JPS6183073A - Paper feed method of printing apparatus - Google Patents

Abstract

PURPOSE:To prevent the deformation of the leading end of paper when the attachment and detachment of a paper cassette was performed, by rotating a paper feed means to the direction reverse to that at the time of printing to return a definite amount of copy paper after printed discharge paper was cut. CONSTITUTION:When an apparatus cover is opened, error printing is applied to copy paper consisting of discharge paper 13 and a journal paper 14 by a printing head. When a winder motor 17 is rotated at this time, a wind-up spool receives repulsive force by a tension arm 6 to race the motor 17. In this state, a paper feed belt FF10 is rotated to a counterclockwise direction and the motor 17 is stopped when the feed amount of the discharge paper 13 reached a predetermined amount (one page) alpha and the paper 13 is further fed by alpha-amount to stop a feed motor 15. Then, the discharge paper 13 is cut. Thereafter, the motor 15 is rotated to a counterclockwise direction in a definite amount to return the leading end of the discharge paper 13 to a paper delivery position A. Therefore, even if a paper cassette 1 is detached in this state and again mounted, the leading end of the discharge paper is not deformed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feeding method that is applied to a printing device that prints on copy paper consisting of journal paper and release paper such as a receipt.

[Conventional technology]

For example, automated teller machines, accounting machines, etc. for banks have a built-in printing device that prints transaction records, error logs, etc., and the printing device prints on two continuous sheets of copy paper, and prints one sheet of copy paper. As a journal paper for record keeping, one sheet of roll paper, mafcItD, is cut into the length of one page as a release paper for receipts or error messages for maintenance, and then released to customers or staff. ing.

Incidentally, in this type of printing device, recently, a paper storage section has been developed in order to make it easier to replace the copy paper.

The paper feeding means and the paper winding means are integrated into a paper cassette, and when copying paper is replaced, this paper cassette is replaced. Due to the arrangement of components, a gap of a certain width is formed between the paper and the cut knife installed in the printer body to cut the ejection paper, and as a result, the conventional paper feeding method has the following problems. will occur.

[Problem that the invention seeks to solve]

In other words, if a gap is formed between the paper feeding position of the paper cassette and the cut knife, when one page of ejected paper is cut, the leading edge of the next page of ejected paper will be at the paper feeding position of the paper cassette. It will stand out from the

Therefore, if the paper cassette is removed from the printing device main body in this state and then reinstalled into the printing device main body, the leading edge of the ejected paper protruding from the paper feeding position will come into contact with parts around the printing device main body when it is reinstalled. This causes deformation such as curling or bending, and the deformed paper gets caught on the leading edge of the ejected paper, the cut knife, and surrounding parts, resulting in a jam when the paper is fed for the next printing. Occur.

The present invention has been made in order to solve such problems, and it is an object of the present invention to realize a paper feeding method that can prevent the occurrence of jams caused by attaching and detaching a paper cassette to a printer main body. be.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention performs printing immediately before removing the paper cassette from the printing device, and after the printed ejection paper is cut with a cut knife, the paper feeding means is rotated in the opposite direction to the printing direction. The copy paper consisting of the ejection paper and the journal paper is then returned to a certain direction in a direction opposite to the normal feeding direction.

[Effect]

According to the above-mentioned means, since the copy paper is returned by a certain amount in the direction opposite to the normal feeding direction, the leading edge of the ejected paper no longer protrudes from the paper feeding position of the paper cassette, and the paper cassette is once removed from the printer main body. Even if the paper is reinstalled after the paper has been removed, the leading edge of the ejected paper will not be deformed, such as curling or bending, which may cause a jam.

[Implementation 11] Examples will be described below with reference to the drawings.

First, to explain the printing device, Fig. 2 is a side view showing the structure of the printing device to which the present invention is applied, including the paper force center and its surrounding area, and Fig. 3 is a partially enlarged view of the printing device.
is a paper cassette. This paper cassette 1 includes a cassette case 2, which is a paper storage section, and a cassette case 2 provided at the top of the cassette case 2. A paper winding section 4 having a J3k tension arm 6 tensioned by a spring 5, and a 7'-4J provided at the bottom of the cassette case 2.
7.8 and 9, a paper feed belt 10 with a sprocket bin wound around the pulley 7.8, a pulley 3 provided on the shaft of the winding spool of the paper winding section 4, and the pulley 9. A belt 11 for transmitting power to the pulleys 7 and 9, and gears 12 provided coaxially with the pulleys 7 and 9, respectively.
, 22, and can be attached to and detached from a printing device such as an automatic teller machine.

Of these parts, the pulley 7.8, the paper feed belt 10, and the gear 12 constitute a paper feed 9 means for feeding the copy paper, which will be described below. , tension arm 6, pulley 9,
The belt 11 and the pulley 22 constitute a paper winding means.

