JPH0139111B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous processing method using an intermittent processing means, such as a discharge fixing device in an electrophotographic printer, which uses a discharge lamp to transfer toner transferred onto a running paper. The present invention relates to a continuous processing method, such as when partially intermittent fixing is performed, such as when toner is continuously fixed on a running paper by controlling the discharge order of a plurality of discharge lamps.

For example, in an electrophotographic printer, a developing process is performed to attach toner to a latent image formed on a photosensitive drum, the developed toner is transferred to a moving sheet of paper by a transfer section, and then this sheet of paper is irradiated with a flash lamp. to fix the toner on the paper.

In this case, as shown in FIG. 1, the flash lamp 1 is continuously flashed to
There is no problem if the toner transferred thereon can be continuously fixed. However, since the flash lamp 1 is a discharge lamp, it is impossible to turn it on continuously. Therefore, if the flash lamp 1 is controlled so that the fixing area A of the traveling paper exists continuously as shown in FIG. 2A, the fixing area A ₁ will be fixed as shown in FIG. ,A ₂ ,
This means that A ₃ , A ₄ . . . can be continuously fixed on the paper 2. However, since a large current momentarily flows through the flash lamp 1 when it is discharged, the power supply section 3 is controlled to charge the capacitor 4 and discharge the charge in the capacitor 4, as shown in FIG. 2C. . Note that an AC power source 5 is connected to this power source section 3, and the AC power source 5 is rectified by the power source section 3 to charge the capacitor 4. However, as shown in FIG. 2B, if the flash lamp 1 is to be discharged continuously in a short period of time, the charging time of the capacitor 4 must be shortened accordingly, and for this purpose, the power supply must be A large-capacity part 3 is required.

Therefore, in order to use a small capacity power supply, multiple flash lamps were installed as shown in Figure 3.
F ₁ , F ₂ , and F ₃ are arranged, and a capacitor (not shown) is connected to each of them. Then, at time _t1 , the flash lamp _F1 is first discharged to perform the fixing process on the area _a1 of the paper 2. Next, at time _t2 when the paper 2 has traveled the length l of the area _a1 , the flash lamp _F2 is discharged. Then, the time t ₃ when paper 2 has traveled further by l
The flash lamp _F3 is discharged and the area _a3 is fixed. Then, at times t ₄ , t ₅ ,
By repeating t _{6 .} . . , the paper 2 can be continuously fixed. Moreover, at this time, since there is some time between the discharge of the flash lamp and the next discharge, each discharge capacitor can be charged using a small-capacity power supply section.

However, in this method as shown in Fig. 3, it is necessary to arrange the flash lamps F ₁ to _{F 3 at} a distance _of l from each other. The disadvantage is that it requires a large installation area.

Therefore, in order to solve this problem, the present invention has been developed by arranging intermittent processing devices such as flash lamps in a mutually fixed manner and operating them one after another, thereby processing the workpiece while it is traveling. It is an object of the present invention to provide a continuous processing method using an intermittent processing means that can process continuously. For this purpose, in the continuous processing method using the intermittent processing means of the present invention, 2n pieces (n is an even number of 2 or more) are arranged continuously in the direction of movement of the object and are subjected to intermittent processing.
The 2n intermittent processing means include first and second intermittent processing means groups constituted by n intermittent processing means equally divided into two, and the first group (the (backward side relative to the direction of travel)
The intermittent processing means are operated in order from the first group (the one located on the forward direction side), and after the operation of all the intermittent processing means belonging to the first group is completed, the second group (the one located on the leading side with respect to the traveling direction) is operated. ) is characterized in that the intermittent processing means are operated in order from the beginning, thereby making it possible to continuously process the object being moved.

Before describing the present invention in detail based on embodiments, the principle of operation of the present invention will be briefly explained based on FIG. 9.

In the present invention, the flash lamps F ₁ ′, F ₂ ′, F ₃ ′,
F ₄ ′, F ₅ ′, F ₆ ′, F ₇ ′, and F ₈ ′ are arranged in two groups in close contact with each other as shown in FIG. 9, and the paper 2 is moved from left to right as shown by the arrow. and flash lamp
The discharge order of F ₁ ′ to F ₈ ′ is F ₁ ′, F ₂ ′, F ₃ ′, F ₄ ′, F ₅ ′
，
The order is F ₆ ′, F ₇ ′, and F ₈ ′. When the leading area p 1 ' next to the leading area p ₅ ' of paper 2 moves below the flash lamp F ₁ ' at time t ₁ , the flash lamp F _{1 '} is first discharged to move this leading area. Fix p ₁ ′. Then, at time _t2 , when the leading area _p1 moves to the outside of the flash lamp _F1 ', the flash lamp _F2 ' is discharged, and the area _p2 ' is subjected to the fixing process. Then, at time _t3, when the area _p2 ' moves below the flash lamp _F1 ', the flash lamp _F3 ' is discharged, the area _p3 ' is fixed, and at the time _t4 , the area _p3 ' is When moving below the flash lamp F ₂ ′, the flash lamp F ₄ ′ is discharged to fix the area p ₄ ′.

