JPS62269841A - Image recording device - Google Patents

Abstract

PURPOSE:To control the paper feeding speed always constant even if the diameter of a feeding roller or a taking-up roller varies, by directly detecting the paper feeding speed of an image recording device which uses a recording paper in roll form and controlling a motor for feeding paper by the above-described detection signal. CONSTITUTION:When a motor 14 for supply, motor 15 for driving roller and a taking-up motor 16 are operated, these motors 14, 15, and 16 revolve in the direction of arrow A, and a recording paper 2 is driven out from the recording paper roll 1 of a recording paper feeding means 3, and travels in the direction of arrow B, and is taken up onto the taking-up roller 6 of a recording paper taking-up means 7. During the continuation of the recording operation, the diameter of the feeding roller 1 reduces, and the diameter of the taking-up roller 6 increases. The tension applied onto the recording paper in traveling is varied by the variation of the diameter of the roller, and the paper feeding speed varies. Since the paper feeding speed is always monitored by a speed detecting means 18, the variation of the paper feeding speed is detected by a speed detecting means 18, and the paper feeding speed can be kept constant by the feeding motor 14.

Description

DETAILED DESCRIPTION OF THE INVENTION 3. Detailed Description of the Invention Field of Industrial Application The invention relates to an artist recording device of the type that uses a roll of recording paper.

2. Description of the Related Art Conventionally, in an electrostatic 1IIli image recording station using a roll of electrostatic recording paper, a recording paper 2 is fed out from a supply roll 1 made of a roll of recording paper, as shown in FIG. A recording paper supply means 3, a drive roller 4 and a pinch roller 5 for transporting the recording paper 2, a recording paper winding means 7 for winding up the recording paper 2 after recording to form a winding roll 6, and a recording paper winding means 7 for winding up the recording paper 2 after recording to form a winding roll 6; It has a guide roller 8.9 disposed on the conveyance path, an electrostatic recording gutter 10 and a presser roller 11, a developer 12, and a squeeze nozzle 13, and the recording paper supply means 3 includes a supply motor. 14 is 1. The driving roller 4 is provided with a lower roller motor 15, and the recording paper winding means 7 is provided with a winding motor 16.

Next, the recording operation in the electrostatic recording apparatus will be explained.

When the supply motor 14, the roller motor 15, and the take-up motor 16 are turned on, each motor 14, 15, and 16 rotates in the direction of arrow A in the figure, so that the recording paper 2 is transferred from the recording paper supply means to the winding motor 16. The recording paper is unwound from the recording paper roll 1 and wound onto the winding roll 6 of the recording paper winding means 7 in the direction of arrow B.

During this running of the recording paper, a replacement image is formed by the magnetostatic recording head 10 on the recording paper 27rC'r, and then a replacement image is formed by the squeeze nozzle 13 (Wh(1
1 surface is dried. Here, the drive roller motor 15 connected to the drive roller 4 acts to convey the recording paper 2 at a predetermined speed, and the supply motor 14 applies bank tension to stabilize the recording paper running and winds the recording paper 2. The take-up motor acts to perform the take-up. As the drive roller motor 15, a pulse motor is usually used so that the speed can be accurately controlled, and as the supply motor 14 and the take-up motor 16, even if the rotation speed varies depending on the roll diameter, there is no problem. As such, torque motors are usually used.

Problems to be Solved by the Invention However, according to such a configuration, even if the rotational speed iQ of the drive roller motor is set constant, torque fluctuations in both the supply roll diameter and the take-up roll diameter due to changes in the diameters of the take-up roll and However, there was a problem in that the feeding speed of the paper changed, making it impossible to obtain an accurate double 1' image.

The above problem arises for the following reasons. That is, the recording paper 2 is...
, 8 is conveyed between the proboscis roller 4 and the pinch roller 5, and is regulated by the speed of the drive roller 4. Strictly speaking, there is slippage between the drive roller and the recording paper, and this amount of slippage is the speed of the drive roller. It is affected by the amount of tension before and after the roller. The back tension transmitted to the recording paper 2 differs depending on whether there is a lot of paper on the supply roll or when there is little paper left. The same is true for the take-up roll, and the slippage between the drive roller and the recording paper differs slightly depending on the relationship between the forces between the two, and the paper feeding speed also differs slightly.

For example, if the pulling torque on the take-up roll side is thicker than the bank tensile strength on the supply roll side, the paper feed speed will be faster, and if the opposite is true, the paper feed speed will be slower.

As a solution to this problem, it may be possible to use a motor that generates a constant tension regardless of changes in the diameters of the supply roll or take-up roll, but it is difficult to obtain a motor with such characteristics. In addition, 1. It is possible to prevent slippage between the drive roller and the pinch roller by changing the material and mounting position of the recording paper, but since paper is conveyed by friction between the drive roller, pinch roller, and recording paper, This slippage cannot be eliminated.

The present invention has been made in view of the above-mentioned problems, and is an image recording apparatus equipped with a paper transport side tilting mechanism that can always achieve a constant paper feeding speed without fluctuations in the tension of the recording paper. The purpose is to provide

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a speed detection means for detecting the traveling speed of the recording paper in the paper feeding system from the supply roll to the take-up roll. The Hg effect motor of any one of the recording paper supply means, the drive roller, and the recording paper winding means is controlled according to a signal from the recording paper supply means.

According to the above-described structure, the speed sensing means immediately detects a change in the paper feeding speed, and adjusts the recording paper supply means, driving roller, and recording paper winding means according to the speed fluctuation. By controlling the drive motor, either
It becomes possible to always convey the recording paper at a predetermined speed.

