JPS62248671A - Printer - Google Patents

Abstract

PURPOSE:To enable a top margin on a medium to be eliminated when a front inserter is used, by providing a medium-feeding passage with a driving roller and a driven roller. CONSTITUTION:When a medium 19 is set to a front inserter 12, the medium 19 is fed out into a printing part 18 by rotating rollers 13a, 13b. With the medium 19 detected by a detector, a driven roller 20b is set into a position for opening, or separating, from a driving roller 20a by a drive source such as a solenoid and a pulse motor. Under this condition, the medium 19 is fed out further, and when it is located in a gap between the rollers 20a, 20b, feeding of the medium 19 by the rollers 13a, 13b is stopped. Then, the driven roller 20b is switched into a position for making contact with and being pressed against the driving roller 20a. Thereafter, the medium 19 is fed by the rollers 20a, 20b to a printing position, at which it is stopped. At this time, an upper end part of the medium 19 is relased from the rollers 13a, 13b, and is fed close to the position of a printing part 18.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a printer used as an output device for various types of high-end equipment.

2. Description of the Related Art Conventionally, when a front inserter is used in a printer, the printer side usually has a medium conveyance path for storing the medium for the front inserter, in addition to the medium path when used only in the printer.

This medium conveyance path only secures a space for the medium to pass through when sucking the medium toward the print section of the printer or ejecting the medium after printing is completed by the medium feed drive roller of the front inserter. be. Printing using a front inserter in this type of printer will be described below with reference to the drawings.

In FIG. 2, the front inserter 2 is mounted on the printer main body 1, is rotatably supported, and has a drive roller 3& which is rotationally driven by a drive source (not shown) and a driven roller 3b which abuts and presses the drive roller 3a. Built-in. The printer main body 1 has a medium conveyance path 6 formed by guide plates 4 & 4b, and a printing section 8 consisting of a print head 6 and a platen 7 is provided above the medium conveyance path 6. When the front inserter medium 9 is set in the front inserter 2 with the above configuration, the rotation of the rollers 3 & 3b sends out the medium 9 into the printing section 8, and further the medium conveyance path formed by the guide plates 4L, 4b. 6
I send it off to.

The feeding operation is stopped when the upper end of the medium 9 comes near the rollers 3&, 3b. Next, in this state, printing is started, and after each line of printing, the medium is pulled up in reverse order, until the medium 9
When printing is completed to near the bottom edge of the roller 3
&, 3b, the medium 9 is directly ejected to the front inserter 2 side, or it passes through the medium transport path 5 again and is ejected to the outside from the bottom of the printer main body 1.

Problems to be Solved by the Invention In such a conventional configuration, since the medium 9 is held and conveyed by the rollers 3a and 3b in the front inserter 2, the entire upper end of the medium 9 is There is a problem in that the top margin of the medium 9, which is the unprintable area, becomes large. I couldn't do it.

The present invention has been made to solve these problems, and an object of the present invention is to provide a printer that can reduce the margin at the top of the medium when printing on a cut medium using a front inserter.

Means for Solving the Problems In order to solve all of these problems, the present invention has a configuration in which a drive roller device is disposed within the conveyance path of the medium for the front inserter.

Function: With this configuration, the medium can be held and transported by the drive roller in the front inserter and above and below the printing section of the printer main body, and the upper end of the medium is transported to the printing section of the printer main body. This makes it possible to minimize the unprintable top margin portion of the medium.

Embodiment FIG. 1 is a cross-sectional view of a printer equipped with a front inserter according to an embodiment of the present invention. In FIG. 1, a front inserter 12 is mounted on the printer main body 11,
A drive roller 13&, which is rotatably supported and rotationally driven by a drive source (not shown), and a driven roller 1ab'6 which abuts and presses the drive roller 131L are built in.

The printer main body 11 has a medium conveyance path 16 formed from guide plates 14 & 14b, and a printing section 18 consisting of a print head 16 and a platen 17 is provided above the medium conveyance path 16. Below the printing unit 18 is a drive roller 20 for conveying the medium 19! L and driven roller 2ob are provided to sandwich the medium conveyance path 16, so that the medium 19 can be conveyed and held by the driving roller 13a and driven roller 13b of the front inserter 12 above and below the printing unit 18. It has become. The drive roller 20a is composed of 4 to 6 rubber rollers on a shaft, and uses the rotational force of the platen 16 as a driving source, and the rotational force is transmitted from the platen gear 21 to the gear 22 of the drive roller shaft. .

The driven roller 2ob is supported and fixed to the drive roller 20& by a drive source (not shown), such as a solenoid or a pulse motor, so that it can be switched between a contacting and pressing position and an open and separating position.

The operation of the printer configured as above will be described below.

When the medium 19 to be supplied to the front inserter 12 is set in the front inserter 12, the rollers 13a, 1
The medium 19 is sent out into the printing section 18 by the rotation of 3b. At this time, when the medium 19 is detected by a detection device (not shown), the driven roller 20b is activated by the drive source such as a solenoid or a pulse motor according to the signal.
In contrast, it is set in the open release position. In this state, the medium 19 is further fed out and the drive roller 201L
When roller 1 is positioned in the gap between
Conveyance of the medium 19 by 3a and 13b is stopped, and then the driven roller 20b is switched to the abutting and pressing position with respect to the driving roller 20&. After that, drive roller 20! The medium 19 is conveyed to the printing position by L and the driven roller 2ob and then stopped. At this time, the upper end of the medium 19 is
3b and is being conveyed close to the position of the printing section 18.

In this state, printing is first started from the very upper end of the medium 19, and the medium 19 is sequentially conveyed upward in reverse order for each line of printing, until the medium 19 reaches the roller 13! From the state located in L, 13b, the upper and lower rollers 13 &.

13t) and rollers 20a and 20b to convey the medium 19. When printing is completed, the medium 19 is discharged to the front inserter 12 side by the roller 13a.

13b, and when discharging to the bottom side of the printer, the rollers 20&, 20tl are in the open release position, and the rollers 13! L, 131), and the roller 1
3a, 13bi Once the medium 19 has passed, the medium 19 will be discharged by its own weight.

In addition, during this operation, the driven roller 131) of the front inserter 12 also moves to the driven roller 20b on the printer main body 11 side.
Similarly, if it is attached to the drive roller 132L so that it can be switched between the abutting and pressing position and the release and release position,
It goes without saying that the medium can be conveyed more effectively by the combination of the abutting and pressing positions and the release/separation positions of the rollers 13&, 13b and the rollers 201L, 20kl.

Effects of the Invention As described above, according to the present invention, by providing a driving roller and a driven roller in the medium conveyance path, it is possible to eliminate the blank area at the top of the medium, which is the unprintable area, when a front inserter is used. can get.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a printer according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional printer. 11... Printer, 12... Front inserter, 13a... Drive roller, 13b...
...Followed roller, 16...Medium conveyance path, 16
・Old...Print head, 17...Platen, 18
...Printing section, 19...Medium, 20a.
... Drive roller, 20b ... Driven roller 0

Claims (1)

[Claims] It is equipped with a front inserter, has a medium conveyance path via a printing section consisting of a print head and a platen, and has a driving roller and a driven roller disposed at a position below and close to the printing section in the medium conveyance path. A printer characterized by: