JPH0680274A - Paper replenishing method in paper feeding device of copying machine - Google Patents

Abstract

PURPOSE:To reduce the operating labor of an operator when papers are replenished by pulling out a paper sheet tray for a copying machine main body automatically when no paper sheets are stocked in the paper sheet tray. CONSTITUTION:Plural paper sheet trays 11 provided at the lower side of a copying machine 13 are engaged slidable to a rail provided to a copying machine main body 14, and operated to input and output by a tray motor. When the paper sheets 9 in the paper sheet tray 11 are fed in order to the copying machine, and no paper sheet is in the tray 11, a paper sheet sensor 12 provided at the lower side of the paper sheet tray 11 detects that, and the paper sheet tray is pulled out automatically to the front side of the copying machine main body 14. As a result, an operator is not necessary to check that there is no paper sheet in the copying operation every time by observing the display of an operation panel 22, and also not necessary to pull out the paper sheet tray 11 from the copying machine main body 14, so as to reduce his operating labor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper replenishing method in a paper feeding device of a copying machine which uses a paper tray which can be moved in and out of a copying machine body by power.

[0002]

2. Description of the Related Art In the conventional paper feeder of the above copying machine, when the paper in the paper tray is exhausted, the detector detects this and the copy operation is stopped and the display provided on the operation panel is also used. Only a warning message to that effect was displayed on the surface.

[0003]

Therefore, when the copying operation is stopped due to running out of paper during copying, the operator first reads the display surface on the operation panel and checks it, and then (1) paper tray Manually or in the case of an auto tray, turn on a specified switch and pull out by motor drive. (2) Replenish the paper in the paper tray.
(3) The operation of manually inserting the paper tray or inserting it into the main body by the motor must be performed, and there is a problem that the number of operations of the operator during this paper replenishment is large. It was troublesome to check the display surface and pull out the paper tray.

The present invention has been made in view of the above, and when the paper in the paper tray runs out during copying, the paper tray is automatically pulled out from the copying machine main body to prompt the supply of paper. Paper in the paper feeding device of the copying machine, which makes it possible to omit the check of the display panel and the operation of pulling out the paper tray when the paper is exhausted, and to reduce the operation labor of the operator at the time of paper supply. It is intended to provide a supply method.

[0005]

In order to achieve the above object, the method of the present invention uses a paper feeding device of a copying machine in which a paper tray 11 is moved in and out of a copying machine main body 14 by power. When the paper sensor 12 detects that the paper in the inside paper tray 11 has become zero, the power device for taking in and out the paper tray 11 is driven and the paper tray 11 is automatically pulled out from the copying machine main body 14. I am trying.

[0006]

[Operation] When the paper in the paper tray 11 during copying becomes zero, this paper tray 11 is automatically pulled out, and the operator can know the paper zero without checking when the paper is zero. Paper tray 1
There is no need to perform the operation for pulling out 1.

[0007]

EXAMPLES Examples of the present invention will be described with reference to the drawings. FIG. 1 schematically shows a copying mechanism of an electrostatic copying machine. In FIG. 1, reference numeral 1 is a photosensitive drum, and 2 is an optical system for forming an electrostatic latent image on the photosensitive drum 1. A developing device 3, a paper feeding device 4, a transfer charging device 5, a peeling charging device 6, a cleaning device 7, and a charging device 8 are provided around the photosensitive drum 1 in the direction of rotation from the exposure portion of the optical system 2. The electrostatic latent images formed in the exposing section are developed into a toner image by the developing device 3, and are then supplied by the transfer charger 5 in synchronization with the rotation speed of the photosensitive drum 1. The toner image is transferred onto the sheet 9 supplied from the sheet device 4 along the sheet feeding path 4a. The sheet on which the toner image is transferred is peeled off from the photosensitive drum 1 by the peeling charger 6 and sent to the fixing device 10.

Below the paper tray 11 of the paper feeding device 4, a paper sensor 12 for detecting the presence or absence of the paper 9 in the paper tray 11 is provided, whereby the paper in the paper tray 11 becomes zero. Is detected and input to a controller (not shown).

FIG. 2 shows a copying machine to which the present invention is applied. Below the copying machine 13, the paper tray 1 is provided.
A plurality of copying machines 1 are provided on the front side of the copying machine body 14 so that they can be taken in and out. Each of the paper trays 11 is slidably engaged with a rail (not shown) provided in the main body 14 of the copying machine, and can be moved in and out by a tray motor 15 as in the drive device shown in FIG. It has become.

That is, a rack 16 is fixed to the paper tray 11 in the moving direction thereof, and a pinion 17 supported on the copying machine main body 14 side is meshed with the rack 16. A drive gear 20 fixed to the output shaft of the tray motor 15 is meshed with the pinion 17 via intermediate gears 19a and 19b fixed to the rotary shaft of the clutch 18. Reference numeral 21 is an encoder, and this encoder 21
The sensor 21a detects the rotation of the tray motor 15, that is, the operation of the paper tray 11.

