JP3405397B2 - Printer - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a printer, and more particularly, to a printer characterized by an operation control after cutting continuous paper having perforations. 2. Description of the Related Art In a printer in which a continuous paper after a required recording and writing process is cut off at a perforation,
Generally, a cutter as shown in FIG. 2, that is, a cutter in which a perforated portion is cut with a roller-shaped cutter while holding the front and rear portions with a paper press is provided, and the continuous paper on the cut side is provided. Is discharged onto a discharge tray by its own weight or by using a discharge roller. However, in a case where the continuous paper is cut into short lengths or in a printer without a paper discharge roller, the continuous paper on the cut side is discharged onto a paper discharge tray. May be left at the position where the paper was cut off, while the leading edge of the continuous paper on the side that was left behind was slightly pulled into the cutting space together with the cutter by a large cutting force when separating, and this portion raised the cutter. In some cases, it may overlap with the trailing end of the continuous paper on the cut side,
As a result, when the continuous paper on the side left for the next recording and writing is pulled back, the continuous paper on the separated side is also pulled back by friction at the same time, so when the recording and writing are finished and the continuous paper is sent out In addition, there arises a problem that the paper comes into contact with the continuous paper before being separated and causes a jam. [0004] The present invention has been made in view of such a problem.
It is an object of the present invention to provide a printer having a new continuous paper post-processing mechanism capable of preventing the occurrence of paper jam or the like. [0005] That is, according to the present invention, a printer for achieving the above object is provided with a continuous paper transport mechanism.
With a mechanism to cut paper and continuous paper at perforations
Then , following the operation of cutting the continuous paper , return the leading end of the remaining continuous paper from the cutting position to the ironing position.
Then, the post-cut processing operation of transferring the remaining continuous paper from the cutting position to a position where the continuous paper on the cut side can be discharged and pulling it back by the same distance to set a predetermined printing start position is performed. It is configured to provide a control means for controlling the conveyance mechanism so as to take place prior to the next recording write operation
Have . Embodiments of the present invention will be described below. FIG. 1 shows a printer having a post-cut processing control mechanism according to an embodiment of the present invention. This printer comprises a recording head 2 for recording and writing on continuous paper S fed by a push tractor 1, a cutter 3 for cutting the continuous paper S on which writing processing has been performed at a perforation, and a continuous paper for cutting. And a discharge tray 4 for receiving S1. On the other hand, a cutter 3 used for cutting the continuous paper S
As shown in FIG. 2, each of continuous papers on the side separated from the remaining side and the cutter unit 34 provided so as to straddle the front and rear paper guides 32 and 33 provided with the cut space 31 therebetween. Paper holders 35, 35 for pressing and supporting the leading and trailing ends of S1, S2 at the time of cutting are provided, and a cutting operation button (not shown) is pressed between them to enter the cutting space 31 to cut the continuous paper. A cutter 36 for cutting S at the perforation is provided so as to be movable up and down. Reference numeral 37 in the figure denotes an auxiliary paper guide provided so as to be movable up and down in the cut space 31. Returning to FIG. 1, reference numeral 10 denotes a control circuit relating to a processing operation performed after cutting the continuous paper S. The control circuit 10 confirms the end of the cutting operation based on the movement of the cutter 2 and checks the forward / reverse signal switching means 1
The operation end confirmation means 11 for outputting a signal to the output signal 2 and the output signal from the operation end confirmation means 11 first switch to the normal rotation signal, and then switch to the reverse rotation signal by the first coincidence signal from the coincidence signal output means 15. Is output to the motor control means 16 and the forward / reverse rotation signal switching means 12 for interrupting the signal output to the motor control means 16 by the second coincidence signal, and the number of pulses for counting the number of pulses applied to the step motor for driving the push tractor It is necessary to rotate the push tractor 1 in order to feed the continuous paper S1 by a distance L1 from the counting means 13 to a position B where the continuous paper S2 separated from the cutting position A can be discharged, and FIG. Pulse number setting means 14 for setting and storing the pulse number n1,
The counting content of the pulse number counting means 13 is reset by the output signal when the counted pulse number matches the set pulse number n1, and the first and second coincidence signals are sent to the forward / reverse signal switching means 12. And a coincidence signal output means 15 for outputting. Next, the post-cutting processing operation of the continuous paper 3 by the control mechanism having the above-described structure will be described with reference to FIGS. After the necessary recording and writing are completed, the continuous paper S is sent out so that the perforation m of the part to be separated comes to the cutting position A (step a). Then, as shown in FIG. After the perforation m is correctly aligned with the cutting position A (step b), the cutting operation button is pressed (step c), and as shown in FIG.
