JPH04127753U - Image forming device - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] To prevent the occurrence of waiting habits when waiting for roll paper. [Structure] A pressing mechanism 11 that presses the curled surface of the roll paper R in a direction to cancel the curl, and a control means that drives and controls the pressing mechanism 11, releases the pressure when the roll paper R is on standby, and presses it when recording. Equipped with. As a result, the pressing mechanism is controlled by the control means when recording on the roll paper R,
Press the roll paper R. Further, when the roll paper R is on standby, the pressure on the roll paper R is released by the control means, thereby preventing the occurrence of standby distortion.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a method for removing curls from roll paper in image forming devices such as facsimile machines. This relates to a removal device.

0002

[Conventional technology]

In an image forming device that uses roll paper, when the roll paper is ejected from the device main body. In this case, there is a problem that the paper is discharged in a curled state (curled state). So In order to remove this curl, the roll paper is , a pressing hand that causes the curled surface of the roll paper to bend in the direction that cancels the curl. A device equipped with a paper guide mechanism as a stage has been proposed.

0003

[Problem that the idea aims to solve]

However, this paper guide function is difficult to use because it constantly presses against the roll paper. Therefore, when the roll paper is on standby, pressure will continue to be applied to a certain point. However, there is a problem in that a new curved part (waiting habit) occurs in the roll paper. Ta.

0004 The purpose of this invention is to prevent the occurrence of standby distortion when the roll paper is on standby. The objective is to provide an image forming apparatus that can.

[0005]

[Means to solve the problem]

This invention uses a pressing hand that presses the curled surface of the roll paper in a direction that cancels out the curl. The step and the pressing means are driven and controlled, and when the roll paper is on standby, the pressing is released, and when recording The gist of the invention is that it is provided with a control means for pressing.

[0006]

[Effect]

The present invention configured in this way allows the control means to control the pressure when recording roll paper. The stage is driven and presses against the roll paper. In addition, when the roll paper is on standby, the control means The pressure on the roll paper is released, preventing the occurrence of standby curls.

[0007]

【Example】

An embodiment in which the present invention is embodied in a facsimile machine will be described below with reference to Figures 1 to 5. do. As shown in Figures 1 and 2, the facsimile machine has an upper case 1 and a lower case. A space 2 is provided in the back of the lower case 2 for storing the roll paper R. A storage section 3 having a U-shaped cross section is formed, and the roll paper R is stored in this storage section 3. and is rotatably supported by the side walls 2a, 2b of the lower case 2. Also, the bottom At the front of the case 2, one end of the support shaft 4a of the conveyance roller 4 that conveys the paper piece is attached to the lower case. The motor 5 is supported by the side wall 2a of the base 2, and the other end is attached to the side wall 2b. It is directly connected to the rotating shaft and can be rotated. Above this conveyor roller 4 is a receiving plate. A thermal head 6 for recording communication signals, etc. is attached to a bracket 7 on the upper case 1 of the main body. It is attached via. between the storage section 3 of the lower case 2 and the conveyance roller 4; A groove 8 having a concave V-shaped cross section extending in the width direction is formed between the rolls to be described later. This is the part on which the pressing means for eliminating the curl of the paper R acts. In addition, transportation A pair of nipping rollers 9 for nipping the roll paper R is provided between the feed roller 4 and the groove 8. and one of the clamping rollers 9 is loosely inserted into the lower case 2 while the other clamping roller 9 is inserted loosely into the lower case 2. It is rotatably supported by the side walls 2a and 2b together with the roller 9 via a support shaft 9a. . Then, the roll paper R is conveyed by the conveyance roller 4, and the upper case 1 and the lower case It is designed to be discharged from a discharge hole 10 provided between 2 and 2.

[0008] As shown in FIGS. 2 and 3, a pressing mechanism 11 as a pressing means is installed in the upper case 1. I'm being kicked. The details of this pressing mechanism 11 will be explained. The pressing mechanism 11 is provided above the roll paper R, and presses the roll paper R. A member 12, a swinging member 13 for making the pressing member 12 swingable up and down, and a software. It consists of a lenoid 14 and a plunger 15.

