JPS6068357A - Information recording system - Google Patents

Abstract

PURPOSE:To prevent the deterioration of a photosensitive body and dissipate of power by starting electrostatic charge after print information is inputted. CONSTITUTION:Print information on every line is inputted to a main control part 2 through an interface 1 and stored in a storage device 5. Then, the rotation of the photosensitive drum 13 is started and the operation of an electrostatic charger 14 is also started. A cathode-ray tube 10 is exposed to the surface of the photosensitive body 13 by making a main scanning through an optical fiber according to a dot signal generated by a character signal generator 6 according to the input character information. The charger 14 is put in operation only when necessary, so the deterioration of the photosensitive drum 13 is reduced and a dissipate of power for charging is prevented. Further, the rotation of the photosensitive drum 13 is started after the print information is inputted, so wrong information when inputted is corrected before the rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an information recording system in an electrostatic recording device using, for example, an optical fiber tube.

[Technical background of the invention and its problems]

2. Description of the Related Art Recently, various electrostatic recording apparatuses using octical fiber tubes have been developed as recording apparatuses for sequentially recording, for example, one page of text on recording paper. This type of electrostatic recording device stores recorded information (text information) that is input continuously line by line, and reads out this stored recorded information in response to horizontal scanning of an electron beam of an optical fiber tube. ,
In response to this, a character signal is generated, which is exposed to a photosensitive drum as a photosensitive member through an optical fiber tube, and the image formed on the photosensitive drum is transferred onto recording paper.

By the way, in conventional devices, the photosensitive drum is constantly charged. For this reason, there have been problems in that the photosensitive drum deteriorates quickly, shortens its life, and consumes a large amount of charging power b.

[Purpose of the invention]

This invention was made based on the above circumstances,
The purpose is to provide an information recording method that can suppress deterioration of the photoreceptor and consumes less power.

[Summary of the invention]

In this invention, after predetermined recording information is stored in a storage device, a charger and a photosensitive drum are operated.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an electrostatic recording device using an octical fiber tube according to the present invention, where 1 is an interface for sending and receiving information signals, 2 is a main control unit (central processing unit), and 3 is a clock pulse. 4 is a program counter, 5 is a storage device, 6 is a character signal generator, 7 is a shift register, 8 is a video amplifier, and 9 is a horizontal deflection circuit.

The program counter 4 is connected to a clock pulse generator 3.
The main control unit 2 programs a predetermined value. Further, the storage section 5 stores input recorded information for each line, and has a storage capacity for one page of recorded information. On the other hand, 10 is an octical fiber tube (hereinafter simply referred to as OFT), 11 is the tube surface of OFT 10, and 12 is OFT.
10, a horizontal deflection coil; 13, a photosensitive drum; 14, a charger; 15, a developer; 16, a transfer charger; 17, a static eliminator; 18, a cleaning brush; 19, a cassette in which recording paper P is stored; 21 is a paper feed roller, and 21 is a fixing device.

Next, the operation of the electrostatic recording apparatus configured as described above will be explained. FIG. 2(,)(b) shows a case where, for example, the letters rAJ are recorded and displayed on the recording paper P, in which the solid line 23 indicates the sweep locus of OFT 10, and the broken line 24 indicates the retrace locus. . Further, it is assumed that the characters to be recorded and displayed are composed of, for example, a 5×7 dot matrix.

Now, when the character information to be recorded is input continuously line by line, it is received by the interface 1 and supplied to the main control section 2. The main control unit 2 causes the storage device 5 to sequentially store and arrange the input character information for each line. Then, when the photosensitive drum 13 starts rotating, the charger 14 operates at the same time, and the photosensitive surface of the photosensitive drum 13 is charged. This charged part is the tube surface 11 of 0FT10.
After passing through the OFT 10, horizontal scanning of the OFT 10 is started. That is, the main control unit 2 supplies a horizontal synchronizing signal to the horizontal deflection circuit 9 so as to match the rotational speed of the photosensitive drum 13 close to the tube surface 11 of the OFT I O, so that the horizontal deflection circuit 9 A deflection current is passed through the horizontal deflection coil 12.

When the OFT 10 starts horizontal scanning, the main controller 2
Of the character information stored line by line in the storage device 5, first, the dot signal of the first line of each character recorded on the first line of the recording paper P is generated by a character signal generator. 6 and supplies the dot signal of the first row to the shift register 7.

The shift register 7 converts the supplied dot signal into a serial signal and supplies it to the amplifier 8 in synchronization with the shift f pulse output from the counter 4. The amplifier 8 amplifies the supplied signal and applies it to the cathode of OFTIO as a video signal.

