JPS5831784A - Driving of printer - Google Patents

Abstract

PURPOSE:To obtain an inexpensive printer of a simplified structure for bankbook, etc. by using a system in which printing papers are directed in the sending direction by turning a pinch roller and then sent to a given position while being held by the pinch roller. CONSTITUTION:When a printing paper 41 is inserted into between printing paper guides 33 and 33', it is selected by an optical sensor 34, pinch rollers 37 and 37' turn inwardly at an interval, respectively, and the printing paper 41 is directed to between printing paper pathways 40 and 40'. When the tip of the printing paper 41 is stopped by a stopper 35 and its lower end is detected by an optical sensor 36, the rotation of the pinch rollers 37 and 37' is stopped. Then, the pinch roller 37 is pressed on the pinch roller 37' while putting the paper 41 between them by the attraction of a spring 39, the stopper 35 is separated from the lower end of the paper 41, and then the pinch rollers 37 and 37' turn to send the paper 41 to printing position.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for driving a printing device, and more particularly to an improvement in a method for driving a printing paper (medium) insertion and ejection mechanism.

Printing devices such as line printers and passbook printing devices are examples of output devices such as information saturation devices.

The printing section in such a printing device has conventionally had the structure shown in FIGS. 1 and 2.

In figure 1, lti print head, zhiro platen, 3
．． 3- is a printing paper guide, 4 is an optical sensor.

5.5' Hiropi/Chi roller, 6 is optical sensor, 7 company printing paper stopper, 8 Hiro movable printing paper guide.

Reference numeral 9 denotes an i-gnet gun for driving the scissors movable printing paper guide 8, and 10.10'llj printing paper path 3A. And 11 is the printing paper (medium).
is inserted between the printing paper guides 3 and 39 from above. Then, it is stopped at the printing paper stopper 7,
When the lower end of the armpit printing paper 11 is detected by the optical sensor 6, the detection signal causes the shim rollers 5 and 51 to come into pressure contact with the printing paper 11, and the printing paper stopper 7 retreats or rotates to remove the printing paper 110. away from the bottom edge. The pinch roller 5 (and 59) is driven by the detected signal, and the printing paper 11 is sent downward. Then, when the upper end of the printing paper 11 is detected by the optical sensor 4,
Based on this detection signal, the pinch roller 5 (and s l )
will be stopped. Next, print paper 1 is printed by print head 1.
1, the desired printing process is performed.

When sending the printing paper 11 downward, the movable printing paper kite 8 is driven upward (towards the printing head l) by a magnetic plunger 9 driven based on a detection signal from the optical sensor 6, and the movable printing paper kite 8 is driven upward (towards the printing head l) to send the printing paper 11 is guided to the printing paper pathway 10.

Further, in the printing apparatus shown in FIG. 2, pinch rollers 5 and 5', optical sensor 6, and printing paper stopper 7 are located below the print head 1 and platen 2.

Even in such a printing device, the printing paper guides 3 and 3'
The printing paper 11 inserted between the printing paper stopper
Then, when the optical sensor 6 detects the lower end of the printing paper 11, the detection signal causes the pinch p-tools 5 and 59 to come into pressure contact with the printing paper 11 and press the printing paper stopper. is separated from the bottom edge of the printing paper 11. Then, by this detection signal, pinch 4-2-5 (
and 5') are driven, and the printing paper 11 is sent downward. When the upper end of the printing paper 11 is detected by the optical sensor +4, this detection signal causes the Rubinci p-5y-5 (and 5 to stop). Next, desired printing processing is performed on the print paper 11 by the print head 1.

When feeding the printing paper 11t-downward, the printing paper 11t- is driven upward (towards the printing head 1) by the 8 movable printing paper guides and the magnetic plunger 9 which is driven based on the detection signal from the optical sensor 6. Guide to printing paper pathway 10.

In such a printing device, the movable printing paper guide 8 is effective in guiding the printing paper 11, but in order to guide both sides of the printing paper 11, the movable printing paper guide 8#'i is equipped with a magnet. A large value is required for the driving force of the plunger 9. 1' When the printing fill is inserted, the movable printing paper guide 8t is operated to guide the mosquito printing paper 11 toward the printing paper pathway lO direction and the subsequent printing operation is performed, so the printing paper insertion (suction) time is long. However, it is difficult to increase the efficiency of the printing process.

Furthermore, in the printing apparatus shown in FIG. 2, printing cannot be performed while the movable printing paper guide 80 is operating (while setting the medium), making it impossible to improve printing processing efficiency.

The present invention eliminates the drawbacks of the printing paper guide mechanism in conventional printing devices, provides a simpler mechanism, and can shorten the printing paper insertion (acceptance) time as well as the printing processing time. The present invention is intended to provide a method for driving a printing device.