Reference numeral 13 indicates a discharge paper such as a receipt or an error message, and 14 indicates a journal paper, both of which have sprocket holes that fit into sprocket pins provided on the paper feed belt 10.

The ejection paper 13 and the journal paper 14 are stacked on top of each other, and are stored in the cassette case 2 in a pre-folded state as copy paper for two-sheet copying, and are folded along the outer periphery of the cassette case 2. It is pulled out and set in a predetermined state.

That is, the discharge paper 1 pulled out from the cassette case 2
3 and journal paper 14 are routed around the bottom surface of the cassette case 2, and each sprocket hole is fitted with a sprocket pin of a paper feed belt 10 protruding from the bottom surface immediately before the paper feeding position A on the bottom surface. From the paper feeding position A, only the journal paper 14 is guided to the paper winding section 4 via the tension arm 6, and its leading end is fixed to the winding spool of the paper winding section 4.

In this state, the discharge paper 13 is held along the bottom surface of the cassette case 2 by close contact with the journal paper 14 and fitting with the sprocket bin.

15 is a feed motor, 16 is a gear attached to the rotating shaft of the feed motor 15, 17 is a winder motor having an idle mechanism using a friction member (not shown), 18 is a gear attached to the rotating shaft of the winder motor 17, These are provided on the printing device main body side, and when the paper cassette 1 is installed in the printing device main body, the gear 16
．． 18 are adapted to mesh with gears 12 and 22 on the paper cassette 1 side, respectively.

A pair of cutting knives 19 and 20 are arranged on the printer side with a gap of a certain width from the paper feed position A of the paper cassette 1, and are operated by a solenoid (not shown). 21 is a paper guide.

In the above-described configuration, the paper cassette 1 is attached to the main body of the printer with the ejection paper 13 and the journal paper 14 set therein as described above.

Then, when a print signal is input to the printing device, printing is performed on the discharge paper 13 and the journal paper 14 by a print head (not shown) arranged to face the bottom surface of the cassette case 2 of the paper cassette 1. This release paper 13
The journal paper 14 is of a pressure-sensitive coloring type, and copy printing can be performed with two sheets stacked one on top of the other.

Further, during the above-described printing, the ejection paper 13 and the journal paper 14 are fed each line each time one line is printed. Paper feeding at this time is performed by transmitting the rotational force of the feed motor 15 to the pulley 7 via the gears 16 and 12, and the paper feeding belt 10 rotating together with the pulley 7.

In this paper feeding, the release paper 13 and the journal paper 14 are separated by a separating means (not shown) near the paper delivery position A, and the release paper 13 advances toward the direction between the cant knives 19 and 20. On the other hand, the journal paper 14 advances in the direction of the tension arm 6 and is wound onto the winding spool of the paper winding section 4, but this winding is carried out by the winder motor 17.
This rotational force is achieved by rotating the take-up 9 spool in a fixed direction via the gears 18, 22 and pulleys 9, 3.

When the ejection paper 13 and the journal paper 14 are fed out from the paper feeding position itA by a length corresponding to one page, the cut knife 20 is moved downward by a solenoid (not shown) to cut the ejection paper 13. The cut release paper 13 is released to the customer as a receipt.

When printing a normal transaction record, the above-mentioned operation is performed, but at this time, the leading end of the ejected paper 13 protrudes from the paper feeding position A as shown in FIG. 1 is removed from the printer main body and then reinstalled, the leading edge of the ejected paper 13 hits the surrounding parts of the printer main body and becomes deformed as shown by the broken line, which causes the jam to occur. becomes.

By the way, it is generally necessary to completely remove the paper cassette 1 when replacing paper or when performing maintenance and inspection of the printing device. In these cases, information indicating that the cover of the apparatus has been opened 9, the end of paper, or an error or alarm of a specific part is generated.

Particularly in automatic teller machines, when any of these situations occur while handling cash, a message indicating the situation is printed by the printing device.

The present invention focuses on the fact that the situation in which the paper cassette 1 is removed is included in the situations and conditions in which the message is marked 'ff-. Make full use of all that is done.

Note that in a printing device installed in such an apparatus that does not perform printing, it is necessary to provide a control means for realizing the paper feeding method described below before removing the paper cassette 1.

FIG. 1 is a flowchart showing an embodiment of the paper feeding method of the present invention in the above-described printing apparatus.

First, when the cover of the device is opened or an error or alarm is detected in any part of the device, the print head of the printing device prints out the error on the copy sheet consisting of the discharge sheet 13 and the journal sheet 14. Perform printing.

When this error is printed, the winder motor 17 shown in FIG.
The gear 18 is rotated counterclockwise as shown by the arrow, and the gear 22. Pulley 9. Belt 11. The take-up spool of the paper take-up section 4 is rotated in the clockwise direction indicated by the arrow via the pulley 3 to take up the entire journal paper 14.

