JPH0345353A - wire impact printer equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wire impact printer device.

[Summary of the Invention] The present invention provides a wire impact printer device in which when a paper thickness value detected by a paper thickness detection means exceeds a predetermined value, a cut sheet is removed by a paper ejection means and an automatic paper feed means. By performing the ejection/f4@paper operation, printing is not performed on cut sheets exceeding a predetermined value, making it possible to prevent damage to the print head such as wire bending.

[Prior Art] In order to prevent damage to the print head, such as wire bending, in conventional wire impact printers, it is common practice to reduce the print head's moving speed when printing on paper that exceeds a specified paper thickness. 〇 [Problem and purpose to be solved by the invention] However, since printing is always performed on paper that exceeds a predetermined paper thickness, depending on the paper thickness, the print head may cause wire breakage or other problems. This was not a fundamental countermeasure, as it often caused damage to the equipment.

The present invention is intended to solve these problems, and its purpose is to prevent damage to the print head, such as wire bending.

[Means for Solving the Problems] The printer device of the present invention comprises: a) automatic paper feeding means for automatically feeding cut sheets; and b) paper fed by the automatic paper feeding means. c) a sheet ejecting means for ejecting the cut sheet fed by the automatic sheet feeding means; d) , if the paper thickness value detected by the paper thickness detection means exceeds a predetermined value, after the fed cut sheet is ejected by the paper ejecting means and the automatic paper feeding means; , the cut paper is fed again.

[Operation] According to the above configuration of the present invention, by not performing a printing operation on a cut sheet exceeding a predetermined paper thickness, it is possible to prevent damage to the print head such as wire bending.

[Examples] Hereinafter, the present invention will be described in detail based on Examples.

FIG. 1 shows the configuration of the present invention.

FIG. 2 shows an embodiment consisting of a microcomputer 22 and peripheral devices. The microcomputer shown here includes a CPU, RAM, input/output board, A/D converter, etc.

Paper thickness detector 21 is connected to an input/output port of microcomputer 22 . As a result, when a paper thickness detection request signal is sent from the microcomputer 22, a detection operation is executed, and the detected paper thickness signal is read into the microcomputer 22. Further, the paper thickness value is set in RAM or ROM in the microcomputer. For example, if Q is set to 2 mm, the paper thickness detector 21
If the thickness exceeds 0.2 mm, a paper ejection request signal and a paper feed request signal are sent to the automatic paper feed/ejection device 23, and the paper ejection operation and automatic paper feed are performed. make the action take place. Further, 24 is a paper presence/absence detector that detects the presence or absence of fed paper. The paper thickness signal mentioned above is 0.
When the distance is 2 mm or less, no signal is sent to the automatic paper feed/discharge device 23. The paper thickness values listed above are merely examples.

Next, the operation of the present invention configured as described above will be explained using the flowchart of FIG.

When the power of the printer is turned on, the flowchart 1- of FIG.
The operation is performed according to the procedure of the control program shown in FIG.

First, the presence or absence of fed paper is detected by the paper presence/absence detector (step 32). At this time, if the answer is No, this control ends, and if the answer is Yes, the paper thickness is detected by the paper thickness detector (step 33).

Detected paper thickness and RAM in the microcomputer
Alternatively, the thickness is compared with the set thickness T set in the ROM (step 34), and if NO, this control is ended. If Yes, the paper is ejected by the paper ejecting device (step 35).
) The above is the control procedure when the power is turned on.

Next, the control procedure for paper feeding will be explained according to the control program shown in the flowchart of FIG. 38).Subsequently, the paper thickness is detected by the paper thickness detector (step 39).

Detected paper thickness and RAM in the microcomputer
Alternatively, the thickness is compared with the set thickness T set in the ROM (step 40), and if the result is No, this control is ended. If Yes, the paper is ejected by the paper ejecting device (step 41).
) When the paper ejection is completed, the continuous paper ejection flag stored in the RAM in the microcomputer is referred to and it is determined whether or not the paper has been ejected continuously following the previous paper (step 42). ). If No, the continuous paper discharge flag is set and the paper is fed again (step 38).

If Yes, this control is abnormally terminated.

In this way, by discharging toothpicks/candy paper according to the procedure shown in the flowchart of FIG. 3, it is possible to prohibit printing operations on cut sheets exceeding a predetermined paper thickness.

[Effects of the Invention] As described above, according to the present invention, by prohibiting the printing operation on cut sheets exceeding a predetermined paper thickness, it is possible to eliminate factors that may cause damage to the print head, such as wire bending. It becomes possible.

4,

[Brief explanation of drawings]

FIG. 1 is a diagram clearly showing the configuration of the present invention, FIG. 2 is a block diagram as an embodiment, and FIG. 3 (al (b) is a flowchart showing an example of a control program. 11...Paper thickness detection means 12 . . . Paper thickness determination means 13 . . . Automatic paper feeding means”, 4 .

Claims (1)

[Scope of Claims] a) automatic paper feeding means for automatically feeding cut paper, and b) detecting the thickness of the cut paper fed by the automatic paper feeding means. c) a paper ejecting means for ejecting the cut sheet fed by the automatic paper feeding means;
In the impact printer device, d), when the paper thickness value detected by the paper thickness detection means exceeds a predetermined value, the paper discharge means and the automatic paper feed means remove the fed single sheet. A wire impact printer device characterized in that after paper is ejected, the cut paper is fed again.