JPH0915911A - Copying machine - Google Patents

Abstract

PURPOSE: To prevent a careless mistake, that is, one-side copying caused by forgetting to specify both-side copying by actuating a reverse lever, so as to feed an original to a carrying belt for rear copying, when a both-side copying button is depressed. CONSTITUTION: An optical scanner 4 scans the rear of the original and detects the fact that a character and a pattern exist or not, to inform a first control part 8. In a copying part 6, the front side of the original is copied at a position 13 and then, the first control part, 8 stops the ejecting of the original and lights a rear-side lamp for warning that the rear side is copied or not in a display part 9, when the rear is expected to copy and the one-side copying is specified, from the results of the detection. When the both-side copying button 12 is depressed, a second control part, 10 lays the lever 7 fallen to a both-side copying side and carries the original at the position 13 to a position 15 and then, to a position 16 by a paper carrying roller 3, so that the original is turned over by the paper carrying roller 3 and returned to the copying part 6 at the position 13, to copy the rear.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine, and more particularly to a copying machine which prevents forgetting to specify double-sided copying.

[0002]

2. Description of the Related Art In a conventional copying machine capable of double-sided copying, whether or not to perform double-sided copying must be designated in advance when a copying operation is started. If you forget to specify double-sided copying for the original paper that should be double-sided, only single-sided copying can be done, resulting in careless mistakes that waste paper.

[0003]

In the conventional copying machine, since the operator must specify double-sided copying before starting the copying operation, even if the original is to be double-sided copied, the specification must be neglected. Cannot copy on both sides.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to prevent one-sided copying of an original sheet to be copied on both sides by an inadvertent mistake.

Therefore, in a copying machine according to the present invention, which can sequentially convey the original sheets one by one and copy the front side and the back side of the original sheets, it is provided in the middle of the path for conveying the original sheets to the copying section by the sheet conveying rollers. An optical scanner that detects whether there is a stroke on the back side of the manuscript paper, a button that specifies single-sided copying that copies only the front side of the manuscript paper, and a button that specifies double-sided copying that copies the front and back sides of the manuscript paper. When the optical scanner detects a stroke on the back side of the original paper and specifies single-sided copying, or when the optical scanner does not detect a stroke on the back side of the original paper and specifies double-sided copying, When the copying of the front side is completed, the conveyance of the original sheet is stopped at the copying section, and the first control section for displaying a warning on the warning display section whether or not the back side is to be copied, and when the button for single-sided copying is pressed, A sheet is ejected from the copying section to an external original sheet stack by a sheet conveying belt, and when a double-sided copying button is pressed, the reversing lever is operated to send the original sheet to the rear side conveying belt from the copying section. And a control unit of.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

Referring to FIG. 1 showing an embodiment of the present invention, in a copying machine 1, original sheets placed on an original sheet stack 2 are sequentially conveyed to a copying section 6 by a sheet conveying roller 3. The optical scanner 4 provided in the middle of the path where the original paper is conveyed scans the back surface of the original paper,
The first control unit 7 is notified by detecting whether there is a stroke. In the copying section 6, after the front side of the document sheet is copied at the position 13, the first control section 8 stops the delivery of the document sheet when the back side is copied according to the detection result and single-sided copy is designated. The back lamp 21 is turned on to warn the display unit 9 whether or not to copy the back surface. Referring to FIG. 2 exemplifying the display of the display unit 9, the back lamp 21 is turned on to warn whether or not back copying is to be performed. Second control unit 1
0 is the lever 7 when the "duplex copy" button 12 is pressed.
The document paper at position 13 to the position 15
After being conveyed to the position 16, the sheet is conveyed to the position 16 by the sheet conveying roller 3, the sheet is reversed by the sheet conveying roller 3 and returns to the copying section 6 at the position 13 to copy the back side. When the optical scan result on the back side determines that there is no stroke on the back side,
The manuscript paper is copied at the position 13 of the copying unit 6 so that the surface is secondly copied.
Since the control section of (1) sets the lever to the one-sided copy side, the document sheet is carried out to the position 14 and discharged to the document sheet stack.

When a character is detected on the back side of the original sheet and the back side lamp 23 is turned on, when the one-sided copy button 11 is selected and designated, only the front side can be copied. Also, if no stroke is detected on the back side and the double-sided copy button 12 is specified,
Both sides can be copied.

[0009]

As described above, according to the present invention, the copying machine can prevent an inadvertent mistake in making a single-sided copy by forgetting to specify a double-sided copy of a document to be double-sided.

[Brief description of the drawings]

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

FIG. 2 is a diagram illustrating a display and buttons of a display unit in FIG.

[Explanation of symbols]

 1 Copier 2 Original Paper Stack 3 Paper Conveying Roller 4 Optical Scanner 5 Paper Conveying Belt 6 Copying Section 7 Lever 8 First Control Section 9 Display Section 10 Second Control Section 11 Single-sided Copy Button 12 Double-sided Copy Button 21 Backside Lamp

Claims (1)

[Claims] 1. In a copying machine capable of sequentially conveying original sheets one by one and copying the front side and the back side of the original sheets, the original sheets provided in the middle of a path for conveying the original sheets to a copying section by a sheet conveying roller. An optical scanner that detects whether there is a stroke on the back side of the document, a button that specifies single-sided copying that copies only the front side of the original paper, and a button that specifies double-sided copying that copies the front and back sides of the original paper. When the optical scanner detects a stroke on the back side of the original paper and specifies single-sided copying, or when the optical scanner does not detect a stroke on the back side of the original paper and specifies double-sided copying, the At the end of copying, the conveyance of the original paper is stopped at the copying unit, and the first control unit that displays a warning on the warning display unit whether or not to copy the back side, and when the single-sided copy button is pressed, the original paper is copied. Department A second control unit that discharges the original paper from the copying unit to the outside original paper stack with the paper conveyance belt, and when the double-sided copy button is pressed, the reversing lever is operated to send the original paper to the conveyance belt for the back side copying. A copying machine comprising: