JPS592871A - Paper feeder for printer - Google Patents

Abstract

PURPOSE:To obtain a paper feeder for printer, having a function that printing can be made at given places all the time even when papers having different sewing mesh intervals are set if the tip of the paper is set to a visible display means. CONSTITUTION:Sprockets 2 and 3 and paper pushers 4 and 5 are provided in mutually facing manner on the front and back sides in the paper feeding direction of a printing means 1 in such a way as to enable the paper pusher 4 on the back side to be seen with eyes. When a printing paper 7 is set before the beginning of printing, the tip 7a of the paper is set to the mark 6 of the paper pusher 4 through the printing means 1, the interval of sewing pitch 8, or the number of lines for one page, is set up in a setter P1, and a printing line number 6LPi or 8LPi per inch is set in the setter P2. In a control circuit MC, the interval between the mark 6 and the printing means 1 and the interval between sewing pitches are judged, and when both the intervals are equal, printing command is soon sent out. When the former is larger than the latter, the paper is fed until it is stopped at the position of the first line following the next sewing pitch 8 on the front side of the printing means 1, and then printing command is sent out.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention provides printing paper with perforations formed at regular intervals in the longitudinal direction and folded along the perforations.
Regarding the paper feeding device of a printer that intermittently transports the paper to the printing unit so as to print line by line, the purpose is to make the work of setting the printing paper in a predetermined position before printing easier and more accurate. It is something to do.

An embodiment of the present invention will be described with reference to the drawings. , 3 have pins 2a and 3a on the outer periphery of both ends.
Paper pressers 4 and 5 are arranged separately facing the pins 2a, 3tx and sandwiching the paper feed path. It is visible from the outside of the machine frame, and marks 6.6 are formed on the surface.

The printing paper 7 has holes 7h formed at one-leg intervals on both ends of the longitudinal direction so that the pins 2a and 3α of the sprocket 2°3 can be fitted therein, and perforations 8 are formed at regular intervals in the longitudinal direction along the direction crossing the longitudinal direction. , and are folded and laminated along the perforations 8.

Next, the control circuit will be explained with reference to the block diagram of FIG. 5. The setting section P1 sets the distance between the perforations 8 and outputs the set value SO (row).

Setting section P2 sets the print mode to 6 lines per inch or 8 lines per inch, and sets the setting value (iLP
i, 8LPZ' is output.

MC is a well-known microcomputer (microcomputer)
A program for performing control based on the flow shown in FIG. 6 is stored.

The feed control section controls the paper feed section F including the sprocket 2 based on a feed command from the microcomputer MC.

The flow shown in FIG. 6 will be explained.

It judges the key operation that commands the initial feed, and when it is on, it judges whether the current number is zero (the contents of the line counter are - the beginning of the page), and when it is off, the judgment that the current number is zero is denied. When returning to the main flow. When the determination that the current number is zero is affirmed, the set value SO input from the setting section P1 is stored in the register S]. Next, the setting section P1
It is determined whether the input is 6LPi or 8LPi, and based on the result of the determination, the number of printed lines X( In Fig. 4), the paper feed unit F controls the feed control unit so that it feeds the paper by (Si X) lines, and when 5i=X (
(Fig. 3) controls the feed control unit so as not to feed the paper, and when neither of these conditions exists, that is, when Si <, X (Fig. 2), the register Si that stores the number of lines S
O is added and stored, and the process returns to the determination of St>X.

The present invention has the above-described configuration, and in order to set the printing paper 7 before printing, the longitudinal end 7a of the paper is passed through the printing means and then placed so as to match the mark 6.6 of the paper presser 4.4. Next, set the interval between perforations 8, that is, the number of lines for one page in the setting section P1, and
In step 2, set 6LPi or 8LPi, that is, the number of printing lines corresponding to the distance from mark 6, i5 to mark 1.

For example, as shown in Figure 3, when the distance (X) between the mark 6.6 and the hammer 1 is equal to the 80th perforation interval (SO), the first line of the new page of paper is facing the hammer 1. Therefore, the paper is not fed and the paper feed is controlled by the print command.

Furthermore, as shown in Fig. 4, when the interval (SO) between mark 6.6 and No. 1 marker 1 is longer than the interval 00 of sewing machine 8, Si':>X, so the paper feed is equal to (Si The paper stops with the first line following the next perforation 8, that is, the first line of the new page, facing the front of the hammer 1.
Follows control by subsequent print commands.

For example, as shown in Figure 2, if the distance between mark 6.6 and number 1 mark 1 (N is longer than the distance between perforations 8 (SO)), it becomes 5i (X, so the value stored in register Si is S
O is added and stored, and both values are compared again. When Si > X, the same process is repeated. When 5i=X or Si >

In this embodiment, the mark 6.6 for aligning the starting edge of the paper 7 is formed on the paper presser, but it may be provided on another machine frame.

As described above, according to the present invention, in order to match the leading edges of the paper in the moving direction, the printing means is fixedly arranged so as to be visually visible and spaced apart from the printing means in the moving direction of the paper and facing the paper transport path. a display 6; a first setting means P1 for generating a signal having data regarding the number of printed lines corresponding to the interval between the perforations of the paper; and a signal having data regarding the number of printed lines corresponding to the distance from the display means to the printing means. The data of the signal of the second setting means P2 which generates the same value as that of the second setting means P2 and the signal of the closing and resetting means in connection with the operation are compared, and based on the comparison, the transporting means moves the paper so that the first line following the first perforation is By providing a control circuit MC that moves so as to face the printing means and then stops, the setting means can be placed opposite the display means that allows the starting edge of the paper to be visually seen when replacing paper, etc. If you set
Even if you load paper with large perforation intervals, always make sure that the first line following the perforation of the paper is

[Brief explanation of drawings]

Fig. 1 is a perspective view of the paper feed mechanism of this embodiment, and Fig. 2 is a 54
(Explanatory diagram when x, Figure 3 is an explanatory diagram when Si = X, Figure 4 is an explanatory diagram when Si>X, Figure 5 is a block diagram of the control circuit, Figure 6 is It is a flowchart regarding a program for initial feeding. In the figure, !...Hammer 2.3 constituting the printing means... Sprocket 4.5 constituting the transfer means.
...Paper presser 6 constituting the transport means...Marks 7 constituting the display means...Printing paper Pl...Setting means P2 for generating a data signal for the perforation interval...Setting means P2 for generating the data signal for the interval between the hammer and the mark Setting means Me for generating data signals... Miter I2 computer configuring the control circuit Name of agent Patent attorney Nagoya - Yusai 5 Figure 76 (Collar 9

Claims (1)

[Scope of Claims] Transfer means 2, 3, 4 capable of holding a sheet 7 having perforations formed at regular intervals in the longitudinal direction in a direction crossing the longitudinal direction so as to move or stop the paper 7 along the longitudinal direction. .5
, a printing means 1 arranged opposite to the paper transport path and capable of printing by moving close to and away from the paper; a display means 6 fixedly arranged so as to be visible facing the paper transport path; a first setting means P1 for generating a signal having data regarding the number of printed lines corresponding to the interval between perforations of the paper; and a display means. a second setting means P2 which generates a signal having data regarding the number of printed lines corresponding to the distance from the printing means to the printing means; and a control circuit MC for moving the paper so that the first line following the first perforation faces the printing means using the transporting means and then stopping the paper.