JPH0515187B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording device, for example, a recording device that records images on a recording medium such as an electronic desktop calculator (hereinafter referred to as a calculator), an electronic typewriter, or a word processor.

[Prior Art] In recent years, electronic devices such as calculators, electronic typewriters, and word processors have become widespread. These electronic devices usually have a recording device that performs recording according to a recording signal. BACKGROUND ART As electronic devices become smaller and lighter, recording devices are also becoming smaller, and in particular, calculators with recording devices are becoming smaller. As the recording device becomes smaller, the insertion slot for the recording paper supplied to the recording device also becomes smaller, making it difficult to load the recording paper when replacing the recording paper. Recording apparatuses have been developed in which a sufficient space is secured by moving the platen when loading or replacing paper, thereby allowing for simple and quick loading. .

[Problems to be Solved by the Invention] In a recording device equipped with such a movable platen, when the platen is moved when loading or replacing recording paper, the platen is not properly attached and the recording operation is interrupted. There has been a problem in that even though input operations for recording are performed or inconveniences occur, these operations are performed by mistake, resulting in incomplete recording.

The present invention has been made to solve these problems, and an object of the present invention is to provide a recording device that can detect incomplete mounting of a movable platen and improve the operability of the recording device. .

[Means for Solving the Problems] In order to solve these problems, the present invention provides a holder behind the main body of the apparatus for printing a roll of printing paper, and a holder for printing on printing paper. , in a recording device in which a printing paper insertion port is disposed at the rear of the device main body in close proximity to a roll of printing paper mounted on the holder, a printing means for recording on the printing paper; and a printing means for recording on the printing paper; a platen having a surface facing the printing means and a surface facing the paper path surface, and a platen having a surface facing the printing means and a surface facing the paper path surface between the platen and the paper path surface with one end side in the width direction of the printing paper as an axis; The platen is rotatable between a position where a paper passage is formed from the printing paper insertion opening to the printing means and a position where the paper passage is released and the paper passage surface is exposed. The printing apparatus is provided with a detecting section that detects a moving state, and a control section that prohibits the printing means when the detecting section detects a rotating state of the platen in which the paper path is released.

[Function] With this configuration, it is possible to detect incomplete attachment of the movable platen, so it is possible to prohibit the original recording operation or input operation, or to display the incomplete attachment state, thereby ensuring safety. This allows for reliable recording.

[Example] Hereinafter, the present invention will be described in detail according to an example shown in the drawings. In the embodiments shown below, the recording device will be explained using a printing device used in an electronic desktop calculator as an example, but the present invention is not limited to this embodiment, and can be applied to computers, word processors, electronic It can be applied to various recording devices such as typewriters.

FIG. 1 shows the external appearance of a calculator equipped with the recording device of this embodiment, and in the figure, reference numerals 10, 10,
Reference numerals 11 denote an upper case and a lower case of the calculator, respectively, and various functional parts of the calculator are built into the upper case 10 and the lower case 11, respectively. Upper case 10
A keyboard 12 is arranged on the front side of the
Data entry can be performed via this keyboard. Data input from the keyboard 12 is processed by a central processing unit (not shown),
The results are displayed on the display section 14. Further, a paper cutter 15 molded from a transparent material such as acrylic resin is arranged on the upper end side of the upper case, and this paper cutter 15 is fixed to a printer lid 18 that is detachably attached to the upper case 10. Ori,
The roll-shaped recording paper 17 held in the recording paper holder 16 is cut. That is, the recording paper 17 held in the holder 16 is unwound by the operator, inserted through the insertion port 19, and after a predetermined recording is performed by the recording device, it is ejected from the recording paper output port 20 and placed in the paper cutter 15. is disconnected by.

The upper end portion 25 of the upper case 10 is rotatably supported on a shaft as will be described later, and configured to be able to be released. By operating a lock lever 26, the upper end portion 25 can be released or locked.