At time t ₅ , the leading region p ₅ ′ is a flash ramp.
Since it moves below F ₅ ', the flash lamp F ₅ ' is discharged at this time to fix the area p ₅ '. In this way, by sequentially discharging the flash lamps F ₆ ′, F ₇ ′, and F 8 ′ at times t ₆ , t ₇ , and t ₈ , the areas p ₆ ′, p ₇ ′, and _{p 8 ′} are sequentially discharged. It is fixed. By repeating this process, the paper 2 can be processed continuously, and the flash lamps F ₁ ′ to F ₄ ′ and F ₅ ′ to _{F 8} ′ can be arranged in close contact with each other. .

Next, one embodiment of the present invention will be described based on FIGS. 4 to 8.

FIG. 4 is a configuration diagram of an embodiment of the present invention, FIG. 5 is a time chart explaining its operation, FIG. 6 is a paper moving distance detection circuit, FIG. 7 is a light emission order control circuit and a light emission control circuit, and FIG. The figure shows a charging order control circuit.

In the figure, 5-0, 5-1...5-N are light emitting parts, and each light emitting part includes a power supply part 6, a flash lamp 7, a capacitor 8, a current adjustment coil 9, a trigger coil 10, a pulse A transformer 11 etc. are provided.

Reference numeral 12 denotes a first paper movement distance detection circuit, 13 a light emission order control circuit, 14 a paper movement distance second detection circuit, 15 a charging order control circuit, and 16 a light emission control circuit.

The paper moving distance first detection circuit 12 detects the moving distance of the paper, and as shown in FIG. 6A,
JK flip-flop (hereinafter referred to as FF) 17-0 to 17-n, preset circuit 18-0 to 18-
n, selector gate 19, initial value setter 20,
Setting device 21, pulse generation circuit 22, inverter 2
3. It is composed of an AND circuit 24 and OR circuits 25-0 to 25-n. The preset circuit 18-0 is constituted by OR circuits 26, 27 and an inverter 28, and the other preset circuits 18-1 to 18-n are also constituted by the preset circuit 18.
- It has the same configuration as 0.

JKFF17-0 to 17-n constitute a counter, and are set by the initial value setter 20.
It operates to count paper feed pulses from a paper feed code plate (not shown) to count the time from reset time T ₀ to charge start time T ₁ shown in FIG. It is set to count the time it takes to travel the distance of one lamp.

Further, the selector gate 19 outputs the set value of the initial value setter 20 when "0" is applied from the inverter 23, and outputs the set value of the setter 21 when "1" is applied from the inverter 23. It is.

A paper feed pulse transmitted from a paper feed code board (not shown) is applied to the OR circuit 25-0 connected to the clock terminal T of JKFF17-0, and based on this, JKFF17-0 to 17-n perform counting operations. is controlled to do so. The paper feed pulse transmitted from this paper feed code board is
For example, it is determined that one sheet of paper is output every time a sheet of paper is transported a distance of several tenths of an inch.

The second paper movement distance detection circuit 14 also detects the movement distance of the paper, and is configured similarly to the first paper movement distance detection circuit 12.

Next, the paper movement distance first detection circuit 1 shown in FIG.
The operation of No. 2 will be explained with reference to FIG.

As shown in FIG. 5, after the reset signal is applied, first calculate the number of paper feed pulses generated based on the paper movement distance during the charging time T ₀ for the charging circuit for the flash lamp F ₁ that discharges for the first time. The initial value is set in the setting device 20, and the number of paper feed pulses generated during the time it takes for the paper to move the distance of one flash lamp is set in the setting device 21. When the reset signal "1" shown in FIG. At this time, "1" is output from the Q terminal of JKFF17-n, and a pulse is output from the pulse generation circuit 22, so this pulse passes through OR circuits 25-0 to 25-n to each JKFF1.
When applied to 7-0 to 17-n, it is output from the selector gate 19 and sent to each preset circuit 18-n.
These JKFFs 17-0 to 17-n are set according to the initial values transmitted to JKFFs 0 to 18-n. Then, as the paper is transferred, a paper feed pulse shown in FIG. 5 is sent to the OR circuit 25 as an input signal.
-0, so when this paper feed pulse is transmitted by the number set in the initial value setter 20 after time _T0 , these JKFF17-0 to 17-
The contents of the counter configured by n exceeds 0,
As shown in FIG. 6D, the counter will output "0". At this time, the Q terminal of JKFF17-n outputs "0", so the pulse generation circuit 22 outputs "1" and the OR circuits 25-0 to 2
This is applied to JKFF17-0 to 17-n via 5-n. Prior to this, selector gate 19
Since "1" is applied from the inverter 23, the value set by the setter 21 is outputted, and the output pulse of the pulse generating circuit 22 causes the JKFF17 to change to the value set in the setter 21.
-0 to 17-n will be set. After time _T1 has elapsed, "0" is output again from the Q terminal of JKFF17-n. This results in
JKFF 17-0 to 17-n are again set to the values set in the setter 21 as described above, and the same operation is performed.