Thereby, the OFT 10 forms a latent image on the photosensitive drum 13 corresponding to the dot signal of the first line of the first character among the characters recorded on the first line. Next, the dot signal in the first row of the second character among the characters recorded in the first row is selected, and its latent image is formed in the same manner as described above.

After repeating this operation until all the latent images for the dot signals of the first line of each character recorded on the first line are formed, the electron beam of OFT 10 is blanked and the sweep starting point is again set. to be restored. When the photosensitive drum 13 comes to an appropriate position, OFTIO sweep is started again, and then the dot signal of the second line of the first character of each character recorded on the first line is Select and form its latent image.

6- Next, select the dot signal of the second line of the second character among the characters recorded on the first line, and form a latent image thereof. This operation is repeated in the second row of each character recorded in the first row.
This process is repeated until all the latent images for the dot signals in the row are formed. In the same way, all the dot signals on the 3rd line, 4th line, 7th line of each character recorded on the 1st line are swept, and the 7th line is When the sweep for the dot signals in the first row is completed, latent images for all the characters in the first row have been formed.

Furthermore, the second line and third line of the recording paper P...
A latent image is also formed for each character recorded in the same manner as described above. As a result, all of the character information for one page stored in the storage device 5 is recorded on the photosensitive drum 13 as a latent image. This is developed with a developing device 15, and a charging device 16 is used in a transfer section.
By transferring the image onto the recording paper P using the printer and fixing it using the fixing device 21, all recording and displaying on the recording paper P is completed.

FIGS. 2(a) and 2(b) show an example of characters obtained on the recording paper P in this manner.

Next, the display character enlargement/reduction method according to the present invention will be explained in detail using FIG. 1 and FIGS. 2(a) to (f). For example, if the characters shown in Figure 2 (a) are set to the minimum recordable character size, the characters in Figure 2 (,) and the characters in Figure 2 (b)
Let the size ratio of the same side of the characters be [3:4]. and,
The program counter 4 is programmed with a value of, for example, "1 to 16" by the main control unit 2 between the line spaces.

For example, when a value of "1" is programmed, the output frequency of the counter 4 (frequency of the shift pulse) is equal to the output frequency of the pulse generator 3, and when a value of "2" is programmed, the output frequency of the counter 4 is equal to the output frequency of the pulse generator 3. is pulse generator 3
When a value of "3" is programmed, it becomes "IA", and the same applies when a value of "4 to 16" is programmed. A dot signal corresponding to the number of dots in the horizontal direction in one character is supplied to the shift resolution staff during the character space, and is sent as a serial signal to the amplifier 8 in synchronization with the shift pulse output from the counter 4 as described above. is output to. Figure 2 (,) shows a character with the minimum size, and is the case when the value ``3'' is programmed into the counter 4, and Figure 2 (b) shows the case where the value ``4'' is programmed into the counter 4, for example. It is. In addition, Fig. 2(c) (,) is the same figure (&), respectively.
) (b) are the video signals during the second sweep, and Fig. 2 (d) and (f) are the video signals of the second sweep in (,) (b), respectively.
), and the time difference ta and tbO ratio between adjacent dot signals is (3:4
)It has become. As is clear from the above explanation, the horizontal dimension of the smallest character can be increased by varying the time between adjacent dot signals using the value programmed into the program counter 4. When set to 1, the horizontal dimension of the character is 4/'3 times, 5/3 times, 6/'
Characters multiplied by 3 times, . . ., 16/3 are obtained.

On the other hand, characters are enlarged in the vertical direction as follows. That is, since the photosensitive drum 13 rotates at a constant speed, by appropriately selecting the time 9- from the start of one sweep to the start of the next sweep, the vertical direction of the character can be adjusted. can be expanded. The time from the start of a sweep until the start of the next sweep is in the ratio of [3:4':I in the case of Figure 2 (&) and the case of Figure 2 (b), OFT1
The zero electron beam remains blanked at the sweep start point until the start of the sweep. These controls are
This is done by changing the period of the horizontal synchronizing signal to the horizontal deflection circuit 9 in the main control section 2 according to the value programmed into the counter 4. In this way, the horizontal dimension of the character is determined by the value programmed into the program counter 4,
The vertical dimension is determined by appropriately setting the time from the start of one sweep to the start of the next sweep.

