JPS6142847Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a mechanism for stamping copy sheets, facsimile receiving paper, and the like.

Automatic feeder (ADF) for copy sheets (original)
For devices equipped with this function, it is necessary to check whether the document is double-fed. Furthermore, in cases such as facsimile, where transmission and reception are carried out at separate locations, it is necessary to check whether the transmission of information is not obstructed by reception jams or the like. Conventionally, as a method to meet these needs, there has been known a method of stamping a mark indicating that the document has been fed normally on a fed document or a reception completion sheet to confirm whether or not the document has been fed properly.

Incidentally, as described above, the conventional apparatus uses a commercially available magnetic type stamping mechanism as a stamping mechanism for confirming the suitability of sheet feeding. Although the location of stamping on the sheet varies depending on the conditions and timing of stamping, the installed model, and the purpose of stamping, this stamping mechanism is installed on the sheet delivery roller due to the necessity of confirming sheet feeding. It is disposed downstream, that is, at a location immediately in front of the paper transport tray. For this reason, in the conventional stamping mechanism, the sheet delivery roller must be placed aside, and the locations where the stamp can be stamped on the sheet are naturally limited. Also,
In this type of apparatus, since it is necessary to secure an installation space for the stamping mechanism, the space at the sheet delivery portion becomes larger than necessary, which is a significant drawback in models aiming for compact specifications. moreover,
In the conventional apparatus, since it is necessary to provide a stamp mechanism downstream of the sheet discharge roller, it is necessary to provide a new sheet discharge roller for conveying the stamped sheet onto the paper discharge tray. For this reason, in conventional devices, this sheet ejection area is further expanded and there is also a sheet ejection roller downstream of the stamping mechanism, so stamping the sheet cannot strictly be used as a means of confirming the completion of accurate sheet feeding. It disappears. This is not only a major drawback from the point of view of stamping purposes, but also adds another source of sheet jam, which is disadvantageous in terms of equipment cost and maintenance.

This invention was made in view of the above points, and its purpose is to create a stamping mechanism that does not require additional installation space and does not require an extra sheet ejection roller downstream of it. Our goal is to provide the following.

In other words, the characteristics of the stamping mechanism invented by this invention are as follows.
The printing plate for stamping marks is formed in the form of a roll, and the roll-shaped stamping roller is mounted at a suitable position on the sheet discharge roller via a one-turn clutch. Therefore, in the device implementing this invention, the stamping roller is disposed coaxially with the sheet ejection roller, so there is no need to provide additional space for the stamping mechanism, making it more compact and inexpensive. can be achieved. Further, in the mechanism of this invention, the mark for confirming the completion of sheet feeding is performed directly below the sheet ejection roller shaft, so that it is possible to accurately confirm whether or not sheet ejection is complete.

Hereinafter, this invention will be explained in detail with reference to an illustrated embodiment.

FIG. 1 is a schematic diagram of a scanner implementing this invention. In FIG. 1, a document 1 is held between incremental rollers 2 and conveyed in the direction indicated by the arrow. The incremental roller 2 is driven intermittently by a step motor 3. The information on the document 1 sandwiched between the target glass 4 and the pressure plate 5 is reflected by the light of the fluorescent lamp 6, and formed into an image on the reading element 9 (CCD) via the reflecting mirror 7 and lens 8. be read.

FIG. 2 is a detailed view of the sheet ejection roller section 10 of the scanner described above.

In Fig. 2, the roller shaft 2 of the sheet ejection roller 2 (incremental roller on the sheet ejection side)
A stamping roller 11 is mounted on the shaft via a one-turn clutch 12. In addition, this stamping roller 1
A stamp plate 1 formed in a roll shape is placed at an appropriate position on the circumferential surface of the plate 1.
1a is attached.

The stamping roller 11 is rotated by the roller shaft 2a of the sheet discharging roller 2 as the rotary clutch 12 is operated.
, rotationally connected and disconnected.

That is, as shown in FIG. 3, the one-turn clutch 12 is composed of a clutch cylinder 12a and a clutch spring 12b, one end of which is connected to the clutch cylinder 12a, and the other end to the stamping roller 11. has been done.
On the other hand, clutch teeth 12c are formed on the clutch barrel 12a.
The clutch armature 13 is engaged with the clutch armature 13. The clutch armature 13 is swingably disposed on a U-shaped bracket 14 as shown in FIG. It is in contact with the circumferential surface of 12a. Further, near the abdomen of the clutch armature 13, a magnetism absorbing portion 16a of the magnet 16 extends.

In FIG. 2, when the magnet 16 is energized, the clutch armature 13 resists the elasticity of the spring 15 and is attracted to the magnetic absorbing portion 16a, and its free end is disengaged from the clutch tooth 12c. . As a result, the clutch spring 12b, which had previously slipped with respect to the sheet ejection roller shaft 2a,
is elastically connected to the roller shaft 2a. Along with this connection between the clutch spring 12b and the roller shaft 2a, the stamping roller 11 is connected to the roller shaft 2a.
The stamp roller 11 rotates as the sheet discharge roller 2 rotates. When the stamp roller 11 starts rotating in this manner, the ink roller 17 comes into sliding contact with the stamp plate 11a, and ink is deposited on the stamp plate 11a, as shown in FIG. As the stamping roller 11 continues to rotate further, the ink on the stamping plate 11a is stamped onto the document 1, and a mark indicating completion of paper ejection is stamped. Note that the stamping roller 11 is connected to the clutch spring 12b.
When the clutch cylinder 12b rotates once and reaches its starting position, the magnet 16
The clutch tooth 12 is attached to the free end of the clutch armature 13 which has been returned to its original position by de-energization.
c is engaged again, the connection between the roller shaft 2a and the clutch spring 12b is released, and only the sheet ejection roller 2 continues to rotate, and the document 1 is ejected onto the tray 18.

The outer diameter of the stamping roller 11 excluding the stamping plate 11a is set smaller than the outer diameter of the sheet discharge roller 2 in order to avoid sliding contact with the document 1.

The location of the stamp roller 11 may be, for example, on either the transmitted document side or the received sheet side or both, depending on the system, and its use can be selected in any way, such as depending on whether or not information is to be transmitted, or whether or not jamming occurs during transmission or reception.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a scanner implementing this invention, Fig. 2 is a detailed view of the sheet ejection roller section of the scanner, and Fig. 3 is a cross-section of the sheet ejection roller and the stamping roller of the stamping mechanism according to this invention. FIG. 4 is a detailed view of a main part of a one-turn clutch for the purpose of printing, and is a schematic diagram for explaining the operating mode of the stamping roller. 1...Document, 2...Sheet ejection roller, 2a...
... Sheet discharge roller shaft, 11 ... Stamp roller, 1
1a... Stamp plate, 12... One rotation clutch.

Claims (1)

[Scope of utility model registration request] In an apparatus in which a stamping mechanism is provided in the sheet path of a sheet conveying device, the stamping plate is formed into a roll, and the rolled stamping roller is placed at an appropriate position on the sheet conveying roller shaft of the sheet conveying device, and a one-turn clutch is applied. A stamping mechanism characterized by being mounted on a shaft through a shaft.