JPH02258363A - Printer - Google Patents

Abstract

PURPOSE:To prevent a required printing content from being positionally shifted even with the occurrence of an error in mounting a head by providing a first printing control part for printing a first required printing content and a mark and a second printing control part for starting printing in accordance with a second required printing content when a mark sensor detects the mark. CONSTITUTION:When a first printing control part 13 detects a printing execution instruction S1, it prints a mark 14 on releasable mount paper 2 sideward of a label 31 and, simultaneously, dries a first head 5 so that a first required printing content 15 imparted as first printing information D1 is printed. A mark sensor 16 for detecting the mark 14 is disposed on a printing position of a second head 7 and detects the mark which has been printed by the first head 5 correspondingly to the label 31. When the mark sensor 16 detects the mark 14, a second printing control part 17 drives the second head 7 so that a second required printing content 18 imparted as second printing information D2 is printed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a printing device that uses a plurality of heads to print overlappingly at the same location.

Prior Art This printing format is used in color printers. When color printing is performed on a label, a printing device as shown in FIG. 3 is used. As shown in FIG. 3(a), the wrapping body 1 is wound with printing paper 4 on which labels 3 □, 32 . The printing paper 4 pulled out from this wrapping body 1 is
As shown in FIG. 3(b), the hook is passed between the first head 5 and the platen roller 6, between the second head 7 and the platen roller 8, and to the take-up reel lO via the peeling plate 9. has been done. 1st. Ink ribbons 11 and 12 are interposed between the second heads 5 and 7 and the printing paper 4, respectively. And Ink Ribbon I! and 12 have different printing colors.

The printing operation is performed by driving the first head 5 to generate heat according to the first required printing content to transfer ink from the ink ribbon 11 to the label 3.
After transferring the printing paper 4 by the length, the second head 7 is driven to generate heat according to the second necessary print content, and the label 3.t is printed with the first necessary print content. Ink ribbon! The ink No. 2 is thermally transferred onto the label 31.

Problems to be Solved by the Invention In such a conventional configuration, printing is performed by the second head 7 at the time when the printing paper 4 has been transferred by the length after printing by the first head 5. Therefore, the elongation of the release mount 2 and the first. If an error occurs when installing the second head 5.7, the first head 5. There is a problem that a positional shift occurs in the second required print content.

SUMMARY OF THE INVENTION An object of the present invention is to provide a printing device that does not cause misalignment of the necessary printed content even if errors occur in the elongation of the printing paper or in the attachment of the head.

Means for Solving the Problems The printing device of the present invention transports a long sheet of printing paper in its longitudinal direction, and prints first sheets of paper disposed at predetermined intervals in the longitudinal direction. A printing device that sequentially prints with a second head, the first head disposed above the second head being driven to print the first necessary print content and a mark.
a mark sensor disposed at the print position of the second head to detect the mark from the print paper; The present invention is characterized in that it further includes a second printing control section that drives the head of the printer to start printing.

According to this configuration, in the first head, not only the first necessary print content but also a mark is printed by the first print control section at the same time. The second head is instructed by the second print control section to start printing the second required print content when the mark sensor detects the mark printed by the first head.

EXAMPLE Hereinafter, an example of the present invention will be explained based on FIGS. 1 and 2. Components having the same functions as those in FIG. 3 showing the conventional example will be described with the same reference numerals.

FIG. 1 shows a printing device of the present invention. First printing control section 1
3, when the printing execution instruction S1 is detected, a mark I is placed on the peelable mount 2 on the side of the label 31 as shown in FIG. 2(a).
4, and together with this, the first required printing content 15 given in the first printing information D□ is printed.
head 5 is driven. Here, the first necessary print content 15 printed in synchronization with the transfer of the printing paper 4 is expressed by hatching = The mark sensor 1B that detects the mark 14 is arranged at the printing position of the second head 7. Then, as shown in FIG. 2(b), the mark printed by the first head 5 corresponding to the label 3□ is detected.

The second print control unit 17 is configured so that the mark sensor 1B detects the mark 1.
4 is detected, the second head 7 is driven so as to print the second required print content 18 given by the second print information D2. In FIG. 2(C), the second necessary print content 18 printed in synchronization with the transfer of the printing paper 4 is represented by an asterisk.

In this way, the second head 7 starts printing based on the mark 14 printed by the first head 5, so even if the release liner 2 stretches, the first required print content 15 and the The necessary printing contents 18 of 2 can be accurately printed without positional deviation. Note that it is necessary to align the mark sensor 1B with the printing position of the second head 7, but this work is easy, and even when the length of one label becomes long, the first , the second heads 5 and 7 can be attached by simply setting the spacing roughly. The second required print content of 15°18 can be printed without positional deviation.

In the above embodiment, the mark 14 is printed on the release mount 2, but the same effect can be applied even if the mark 14 is printed at a predetermined position on the label.

In the above embodiment, the first. Although the description has been made using the second head 5.7 as an example, the same applies to the case where two or more heads are provided, and the same printing control section and the like are provided for each head.

Effects of the Invention As described above, according to the present invention, a first print control unit that drives the first head to print the first necessary print content and a mark, and a first print control unit that is arranged at the print position of the second head. a mark sensor that detects the mark from the print paper; and a second print control unit that drives a second head and starts printing according to second required print content when the mark sensor detects the mark. Because of this, the printing start of the second head is controlled by the second print control unit based on the mark printed by the first head, and errors occur in the elongation of the printing paper side and the installation of the head. Good printing conditions can be obtained with no misalignment of the required printed content.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the printing device of the present invention, FIG. 2 is an explanatory diagram of the printing process of the same device, and FIG. 3 is a block diagram of a conventional printing device. 2...Peelable mount, 3*w3a...Label, 4...
Print paper, 5... first head, 7... second head, 11° I2... ink ribbon, 13-... first print control unit, 14... mark, I5...・First required print content, l B-...Mark sensor, 17...Second
Print control unit, 18--Second necessary print content.

Claims (1)

[Claims] 1. A printing device that transports a long printing paper in its longitudinal direction and sequentially prints with first and second heads disposed at a predetermined interval in the longitudinal direction, the second head a first print control unit that prints the first required print content and mark by driving a first head disposed at a position higher than the second head; A mark sensor that detects the mark, and a second print control unit that drives a second head and starts printing according to a second necessary print content when the mark sensor detects the mark. Printing device.