JP2572110B2 - Printer print medium ejection method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for discharging a print medium of a printer in an automatic deposit / withdrawal transaction apparatus, an automatic passbook entry apparatus, or the like.

<Conventional technology> In automatic deposit and withdrawal transaction devices and automatic passbook entry devices,
A passbook / slip printer 1 shown in FIG. 1 is provided.
The passbook / slip printer 1 has a housing 11 in which a transport unit 2, a printing unit 3, and a sensor S are arranged. That is, the transport unit 2 includes a lower surface guide plate 12a and an upper surface guide plate 12b, and has the insertion opening 12 opened outside the housing 11. A transport path R for transporting a print medium such as a passbook or a slip is formed in the lower guide plate 12a and the upper guide plate 12b. A feed roller 21 and a pressure roller 22 and a feed roller 23 and a pressure roller 24 are arranged in a pair on the transport path R. The feed roller 21 and the pressure roller 22 are opposite to the insertion port 12 around the feed roller 21 and the pressure roller 22. On the side, a sensor S for optically detecting the print medium is provided.

On the other hand, a printing unit 3 including a print head 31 and a platen 32 is formed on the side opposite to the insertion port 12 with the feed roller 23 and the pressure roller 24 as centers.

In the passbook / slip printer 1 having the above configuration, the insertion slot
A printing medium P, which is a passbook and a voucher, is arranged in 12, and is conveyed from a conveyance path R, and each operation from printing processing to discharging is sequentially performed.

Next, the printing process and the print medium discharging operation will be described.

FIG. 7A shows an example in which a printing process is performed on a printing medium P having a normal length. When the print medium P is inserted from the insertion opening 12, the leading end FP is detected by the sensor S, and the pressure roller 22 is lowered by a driving device (not shown), for example, a solenoid, and presses the print medium P against the feed roller 21. Next, the feed roller 21 is rotated by the detection signal from the sensor S, and the leading end FP of the print medium P is
It is transported between 23 and the pressure roller 24. That conveys the print medium P sensor S and the feed roller 23, a distance L ₁ formed by the pressure roller 24. Next, as described above, the pressure roller 24 descends, and the pressure roller 22 rises, and the feed roller 23 rotates in a predetermined direction to convey the print medium P to a predetermined position on the platen 32. The printing medium P conveyed in this manner is subjected to printing processing by the print head 31 in the printing unit 3. After the completion of the printing process, the feed roller 23 is rotated in the reverse direction and discharged from the insertion port 12 through the transport path R. Rear TP of the time the print medium P a predetermined position from the distal end surface 12c of the lower surface guide plate 12a at a predetermined distance L ₂
It is conveyed as to reach the N _1, also the tip FP is conveyed as reaching the predetermined position N ₂ inward by the sensor S.

Therefore, the print medium P having a normal length is discharged from the passbook / slip printer 1 to a position where the print medium P can be easily removed from the rear end TP side.

On the other hand, as shown in FIG. 7 (b), even when the print medium P is somewhat short (about 76 mm), the leading end FP is moved to the predetermined position N _2.
At least, the rear end TP is at the front end 1 of the upper surface guide plate 12b.
As a result of being taken out of 2d, this is also in a state in which it does not fall off and is easily taken out as described above.

As shown in FIG However seventh <SUMMARY invention> (c), when the printing medium P is very long (for example, about A4 size), the discharge until the tip FP in position N ₂ Then, the distance Lz between the front end surface 12c of the lower surface guide plate 12a and the rear end TP of the print medium becomes longer, and the length of the print medium P exceeds the total length 2/5.
When the distance Lz exceeds 2/5 of the total length of the print medium P, the print medium P drops off from the rear end TP side due to its own weight. To prevent this fall off position away a predetermined position N ₂ from sensor S, i.e. provided in proximity to the feed roller 23 and the pressure roller 24 side.

But as in the FIG. 7 (d), when the printing medium P is very short, it without the trailing end TP for a given position N ₂ is separated from the insertion opening 12 to protrude from the conveyance path R, thus opening 12 It is impossible to take out the printing medium P from the printer.

