JPS6018367A - recording device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

TECHNICAL FIELD The present invention relates to a recording apparatus that performs recording by passing recording paper between a recording head and a platen roller.

Prior Art FIG. 1 schematically shows a line-type thermal printer, in which a thermal head 4 supported by a head holder 3 is brought into pressure contact with a platen roller 2 which is rotationally driven by a motor 1, and a recording paper 5 is passed between the two. It is recorded using paper. Here, to set the recording paper 5, the operator inserts it along the paper guide 6.7 up to the platen roller 2/pressure roller 8 portion, and then inserts the recording paper 5 into the platen roller 2.
The motor 1 is driven to feed and set by turning a knob provided on the shaft or pushing a feed button. However, in such a system, the apparatus becomes large in size in order to secure a space for installing the paper guides 6 and 7. Also, for the operator, the recording paper 5
The setting operation is troublesome.

In this regard, it can be said that if the platen roller can be moved away from the thermal head, the operability of setting the recording paper will be improved. However, the platen roller is driven by a motor, and when the platen roller is displaced, the transmission system becomes complicated.

OBJECTS The present invention has been made in view of the above points, and an object of the present invention is to provide a recording apparatus that can improve the operability of setting recording paper without complicating the apparatus.

4i1! An embodiment of the present invention will be described with reference to FIGS. 2 to 6. The present invention is applied to a line-type thermal printer, and basically the thermal printer 10 and the platen roller 11 are brought into opposing contact with each other, and the platen roller 11 is connected to the platen roller 11 by a drive transmission means 16 including a pulley 12, 13, a belt 14, and a motor 15. Recording is performed while rotating the recording paper 17 and feeding the recording paper 17.

Here, the thermal head 10 is held by a head holder ]8, and the head holder 18 is rotatable about a support shaft 20 with respect to a base frame 19. The thermal head 10 is pressed against the platen roller 11 by a pressure spring 21.
As will be described later, a stopper (not shown) is provided to restrict the amount of rotation of the thermal head 10 so that when the platen roller 11 is displaced away from the platen roller 11, the pressure spring 21 is not displaced more than necessary. Therefore, the thermal head 10 is fixedly provided.

On the other hand, the platen roller 11 is rotatably held by a box-shaped frame 22 that serves as a flip-up member. This frame 22 is rotatable to open and close by a support shaft 23 provided on the rear end side of the base frame 19, and has a shape that largely covers the top of the base frame 19. Here, spindle 2
A pressure plate 24 is in pressure contact with the frame 22, and restricts rapid rotation of the frame 22. Further, a drive transmission means 16 such as a motor 15 is also attached to the frame 22 (see FIG. 2). Incidentally, a lock pawl 27 is provided on the front end side of the frame 22 and is rotatable about a support shaft 25 and is biased by a spring 26 to lock onto the support shaft 20 . This locks the frame 22 in the closed state.

Furthermore, the base frame 1 is connected to the lower end of the frame 22.
A leaf spring 28 attached to the lower surface of 9 is engaged and biased upward. Furthermore, the frame 1122 has a support shaft 2.
A release lever 30 is provided which is rotatable about 9 and whose lower end extends to the lock pawl 27.

The upper end of this release lever 30 serves as an operating section 30a, and is pushed downward by a leaf spring 31 whose one end is fixed to the frame 22. Further, the frame 22 is provided with a set detection switch 32, which is set so that the switch is closed by a convex portion 33 on the base frame 19 when the frame 22 is closed. A stopper bin 34 is provided on the rear end side of the frame 22 to abut against the rear end of the base frame 19 during opening to regulate the amount of opening.

Note that the support shaft 25 also serves as a guide roller for the recording paper 17.

In such a configuration, the recording paper 17 is set by opening the frame 19 and moving the platen roller 11 to the thermal head 1.
This is done by moving away from 0. At this time, first,
The frame 19 is unlocked as shown in FIG.

That is, the user lifts up the operating portion 30a of the release lever 30 and rotates the lock pawl 27 counterclockwise to remove it from the support shaft 20. This allows the frame 19 to be opened, as shown in FIG. At this time, the amount of opening is regulated by the collar pin 34 coming into contact with the base frame 19. In this state shown in Fig. 5, the base frame 1
A holder 35 for the recording paper 17 is exposed on the holder 9, and it is sufficient to set the roll-shaped recording paper 17 on this holder 35 and pull out its leading end toward the thermal head 10. In other words, frame 2 opens wide at approximately 90 degrees.
2, when viewed in the closed state, a storage chamber for the rolled recording paper 17 is formed, allowing the apparatus to be made smaller and easier to set. Furthermore, when the frame 22 is opened, the drive transmission means 1 such as the motor 15 as well as the platen roller 11
6 also rotates at the same time, there is no change in the transmission state and the structure can be simplified, and the platen roller 11 can be rotated with high accuracy during the recording operation, improving the sub-scanning accuracy.

Thereafter, as shown in FIG. 3, by closing the frame 22, the storage 1- of the recording paper 17 is completed.

That is, the pulled-out portion of the recording paper 17 is guided by the guide roller (support shaft 25) and is pressed by the platen roller 11 which comes into contact with the thermal head 10, and is held between them. The frame 22 is locked by the lock claw 27 engaging the lower skin shaft 20 biased by the spring 26.

Note that during this engagement, the frame 22 is urged upward by the leaf spring 28, so no rattling occurs. In addition, with the frame 22 closed, the set detection switch 32 is pressed by the convex portion 33 and turned ON, and the thermal head 1
0 can be energized.

Then, the recording operation begins.

Although this embodiment is applied to a thermal printer, it can also be applied to a recording apparatus that uses an impact head, an inkjet head, or the like as a recording head.

Effects Since the present invention is configured as described above, the recording paper can be easily set by rotating the flip-up member in an open manner to move the platen roller away from the thermal head, and at this time, the platen roller is driven. Since the driving force transmitting means is also rotated and displaced, there is no displacement of the driving force transmitting path. Therefore, the structure can be made simple and compact, and the paper can be fed with high precision during recording.

[Brief explanation of drawings]

Fig. 1 is a schematic side view showing a conventional example, Fig. 2 is a side view showing an embodiment of the present invention, Fig. 3 is a vertical side view, Fig. 4 is a longitudinal side view showing different cross sections, and Fig. 5 6 is a longitudinal side view showing the release operation, and FIG. 6 is a side view showing the open state. 10...Thermal head (recording head), 1 dot platinum roller, 15...Motor, 16...Drive transmission means, 22...Frame (spring-up member) Applicant Rico Co., Ltd. -

Claims (1)

[Claims] In a recording device that performs recording by passing recording paper between a recording head and a platen roller, the recording head is fixedly provided, and an opening/closing circuit is used to hold the platen roller and move the platen roller toward and away from the recording head. A recording apparatus characterized in that a movable flip-up member is provided, and the flip-up member holds a drive transmission means including a motor for driving the platen roller.