2 and 3 illustrate the internal structure when the upper end portion 25 is released. 31 in Figure 2
is a printer board, and various parts are fixed on this board 31. The motor 32 is a drive motor,
The rotation is transmitted to the drive pulley 34 via a gear train 32a.
is transmitted to. Drive pulley 34 and driven pulley 35
A type belt 36 is attached between them. As shown in FIG. 3, printed characters such as numbers and symbols are integrally formed on the outer peripheral surface of the type belt 36. A carriage shaft 38 is horizontally suspended between the driving pulley 34 and the driven pulley 35, and a carriage 37 is mounted so as to be able to reciprocate along this carriage shaft 38. The forward movement of the carriage 37 follows the printing.
Further, the return movement is performed by a coil spring 39 for return.

A hammer (not shown) is built into the carriage 37, and can be activated by energizing the solenoid 33.

That is, the drive pulley 3 rotated by the motor 32
4 and a driven pulley 35, the type belt 36 is rotated, and when the desired type to be recorded reaches a position corresponding to the hammer built in the carriage 37, the type belt 36 is rotated by energizing the solenoid 33.
is stopped once, and then pressed with a hammer to record on the recording paper 17 loaded between the platen 45 and the type belt 36.

A carry operation is performed in synchronization with the completion of such a recording operation, and the carriage 37 is carried up by one digit in the direction of the upper digit (rightward in FIG. 2), and the rotation of the type belt 36 is restarted. After repeating the above operation for a desired number of digits, the carriage 37 is pulled back to the home position (the left end in FIG. 2) by the coil spring 36, and a paper feeding operation is performed in synchronization with the carriage return. Note that the reference numeral 34 is an ink roller that is attached to the type belt 36 and supplies ink.

The paper is fed by a pressing means, such as a pinch roller 40.
This is carried out by holding the recording paper 17 between a feed roller 46 and a feeding means such as a feed roller 46, and rotating the feed roller 46. The feed roller 46 is rotatably attached to a shaft 47 extending horizontally on the substrate 31, while the pinch roller 40 is rotatably attached to an elastic pinch roller shaft 41 attached to the platen 45. Pinch roller 40, pinch roller shaft 41, platen 4
5 and an upper guide 55 formed continuously with the platen are integrated into a platen unit U in this embodiment. The platen unit U has at least a platen, and is constructed by combining one or more of an upper guide 55, a pinch roller 40, and a pinch roller shaft 41 with the platen.

This platen 45 has a shaft 4 fixed to the substrate 31.
A threaded coil spring 50 is attached to the shaft 46', and one end of the spring 50 is engaged with a part of the platen and the other end is engaged with a part of the substrate. It has a habit of rotating clockwise (in Fig. 2). Also, as shown in FIG.
A pin 48 is provided inside the platen 45, and this pin 48 is slidably engaged in a groove 49 formed in the platen 45. Further, an engagement hole 45a is formed in the platen 45, and by rotating the upper end portion 25 counterclockwise, the tip of the lock lever 26 is inserted into the hole 45a.
5a, the upper end portion 25 and the platen 45 can be locked to the lower case (see FIG. 4).

Further, in this embodiment, as shown in FIGS. 2 and 3, a switch 60 consisting of contact springs 61 and 62 for detecting the mounting state of the platen 45 on the side of the board is provided.
is provided, and a contact spring 61 is arranged so as to slightly protrude from the cutout on the side. These contact springs 61 and 62 are connected to a central processing unit (hereinafter referred to as CPU) 70 via lead wires, as shown in FIG. This CPU 70 is a keyboard 7 corresponding to the keyboard 12 in FIG.
2 and displays the results on a display device 73 (corresponding to the display section 14 in FIG. Recording is done via Note that the symbol 75 is a power supply.
It is connected to the CPU 70 and supplies power to the necessary locations.

