JP2556485B2 - Recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a recording apparatus in which a recording medium is automatically set on a platen roller.

[Prior art]

In conventional printing devices such as typewriters, printers, and word processors, the platen is manually rotated to wind the paper for printing around the platen and insert the paper, and then the platen and press roller are connected. Manually release the pressure contact, leave the paper in a free state, manually overlap the line at the leading edge of the paper with the line at the trailing edge of the paper, visually check the parallelism of the paper, and then re-attach the platen to the platen. By press contacting with the shear roller, the setting of the paper to the printer has been completed.

Therefore, an automatic setting method has been proposed in which a paper guide placed on a carriage guides the paper in the direction between the paper bail and the platen which are located away from the platen. This printing device always moves the carriage to a predetermined center position when the paper is set.

[Problems to be solved by the invention]

However, printing devices that set various sizes of paper on the left side, such as printing devices used for Japanese word processors, have the drawbacks of skewing the paper and catching one end of the paper with the bail roller. .

The present invention provides a recording apparatus capable of reliably setting recording media of all usable sizes and setting directions in a recording apparatus regardless of whether automatic paper feeding or manual paper feeding is performed. The purpose is to do.

[Means for solving problems]

The present invention to achieve the above object is a recording device,
A platen roller that can convey recording media of different sizes and set directions; a first guide that is provided below the platen roller and that conveys the recording medium; a carriage that moves along the platen roller; A second guide that is mounted on the carriage and that conveys a recording medium, an automatic paper feed unit that automatically feeds paper based on an instruction from an external host device, and a manual paper feed that manually feeds paper based on an operator's operation. Paper means, a judgment means for judging whether the paper feed is automatic paper feed or manual paper feed, and when the judgment means judges that the paper feed is automatic paper feed, it is designated by the external host device. The first mode in which the carriage is controlled to be moved by a predetermined movement amount corresponding to the size and the setting direction of the recording medium, and the determination unit is manually fed. And a second mode for controlling the carriage to move to a predetermined specific position where the second guide can guide the recording media of all usable sizes and setting directions. And a control means having the same.

[Action]

According to the present invention, it is determined whether the paper is fed automatically or manually, and the movement of the carriage is controlled in accordance with each paper feeding method. It is possible to reliably set the recording medium of all usable sizes and setting directions in the recording device.

Embodiments Embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is an explanatory diagram of a recording apparatus according to an embodiment of the present invention.

In the figure, the automatic paper feeding device 1 is attachable to and detachable from the recording device 3. In the automatic paper feed mode, the cut paper 4 of the size designated by the external host device 22 (described later) is stored in the cassette 2 attached to the automatic paper feed device 1, and Based on the start command, a control circuit 21 (described later) in the printing apparatus operates to feed the paper.
That is, the motor 5 is driven based on the start command, the hopper roller 6 is rotated in the direction of the arrow, and the lifting member 7 is moved.
As a result, the paper 4 is pressed by the rotating hopper roller 6, and the paper 4 is fed by frictional force.

The paper 4 is separated by the action of the separating claw 8 and only the uppermost one paper is fed along the guide member 9 toward the platen roller 10 of the recording apparatus 3. The paper 4 drawn by the rotation of the platen roller 10 and the first press roller 11 pressed against the platen roller is fed along the paper pan 12 which is a paper guide, and the second press roller 13
After passing through, the paper guide 14 placed on the carriage 19 is guided to proceed upward. The carriage 19 can reciprocate along the guide shaft 20 in the direction perpendicular to the paper surface. At this time, the carriage is the host device 22
Since the paper 4 is guided by moving to the center position of the paper width set on the left reference according to the paper size specified from,
It is possible to prevent the entire paper from being lifted from the platen roller and the edge of the paper from being lifted from the platen.

