JPH0367833A - System for controlling paper discharged from blank feeding mechanism in making power supply - Google Patents

Abstract

PURPOSE:To expell surely accurately remaining papers in power supply making from a paper feeding mechanism by providing a paper feeding mechanism controlling unit for discharging remaining papers from a paper discharging port by activating a paper feeding roller drive unit when the presence of the remaining papers is judged. CONSTITUTION:A blank feeding mechanism controlling unit 13 compares respective count numbers held by a count number holding unit 12 with a constant by which a physical distance between a blank detecting sensor 8 and paper discharge port 7 is converted to the pulse number of a blank feeding motor. When the remaining blanks are judged to be present a starting signal is sent to a blank feeding roller drive unit 14. Next, when said unit 14, upon receiving the starting signal from said control unit 13, drives a paper feeding roller 6 in a blank feeding mechanism 1 to expell papers remaining in the blank feeding mechanism 1 from a paper expelling port 7.

Description

[Detailed Description of the Invention] [Summary] A method for ejecting remaining paper from the paper feed mechanism when power is turned on of a device equipped with a paper feed mechanism consisting of a paper intake port, a paper guide, a paper feed roller, and a paper discharge port. Regarding the control method.

The purpose is to ensure that remaining paper can be ejected from the paper feed mechanism reliably and accurately.

In a control method for ejecting remaining paper from the paper feed mechanism when power is turned on for a device equipped with a paper feed mechanism consisting of a paper intake port, paper guide, paper feed roller, and paper output port, the remaining paper is removed from the paper near the paper intake port. In addition to providing a detection sensor, a paper detection circuit, a pulse number counting section,
A count holding section, a paper feeding mechanism control section, and a paper feeding roller driving section are provided, and the paper detection circuit sends a signal to that effect when paper is present on the paper detection sensor.

The pulse count section calculates the paper feed count by counting the pulses generated by the paper feed motor drive pulse generator after the leading edge of the paper passes over the paper detection sensor, based on the signal from the paper detection circuit, and calculates the paper feed count. The pulse after the trailing edge passes over the paper detection sensor is counted to determine the paper out count, and the count holding section non-volatilely holds the paper feed count and paper out count found by the pulse number counting section. The paper feed mechanism control unit compares each count held by the two-force count number holding unit with a constant obtained by converting the physical distance into the number of pulses of the paper feed motor, and if it is determined that there is remaining paper, the paper feed mechanism is The roller drive unit is started and the remaining paper is discharged from the paper discharge port at the bottom of the tank.

[Industrial application field]

The present invention provides a method for controlling paper ejection from a paper feed mechanism when power is turned on, particularly when power is turned on for a device equipped with a paper feed mechanism such as a printer device or an image scanner device.
The present invention relates to a control method for ejecting remaining paper from a paper feed mechanism.

[Conventional technology]

FIG. 6 is a diagram showing a conventional example.

This conventional example shows a control method for ejecting remaining paper from a paper feed mechanism in a dot printer when the power is turned on.

In FIG. 6, 61 is a paper feed mechanism, 62 is a paper suction port, 63 is a platen, and 64 is a print head.

65 is a paper guide, 66 is a paper feed roller, 67 is a paper discharge port, 68 is a paper detection sensor provided near the paper intake port 62, 69 is a paper, and 70 is a paper detecting sensor that detects the output of the paper detection sensor 68 to remove the paper. A paper detection circuit that sends a signal when paper 69 is present on the detection sensor 68; and 71 a paper feed mechanism that controls whether or not to start the paper feed roller drive unit based on the signal that the paper detection circuit 70 sends. The control unit 72 is a paper feed drive unit that drives the paper feed roller 66 in response to an activation signal from the paper feed mechanism control unit 71.

The conventional method will be explained below with reference to FIG.

■Turn on the power to the printer device.

Paper detection circuit 70 detects the output of paper detection sensor 68 and issues a signal when paper 69 is present on paper detection sensor 68.

■The paper feed mechanism control unit 71 receives a signal from the paper detection circuit 70 indicating that the paper 69 is present on the paper detection sensor 68.
Determine whether the message is being sent from. Thereby, it is determined whether or not the paper 69 is present on the paper detection sensor 68.

If NO, proceed to ■.

If YES, the primary process (2) is executed.

■The paper feed mechanism control section 71 is a paper feed roller drive section 7.
Sends a start signal to 2.

The paper feed roller drive section 72 receives the activation signal.

By driving the paper feed roller 66, the paper remaining in the paper feed mechanism 61 is ejected from the paper ejection port 67 to the outside.

■Proceed to the next process as a normal printer device.

