JPH06115185A - Recording apparatus - Google Patents

Abstract

PURPOSE:To prevent a recording position from deviating and to prevent a driving means from being made disorderly even when 2 recording material is transferred by manual operation by setting initially the driving means at the final magnetizing phase at the beginning of driving when a condition where there exists no printing data in a storing means is continued at least for a specified time or when there exists no recording material at a recording position. CONSTITUTION:A memorizing means 31 stores the final magnetizing phase of a driving means 2 and stores printing data in a storing means 33. In addition, a time measuring means 38 performs a time measuring operation for a specified time under a condition where there exists no printing data in the storing means 33 and it outputs a specified signal after time measuring is finished. Then, a controlling means 31 sets initially the driving means 2 at the final magnetizing phase stored in the memorizing means 31 in accordance with a signal from the time measuring means 38 when driving of the driving means 2 is started. As a result, even when a recording material is transferred by a manual operation, it is possible to prevent a recording position from deviating and to prevent the driving means from being made disorderly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device.

[0002]

2. Description of the Related Art For example, when a recording device is connected to a PC (personal computer), print data for one line or print data for one page is sent from the PC,
Print according to the command.

FIG. 5 shows a mechanism for conveying a recording sheet of a recording apparatus used for this printing. In FIG. 5, below the main roller 7, feed rollers 9 and 10 for pressing the recording sheet 1 to the main roller 7 are provided together with a paper pan 8 for forming a paper path.

The main roller 7 is rotationally driven by the clockwise drive of the feed motor 2 via the pinion gear 3, the idler gear 4, and the feed gear 5 fixed on the shaft 6 of the main roller 7.

As a result, the recording sheet 1 is fed along the outer periphery of the main roller 7 and guided to the front side of the main roller 7 via the paper pressing member 11.

A head cartridge 1 provided with a recording head 12a for ejecting ink and an ink tank (not shown) as a printing means near the front side of the main roller 7.
Two are provided. The head cartridge 12 is mounted on a carriage (not shown), and is moved along the main roller 7 by driving the carriage. Then, by driving these printing means, printing is performed on the recording paper 1.

On the other hand, above the main roller 7, the spur 1
4 is provided, and the recording paper 1 sent out from the recording unit
Is pressed against the paper discharge roller 13 and guided upward.

FIG. 6 shows the backlash state of the gear train after the sheet is fed by a normal motor drive, that is, after the automatic sheet feeding or the line feeding. During sheet feeding, the motor pinion rotates clockwise. Figure 6
As in the parts A and B, the backlash after the sheet is fed by the driving of the motor is controlled so as to be always on one side. In the illustrated case, the tooth flanks of the front gear are closer to the side that pushes the tooth flanks of the rear gear.

[0009]

However, when the operator manually rotates the platen knob (not shown) attached to the main roller shaft 6 to set the recording paper for the next printing, the gear 3, Since the gears 4 and 5 also move together, the backlash between the subsequent gears is different from time to time as shown in FIGS. 7 and 8. Therefore, when a new line is driven by the next motor drive, the line pitch between the current line and the next line is different from the normal one because the backlash state has changed.
The row pitch is disturbed. That is, the actual sheet feed amount is different from the normal sheet feed amount. Further, when the platen knob is manually operated, the drive shafts of the pinion gear 3 and the feed motor 2 in FIG. 6 also rotate. When a stepping motor is used as the feed motor 2, the rotor phase and the stator phase of the motor are out of phase, and in extreme cases,
The feed motor 2 may not be driven due to step-out.

SUMMARY OF THE INVENTION In view of the above points, an object of the present invention is to provide a recording apparatus which does not adversely affect the recording process even if the recording material conveying means is manually operated.

[0011]

In order to achieve such an object, the present invention provides a conveying means for conveying a recording material, and a driving means for giving a driving force to the conveying means via a predetermined transmission mechanism. In a recording apparatus capable of conveying a recording material by operating the conveying means by driving the driving means, and by operating the conveying means by a manual operation, A storage means for storing the final excitation phase of the drive means, a storage means for storing print data, and a predetermined time counting operation on condition that there is no print data in the storage means, and outputs a predetermined signal after the time counting is completed. And a control means for initializing the drive means to the final excitation phase stored in the storage means in response to a predetermined signal from the time measurement means at the start of driving of the drive means. Characterized in that it.