In addition, the paper bail 15 is synchronized with the rotation of the platen 10.
Is moved to a position indicated by a chain line by a paper bale drive motor 28 described later, the paper 4 advances to a designated position without being obstructed by the paper bail, and then the paper bail 15 moves back to platen the upper end of the paper. Press to 10. When the upper end of the paper reaches a predetermined position, the platen roller 10 stops and the paper set ends.

After this, the carriage 19 is moved to a predetermined waiting position to prepare for printing. Printing is performed by a recording mechanism 27 (described later) provided on the carriage in response to the print signal. The printed paper is sequentially sent upward along the front guide 16 and sent to the stacker 18 by the paper discharge roller 17.

On the other hand, in the manual paper feed mode, the paper 4 is inserted from the direction indicated by the arrow 30 as the left end reference. Then, the paper feed switch 32 described later is turned on. As a result, Carriage 19
Moves to a specific feed position that the paper guide 14 can guide for all settable size and set orientation papers.

FIG. 2 is an explanatory view exemplifying the positional relationship between the paper of an insertable size and direction and the paper guide 14 when the carriage is at the feeding position.

In FIG. 2, as an example of the size and direction of the paper used, the case of B5 length (width 182 mm) to B4 width (width 364 mm) is illustrated.

At this feed position, the paper guide 14 can guide the paper (B5 length) having the smallest width among the insertable paper.

That is, in this feeding position, the center of the paper guide 14 is at a position 153.4 mm from the left end standard for setting the paper, and is located to the left of the position 182 mm at the right end of B5 which is the right end of the minimum width. Therefore, for all settable paper, the paper guide 14 guides them well,
The paper set can be reliably performed.

Therefore, it is possible to prevent the lifting of the entire paper from the platen roller and the lifting of the paper from the platen at the edge of the paper.

In addition, the paper bail 15 is synchronized with the rotation of the platen 10.
Is moved to a position indicated by a chain line by a paper bale drive motor 28 described later, the paper 4 advances to a designated position without being obstructed by the paper bail, and then the paper bail 15 moves back to platen the upper end of the paper. Press to 10. The upper end of the paper moves to a predetermined standby A position to prepare for printing. When the printing position is reached, the platen roller 10 is stopped and the paper setting is completed.

Thereafter, the carriage 19 is provided with a recording mechanism 27 (described later) provided on the carriage by a predetermined signal.
Is printed. The printed paper is sequentially sent upward along the front guide 16 and sent to the stacker 18 by the paper discharge roller 17.

FIG. 3 is a block diagram of a system for realizing the printing and paper setting process described above.

In FIG. 3, a control circuit 21 (abbreviated as CPU) of the recording device is connected to an external host device 22 such as a computer or a word processor, and receives a print data signal and a necessary command signal (command).

The CPU 21 controls various drive systems such as a carriage drive motor 24, a sheet conveyance motor 25, a paper bale drive motor 26, and a paper feed motor 5 via a driver (drive circuit) 23, and prints from the host 22. The recording mechanism 27 is driven based on the data signal.

The operation of the recording device is controlled based on a program stored in the memory ROM 28 provided in the CPU 21.

In addition, the CPU 21 executes an initial process to position the carriage at the home position (reference position) by turning on the power, and waits for data from the host 22 and KEYSW.
Wait while idling while performing sense processing such as sense.

Next, the operation of this embodiment will be described in detail with reference to the flow charts of FIGS.

First, in step S1, when the CPU 21 receives the start command of the host 22, the paper size, and the direction command signal, for example, "01" through the signal line S1, it is not the manual paper feed mode (the automatic paper feed mode). To judge. And CPU21
Indicates the specified paper size and direction (in this example, "01" in this example) from the carriage position table 29 stored in the ROM 28 as illustrated in FIG.
The best position of the carriage corresponding to B5 length), that is, the step value of the stepping motor (02d8HEX in this example) up to the center position of each paper width is taken out and stored in the step counter 31 in the memory RAM30 (steps S2 to S10). . C
PU21 moves the stepping motor 24 for driving the carriage to the right to move the carriage to the best position.
A drive signal is applied through the signal line S2 and the driver 23 to move the step (step S11). CPU21
Every time one step is applied, the step counter 31 is decremented by -1 and the decrement is repeated until the step S12 and the step counter become 0 (step S1).
3).

