JP2989499B2 - Printing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention conveys roll paper from the upstream side of a printing section and cuts the roll paper after printing at a cut section provided on the downstream side of the roll section, and discharges the cut print sheet after printing. Printing device formed as described above.

[0002]

2. Description of the Related Art In FIG.
1, a setting section 12, a transport section 13, a printing section 16, and a cutting section 17 for the roll paper P are arranged in this order from the upstream side to the downstream side in the roll paper transport direction X1. ing. 13U is an upstream transport path, 13D is a downstream transport path, 14 is a platen, and 18 is a discharge receiving tray for cut sheets.

In the printing apparatus 10, when the power is turned on, the control unit (CPU) initializes (S.
After executing T30), the detection signal of the sensor is checked to determine whether or not the roll paper P is present in the downstream side transport path 13D (ST31).

[0004] If it is determined that there is no (NO in ST31),
The cueing process (ST34) shown in FIG. 8A is performed while the roll paper P is transported in the X1 direction. The leading edge of the roll paper P is advanced by a top margin T before the printing position PC. On the other hand, if it is determined that the roll paper P is present (YES in ST31), the roll paper P in the downstream side transport path 13D is transported in the X1 direction (ST32), and that portion is cut (ST33), and then the cueing process (ST33) is performed. ST34) is performed. In FIG. 8, R
C is a set position of the roll paper P, and CC is a cut position.

[0005] Thus, the printing process is permitted (ST35). Thereafter, the drive of the printing unit 16 is controlled based on print data transmitted from a higher-level device (not shown), and FIG.
As shown in (C), the printing process (normal printing PNT) is performed, and the sheet is further conveyed in the X1 direction. Then, as shown in (D), when the end margin E is secured, the roll paper P is cut [the same (E)], and the cut paper C is completely printed.
It is discharged to the discharge receiver 18 as P1.

[0006]

FIG. 8 (B)
Power may be lost during the printing operation shown in (1). Especially,
This is often the case when the power is turned on and off in conjunction with the host machine. Then, the operation is stopped as it is.

Therefore, when the power is turned on again, it is determined that the roll paper P is in the downstream side transport path 13D (ST in FIG. 7).
31 (YES), the roll paper P is transported in the X1 direction (ST32). The transport amount at this time is usually equal to the value obtained by adding the end margin E to the interval between the print position PC and the cut position CC shown in FIG.

Thus, the unprinted cut paper CP2 shown in FIG. 8F is discharged to the discharge receiver 18. Thereafter, the normal print processing (ST3
5) is performed, and the print-completed cut paper CP shown in FIG.
1 are successively discharged and placed on the discharge receiver 18.

Here, the length of the unprinted cut sheet CP2 shown in FIG. 8F depends on when the power failure occurred during the previous printing operation processing, and the length of the printed cut sheet CP1 shown in FIG. May be the same or slightly shorter. In addition, a part of the normal printing PNT processed before the power is lost naturally remains in the unprinted cut paper CP2.

That is, there is a case where the unprinted cut paper CP2 is erroneously recognized as the printed cut paper CP1, and there is a strong possibility that a serious problem will occur later. In addition, when the unprinted cut paper CP2 is not normally printed for the remaining one line, it is very difficult to make the determination.

SUMMARY OF THE INVENTION An object of the present invention is to provide a printing apparatus capable of easily and quickly discriminating an unprinted cut sheet due to a power loss during the preceding printing operation.

[0012]

According to a first aspect of the present invention, a roll sheet is conveyed from an upstream side of a printing section, and the roll sheet after printing is cut by a cutting section provided on the downstream side to complete printing. in printing apparatus which is formed so as to discharge the cut sheet, the printing in the loss of power storage means for storing the fact that the power supply during the printing process operation of the printing unit is lost, indicia shaped during power loss during power-up Determining means for searching the storage means to determine whether or not power loss during printing is stored; and on the condition that the determination means has determined that power loss during printing is stored , The cut part and the front
Printing the unfinished roll paper located between the
Reverse transport control means for reverse transport to the unit side, and before reverse transport
Drive control of the printing unit for unfinished roll paper
The unfinished roll paper with an invalid identification mark
And an additional operation control means to be described .

[0013]

[0014]

According to the first aspect of the present invention, when the power is turned on, the discriminating means searches the power-loss-under-printing storage means for storing that power has been lost during the previous printing operation. It is determined whether or not there is. If it is determined that the memory is present, the appending operation control means activates the invalidity marking appending means to identify the incomplete print, that is, invalid print content on the incompletely printed roll paper located between the printing section and the cut section. Add a sign.

[0015]

Further, before performing the additional operation, the unprinted roll paper can be reversely conveyed to the printing section by the reverse conveyance control means. Therefore, no matter how short the unfinished roll paper is, it is possible to more reliably print the print content invalid identification mark. In addition, a print content invalid identification mark (invalid print) can be added to the center or the entire surface of the unfinished roll paper which is conspicuous. Therefore, the cost can be reduced because it is more easily distinguished and there is no need to provide any special means for adding an invalid mark.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) The printing apparatus 10 has the same basic structure and functions as those of the conventional example (FIGS. 6 to 8), and as shown in FIG. , An invalid mark attaching means (29), a discriminating means (20, 21), and an attaching operation control means (20, 21). An invalid identification mark (stamp STP) can be added.

In FIG. 1, the control unit of the printing apparatus 10 includes:
CPU 20, ROM 21, RAM 22, battery 26
25, data communication line 30 backed up by
And an interface (I / F) 24 for performing data communication with the host computer (host device) 100 through the transport unit 13 (controller 13C) and the printing unit 16
(Controller 16C), and drives and controls the cut section 17 (Controller 17C) to perform print processing based on the print data PD transmitted from the host machine (100).

The RAM 25 forms a power-loss-loss storage means during printing, and can store and retain power during a power failure. That is,
The power failure detection storage control means (CPU 20, ROM 21)
When the power is lost during the printing operation, this is detected, and the fact is written and stored in the power loss storage means (25) during printing.
The power-loss during printing storage means may be formed from an EEPROM, a flash memory, or the like.

A stamper 29 (driver 29D), which is driven and controlled by the control unit (20, 21, 22, etc.), forms an invalid mark adding means, and the print content invalid identification mark (in this embodiment, a character with a frame). Stamp STP of “Print invalid”
Can be added. This stamper 29 is arranged close to the downstream side (left side in the figure) of the printing position PC shown in FIG.

The discriminating means is a means for retrieving the power loss during printing storage means (25) when the power is turned on to determine whether or not the power loss during printing is stored. Formed of a ROM 21 and a CPU 20,
This is executed in ST12 of FIG. In the case of this embodiment, it is determined that the roll paper P is present in the downstream side transport path 13D (see FIG. 2).
(YES in ST11), it is determined (ST12)
Is formed. Avoid unnecessary determination when there is no roll paper P.

The additional operation control means is formed from the ROM 21 and the CPU 20 storing the additional operation control program, and determines that there is a memory indicating that the power supply is lost during the printing operation (ST).
If YES in step 12), a signal is sent to the driver 29D to drive the stamper 29, and the print content invalid identification mark (stamp STP) is added (ST13).

Next, the operation of the first embodiment will be described with reference to FIGS. When the power is turned on, the CPU 20
Performs an initialization process (ST10 in FIG. 2), and subsequently determines whether or not the roll paper P is present in the downstream side transport path 13D (ST11).

If it is determined that there is not (NO in ST11),
The CPU 20 immediately performs the cueing process (ST16) as shown in FIG. Determined to be present (YES in ST11)
Then, the determination means (20, 21) searches the power loss during printing storage means 25 shown in FIG. 1 to determine whether there is a memory indicating that power loss during printing has occurred (ST12).

If it is determined that there is no memory (NO in ST12), the roll paper P is in the state shown in FIG. 3A1, and the CPU 20 conveys the roll paper P in the X1 direction (ST14) and cuts it. (ST15). Continued,
The cueing process (ST16) is performed while pulling out the roll paper P from the setting unit 12.

