JPS5911270A - Paper suction and conveying apparatus - Google Patents

Abstract

PURPOSE:To enable passage of a continuously folded paper to a printing section without trouble due to a creasing by arranging stepped rollers, a flat belt put thereon and a paper suction means in the conveying path of a printing paper. CONSTITUTION:A plurality of stepped rollers 20 and 21 are arranged in a conveying path to a paper storage section 11 from a supply section 12 of a continuously folded paper 5 via a printing section. A flat belt 24 is put on the stepped rollers 20 and 21 and a guide roller and the peripheral speed of the flat belt 24 is set higher than the conveying speed of the paper 5 to be conveyed with a tractor 8 while a means 23 of sucking the paper is provided at the bottom of the flat belt 24.

Description

[Detailed description of the invention] (A) Technical field of the invention The present invention relates to a paper suction conveyance device suitable for use in paper machines.

(B) Background of the Technology In recent years, as the speed of multiplex computers has increased, output devices such as line printer devices have been intensively researched and developed in order to increase their speed and improve their operability.

(c) Conventional technology and problems FIG. 1 is a diagram for explaining a conventional paper feeding device.

In the figure, first, a latent image is formed on the photosensitive drum 1 by the m-image forming means 2. Next, the developing means 3 supplies developer powder to make the entire latent image formed on the photosensitive drum 1 visible. Next, the transfer means 4) transfers the visible image on the photosensitive drum 1 onto the paper 5. After the transfer, the developer powder remaining on the photosensitive drum is removed by a cleaning brush 6.

On the other hand, the paper 5 is sequentially pulled out from the hopper 12, passes over a paper guide 13 and a paper presser 14, and is conveyed to the transfer means 4 via the tractor 7 and paper guides i6 and 18i.

At this time, the transport speed of the paper 5 is set in advance to be the same speed as the surface speed of the photosensitive drum 1. Transfer means 4
The visible image formed on the photosensitive drum 1 is transferred onto the paper 5.

Next, paper guide 1.7.19, tractor 8,
After being sent to the heating fixing device 9 and being heated and fixed, it is sent to the folding machine 1.
1 and folded.

Printing and conveyance of paper are performed by performing all the steps as explained above.

However, before performing such printing, the paper 5 must be loaded into the paper transport path from the hopper 12 to the folding machine 11 via the transfer means 4.

The loading of the paper 5 into the monthly paper transport path will be explained. Note that the paper presser stand 14 is rotatably provided on the shaft 15, and is pressed against the paper conveying surface of the tractor 7 by a spring or the like (not shown).

The paper holding table 14 thus constructed is first supported horizontally, and the paper transport hole at the leading end of the paper is placed and fixed at a position corresponding to the transport protrusion of the tractor 7. Next, paper presser 1
4 is rotated about the shaft 15, the paper transport hole is engaged with the transport projection of the tractor 7, and then the paper 5'ff- identified by the VC is released.

After performing the above-described operations, the paper is loaded into the five-sheet tractor 7.

Thereafter, by depressing a paper loading switch on an operator panel (not shown), the tractor 7.8 is driven.

The paper 5 loaded on the tractor 7 is pushed between the transfer guide 18 and the outer guide 16 by driving the tractor 7° 8, passes through the transfer means 4, and passes through the transfer means 4. Later, it is pushed between the transfer guide 19 and the outer p guide 17 and reaches the tractor 8.

Next, the paper 5 is held by the transport protrusion of the tractor 8 (-1 and transported to the heat fixing device 9).

Thereafter, the paper 5 is sent to a pull-in roller ] 0 and reaches a folding machine 11 . By performing the actions mentioned above,
The paper 5 is loaded, but the following disadvantages are explained below.In other words, the paper 5 is stored in the hopper 12 in an orderly folded state. From 3-1, the folding [1,141H minute force movement 1] was caught near the entrance of the heat fixing device 90 and in the heat fixing device, paper jams frequently occurred, and operability was poor. 〇(D) Purpose of the Invention In view of the above-mentioned drawbacks, an object of the present invention is to completely prevent the occurrence of paper jams at the entrance and inside of the heating regulator. Paper suction transport device f that improves loading operability
at'ff.

