JPS6348569A - Electrostatic recording method - Google Patents

Abstract

PURPOSE:To prevent forms and toner from being wasted by judging a trial printed toner image visually when a printed pattern is indistinct, correcting the printed pattern and performing trial printing again when the pattern needs to be corrected, and confirming the pattern is of desired size and the transferring and fixing the image on the form. CONSTITUTION:When trial printing is necessary (when the printed pattern is indistinct, a toner image based upon a seam part 32 is formed on an insulating recording body 31 at a recording part 10 and then compared visually with a print area marker to judge whether or not the size of the toner image needs to be corrected. When the result of the judgement indicates that the image needs to be corrected, the pattern of print data is corrected to the desired size and trial printing is carried out; and it is confirmed that the formed toner image is of the desired size and then the image is transferred to and fixed on the form 100 of corresponding size. Consequently, the best form size is selected to perform recording securely to the desired size.

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] The present invention provides an electrostatic recording device that performs printing by transferring a toner image formed on a belt-shaped insulating recording material onto paper and fixing the image. The purpose is to ensure efficient printing by selecting the optimal paper size for the paper.If the pattern of the print data is unknown, it is possible to print a trial print of the print data on an insulating recording medium. to form a toner image, visually judge it,
The purpose is achieved by selecting paper size or by correcting the print pattern.

[Industrial application field]

The present invention relates to an improvement in an electrostatic recording method using an electrostatic recording device.

An electrostatic recording device using a belt-shaped insulative recording medium has a recording section in the middle of the traveling path of the insulating recording medium, and a recording master and a magnetic toner developing machine that face each other with the insulating recording medium in between. It is equipped with Formation of a toner image on an insulating recording medium is performed by forming an image using the recording electrode and developing using a magnetic toner developing device, and the formed toner image is transferred onto a sheet of paper at a transfer section. Printing is completed by fixing this transferred toner image. After the transfer is completed, the magnetic toner remaining on the insulating recording medium has its charge removed by a static eliminator and is recovered by the magnetic force of the magnetic toner developing machine.

[Conventional technology]

FIG. 3 shows the main structure of a conventional electrostatic recording apparatus of this type, and FIG. 4 shows a procedure for forming a toner image in the recording section of the electrostatic recording apparatus. In the figure, 1 is an insulating recording medium, 2 is a recording electrode, 3 is a magnetic toner developer, 4 is a transfer roller, 5 is a fixing device, and 6A and 6B are corona static eliminators. The insulating recording medium 1 is passed between a driving roller 7 and driven rollers 8 and 9, and is driven by the driving roller 7 to travel in the direction of the arrow. The recording electrode 2 and the magnetic toner developing device 3 are opposed to each other with the insulating recording medium 1 in between in the recording section 10 between the rollers 7.8. The recording electrode 2 has a multi-stylus configuration in which a plurality of groups of electrode needles 11 are arranged in a line in a direction perpendicular to the paper plane of FIG. The reliable toner developing device 23 is provided with a rotating roller i3 inside a fixed cylindrical sleeve i2 (see FIG. It is configured by providing a counter electrode 14 exposed to a plurality of segments.Counter electrode 14
is located in the recording section 10 and faces the recording electrode 2.

When recording with an electrostatic recording device having such a configuration, magnetic toner 15 is transferred to the outer periphery of the cylindrical sleeve 12 by a transfer roller (not shown), and a voltage corresponding to an image signal is applied to the electrode needle 11. By selectively applying a voltage of opposite polarity to the counter electrode 14, the magnetic toner 15 is attached to the insulating recording medium 1 running in contact with the recording electrode 2, thereby forming a toner image. This will be explained in detail with reference to FIG. 4 as follows.

FIG. 4 shows an enlarged view of how magnetic toner adheres to the insulating recording medium and a toner image 16 is formed while a voltage is applied to the electrode needle 11. For example, when the insulating recording body 1 is traveling to the right as indicated by the arrow, the electrode needle 11
A voltage pulse V of opposite polarity is applied to the opposite type +i14, respectively.
, V2 is applied, an air discharge occurs in the minute gap between the electrode needle 11 and the insulating recording body 1, and the insulating recording body 1
A latent image charge 17 is formed on the surface of the electrode needle 11 side.

At the same time, charges of opposite polarity are injected into the toner at the tip of the magnetic brush 18 that has been carried onto the selected segment of the counter electrode 14, and are attracted to the Coulomb force of the latent image charges 17, causing the insulating recording medium 1 to be A toner image 16 is formed.

Note that an uneven layer having a predetermined height is formed on the surface of the insulating recording body 1 on the side of the electrode needle 11 in order to maintain a minute gap necessary for causing an air discharge.

The toner image thus formed on the insulating recording medium 1 is transferred to the paper 100 by the transfer roller 4 in the transfer section 19 along the insulating recording medium 1, and the transferred toner image is transferred to the fixing section 20. At this point, the image is fixed by the fixing device 5, and the recording is completed.

After the transfer is completed, the A body 1 continues to run, and the charge of the residual magnetic toner is erased in the static eliminating section 21.

In this case, alternating voltages having different phases are applied to the corona static eliminators 6A and 6B placed on both sides of the insulating recording medium 1, thereby erasing the charge of the residual (n-type toner) and preventing the insulating recording medium from being recorded. The adhesion force of the magnetic toner to the body 1 is weakened.Then, the insulating recording body 1 further travels and reaches the recording section 10.
When reaching , the remaining magnetic toner is processed into magnetic toner developer A3.
It is collected by the magnetic force of the inner C-1 roller 13.