Now, when it is determined that there is (YES in ST12), the state is as shown in FIG. In other words, there is unprinted roll paper P on which unprinted but partially normal printed PNT has been made. Then, the appending operation control means (20, 21) operates to drive the stamper 29, which is the invalid mark appending means, so that the unprinted roll paper P
A stamp STP of the character "printing invalid" with a frame is added above (ST13). That is, the state shown in FIG.

Thereafter, the CPU 20 conveys the unprinted roll paper P in the X1 direction (ST14) and cuts (ST15) as shown in FIG. Then, the unprinted cut paper CP2 shown in (D) is discharged and placed on the discharge receiver 18.

Therefore, unprinted cut paper CP2
Is marked with a print content invalid identification mark (stamp STP), so that even if the completed print cut sheet CP1 shown in FIG. 8E is subsequently discharged and placed, it can be easily identified.

Thus, according to the first embodiment, the power-loss-under-printing storage means (25) and the invalid-marking means (2)
9), discriminating means (20, 21), and additional operation control means (20, 21). If there is unprinted roll paper P when the power is turned on, the print content invalid identification mark (stamp STP ) Can be added.
The unprinted cut paper CP2 due to the loss of power during printing can be easily and quickly distinguished from the normal printed cut paper CP1.

Further, the invalid marking means is provided by a stamper 29.
, It is possible to instantaneously add a print content invalid identification mark (stamp STP).

(Second Embodiment) FIGS. 4 and 5 show a second embodiment.
Is shown in The second embodiment has the same basic structure as that of the first embodiment, but further forms an invalid marking means using the printing unit 16 and controls the reverse transport (20, 21). Are provided to diversify the mode of adding the print content invalid identification mark, and can be realized at low cost.

That is, the printing unit 16 is, for example, a ROM 2
The invalid print identification mark based on the format stored in [1] [invalid print VPNT shown in FIG.
** ")] can be printed.

The reverse transport control means includes a determination means (2)
(0, 21), it is determined that there is a memory indicating that power is lost during printing (YES in ST22 of FIG. 4), and the invalidation marking means (1) is performed by the marking operation control means (20, 21).
Before performing the additional operation (ST24) of (6), FIG.
Cut position CC (cut section 17) and print position PC
The unprinted roll paper P located between the printing paper 16 and the printing unit 16 is reversely conveyed to the printing unit 16 side as shown in FIG.
4) is formed by the ROM 21 and the CPU 20 storing the reverse transport control program.
This is executed at T23.

In the case of the second embodiment having such a configuration, the CPU 2
After performing the initialization process (ST20 in FIG. 4), 0 determines whether there is a roll paper P in the downstream side transport path 13D (ST21). It is determined that there is not (N in ST21)
O), the first embodiment (ST16, 1 in FIG. 2)
This is the same as the case of 7) (ST27, 28).

When it is determined that there is (YES in ST21), the determination means (20, 21) is used in the first embodiment (ST21 in FIG. 2).
In the same manner as in the case of 12), it is determined whether or not there is a power-loss memory during printing (ST22). It is determined that there is no memory (ST2
2 is NO), the first embodiment (ST14 in FIG. 2)
The process proceeds to ST25 to ST28 in the same manner as in the cases of to 17).

If it is determined that the power supply is lost during printing (YES in ST22), the reverse transport control means (2)
0, 21) reversely conveys the unprinted roll paper P in the X2 direction from the state of FIG. 5A to the state of FIG. 5B while rotating the platen 14 in reverse (ST23). The reverse transport amount is stored as a constant in the reverse transport control program in the ROM 21. At most, it is determined that the top margin T remains downstream from the printing position PC.

When the reverse transport is completed, the additional operation control means (20, 21) causes the printing section 16 to perform an additional operation (ST24) of a print content invalid identification mark. That is, the invalid printing (***... **) VPNT is replaced with some normal printing portions PN.
It is printed on T. In the case where the number of lines reaches a predetermined number, the sheet is performed while the line feeds in the X1 direction. After this end, the CPU 20 controls the drive of the transport unit 13 and
As in the case of the first embodiment (ST14 and ST15 in FIG. 2),
Conveyed in X1 direction as shown in FIG. 5 (C) (ST25)
Then, cutting is performed as shown in (D) (ST26).