(E) Structure of the Invention According to the present invention, the continuous folding paper is supplied from the paper supply section to the paper storage fA'' section through the printing section.
A paper automatic loading means for automatically loading the paper, a stepped roller provided in the conveyance path of the paper, and a stepped portion of the stepped roller, and is driven at a speed faster than the paper conveyance speed of the conveyance means. The flat belt is equipped with a suction means for sucking all of the paper at the lower part of the flat belt, and the paper conveyance means
When the conveyance speed of the conveyed paper is automatic loading, the suction means is driven to attract the paper to the flat belt and convey it;
At the time of printing, the paper suction conveyance device is characterized in that the suction means 5u and the drive 4- of the nuclear belt are stopped, and the convex portion of the stepped roller is used as a guide means to convey the paper without contacting the flat belt. This is achieved by providing

(F) Embodiment of the Invention FIG. 2 is a diagram for explaining the entire paper suction and conveyance device according to the present invention.

In the figure, five sheets of paper are fed by the tractor 8 via the P guide 22 to the grading roller 20, and as the grading roller 20 rotates, the sheets are further fed in the direction of the arrow.

The paper 5 sent between the stepped rollers 20 and 21 is transferred to the suction means 2
3. The paper is transported while being attracted to the flat belt 24 by a suction force generated in the direction of arrow B by, for example, a small fan. At this time, by setting the circumferential speed of the flat belt 24 to be faster than the conveyance speed of the paper 5 conveyed by the tractor 8, all wrinkles caused by K, such as folding wrinkles on the paper, can be removed.

Next VC4m1F4; is sent to the [ko] guide 25 where the folding device 9 of the paper sheet is inserted, passes through the heat fixing device 9, and is sent to the four-fold folding machine 11, where the paper is folded. Loading is complete.

Then, on the operator panel,
Printing starts when the print start switch is pressed. At this time, the driving of the flat belt 24 and the suction means 23 is stopped.

Therefore, the paper 10 is moved between the guide 22 and the stepped rollers 20 and 21.
Convex parts and people! The vehicle travels guided by the 17rl guide 25. When the paper 5 and the flat belt 24 are conveyed at high speed after printing starts, an appropriate gap is created between the paper 5 and the flat belt 24.
4 does not come into contact with each other, there is no need to worry about friction of the paper 5, destruction of the developing powder image on the paper 5 due to charging, and wear of the belt 24.
Good paper conveyance is a problem.

(G) Effects of the Invention As explained above, according to the present invention, it is possible to prevent the occurrence of wrinkles due to folding of paper, so that paper jams near and inside the entrance of the heating fuser can be prevented. First, the automatic loading of paper can be carried out smoothly, resulting in extremely good operability. ○Still, when printing and transporting paper, the drive of the suction means and flat belt is simply stopped; paper can be transported.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining a conventional paper feeding device. FIG. 2 is a diagram for explaining the paper suction conveyance device according to the present invention. In the figure, 5 is paper, 9Fi heater, 2o. 21 is a stepped roller, 22 is a guide, 23 is a suction means, 2
4 flat belt, 25 is the entry log guide.

Claims (1)

[Claims] A paper automatic loading means for automatically loading continuous folded paper from the paper supply section to the paper storage section via the printing section, a stepped roller provided in the conveyance path of the paper, and a step section of the stepped roller that is hooked to the stepped section. The flat belt is driven at a speed faster than the paper conveyance speed of the paper conveyance means, and the suction means for attracting the paper to the lower part of the flat belt is not provided.
The suction means is driven to attract the paper to the flat belt and the paper is conveyed. During printing, the suction means and the flat belt are stopped, and the convex portion of the stepped roller is used as a guide means to convey the sheet. A paper suction conveyance device that conveys paper without contacting a belt.