JPH0254237B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a medium setting device capable of both optical suction and tip detection type suction when setting a medium in a printing section.

In general, the media suction and setting methods for this type of media setting device include optical suction, which optically reads the printed area on the medium and sets the medium on the next line to be printed, and detection of the leading edge of the medium. However, a tip detection type suction is known in which lines to be printed are set with the tip of the medium as a reference based on print information recorded in advance in a central processing unit or the like. However, there is no compatibility between conventional optical inhalation set devices and tip detection inhalation devices, and once one inhalation method has been adopted, it is impossible to change the inhalation method without changing the entire device. Therefore, when media with different inhalation methods are mixed, it is necessary to use two types of setting devices with different inhalation methods, which is extremely inconvenient.

Therefore, the present invention is configured so that both optical suction and tip detection type suction can be performed with one device by reading the mark on the medium indicating the suction method with a mark sensor, thereby achieving the above-mentioned method. It is an object of the present invention to provide a medium setting device that eliminates the drawbacks.

Hereinafter, the present invention will be specifically explained based on an embodiment shown in the drawings.

As shown in FIG. 1, the medium setting device 1 has a curved pathway 3 formed from guide plates 2 and 2', and a medium conveying roller 5 is installed in the pathway 3 to sandwich the pathway 3. ,5',6,
Rollers 6', 7, 7', 9, and 9' are rotatably provided, of which rollers 5 and 6 can be freely moved and driven in the directions of arrows A and B. A mark sensor 10 is provided below the rollers 6, 6' in the figure, and a mark sensor 10 is provided between the rollers 6, 6' and 7, 7' so as to be able to protrude and drive in the directions of arrows A and B with respect to the pathway 3. stopper 11 and light emitting part 12
A row sensor 12 consisting of a light receiving section 12a and a light receiving section 12b is installed on the guide plate 2 side. Further, between the rollers 7, 7' and 9, 9', there is a light emitting part 13a and a light receiving part 1.
The tip sensor 13 consisting of 3b and the platen 1
5 and a printing head 16 are provided to sandwich the pathway 3. by the way,
The row sensor 12 is connected to an optical row set control circuit 19, and the tip sensor 13 is connected to a tip detection set control circuit 20, as shown in FIG. The mark sensor 10 has a control circuit 19,
20, and further connected to switch circuit 2
Connected to 1. The outputs of the circuits 19 and 20 are input to the switch circuit 21, and the output of the switch circuit 21 is input to the medium conveyance control circuit 22.
5', 6, 6', 7, 7', 9, 9', stopper 11, etc. can be driven and controlled. On the other hand, as shown in FIG. 3, if the medium 23 is a medium in which line setting is performed by optical suction, a mark 23a is attached to the lower left margin of the medium. If it is a medium for which row setting is performed by tip-sensing suction, no mark is attached.

Since the present invention has the above configuration, when setting the medium 23 in the printing section 17 using the medium setting device 1, the medium conveyance control circuit 2
2, the medium transport rollers 5 and 6 are retracted in the direction of arrow B, and with the stopper 11 protruding in the direction of arrow A, move the medium 23 from above in the direction of arrow C in FIG. Insert until they touch. Then, if the medium 23 is a medium that performs line setting by optical suction,
The mark 23a and the mark sensor 10 face each other, and the sensor 10 outputs a reading signal of the mark 23a. Further, if the medium 23 is a medium in which line setting is performed by suction with tip detection, the mark 23a is not attached, so the sensor 10 does not output a read signal. When the read signal is output, the optical row set control circuit 19 is driven, and the switch circuit 21 connects the conveyance control circuit 22 and the circuit 19. When the read signal is not output, the leading edge detection set control circuit 20 is activated. When driven, the switch circuit 22 connects the transport control circuit 22 and the circuit 20. When the switch circuit 22 is activated, the control circuit 22 retracts the stopper 11 in the direction of arrow B and causes the rollers 5 and 6 to protrude in the direction of A, thereby sandwiching the medium 23 between the rollers 5, 5' and 6, 6'. do. Next, rollers 5, 5', 6, 6',
7, 7', 9, and 9' are rotated to start sucking the medium 23 in the direction of arrow C. In the case of optical suction, as the medium 23 moves in the direction of C,
As shown in FIG. 4, the light emitting section 1 of the row sensor 12
Light 12c is emitted from 2a to medium 23. If no printing is performed on the medium 23, the reflectance of the medium surface is high, so the reflected light 12d enters the light receiving section 12b, and the medium 23 continues to be sent in the C direction. Next, when the printed part 23b on the medium 23 and the light emitting part 12a face each other, as shown in FIG. The reflected light 12d is absorbed by the portion 23b and no longer enters the light receiving portion 12b at the moment the row sensor 12 faces the printed portion 23b from the last printed portion. Then, the row sensor 12 sends a predetermined signal to the control circuit 1.
9, and the circuit 19 outputs a signal to the conveyance control circuit 22 to further suck the medium 23 in the C direction by the distance L ₁ between the row sensor 12 and the print head 16. Thus, the medium 23 is moved by the circuit 22 a distance
L ₁ is further sucked in and the printer stops, but at this time, the next line 23c to be printed on the medium 23, that is, the line immediately below the printed portion 23b in FIG. 5, corresponds exactly to the print head 16. Become.

