JPS6123050A - Paper feed device in copying machine, etc. - Google Patents

Abstract

PURPOSE:To prevent papers from being overlappedly fed, by providing an air nozzle for jetting an air jet including ions onto the paper feed side of a paper storing section in which papers to be fed are stacked, to loosen papers with the use of an air jet from the nozzle. CONSTITUTION:An air jet is jetted to one end face of papers 3 from an air nozzle 9 disposed on the paper feed side of a paper storing section 2. Further, the air nozzle 9 is connected at its base end side to the discharge side of a blower means 11, and an A.C. corona discharger 12 is disposed at the suction side of the blower means. The corona discharger 12 is applied with a high voltage from a power source 13 to carry out coronal discharge which generates an ion stream that is fed into the air nozzle 9. Further, papers 3 in the storing section 2 are absorbed to be made into press contact with a conveyor belt 6 by a vacuum absorbing means 7. Therefore, the papers are fed out by means of the conveyor belt 6 and is then conveyed by conveyor rollers 8. At this time, even if the papers are made in close contact with each other under electrostatic force, the electrostatic force is nulled by ions so that the papers may be loosened, thereby it is possible to prevent papers from being overlappedly fed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a paper feeding device for a photographic machine or the like that feeds paper while handling the paper with an air jet containing ions.

2. Description of the Related Art Conventional paper feeding devices for copying machines and the like have been known in which an air nozzle is provided on the paper feeding side, and the paper is fed while being handled by air jets ejected from the air nozzle. be.

Problems to be Solved by the Invention However, in the case of sheets that are charged with static electricity, the sheets are attracted to each other by the static electricity, so even when air jets are blown onto the sheets, the sheets are not separated, resulting in double feeding. Conventionally, this was dealt with by increasing the pressure of the air jet, but
This method required a high-pressure air source, which led to problems such as increased costs.

This invention was made for the purpose of improving the above-mentioned problems.

Means and Effects for Solving the Problems An air nozzle for ejecting an air jet containing ions is provided on the paper feed side of a paper storage unit that stores sheets to be fed in a piled state, and the air jet ejected by the air nozzle is provided. A paper feed device for copying machines, etc. that feeds paper.

Embodiment An embodiment of the present invention will be described in detail with reference to the drawings. In the drawing, 1 is a main body of a paper feeding device provided in a copier or the like (not shown), which has a paper storage section 2 with an inclined bottom surface. The paper 3 is stored in the paper accommodating section 2 in a stacked state. Note that 2a is a guide for aligning the edges of the paper 3.

A vacuum conveying means 4 is provided below the paper accommodating section 2 to feed out the sheets 3 stacked in the paper accommodating section 2 one by one from the bottom. The vacuum conveying means 4 includes a pair of rollers 51 which are spaced apart in the conveying direction, a conveying belt 6 wrapped around VIK, and a vacuum suction means 7 which sucks the paper 3 in the paper storage section 2 and presses it against the conveying belt 6. The paper 3 sucked by the vacuum suction means 7 and fed out by the conveyor belt 6
is conveyed by conveyance rollers 8.

On the other hand, reference numeral 9 denotes an air nozzle installed on the paper feeding side of the paper storage section 2, and is installed so as to eject an air jet toward the end surface of the paper 3. Further, the base end side of the air nozzle 9 is connected to the discharge side of the air blowing means 11 via a conduit 10. The blowing means 11 is, for example, a blowing fan, and an AC corona discharger 12 is provided on the suction side. A high-voltage power source 13 is applied to the AC corona discharger 12 to cause corona discharge, and the ion flow generated at this time is sent to the air nozzle 9 along with air by the blowing means 11.
Air is ejected from the air nozzle 9 toward the paper 3.

Note that the corona discharger 12 may be a corona discharger that charges a photoreceptor.

Effects of the Invention As described in detail above, this invention spreads the paper 3 by ejecting an air jet containing ions from the air nozzle 9 installed on the paper feed side of the paper storage section 2. Even if three comrades are attached to each other, the static air is removed by the ions, so that the sheets 3 can be handled reliably. This makes it possible to prevent the paper 30 from being fed in duplicate, and since there is no need to blow out high-pressure air, the blowing means 11 can also be made smaller, thereby reducing costs.

[Brief explanation of the drawing]

The drawing is a schematic diagram showing an embodiment of Jin's invention.

Claims (1)

[Claims] On the paper feed side of the paper storage section 2 that accommodates the paper 3 to be fed,
A paper feeding device such as a copying machine, which is provided with an air nozzle 9 that ejects an air jet containing ions toward the end surface of a paper 3.