JPS6213371A - Recorder - Google Patents

Abstract

PURPOSE:To enable a recording medium to be inserted between paper-bail rollers and a platen through a simple operation without requiring new driving means, by providing an energizing means which provides the bail rollers with a tendency to move on the surface of the platen according to the rotation of the platen. CONSTITUTION:A bail arm 4 is pressed toward the platen 1 through a spring 6, and as the platen 1 is rotated, the bail arm 4 is moved in the same direction while making close contact with the platen 1. In normal condition, movement of the bail arm 4 is restricted by a stopper 8, and the recording medium is discharged by passing between the platen 1 and the bail rollers 3. On the other hand, in a paper-supplying operation, the platen 1 is reversely rotated, acompanied by movement of the bail arm 4 to an outlet position between a paper guide 7 and the platen 1, at which position the arm 4 is fastened by a pawl 14b provided on a carriage 11, and the recording medium coming out of an end part of the paper guide 7 is inserted between the platen 1 and the bail rollers 3. Then, the platen 1 is rotated forward, whereby the bail rollers 3 are returned to normal positions while clamping the medium between them and the platen 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording device, and particularly to a recording device that performs recording using a predetermined method on a recording medium loaded on a cylindrical platen.

[Prior Art] Recording devices of various types have conventionally been used as recording output devices such as computers or typewriters. Various materials such as paper and plastic film are used as recording media. In addition, various shapes of recording media such as roll paper, fan-hold paper, sheet paper, etc. are used.

[Problems to be Solved by the Invention] In devices using sheet-shaped recording media, it is necessary to load each sheet of media onto a platen, and various types of automatic loading devices have been proposed for this purpose. .

By the way, in a recording apparatus using a cylindrical platen, in order to perform recording by pressing the recording medium against the platen reliably, a so-called bail roller is provided near the recording head to press the medium against the platen. This bail roller is configured so that it can be detached from the platen during paper feeding, and after the recording medium has been fed to a fixed position, the bail roller is returned to press the medium against the platen, and the bail roller is removed from the platen. to the platen.

Such a configuration is absolutely necessary to maintain recording accuracy. Therefore, in the past, even if the apparatus had an automatic paper feeding mechanism, there were some apparatuses in which the bail roller had to be moved manually. Further, when automating the operation of the bail roller, a new driving means is required, which has the drawback of making the paper feeding mechanism complicated and expensive.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a recording apparatus that presses a recording medium against a cylindrical platen with a bail roller and performs recording on the recording medium on the platen. , a biasing means is provided that gives the bail roller a habit of moving on the platen surface in accordance with the rotation of the platen, and the bail roller is moved by the platen drive to a position where the medium is inserted between the platen and the bail roller when the recording medium is loaded on the platen. The configuration was adopted.

[Function] As shown in Fig. 1, a payload arm 4 is supported parallel to the shaft 2 of the platen 1 via an arm 5.5 having a long hole in the center. A bail roller 3.3 is rotatably provided.

The pail arm 4 is pressed against the platen 1 via a spring 6, and as a result, when the platen 1 rotates, the pail arm 4 tends to move in that direction while remaining in close contact with the platen 1.

Under normal conditions, the stopper 8 restricts the movement of the pail arm, and as a result, the recording medium is ejected through the platen 1 and bail roller 3.

On the other hand, when feeding paper, the platen 1 is reversed, and accordingly, the pale arm 4 is moved to the exit position between the paper guide 7 and the platen 1, and at this position, the claw 1 provided on the carriage 11
4b engages the pail arm 4 so that the recording medium coming out from the end of the paper guide 7 is inserted between the platen 1 and the bail roller 3. After that, the gear ridge 11 engages and fixes the bail arm 4, so if the platen 1 is rotated in the forward direction, the bail roller 3 returns to the home position with the recording medium sandwiched between them. Paper can be reliably fed without providing a driving means, and the bail roller reliably moves to a position where the recording medium is brought into pressure contact with the platen l without requiring troublesome operations unlike the conventional ones.

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

FIG. 1 is a perspective view showing the configuration of a recording mechanism of a recording device employing the present invention. Rotationally driven by a driving means. Guide bars 9 and 10 are arranged parallel to each other along the platen 1, and a carriage 11 carrying a recording pad 12 for performing a recording operation according to a predetermined method runs on the guide bars left and right (arrow A in FIG. 1, A recording operation is performed by sliding in the direction B). In addition to the recording pad 12, the carriage 11 is loaded with a ribbon cassette 13, and the ink ribbon stored in the cassette 13 moves in front of the recording pad 12 and is attached to the ink ribbon by thermal transfer, impact, or other method. The ink is transferred to the recording medium on the platen 1. Further, a guide plate 14 made of a transparent acrylic plate or the like is provided at the front end of the carriage 11 to bring the recording medium into close contact with the platen l, and a projection 14a is provided at the left end of the guide plate 14. Also, a protrusion 14b is provided at the right end.

On the other hand, the lower half of the platen 1 is covered with a paper guide 7 having the same curvature as the platen, and a known automatic method is used between the platen 1 and the paper guide 7 from the rear of the platen 1.
Alternatively, paper feeding is performed by manually inserting the recording medium. Further, an arm 5 is rotatably supported on the shaft 2 of the platen through a central elongated hole. A pale arm 4 whose central portion 4a is bent into a U-shape is supported at the tip of the arm 5 passed through the left and right shafts 2.

