JPS6031457A - Semi-automatic document feeder - Google Patents

Abstract

PURPOSE:To automatically conduct both-sided copying operation for a document by disposing an endless transport belt above a platen of a copying machine and an invert roll for feeding out a document which has been copied again onto the platen through the upper side portion of the transport belt. CONSTITUTION:A document 8 inserted in a document inlet 6 through a feed roll 9 from a document insertion tray 7 is led onto a platen 3 by a transport belt 5 and copied at a copy position by a copying machine 2. After completion of copying, the document 8 is transported to an invert roll 10 by the transport belt 5, and when the trailing end of the document reaches near the roll 10, the document 8 is carried in between the upper side portion 5a of the transport belt and a discharge tray 11 by reversion of the roll 10. When the document 8 gos round a roll 4 on the document inlet side, the document is turned over and carried again onto the platen 3, so that the second surface of the document is copied at a copy position. After both sides of the document are copied, the document is discharged through an outlet roll 13 into a discharge tray 11.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a semi-meticulous document feeder capable of automatically duplexing a document.

Prior Art When performing single-sided copying with a semi-automatic document feeder used in conventional copying machines, it is necessary for an operator to reverse the document, which has been copied on one side and is delivered to the output tray, and then reinsert it into the document insertion slot. However, it is troublesome to operate, and in the case of consecutive documents, the next document cannot be placed in the document insertion tray until both sides of the first document have been copied, resulting in poor work efficiency. Ta.

Purpose of the Invention The present invention was made with the aim of solving the above-mentioned problems.- It is an object of the present invention to provide a semi-automatic document feeder capable of automatically copying both sides of a document, thereby improving single-sheet printing performance. Chiru.

Structure of the Invention A conveyor belt truck is provided above the platen of a copying machine to carry a document set on a document insertion tray to a copying position on the platen, and to carry it out after copying. By providing an invert roll that feeds the original through the upper side of the conveyor belt to the top again and an ejection roll that ejects the original that has been copied on one side to the ejection tray, both sides of the original can be copied visually. Semi-automatic document feeder f&.

EXAMPLE Hereinafter, the implementation of this invention will be explained in detail with reference to the drawings. 110,000 endless conveyor belts 5 are placed between the rolled rolls 4. One of the rolls 4 is located on the side of the document insertion slot 6, and the conveyor belt 5 transfers the D document g on the document insertion tray 7 provided outside the document insertion slot 6 via the pinch roll 9 to the platen 3. It is designed to be pulled upwards. The conveyor belt 5 is provided so as to be in contact with the upper surface of the platen 3, and is configured to convey the original sg'f pulled in through the document insertion opening 6 along the upper surface of the platen 3 to a copying position.

The original 8 is carried into the copying position of the platen 3.

First, the first side (lower side) is copied by the copying machine 2, and the original fIB that has been copied is conveyed to the impeller roll 10 side by the conveyor belt 5. The invert roll 10 is installed substantially on the same plane as the upper side 5α of the conveyor belt 5, and is configured to convey the FjL document 8 whose first side has been copied in the direction of the arrow α within a range where the rear end does not pass through. It has become. When the rear end of the document 8 reaches the vicinity of the invert roll 10, the invert roll 10 sends out the document 8 in the direction indicated by the arrow, and the upper side 5α of the conveyor belt 5 and the output tray 11 installed above it. Carry it into the room. When the original 8 carried onto the upper side 5α of the conveyor belt 5 bypasses the roll 4 provided near the original insertion opening 6, its upper and lower surfaces are reversed, and the original is placed on the platen with the first side, which has already been copied, facing upward. 3. It is carried back to the top. When the document g on the platen 3 is stopped at the copying position, the copying machine 2
At the same time that the side of the original 8 is copied, the original 8 which has been copied is discharged four pages into the discharge tray II through the loop conveyance path I2 and the discharge roll 13.

Next, during the above operation, another document 8 set on the document insertion tray is sent by the pinch roll 9 between the shim platen 3 and the conveyor belt 5, and the above operation is repeated until it is placed on the document insertion tray 7. Both sides of the artificially set original 80 can be automatically copied.

Effects of the Invention As described in detail above, in this invention, both sides of the original 8 set on the original insertion tray 7 can be automatically reproduced by the copying machine 2. Complicated operations such as reversing 8 are not required. This further improves the operability of the semi-automatic 1-fil-1 feeder, and since the succeeding original 8 can be set in advance on the original insertion tray 7, work efficiency can also be improved.

[Brief explanation of the drawing]

The drawing is a schematic diagram showing an embodiment of the present invention. 2 is a copying machine, 3 is a platen, 5 is a conveyor belt, 5α is an upper side, 7 is a document insertion tray, and 8 is a document. 10 is an invert roll, and II is an output tray. +3 is an ejection roll. Applicant Fuji Xerox Co., Ltd. Agent Patent Attorney Masaaki Yonehara Patent Attorney Tadashi Hamamoto

Claims (1)

[Claims] A conveyor belt 5 is provided above the platen 3 of the copying machine 2, which transports the original 8 set on the original insertion tray 7 to the copying position of the platen 3, and transports the original in the opposite direction to the original insertion tray 7 after copying. On the unloading side of 8, there is a conveyor belt 5)
An invert roll 10 transports the discharged original 8 onto the platen 3 again via the upper side 5α of the transport belt 5, and an output tray 11 which transports the original g whose both sides have been copied is placed above the transport belt 5. A semi-automatic document feeder provided with a discharge roll 13 for discharge.