[0009] The pressing member 12 is formed to have an inverted mountain shape in cross section and extend in the width direction of the roll paper R. It is. The approximately V-shaped swinging member 13 is T-shaped relative to the center of the pressing member 12. connected. The swinging member 13 protrudes from the upper case 1 at its center. It is swingably supported by the extended support member 16 via a support pin 17. Sara In addition, a plug of a solenoid 14 fixed to the upper case 1 is attached to the end of the swinging member 13. A plunger 15 is rotatably connected. In this way, the solenoid 14 The swinging member 13 swings due to the protrusion or suction of the plunger 15, and the pressing member 1 2 can be pressed against and separated from the roll paper R.

0010 Next, an electrical configuration having a control means for controlling the pressing mechanism 11 will be explained. . As shown in FIG. 5, the received signal or read signal is sent to the CPU (central processing unit) 18 a motor drive circuit 19 for driving the motor 5 via the solenoid 14; It is connected to a solenoid drive circuit 20 for driving. And CPU1 8 drives the motor 5 based on the received signal or read signal, and furthermore, the solenoid 1 4 so that the pressing member 12 can press against or separate from the roll paper R. ing.

[0011] Next, the operation of the facsimile machine configured as described above will be explained. When the CPU 18 receives the received signal or read signal, the CPU 18 drives the solenoid. The circuit 20 is controlled to energize the solenoid 14. Then, as shown in Figure 4, The plunger 15 protrudes and moves the swinging member 13 counterclockwise around the support pin 17. Rotate to. As a result, the pressing member 12 moves downward and presses the roll paper R. Also , the CPU 18 controls the motor drive circuit 19 to drive the motor 5. and, When printing is done on the roll paper R, the received signal or reading signal is finished, and the printing is finished. , the CPU 18 controls the motor drive circuit 19 to stop the motor 5. Also, C The PU 18 controls the solenoid drive circuit 20 to demagnetize the solenoid 14. vinegar Then, as shown in FIG. to rotate the swinging member 13 clockwise around the support pin 17. . As a result, the pressing member 12 moves upward and separates from the roll paper R.

0012 In this way, in the facsimile machine of this embodiment, the curled surface of the roll paper R A pressing mechanism 11 that presses the curl in a direction that cancels the curl, and drive control of the pressing mechanism 11. It is equipped with a CPU 18 that releases the pressure when the roll paper is on standby and presses it when recording. This prevents the roll paper R from becoming stuck when the roll paper R is on standby. It can be prevented.

[0013] Note that the present invention is not limited to the above embodiments; for example, in the above embodiments, A solenoid 14 and a plunger 15 are used in the pressing mechanism 11, but a motor and gear are used. The swinging member 13 may be made swingable in the vertical direction.

[0014]

[Effect of the idea]

As detailed above, according to the image forming apparatus of the present invention, when the roll paper is on standby, This has an excellent effect of preventing the occurrence of waiting habits.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the appearance of a facsimile apparatus according to an embodiment.

FIG. 2 is a sectional view taken along line AA showing the inside of the facsimile machine.

FIG. 3 is a perspective view showing a pressing mechanism of the facsimile device.

FIG. 4 is a sectional view taken along line AA, showing the operating state of the pressing mechanism.

FIG. 5 is an electrical block diagram showing the electrical configuration of this embodiment.

[Explanation of symbols]

11 Pressing mechanism, 12 Pressing member, 13 Swinging member, 1
4 solenoid, 15 plunger, 18 CPU.

Claims (1)

[Scope of utility model registration request] 1. Pressing means for pressing the curled surface of the roll paper in a direction to cancel the curl; and control means for driving and controlling the pressing means, releasing the pressure when the roll paper is on standby, and pressing it when recording. An image forming apparatus comprising: