JPH0376695A - Recording apparatus using pencil pen - Google Patents

Abstract

PURPOSE:To reduce impact force by stepwise applying writing pressure power when writing pressure is applied to a pencil pen. CONSTITUTION:When a pencil pen 1 is present at an landing point, stepwise writing pressure power rising gradually is applied and, at first, writing pressure power about half power obtaining desired writing pressure is applied. At this time, the impact force to the pencil pen 1 becomes intstantaneously large but it becomes far smaller than that of a conventional apparatus and, thereafter, predetermined writing pressure power D is applied in order to obtain proper writing pressure. As a means for applying writing pressure power, an ROM storing a predetermined writing pressure applying pattern is provided in a control circuit 4 and a processor reads the stored program of the ROM and controls the pen up-and-down moving circuit and actuator 32 of the next stage to apply writing pressure. By this method, the impact force received by the pencil pen 1 is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording device for recording images such as characters and figures.

[Conventional technology]

2. Description of the Related Art As a recording apparatus of this type, there is a conventional recording apparatus that records images using a pencil pen, as shown in FIG. Third
The figure is a sectional view showing an example of a pencil pen configured to be used by being attached to such a recording device. In the figure, 1 is a pencil pen, and 2 is a pencil lead. The pencil pen 1 includes a knock mechanism 11, a lead chuck mechanism 12, a tip 13, and a case mechanism 14.

The knock mechanism 11 has a lead tank 111 that holds one or more pencil leads 2. In order to feed out the pencil lead 2 in the lead tank 111, the knocking mechanism 11 is configured to be able to push out the lead chuck mechanism 12.

The lead chuck mechanism 12 takes in the pencil leads 2 one by one from its lead entrance 121, and when pushed down by the above-mentioned knock mechanism 11, the lead chuck 122 at the tip is pushed open and is configured to feed out the pencil leads 2. ing.

The distal tip 13 protects the pencil lead 2 that has been drawn out with its rubber ring 131 and holds it with a predetermined frictional force.

The pencil lead 2 can be brought into contact with the tip chimney 13 by moving the knocking mechanism 11 up and down multiple times and causing the lead chuck mechanism 12 to perform the gripping and releasing operation multiple times. At this stage, the pencil pen 1 is attached to a pen carriage 3 of a recording apparatus as shown in FIG. 2, for example. This attachment is achieved by attaching the pencil pen 1 to the pen holder 35 of the pencil carriage 3 via the holding mechanism 142 of the case mechanism 14.

The Ben carriage 2 includes a base 31, an actuator 32 attached to this base 31, and this actuator 32.
The pen arm 34 is coupled to a pen arm 34 to move up and down, a pen holder 35 attached to the pen arm 34, and a position detector 37 for detecting the vertical displacement of the pen holder 35. As described above, the pen holder 35 to which the pencil pen 1 is attached can move the pencil pen 1 up and down along the slide bearing 33 by the pen up and down signal applied to the actuator 32, and can also change its up and down position. It can be read by the position detector 37.

Furthermore, this Ben carriage 3 has a stopper 36 that engages with the tip 13 of the pencil pen 1 when the pencil pen 1 is held in the above-mentioned pen holder 35. This stopper 36 cooperates with the distal tip 13 to achieve automatic core feeding operation during writing.

Now, assume that the tip of the pencil lead 2 of the pencil pen 1 is held by the rubber ring 131 of the tip 13 with a predetermined frictional force by a plurality of consecutive knocking operations, as described above.

The control circuit 4 of the device generates a pen down signal.

The actuator 32 of the pencil carriage 3 is energized to lower the pen holder 35 by a predetermined amount, thereby lowering the pencil pen 1. FIG. 2 shows this down state.

The tip 13 of the pencil pen 1 is in contact with the stopper 36 of the Benn carriage 3 and is pushed up relative to the pencil pen 1.

Since the pencil lead 2 is held by the lead chuck mechanism 12, it is stopped at that position.

From this state, a pen-up signal is applied to the actuator 32 shown in FIG. The pencil pen 1 is raised, so that the tip 13 does not sink in.

In this pencil lead 1, the frictional force that holds the tip 13 against the pencil lead 2 is made larger than the holding force of the pencil lead 2 in the feeding direction of the lead chuck mechanism 12, so the tip 13 is prevented from slipping in. This allows the pencil lead 2 to be drawn out by a predetermined amount. A recording operation is performed when the amount of protrusion of the pencil lead 2 is appropriate.

