JPH0471868A - Printing apparatus - Google Patents

Abstract

PURPOSE:To reduce the power consumption at the reversal time of a shuttle and to increase the speed of a printing apparatus by the reduced consumption quantity of power, in the printing apparatus having a shuttle mechanism for shaking a printing head left and right, by using an elastomer when the shuttle of usual operation is reversed and cancelling the use of the elastomer at the time of skipping. CONSTITUTION:For example, a spring 10 is provided to the end of a shaft 3 becoming the shaft of a shuttle 2 and a spacer 12 supported in a movable manner is provided between the side plate of the base frame 5 supporting the shaft 3 and the spring 10 and the spring 10 is moved left and right by the movement of the space 12. In the case of usual operation, the end part of the shuttle 2 strikes against the spring 10 at the reversal time of the shuttle 2 and, by the elastic action of the spring 10 and the reversal excitation of a linear motor 6, the shuttle 2 is decelerated or accelerated. When the shuttle 2 must be allowed to stand by one the way of printing by skipping, the spacer 12 is moved. By this method, the spring 12 is moved and, when the shuttle 2 stands by at the time of skipping, the shuttle 2 does not receive the elastic action of the spring 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] This invention relates to a printer device having a shuttle mechanism for swinging a printing hand of a line printer or the like from side to side.

In order to reduce power consumption when reversing the shuttle and improve the performance of the printer device, an elastic body is movably provided in the reversing section of the gloss tortoise that swings the printing section.2 When the shuttle is reversing during normal operation The shuttle mechanism is configured such that the elastic body and the shuttle are brought into contact with each other, and the elastic body is moved during skipping so that the elastic body does not act on the shuttle.

(Industrial Application Field) The present invention relates to a printer device such as a line printer having a shuttle mechanism for swinging a print head left and right.

Current line printers are required to be faster. For this reason, a shuttle mechanism using a beam near motor is currently being provided.

Due to high-speed operation, power consumption tends to increase. Therefore, there is a need for technology that enables lower power consumption.

[Prior Art] FIG. 6 shows a conventional shuttle mechanism, and FIG. 7 is an explanatory diagram of the operation of the shuttle shown in FIG. 6.

In the conventional shuttle mechanism, as shown in FIG. 6, a shuttle 2 that swings the printing section 1 of the printing hand is supported by a shaft 3 and a ball hair ring (not shown) so as to be movable left and right. It is driven by the principle of a linear motor 6 composed of a magnet 5 installed on the lower surface of the structure and a coil 4 installed on the lower surface of the shuttle 2.

Conventional printers with this type of shuttle mechanism 1, for example, as shown in Figure 7, print one line in 100 m5, reverse the direction of movement of the shuttle 2 in 30 m5,
Printing continues in the opposite direction. During this printing period of 100m5.

The shuttle 2 is moved at a constant speed and decelerated and accelerated in the opposite direction for 30 embryos in one reversal motion.

In synchronization with this reversing operation period, the paper feed system m of the printing paper is adjusted.

[Problem to be solved by the invention]

In the conventional shuttle mechanism as described above, when controlling the shuttle 2 to move at a certain constant speed,
Only a relatively small current needs to be passed through the coil 4, but when the direction is reversed, a large current is required due to rapid deceleration. Particularly, when increasing the printing speed of a printer device, an increase in electric power is unavoidable.

It is an object of the present invention to solve the above-mentioned problems, to reduce power consumption during shuttle reversal, and to realize high-speed printer apparatuses with less power consumption.

[Means to solve the problem]

FIG. 1 is a diagram explaining the principle of the present invention.

In the printer device of the present invention, for example, there is a spring 10 which is an elastic body at the end of a shaft 3 which is an axis of a shuttle 2, and a spring 10 is further movably supported between it and a side plate of a Heath frame I5 that supports the shaft 3. There is a spacer I2. The structure is such that the spring 10 moves left and right as the spacer 12 moves.

In normal operation, when shuttle 2 is reversed, shuttle 2
The end of the spring 10 touches the spring 10, and the shuttle 2 is decelerated and accelerated by its elastic action and reverse excitation of the linear motor.

In addition, when the shuttle 2 must be kept on standby due to skipping during printing, the spacer 12 is moved. The movement of the spacer 12 causes the spring 10 to move, so that it is not subjected to the elastic action of the spring 10 during the standby period of the shuttle 2 during skipping.

[Operation] During normal operation, when the shuttle 2 decelerates and reverses, energy is stored in the spring 10, and when it starts moving in the opposite direction, the elastic energy stored in the spring 10 is released, and the shuttle Push out 2. Therefore, less force is required to reverse the shuttle 2 by the linear motor or the like, and power consumption in reversing excitation of the linear motor can be reduced.

Further, when the paper is rapidly forwarded, that is, when the paper is skipped, the spring 10 moves and does not act on the shuttle 2, so that no power is wasted while the shuttle 2 is on standby.

〔Example〕

FIG. 2 is a schematic diagram of an embodiment of the present invention, FIG. 3 is a perspective view of an embodiment of the present invention, FIG. 4 is a detailed diagram of a spacer portion according to an embodiment of the present invention, and FIG. 5 is a diagram of the invention. FIG. 3 is an explanatory diagram of the operation of the shuttle according to one embodiment of the present invention.

