JPH0751385B2 - Printer - Google Patents

Description

TECHNICAL FIELD The present invention relates to a printing apparatus that can correctly perform a footer process when using a sheet shorter than a preset sheet length.

[Prior Art] A conventional printing device prints near the leading end and the end of a sheet of paper in accordance with a preset format. For example, the distance between the leading edge of the paper and the starting line (so-called top margin), the distance between the trailing edge of the paper and the last line (so-called bottom margin), and header / footer processing such as pagination are performed.

[Problems to be Solved by the Invention] However, although the above-described processing is effective for a paper having a paper length preset in the printing apparatus, the paper length is shorter than the set paper length. If paper is used, the correct processing will not be performed. That is, the footer processing such as bottom margin setting and pagination is not correctly performed, and the format is not beautiful.

This is because the printer detects the end portion of the paper by the sensor and prevents printing beyond the end of the paper in order to prevent damage to the platen due to blank ejection. Therefore, when the end of the paper is detected when a paper shorter than the preset paper length is used, the printing device stops the footer process without issuing a warning that the paper is out, or ejects the paper. The footer process that should be performed on the previous paper is performed at the strange position of the new paper that was inserted afterwards.

[Means for Solving Problems] An object of the present invention is to solve the above problems.
As illustrated in the figure, the following configuration was adopted.

That is, the gist of the present invention is to provide a printing means for printing on the gist arranged in the printing part, a paper feeding means for supplying paper to the printing part, and a discharging means for discharging the paper in the printing part. A detection unit that is provided in the vicinity of the paper feeding unit and at a predetermined distance from the printing unit to the paper feeding side of the paper, detects the end portion of the paper, setting unit that sets at least the footer position, and the setting unit. And a printing control unit that controls the printing unit, the paper feeding unit, and the discharging unit by the output of the detection unit and the detection unit, and a detection signal of the end portion of the sheet is input from the detection unit. The print control unit performs a footer process on the sheet by the printing unit and the sheet feeding unit, discharges the sheet by the discharging unit, and then supplies a new sheet by the sheet feeding unit. This In printing apparatus according to claim.

[Operation] The detection means of the present invention is provided in the vicinity of the paper feeding means and at a position separated from the printing means to the paper feeding side by a predetermined distance.
That is, the end of the sheet detected by the detecting unit and the position corresponding to the printing unit of the sheet are separated by the predetermined distance. Therefore, the print control unit performs the footer process set on the paper by the setting unit after the detection unit detects the end of the paper. Then, the footer-processed sheet is ejected from the printing section by the ejecting section, and a new sheet is fed to the printing section by the sheet feeding section.

[Embodiment] An embodiment of the present invention will be described with reference to the drawings. The present invention is not limited to this, and includes various embodiments without departing from the scope of the invention.

FIG. 2 is a diagram for explaining the configuration of the printer of this embodiment, and is a diagram of the printer viewed from the lower side. The present embodiment is a printing apparatus that correctly performs a footer process even when the length of the paper used is shorter than a preset paper length.

The printing apparatus prints print data from the external device 5 on a sheet 30 set on the platen 20 by a print head (not shown) attached to the carriage 10. The sheet 30 is held on the platen 20 by a plurality of rollers 40 and 50. The carriage 10 is slidably attached to a guide shaft 60 together with a print head and a print ribbon (not shown).
The carriage 10 is driven by a stepping motor 80 via a belt 70 to move to a predetermined position. Further, the platen 20 is a stepping motor 90 connected via a gear.
Is driven by to move the sheet 30 to a predetermined position. or,
A paper detection sensor 100 is provided between the rollers 40 and 50 so as to face the platen 20. This paper detection sensor 1
00 is an optical sensor that reflects the reflectance of the paper 30 and the platen.
The presence or absence of the paper 30 is detected by the difference from the reflectance of 20. The paper detection sensor 100 is separated from the print head by a length equal to or longer than the length for performing the footer process. Therefore, the paper detection sensor
After the end of the sheet 30 is detected at 100, the footer process can be performed on the sheet 30. The print head is not particularly limited as long as it is a dot matrix type, a daisy wheel type, a thermal head type, an ink jet type or the like which is normally processed.