[Problem that the invention seeks to solve]

By the way, in such a recording device using a pencil pen, it is necessary to perform appropriate pen pressure control in order to obtain high-quality drawings.

In the conventional device described above, the pen pressure application operation shown in FIG. 1(e) was performed.

As shown in FIG. 1(a), the pencil pen l is lowered to perform recording via the actuator 32 shown in FIG. This down motion is controlled to perform a so-called soft landing motion, and the down speed of the pencil pen 1 is made as close to O as possible at the landing point B. Therefore, the impact force at the time the pencil pen 1 lands on the ground is extremely relaxed as shown by the symbol C in FIG. 1(d).

When the pencil pen 1 reached the landing point B and a very short time elapsed, a writing pressure force as shown in FIG. 1(e) was applied. Since this writing pressure power is used to instantaneously raise the power necessary to obtain the desired writing pressure, it causes a large impact force on the pencil pen 1, as shown in FIG. 1(d). It became. That is, if the pencil pen of FIG. 3 is used as an example, it can be said that the pencil lead 2 is substantially held by the lead chuck mechanism 12. The tip of the pencil lead 2 comes into contact with the recording paper surface 5 (Fig. 2), and as shown in Fig. 1 (Fig.
It is assumed that a writing pressure generating force as shown in the third issue F is applied by the writing pressure force shown in e). A lead chuck mechanism 12 that grips the pencil lead 2 is coupled to a shock absorbing spring 144 via a chuck support mechanism 143. Therefore, a part of the instantaneously applied pen pressure generating force F is absorbed by this shock absorbing spring 144, but since this shock absorbing spring 144 does not actually change the position of the core chuck mechanism 12, it has a constant force. It has become a thing.

For this reason, a large impact force was applied to the lead chuck mechanism 12 when writing pressure was generated, as shown by the symbol 3 in FIG. 1(d). This had an adverse effect on the lifespan of the core chuck mechanism (2).

The present invention was developed in view of this point, and provides a method for applying writing pressure to a pencil pen that effectively reduces the impact force.

[Means for solving problems]

Therefore, in the present invention, when applying writing pressure to the pencil pen, the writing pressure power is applied in stages.

[Effect]

By applying pen pressure power in stages, concentration of impact force acting on the pencil pen can be prevented.

〔Example〕

In the present invention, when the pencil pen I is at the landing point B as shown in FIG. First, a pen pressure power approximately half of the power required to obtain the desired pen pressure is applied (reference symbol Gl in FIG. 1(C)). The impact force on the pencil pen l at this time momentarily increases as shown in FIG. 1(b), but it is much smaller than the impact force of the conventional device shown in FIG. 1(d). Thereafter, a predetermined pen pressure power is applied to obtain an appropriate pen pressure. Normally, in this type of device, as a means for applying such pen pressure, a ROM (read-only memory) storing a predetermined pen pressure application pattern is provided in the control circuit 4 shown in FIG. The pen pressure is applied by reading out a program stored in the ROM and controlling a pen up/down circuit (not shown) and an actuator (for example, the actuator of the second signature 32) at the next stage. Therefore, in this invention, by rewriting the pen pressure application pattern in this ROM to a pen pressure application pattern that increases stepwise to the power range that generates the desired pen pressure as shown in FIG. 1(C), It can be easily implemented.

C. Effects of the invention] As explained above, according to the present invention, with a simple configuration,
The impact force applied to the pencil pen can be reduced as much as possible.

[Brief explanation of drawings]

FIG. 1 is a schematic pattern diagram illustrating the pen pressure applying pattern of the present invention in comparison with that of a conventional device; FIG. 2 is a configuration diagram showing a general Benn carriage configuration of a recording device using a pencil pen; FIG. 3 is a sectional view showing an example of a pencil pen that can be used in this type of recording device. 1-Pencil pen 11-Knock mechanism 12-Lead chuck mechanism 13-Tip tip 14-Case mechanism 2-Pencil lead 3-Ben carriage 4-Control circuit Fig. 1

Claims (1)

[Claims] A pencil pen has a lead chuck mechanism and is configured to feed out the pencil lead by gripping and releasing the lead chuck mechanism, and when recording, the pencil pen lands on the surface of the recording paper and is required after a predetermined period of time has elapsed. In a recording device using a pencil pen configured to apply a writing pressure, the means for applying the writing pressure includes a read-only memory having a gradually increasing writing pressure application pattern, and a read-only memory having a writing pressure application pattern that gradually increases. and an actuator that gradually increases the writing pressure of the pencil pen according to the writing pressure application pattern to apply the necessary writing pressure.