The continuous paper S is cut from the portion by the cutter 36. When the cutter 36, which has finished cutting, rises from the cutting space 31, the operation completion confirmation means 11 performs the cutting operation based on an output signal from a not-shown detection sensor or the like (FIG. 2C). When the end is confirmed, the operation end confirming means 11 sends the confirmation signal to the forward / reverse signal switching means 1
2 and the push tractor 1 is first rotated forward through the motor control means 16 (step d). Then, when the push tractor 1 is rotated forward by the preset number of pulses n1 and the continuous paper S1 on the side left by the distance L1 from the cut position A is extruded, the continuous paper on the separated side is extruded. As shown in FIG. 2D, S2 is extruded to the remaining side by the leading end of the continuous paper S1 to a position B where it can be discharged, and falls onto the discharge tray 4 by its own weight. On the other hand, when the coincidence signal is output from the coincidence signal output means 15 in comparison with the set pulse number n, the forward / reverse signal switching means 12 switches the signal from normal rotation to inversion by this coincidence signal. The push tractor 1 is switched to the reverse rotation by the signal via the motor control means 16 (step f), and the push tractor 1 is reversed by the same pulse number n1 as before, and as shown in FIG. Return the leading end of the continuous paper S1 to the cutting position A and stop it (step
J). When all of the post-cut processing operations are completed, the sequence shifts to a normal recording and writing sequence control operation, and the remaining continuous sheet S1 is moved to a position required for the next recording and writing, that is, a restart position. Then, the push tractor 1 is rotated forward to return to step (Step 1), and the operation proceeds to the next recording / writing operation. By the way, as shown in FIG. 5A, when the cutting of the continuous paper S is finished and the cutter 36 is raised to return, the leading end a of the continuous paper S1 on the remaining side is cut. The continuous paper S2 is deflected by 36, and may hinder the pressing of the continuous paper S2 on the side separated in the next step. The embodiment shown in FIG. 4 shows a control circuit according to a second embodiment of the present invention which is incorporated in a printer to avoid such inconvenience. In this control circuit 20, the same pulse number setting means 24 as in the first embodiment is used to set the distance L2 (FIG. 5) required to squeeze the leading end of the continuous paper S1 on the side left from the cutting position A.
(B), the first set pulse number n2 required to rotate the push tractor 1 to return it, and the distance L3 to the position B where the continuous paper S2 separated from the ironing position c is discharged (FIG. 5).
While the second set pulse number n3 required to feed the continuous paper S1 on the side left only by (c) is stored, the forward / reverse signal switching means 22 confirms from the operation end confirmation means 21. A reverse signal is first output by a signal, and then a coincidence signal output means 25 which is output when the count number of the pulse counting means 23 coincides with the first set pulse number n2.
Is switched to the normal rotation signal by the coincidence signal from
The signal is switched to the normal rotation signal by the coincidence signal with the set pulse number n3, and is output to the motor control means 26, respectively. It is configured to cut off. According to this embodiment, as shown in FIGS. 5 and 6, the continuous paper S is cut by operating the cut operation button (step c), and the cut operation end confirmation means 21 which is output thereafter is output from the cut operation end confirmation means 21. First, the push tractor 1 is reversely rotated by the reverse rotation signal from the forward / reverse rotation signal switching means 22, and the leading end of the remaining continuous paper S1 is returned to the ironing position C as shown in FIG. After the lever is straightened (staple), the push tractor 1 is switched to the normal rotation from the position C, and the continuous paper S1 on the remaining side is moved to the dischargeable position B as shown in FIG. The separated continuous paper S2 is discharged onto the paper discharge tray 4 (step E), and a series of operations from step S to step E are performed as in the first embodiment. As described above, according to the present invention, the cutting
Prior to the subsequent discharge processing, the remaining continuous paper is
To the end of the continuous paper
To straighten the ends can Rukoto issue reliably discharge the disconnect continuous paper. [0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a printer and a control circuit thereof according to an embodiment of the present invention. FIGS. 2A to 2E are views showing a post-cut processing operation of continuous paper by the printer. FIG. 3 is a flowchart showing post-cut processing steps of the printer. FIG. 4 is a diagram illustrating a printer and a control circuit thereof according to another embodiment of the present invention. FIGS. 5A to 5D are views showing a post-cut processing operation of continuous paper by the printer. FIG. 6 is a flowchart showing post-cut processing steps of the printer. [Description of Signs] 1 Push tractor 3 Cutter 10, 20 Control circuit

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B41J 11/70 B41J 11/66

Claims (1)

(57) [Claim 1] In a printer provided with a mechanism for transporting continuous paper and a mechanism for cutting continuous paper at a perforated portion, the remaining side is followed by an operation for cutting continuous paper. Return the leading end of the continuous paper from the cutting position to the ironing position, then transfer the remaining continuous paper to a position where the continuous paper separated from the cutting position can be discharged, and pull it back by the same distance. The post-cut processing operation to be set at the predetermined print start position
A printer provided with control means for controlling the transport mechanism so as to be performed prior to the next recording / writing operation.