/The sprocket hole of the journal paper 14 is fitted with the sprocket pin of the paper feed belt 10, and at this time, the paper feed belt 1o is in a stopped state, so the journal paper 14 is attached to the take-up spool of the paper take-up section 4. When it is wound up, the tension arm 6 is pulled downward against the tensile force of the spring 5.

When the tension arm 6 is pulled down by a certain amount and the winding system spool receives a reaction force, the winder motor 1
7 idles due to the idling mechanism.

In this state, rotate the feed motor 15 clockwise,
Paper feed 9 belt 1 via gears 16, 12 and pulley 1
When the discharge paper 13 and the journal paper 14 are fed by rotating 0 in the counterclockwise direction, the discharge paper 13 advances in the direction between the cut knives 19 and 20, and the journal paper 14 advances in the direction of the tension arm 6. Proceed to. At this time, the gear 18 is rotated again by the winder motor 17, and the journal paper 14 is wound up by the take-up spool.

Then, when the feed amount of the discharge paper 13 by the feed motor 15 reaches a predetermined amount (one page) - α, the winder motor
When the feed motor 15 is rotated clockwise for α minutes and then stopped, the tension arm 6 is moved upward by the tensile force of the spring 5, and the journal paper 14 is moved upward by a predetermined amount. was raised to
Further, the discharge paper 13 passes between the cut knives 19 and 20 and stops at a predetermined position.

Next, the cut knife 20 is moved downward by a solenoid (not shown) to cut the discharge paper 13, and then the feed motor 15 is rotated counterclockwise by a certain amount. As a result, the discharge paper 13 and the journal paper 14 are sent in the opposite direction to the above-mentioned feeding direction, the tension arm 6 is pulled down again, and the leading end of the discharge paper 13 returns to the paper feeding position A. At this time, the paper winding section 4 remains in a stopped state.

Therefore, even if the paper cassette 1 is removed from the printing device in this state and installed again after maintenance and inspection, the leading edge of the ejected paper 13 is at the 7w1 feeding position iA, so the area around the printing device is It does not cause deformation due to contact with parts, etc.

〔Effect of the invention〕

As explained above, the present invention has the following features: 7) 1) Printing is performed immediately before the paper is removed from the printing device, and after the printed ejection paper is cut with a cut knife, the paper feeding means 9 is moved in the opposite direction to that at the time of printing. By rotating the copy paper in the direction of Since the paper cassette does not protrude and the leading edge of the ejecting paper does not deform even when the paper cassette is attached or removed, it is possible to prevent jams from occurring due to deformation of the leading edge of the ejecting cassette. It will be done.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing an embodiment of a paper feeding method for a printing device according to the present invention, FIG. 2 is a side view showing a paper cassette of a printing device to which the invention is applied and grooves around it, and FIG. 3 is a partially enlarged view of FIG. 2. 1: Paper cassette 2: Cassette case 3: Pulley
4: Paper winding section 5 Two springs 6 Two tension arms 7, 8, 9: Pulleys 10: Paper feed belt 11
: Pel) 12, 22: Gear 15: Feed motor 16: Gear 17: Winder motor 18: Gear 1
9, 20: Kasoto knife 21: Paper guide patent Applicant Oki Electric Industry Co., Ltd. Agent Patent attorney Takashi Kanakura Niwa 1- Tsumugi 2- Tsumugi 3 Figure 21 1J A 1, Paper cassette 2 Cassette case 4: Paper winding section 6 Te//Yon arm 10° paper feed belt 13' Ejection paper 14, journal paper 15, feed motor 17: Wainoda motor 19.20' Kanoto knife

Claims (1)

[Scope of Claims] 1. A paper storage section that folds and stores copy paper consisting of two overlapping sheets of journal paper and ejection paper for receipts or error messages, and a paper storage section that is pulled out along the outer periphery of the paper storage section. a paper cassette that is removably attached to the main body of the printing apparatus, and includes a paper feeding means for feeding the copied paper, and a winding means for winding the journal paper among the copy papers unwound by the paper feeding means; A print head that prints on copy paper, and a cut knife that is arranged at a gap of a certain width with respect to the paper feeding position at the bottom of the paper cassette and that cuts the ejected paper of the copy paper after printing. A paper feeding method for a printing device, in which printing is performed immediately before the paper cassette is removed from the printing device main body, and along with this, the ejected copy paper that has been fed by the paper feeding means and passed through the paper feeding position is cut with a cut knife. A method for feeding paper in a printing device, characterized in that the leading edge of the ejected paper is returned to a paper feeding position by rotating a paper feeding means in the opposite direction to that for printing and feeding the copy paper backwards after the paper has been cut.