The operations of the stepping motors 80 and 90, the print head, and the like described above are controlled by the electronic control unit 110.

This electronic control unit 110 includes a well-known CPU 200, ROM 210, RAM 22.
In addition to 0, a print head, stepping motors 80 and 90, a paper detection sensor 100, an input / output port 240 connected to the external device 5, and a bus 250 are provided.

The sheet discharging operation of the electronic control unit 110 will be described with reference to the flowchart of FIG. This paper discharge routine is started at the time of inputting a page break signal or at the time of line feed. Here, the line feed operation includes not only the input of a line feed signal but also the line feed operation that is automatically performed when the print head reaches the print limit on the right side. It should be noted that the control of the printing operation and the like is not directly related to the present invention and therefore omitted.

When this paper discharge routine is started, first, step S3
At 00 (hereinafter simply referred to as S300, the same applies to other steps), it is determined whether this routine is started by a page feed signal or a line feed. In case of a page break signal,
The process moves to the footer process of S330 described later. On the other hand, if it is started by a line feed instead of a page break signal, the signal is input from the paper detection sensor 100 in the next S310, and then in S320.
It is checked whether or not the end of the sheet 30 reaches the position of the sheet detection sensor 100. And the end of the paper 30 is still the sensor 10
When the position has not reached the 0 position, this routine is ended without doing anything, while when the sheet 30 has reached the end, the process proceeds to the footer process of S330.

The footer processing of S330 is to perform processing in the vicinity of the end portion of the sheet 30 according to the format stored in advance in the RAM 220, and set the distance from the last line to the end of the sheet, print the number of pages, and set a predetermined phrase. Print, etc.

Then, in S340, the footer-processed sheet 30 is discharged by the platen 20 and the roller 50, and in S350, a new sheet 30 'is inserted by the platen 20 and the rollers 40 and 50, and the sheet detection sensor 100 detects the sheet. When the leading edge of the sheet 30 'is detected, the sheet 30' is further fed by the platen 20 and the rollers 40, 50 by a predetermined amount, and this routine is finished.

As described above, in the printing apparatus according to the present embodiment, when the end of the paper 30 is detected by the paper detection sensor 100, the paper 30 is discharged after the end processing is performed.
Insert.

Therefore, even when printing is performed using a paper shorter than the preset paper flow, the footer processing is correctly performed.

In the above embodiment, the sheet feeding means and the discharging means were composed of the columnar platen 20 and the rollers 40 and 50. However, a plate-shaped platen is adopted as the platen, and the sheet feeding means composed of the rollers and the guide plates are used. A paper discharge mechanism may be adopted. Further, the paper feeding means and the discharging means may be constituted by independent mechanisms.

[Advantages of the Invention] By adopting the above-described configuration, the present invention correctly performs footer processing even when printing is performed using a sheet that is shorter than a preset sheet length. for that reason,
It is possible to print in a beautiful format without paying attention to the paper size.

[Brief description of drawings]

FIG. 1 is a block diagram of the present invention, FIG. 2 is a block diagram of an embodiment of the present invention, and FIG. 3 is a flow chart for explaining the operation thereof. 20 …… Platen, 30 …… Paper, 40, 50 …… Roller, 100
…… Paper detection sensor, 110 …… Electronic control unit

Claims (1)

[Claims] 1. A printing unit configured to print on a sheet disposed in a printing unit, a sheet feeding unit configured to feed the sheet to the printing unit, a discharging unit configured to discharge the sheet in the printing unit, and a sheet feeding unit of the sheet feeding unit. A detection unit that is provided in the vicinity and at a predetermined distance from the printing unit to the paper feed side and that detects the trailing end of the paper; a setting unit that sets at least the footer position; and the setting unit and the detection unit. A printing apparatus comprising: a printing control unit that controls the printing unit, a paper feeding unit, and a discharging unit by output; when a detection signal of an end portion of a sheet is input from the detection unit, the printing control unit Printing after the footer processing is performed on the paper by the printing means and the paper feeding means, the paper is ejected by the ejection means, and then new paper is supplied by the paper feeding means apparatus.