JPS5833353A - Original feeding and discharging mechanism of facsimile device - Google Patents

Abstract

PURPOSE:To use without a trouble an original on which the print ink is not completely dried, by adding a simple cleaning mechanism to the paper feeding/ discharging mechanism. CONSTITUTION:A roll paper support shaft 7 and a roll paper take-up shaft 8 are driven so as to make the travelling speed of the toll paper 6 lower than the revolving speed of the roller 3 only when the roller 3 turns toward an arrow mark. An appropriate amount of pressure is applied to a press-contact member 9 by a spring 9, and as a result the roll paper 6 is pressed to the roller 3. When an original which is not dried completely is fed by the roller 3, the print ink sticks to the roller 3, but if high water absorbing capability is used, the ink is absorbed to the paper 6 at the area of the member 9 and wiped. Thus the roller 3 is always kept clean against the original.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a document feeding/discharging mechanism in a facsimile transmission device.

In facsimile transmission devices that automatically feed the original to be sent to an optical scanning unit using a paper feed roller and eject it to the outside after scanning, conventionally, rubber or nylon materials are used to feed and eject the original to be sent. It was common to use rollers such as In this case, if you electronically send the document immediately after creating it, the ink will transfer to the roller side because the printing ink is not dry, and the ink transferred to the p-ra will be transferred to other parts of the document. Therefore, there was a problem in that not only did it stain the original document, but it also caused a deterioration in the quality of the received image. This problem becomes a big problem in systems such as press facsimiles, where the time required to create a busy manuscript and send it to an electronic mailer is short.

Although there is a method using a drying agent (such as setal), it is difficult to completely prevent ink transfer depending on conditions such as the degree of dryness, humidity, and amount of ink.

The present invention solves the above-mentioned problems, eliminates the need to select the material of the paper, and adds a simple evening cleaning device to the conventional paper feed/discharge mechanism. The purpose is to provide a document feed/discharge mechanism that can be used for document feed/discharge. , a take-up shaft that pinches the tip of the roll paper and winds it up, and in the feeding path of the roll paper, a part of the roller where the roll paper comes into contact with the document printing surface side of the paper feed sheet roller is elastically attached. The roll paper support shaft and the two winding shafts are arranged so as to be in pressure contact with each other through the body.

Next, explanation will be given with reference to the drawings. FIG. 1 is a side view showing the main parts of a conventional cylindrical inner scanning type press facsimile machine, in which a document 1 is conveyed in the direction of the arrow by a paper feed driven roller 2 and a drive roller 3, and is moved against the inner wall of a cylinder 4. is installed in a predetermined position along the Note that 5 is a document guide plate 0. The inner surface of document 1 is the printed surface to be scanned, and if the printing ink is not dry, the ink will be transferred to the surface of roller 3, so the ink transfer portion of the roller will be on the surface of the document. Transfers ink to the original when it comes to the surface. After scanning is completed, the document l is discharged to the outside by rotating the roller 3 in the direction opposite to the arrow.

FIG. 2 is a side view of essential parts showing an embodiment of the present invention. In the figure, 3 is a paper feed roller in contact with the printing surface side of the original, 6 is a roll M, 7t10-ru a support shaft, and s is a roll paper winding shaft. ,
The roll paper 6 is driven so that the traveling speed of the roll paper 6 is slower than the circumferential speed of the row 23. Reference numeral 9 denotes an elastic pressure member such as felt or pants f, and 10 a spring that applies appropriate pressure to the pressure member 9 to press the roll paper 6 against the paper feed roller 3. Now, when an undried document is fed by the roller 3, the ink will stick to the roller 3, but if the roll paper 60 is made of paper with good water absorption, the ink will stick to the roll paper 6 at the pressure bonding member 90. Since the document is absorbed and wiped, the paper feed roller 23 always faces the document in a clean state.

As explained above, according to the present invention, by simply adding a lint mechanism to a conventional paper feed/discharge mechanism, it is possible to use originals whose printing ink is insufficiently dried without any trouble. arise.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the configuration of the main parts of a conventional cylindrical surface scanning type press facsimile machine, and FIG. 2 is a side view of the main parts showing an embodiment of the present invention. 1...-document, 2...-paper feed driven roller:
3------7 Paper feed drive row), 4---Hollow cylinder, 5---Document guide, 6---Roll paper, 7------ Roll paper support shaft, 8...-
Winding shaft, 9...--Crimping member, lO...--Spring〇Figure 1 Figure 2

Claims (1)

[Claims] A paper feed roller that supplies a document to be transmitted to an optical scanning unit and discharges it to the outside after scanning, a roll paper whose width is equal to or greater than the width of the document paper, and a roll paper that is rotatable approximately parallel to the roller axis. a support shaft that holds the roll paper; a take-up shaft that grips and winds the leading end of the roll paper; and, in the transport path of the roll paper, the roll paper is attached to a portion of the roller that is in contact with the document printing surface side of the paper feed roller. 1. A document feeding/discharging mechanism for a facsimile machine, comprising means for press-contacting via an elastic body.