Further, the present invention comprises a conveying means for conveying the recording material and a driving means for giving a driving force to the conveying means via a predetermined transmission mechanism, and the conveying means is driven by driving the driving means. A recording device capable of transporting the recording material by operating the recording medium and transporting the recording material by manually operating the transporting means, a storage means for storing a final excitation phase of the driving means, and a recording means. A signal generating means for generating a predetermined signal when there is no recording material at the position; and a final storing means for storing the drive means in the storage means in response to a predetermined signal from the signal generating means when the drive means starts driving. Control means for initial setting to the excitation phase,
It is characterized by having.

As a result, when there is no print data in the storage means for a predetermined time or more, the recording operation may not be performed during this time, and the recording material may have been conveyed by manual operation. Is set to the final excitation phase.

Even when a signal indicating that there is no recording material at the recording position is generated, the recording material may have been conveyed by a manual operation, so the driving means is set to the final excitation phase at the start of driving. .

[0015]

【Example】

<First Embodiment> An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a circuit configuration of a control system of the recording apparatus of this embodiment.

The mechanical mechanism of the recording apparatus is the same as that shown in FIG. In FIG. 1, reference numeral 30 is a recording apparatus according to the present embodiment, which is a host PC (personal computer) 40.
Are connected.

In the configuration of the recording device 30, reference numeral 31 is an MPU which is composed of a microprocessor element for controlling the entire recording device 30. The MPU 31 has a ROM 32 storing data such as a control program, a print data receiving buffer 34 and an M as a working area of the MPU 31.
RA having a flag and a register 35 for storing data used in the control procedure executed by the PU 31
A RAM 36 for expanding data in the reception buffer of the M33 and the RAM 33 and accumulating image data as a print buffer 37 for one line, and a timer 38 used for time measurement as a control procedure of the MPU 31 are connected.

The MPU 31 includes a feed motor 2 for rotating the main roller 7 and a head 12 as a printing mechanism.
a, a print control circuit 39 to which a paper sensor 20 for detecting the paper end is connected.
In this embodiment, the head 12a ejects an ink droplet from the ejection port by causing the ink to change its state using thermal energy.

Under such a structure, the MPU 31 has the ROM 3
By executing the control program stored in 2,
The entire recording device 30 is controlled, and each unit is controlled according to an input from the PC 40 to perform recording.

That is, when the MPU 31 is ready to receive the record data, the PC 40 transmits the record data to the MPU 31 via the interface circuit 35. MP
The U 31 temporarily stores the received data in the reception buffer in the RAM 33. The MPU 31 confirms that the received data exists in the RAM 33, and processes the received data. If the content of the received data is a character code, ROM
Image data is developed based on the CG data in 32,
The data is sequentially stored in the print buffer of the RAM 36. If it is a print command, the print mechanism 41 is controlled via the print control circuit 39 to print the data stored in the print buffer 37, and printing is performed. Further, if it is a feed command, the printing mechanism 41 is also passed through the printing control circuit 39.
Control and feed.

FIG. 2 is a flowchart relating to Flag setting according to the present invention.

The recording apparatus 30 starts when the power is turned on, and the timer 38 is reset in S101. Then S10
Proceeding to step 2, the paper end check, which will be described later, is performed. Then, the process proceeds to S103, and it is determined whether or not the reception data exists in the reception buffer 34.
In step 05, the timer 38 starts counting. Then S
In step 106, it is determined whether or not one second or more has elapsed since the timer count started. If it is within one second, the process proceeds to step S102. If it is one second or more, the process proceeds to step S107.
Turn on the Adjust Flag. Then, the process proceeds to S101 and is performed in the same manner. If there is received data in the receive buffer in S103, the process proceeds to S104 and the timer 38
Is reset and the process proceeds to S102.

FIG. 3 is a flowchart of the contents of the paper end check in S102 described above.

First, in S201, it is determined whether or not it is the paper end. This is because the paper sensor 20 in FIG. 5 passes the lower end of the paper, that is, from the time when the paper sensor 20 changes from the state with paper to the state without paper, the paper sensor 2
When the motor 2 is driven by a distance L from 0 to the vicinity of the upper end of the paper presser 11, it is determined that the paper end. If it is not the paper end, END is set, and the flowchart S1 in FIG.
Go to 03. If it is the paper end, the process proceeds to S202, waits for the input of the paper feed key for the operator to feed the paper, and if there is the input, the process proceeds to S203 to check whether the paper is fed or not. If there is no paper, it is determined that the paper is not fed, and the process returns to S202. If there is paper, S
Proceed to step 204, and turn on the PFM Adjust Flag. Then, the process proceeds to S103 of the flowchart of FIG.