Further, the light emission order control circuit 13 includes light emitting units 5-0,
5-1...5-N, and the charging order control circuit 15 controls the light emitting order of the light emitting parts 5-0, 5-N.
1...5-N, and the light emission control circuit 16 controls the charging order in the light emission units 5-0, 5-1...
It generates a trigger control signal for applying a trigger pulse to the 5-N flash lamp.

Here, the light emission order control circuit 13 is composed of a preset circuit 29, a counter 30 and a decoder 31, as shown in FIG.
-0, 33-1, 33-2...33-N. The counter 30 sequentially outputs 1 to N+1, and when the counter 30 outputs "1", the decoder 31 decodes this and sends it to the AND circuit 3.
When the counter 30 outputs 1, the decoder 31 decodes this and outputs 1 to the AND circuit 33-1, and the counter 30 outputs N+1 in the same manner. When this occurs, the decoder decodes this and outputs "1" to the AND circuit 33-N. Therefore, the time tg ₀ in FIG.
When the output signal from the paper movement distance second detection circuit 14 in FIG. _{4 is applied to tg 1} ..., the trigger generation circuit 3
2 outputs a trigger pulse in response to this. As a result, the counter 30 performs a counting operation, 1, 2...
In response to this, the decoder 31 sequentially outputs "1" to the AND circuits 33-0, 33-1, . . . , and "1" from the AND circuits 33-0, 33-1, . At this time, AND circuit 33-0
The output signal "1" turns on the excitation circuit for the pulse transformer 11 of the light emitting section 5-0, so the pulse generated thereby is applied to the trigger coil 10, and the flash lamp 7 is instantaneously discharged.
Similarly, when "1" is output from the AND circuits 33-1...33-N, the light emitting section 5
-1...5-N flash lamp discharges.

The charging order control circuit 15 includes light emitting units 5-0, 5-
1...5-N, and as shown in FIG. Circuit 39-
0~39-N, flip-flop (hereinafter referred to as FF) 4
0-0 to 40-N, a delay circuit 41, and the like.

Here, the counter 35 indicates the time in FIG.
Each time the output signal transmitted from the paper moving distance first detection circuit 12 is applied at t ₀ , t 1 . _. . , the counter 35 counts 1, 2 . When counted sequentially,
Accordingly, AND circuits 38-0, 38-1...3
8-N sequentially output "1". Second
Similarly, when the counter 35 sequentially counts 1, 2...N+1, the decoder 37 sequentially outputs "1" to the AND circuits 39-0, 39-1...39-N accordingly. Since the count value of the counter 35 is transmitted via the delay circuit 41 with a delay of approximately the charging time of the capacitor, "1" is sequentially output from the second decoder 37 at times Ttg ₀ , tg ₁ . . . in FIG. will be done. When the AND circuit 38-0 outputs "1",
FF 40-0 is set and charging of capacitor 8 of issuing unit 5-0 is started. Also, when "1" is output from the AND circuit 39-0, the FF40
-0 is reset and the charging control ends.

Next, the operation shown in FIG. 4 will be explained with reference to FIG. 5.

When paper is supplied to an electrophotographic printer (not shown), a reset signal is sent. The number of paper feed pulses sent from the paper feed code board during charging start time _T0 of the capacitor for fixing this paper is set in the initial setting device of the paper movement distance first detection circuit 12. The number of paper feed pulses sent out from the paper feed code board during the time TG during which the paper is transferred to the fixing section is set in the initial setting device of the paper movement distance second detection circuit 14. The number of paper feed pulses sent from the paper feed code board while the paper is transferred a distance equivalent to one flash lamp is determined by the settings of the first paper movement distance detection circuit 12 and the second paper movement distance detection circuit 14. It is set in the container.

Therefore, when time T ₀ has elapsed since the paper was transferred, an output signal is sent from _the paper movement distance first detection circuit 12 to the charging order control circuit 15 at time t 0, and the capacitor 8 of the light emitting unit 5-0 is charged. The operation begins. Then, at time t ₁ after time T ₁ has elapsed from time t ₀ , charging operations of the light emitting units 5-1 are sequentially started.