Therefore, in the present invention, regardless of the length of the print medium, without dropping the print medium from the transport path,
In addition, it is an object of the present invention to provide a method for discharging a print medium of a printer which can discharge a print medium to a position where the print medium can be easily removed.

<Means for Solving the Problems> The present invention is a print medium discharging method of a printer made to achieve the above object, and the tip of a print medium of a minimum length is arranged closer to a print unit than a sensor position on a conveyance path. In the arrangement state, a limit position of the leading end of the medium that allows the minimum length of the print medium to be taken out from the transport path is set as a first predetermined position, and a predetermined position longer than the minimum length is set at the first predetermined position. In a state where the leading end of the print medium of the length is arranged, the limit position of the rear end of the medium where the print medium of the predetermined length does not fall off from the transport path is set as the second predetermined position, and the first predetermined position is set. The distance between the position and the second predetermined position is set as a reference length. If the length of the print medium measured during the transport of the medium is shorter than the reference length, the sensor detects the trailing end of the print medium when the medium is discharged, and the leading end of the medium on the reaction side reaches the first predetermined position. When the length of the print medium measured during the transport of the medium is equal to or longer than the reference length, the sensor detects the trailing edge of the print medium when ejecting the medium, and the trailing edge of the medium is detected. 2, the printing medium is discharged to the predetermined position.

<Operation> In the print medium discharge method of the printer according to the present invention, when the length of the print medium measured during the conveyance of the medium is less than the reference length, the discharge of the medium is performed until the leading end of the medium reaches the first predetermined position. By doing so, any print medium shorter than the reference length is discharged to a position where it can be easily removed from the transport path. If the measured length of the print medium is equal to or longer than the reference length, the medium is ejected until the rear end of the medium reaches the second predetermined position. , And is discharged to a position where it can be easily taken out.

<Example> Hereinafter, a method for discharging a print medium of a printer according to the present invention will be described in detail.

FIG. 1 is a schematic side view of the passbook / slip printer 1. The configuration and operations of the passbook / slip printer 1 are substantially the same as those described in the conventional example. That is, the transport path R formed by the lower guide plate 12a and the upper guide plate 12b
A sensor S for detecting the leading and trailing ends of the print medium P is provided above.

In the present embodiment, a first predetermined position Na is set at a distance Lx point from the sensor S position on the transport path R to the printing unit 3 side, and a first predetermined position Na is set at a distance Ly point from the sensor S position to the insertion port 12 side. Two predetermined positions Nb are set. Of these, the first predetermined position Na is the position where the printing medium P of the minimum length is
It is set as a limit position that can be directly and easily taken out by hand on the (transport path R), and the second predetermined position Nb
Is set as a limit position at which the print medium P on the transport path R can be prevented from falling off.

In other words, the first predetermined position Na is the minimum length from the conveyance path R in a state where the leading end FP of the minimum length print medium P handled by the printer is arranged closer to the printing unit 3 than the sensor S position. Corresponds to the limit position of the leading end of the print medium P that allows the removal of the print medium P. When the leading end FP of the print medium P having the minimum length is disposed at the first predetermined position Na, the removal of the print medium P is not performed. To allow this, the rear end TP of the medium is projected outward (to the left in the drawing) from the end 12d of the upper surface guide plate 12b.

On the other hand, the second predetermined position Nb is a state where the leading end FP of the printing medium P having a predetermined length longer than the minimum length is disposed at the first predetermined position Na, and the printing medium having the predetermined length is located on the transport path R. P corresponds to a limit position of the rear end TP of the medium without falling off, and in a state where the rear end TP of the predetermined length of the printing medium P is arranged at the second predetermined position Nb, the lower surface guide plate 12a Tip 12c
Is smaller than the total length of the print medium P, that is, the print medium P is securely prevented from falling off the transport path R.

