JPH0720714B2 - Printing method - Google Patents

Description

Description: <Industrial field of application> The present invention relates to a printing method for printing a predetermined item on a label that is sequentially conveyed.

<Prior Art> Conventionally, as the above label printing technology, for example, Japanese Patent Laid-Open No.
-120017. As shown in FIG. 5, a long paper in which a large number of labels 2 are releasably adhered to a mount 4 at a predetermined interval is run, and the unprinted label 2 is run to the position of the printer 6. After the printing is completed, the printing roller 2 is moved to the position of the peeling roller 8 so that the printed label 2 is almost peeled off from the mount 4, and the printed label 2 is completely peeled off from the mount 4 by hand. .

<Problems to be Solved by the Invention> However, in such a technique, when the printed label 2 is almost separated from the mount 4, the midway position of the unprinted label 2 to be printed next is Since it is in contact with the printing portion 6a of the printing device 6, there is a problem that only the portion 2a shown in FIG. 6 can print and the portion 2b cannot print. Conventionally, by using the label 2 in which the shop name or the like is already printed on the portion 2b, the problem of being unable to print on the portion 2b has been solved. However, if the user wants to change the shop name or the like, the label 2 is purposely printed. I had to do it again.

Further, when a thermal head is used for the printing device 6, if the heating element of the thermal head is in contact with the printing head for a long time, the heating element and the printing portion, which is the portion 2b, are fused and a label for printing. Even if I tried to run 2, I had a problem that it did not run.

Such a problem arises that the folding angle α needs to be set to an acute angle to a certain degree so that the label 2 can be peeled off from the backing sheet 4 with certainty.
This is because the distance between the platen roller 10 and the platen roller 10 (which must always be located below the printing unit 6a) must be relatively long.

<Means for Solving the Problems> In order to solve the above problems, the present invention, after the printed label is conveyed to the peeling position, the printed label is peeled from the peeling position Then, the label to be printed next is run in the direction opposite to the direction toward the peeling position by the distance at which the leading end of the label contacts the printing device.

<Operation and Effect> According to the present invention, in response to peeling of the printed label, the label is run in the direction opposite to the peeling position until the leading end of the label comes into contact with the printer. You can print from edge to edge of the label. Therefore, even when the store name or the like is changed, it can be easily dealt with. Also, characters etc. are printed from one end of the label to the middle,
Moreover, even if the printing device is a thermal head, the printed portion and the thermal head are not fused to each other.

<Example> In this example, the label 2, mount 4,
It has a printing device 6, a peeling roller 8 and a platen roller 10. As shown in FIG. 2, the platen roller 10 includes a gear 1
It is connected to the stepping motor 18 via 2, 14, and 16. Reference numeral 20 denotes a light emitting element and a light receiving element of the peeling detector.

As shown in FIG. 3, the output signal of the peeling detector 20 is supplied to the control circuit 22. In addition to this, the control circuit 22 has a label 2
The output signal of the pitch detector 24 for detecting whether or not is present at the predetermined printing position is also supplied. Control circuit 22
Is composed of, for example, a microcomputer, and based on the output signals of the peeling detector 20, the pitch detector 24, the data to be printed, etc., the printer 6 and the stepping motor 18
To control.

Now, as shown in FIG. 1 (a), the label 2 for which printing has been completed
Is conveyed to the position of the peeling roller 8. In this state, the printing position 6a of the printing device 6 is in contact with the unprinted label 2 to be printed next. Therefore, as shown in FIG. 3B, the print position is set at the tip of the unprinted label 2.
In order to bring the 6a into contact with each other, the mount 4 may be returned by the distance l. The distance k that the mount 4 moves as the stepping motor 18 advances one step is known. Therefore, the stepping motor 18 may be rotated in the reverse direction by n (= 1 / k).

Therefore, when the peeling detector 20 detects that the printed label 2 has been peeled off, the control circuit 22 sets the value i of the counter for counting the number of rotations of the stepping motor 18 as shown in FIG. 1 "(step A), the stepping motor 18 is advanced one step in the reverse direction (step B), it is judged whether the value i of the counter is larger than n by 1 (step C), and if NO, the counter The value i is incremented by 1 (step D), and the process returns to step B. Thereafter, similarly, steps B, C, and D are repeated until the determination at step C becomes NO. When the determination at step C is YES, the rotation of the stepping motor 18 is stopped.

In the above embodiment, the printing position 6a is provided on one end of the label 2.
, But the label 2 may be reversed to the position where the label 2 does not contact the printing position 6a at all.

[Brief description of drawings]

FIGS. 1 (a) and 1 (b) are diagrams showing an operating state of one embodiment of a printing method according to the present invention, FIG. 2 is a partially omitted configuration diagram of an apparatus used in the same embodiment, and FIG. 3 is the same embodiment. FIG. 4 is a block diagram of the apparatus used in FIG. 4, FIG. 4 is a flowchart of the apparatus used in the same embodiment, FIG. 5 is a partially omitted configuration diagram of the apparatus used in the conventional printing method, and FIG. 6 is a plan view of a label to be printed. . 2 ... Label, 6 ... Printing device, 18 ... Stepping motor.

Claims (1)

[Claims] 1. A plurality of labels, each of which is provided on a mount at a predetermined distance from each other, is printed next when a label for which printing by the printing device has been completed is run to a peeling position together with the mount. In the printing method in which the printing device comes into contact with the label in the middle of the label, the label to be printed next is separated from the printing device by the peeling position in response to peeling the label for which printing has been completed at the peeling position from the mount. A printing method characterized in that the backing sheet is conveyed in a direction opposite to the direction toward the front side by a distance such that the leading end of the label to be printed next comes into contact with the printing device.