JP2007191285A - Paper trailing end detection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such a problem that a paper trailing end is erroneously detected when a paper trailing end detection sensor detects a binding hole in the printed paper in a continuous paper printing device. <P>SOLUTION: The printing device has a printing mechanism part 101 for performing printing; a paper conveying means; a printing control part 104 for controlling the printing mechanism part 101; the paper trailing end detection sensor 102 for detecting the paper trailing end; a non-volatile memory element 108; a display device 103; and a means for performing paper feeding every one dot. In the printing device, a means for calculating a distance of the binding hole in the printing paper and a means for storing the distance in the non-volatile memory element are provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a paper end detection device in a printing apparatus that uses continuous paper as printing paper.

  When the paper end detection sensor detects a binding hole in the print paper, the paper end detection is performed immediately after the paper end detection sensor is activated in order to prevent erroneous detection of the paper end. A paper feed was executed to determine whether the end of the paper was reached. This will be described with reference to FIG.

  In FIG. 2, 201 is a print sheet, 202 is a sheet end detection sensor for detecting the end of the sheet, and 203 is a binding hole in the print sheet.

  The detection of the end of the paper starts printing paper feeding from the state shown in the figure, and the end of paper detection sensor 202 is activated in order to determine whether the end of paper detection sensor 202 has detected the end of paper or the binding hole 203 in the paper. Immediately after this, the paper feed means of the print control unit is activated to execute a certain amount of forward paper feed, confirm the presence or absence of the print paper 201 on the paper end detection sensor 202, and move backward by the same amount as the executed forward paper feed. Paper feeding is executed to determine whether the end of the printing paper or the binding hole in the paper has been detected.

JP-A 63-185751

  In the above prior art, the end of the paper may be erroneously detected depending on the size of the binding hole 203 in the printing paper. An object of the present invention is to prevent erroneous detection of the end of a sheet.

  The above-described objects include a printing mechanism unit that performs printing, a sheet transport unit, a print control unit that controls the printing mechanism unit, a sheet end detection sensor that detects a sheet end, a nonvolatile storage element, a display device, In a printing apparatus having means for feeding paper one dot at a time, this is achieved by providing means for calculating the distance between the binding holes in the printing paper and means for storing the distance in a nonvolatile memory element.

  According to the present invention, the distance of the binding hole in the printing paper is calculated in dot units, the distance is stored in the nonvolatile storage element, and the distance is reflected on the paper feeding means executed when the paper end sensor is activated. This can prevent erroneous detection of the end of the sheet.

  Hereinafter, the present invention will be described with reference to FIGS. 1, 3 and 4.

  FIG. 1 shows a block diagram of an example of the present invention. In FIG. 1, 101 is a printing mechanism unit that performs printing, 102 is a sheet end detection sensor that detects the end of a sheet, 103 is a display device, 104 is a printing control unit that controls the printing mechanism unit, and 105 is a sheet feeding unit by dot. Paper feeding means 106 to perform, 106 is a binding hole amount calculating means for counting the number of binding holes in the paper, 107 is a trailing paper feeding means for feeding paper when the paper trailing edge detection sensor is activated, 108 is a non-volatile storage element, 109 is paper A storage unit 110 stores the distance between the binding holes in the nonvolatile storage element, and a reading unit 110 reads the distance between the binding holes in the sheet from the nonvolatile storage element.

  To adjust the paper end, one or more pages of printing paper are placed on the upstream side of the paper end detection sensor 102, and the paper feed means 105 is executed to start paper feed one dot at a time. When the printing paper moves and the paper end detection sensor 102 detects a binding hole in the paper, the binding hole amount calculating means 106 is executed to start counting the number of paper feed dots. Continuing to feed the paper one dot at a time, the paper feeding means 105 is stopped immediately after the binding hole of the printing paper has completely passed the paper end detection sensor 102, and the paper feeding by one dot is finished. And stop counting the number of paper feed dots. The counted number of dots is stored in the nonvolatile storage element 108 by the storage means 109.

  By performing the above adjustment, in a normal printing operation, the distance of the binding hole in the printing paper is read from the nonvolatile memory element 108 by the reading unit 110, and the distance is executed when the paper end detection sensor 102 is activated. By reflecting the amount in the sheet feeding amount of the trailing sheet feeding means 107, it is possible to prevent erroneous detection of the binding hole in the printing sheet as the sheet termination.

  FIG. 3 is an example of an operation panel used for adjusting the sheet end. In FIG. 3, reference numeral 301 denotes a display device, and 302 to 310 denote switches.

  FIG. 4 is an example of a human interface for adjusting the sheet end. In FIG. 4, a display column 401 is a display example on the display devices 103 and 301 in FIG. 1, and 402 is the contents of the means.

  In this interface, when the end of the paper is adjusted, by pressing the ready switch 304, a series of means from the paper feeding means 105 to the storage means 109 is executed, and the distance of the binding hole in the printing paper is automatically set. Can be calculated automatically.

The block diagram which shows an example of this invention. FIG. 3 is a schematic diagram illustrating a relationship between printing paper and a paper end detection sensor. The top view which shows an example of the display apparatus in this invention. Schematic which shows an example of the human interface in this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Printing mechanism part 102 Paper end detection sensor 103 Display apparatus 104 Print control part 105 Paper feed means 106 Binding hole amount calculation means 107 Termination paper feed means 108 Non-volatile storage element 109 Storage means 110 Reading means 201 Printing paper 202 Paper end detection sensor 203 Printing Binding hole in paper 301 Display device 302 to 310 Switch 401 Panel display 402 Panel display contents

Claims (1)

Printing mechanism section for executing printing, paper transport means, print control section for controlling printing mechanism section, paper end detection sensor for detecting end of paper, non-volatile storage element, display device, paper feed by one dot In the printing apparatus which has a means to perform, the paper end detection apparatus provided with the means to calculate the distance of the binding hole in a printing paper, and the means to memorize | store the said distance in a non-volatile memory element.

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