Therefore, unprinted cut paper CP2
, An invalid print VPNT is added as shown in FIG. 7 (E).
P1 can be distinguished at a glance.

If the format of the invalid printing VPNT is appropriately selected, the unprinted cut paper CP
It can also be added to the conspicuous central part, the entire area, etc. Further, no matter how short the unfinished roll paper P is, it can be added. Further, the size and color of the character can be changed.

According to the second embodiment, the invalid marking means is formed by using the printing unit 16 and the reverse transport control means (20, 21) is provided, and the discrimination means (2) is provided.
0, 21), when it is determined that there is a memory indicating that the power supply is lost during printing, the unprinted roll paper P is returned to the printing unit 16 side, and then the print content invalid identification mark (print invalid V)
(PNT), so that the same operation and effect as those of the first embodiment can be obtained.
Furthermore, since a print content invalid identification mark (VPNT) can be added to the center or the entire surface area of the unfinished roll paper P which is conspicuous, it can be realized more easily and at low cost.

Also, since the print format of the print content invalid identification mark is stored in the ROM 21, it can always be clearly added as a constant mark. Unprinted roll paper P
Can be added, no matter how short.

[0042]

According to the first aspect of the present invention, there is provided a power-loss during printing storage means, an invalid mark adding means, a determining means, and an adding operation control means. In this case, since the print content invalid identification mark can be added to the cut paper, the unprinted cut paper due to the loss of power during printing and the normal print completed cut paper can be easily and quickly distinguished.

[0043] Also, those whose printing back unfinished roll paper to the printing unit side, and by appending invalid identification label subsequently printed contents if it is determined that there is stored the effect of printing in a loss of power by determine by means which is configured as, conspicuous central or unfinished paper roll, because it appended print contents invalid identification label to the entire surface area, it can be further distinguished easily and embodies the cost.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a flowchart for explaining the overall operation.

FIG. 3 is a view for explaining a transport operation and the like.

FIG. 4 is a flowchart for explaining the overall operation of the second embodiment.

FIG. 5 is a view for explaining a transport / reverse transport operation and the like.

FIG. 6 is a schematic diagram for explaining the entire configuration of a conventional example.

FIG. 7 is a flowchart for explaining the overall operation.

FIG. 8 is a view for explaining a transport operation and the like.

[Explanation of symbols]

Reference Signs List 10 printing device 11 main body 12 setting section 13 transport section 13U upstream transport path 13D downstream transport path 14 platen 16 printing section (invalid marking means) 17 cut section 18 discharge tray 20 CPU (discriminating means, additional operation control means, reverse) Transport control means) 21 ROM (discriminating means, additional operation control means, reverse transport control means) 22 RAM 24 interface 25 RAM (power loss during printing storage means) 26 Battery 30 Data communication line 100 Host computer (host machine) P roll paper CP1 Printed cut paper CP2 Print unfinished cut paper RC Set position PC Printing position CC Cut position PNT Normal printing VPNT Invalid printing (Printing content invalid identification) STP stamp (Printing content invalid identification)

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B41J 29/46 B41J 25/20 B41J 29/40 G06F 3/12

Claims (1)

(57) [Claims] A roll paper is transported from an upstream side of a printing section.
And the roll paper after printing is placed on the downstream side
Cut at the printing section and eject the cut paper
In the formed printing device, the fact that power was lost during the printing process operation in the printing unit
Power loss during printing for storing, Electric When the power is turned on, the power loss during storage
A judgment is made to determine whether or not the power loss
The power loss during printing is stored by another means and this determination means.
On the condition that it is determined that, The cut section and the printing
The unfinished roll paper located between the
Reverse conveyance control means for performing reverse conveyance, The printing unit for the unfinished roll paper conveyed reversely
Drive control to invalidate the print content on the unfinished roll paper
Identification sign WithWrittenAnd an additional operation control means.