JPS62253478A - Recorder - Google Patents

Abstract

PURPOSE:To facilitate mounting/dismounting of a recording means by a construction wherein when a cover is opened under the condition where a carriage is placed at such position as the recording means is not mounted/dismounted easily, power supply to a carriage motor is continued so as to move the carriage automatically to such position as the recording means can be mounted/ dismounted easily. CONSTITUTION:CPU 18 monitors the position of a carriage continuously in addition to controlling normal recording, and when a microswitch 28 is turned on, it is decided that a part of the carriage 1 goes into the underside of an upper case 6 thus continuing the power supply to a carriage motor 22. When a cover 7 is opened under this condition, the microswitch 28 is turned off and the CPU 18 detects this condition and drives the carriage motor 22 through a driver 21 so as to move the carriage to an easily mountable/dismountable position. Consequently, an ink ribbon cassette 8 or a correction ribbon 10 arranged at the under side thereof can be replaced without trouble.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording apparatus, and more particularly to a recording apparatus in which recording means such as a ribbon cassette, a recording element, and an ink ribbon can be easily attached and detached.

[Prior Art] A recording apparatus is known in which a carriage that reciprocates along a platen is provided with a recording element such as a daisy wheel, a recording means such as an ink ribbon cassette, or a correction ribbon in a removable manner.

In conventional devices of this type, when replacing the ink ribbon cassette, recording element, correction ribbon, etc., the cover must be opened to expose the recording means.

When the cover is opened during this replacement work, the power to the motor that fixes the carriage in a predetermined position is cut off at the same time, leaving the motor in a free state, and in this state recording means such as recording elements can be attached and detached. .

Problems to be Solved by the Invention C] By the way, if the structure described in -B is adopted, the stopping position l of the carriage at the time the cover is opened is arbitrary; In some cases, the ink ribbon cassette or the like may be stopped in a position where it is difficult to attach or remove it, or it may get inside the casing of the apparatus and the recording means may be stopped at a position where it is impossible to attach or detach it.

In such a case, the user must move the carriage to a position where the recording means can be easily attached or detached, which is extremely troublesome.

In addition, the feed dog for the ink ribbon is provided on the carriage side, and when the ink ribbon cassette is attached to the carriage,
In a recording device in which the feed dog is pressed against the ink ribbon winding side of the ink ribbon cassette, when the ink ribbon cassette is attached or removed, the feed dog must be released using a lever or the like, which is extremely troublesome. There was a problem.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides means for detecting that the carriage is in a position where it is difficult to attach or detach the recording means on the recording apparatus side, and We adopted a structure in which when the cover is opened, the carriage motor continues to be energized, and the carriage is automatically moved to a position where the recording means can be easily attached and detached, and then stopped.

[Function] When the above-described structure is adopted, when the carriage is located at a position where it is difficult to attach and detach the recording means, by opening the cover, the carriage can be automatically moved to a position where the recording means can be easily attached and detached.

[Example] Hereinafter, the present invention will be described in detail based on an example shown in the drawings.

FIG. 1 and the following illustrate one embodiment of the present invention. In the figures, reference numeral 1 denotes a carriage, which is guided by a carriage shaft 2, is driven by a motor for driving the carriage (not shown), and is driven by pulleys 3, 3 (one side). (not shown) is driven by an endless belt 4 that is placed between them, and performs recording while moving along the longitudinal direction of the platen 5.

Reference numeral 6 indicates the upper case of the apparatus, and a part of the upper case is provided with a cover 7 that can be opened and closed, and covers the recording section.

FIG. 1 shows that the carriage l is on the right side and is slightly hidden below the upper case.

An ink ribbon cassette is mounted on the carriage l, and a daisy wheel type recording element 9 is also mounted on the carriage.

Referenced 10 is a correction ribbon mounted on a carriage at the bottom of the ink ribbon cassette 8.

On the other hand, a microswitch 28 is provided on the side edge of the front side of the carriage l, for example, and the microswitch 28 is provided at one end of the cover 7, the right corner in the figure.
A protrusion 7a that engages with the actuator 8 is provided.

In addition, FIG. 2 shows an ink ribbon cassette and an ink ribbon winding mechanism. In FIG. A shaft 11 is rotatably attached to one end of the lever 12.
It is supported via a. This shaft 11a is an arc-shaped notch 8a formed on the bottom plate side of the ink ribbon cassette 8.
will guide you into the cassette. A sprocket (not shown) is integrally provided on the lower side of the feed dog 11, and this sprocket and a sprocket provided on the carriage L side are connected to each other.
A toothed belt lb is stretched between the feed dog 11 and the feed dog 11, and transmits rotational force to the feed dog 11. The sprocket la is rotated by a motor (not shown) attached to the lower surface of the carriage l.

On the other hand, the other end of the lever 12 is rotatably supported via a shaft 13b by a row 13a of a solenoid 13 fixed on the carriage l.

Further, a spring 14 is stretched between the lever 12 and the carriage l at a position closer to the feed i11 direction than the shaft 12a, giving the lever 12 the ability to rotate counterclockwise in the figure. There is.

Reference numeral 17 indicates an ink ribbon, one end of which is wound around the supply shaft 1b, and the other end wound around the winding shaft 15.