In the above explanation example, in order to simplify the explanation, the case where the dot configuration per character of the character signal generator 6 is 5 x 7 has been explained, but in reality, in order to improve the character quality, for example, 24 x 24 or A 32x32 dot configuration is used.

10- Therefore, adjacent dots are recorded continuously without any gaps. In this case, when the dimensions on the same side of the minimum size character are enlarged by 2 times, 3 times, . . . , the contents of the shift register 7 that outputs the video signal are as follows.
If output is performed continuously, there will be no gap between adjacent rows of dots, but the time from the start of one sweep to the start of the next sweep will be longer, and the spot diameter of the light at one dot of OFT 10 will be smaller. Since the dots are constant, gaps will occur between adjacent dot lines. Therefore, if the vertical or horizontal dimension of the minimum size character is 1, then the vertical or horizontal dimension is 2.
For characters with dimensions that are integral multiples, such as double, triple, etc.,
A sweep with the same video signal content is continuously repeated a number of times that is a multiple of the number of times. At this time, the spot diameter of the light of the OFT 10 is set so that there is no gap between the rows of adjacent dots. When recording characters with dimensions other than integral multiples, the time from the start of a sweep to the start of the next sweep is appropriately set as explained in the example above. Also, when the size of the character is 1 times or more but less than 2 times, each dot is swept once, and the time from the start of the sweep until the start of the next sweep is, for example, 4A for the minimum size. If the value is 2 times or more but less than 3 times, the sweep is repeated twice per dot and the video signal content is the same (the sweep is repeated continuously). The time from start to start of the next sweep is, for example, 3A times, 4/3 times, and 5/4 times the time of the minimum dimension. Furthermore, the same shall apply in the case of 3 times or more but less than 4 times, 4 times or more but less than 5 times, etc. In this way, the horizontal dimension of the character is determined by the value programmed into the program counter 4, and the vertical dimension is determined by the number of times the video signal repeats the same content in succession, and the sweep at that time. This is determined by how much time is set from the start of the sweep until the start of the next sweep. This allows the size of the characters to be selected with some degree of freedom.

The above explanations are all for enlarging characters, but
Characters can also be reduced in size easily by the same means as described above. Therefore, the explanation thereof will be omitted.

In the above-mentioned embodiments, a case has been described in which the present invention is applied to an electrostatic recording device using an OFT, but the present invention is not limited thereto, and the present invention can be similarly applied to, for example, an electrostatic recording device using a laser beam.

According to the above embodiment, after predetermined recording information is stored in the storage device 5, the charger 14. The photosensitive drum 13 is driven. Therefore, compared to the case where the photosensitive drum 13 is constantly charged, deterioration of the photosensitive drum 13 can be suppressed, and the life of the photosensitive drum 13 can be extended.

In addition, since charging is not performed constantly, power consumption is low.

Furthermore, since the charger 14 and the photosensitive drum 13 are driven after recording the recording information, if there is an error in inputting the recording information, it is possible to input it again before electrostatic recording starts. It is possible to prevent wasteful recording of information that has been lost.

13- [Effects of the Invention] As described in detail above, according to the present invention, it is possible to suppress deterioration of a photoreceptor and to provide an information recording method that consumes less power.

[Brief explanation of drawings]

The drawings are for explaining one embodiment of the present invention.
The figure is a schematic configuration diagram of, for example, an electrostatic recording device according to the present invention, and FIG. 2≠! True is a diagram showing characters recorded and displayed on a recording paper, a sweep locus at that time, and a video signal. 2... Main control unit, 3... Clock pulse generator, 5
...Storage device, 6...Character signal generator, 7...Shift register, 8...Video amplifier, 9...Horizontal deflection circuit, 10...Onotic fiber tube, 13...
- Photosensitive drum, 14... Charger, P... Recording paper. Applicant's agent Patent attorney Takehiko Suzue 14-

Claims (1)

[Scope of Claims] 1) A rotationally driven photoreceptor, charging means for charging the photoreceptor, means for forming a latent image on the photoreceptor by scanning, and an image formed on the photoreceptor. The charging device is characterized by comprising means for transferring the information to a recording medium, a storage device for storing recorded information, and a control means for driving the charging means in a state in which storage of predetermined recorded information in the storage device is completed. Information recording method. 2) Transferring the image formed on the photoreceptor to a recording medium, including a rotationally driven photoreceptor, charging means for charging the photoreceptor, and means for forming a latent image on the photoreceptor by scanning. an information recording device comprising a storage device for storing recorded information, and a control device for driving the photoreceptor and charging device in a state in which storage of predetermined recorded information in the storage device is completed. method.