Next, the actual recording operation will be described.

FIGS. 4A and 4B are flow charts relating to the processing of the feed command and the buffer print command in the reception buffer 34, respectively.

In the case of the feed command, the PFM Adjust Flag is set in S107 or S204 described above.
Is determined to be ON in S301, and Flag is O
If it is N, the process proceeds to S302, it is considered that the recording was temporarily stopped, and there is a possibility that it is being handled,
The phase matching control of the feed motor 2 which will be described later is performed S303.
Then, the flag is turned off, and the process proceeds to S304 where the feed motor 2 feeds. If the Flag is OFF in S301, the process proceeds to S304, and the feed motor 2 only feeds.

Further, in the case of the buffer print command, it is similarly determined in S401 whether the PFM Adjust Flag is ON, and if the Flag is ON,
Going to S402, it is considered that the recording has been temporarily suspended,
Since it may have been rotated by hand, backlash removal control of the feed motor 2 which will be described later is performed and the process proceeds to S403.
The flag is turned off, and the process proceeds to S404 to perform buffer printing. If Flag is OFF in S401, the process proceeds to S404 and the buffer printing is performed as it is.

In the present embodiment, the time elapsed since there is no data to be processed in the reception buffer is counted, and when the measured time exceeds a certain time, it is considered that the recording is temporarily stopped and the reception is performed. Even if there is data to process in the buffer, at the end of the paper, the recording is suspended, so in these cases the platen knob may have been manually operated, so the feed or Special control (phase matching control, backlash removal control) is performed only during printing.

The contents of the phase matching control for returning the motor drive shaft to the position before the stop will be specifically described.

The feed motor 2 is a stepping motor and has four phases. When the pinion gear 3 of the motor 2 feeds the sheet in the clockwise direction, that is, in the forward direction in FIG. 3, the I (1) phase is used. → II (2) phase → III (3) phase →
Excitation is performed in the order of IV (4) phase → I (1) phase.

When the control information of the internal register of the CPU 31 indicates that the excited phase of the stator immediately before the temporary stop is the I phase, the CPU 31 causes the I phase → IV phase →
Excitation is performed every 50 msec with the I phase.

By carrying out this control, it is possible to match the phase excited by the stator, regardless of the position of the rotor phase. That is, in the above case, it can be achieved by adjusting to the I phase.

Next, C for shifting the backlash to one side
The control contents of the PU 31 will be specifically described.

When the phase information stored in the internal register of the CPU 31 indicates that the currently stopped phase is the I phase, for example, I phase → IV phase → III phase → II phase →
I-phase → ... and 10 steps counterclockwise feed motor 2
Rotation, and then clockwise in the same number of steps (10st
ep) Return and return to the I phase that was initially stopped. Here, this number of steps (10 steps) needs to be set larger than the amount of backlash.

By performing the above control, the backlash can be brought to one side.

As described above, when the state in which there is no data to be processed in the reception buffer exceeds a certain time, or when printing such as paper end is interrupted, the drive of the feed motor is started or the printing is started. At the same time, phase matching control is performed to match the rotor and stator positions to the final excitation phase of the feed motor, and at the start of printing, the position shift caused by backlash is eliminated to allow the operator to manually operate the platen knob when recording is temporarily stopped. Even if the backlash state changes, the recording position will not be slightly deviated, and the feed motor will not be out of step.

<Second Embodiment> FIG. 9 shows a circuit configuration of a control system of a recording apparatus according to a second embodiment of the present invention.

In the first embodiment, the print data is sent from the PC, but in the present embodiment, the print data is input from the keyboard like an electronic typewriter.

In FIG. 9, the same contents as in FIG.
The same code is used. Further, the mechanical mechanism of the recording apparatus is similar to that of the conventional example shown in FIG.