In this configuration, when loading the recording paper 17 into the recording apparatus, the lock lever 26 is first pressed inward to disengage the lock lever 26 from the hole 45a of the platen 45. At this time, the upper end portion 25 rotates clockwise due to the urging force of the spring 50. Since the pin 48 fits into the groove 49 of the platen,
The platen 45 similarly rotates clockwise, and the pinch roller 40 attached to the platen 45 is separated from the feed roller 46 as shown in FIGS. 2 and 3, and the upper guide 55 and lower guide 52 are also opened. do.

In this state, the recording paper 17 can be easily loaded into the insertion slot 19 or the lower guide 52 from above.

In this state, the contact springs 61 and 62 of the switch 60 are opened as shown in FIG. 3, so the switch 60 detects that the platen 45 is not fully attached. In this case, step S3 in Figure 6
As shown in ~S5, various operations are performed based on incomplete attachment of the platen. That is, from the state of step S1 where normal processing is performed, to step S2
When it is detected that the switch 60 is turned off and the platen is incompletely attached, the step
As shown in S3, input from the keyboard 12 is prohibited, and an error is displayed in step S4. This error display is carried out, for example, by displaying a display as shown by 14a in each digit, as shown in FIG. Next, step
As shown in S5, driving of the recording device 74 is prohibited. This continues until it is detected in step S2 that the platen 45 is completely attached.

Next, when the loading of the recording paper is completed, the upper end 2
5 in the counterclockwise direction, and as shown in FIG.
to lock the upper end portion 25 and the platen 45. In this state, the switch 60 is closed by the side of the platen 45, so that the normal state is restored and the process can be returned to step S1 in FIG. 6 to perform normal processing.

In the above embodiment, the switch for detecting the mounting state of the platen was configured as a mechanical switch, but the switch is not limited to this, and may be an optical sensor using a light-emitting element and a light-receiving element, or a magnetic sensor. A magnetic switch using a sensor, a pressure switch using a pressure sensor, etc. may be used. Further, the position of the detection switch is not limited to the position shown in the figure, but for example, as shown in FIG. Good too.

Note that the recording medium conveying means constituted by the pressing means and the feeding means is not limited to the above-mentioned example, and may include, for example, known means that contribute to the conveyance of the recording medium, such as feeding means such as a feed roller, and guide means. It is something that

Note that the recording medium of the present invention is not limited to recording paper, and may be any recordable medium such as a thin plastic plate.

[Effects] As explained above, according to the present invention, incomplete mounting of the movable platen can be detected, so that the original recording operation or input operation can be prohibited, such as when loading or replacing recording paper, or It is possible to display the incomplete attachment status, allowing safe and reliable recording operations.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the external appearance of a calculator equipped with a recording device, Fig. 2 is a perspective view showing the internal structure of the printing device, Fig. 3 is a sectional view showing the internal structure when the platen is not attached, and Fig. 4 5 is a sectional view showing the internal configuration when the platen is installed, and FIG. 5 is a block diagram showing the overall configuration.
FIG. 6 is a flowchart showing the flow of control, and FIG. 7 is an explanatory diagram showing an example of the display when the platen is not attached. 36... Type belt, 37... Carriage, 4
0...pinch roller, 45...platen, 46...
...Feed roller, 60...Switch.

Claims (1)

[Claims] 1. In order to print on printing paper, a holder for mounting a roll of printing paper is provided behind the device main body, and a printing paper insertion slot is installed in the main body of the device in close proximity to the roll of printing paper mounted on the holder. In the recording device disposed at the rear of the printer, a printing means for recording on the printing paper and a paper passage surface leading from the printing paper insertion slot to the printing means are provided, and a surface facing the printing means and the paper passage surface are provided. a platen having a surface facing the printing paper, and a position where a paper passage is formed from the printing paper insertion opening to the printing means between the platen and the paper passage surface with one end side in the width direction of the printing paper as an axis, and the paper passage is released. and a detecting section for detecting a rotating state of the platen, the platen having the paper path released by the detecting section. 1. A recording device comprising: a control section that prohibits printing by the printing means when a rotational state of the printing device is detected.