JPS6113318Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a printer that uses so-called continuous printing paper that is continuous for a plurality of pages.

Conventional technology In general, in printers that use continuous printing paper, the distance between the print head and an end detector that detects the end of the paper is arbitrarily determined depending on the size of the printer, and the end detector detects the end of the paper. The configuration is such that the print head immediately stops printing on that "line."

Problems to be Solved by the Invention Therefore, in this type of printer, it is necessary to ensure that the print head is always positioned at the last line of any page when the end of the paper is detected by the end detector. In this case, printing by the print head ends in the middle of a page, resulting in a problem in that the printing on that page is completely wasted.

The present invention eliminates the above-mentioned drawbacks of the conventional printer, and provides an excellent printer with a simple configuration that can accurately print up to the last line of the page one page before the last page and end printing at that point. The purpose is to

Means to solve the problems In order to achieve the above object, the present device uses paper having an end mark at the last page position, and is configured to have an end mark detector that detects this end mark and a print head whose distance is greater than the distance from the boundary line between the last page of the paper and the page immediately preceding it to the end mark of the paper, and when the detector detects the end mark of the paper, the print head continues printing up to the last line of the page being printed at that time and stops printing at the last line.

Therefore, according to the present invention, it is possible to accurately print up to the last line of the page one page before the last page and terminate the printing at that point, and all pages except the last page can be printed accurately. It has the effect that printing is completed for each point.

Embodiment FIG. 1 shows the configuration of an embodiment of the printer of the present invention. In Figure 1, 1 is a plurality of consecutive pages of form paper, 2 is a tray for storing paper 1, and 3 is an end for detecting the end display provided at the last page position of paper 1. a display detector, 4 a sprocket for transporting the paper 1 to the print head side to be described later, and other paper transport devices;
5 is a platen, 6 is a print head for printing characters, etc. on paper, 7 is a cutter used to cut paper 1, 8 is a board for attaching these components, and 9 is a printer body that constitutes the printer. be.

As shown in FIG. 2, the paper 1 has sprocket holes 11 on both sides, and perforations 1 are provided at the boundaries of each page to facilitate cutting.
2 is used. An end display 10 such as an end detection hole is provided in the center of the last page of the paper 1 to indicate the end of the paper 1, and from this end display 10 there is a boundary line between the last page and the previous page. 12 is set to be smaller than the distance between the print head 6 and the end display detector 3.

In the above embodiment, when the paper 1 stored in the tray 2 is set in the printer main body 9 as shown in FIG. 1 and the printer main body 9 is driven, the paper 1 is sequentially transferred to the print head 6 side by the sprocket 4. The printing head 6 sequentially prints characters, etc. on the paper 1. The sheets of paper 1 are sequentially transferred to the print head 6.
When characters etc. are printed sequentially and the end display 10 provided on the last page comes to face the end display detector 3, the end display 10 is detected by the detector 3, and the above detection The device 3 outputs a predetermined signal. In response to this signal, when the printing head 6 has printed up to the last line of the page currently being printed by the printing head 6, the printing is terminated.

Therefore, this allows the printing to be completely stopped when printing is completed up to the last line of the page one page before the final page. That is, according to the above embodiment, since the distance between the print head 6 and the end display detector 3 is made larger than the distance from the end display 10 to the boundary line 12 between the last page and the previous page, the end display At the time when the detector 3 detects the end display 10, the print head 6 is printing the page before the last page, so from then on, that page is printed until the last line is printed. Then, it will be possible to print completely up to the last line of that page, that is, the page one page before the final page, and the above printing will be reliably completed up to the page one page before the final page. become.

In the above embodiment, the end display 10 is formed by a hole, but it goes without saying that the final page may be cut in the middle or any colored display may be displayed in the middle of the final page. There is no such thing.

Effects of the invention As is clear from the above embodiments, the present invention uses a sheet of paper having an end indication at the last page position, and determines the distance between the end indication detector for detecting this end indication and the print head between the last page of the paper and the print head. The distance is greater than the distance from the boundary line between the previous pages to the end indication of the paper, and when the detector detects the end indication of the paper, the last line of the page currently being printed by the print head. Therefore, according to the present invention, all the other pages except the last page can be completely printed, and the printing process is completed when the printing is completed. This has the advantage that even if you wish to continue printing, you can simply replenish paper and start printing immediately.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional side view of an embodiment of the printer of the present invention, and FIG. 2 is a perspective view of essential parts of a form used in the printer. 1... Paper, 2... Tray, 3... End display detector, 6... Print head, 10... End display, 12... Perforation (border line).

Claims (1)

[Scope of utility model registration request] A paper transport device that transports a plurality of consecutive pages of printed paper in a uniform direction, and an end indicator that is provided upstream of the paper transported by the transport device and provided at the last page position of the paper. an end indicator detector for detecting the last page of the paper, and a print head provided on the downstream side of the paper transferred by the transfer device, the distance between the print head and the detector being determined as the last page of the paper. The distance from the boundary line between the previous pages to the end indicator of the paper is set to be greater than the distance, and the output of the detector is used to print by the print head at the end of the page one page before the last page of the paper. A printer configured to stop at a line.