JPH058519A - Trouble detecting method of paper feeder of printer - Google Patents

Abstract

PURPOSE:To offer a trouble detecting method of a paper feeder of printer capable of detecting troubles in the paper feeder and quickly taking countermeasures against the troubles even when any kind of paper is used as far as it is a continuous form. CONSTITUTION:A printer 1 is equipped with a tractor 3 that sends out a continuous form 2, a paper feed detector 4, a printing section 5 that performs printing, a paper feed detector 6 and a trouble detector 9. The paper feed detector 4 detects the action of the tractor 3 and outputs a detected signal 7, and the paper feed detector 6, that rotates as it lightly touches on the continuous form 2 that passes the printing section 5, detects actions caused by the movement of the continuous form 2 and outputs a detected signal 8. The trouble detector 9 senses the disagreement between the signals 7 and 8 to detect troubles in the paper feeder of the printer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feed mechanism failure detection method for a printing apparatus, and more particularly to a paper feed mechanism failure detection method for a printing apparatus that uses long continuous paper.

[0002]

2. Description of the Related Art A conventional paper feed mechanism failure detection method for a printing apparatus is a method for confirming the normality by detecting passage of the paper within a fixed time after printing in the case of single-cut paper. However, in the case of continuous paper, this continuous condition is a constraint condition, and except for special paper with marks and folds added at equal intervals, the failure of the paper feeding mechanism of the printer is detected. There was no way.

[0003]

The above-mentioned conventional paper feed mechanism failure detection method for a printing apparatus has a constraint that continuous paper is continuous, and marks and folds are added at equal intervals. With the exception of special paper, there was no way to detect a failure of the printer's paper feed mechanism, so in this case, the operator should go to the printer's installation site and check the printer's failure until it is visually inspected. There is a problem in that the state cannot be grasped, and the delay in troubleshooting may have a great impact on the department that needs the printed matter.

An object of the present invention is to detect a failure of a paper feeding mechanism of a printing device, which is capable of detecting a failure of the paper feeding mechanism of the printing device, regardless of the type of continuous paper. To provide.

[0005]

The paper feed mechanism failure detection method for a printing apparatus according to the present invention is a paper feed mechanism failure detection method for a printing apparatus in which a long continuous paper is used and printing is performed at the printing unit. A first paper feed detection unit that detects the operation of a tractor that sends out the second paper, and a second paper that detects the operation accompanying the movement of the continuous paper that rotates while contacting the continuous paper that has passed through the printing unit. A feed detection unit, a first detection signal that the first paper feed detection unit detects and outputs the operation of the tractor, and a second detection signal that the second paper feed detection unit detects and outputs the operation. A failure detection unit that receives and detects a mismatch between the first and second detection signals to detect a failure of the paper feed mechanism of the printing apparatus.

[0006]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is an illustration of an embodiment of the present invention.

A printer 1 to which the present invention is applied has a tractor 3 for feeding a continuous paper 2, a paper feed detector 4 for detecting the operation of the tractor 3, a printer 5 for printing, and a printer 5 for printing.
Lightly touch the continuous paper 2 after passing through it and rotate it
Paper feed detection unit 6 that detects the movement associated with the movement of the paper, a detection signal 7 that the paper feed detection unit 4 detects and outputs the movement of the tractor 3, and a detection signal that the paper feed detection unit 6 detects and outputs the movement. A failure detection unit 9 is provided for receiving 8 to detect a discrepancy between the detection signals 7 and 8 and to detect a failure of the paper feed mechanism of the printing apparatus.

Since the paper feed detecting unit 6 detects the movement of the continuous paper 2 through a ball that rotates in contact with the continuous paper 2 lightly, the resistance when the continuous paper 2 is moved can be made extremely small. .. Next, the operation will be described.

When the printing device 1 prints on the continuous paper 2 by the printing unit 5, the continuous paper 2 is sent out by the operation of the tractor 3, and the operation of the tractor 3 is detected by the paper feed detection unit 4. The detection signal 7 is output to the failure detection unit 9. At this time,
The continuous paper 2 also moves continuously in synchronism with the operation of the tractor 3 because the portion of the continuous paper 2 that has reached the paper feed detection unit 6 after passing through the printing unit 5 is moved by the paper feed detection unit 6. Two
Contacting with and rotating to detect the detected signal 8
Output to. Fault detection unit 9 that has received the detection signals 7 and 8
Determines that it is normal when the detection signals 7 and 8 synchronously display operation and stop, but it is abnormal when one of them displays operation and the other displays stop. When the printer 1 is determined to be present, the printer 1 is stopped and an alarm is output to the outside.

[0011]

As described above, according to the present invention, the first paper feed detecting portion for detecting the operation of the tractor for feeding the continuous paper, and the continuous paper which rotates by contacting the continuous paper after passing through the printing portion. A second paper feed detection unit that detects an operation associated with the movement of the paper, a first detection signal that the first paper feed detection unit detects and outputs the operation of the tractor, and a second paper feed detection unit that operates. And a failure detecting section for detecting a failure of the paper feeding mechanism of the printing apparatus by receiving a second detection signal for detecting and outputting the first and second detection signals. As long as it is a sheet of paper, there is an effect that it is possible to detect a failure of the paper feeding mechanism of the printing apparatus, speed up the failure handling, and prevent the spread of damage.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

[Explanation of symbols]

 1 Printing Device 2 Continuous Paper 3 Tractor 4, 6 Paper Feed Detection Section 5 Printing Section 7, 8 Detection Signal 9 Fault Detection Section

Claims (1)

Claim: What is claimed is: 1. A first paper for detecting an operation of a tractor that feeds out continuous paper in a paper feed mechanism failure detection method of a printing device that uses a long continuous paper for printing in a printing unit. A feed detection unit, a second paper feed detection unit that comes into contact with the continuous paper that has passed through the printing unit, rotates, and detects an operation that accompanies the movement of the continuous paper, and the first paper feed detection unit. Of the first and second detection signals by receiving a first detection signal by which the unit detects and outputs the operation of the tractor and a second detection signal by which the second paper feed detection unit detects and outputs the operation. A paper feed mechanism failure detection method for a printing apparatus, comprising: a failure detection unit that detects a mismatch and detects a failure of the paper feed mechanism of the printing apparatus.