In the construction of the recording apparatus of the second embodiment,
The data input by the keyboard 50 is the MPU31.
The receiving buffer 34 in the RAM 33 based on the control procedure of
Is temporarily stored in. Then, the MPU 31 confirms that the reception data exists in the reception buffer 34, and processes the reception data. If the content of the received data is a character code, it is developed into image data based on the CG data in the ROM 32 and sequentially stored in the print buffer 37 of the RAM 36. If it is a print command, the print control circuit 3 should print the data stored in the print buffer 37.
The printing mechanism 41 is controlled via 9 to perform printing. Also,
If it is a feed command, the printing mechanism 41 is also controlled via the printing control circuit 39 to perform feeding.

The present invention can be applied to the above-described structure in the same manner as in the first embodiment.

In the first and second embodiments described above, the ink jet type recording apparatus has been described as an example, but the present invention can be applied to the thermal transfer type, wire dot type, daisy wheel type recording apparatus and the like.

Further, in the first and second embodiments, since the stepping motor is used as the feed motor,
Although the phase matching control is performed in the process immediately before the resumption of recording, when a motor that does not need the phase matching is used, it goes without saying that the phase matching is not necessary and only the backlash removal control may be performed.

Further, in the present embodiment, the timer is used as the time measuring means after there is no data to be processed in the receiving buffer, but this can also be applied to the soft timer.

[0046]

As described above, according to the present invention, when there is no print data in the storing means for a predetermined time or more, or when there is no recording material at the recording position, the driving means makes the final excitation phase at the start of driving. Since the initial setting is performed, it is possible to prevent the positional deviation of the recording position from occurring even when the recording material is being conveyed by the manual operation, and to prevent the step-out of the driving means.

[Brief description of drawings]

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

FIG. 2 is a flowchart regarding Flag setting according to the present invention.

FIG. 3 is a flowchart regarding a paper end check according to the present invention.

FIG. 4 is a flowchart regarding processing of a feed command and a print command in the reception buffer according to the present invention.

FIG. 5 is a cross-sectional view showing a cross-sectional structure of a paper feeding mechanism according to the present invention.

FIG. 6 is a structural diagram showing a backlash state of gears in the paper feeding mechanism.

FIG. 7 is a structural diagram showing a backlash state of gears in the paper feeding mechanism.

FIG. 8 is a structural diagram showing a backlash state of gears in the paper feeding mechanism.

FIG. 9 is a block diagram showing a circuit configuration of a second embodiment of the present invention.

[Explanation of symbols]

 1 Recording Sheet 2 Feed Motor 3 Pinion Gear 4 Idler Gear 5 Feed Gear 7 Main Roller 12a BJ Head 20 Paper Sensor 31 MPU 32 ROM 33 RAM 34 Receive Buffer 36 RAM 37 Print Buffer 38 Timer 40 PC 50 Keyboard

Claims (4)

[Claims] 1. A transporting means for transporting a recording material, and a driving means for applying a driving force to the transporting means via a predetermined transmission mechanism. The transporting means is operated by driving the driving means. A recording device capable of conveying a recording material and conveying the recording material by operating the conveying means by a manual operation, in which a storage means for storing a final excitation phase of the drive means and a print data are stored. A storage unit, a time counting unit that performs a predetermined time counting operation on condition that there is no print data in the storage unit, and outputs a predetermined signal after the time counting is finished, and a predetermined unit from the time counting unit when the driving unit starts driving. A recording means for initializing the drive means to a final excitation phase stored in the storage means in response to a signal. 2. The control means, when initializing the drive means, drives the drive means in a predetermined direction by a predetermined amount equal to or more than a backlash amount of the transmission mechanism, and then drives the predetermined amount in a direction opposite to the predetermined direction. The recording apparatus according to claim 1, wherein the driving unit is driven. 3. A transporting means for transporting a recording material, and a driving means for applying a driving force to the transporting means via a predetermined transmission mechanism. The transporting means is operated by driving the driving means. In a recording apparatus capable of conveying a recording material and conveying the recording material by manually operating the conveying means, a recording means for storing a final excitation phase of the driving means, and a recording material at a recording position Signal generating means for generating a predetermined signal when there is no signal, and the drive means is initially set to the final excitation phase stored in the storage means in response to the predetermined signal from the signal generating means when the drive means starts driving. A recording device, comprising: a control unit for setting. 4. The control means drives the driving means in a predetermined direction at least a backlash amount of the transmission mechanism when the driving means is initialized, and then drives the predetermined amount in a direction opposite to the predetermined direction. The recording apparatus according to claim 3, wherein the driving unit is driven.