JP2652790B2 - Recording device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus for selecting one of a plurality of continuous recording sheets, conveying the recording sheet to a recording unit, and recording.

[Prior Art] A conventional recording apparatus capable of storing a plurality of recording sheet rolls has a leading edge position of each recording sheet when the system starts up, such as after power-on, after opening and closing a recording cover, and pressing down a stop key during recording. Is detected by a sensor, and the tip positions are aligned.

By the way, when the sensor detects black, it is not possible to determine whether there is no paper or a near-end mark, and it is not possible to detect the leading edge of the recording paper. Therefore, the sheet is cut once with a cutter, and the leading edge of the recording sheet is aligned with the cutter position as a reference. To cut.

[Problems to be Solved by the Invention] In the above-described conventional apparatus, in a double roll machine, even if the determination by the recording paper sensor is black for one of the recording papers, it is detected that there is no paper or a near-end mark is detected. There is a problem that it is not possible to determine whether Also,
Even if a near-end mark is detected, there is a problem that the leading edge of the recording paper cannot be detected.

[Means for Solving the Problems] According to the present invention, one of the recording paper first detection means and the recording paper second detection means detects the absence of paper, and the recording paper first detection means and the recording paper second detection means When the other of them detects the presence of paper, the recording paper is fed back, and then, when the other detection means detects the absence of paper, and when the third detection means of recording paper detects the presence of paper, Control means for controlling reverse feeding until the leading edge of the recording paper to be detected by the one detecting means reaches the upstream of the recording section.

[Operation] According to the present invention, one of the recording paper first detecting means and the recording paper second detecting means detects the absence of paper, and the other of the recording paper first detecting means and the recording paper second detecting means. When the recording paper is detected as being out of paper, the recording paper is fed in the reverse direction. When the other detecting means detects that there is no paper, and when the recording paper third detecting means detects the presence of paper, the one detecting means is used. And control means for performing reverse feeding until the leading edge of the recording paper to be detected reaches the upstream of the recording section, so that when the recording paper sensor detects black on one of the recording papers, it detects that there is no paper. It is possible to reliably determine whether or not a near-end mark has been detected, and even if a near-end mark has been detected, the leading edge of the recording paper can be detected.

Embodiment FIG. 1 is a diagram showing an example of the configuration of an automatic switching double roll storage facsimile apparatus showing one embodiment of the present invention.

This embodiment includes a roll-shaped front recording paper RP1, a roll-shaped rear recording paper RP2, a feed roller FR1 that conveys the recording paper RP1 in a state where the recording paper RP1 is disengaged from a platen roller, and a recording paper R.
Feed roller FR2 that transports P2 off the platen roller, and sensor RPS1 that detects the black band of recording paper RP1
And a sensor RPS2 for detecting a black band on the recording paper RP2, and a thermal head 4 for printing on the selected recording paper RP1 or RP2.
And a spring 5 for generating a pressing force between the thermal head 4 and the platen roller, and a platen roller PR for transporting the selected recording paper to the recording position.

Also, a platen motor PR that drives the platen roller PR
M and feed motors FRM1 and FRM2 for driving the feed rollers FR1 and FR2, respectively, a main controller 10 such as a microcomputer for controlling these, a motor driver 11 for driving the motors 7, 8, and 9, and a motor driver 11. A motor control block 12 for generating a motor phase signal, an input port 13 for inputting information of sensors RPS1 and RPS2, and a recording paper transport for sending and pulling recording paper to and from a recording unit including a thermal head and a platen roller. Section 14 and storage section for storing recording paper
A cutter 15 for cutting recording paper is provided.

The recording paper sensor RPJS is a sensor that detects the presence or absence of each of the recording papers RP1 and RP2 at a second predetermined position downstream of the recording unit 14 and not facing the near-end mark of each of the recording papers RP1 and RP2. .

FIGS. 2 to 4 are diagrams showing typical ones of the recording paper conveyance states. FIG. 2 shows a state in which the recording paper RP2 is at the preliminary conveyance position and the recording paper RP1 is at the recording position. FIG. 3 shows a state in which the recording papers RP1 and RP2 are both at the preliminary transport position. When the recording paper RP1 is rewound upstream from the recording position, and when the recording paper RP2 is moved from the recording position. This is the same as when rewinding upstream. FIG. 4 shows a state in which the recording paper RP1 is at the preliminary transport position and the recording paper RP2 is at the recording position.

FIG. 5 is a diagram showing the sensors RPS1, RPS2,
FIG. 4 is a diagram showing a positional relationship of RPJS.

 Next, the operation of the above embodiment will be described.

FIG. 6 is a flowchart showing the operation in the above embodiment.

When the sensor RPS1 detects white and the sensor RPS2 detects black in the system startup state, the recording paper RP1
Can be recorded, but it is unclear whether the recording paper RP2 has run out of recording paper or has a near-end mark even if the recording paper is present, and whether the near-end mark is present on the platen roller.

First, when the recording paper is reversed (when pulled back upstream), the time to move by the distance (L5 + L2 + L4) is T2, the time sufficiently longer than this time T2 is T1, and the timers T1 and T2 are set. (S1).