Further, in the present embodiment, the first predetermined position Na and the second predetermined position Na
, The distance Lx from the sensor S position to the first predetermined position Na and the second predetermined position
The sum of the distances Ly to Nb is set as the reference length m. Then, in the operation flow of the printer described below, the reference length m set as described above is compared with the length of the print medium P measured during medium conveyance, and the discharge position of the print medium is determined based on the comparison result. It is controlled appropriately.

FIG. 2 is a control block diagram of the passbook / slip printer 1, and FIG. 3 is an operation flow from the insertion of the print medium P to the discharge after the print processing. As shown in FIG. 1, first, the printing medium P is inserted from the insertion port 12 (SP
1). Then, the leading end FP of the print medium P is detected by the sensor S (SP2). The detection signal of the sensor S is transmitted to the motor control unit 47 and the pressure roller control unit 48 via the print medium suction / discharge control unit 46. The pressure roller 22 is lowered by the above signal (SP3), and then the feed roller 21 is driven to rotate (SP4). Thereby, the transport path R
The conveyance of the print medium P is started toward the inside. At the same time that the leading end FP of the print medium P is detected by the sensor S, the counting circuit unit 50 starts counting the stepping motor transfer clock 41. Tip FP distance from the sensor S of L ₁ of the printing medium P in accordance with the transport, i.e. leading to between the feed roller 23 and the pressure roller 24 (SP5), which was detected by the pulse count of the stepping motor, a pressure roller 24 It is lowered (SP6) and transported to the printing unit 3 by the rotation of the feed roller 23. Pressure roller 24
At the same time, the pressure roller 22 rises (SP7), and then the print medium P is
It is transported up to two spaces (SP8). The print head moving motor 45 is driven by the print head movement control unit 44 based on the print information from the main control unit 40 to arrange the print head 31 at a predetermined position, and is further printed via the print head drive control unit 42. The print driving of the print head 31 is performed by the head drive circuit 43 (SP9, SP10).

During the printing medium conveyance and the printing process, the rear end TP of the printing medium P passes through the sensor S, and the sensor S is in the OFF state (SP11). At this point, the length Px of the print medium is detected. Accordingly, the counting circuit section 50 ends counting the number of clocks in the stepping motor transfer clock 41. The counted clock number is measured by the arithmetic unit 51 as the length Px of the print medium P. The length Px of the print medium measured in this way is compared with a reference length m preset in the calculation unit 51.

Here, the reference length m serving as the comparison reference is set in consideration of the length of the printing medium P in consideration of the length of the printing medium in order to prevent the printing medium P from dropping out of the transport path R and facilitate the removal as described above. Is the length determined from the predetermined position Na and the second predetermined position Nb.

Therefore, as a result of comparing the reference length m and the length Px of the printing medium P (SP15), when the length Px of the printing medium P is equal to or longer than the reference length m (Px ≧ m), the processing is performed according to the flow A in FIG. Done. That is, as shown in FIGS. 4A and 4B, the feed roller 23 rotates in the reverse direction (SP12), pushes out the print medium P (SP13), and turns on the sensor S again (SP14). Then
The print medium P is discharged by the reverse rotation of the feed roller 21, and the trailing end TP of the print medium is detected by turning on the sensor S. This is counted by the counting circuit section 50, and the arithmetic section 51 counts the motor control section 47. Start control. The counting circuit unit 50 measures the stepping motor transfer clock 41, counts the number of clocks corresponding to the distance Ly reaching the second predetermined position Nb,
The count signal is transmitted to the motor control unit 47 to stop the driving of the stepping motor 49, and the reverse feed by the feed roller 21 is stopped (SP21). Then, the pressure roller 22 rises (SP22), and the print medium P can be easily taken out from the rear end TP side.

From the above comparison, the length Px of the print medium P is the reference length m.
If it is shorter (m> Px), it operates according to the flow B in FIG. That is, as shown in FIGS. 5 (a) and 5 (b), after the sensor S detects the rear end TP of the print medium P and the sensor S is turned on, the first predetermined position is determined from the position of the front end FP of the print medium P. The number of clocks corresponding to the distance to Na is counted and discharged until the leading end FP of the print medium P reaches the first predetermined position Na (SP20a).