Next, if the medium 23 is a tip detection type inhaler,
When the medium 23 moves in the direction C, as shown in FIG. 6, the light 13c from the light emitting part 13a of the tip sensor 13 is reflected to the light receiving part 13b. While the medium 23 is moving between the light emitting section 13a and the light receiving section 13b, the light 13c is blocked by the medium 23 and does not enter the light receiving section 13b, but as shown in FIG. The moment light passes through
3c reaches the light receiving section 13b, and the sensor 13 outputs a predetermined signal to the leading edge detection set control circuit 20. Stop inhaling. Next, the circuit 20 knows which line to print from the tip 23d based on the print information Z recorded in advance in the central processing unit, etc., and determines the distance L ₂ between the sensor 13 and the print head 16.
Taking this into account, the amount of the medium 23 to be sucked and discharged in the directions of arrows C and D is calculated and commanded to the control circuit 22. Based on the command, the circuit 22 converts the medium 23 into C
Alternatively, a predetermined amount is sucked in or discharged in the D direction to accurately match the print head 16 and the line 23c to be printed.

When the line of the medium 23 is set in the printing section 17 in this way, the print head 16 is driven and a predetermined printing operation is performed on the line 23c to be printed.
When the printing operation is completed, the conveyance control circuit 22 drives the rollers 5, 5', 6, 6', 7, 7', 9, and 9', and the medium 23 is discharged in the direction of arrow D.

As explained above, according to the present invention, the medium 2
mark 23a attached to mark sensor 10
By reading with , it becomes possible to perform both optical suction and tip detection type suction with one medium setting device 1.
Even if media for different inhalation methods are mixed, it is not necessary to use two types of setting devices as in the conventional method, and it is possible to provide an extremely economical and useful medium setting device 1.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of a medium setting device according to the present invention, FIG. 2 is a block diagram showing a control system of the setting device of FIG. 1, FIG. 3 is a front view showing the medium, and FIG. 5 is an explanatory diagram of the operation by optical suction, and FIGS. 6 and 7 are explanatory diagrams of the operation by tip detection type suction. 1... Media set device, 3... Pathway, 1
0...Mark sensor, 12...Row sensor, 1
3...Tip sensor, 19...Optical row set control circuit, 20...Tip detection set control circuit, 21...
...Switch circuit, 22...Media transport control circuit, 2
3...medium, 23a...mark.

Claims (1)

[Scope of Claims] 1. A medium setting device that includes a pathway through which a medium is sucked and discharged, and that sucks and positions the inserted medium to a predetermined position, the medium setting device having a path in which the inserted medium is sucked and positioned at a predetermined position, the medium being positioned opposite to the pathway in the insertion direction of the medium. a leading edge detection sensor that detects the leading edge of the medium; a line sensor that detects a printed line on the medium; a mark sensor that detects a mark attached to a portion of the medium; and an insertion based on the detection output of the leading edge detection sensor. a first control section that controls the positioning of the inserted medium based on the detection output of the row sensor; a second control section that controls the positioning of the inserted medium based on the output of the mark sensor; a control unit that switches positioning control of the medium to either the first control unit or the second control unit, the control unit having the output of the mark sensor based on the output of the leading edge detection sensor. When indicating that the medium is a medium with a line sensor, the first control section is caused to perform positioning control, and when the output of the mark sensor indicates that the medium is based on the output of the row sensor, the second control section is caused to perform positioning control. A medium setting device characterized in that the control unit of the medium is switched to perform positioning control.