner image transfer means in which a transfer electrode is arranged on the recording medium side and a light irradiation part is arranged facing each other on the back side of the recording medium, with the recording medium on one layer being placed therebetween, and the toner image transfer means A voltage of the same polarity as that of the charged toner is applied to the transfer electrode, and a light irradiation unit irradiates light corresponding to image backing onto the recording medium that moves along the recording medium, and the irradiated charged toner is This is achieved by providing an image recording device characterized in that a single layer portion is electrostatically transferred onto a recording medium, and the toner image formed on the recording medium is further fixed by a fixing means. .

(fl Embodiments of the Invention Below, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a schematic diagram showing an embodiment of the image recording apparatus according to the present invention.

In the figure, 21 is a recording body, and in this example,
A configuration is adopted in which two layers, a transparent conductive layer 21b and a photoconductive layer 21c, are laminated on a belt-shaped transparent insulator 21a. However, the recording medium is not limited to this example. For example, a drum-shaped transparent insulator is used instead of the belt-shaped transparent insulator 21a, and a transparent conductive layer 21b is provided on the top surface of the drum-shaped transparent insulator.
It is also possible to have a structure in which two layers, ie, the photoconductive layer 21c and the photoconductive layer 21c, are laminated.

22 is a one-component magnetic toner developer that uniformly forms a single layer of charged toner on the belt-shaped recording body 21; 23 is a power source for applying a developing bias voltage; 24 is a recording medium such as recording paper; 25 is a transfer electrode; 26 is a power source for applying a transfer voltage; 27 is a light irradiation unit that turns on and off a light beam according to an image pattern input signal; and 28 is a fixing device that fixes the toner image formed on the recording medium 24.゛The operation of the device is as follows: First, the belt-shaped recording medium 21 is rotated in the direction of arrow A by a drive mechanism (not shown), and the third
As is clear from the partial explanatory diagrams in the figure, the charged toner 31 obtained by applying a voltage to the -component magnetic toner developing device 22 by the power supply 23 for applying a developing bias voltage to inject charges into the one-component low-resistance magnetic toner is sequentially charged as described above. A single layer 32 of charged toner is formed by uniformly depositing the charged toner on the belt-shaped recording medium 21 .

Next, a recording medium 24 such as recording paper is placed on the charged toner layer 32.
The above-mentioned recording body 21 is placed along the recording medium 24 side, and a transfer electrode 25 to which a voltage of the same polarity as the charged toner layer 32 is applied by the transfer voltage application power supply 26 and the back side of the recording body 21 is exposed to light. As is clear from the partial explanatory diagram of FIG. 4, when the irradiating sections 27 move between the opposing arrangement, the light irradiating section 27 irradiates the back surface of the recording medium 21 with light corresponding to the image pattern. conduct.

By this light irradiation, the transparent insulator 2 of the belt-shaped recording body 21]
, a, transparent conductive J'! The portion of the photoconductive layer 21c that is irradiated with the light that has passed through the transparent conductive layer 21b becomes a conductor.
Charges of opposite polarity are injected into the corresponding charged toner layer 32 portion, and the charged toner N32 portion is attached to the recording medium 24 such as recording paper by the electrostatic force caused by the voltage of the opposing transfer electrode 25, and the toner image 33 is formed. It is formed. Thereafter, this toner image 33 is transferred to the recording medium 2 in the fixing device 28.
4, and a recorded image is obtained. On the other hand, the recording body 2
The toner 34 remaining on the recording medium 21 is not removed and is transferred as it is to the one-component magnetic toner developing machine 22 together with the recording medium 21, and in the developing machine 22, a single layer of charged toner is uniformly formed on the recording medium 21 again. Prepared for the next recording process.

(g) Effects of the Invention As is clear from the above description, the image recording apparatus according to the present invention uses a recording medium in which a transparent conductive layer and a photoconductive layer are laminated as a configuration for forming a toner image on a recording medium. and a developing means for uniformly forming a layer of charged toner on the recording medium;
A toner image transfer means is formed on the recording medium and a toner image transfer means in which a transfer electrode is placed on the recording medium side and a light irradiation part is arranged facing each other on the back side of the recording medium across the recording medium in which the recording medium is placed on one layer of charged toner. Since the structure includes a fixing means for fixing the 1-toner image, the process of forming the toner image on the recording medium and the process of transferring the toner image to the recording medium are performed almost simultaneously, and the process of forming the toner image on the recording medium is performed almost simultaneously. A process for uniformly charging the recording medium and a process for cleaning and removing residual toner on the recording medium after transfer are unnecessary. As a result, the entire recording process is simplified, and the device configuration is simplified and has the advantage of being miniaturized. In addition, residual toner on the recording medium after transfer is reused without being removed by cleaning, which has the secondary advantage of greatly reducing loss of toner, which is a developing material. This is extremely advantageous when applied to an electro-recording type image recording device.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram for explaining a conventional electrophotographic image recording device, FIG. 2 is a schematic diagram showing an embodiment of the image recording device according to the present invention, and FIG. Figure 4 is a partially enlarged schematic diagram of the one-component magnetic toner developing machine shown in Figure 2.
FIG. 3 is a partially enlarged schematic diagram of the transfer electrode portion shown in the figure. In the drawing, 21 is a recording body, 21a is a belt-shaped transparent insulator, 21b is a transparent conductive layer, 21c is a photoconductive layer, 22
23 is a one-component magnetic toner developing device, 23 is a power source for applying a developing bias voltage, 24 is a recording medium, 25 is a transfer electrode, 26 is a power source for applying a transfer voltage, 27 is a light irradiation unit, and 28 is a fixing device. Figure 1 Figure 2 F1 Figure 3 Procedural amendment (Dear Commissioner of the Ship's Patent Office 1, Indication of the case, Patent Application No. 12285 of 1982, 2, Name of the invention Image recording device 3, Person making the amendment Case and Relationship Patent applicant address: 1015 Kamiodanaka, Nakahara-ku, Yozaki City, Kanagawa Prefecture (
522) Name Fujitsu Ltd. Representative Takuma Yamamoto 4, Agent Postal code 211 1 5, Date of amendment order None) +11 Corrected "on the front side," on page 2, line 15 of the specification, to "on the front side." do. (2) [Uniformly charged] on page 2, lines 16-17. " is corrected to "uniformly charged." (3) "Corresponding negative exposure" on page 2, lines 18-19.
is corrected as "corresponding exposure". (4) "Frictionally charged" in line 1 of page 3 of the specification is corrected to "charged." (5) "As a result, the entire recording process" on page 8, lines 15-16 of the specification is corrected to "as a result, the entire recording process."that's all

Claims (1)

[Claims] a recording body in which a transparent conductive layer and a photoconductive layer are laminated; a toner developing means for uniformly forming a single layer of charged toner on the recording body;
The toner image transfer means is composed of a toner image transfer means having a transfer electrode placed on the side of the recording medium and a light irradiation part on the back side of the recording body, sandwiching the recording medium with the recording medium placed on one layer of charged toner, and disposing the toner image transfer means facing each other. A voltage having the same polarity as that of the charged toner is applied to the transfer electrode of the image transfer means, and a light irradiation section irradiates light corresponding to an image pattern onto the recording medium that moves along the recording medium. What is claimed is: 1. An image recording apparatus comprising: electrostatically transferring one layer of charged toner onto a recording medium; and further fixing the toner image formed on the recording medium by a fixing means.