[Problem to be solved by the invention]

In the conventional method, if there is no paper on the paper detection sensor when the power is turned on, the remaining paper is determined to be fried and the paper ejection operation is not performed. If there is residual paper near the exit, there is a problem in that it may cause problems such as paper jams.

The present invention solves this problem and provides paper ejection control from the paper feed mechanism when the power is turned on, thereby making it possible to reliably and accurately eject the paper remaining in the device from the paper feed mechanism when the power is turned on. An object of the present invention is to provide a control method for ejecting remaining paper from a paper feeding mechanism when the power of a device equipped with a paper feeding mechanism, such as a printer device or an image scanner device, is turned on.

(Means for Solving the Problems) In order to achieve the object stated in (2), the paper ejection control method from the paper feed mechanism when the power is turned on according to the present invention includes a paper suction port, a paper guide, a paper feed roller, and a paper ejection mechanism. When powering on a device with a paper feed mechanism consisting of an outlet,
In the control method for discharging the remaining paper from the paper feed mechanism, a paper detection sensor is provided near the paper intake port, and a paper detection circuit, a pulse number counting section, a count number holding section, a paper feeding mechanism control section, and a paper feeding roller are provided. A drive unit is provided, and the paper detection circuit sends a signal to that effect when paper is present on the paper detection sensor, and the pulse number counting unit generates paper feed motor drive pulses based on the signal from the paper detection circuit. By counting the drive pulses generated by the device, the number of pulses after the leading edge of the paper passes over the paper detection sensor is counted to obtain the paper feed count, and the number of pulses after the trailing edge of the paper passes over the paper detection sensor is determined. The count number holding section non-volatilely holds the paper feed count number and the paper out count number obtained by the pulse number counting section, and the paper feed mechanism control section holds the count number. - Each count is compared with a constant that converts the physical distance into the number of pulses of the paper feed motor, and if it is determined that there is remaining paper, the paper feed roller drive unit is activated to remove the remaining paper. The paper is configured to be ejected from the paper ejection port.

FIG. 1 is a diagram showing the principle of the present invention.

This figure provides a detailed explanation of the present invention using a dot printer as an example.

In the figure, 1 is a paper feed mechanism, 2 is a paper suction port, and 3 is a paper feed mechanism.
is a platen, 4 is a print head, 5 is a paper guide, 6 is a paper feed roller, 7 is a paper discharge port 8 is a paper detection sensor, 9
10 is a paper detection circuit, 11 is a pulse number counting section, 12 is a count number holding section, 13 is a paper feeding mechanism control section, 14 is a paper feeding roller driving section, and 15 is a paper feeding motor drive pulse generator.

The paper feed mechanism 1 includes a paper suction port 2. Platen 3° paper guide 5. It is composed of a paper feed roller 6 and a paper discharge port 7.

The paper detection circuit 10 detects the output of the paper detection sensor 8 and, when paper 9 is present on the paper detection sensor 8, sends a signal to that effect.

The pulse number 971 unit 11 counts the drive pulses generated by the paper feed motor drive pulse generator 15 based on the signal from the paper detection circuit 10, thereby detecting the paper 9.
The pulse after the leading edge of the paper 9 passes over the paper detection sensor 8 is counted to obtain the paper feed count, and the pulse after the trailing edge of the paper 9 passes the paper detection sensor 8 is counted to count 1 paper out. Find the number.

The count number holding unit 12 non-volatilely holds the paper feed count number and paper out count number determined by the pulse number 971 unit 11. for that.

It consists of EEPROM and RAM embedded in a battery.

The paper feed mechanism control unit 13 compares each count held by the count holding unit 12 with a constant obtained by converting the physical distance between the paper detection sensor 8 and the paper ejection port 7 into the number of pulses of the paper feed motor. When it is determined that there is remaining paper, an activation signal is sent to the paper feed port-ra drive section 14.

The paper feed roller drive unit 14 is connected to the paper feed mechanism control unit 13.
When it receives the activation signal from the printer, it drives the paper feed roller 6 that constitutes the paper feed mechanism 1.

The paper remaining in the paper feed mechanism l is discharged from the paper discharge port 7.

[For production]

A method of controlling paper ejection from a paper feed mechanism when power is turned on according to the present invention will be described with reference to FIG.

■Turn on the power to the printer device.

■The paper feed mechanism control unit 13 determines whether or not the out-of-paper count number among the counts held by the count holding unit 12 is greater than the ejection count number required for paper ejection from the paper detection sensor 8. . In other words, the paper out count is the number of pulses counted after the trailing edge of the paper 9 passes over the paper detection sensor 8, and the DI output count is the number of pulses after the trailing edge of the paper 9 passes over the paper detection sensor 8. Since this is the count number up to, it is determined whether or not there is any paper remaining between the paper detection sensor 8 and the paper discharge port 7.