Then, there is a time tg 0 when the paper onto which the toner has been transferred from the photosensitive drum (not shown) is transferred under the flash lamp 7 (e.g., corresponding to the flash lamp F ₁ ' in FIG. 9) of the light emitting section _5-0. , the paper movement distance second detection circuit 14 generates an output signal, the light emission control circuit 16 operates, and the trigger coil 10
A trigger pulse is applied to flash lamp 7.
is discharged, and the toner is fixed on the paper. In this way, the light emitting parts 5-0, 5-1...5-
By sequentially discharging N in a predetermined order and at predetermined intervals as explained with reference to FIG. 9, toner can be continuously fixed on the paper.

Thereby, as shown in FIG. 9, processing can be performed using an even number of flash lamps.
It is sufficient to provide an interval of one flash lamp between the group of flash lamps F ₁ ′ to F ₄ ′ and the group of flash lamps F ₅ ′ to F ₈ ′. As a result, the areas p ₁ ' to _{p 8} ' are sequentially fixed by discharging the flash lamps F ₁ ' to F ₈ ' in that order at times t ₁ , t ₂ . Then, at time _t9 , the flash lamp _F1 ' is discharged again, and the same process is repeated to remove the paper 2.
can be processed continuously.

Note that although the above description has been made with respect to a printing apparatus such as an electrophotographic printer, the present invention is of course not limited to this, and for example, a moving object may be intermittently irradiated, heating, cooling,
It can also be used in processing equipment that performs welding, spraying, painting, and other intermittent processing.

As explained above, according to the present invention, an even number or an even number of sets of devices that intermittently process moving objects are used, and by leaving a gap for one or one group in the middle, half of the moving objects are closely lined up. Intermittent and continuous processing is possible with a small capacity power source, and the installation space can be saved.

[Brief explanation of drawings]

1 and 2 are explanatory diagrams of the fixing process, FIG. 3 is an explanatory diagram when multiple flash lamps are used, FIG. 4 is a configuration diagram of an embodiment of the present invention, and FIG. 5 is an explanatory diagram of the fixing process. FIG. 6 is an explanatory diagram of the paper moving distance detection circuit, FIG. 7 is a light emission order control circuit and a light emission control circuit, FIG. 8 is a charging order control circuit, and FIG. 9 is an explanatory diagram of the operation of the present invention. be. In the figure, 1 is a flash lamp, 2 is paper, 3 is a power supply unit, 4 is a capacitor, 5-0, 5-1...5-
N is a light emitting part, 6 is a power supply part, 7 is a flash lamp, 8 is a capacitor, 9 is a current adjustment coil, 1
0 is the trigger coil, 11 is the pulse transformer, 1
2 is a paper movement distance first detection circuit, 13 is a light emission order control circuit, 14 is a paper movement distance second detection circuit, 15 is a charging order control circuit, 16 is a light emission control circuit, 17-
0,17-1...17-n is JK flip-flop,
18-0, 18-1...18-N are preset circuits, 19 is a selector gate, 20 is an initial value setter, 21 is a setting device, 22 is a pulse generation circuit, 23
is an inverter, 24 is an AND circuit, 25-0,2
5-1...25-n is an OR circuit, 26, 27 are OR circuits, 28 is an inverter, 29 is a preset circuit, 30 is a counter, 31 is a decoder, 32 is a trigger generation circuit, 33-0, 33-1...33 -N is an AND circuit, 34 is a preset circuit, 35 is a counter, 36 is a first decoder, 37 is a second decoder, 38-0, 38-1...38-N and 39-
0,39-1...39-N is an AND circuit, 40-
0,40-1...40-N is flip-flop, 4
1 indicates a delay circuit, respectively.

Claims (1)

[Scope of Claims] 1. 2n (n is an even number of 2 or more) intermittent processing means for performing intermittent processing arranged continuously in the direction of movement of the object to be processed, wherein the 2n intermittent processing means are arranged evenly. It includes a first and a second intermittent processing means group constituted by n intermittent processing means divided into two, and the first group (on the rear side with respect to the traveling direction) is the first intermittent processing means (the After the operation of all the intermittent processing means belonging to the first group is completed, the second group (the one located on the leading side in the direction of travel) is operated in order.
A continuous processing method using intermittent processing means, characterized in that the intermittent processing means are operated in order from the beginning, thereby making it possible to continuously process the moving object. 2. The continuous processing method using the intermittent processing means according to claim 1, wherein the intermittent processing means is a flash lamp, and the object to be processed is printing paper.