The above-mentioned recording process is repeated to output an image, but since such an electrostatic recording device performs the latent image formation process using the recording electrode and the development using the developing machine at the same time,
As an output device such as a facsimile, it has the advantage of a simple device configuration, small size, and low cost. Also, (n
Since untransferred toner can be collected in the developing machine without cleaning, maintenance is easy and the cost of consumables is low.

[Problem that the invention seeks to solve]

However, in this type of conventional electrostatic recording device, especially when the pattern of the print data is unknown, all the print data may not be recorded on the paper and may overflow.
I was wasting toner.

[Means for solving problems]

The present invention provides an electrostatic recording method that can solve the above-mentioned problems, and as a means for that purpose, the present invention performs test printing on an insulating recording medium to form a toner image corresponding to the printed content. visually determine whether or not the toner image should be corrected in terms of size. If correction is not necessary, the toner image is transferred and fixed onto paper of the corresponding size, and if correction is necessary, the toner image is transferred and fixed to the desired size. After correcting the printing pattern and performing another trial printing to confirm that the formed toner image fits within the desired size, the toner image is transferred and fixed onto paper of the corresponding size.

[Effect]

By employing the above-described recording method, it becomes possible to select the optimal paper size for print data and perform recording that reliably fits on the paper, so that paper and toner are not wasted.

〔Example〕

The present invention will now be described in detail with reference to FIGS. 1 and 2.

FIG. 1 is a flowchart showing the electrostatic recording method according to the present invention, and FIG. 2 is a perspective view showing the configuration (already necessary) of the main part of the electrostatic recording apparatus to which the present invention is applied. Insulating recording body, 2. 3. 4. 7, 8, and 9 are the same recording electrodes as conventional ones, a magnetic toner developer, a transfer roller, a drive roller, and a driven port, 10 and 19 are the same recording section and transfer. The surface of the insulating recording body 31 has a seam portion 3.
Print area markers 33 corresponding to each paper size based on 2. ．． 33□, 3L, 33. is entered.

The recording on the paper 100 by this electrostatic recording device is performed in the first
This is done according to the procedure shown in the figure.

When recording, first determine whether a trial separation is necessary.
If test printing is not necessary (for example, if the printing pattern is known), toner image formation, transfer, and fixing are performed to complete the recording, as shown on the right side of FIG.

If a test print is required (if the print pattern is unknown), the test print mode shown on the left side of FIG. 1 is adopted.

That is, the seam portion 3 is formed on the insulating recording body 31 by the recording section 10.
2 is used as a reference, and the acid toner image is visually compared with the printing area marker to determine whether the size of the toner image needs to be corrected or not. In this case, in order to enable visual judgment, the transfer roller 4 is retracted from the transfer position, and the transfer roller 4 and the corona static eliminator (corresponding to the corona static eliminators 6A and 6B in FIG. 3, (not shown in FIG. 2) is stopped. As a result of this judgment, if no correction is necessary, the process goes to the right column as shown by the arrow gland 34, and transfers and fixes to paper of the corresponding size (in this case, of course, the transfer roller 4 is moved to the transfer position). (At the same time, work is performed by applying voltage to the transfer roller 4 and the corona static eliminator)
End recording. As a result of the judgment, if correction is necessary, correct the pattern of the print data so that it fits within the desired size, perform another trial print, and confirm that the formed toner image fits within the desired size (no correction necessary). , transfer and fixing are performed on paper of the corresponding size using the same procedure as described above.

[Effects of the Invention] As described above, according to the present invention, when the printing pattern is unknown, the trial printing mode is adopted to determine the toner image by visually judging the toner image. In terms of size (
If it is necessary to correct the toner image, correct the pattern of the print data so that it fits within the desired size, perform a test print again, confirm that the formed toner image fits within the desired size, and then The image is transferred and fixed onto paper of the corresponding size. Therefore, it is possible to select the optimal paper size for the print data.
It is possible to eliminate waste of toner.

[Brief explanation of the drawing]

FIG. 1 shows an electrostatic diagram 1 of an embodiment of the present invention. FIG. 2 is a flowchart showing the six methods; FIG.
FIG. 3 is a front view showing the configuration of main parts of a conventional electrostatic recording device; FIG. 4 is an explanatory diagram of toner image formation procedures in the recording section of the electrostatic recording device shown in FIG. 3; In the figure, 2 is a recording electrode, 3 is a magnetic toner developer, 4 is a transfer roller, 10 is a recording section, 11 is an electrode needle, 14 is an opposite electrode, 15 is a magnetic toner, 1 is a transfer section, 31 is an insulation Sex record, 33. 33□, 33. ．． 33. is a print area marker, and 100 is paper. Figure 1 Figure 4

Claims (1)

[Scope of Claims] A toner image is formed on the insulating recording body by a recording electrode facing the insulating recording body and a magnetic toner developing device in a recording section through which the running belt-shaped insulating recording body passes. Next, in an electrostatic recording step in which the toner image is transferred onto paper using a transfer section along the insulating recording material and then fixed, a test printing is performed on the insulating recording material to form a toner image corresponding to the print data. visually determine whether or not the toner image should be corrected in terms of size. If correction is not necessary, the toner image is transferred and fixed onto paper of the corresponding size, and if correction is necessary, the toner image is transferred to the desired size. Electrostatic printing is characterized in that the printing pattern is corrected and a test print is performed again to confirm that the formed toner image is within the desired size, and then the toner image is transferred and fixed onto paper of the corresponding size. Recording method.