Thereafter, after the feed roller 21 stops in the same manner, the pressure roller 22 rises, and the print medium P can be easily taken out from the rear end TP side without falling off from the transport path R.

During the transportation of the printing medium P or during the printing process,
If the printing process ends without the trailing end TP of the print medium P being detected by the sensor S, that is, if the length of the print medium cannot be detected, discharging is performed for a certain distance. In this case, the operation is performed as shown in FIGS. 6A and 6B according to the flow C of FIG. This is because the sensor S is
Upon detecting that the print medium P remains OFF, the motor control unit 47 is controlled to discharge the print medium P by a certain distance l ₁ (the distance between the sensor S and the tip 12d of the upper guide plate 12b). This distance
l ₁ is measured by counting the number of pulses of the stepping motor. The fixed distance l ₁ is a distance determined so that the longest print medium P can be easily taken out and that the print medium P does not fall off the lower surface guide plate 12a.
In the relationship between the distance l ₂ formed by the front end 12c of N ₁ and lower surface guide plates 12a, and has a distance of l _1> l _2.

<Effects of the Invention> As described above, according to the print medium discharging method of the present invention, for both the minimum length print medium and the longer print medium, removal of the print medium from the transport path and A first predetermined position and a second predetermined position are set so as to prevent dropping, and a separation distance between the predetermined positions is set as a reference length, and the reference length and the printing medium measured during medium conveyance are set. The length of the print media is controlled by comparing the lengths of the print media. The medium can be discharged to a position where it can be easily taken out.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a passbook / slip printer, FIG. 2 is a control block diagram of the printer, FIG. 3 is a flowchart of each operation, and FIGS. 4 (a) and (b) are print media. 5A and 5B are diagrams illustrating a discharging operation when the length of the print medium is less than the reference length, and FIGS. FIGS. 7A to 7D are diagrams illustrating a discharge operation when a print medium is not detected, and FIGS. 7A to 7D are diagrams illustrating a conventional discharge operation. 1… passbook / slip printer 1,12… insertion slot, 12a …… bottom guide plate, 12b …… top guide plate, 12c …… tip end surface, 2 …… transportation part, 21, 23 …… feed roller, 22 , 24 …… Pressure roller, 3 …… Printing part, 31 …… Print head, 32 …… Platen, R
... Conveying path, Na ... First predetermined position, Nb ... Second predetermined position, P ... Print medium, Px ... Print medium length, FP ... Tip, T
P: rear end, S: sensor.

Claims (1)

(57) [Claims] A print medium conveyed from an insertion port of a printer to a printing unit via a conveyance path to the printing unit after the printing process in the printing unit is finished, and the medium until the printing process is completed. A printing medium for a printer that detects the leading edge and the trailing edge of the printing medium by a sensor provided on the transport path during transporting, measures the length of the printing medium, and controls the discharge position of the printing medium based on the measurement result. In the discharging method, in a state where the leading end of the printing medium having the minimum length is disposed closer to the printing unit than the sensor position on the transport path, the leading edge of the medium that allows removal of the printing medium having the minimum length from the transport path Is set as a first predetermined position, and in a state in which a leading end of a printing medium having a predetermined length longer than the minimum length is arranged at the first predetermined position, the predetermined length from the conveyance path is set. A limit position of the rear end of the medium where the print medium does not fall is set as a second predetermined position, and a separation distance between the first predetermined position and the second predetermined position is set as a reference length. If the length of the print medium measured during the transport of the medium is less than the reference length, the sensor detects the trailing end of the print medium when the medium is ejected, and the leading end of the medium on the reaction side detects the first end. The print medium is ejected to a predetermined position, and if the length of the print medium measured during the medium conveyance is equal to or longer than the reference length, the sensor detects the rear end of the print medium at the time of ejecting the medium. A print medium discharging method for a printer, comprising discharging a print medium until a rear end of the medium reaches the second predetermined position.