EXAMPLE Hereinafter, an embodiment 1 of the present invention shown in FIGS. 1 and 2 will be explained. FIGS. 1 and 2 show an electrostatic charge 1 according to an embodiment of the present invention.
1 is a perspective view and a side view schematically showing an image recording device. FIG. In FIGS. 1 and 2, parts that are the same as those in the conventional device shown in FIG. 3 are designated by the same reference numerals. The electrostatic pre-image removal device of this embodiment also includes a recording paper supply means 3 for feeding out a recording paper 2 from a supply roll 1 made of a roll-shaped recording paper, a drive roller 4 for conveying the recording paper 2, and a pinch roller. A roller 5, a recording paper winding means 7 that winds up the recording paper 2 after recording to form a take-up roll 6, guide rollers 8 and 9 disposed on the conveyance path of the recording paper 2, and a static recording head. ]0 and presser roller 1], a developing device ]-2, and a squeeze nozzle 13.
Second, the recording paper winding means 7 is provided with a winding motor 16.

Here, one torque motor is used as the supply motor 14 and the winding motor 16, and one and a driving motor 15 are used.
For this purpose, a pulse motor is used. Furthermore, a speed detection means 18 is provided on the outer periphery of the supply roll 1 to detect the speed of the recording paper. This speed detecting means 18 reads a freely rotating roller 19 which is pressed against the outer periphery of the supply roll 1 and rotates, a rotating disk 20 connected to the freely rotating roller 19 and which has a fixed pattern, and reads the rotational speed. and a cell 21 for detecting. sensor 21
The output signal is input to the supply motor controller 22. The supply motor controller 22 sends a signal to the supply motor 14 to change the output torque in response to a signal from the sensor 21.

Next, the recording operation in the electrostatic image recording apparatus will be explained. When the supply motor 14, drive roller motor 15, and take-up motor 16 are turned on, each motor 14.15.1
6 rotates in the direction indicated by the arrow in the figure, and therefore the recording paper 2 is fed out from the recording paper roll J of the recording paper supply means 3, and the recording paper 2 is fed out in the direction indicated by the arrow B.
The recording paper travels in the direction and is wound onto the winding roll 6 of the recording paper winding means 7. During this running of the recording paper, a latent image to become an image is formed on the recording paper 2 by the electrostatic recording head 10, then converted into a visible image by the developing device 12, and then converted into a visible image by the squeeze nozzle 13. The surface of the elephant is dried.

Here, the drive roller motor 15 connected to the drive roller 4 acts to convey the recording paper 2 at a predetermined speed.
The supply motor 14 provides puncturing and punching to stabilize the running of the recording paper, and the take-up motor functions to wind up the recording paper. As the recording operation continues, the diameter of the supply roll 1 decreases and the diameter of the take-up roll 6 increases. Due to this change in roll diameter, the tension/contact applied to the running recording paper 2 may change, and the paper feeding speed may change. Since the paper feed speed is always detected by the speed detection means 18, when the paper feed speed changes, the change is immediately detected by the speed detection means 18, and the signal is sent to the supply motor controller 22, which controls the supply phase motor. The controller 22 changes the tension applied to the recording paper 2 by the supply motor 14 to keep the paper feeding speed constant.

In the above embodiment, the speed detection means 18 was placed at the supply roll 1;
It may be anywhere in the paper feeding system from the to the take-up roll 6. In the above embodiment, the supply motor 14 is controlled by the signal from the speed production means 18 to control the recording paper ten/run between the supply roll 1 and the drive roller 4, but instead of this, the winding field is The motor 16 may be controlled to set the recording paper tension between the drive roller 4 and the take-up roll 6 sideways, or the rotational speed of the pivot roller motor 15 may be directly adjusted to i'l111@. All or any two of the drive motor 14, drive roller motor 15, and take-up motor 16 may be controlled.

In the above implementation example, the present invention was applied to an electrostatic one-page, one-image @ device using electrostatic recording paper, but the present invention is not limited to this, and the present invention is not limited to this. It goes without saying that I would like to transfer 1 yen to any Gaszuka recording device that uses .

Effects of the Invention As is clear from the above explanation, the present invention directly detects the speed of paper feed and uses the signal to control the motor related to paper feed, thereby controlling the supply roll and the like. This has the effect that even if the diameter of the take-up roll changes, the paper feeding speed can always be controlled to be constant, and accurate image recording can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of an electrostatic image recording apparatus according to an embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a schematic perspective view of a conventional electrostatic image recording apparatus. DESCRIPTION OF SYMBOLS 1... Supply roller paper 2... Recording paper, 3... Recording paper supply means, 4... Drive roller, 5... Pinch roller, 6... Winding roll, 7... Recording paper winding means, DESCRIPTION OF SYMBOLS 10. Electrostatic recording head, 14. Supply motor, 15. Zip roller first motor, 16. Winding motor, 18. Speed detection means, 22. Supply motor controller.

Claims (1)

[Claims] A recording paper supply means for feeding out recording paper from a supply roll formed by winding the recording paper into a roll, a drive roller for conveying the recording paper, a recording paper winding means for winding the recording paper into a roll, and a recording paper winding means for winding the recording paper into a roll. speed detection means for detecting traveling speed;
In response to the signal from the speed detection means, the recording paper supply means;
An image recording apparatus having a control means for controlling a drive motor of either a drive roller or a recording paper winding means, and a recording means for recording on a running recording paper.