JPH03182383A - Detecting system for erroneous insertion of recording sheet - Google Patents

Abstract

PURPOSE:To report erroneous insertion of a recording sheet before the use thereof, to use the surface and the rear of a heatsensitive recording sheet in an accurate state, and to enable detection of ordinary insertion by a method wherein a recording sheet is charged, a predetermined specified letter or symbol is printed on a recording sheet 12, the specified letter or symbol is decided by a recognizing part, and a result is displayed on a display part. CONSTITUTION:When a recording sheet 12 is a heat-sensitive recording sheet and charged in an accurate surface and rear state, a specified letter or symbol is printed on a recording sheet by a recording part (thermal head) 13, the printing is recognized and decided by a recognizing part (sensor) 16, and display indicating accuracy is made on a display part (display) 15 through a control part 11. When the recording sheet 12 is charged in a reverse state, since no printing is effected on the rear of the heat-sensitive sheet, the specified letter or symbol is not recognized and decided by the recognizing part, snd erroneous insertion is displayed on the display part 15.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a method for detecting erroneous insertion of recording paper for detecting erroneous insertion when inserting recording paper when thermal paper is used, and instructing correct insertion. The purpose of this system is to notify the user before use so that both sides of thermal recording paper can be used correctly, and to detect when plain paper is inserted. In a method for detecting incorrect insertion of recording paper in an apparatus equipped with a display unit that recognizes specific characters or symbols printed in the recording unit, The apparatus is configured to print a predetermined specific character or symbol on recording paper, determine the specific character or symbol by the recognition section, and display the determination result on the display section.

[Industrial application field]

The present invention relates to a recording paper erroneous insertion detection method for detecting erroneous insertion of recording paper when thermal paper is used and instructing correct insertion.

Although several types of recording devices have been provided in recent years, recording paper is often inserted incorrectly, so there is a desire for a system to prevent such erroneous insertion.

[Prior Art and Problems to be Solved by the Invention] In conventional recording apparatuses, even if the front and back sides of thermal recording paper are mistakenly inserted, it is not detected or reported, and therefore, it is often not noticed at the time.

If the front and back sides of thermal recording paper are inserted incorrectly, the front side of thermal paper is treated to develop color when heated.
Since no coloring process was applied to the back side, nothing was printed on it, and similarly, even when plain paper was inserted, there was no heating and no coloring, resulting in the problem of losing important originals.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to make it possible to notify erroneous insertion of recording paper before its use, to enable correct use of both sides of thermal recording paper, and to detect insertion of plain paper.

[Means to solve the problem]

In the present invention, as illustrated in FIG. In a method for detecting incorrect insertion of recording paper in an apparatus equipped with a recognition unit 16 that recognizes characters or symbols,
The recording paper 12 is loaded, the recording unit 13 prints a predetermined specific character or symbol on the recording paper 12, the recognition unit 16 determines the specific character or symbol, and the determination result is A recording paper erroneous insertion detection method is provided which is characterized by displaying the information on the display unit 15.

[For production]

If the above method is used, in Fig. 1, if recording paper 1
If 2 is thermal recording paper and it is loaded correctly on both sides, a specific character or symbol is printed on the recording paper at the recording section (thermal head) 13, and the printing is recognized by the recognition section (sensor 2).
A recognition determination is made in step 16, and a positive message is displayed on the display section 15 via the control section 11. If the recording paper 12 is loaded in the opposite direction, the thermal paper will not be printed on the back side, so the recognition section will not recognize or judge a specific character or symbol, and the display section 15 will display an incorrect insertion. Since the above-described determination process is executed as shown in the flowchart of FIG. 2 only when there is no recording paper, recognition determination is not performed during normal operation. The determination result of the recognition unit can also be used as a warning with an abnormal sound using an audio signal.

