JPH02106539A - Alignment method for continuous sheet - Google Patents

Abstract

PURPOSE:To facilitate setting of a continuous sheet and a reduction in time for setting the sheet by providing sheet feed rollers and sheet condition detecting sensors on a printer's sheet passage where the sheet travels. CONSTITUTION:The length of a page of sheet is previously stored in a sheet length storage memory 7, and when both sheet length detecting sensors 1, 1' detect the sheet entered at a sheet inlet A, sheet feed rubber rollers 2, 2' rotate in B, B' directions. When either of sheet-parallelism detecting sensors 3, 3' does not detect the sheet, only one of the sheet feed rubber roller 2 or 2' on the side where the sheet is detected, is stopped, and the other of the sheet feed rubber roller 2 or 2' on the side where the sheet is not detected, is rotated. Thus, the position of the sheet is corrected so as to be parallel to the direction of travelling, and all the sheet feed rubber rollers 2, 2', 2'' are rotated to shift the sheet in C direction.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for aligning continuous paper in a printer, and in particular, correction of skew of paper and perforation of paper when continuous paper is set in a printer and run. Regarding alignment.

[Conventional technology]

Conventionally, there was no automatic parallel alignment method for correcting the skew of continuous paper in the printer, and alignment of the perforation alignment position of the printer device and the perforation of the continuous paper was done by operating a paper feed switch. A method has been adopted in which the position of the perforation of continuous paper is adjusted by marking a detection mark on the paper and detecting the mark.

[Problem to be solved by the invention]

However, with the conventional printer method described above, when setting continuous paper in the printer, if the paper is not parallel to the running direction, the paper must be aligned manually, and the continuous paper perforation machine It is necessary to press a switch to align the eyes. In addition, in order to automatically align the perforations, the paper must be marked. If the paper is not marked, the perforations cannot be automatically aligned, and if the paper is limited, there will be a problem. There is.

[Means to solve the problem]

The alignment method for continuous paper according to the present invention includes a paper path through which the paper runs, and three channels for running the paper, which are provided on both sides and in the center of this paper path in a straight line in the width direction of the paper. a pair of paper parallelism detection sensors provided on a straight line in the paper width direction on both sides of the paper path behind the paper feed roller; and a pair of paper parallelism detection sensors provided on the paper path behind the paper parallelism detection sensor. When only one of the paper length measurement start detection sensor, which is provided, detects the starting edge of the paper, and the paper travels a predetermined length, and the paper parallel detection sensor, detects the paper. The present invention is characterized in that only one of the paper feed rollers on the side of the paper parallelism detection sensor that detects the paper is stopped from rotating.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

1 and 2 are a plan view and a vertical sectional view, respectively, of a paper path 5 in an embodiment of the present invention. Paper presence detection sensors 1.1' for detecting that paper enters the paper passage A from the paper passage 5 are provided on both sides of the paper passage 5 on a straight line in the width direction of the running paper. Paper feeding rubber rollers 2゜2', 2'', which can rotate and stop independently, are provided on both sides and the center of the paper path 5 on a straight line in the width direction of the paper, and the paper moves in parallel. Paper parallelism detection sensors 3 and 3' are provided on both sides of the paper path 5 on a straight line in the width direction of the paper. (Length of one page from perforation to perforation of continuous paper) Paper length measurement start detection sensor 4゜4 that notifies the paper position alignment control unit 6 in Fig. 3 of the start of measurement
' is installed in the paper path 5 of the printer device.

FIG. 3 is a block diagram showing the control system in the embodiment shown in FIG. 1, and is a paper alignment control section 6 that issues and receives control commands for the position of paper contained in the control section of the printer. , a paper length storage memory 7 included in the paper alignment control unit 6 that can arbitrarily store the length of continuous paper in advance, and a paper alignment mechanism that operates according to commands from the paper alignment control unit 6. Drive circuit 8
The sheet positioning mechanism drive circuit 8 is composed of a sheet positioning mechanism section consisting of sheet feeding rubber rollers 2, 2', 2'', etc., which actually carry out the running and positioning of the sheet.

FIG. 4 is a flowchart of the operating procedure of the embodiment shown in FIGS. 1, 2, and 3.

The overall operation of this embodiment will be described below with reference to FIG. 1, FIG. 2, FIG. 3, and FIG. 4.

