JPH01176750A - Sheet inclination measuring system - Google Patents

Abstract

PURPOSE:To sense inclination of sheet and the direction of inclination by furnishing a pair of sheet sensor on the transport path of a transport device for sheets oriented orthogonally to the transport direction, and by calculating the output of the sensor. CONSTITUTION:On the way of a transport path 15 for transportation of sheets 1 in the direction of arrow, a sensor to sense whether any sheets exist, for ex. photo-couplers 2, 3 is arranged in such an orientation as orthogonal to the transport direction of the transport path 15. The output of the sensors 2, 3 is fed into a calculating part 4, and operating sequence of the sensors 2, 3 and the operating time are sensed, and the direction to which the sheet 1 is inclined and the degree of inclination are sensed. Thereby inclination of sheet and its direction can be easily sensed automatically.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for observing the conveying state of paper sheets in an apparatus for conveying paper sheets, and in particular, relates to a method for observing the conveyance state of paper sheets, and in particular, the inclination of the paper sheet with respect to the feeding path. This invention relates to a method for measuring the inclination of paper sheets, which measures the presence or absence of paper sheets and the direction of their inclination.

[Prior Art] Conventionally, the inclination of this type of paper sheet conveyance has been measured by taking high-speed video or the like.

[Problems to be Solved by the Invention] The conventional method of measuring the inclination of paper sheets by taking high-speed video as described above lacks accuracy because it is based on human visual evaluation, and it is impossible to take video. The disadvantage is that it is not possible to measure the transport area.

[Means for Solving the Problems] The method for measuring the inclination of paper sheets of the present invention which solves the above-mentioned conventional problems is to measure the inclination of paper sheets in a direction perpendicular to the transport direction of the transport path of a device that transports one paper sheet. -f of the above paper sheets placed along
a plurality of sensors that output signals in accordance with the T-absence, and an identification means that detects that paper sheets are being conveyed in an inclined state with respect to the conveyance direction based on the signals from the bowl sensor and identifies the direction of the inclination. The structure has the following.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIGS. 1 and 2 are time charts showing a schematic configuration of an embodiment of the method for measuring the inclination of paper sheets according to the present invention and signals from a sensor, respectively.

In the figure, 1 is paper sheets conveyed on the conveyance path 15, 2 and 3
is a sensor installed on the conveyance path, which indicates a signal "0" when the paper sheet 1 covers the sensors 2 and 3, and indicates a signal "1" otherwise. Reference numeral 4 denotes an identification device that extracts a signal from a sensor and identifies the inclination t# of the paper sheet 1 and the direction of inclination.

The sensors 2 and 3 are arranged at a predetermined interval along a direction perpendicular to the conveyance direction of the conveyance path 15. As the sensors 2 and 3, for example, optical sensors consisting of a light emitting element and a light receiving element can be used.

In FIG. 2, 5 and 6 are time charts of signals obtained from sensor 2 and sensor 3. 7°8.9 and lO are the timings to be detected according to the method of the present invention,
7 and 9 indicate the timing when the paper sheet 1 begins to cover the sensor 2 and the timing when the paper sheet 1 finishes passing the sensor 2,
8 and lO indicate the timing at which the values of the signals of sensor 2 and sensor 3 become equal. 11 and 12 indicate the time lag between sensor 2 and sensor 3 (No. 3) caused by the inclination of paper sheet l.

Next, a method for measuring the inclination of paper sheets will be explained.

The value of the sensor 3 is saved when the identification device 4 detects timings 7 and 9. Next timing 9 and 7
When timing 8 and lO are detected before the detection of , the direction of inclination of the paper sheet 1 is determined based on the previously stored value of the sensor 3. When timings 8 and 1o are not detected, it is assumed that the sheet 1 is not tilted. When a tilt occurs, the amount of tilt is measured based on the lengths of the shift times 11 and 12.

Furthermore, the measurement method of the present invention naturally allows cases where the inclination of the paper sheet 1 shown in FIG. Also, the direction of inclination of the paper sheet 1 can be determined according to the waveform shown in FIG. 2, and the amount of inclination can be measured.

[Effects of the Invention] As explained above, the present invention provides a signal depending on the presence or absence of paper sheets installed along the direction orthogonal to the transport direction of the transport path of a device that transports paper sheets. By having a plurality of output sensors and an identification means that detects that the paper sheet is being conveyed in an inclined state with respect to the conveyance direction based on the signals from each sensor and identifies the direction of the inclination, it is possible to This has the effect that the conveyance state of a plurality of paper sheets can be easily and accurately measured. Furthermore, unlike the conventional measurement method using video photography, where it is impossible to measure transport parts that cannot be photographed, it is possible to measure all parts.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the measuring method of the present invention, and FIG. 2 is a time chart showing signals from the sensors in FIG. ! = Paper sheets to be conveyed 2: Sensors installed on the conveyance path 3: Sensors installed on the conveyance path 4: Device for taking out signals from the sensors 5.6: Signals obtained from the sensors

Claims (1)

[Claims] A plurality of sensors are installed along a direction perpendicular to the conveyance direction of the conveyance path of a device that conveys paper sheets, and output signals depending on the presence or absence of the above-mentioned paper sheets. A method for measuring the inclination of paper sheets, comprising an identification means for detecting that the leaves are being conveyed in an inclined state with respect to the conveyance direction and identifying the direction of the inclination.