Therefore, according to the present invention, in a printing apparatus including a print head, a platen, a pair of pinch rollers for feeding print paper, a print paper detector, and a print paper stopper,
A pair of pinch rollers F- are placed in a separated state, and the pinch rollers are rotated based on a printing paper insertion detection signal to guide the printing paper in its feeding direction and lock it to the printing paper stopper. One end of the printing paper is detected at the stop position, and based on the detection signal, the pinch roller is used to feed the printing paper at a predetermined position while pinching the printing paper, and performs a predetermined printing process on the printing paper. A method of driving an apparatus is provided.

The present invention will be explained in detail below with reference to examples.

FIG. 3 shows the printing mechanism of the printing device according to the present invention.

In the figure, 31 is a print head, 32 is a platen,
83. 33' is a printing paper (medium) guide.

34 is an optical sensor. Also, a printing paper stopper is rotatably supported by a shaft 35A.

36 is an optical sensor, 37, 371 is a pinch ruler,
Reference numeral 38 denotes a lever that supports the pinch roller 37 and rotates around the shaft 38A by being attracted by a spring 39 and a plunger magnet (not shown) which attracts the force in the opposite direction to the spring 39. printing paper pathway,
41 is a printing paper (medium).

Note that the optical sensors 34 and 36 are provided with transmissive or reflective optical sensors, and also with the pinch roller 37.
, 379 are each connected directly or through gears to a motor (not shown), and are rotatable in both clockwise and counterclockwise directions in the drawing. Further, the printing paper stopper 35 can be linked with the operation of the lever 38, and when the p-bin plow 2-37 rotates while still touching the pinch row 9-37' due to the operation of the lever 38, the printing paper stopper 35 Rotate clockwise in the drawing to escape from the printing paper feed path.

In such a front printing device, when the printing paper 41 is inserted between the printing U-id 33 and 339, the optical sensor 34 detects this. and the optical sensor 34
In response to the detection signal, the pinch rollers 37 and 379 rotate inward, that is, in the printing paper pathway direction, while being separated from each other. In other words, the lever 38! Pinch low two 37.
By the rotation 37', the printing paper 41 is guided between the printing paper pathways 40 and 401 in a direction in which curling, if any, exists at the leading edge of the printing paper 41 is corrected.

The tip of the mosquito printing paper 41 is the printing paper stopper 35.
When the lower end of the M-print paper 41 is detected by the optical sensor 36, the rotation of the pinch rollers 37, 37' is stopped in response to the detection signal.

then the operation of the plunger magnet is stopped;
Due to the suction of the spring 39, the pinch roller 37 is pressed against the pinch roller 379 while holding the printing paper 41 between them.
In addition, the printing paper stopper 35 rotates to stop the printing paper 4.
Move away from the bottom of 1.

The pinch rollers 37 and 379 are then rotated and the paper 41 is fed between paper pathways 40 and 40'.

When the upper end of the print paper 41 is detected by the optical sensor 34, the rotation of the pinch rollers 37 and 37' is stopped in response to this detection signal or after a predetermined period of time has elapsed since the detection. feeding operation is stopped.

Print processing is performed on the print paper 41 by the three temporary print heads.

When the printing paper 41 that has been subjected to a predetermined printing process is discharged, the pinch roller 3
7 and 371 rotate in the opposite direction to the direction when sucking the printing paper, and send the printing paper 411t upward.

When the lower end of the printing paper 41 is detected by the optical sensor 36, the pinch roller 37,
379 is stopped, and the suction operation of the pushinger magnet shown in the figure is performed, the lever 38 is rotated, the pinch roller 2-37 is separated from the pinch roller 379, and the printing paper stopper 35 is moved to the printing paper. Inserted into the feed path.

The printing method according to the present invention does not require the movable printing paper guide in the conventional printing mechanism. Therefore, mechanical parts constituting the movable printing paper guide and pusher magnets for driving the same are unnecessary, and the printing apparatus can be mass-produced, lowered in price, and improved in reliability.

Also, the pinch roller can be used without using the movable printing paper guide.
Since the printing paper is directly fed by the printer, the time for inserting (sucking) the printing paper can be shortened, and the printing process can be made more efficient.

[Brief explanation of the drawing]

1rM and 2 are diagrams showing the configuration of a conventional printing device,
FIG. 3 is a diagram showing the configuration of a printing device according to the present invention. In the figure, 1.31・・・・・・・・・・・・ To print, de. 2.32・・・・・・・・・Platen. 5, 5', 37.37'...pinch roller 24,
s, 34.36...Optical sensor. 11, 41 ...... Printing paper (medium). Figure 1 Figure 2

Claims (1)

[Claims] In a printing device equipped with a print head, a platen, and a pair of pinch rollers for feeding the print paper, a print paper detector and a print paper stopper, the pair of pinches *-2- are separated to be in good condition, and the print paper is inserted. Based on the detection signal, the pinch guide is rotated to guide the printing paper in the feeding direction and locking it to the printing paper stopper, and detecting one end of the printing paper at the locking position, and detecting the printing paper. A method for driving a printing device, characterized in that the pinch roller feeds the printing paper to a predetermined position while pinching it based on a signal, and performs a predetermined printing process on the printing paper.