If the result is YES, it is determined that there are no remaining sheets and the process proceeds to (2).

If NO, it is determined that there is a remaining paper and the next ■
Proceed to judgment.

(2) The paper feed mechanism control unit 13 checks the paper feed count among the counts held by the count holding unit 12, and determines whether the leading edge of the remaining paper is within the paper guide. This judgment is.

Specifically, the paper feed count obtained by counting the pulses after the leading edge of the paper 9 passes over the paper detection sensor 8 and the distance from the paper detection sensor 8 to the paper guide 5 are converted into the number of pulses of the paper feed motor. This is done by comparing with the given constant.

If the result is YES, the process (2) is executed.

If No, the process proceeds to the fifth step (2).

■Execute paper holding operation for remaining paper.

If the paper feed roller 6 is driven without performing this operation, problems such as a paper jam will occur in the paper guide 5. Therefore, the paper pressing operation for the remaining paper must be performed without fail.

■The paper feed mechanism control section 13 controls the paper feed roller drive section 1.
Sends a start signal to 4.

The paper feed roller drive section 14 that has received the activation signal drives the paper feed roller 6 to eject the remaining paper in the paper guide 5 to the outside from the paper ejection port 7.

■Proceed to the next process as a normal printer device.

Since the paper ejection control method from the paper feed mechanism when the power is turned on according to the present invention has the above-described procedure, the remaining paper can be reliably and accurately ejected from the paper feed mechanism when the power is turned on.

〔Example〕

FIG. 2 is a diagram showing a paper feeding mechanism according to an embodiment of the present invention.

This figure shows a paper feeding mechanism when the present invention is applied to a dot printer device with a double-sided printing mechanism.

In FIG. 2, 21 is a paper intake port, 22 is a paper detection sensor, 23 is a platen, 24 is a print head, 25 is a paper guide, and 26 is a paper feed roller.

27 is a paper discharge port, 28 is a path switching guide, and 29 is a stacker.

The paper feeding mechanism shown in FIG. 2 can support two-sided printing or one-sided printing. Namely.

i) In the case of double-sided printing, the paper is sucked in from the paper suction port 21 and guided onto the platen 23, printed by the print head 24, and then inserted into the lower part of the paper guide 25. The paper is then guided upward by the paper feed roller 26.

If the paper hits the path switching guide 28, but the left end of the three-path switching guide 28 is at the top as shown in FIG. You will be led to the top of 25. After that, place the platen 2 with the printed side facing down.
3, where the print head 24 prints on the back side. Paper that has been printed on the back side is stored in the paper suction port 21.
is discharged to the outside.

ii) For single-sided printing, place the left end of the path switching guide 28 downward and close to the large paper feed roller 26.

The paper is sucked in from the paper suction port 21 and guided onto the platen 23 , and after being printed by the print head 24 , the paper is inserted into the lower part of the paper guide 25 . The paper is then guided upward by five paper feed rollers 26.

Since the passage switching guide 28 has seven lengths as described above, the sheets pass over the one passage switching guide two days, are discharged to the outside from the paper discharge port 27, and are stacked on the stacker 29.

An example of a system configuration when the present invention is applied to a dot printer having the paper feeding mechanism shown in FIG. 2 is shown in FIG. 3 as an embodiment of the system configuration of the present invention.

In FIG. 3, 31 is a CPU, and 32 is a program storage R in which procedures for executing the method of the present invention are stored.
OM, 33 is a line buffer, 34 is a data storage RAM for temporarily storing detection data of the paper detection sensor and the number of pulses determined based on this detection data;
Reference numeral 35 corresponds to the count number holding unit 12 in FIG. 1, and is an EEPROM for non-volatilely storing various counts obtained by the CPU 31 according to the procedure of the present invention stored in the program storage ROM 32. Reference numeral 36 is a motor driver. ,3
7 is a hammer driver, 38 is a sensor driver, 39 is an interface, 40 is an address bus, 41 is a data bus, 42 is an interface cable, 43 is a main unit, 44 is a moke for driving the paper feed roller, and 45 is for performing line feed of the platen. 46 is a motor for moving the carrier, 47 is a solenoid for driving a path switching guide, 48 is a carrier, 49 is a print head attached to the carrier 48, 50 is an ink ribbon cassette, and 51 is a paper detection sensor. These are various sensors.

FIG. 4 is a diagram showing the operational flow of an embodiment of the present invention. Further, FIG. 5 is a diagram showing the state of paper in the paper feeding mechanism.