In FIGS. 2 and 3, 1 is a printing section, 2 is a shuttle that swings the printing section 1, 3 is a shaft that movably supports the shuttle 2, and 4 is a coil.

5 is a magnet, 6 is a linear motor consisting of a coil 4 and magnet 5, 10 is a spring for decelerating and accelerating the shuttle 2, 12 is a spacer for positioning the spring 10, 15 is a Haas frame, 3O is a spacer 12 31 is a print head, 33 is a paper feed unit, and 34 is a printing paper.

During normal operation, when the shuttle 2 reverses, it hits the spring 10 and decelerates due to its elasticity, and at the same time,
By also energizing the linear motor 6, deceleration and acceleration are performed. In normal printing, this reversal operation continues on the left and right sides.

At this time, if there are consecutive lines without print data,
The shuttle 2 maintains a standby state on either the left or right side and rapidly feeds the printing paper 34 by a single paper feed unit 33. When it is necessary to maintain this standby state for skipping, the spacer 12 is moved in advance while the shuttle 2 is heading in one direction. When the shaft 3 reaches the position where it starts to decelerate for one reversal, the spring 10 moves aside by that amount because the spacer 12 has moved.
The shuttle 2 enters a standby state without being subjected to the elastic action of the spring 10.

The mechanism of the spacer 12 for moving the spring 10 is shown in FIG. 4, for example.

The spacer 12 is arranged along the side plate of the base frame 15.
The solenoid 30 and spring 40 move it forward and backward. The spacer 12 has a hole approximately the same size as the cross section of the shaft 3 at a portion A, and a hole larger than the outer diameter of the spring 10 at a portion B.

When part A of the spacer 12 is at the position of the shaft 3,
The spring 10 is supported at one end by a spacer 12,
The other end is brought into contact with the shuttle 2.

The spacer 12 is moved toward the front side in the drawing by the force of the solenoid 30 and the spring 40.
When the end of the spring 10 reaches the position of the shaft 3, one end of the spring 10 moves to the base frame 15 and no longer exerts an elastic action on the shuttle 2.

FIG. 5(a) shows a state in which the spacer 12 supports the spring 10. At this time, the operating speed V of the shuttle 2 changes as shown in FIG. 5(b).

That is, when printing for one line is completed and the shuttle 2 comes to the deceleration start position A, deceleration is started by reverse excitation of the linear motor 6 shown in FIG. Furthermore, when the shuttle 2 comes to the position B where it contacts the spring 1o, the spring 1
Due to the elasticity of 0, a large decelerating force is exerted (. Then, when the shuttle 2 reaches the position where the speed V=O acceleration is performed.

FIG. 5(c) shows a state in which the spacer 12 is moved and the spring 10 is freed.

At this time, the operating speed V of the shuttle 2 changes as shown in the fifth (d). Note that the state in which the spacer 12 is moved can be considered to be the same state as in the prior art.

However, in the case of skipping, the deceleration force by the linear motor 6 may be smaller than that of the conventional art because high-speed reversal is not necessary.

After one line of printing is completed, the shuttle 2 moves to the deceleration start position A'
When the motor reaches position C', the linear motor 6 starts to decelerate by reverse excitation as shown in FIG. 2, and the speed V becomes O at the first position C'. Here, the paper feed unit 3 shown in FIG.
The shuttle 2 is kept on standby for the time required for the operation 3, and the linear motor 6 is excited to start moving the shuttle 2 in the opposite direction.

In the above embodiment, the spring 10 is used as the elastic body for decelerating and accelerating the shuttle 2, but the spring 10 is not limited thereto, and other elastic materials can also be used. Furthermore, it goes without saying that the mechanism for moving the elastic body is not limited to that shown in FIG.

〔Effect of the invention〕

As explained above, according to the present invention, an elastic body is used when reversing the shuttle during normal operation, and the use of the elastic body is canceled during skipping, thereby reducing power consumption during reversal. It greatly contributes to performance improvement.

[Brief explanation of drawings]

FIG. 1 is a diagram explaining the principle of the present invention. FIG. 2 is a schematic diagram of an embodiment of the present invention. FIG. 3 is a perspective view of an embodiment of the present invention. FIG. 4 is a detailed view of a spacer portion according to an embodiment of the present invention. FIG. 5 is an explanatory diagram of the operation of a shuttle according to an embodiment of the present invention. FIG. 6 is a diagram showing a conventional shuttle mechanism. FIG. 7 shows an explanatory diagram of the operation of the shuttle shown in FIG. 6. In the figure, 1 is a printing unit, 2 is a shuttle, 3 is a shaft, 4 is a coil, 5 is a magnet, and 6 is a linear motor. 10 represents a spring, 12 a spacer, and 15 a base frame.

Claims (1)

[Claims] In a printer device that performs printing by swinging the printing unit left and right, an elastic body (10) is movably provided in the reversing part of the shuttle (2) that swings the printing unit, and normal operation is performed. When the shuttle (2) is reversed at the time, the elastic body (10) and the shuttle (2) are brought into contact, and when skipping, the elastic body (10) is moved and the elastic body (10) is attached to the shuttle (2). A printer device characterized by having a shuttle mechanism that is not operated.