The copy operation is performed by turning on the copy button 23 on the operation panel 22 of the copying machine 13, and the sheets 9 are sequentially supplied to the copying mechanism in the predetermined tray 11 and, as a result, this sheet tray is supplied. Paper 9 in 11
When it becomes zero, this is detected by the paper sensor 12 and the paper tray 11 is automatically pulled out to the front side of the copying machine main body 14.

The above operation will be described with reference to the flowchart shown in FIG. First, the copy button 23 is turned on to start copying (step 1), and when the paper 9 in the paper tray 11 becomes zero during the copying, the paper sensor 1
Zero paper is detected at 2 (step 2). When the paper zero is detected, the copying machine is stopped (step 3), and then the tray motor 15 is turned on to automatically pull out the paper tray 11 with the paper zero (step 4). In this state, the operator supplies paper 9 to the paper tray 11 (step 5). When the paper 9 is replenished in the paper tray 11, this is detected by the paper sensor 12 (step 6). In this state, turn on the set button 24 on the operation panel 22.
Then, the paper tray 11 is automatically pulled in by the reverse rotation of the tray motor 15 (step 7). Next, copying is restarted and all copying is completed (step 8).

FIG. 5 is a system block diagram for performing the above operation. In the figure, 25 is an operation panel section, 26 is a developing control section, 27 is a paper-related control section, 28 is a fixing control section, and 2 is a fixing control section.
Reference numeral 9 denotes an optical system control unit, and 30 denotes another control unit, which are connected to a main controller 32 having a CPU 31 having a built-in ROM and RAM via a connection port 33 by a bus line 34.

The operation panel section 25 controls operability display and key input. The developing controller 26 controls copy density and other controls. In the paper-related control unit 27, the paper sensor 12 detects the presence / absence of paper, the drive control of the tray motor 15, the paper size detection by the paper size sensor, and other controls. The fixing controller 28 controls the temperature of the fixing device 10 and other controls. The optical system control unit 29 performs optical system control, lens motor drive control, exposure lamp light amount control, and other controls. The other control unit 30 controls the drive of the main motor and the like.

[0015]

According to the present invention, when the number of sheets in the sheet tray 11 during copying becomes zero, the sheet tray is automatically pulled out from the copying machine main body 14 so that the operator can move the inside of the sheet tray during copying. When the number of sheets of paper becomes zero, it is possible to know that it is necessary to replenish the sheets without checking the display section of the operation panel 22 one by one, and an operation for pulling out the sheet tray 11 from the copying machine main body 14 Also, it is not necessary to perform the above, and it is possible to reduce the operation labor of the operator at the time of paper supply.

[Brief description of drawings]

FIG. 1 is a configuration explanatory view schematically showing a copying mechanism of an electrostatic copying machine.

FIG. 2 is a perspective view showing an electrostatic copying machine to which the method of the present invention is applied.

FIG. 3 is a schematic configuration explanatory view showing a paper tray loading / unloading mechanism.

FIG. 4 is a flowchart showing the method of the present invention.

FIG. 5 is a system block diagram for implementing the method of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Photosensitive drum, 2 ... Exposure part, 3 ... Developing device, 4 ... Paper feeding device, 5, 6, 8 ... Charging device, 9 ... Paper, 11 ... Paper tray, 12 ... Paper sensor, 13 ... Copier, 14 ... Copier body, 15 ... Tray motor, 22 ... Operation panel, 23 ... Copy button, 24 ... Set button.

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[Procedure amendment]

[Submission date] March 18, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

[0015]

According to the present invention, when the number of sheets in the sheet tray 11 during copying becomes zero, the sheet tray is automatically pulled out from the copying machine main body 14 so that the operator can move the inside of the sheet tray during copying. When the number of sheets of paper becomes zero, it is possible to know that it is necessary to replenish the sheets without checking the display section of the operation panel 22 one by one, and an operation for pulling out the sheet tray 11 from the copying machine main body 14 is performed. Also, it is not necessary to perform the above, and it is possible to reduce the operation labor of the operator at the time of paper supply.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a configuration explanatory view schematically showing a copying mechanism of an electrostatic copying machine.

FIG. 2 is a perspective view showing an electrostatic copying machine to which the method of the present invention is applied.

FIG. 3 is a schematic configuration explanatory view showing a paper tray loading / unloading mechanism.

FIG. 4 is a flowchart showing the method of the present invention.

FIG. 5 is a system block diagram for implementing the method of the present invention.

[Explanation of Codes] 1 ... Photosensitive drum, 2 ... Exposure unit, 3 ... Developing device, 4 ... Paper feeding device, 5, 6, 8 ... Charger, 9 ... Paper, 11 ... Paper tray, 12 ... Paper sensor, 13 Copier, 14 ... Copier body, 15 ... Tray motor, 22 ... Operation panel, 23 ... Copy button, 24 ... Set button.

Claims (1)

[Claims] 1. A paper tray 11 for a copying machine main body 14
In a paper feeding device of a copying machine in which paper is put in and taken out by power, when the paper sensor 12 detects that the number of papers in the paper tray 11 being copied becomes zero, the power for taking in and out the paper tray 11 is set. A paper replenishing method in a paper feeding device of a copying machine, characterized in that the apparatus is driven to automatically pull out the paper tray 11 from the copying machine main body 14.