On the left and right sides of the pail arm 4 are bail rollers 3.
3 is rotatably supported. Further, the left arm 5 is provided with a projection 5b, to which both ends of a spring 6 are connected, and the spring 6 passes through the rear side of the shaft 2. Therefore, arm 5 has spring 6
As a result, the bail roller 3 is pressed against the platen 1.

With the above configuration, the arm 5 and the pale arm 4
When the platen 1 rotates, it tries to move while remaining in close contact with the platen 1 in the direction of rotation. When the platen 1 sends a recording medium upward in FIG. 1 in front of the recording head 12, the pail arm 4 tends to rotate along the platen 1 toward the opposite side of the diagram. However, the right arm 5 is moved by a stopper 8 provided on the main body of the apparatus, and as a result, during normal recording operation, the bail arm 4 is stopped at this position, the bail roller 3 is rotated, and the recording medium is fed.

Next, FIG. 2 shows a block diagram of a control system for controlling the above configuration. In FIG. 33 and a recording control section 34 to control each of the above members. Here, the platen motor 32 is connected to the shaft 2 and controls the rotation of the platen l, and the carriage motor 33 is connected to the carriage 11 via a belt or the like and moves the carriage in the left-right direction in FIG. The recording control section 34 is connected to the recording head 12 and other necessary members to perform a recording operation in a predetermined manner.

Next, the operation of the above configuration will be explained with reference to FIGS. 3 to 5. FIG. 3 is a flowchart showing the control procedure performed by the control device 30, and FIGS.
The figure is a sectional view showing the operation of the configuration of FIG. 1.

To feed paper, the control device 30 moves the carriage l via the carriage motor 33 in step S1 in FIG.
1 in the direction of arrow A in FIG. 1 and positioned at the center of the platen 1.

Subsequently, in step S2, the control device 30 causes the platen motor 32 to rotate the platen 1 in a direction opposite to the normal conveyance direction, that is, in a direction towards the user. As a result, the bail roller 3 and the pail arm 4 that are pressed against the platen 1 move downward according to the rotation of the platen, and the bail roller 3 is moved to the vicinity of the opening of the platen 1 and the paper guide 7.

With the bail roller moving as shown in FIG. 4, the gear ridge l1 is further moved by a small amount in the direction of arrow A, and the notch 4b provided on the inside of the U-shape of the bail arm 4 is formed by the protrusion 14b on the right side of the guide 14. , thereby locking the pale arm 4. Here, a recording medium is inserted between the rear of the platen 1 and the paper guide 7 by manual or automatic control, and in step S3, the recording medium is inserted by the control device 30.
rotates the platen in the normal paper feed direction. As a result, the recording medium is loaded through the paper guide 7 between the platens 1 and inserted between the platen 1 and the bail roller 3 at the exit from the paper guide. Furthermore, in step S4, the carriage 11 is moved a small amount in the direction B in FIG. 1 to disengage the protrusion 14b and the notch 4b, and the platen continues to be driven to rotate.

As a result, in step S5, the bail roller 3 revolves and moves upward as shown in FIG. 5 with the recording medium sandwiched between it and the platen l, and when the right arm 5 is stopped by the stopper 8, the bail arm is moved. stops.

Here, in step S6, the drive of the platen 1 is stopped,
The recording medium is stopped when the upper end of the recording medium slightly protrudes from the bail roller 3.

Thereafter, the recording operation is sequentially performed line by line by the recording head l2 in the same manner as in the conventional method, and the recorded recording medium is sequentially conveyed upward by the platen l. At this time, the bail roller 3 idles at the position shown in FIG. 5, and the recording medium is fed.

When performing pack feeding using the platen 1 due to the necessity of recording special characters, etc., the carriage 1l is moved to the left end of the platen l, and the platen l is then reversed. As a result, the pail arm 4 tries to move downward along the platen l, but since the protrusion 5a of the arm 5 comes into contact with the protrusion 14a of the guide l4, it does not move further downwards, and therefore the bail roller or the pail arm moves into the recording area. This will prevent it from dropping to.

As described above, 1. According to the present invention, there is no need for a new driving means, and furthermore, the recording medium can be inserted between the bail roller and the platen without performing troublesome operations, and the advantage is that a reliable paper feeding operation can be performed. There is.

Although a type of recording apparatus using an ink ribbon has been exemplified as a recording method, the recording method is not limited to this, and inkjet or other methods may be used.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the configuration of a recording system of a recording apparatus according to the present invention, FIG. 2 is a block diagram of a control system of the apparatus shown in FIG.
3 is a flowchart showing the control procedure of the control device shown in FIG. 2, and FIGS. 4 and 5 are sectional views showing the operation of the mechanism shown in FIG. 1. 1...Platen 3...Bail roller 4...
Pale arm 5...Arm 11...Gear ridge
12...Recording pad 13...Ribbon cassette 14...Fronadat time of guide control Fig. 3 Model drunk rhyme chart Fig. 4 jfi product 1 fl TIII record Fig. 5

Claims (1)

[Claims] In a recording apparatus that presses a recording medium against a cylindrical platen with a bail roller and performs recording on the recording medium on the platen, the bail roller is provided with an urging means that gives the bail roller a habit of moving on the platen surface in accordance with the rotation of the platen. A recording apparatus characterized in that, when loading a recording medium onto the platen, the bail roller is moved by driving the platen to a position where the recording medium is inserted between the platen and the bail roller.