JPH0320349B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cut inserter that is attached to a printer to feed cut sheets into the printer or to pull out cut sheets coming out of the printer.
The purpose is to provide a cut sheet inserter that automatically detects the position of a cut sheet when a single switch is operated, and feeds or pulls out the sheet into the printer depending on the detection result. There is a particular thing.

Conventional sheet inserters have two switches: a suction switch for feeding the sheet into the printer and an ejection switch for pulling it out from the printer.The user can selectively operate these switches. The paper can then be moved upwards or downwards in the desired direction. However, with this configuration, the user often makes a mistake in operating the switch, resulting in inconveniences such as trying to feed a slip of paper to the printer but not actually doing so. A situation was occurring.

The present invention is intended to eliminate such conventional drawbacks, and one embodiment thereof will be described below with reference to the drawings.

In FIG. 1, reference numerals 1 and 2 are apparatus bodies, and these apparatus bodies 1 and 2 are connected by a guide rail 3, a guide shaft 4, and a reinforcing shaft 5, which are arranged parallel to each other. Two guide drive members 7 and 8 are slidably attached to the guide rail 3 to engage with both side edges of the cut sheet 6 to guide it and to transport it in one direction (the direction of the arrow in the figure). ing. These guide drive members 7 and 8 are guide portions 7 that guide the cut sheet 6 on both side edges thereof.
a, 8a, front guide parts 7b, 8b, a drive unit that drives the cut paper 6 to be transported in the direction of the arrow, and a position detection unit that detects the position of the cut paper 6 and controls the operation of the drive unit. 7c, 8c, and clip-like stopper portions 7d, 8d for holding the guiding and driving members 7, 8 at arbitrary sliding positions.
Further, at the lower end of the guide drive members 7 and 8, there is a drive shaft 9 supported at both ends by the device bodies 1 and 2.
is inserted therethrough to support the sliding movement of the guide drive members 7 and 8 and to transmit force from a drive source (not shown) on the printer side to the drive section. Further, a transparent back guide member 10 and a front guide member 11 are arranged between the two guide drive members 7 and 8, and the back guide member 10 is connected to the guide rail 3.
The front guide member 11 is slidably supported by the front guide member 11.
is attached to the guide shaft 4 so as to be slidable and rotatable. Above back and front guide member 1
0 and 11 have the function of preventing the central portion from bulging when the cut sheet 6 is transferred, thereby allowing smooth transfer. Further, on the front surface of the guide rail 3, a scale 12 for displaying the width of the cut sheet in inches is printed parallel to the rail, and on the guide portion 8a of one guide drive member 8, the side edge of the cut sheet is printed. A window 13 is provided close to the engagement position through which the graduations of the scale 12 can be read. This window 1
Since the front guide section 8b located in front of the camera 3 is transparent, the scale can be read from this guide section 8b through the window 13. Further, the guide rail 3 is provided with a stop pin 14.
When the other guide drive member 8 is slid to the left in the figure, the member 8 comes into contact with the pin 14 and is stopped. A gap is provided between the guide portions 7a, 8a of the guide drive members 7, 8 and the mechanism portions 7c, 8c for allowing the slip to pass through. The position detection section in the mechanism section 7c of the guide drive member 7 is connected to a suction and discharge switch 16 provided on the main body 1 of the apparatus via a curl cord 15 loosely fitted to the reinforcing shaft 5. connected to the internal control circuit. 17 indicates a platen on the printer side.

FIG. 2 shows the internal structure of one of the guide and drive members 7, in which the drive shaft 9 is fitted into the feed roller 18, and the two are rotated integrally. The pressure roller 19 is rotatably supported while being biased by a biasing spring 20, and pinches the cut sheet 6 between it and the feed roller 18 to rotate and transport the paper. An upper end detection sensor 21 and a lower end detection sensor 22 are arranged above and below the feed roller 18 to detect the position of the cut sheet 6. The guide groove 23 is provided to guide the cut paper 6. Through this groove, the cut paper 6 is fed between the platen 17 and the print head 24 by the pressure roller 19 and the feed roller 18, and the cut paper 6 is The required printing is then performed by the printing head 24.

Next, FIG. 3 is a circuit diagram of this embodiment, and FIG. 4 is an operation explanatory diagram. When a switch is operated to artificially cause the cut sheet 6 to be sucked in or ejected, it is first assumed that the cut sheet 6 is in the state shown in FIG. 4A.
In other words, the cut sheet 6 is placed at the position of the upper edge detection sensor 21.
This is the case when there is. In this case, the light from the sensor light emitting section composed of the resistor 25a and the light emitting diode 21a shown in FIG. The input to the shaping circuit 26 becomes "H". Similarly, the input to the waveform shaping circuit 27 becomes "L". In this state, when the suction/emission switch 16 is pressed, the input port 3 is
A single pulse of "L" is input to 1. Program store type microprocessor 32 (hereinafter referred to as
When the CPU (abbreviated as CPU) recognizes from the output of the input port 31 that the suction and discharge switch 16 has been pressed, the CPU 32 inputs the outputs "H" and "L" of the waveform shaping circuits 26 and 27, respectively, through the input port 31. Then, it is assumed that the suction/ejection switch 16 has been pressed while the paper is in the state shown in FIG. 9. The feed roller 18 is rotated in the normal rotation direction (arrow X direction), and the cut sheet 6 is sucked into the printer side. When the inhalation is completed, the state shown in FIG. 4C is reached, so the outputs of the waveform shaping circuits 26 and 27 become "L" and "H", respectively. Therefore, the CPU 32 recognizes this state from the input port 31 and outputs the information via the output port 23.
A drive stop signal is sent to the ticket sheet drive circuit 34, and the ticket suction operation is completed.

Next, assume that the cut sheet 6 is in the state shown in FIG. 4B. In this case, as is clear from the above explanation, the outputs of the waveform shaping circuits 26 and 27 become "H" and "H", respectively, and when the intake/discharge switch 16 is pressed in this state, the CPU 32 controls the output of the single sheet. A signal is sent to the cut paper driving circuit 34 to rotate the feed roller 18 in the reverse direction (arrow Y direction), and the cut paper 6 is pulled out from the printer.

Also, when the switch 16 is pressed in the state shown in FIG. 4C, the feed roller 18 is rotated in the direction of arrow Y and the cut sheet is ejected.

As described above, according to the sheet inserter of the present invention, two operations that are easy for the operator to remember, namely, the sheet feeding operation and the sheet ejecting operation, which are two sides of the same coin, can be combined into one.
By making this possible by operating a single switch, inconveniences caused by erroneous operations can be reduced, and this is practically effective.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a cut inserter according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of the main part thereof, Fig. 3 is a circuit diagram of the main part, and Fig. 4 A, B, and C are explanatory diagrams of the operation. It is. 6... Cut paper, 16... Suction/ejection switch, 18... Feed roller, 21, 22... Sensor, 32... Microprocessor, 34... Cut paper drive circuit.

Claims (1)

[Claims] 1. A feed roller that transfers the sheet by rolling contact with the sheet, a sheet detection sensor placed above and below the feed roller, a switch that starts the feed roller, and a If the above-mentioned switch is operated while the output and the output from the above two sensors are input and only the upper sensor is detecting a cut sheet, the above-mentioned feed roller is rotated in the normal rotation direction and the above-mentioned upper sensor is The feed roller maintains its rotation until it no longer detects a cut sheet, and if the switch is operated while the lower sensor is detecting a cut sheet, the feed roller is controlled to rotate in the reverse direction. A single sheet inserter equipped with a control circuit.