JPH09109517A - Recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make operation for arranging paper properly so that a surface not to be used comes to be in the same direction unnecessary by a method wherein whether or not image information is preliminarily recorded on a paper surface to be recorded is detected, and a recording means is made to carry out recording operation only when a control means receives a detected result being non-record. SOLUTION: When recording of one page is going to be started, a control means 4 at first controls a paper feed means 2, and feeds cut plain paper 5 to a detection part of a detection means for presence of recording 1. Then, when a detected result of the detection means for presence of recording 1 is judged not to be used, a required image data is recorded on the cut plain paper 5. After end of recording, paper is discharged and recording of one page is ended. Besides, when the recording surface is judged to be used, recording operation by the recording means 3 is forbidden, and the image data to be recorded is temporarily held. The cut plain paper 5 is discharged without being recorded. Then, the control means 4 controls again the paper feed means 2, and feeds next cut plain paper 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus, and more particularly to a recording apparatus which reuses cut plain paper whose one side is already used.

[0002]

2. Description of the Related Art Conventionally, as a recording apparatus for recording received image information on a sheet, such as a facsimile machine, there is known a recording apparatus which effectively uses a used sheet as a recording sheet ( For example, Japanese Patent Laid-Open No. 5-338850
No.). In this recording device, when copying, select a specific paper supply section that stores used paper and print,
When receiving, by preferentially printing by selecting a paper supply unit other than the specific paper supply unit selected at the time of copying,
Effective reuse of used paper.

[0003]

However, in the above-mentioned conventional recording apparatus, when the back side of the plain paper whose one side has been used is reused, it may be overwritten on the already used side. The reason is that when using plain paper that has been used on one side, it is necessary to arrange the plain paper in advance so that the unused side of the plain paper is in the same direction. This is because it is difficult to carry out completely with.

[0004] The present invention has been made in view of the above points,
An object of the present invention is to provide a recording apparatus capable of preventing the recording data from being lost due to the recording data being overwritten on the used surface when a set of cut plain paper or the like is illegal.

[0005]

In order to achieve the above object, the present invention achieves the above object by feeding a sheet, recording means for recording image information on the sheet, and a sheet to be recorded before recording by the recording means. A recording presence / absence detecting means for detecting whether or not image information is already recorded on the surface, and an image information to be recorded by the recording means when the recording presence / absence detecting means detects that there is no recording on the paper surface. Then, the recording medium is ejected by the paper feeding means, and when the recording presence / absence detecting means detects that there is recording on the surface of the recording medium, the recording operation by the recording means is prohibited, and the paper feeding means And a control means for ejecting the paper detected as being recorded by the.

According to the present invention, whether or not the image information is already recorded on the surface of the recording paper, such as a cut plain paper, which is fed by the paper feeding means and the image information is recorded by the recording means, is checked. Since the control means causes the recording operation to be performed by the recording means only when the control means receives the detection result that the image information is unrecorded by the recording presence / absence detection means, the recording surface is automatically confirmed. Then, the desired image information can be recorded only on the unused recording surface of the recording surface.

Further, according to the present invention, when the control means receives the detection result from the recording presence / absence detection means that the surface of the sheet to be recorded is recorded, the recording means holds the image information to be recorded, and the recording is performed. The paper that has been detected as being ejected by the paper feeding means is repeatedly discharged until the paper on which the image information is not recorded on the paper surface to be recorded by the paper feeding means is fed, and there is no recording on the paper surface. The image information held by the recording means is recorded on the sheet detected as ".

According to the present invention, when the control means receives the detection result from the recording presence / absence detection means that there is recording on the surface of the sheet to be recorded, the recording means holds the image information to be recorded, and then first. Since the held image information is recorded on the paper fed to the recording surface on which the image information is not recorded, desired image information to be recorded can be recorded without disappearing.

[0009]

Next, an embodiment of the present invention will be described. FIG. 1 shows a block diagram of an embodiment of a recording apparatus according to the present invention. As shown in the figure, this recording apparatus is provided with recording presence / absence detecting means 1, paper feeding means 2, recording means 3
And a control means 4.