〔Example〕

FIG. 1 is a block diagram showing the configuration of a thermosensitive facsimile machine that detects erroneous insertion of the front and back sides of thermosensitive recording paper as an embodiment of the present invention.

This device includes a control unit 11, a thermal head 13 as a recording unit, and a sensor 14 as a recording paper near-end recognition unit.
, a display 15 as a display section, a sensor 16 as a print result recognition section, and a speaker 17 as an acoustic notification device. The control unit 11 controls the operation of the recording paper 12, the sensors 14 and 16, the thermal head 13, the display 15, and the speaker 17.

When the recording paper 12 is loaded into the apparatus, it passes near a sensor 14, passes through a thermal head 13 that performs printing and a sensor 16, and is sent out of the apparatus. The sensor 14 detects whether or not the recording paper 12 is loaded.

The thermal head normally performs printing according to the control from the control section, but when the recording paper 12 runs out and a new one is loaded, the process follows the flow chart shown in FIG.

That is, when the recording paper 12 runs out, the flag is set to zero (step 511), the sensor 14 outputs an off signal (step 512), and an alarm sounds to instruct the insertion of the recording paper (step 5).
13) is issued. This will insert the recording paper.
Step 514), if the sensor 14 is turned on, step S16
If it is still off, return to S13 (step 515).
. At step 316, a predetermined specific character or symbol (eg, a striped pattern) is printed on the recording paper 12 by the thermal head. If the recording paper 12 is loaded with the front and back reversed, the print will not be developed if it is thermal paper. Therefore, in the sensor 16, if the recording paper 12 is correctly loaded, the sensor 16 is in the on state, and if it is incorrectly loaded, the sensor 16 is in the off state (step 517). If the sensor 1G is off, the flag is determined in step S19, and a command is issued via the control unit 11 to change the sound to zero or non-zero and output an abnormal sound from the speaker 17, and at the same time, the display 15 is
An image indicating that the recording paper is incorrectly loaded is displayed, a flag is added by 1, and control is returned to step S14. At this time, if the flag is non-zero, it is determined that there is an error even if the recording paper is inserted upside down, the inserted recording paper is determined to be plain paper, and the display sound, etc. is changed. When the sensor 16 is on, a normal sound indicating that the recording paper is normal is emitted from the speaker via the control unit 11 (step 318), and a message is displayed on the display 15 that the recording paper is loaded normally.

The process shown in FIG. 2 is entered only when there is no recording paper, and the sensor 16 does not check printed data or the like when ordinary recording paper is present. Furthermore, since the last black band on the recording paper is written on the back side of the recording paper, only the sensor 14 detects it, indicating that there is no paper, and does not affect the sensor 16.

〔Effect of the invention〕

According to the present invention, it is possible to detect erroneous insertion of thermal paper (incorrectly loading the front and back sides of the recording paper) before using the recording paper, and it is also possible to detect the insertion of plain paper, so it is possible to prevent the loss of output data in the device in advance. .

[Brief explanation of drawings]

FIG. 1 is a block diagram of an apparatus for detecting erroneous insertion on both sides of recording paper as an embodiment of the present invention, and FIG. 2 is a flowchart illustrating the processing steps of the apparatus of FIG. In the figure, 11...control unit, 12...recording paper, 13
...Thermal head, 14...Sensor, 15...
Display, 16...Sensor, 17...Speaker. Block diagram of the device of the embodiment No. Flowchart of the processing process of the device of the possible embodiment No. □

Claims (1)

[Claims] A control section (11) and a recording section (1) having a thermal head.
3), a display unit (15) that reports an abnormality, and a recognition unit (16) that recognizes a specific character or symbol printed in the recording unit (13). In the insertion detection method, loading the recording paper (12),
The recording unit (13) prints a predetermined specific character or symbol on the recording paper (12), the recognition unit (16) determines the specific character or symbol, and the determination result is used for the recording paper (12). A recording paper erroneous insertion detection method characterized by displaying the information on a display section (15).