The length of one page of paper is stored in advance in the paper length storage memory 7 shown in Fig. 3, and step 1 of Fig. 4(a) is performed.
0, from the paper entrance A in Figures 1 and 2 to the paper path 5.
Insert continuous paper into the .

When both the paper presence detection sensors 1 and 1' detect the paper entering from paper population A as shown in step 11, the paper feeding rubber rollers 2, 2', 2'' are activated as shown in step 12.
rotate in the B, B', and B'' directions, respectively.C in Figure 2
When the paper parallelism detection sensors 3 and 3' detect that both paper sheets have been conveyed as shown in step 13, it is determined that the paper sheets are parallel. The paper feeding rubber roller 2.2' continues to rotate in the B and B' force directions and continues to move the paper in the C direction in FIG. However, paper parallelism detection sensor 3.3'
If one of them does not detect paper, only one of the paper feeding rubber rollers 2 or 2' on the side that detected paper is stopped, and as in step 14, the paper feeding rubber roller 2 or 2' on the side that did not detect paper is stopped. By rotating the other rubber roller 2 or 2', the position of the paper is corrected and parallel to the running direction, and all the paper feeding rubber rollers 2゜2', 2'' are rotated again.
Rotate to move the paper in direction C. During this time, the paper feeding rubber roller 2'' does not stop rotating in the B'' direction under either of the above two conditions.

As the paper moves in the C direction, when both the paper length measurement start detection sensors 4 and 4' detect that the paper has been conveyed as shown in step 15, the paper feeding rubber roller 2 moves as shown in step 17. . Start measuring the length of the moving paper until it reaches the length of the paper that was placed. However, paper length measurement start detection sensor 4.4'
If one of them does not detect paper, only one of the paper feeding rubber rollers 2 or 2' on the side that detected paper is stopped, and as in step 16, the paper feeding rubber roller 2 or 2' on the side that did not detect paper is stopped. By rotating the other rubber roller 2.2', the position of the paper is corrected and made parallel to the running direction. During this time, the paper feeding rubber roller 2'' is
Rotation in the B'' direction does not stop under either of the following conditions.

When both paper length measurement start detection sensors 4 and 4' detect paper, the paper feeding rollers 2 and 2' are moved.

2'' stops temporarily and then starts rotating again in the directions B, B', and B'', and at the same time starts measuring the moving paper based on the paper length stored as described above. Then, when the paper positioning control unit 6 in FIG.
As indicated by 0, the operation of the paper feeding rubber rollers 2.2', 2'' and all sensors is stopped.

That is, after the starting edge of one continuous paper passes the paper length measurement start detection sensor 4, 4', the continuous paper is fed by one page, and the first sewing machine mouth passes the paper length measurement start detection sensor 4, 4'. The paper is stopped when the position is reached. Therefore, by positioning the paper length measurement start detection sensor 4.4' at a predetermined distance from the printing line of the printer,
When the paper is stopped in step 20, the starting edge of the continuous paper can reach the print line.

〔Effect of the invention〕

As explained above, the present invention provides a rubber roller for paper feeding and a detection sensor for detecting the condition of the paper in the paper path in which the paper moves in a printer that uses continuous paper. Automatically performs the parallel alignment of continuous paper and aligning the perforations of continuous paper to the specified positions, which previously took time, reducing the time it takes to set paper and allowing anyone to easily set continuous paper. There is an effect.

2 is a block diagram and a flowchart showing an operation procedure.

1.1'...Paper presence detection sensor, 2.2'.

2''...Rubber roller for paper feeding, 3.3'...Paper parallel detection sensor, 4,4'...Paper length measurement start detection sensor 5...Paper path, 6...Paper positioning control section , 7... Memory for storing paper length, 8... Paper alignment mechanism drive circuit, 9... Paper alignment mechanism section.

Claims (1)

[Claims] A paper path through which the paper runs, three paper feed rollers for running the paper in a straight line in the width direction of the paper on both sides and the center of the paper path, and three paper feed rollers behind the paper feed rollers. A pair of paper parallelism detection sensors are provided on a straight line in the paper width direction on both sides of the paper path, and a paper length measurement start detection sensor is provided on the paper path behind the paper parallelism detection sensors. a measuring means for measuring when the paper travels a predetermined length after detecting the starting edge of the paper; A continuous paper positioning method characterized by stopping the rotation of only the paper on the side of the paper parallelism detection sensor.