Next, both of the recording papers RP1 and RP2 are simultaneously reversed (S
2) Check until the output of the recording paper sensor RPS1 changes from white to black (S3). At the same time, it is also checked whether or not the timer time T1 has exceeded (S19). If the timer time T1 has exceeded, it is determined that the recording paper RP1 has jammed (S19).
20). Thereafter, a jam warning is issued (S21), and the system is stopped (S22).

In S3, when the sensor RPS1 detects black and detects the leading end of the recording paper RP1, the recording paper RP1 is stopped (S4), and thereafter, the output of the sensor RPJS is checked, and if the sensor RPJS detects white (S5 ), It can be determined that the near-end mark is on the platen (S14), so the recording paper RP2 is reversed (S15) and the sensor RPJS is continued until time T1 is exceeded.
It is checked that the output changes from white to black (S16).
The detection of the black from white by the sensor RPJS means that the leading end of the recording paper RP2 has been detected, so the recording paper RP2 is stopped (S11).

At this time, the recording paper RP1 is in a recordable state, the leading end of the recording paper RP1 is above the sensor RPS1, and the recording paper RP2 is in a state where recording is not possible due to the near-end mark.
It recognizes that the tip of 2 is on the platen and above the sensor RPJS (S12). The state at this time is shown in FIG.

In S12, although the recording paper RP2 cannot be recorded with the near-end mark but is on the platen, the distance (L5 +
L2) is reversed (S13), and then the recording paper RP1 is forwarded by the distance (L3 + L1) (S10).
The two recording papers of the double roll machine are aligned.
The state at this time is shown in FIG.

In S5, when the sensor RPJS detects black, the recording paper RP
2 is forwarded (S6), and while checking the output of the sensor RPJS, it is forwarded until time T2 is exceeded (S7).

When the sensor RPJS detects white, the recording paper RP2 is stopped as in S16 (S11). Thereafter, the same processing is performed as described above (S11, S12, S13).

If RPJS detects black (S7) and time T2 is exceeded (S8), it can be determined that the recording paper RP2 is out of paper.
Therefore, the operation is stopped. In this case, the recording paper RP1 is a recordable recording paper, the leading end of which is above the sensor RPS1,
It recognizes that the recording paper RP2 is out of paper (S9). The state at this time is shown in FIG.

In S9, since the recording paper RP2 is out of paper, the recording paper R
P1 is forwarded as it is by the distance (L3 + L1), and positioning can be performed in the same manner as described above. The state at this time is shown in FIG.

In S16, while the sensor RPJS detects white, the time T
When 1 has elapsed (S17), it is recognized that the recording paper RP2 has jammed (S18), a jam warning is issued (SS21), and the system is stopped (S22).

In the above-described embodiment, no abnormal noise is generated in the sequence, and it is not necessary to perform the idle cut operation, and it is possible to detect the jam during the normal recording and the jam when the system is started.

When the sensors RPS1 and RPS2 detect black and white, respectively, in the above-described embodiment, the same algorithm as described above is used, except that the recording papers RP1 and RP2 are reversed and the sensors RPS1 and RPS2 are reversed. take.

[Effects of the Invention] According to the present invention, when the recording paper sensor detects black on one recording paper, it can be determined whether it is out of paper or a near-end mark has been detected.
Even when a near-end mark is detected, the leading edge of the recording paper can be detected.

[Brief description of the drawings]

FIG. 1 is a system block diagram showing one embodiment of the present invention. FIGS. 2, 3 and 4 are views showing typical ones of the recording paper conveyance states in the above embodiment. FIG. 5 shows the sensors RPS1, RPS2, RPJS in the above embodiment.
It is a figure which shows the positional relationship of. FIG. 6 is a flowchart showing the operation in the above embodiment. FIG. 7, FIG. 8, FIG. 9, and FIG. 10 are explanatory diagrams of the operation of the above embodiment. RP1, RP2: Recording paper, FR1, FR2: Feed roller, RPS1, RPS2: Sensor, PRM: Platen motor, FRM1, FRM2: Feed motor.

Claims (2)

(57) [Claims] 1. A recording apparatus for selecting one of a continuous first recording paper and a continuous second recording paper, transporting the selected recording paper to a recording unit, and performing recording, wherein: A first sheet detecting means for detecting the presence or absence of the first recording sheet at a first predetermined position on the conveyance path and upstream of the recording section; and on a conveyance path for the second recording sheet. A recording paper second detecting means for detecting the presence or absence of the second recording paper at a second predetermined position upstream of the recording unit; and a position downstream of the recording unit and Recording paper, a recording paper third detection means provided at a third predetermined position not opposed to the near end mark of the second recording paper; and the recording paper first detection means and the recording paper second detection means One of them detects the absence of paper, and determines whether the recording paper first detection means and the recording paper second detection means When the other of them detects the presence of paper, the recording paper is sent backward, and then, when the other detection means detects the absence of paper, and when the third recording paper detection means detects the presence of paper, Control means for controlling reverse feeding until the leading end of the recording paper to be detected by the one detecting means reaches the upstream of the recording section. 2. The control means according to claim 1, wherein said control means, when detecting the presence of paper on said other side, reversely feeds said recording paper until said other side is out of paper, and thereafter said control means. When the other detecting means detects the absence of paper and the third detecting means of the recording paper detects the presence of paper, the recording means determines that the one detecting means has detected near-end. apparatus.