The method for installing the ink ribbon cassette 8 is as follows.

When the ink ribbon cassette 8 is installed, the solenoid 13 is energized to attract the rod 13a and the lever 12 is rotated clockwise in FIG.

As a result, the feed dog 11 rotates clockwise.

The ink ribbon cassette 8 is arranged at a position away from the notch 8a.

In this state, when the ink ribbon cassette 8 is mounted on the carriage 1 via a guide member (not shown), the feed dog 1
1 is set in a predetermined position without getting in the way.

If the current to solenoid 13 is cut off in this state,
The rod 13a is extended, the lever 12 is rotated counterclockwise, and the feed dog 11 passes through the arc-shaped notch 8a and comes into contact with the outer peripheral surface of the ink ribbon 17 wound around the take-up shaft 15.

In this state, when the pulley la is rotated by a motor (not shown), the feed dog 11 is rotated via the bell lb, and the ink ribbon 17 is wound up.

When removing the ink ribbon cassette 8, the solenoid 13 is energized in the same way as when installing the ink ribbon cassette 8, and the rod 13
When the lever 12 is sucked, the lever 12 rotates clockwise as shown by the arrow in FIG.

No. 354 shows a block diagram of a control circuit applied to the present invention.

In the tS3 diagram, the reference numeral 18 is a CPU (Central Processing Unit) that controls the entire device.This CPU 18 is connected to a keyboard 19 for manually inputting keys, and a display 20 that shows the input status and input results, and is constantly Monitors input status and output status.

Further, the CPU 18 controls a carriage motor 22 via a driver 21, and controls a ribbon feeding motor 24 via a driver 23.

Furthermore, the CPU 18 also controls the solenoid 13 provided on the carriage mentioned above, and controls other controlled members 2.
5 is also controlled.

The microswitch 28 is a means for detecting whether the cover is open or closed, and when it is ON, it is closed, and when it is OFF, it indicates that the cover is open. Further, the Crt71B constantly monitors the state of a microswitch 28 provided on the carriage side, and determines whether the carriage is in an appropriate position for attaching and detaching the recording means.

Next, the operation of this embodiment configured as above will be explained with reference to the flowchart shown in FIG.

When the ink ribbon breaks, the correction ribbon runs out, or the recording element needs to be replaced, the control operation shown in FIG. 4 is performed. ) is lit, etc.

In addition to performing normal recording control, the CPU 18 constantly monitors the position of the carriage, and determines whether or not the microswitch 28 is turned on in step Sl shown in FIG. Assuming that a portion of the carriage has entered the lower side of the upper case 6 as shown in FIG. 1, the carriage motor 22 continues to be energized in step S2.

When the cover 7 is opened in this state (step 33), the microswitch 28 is turned off, so the CPU 18 detecting this state drives the carriage motor 22 via the driver 21.

In step S4, the carriage is moved to a predetermined position.

This predetermined position is a position where it is easy to attach and detach, or a position where the recording means can be easily converted, for example, the center of the platen.
This location is stored in a memory (not shown) attached to the CPU.

Then, in step S5, it is determined whether the carriage has reached a predetermined position.

When the predetermined position is reached, the carriage motor 22 is turned off in step S6, the carriage is stopped, and the solenoid 13 is turned on.

In this state, the lever 12 is rotated clockwise in FIG. 2, and the feed mll passes through the notch 8a and is removed from the ink ribbon cassette 8, thereby freeing the ink ribbon cassette.

Therefore, the ink ribbon cassette 8 and the correction ribbon 10 located below can be replaced without any hindrance, and the recording element 9 can also be replaced freely (step S7).

When the replacement of the recording means is completed, the carriage motor is turned on in step S8, the carriage returns to its original position, and recording is resumed in step S9.

As described above, the recording means can be freely attached and detached at a position where the case and the like do not get in the way.

[Effects] As is clear from the above description, according to the present invention, even if the carriage is in an inconvenient position when replacing the ink ribbon or other recording means, the carriage can be moved to the specified position simply by opening the cover. Since it is configured to move to a different position, the recording means can be replaced at a position where it does not interfere with work.

Further, since the restriction of the ink ribbon cassette by the feed dog is released when the carriage moves to a predetermined position, the ink ribbon cassette can be replaced extremely easily.

[Brief explanation of drawings]

The figures are for explaining one embodiment of the present invention, and FIG. 1 is a perspective view of an electronic typewriter, FIG. 2 is a plan view of an ink ribbon cassette installed, and FIG. 3 is a block diagram of a control circuit.
FIG. 4 is a flowchart of the control operation. l... Carriage 5... Platen 6... L
Case 7... Cover 8... Ink ribbon cassette 9... Recording element 10... Correction ribbon 11.
・Ribbon feed dog

Claims (1)

[Claims] In a recording apparatus equipped with a carriage that is loaded with recording means such as an ink ribbon cassette, a correction ribbon, and a recording element and moves back and forth along a platen, means for detecting that the carriage is in an inconvenient position for replacing the recording means;
The carriage motor is equipped with a control means that continues energizing the carriage motor in response to a signal from the detection means, and a means for detecting that the cover is opened. A recording device characterized in that it is provided with means for releasing the restraint on the ink ribbon cassette.