Using FIG. 4 and FIG. 5, two paper ejection control methods from the paper feeding mechanism at power-on according to the present invention in a dot printer device equipped with the paper feeding mechanism shown in FIG. 2 and having the system configuration shown in FIG. Explain the steps.

■Turn on the power to the printer device.

(2) It is determined whether or not the paper remained in the paper feed mechanism in a face-down state as shown in FIG. 5(a) when the power was turned off last time.

If YES, execute the process (2).

If NO, proceed to the judgment in ■.

(2) As shown in FIG. 5(a), the paper remaining in the paper feed mechanism with the paper facing down is discharged to the outside from the paper suction port by driving the paper feed roller.

After that, proceed to ■.

■Determine whether the out-of-paper count number is greater than the ejection force run I/number. In other words, the paper ripeness count is the value obtained by counting 6 pulses after the trailing edge of the paper passes the paper detection sensor, and the ejection count is the count from the paper detection sensor to the paper ejection port. □Determine whether or not paper remains between the paper detection sensor and paper ejection.

If YES, it is determined that the remaining paper does not exist.■
Proceed to.

If NO, it is determined that there is a remaining paper and the next
Proceed to judgment.

■Of each count, check the paper feed count,
Determine whether the leading edge of the remaining paper is within the paper guide. Specifically, this judgment is made by converting the paper feed count obtained by counting the pulses after the leading edge of the paper passes over the paper detection sensor and the distance from the paper detection sensor to the paper guide into the number of pulses of the paper feed motor. This is done by comparing with the given constant.

FIG. 5(b) shows a state in which the paper is in the paper guide, and FIG. 5(c) shows a state in which the paper is not in the paper guide.

If YES, execute the process (2).

If No, the process of the ninth order (2) is executed.

■Execute paper holding operation for remaining paper.

If you drive the paper feed roller without performing this operation,
A problem such as a paper jam occurs in the paper guide. Therefore, the paper pressing operation for the remaining paper must be performed without fail.

■Drive the paper feed roller to eject the remaining paper in the paper guide to the outside from the paper ejection port.

■Proceed to the next process as a normal printer device.

〔Effect of the invention〕

According to the present invention, remaining paper can be reliably and accurately ejected from the paper feeding mechanism when the power is turned on.

Furthermore, when the present invention is applied to a double-sided printing printer device,
Information on the front and back sides of the paper can also be stored.
It becomes possible to stack printed sheets without making a mistake in the page order.

[Brief explanation of drawings]

FIG. 1 shows the principle of the present invention. FIG. 2 shows a paper feeding mechanism according to an embodiment of the invention. FIG. 3 shows a system configuration according to an embodiment of the invention. FIG. 4 shows the operational flow of an embodiment of the present invention, and FIG. 5 shows the state of paper in the paper feed mechanism. FIG. 6 is a diagram showing a conventional example. In Figure 1, 1: paper feed mechanism 2: paper intake port 3 nib laten 4: print head 5: paper guide 6: paper feed roller 7: paper DF outlet 8: paper detection sensor 9: paper 10: paper detection circuit 11: pulse count Section 12: Count number holding section 13: Paper feeding mechanism control section 14: Paper feeding roller drive section

Claims (1)

[Claims] A paper feed mechanism (
When the power is turned on for a device equipped with 1), the paper feed mechanism (1)
In the control method for ejecting the remaining paper from the paper, a paper detection sensor (8) is provided near the paper intake port (2), and a paper detection circuit (10), a pulse number counting section (11), and a counter A paper detection circuit (10) includes a number holding unit (12), a paper feed mechanism control unit (13), and a paper feed roller drive unit (14), and the paper detection circuit (10) detects when paper (9) is present on the paper detection sensor (8). The pulse count section (11) sends a signal to that effect, and the pulse count section (11) connects the paper detection circuit (10) to the paper detection circuit (10).
By counting the drive pulses generated by the paper feed motor drive pulse generator (15) based on the signal from the paper feed motor drive pulse generator (15), the pulses after the leading edge of the paper (9) passes over the paper detection sensor (8) are counted. to calculate the paper feed count, and also detect that the trailing edge of the paper (9) is detected by the paper detection sensor (8).
) to calculate the number of out-of-paper counts by counting the pulses after passing over the
The paper feed mechanism control section (13) non-volatilely holds the paper feed count number and paper out count number calculated by 1).
2) is compared with a constant obtained by converting the physical distance into the number of pulses of the paper feed motor, and when it is determined that there is remaining paper, the paper feed roller drive unit (14) is activated. Remove the remaining paper from the paper outlet (7)
A paper ejection control method from a paper feed mechanism when power is turned on, characterized in that the paper is ejected from the paper feed mechanism.