Next, the operation of the embodiment of FIG. 1 will be described with reference to the flowchart of FIG. The cut plain paper 5 flows from right to left in FIG. 1, and the recording surface is on the upper side. When attempting to start recording one page, the control means 4 first controls the paper feeding means 2 to cut the plain paper 5
Is fed to the detecting section of the recording presence / absence detecting means 1 (step 11).

The recording presence / absence detecting means 1 uses the recording surface (upper side in FIG. 1) of the cut plain paper 5 as a charge transfer device (CCD) or CIS.
The photoelectric conversion element such as is used to convert the black-and-white information (image information) on the recording surface of the cut plain paper 5 into an electric signal to detect whether the recording surface has been used (step 12). Next, when the control means 4 determines that the detection result of the recording presence / absence detection means 1 indicates that the recording surface is unused, the control means 4 controls the paper feeding means 2 and the recording means 3 respectively to record on the cut plain paper 6. Image data (image information) of the
3) After the recording, the paper feeding means 2 is controlled to discharge the paper (step 14), and the recording of one page is completed (step 1).
5).

On the other hand, the control means 4 judges that the recording surface has been used when the detection result of the recording presence / absence detection means 1 indicates that black-and-white information exists in step 12, and the recording operation by the recording means 3 is performed. Is prohibited, the image data to be recorded is temporarily held, and the paper feeding means 2 is controlled to discharge the cut plain paper 5 without recording (step 1).
6).

Further, the control means 4 again controls the paper feeding means 2 to feed the next cut plain paper 5 (step 1
7) Pass the detection section of the recording presence / absence detecting means 1 and determine again whether or not the recording surface is unused from the electric signal inputted from the recording presence / absence detecting means 1 (step 12).

At this time, if it is detected again that the cut plain paper 5 has been used, the processes of steps 16 and 17 are performed. After that, when the cut plain paper 5 whose recording surface is unused is paused first, the control means 4 causes the recording means 3 to record the desired image data held until then (step 13). Then, the paper is fed by the paper feeding means 2 (step 14). Hereinafter, the same operation as above is repeated.

[0015]

As described above, according to the present invention,
The recording presence / absence detecting unit detects whether or not the image information is already recorded on the recording surface of the cut plain paper or the like, which is fed by the paper feeding unit and the image information is recorded by the recording unit. Then, only when the control means receives the detection result that the image information is unrecorded, the control means causes the recording means to perform the recording operation, so that the recording surface is automatically confirmed and the recording to be recorded is performed. Since the desired image information is recorded only on the paper whose surface is unused, even if the used paper on one side that has not been set correctly or the paper used on both sides is mixed and set in the recording device,
Desired image information can be recorded on a sheet whose recording surface is unused, and it is possible to eliminate the conventional work of organizing the sheet so that the unused surface is in the same direction.

Further, according to the present invention, when the control means receives the detection result from the recording presence / absence detection means that there is recording on the sheet surface to be recorded, the recording means holds the image information to be recorded, By recording the held image information on the sheet that is first fed and has no image information recorded on the recording surface, it is possible to prevent the desired image information to be recorded from being erased by overwriting.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of FIG. 1;

[Explanation of symbols]

 1 Recording Presence Detection Means 2 Paper Feeding Means 3 Recording Means 4 Control Means

Claims (2)

[Claims] 1. A paper feeding means for feeding a paper, a recording means for recording image information on the paper, and a detection as to whether or not the image information is already recorded on the surface of the paper to be recorded before the recording by the recording means. The recording presence / absence detecting unit, and after recording the image information to be recorded by the recording unit when the recording presence / absence detecting unit detects that there is no recording on the surface of the sheet, the sheet feeding unit records the image information. When the paper is ejected, and the presence or absence of recording is detected by the recording presence / absence detecting means, the recording operation by the recording means is prohibited, and the presence of recording is detected by the paper feeding means. A recording apparatus comprising: a control unit configured to discharge the sheet. 2. When the control means receives a detection result from the recording presence / absence detection means that there is recording on a sheet surface to be recorded, the control means causes the recording means to hold image information to be recorded, and indicates that recording is performed. Discharging the detected paper by the paper feeding means is repeated until the paper whose image information is not recorded on the paper surface to be recorded by the paper feeding means is fed thereafter. 2. The recording apparatus according to claim 1, wherein the image information held by the recording unit is recorded on the sheet detected as no recording.