As described above, the carriage is located at the center of the paper width of the paper to be set.

When the carriage moves to the center position, the paper is fed (step S14). After that, the print standby position is provided at a position different from the time of feeding, so the carriage moves to the print standby position (step S15) and the recording signal Start recording (step S16).

On the other hand, when the CPU 21 detects in step S1 that the paper feed switch 32 of the recording apparatus shown in FIG. 3 is turned on, it determines that the manual paper feed mode is set. Then, in step S17, the step value 0200HEX up to the carriage feed position shown in FIG. 2 is stored in the step counter 31.

 After that, steps S11 to S16 are executed.

According to the above-described embodiment, when the sheet inserted between the platen and the paper guide below the platen is fed by the platen and set, the carriage is designated from the host device in the automatic sheet feeding mode. Move it to the center position of the paper width set on the left according to the specified paper size and direction, and use the paper guide placed on the carriage to move the paper between the paper bail and the platen that are far from the platen. Since it is guided in the direction, it is possible to perform stable automatic paper feeding.

On the other hand, in the manual paper feed mode in which the paper size and the set direction cannot be specified in advance, the carriage is not limited to the center of the recording width that can properly guide all the papers of the usable size and direction of the recording device. Since it can be moved, it is possible to perform stable automatic paper feeding.

Since the carriage movement for guiding the paper has two modes as described above, it is possible to cope with the case where various sizes of papers are used without being designated in advance in the manual paper feed mode, and a specific mode In the automatic paper feed mode in which it is highly likely that a large number of sheets of paper will be continuously used, it is possible to feed paper according to the situation that safer paper guide can be performed.

For example, although the paper bail is used in the above-described embodiment, the same operation can be performed in a recording device without a paper bail.

Further, in the above-mentioned embodiment, the component serving as the second guide is placed on the carriage, but if the ribbon cassette itself has a shape serving as the guide, it can be carried out without separately mounting the second guide.

Further, the second guide does not need to be a separate part from the carriage, and can be formed integrally. Further, in the above embodiment, the carriage is moved to the center position of the paper width, the paper is fed by the rotation of the platen roller, and then the carriage is moved to another recording standby position. You may control so that it may be done.

[Effect] As is clear from the above description, according to the present invention, it is possible to provide a recording apparatus that can always automatically and safely set a paper even if the paper size and the set direction are different.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a recording apparatus in which an automatic paper feeding device is set according to an embodiment of the present invention. 2 is an explanatory diagram showing the positions of the paper to be set and the paper guide, FIG. 3 is a block circuit diagram, FIG. 4 is a flow chart diagram, and FIG. 5 is an explanatory diagram of a carriage position table. 4 sheets, 10 platen roller, 12 paper pan, 14 paper guide, 19 carriage, 21 CPU, 22 host device, 27 recording mechanism, 31 step counter, 32 switch.

Claims (1)

(57) [Claims] 1. A platen roller capable of transporting recording media of different sizes and set directions, a first guide provided below the platen roller for transporting the recording medium, and moving along with the platen roller. Carriage, a second guide mounted on the carriage for conveying a recording medium, an automatic paper feeding means for automatically feeding paper according to an instruction from an external host device, and a manual paper feeding operation by an operator. Manual feeding means for feeding paper, judging means for judging whether the paper feeding is automatic paper feeding or manual paper feeding, and when the judging means judges that the paper feeding is automatic paper feeding,
A first mode in which the carriage is controlled to be moved by a predetermined movement amount corresponding to the size and setting direction of the recording medium designated by the external host device, and the determination unit manually feeds paper. And a second mode for controlling the carriage to move to a predetermined specific position where the second guide can guide the recording media of all usable sizes and set directions. A recording device comprising: a control unit having: