JPH07297Y2 - Printer cut sheet feeder - Google Patents

Description

[Detailed Description of the Invention] [Outline] A cut sheet feeder to be used by being installed in a printer, in which the movable paper guide is displaced by an external force applying member of the printer when the cut sheet feeder is installed in a different type printer having different paper guides. The printer is configured so as to be automatically set to a position suitable for this printer, thereby realizing common use by different types of printers.

[Industrial application field]

The present invention relates to a cut sheet feeder (hereinafter also simply referred to as “sheet feeder”) mounted on a printer, and particularly to a paper guide for the cut sheet feeder.

In recent years, a large number of wire dot printers, thermal printers, and the like have become widespread as output recording devices for personal computers, word processors, etc., and cut sheet feeders are used in such printers to supply cut sheets to them. . On the other hand, most of the printers described above have been single-color printers that use single-color ink ribbons, but in recent years, multi-color printers that use multi-color ink ribbons have become widespread. There is a problem that the sheet feeder for a single color printer cannot be used for a multicolor printer.

[Problems to be solved by conventional techniques and devices]

FIG. 2 is a view showing a state in which a conventional sheet feeder for a monochromatic printer is mounted on a wire dot printer.
The cut sheet (not shown) supplied from the other side is fed along the paper guide 2 by the platen 1 and a feed roller (not shown) opposite thereto, and here the ribbon guide 3
The platen 1 is hit by the printer head 4 together with the ink ribbon (not shown) supported by the sheet to be printed, and then discharged along the guides 6 and 7 of the sheet feeder in the direction of arrow B. Here, the guide 6 of the sheet feeder is shaped so as to project considerably outward so that the discharged cut sheet can be reliably captured and guided.
This shape causes no problem in the monochrome printer because the ink ribbon guide 3 does not move up and down. However, for example, in the case of a multicolor printer using a multicolor ink ribbon divided into several colors,
When the ink ribbon guide 3 shifts up and down as shown by an arrow S in order to match each color segment of the ink ribbon with the print position, the ink ribbon guide 3 comes into contact with the guide 6.

For this reason, the sheet feeder for the multicolor printer has a shape in which the ejected cut sheet guides 6A and 7A are retracted inward so as not to interfere with the vertical shift of the ink ribbon guide 3, as shown in FIG. . In this case, the paper guide 2A of the printer is the paper guide 2 of the monochrome printer.
With the same length (hatched portion) as the cut sheet, the cut sheet is not properly inserted between the guides 6A and 7A as indicated by the arrow C. Therefore, the cut sheet is extended and the cut sheet is indicated by the arrow B. It is necessary to ensure that it is inserted between 7A.

As described above, the conventional sheet feeder for a single color printer cannot be used in a multicolor printer due to the contact between the ink ribbon guide and the paper guide, while the sheet feeder for a multicolor printer is used in the paper guides of the single color printer and the multicolor printer. Due to the difference, it cannot be used for a monochrome printer and is not compatible. Therefore, it is necessary to manufacture two types of cut sheet feeders, which is problematic in terms of cost. In particular, in the case of a newly manufactured monochromatic printer, it is possible to use a sheet feeder for a multicolor printer by making the paper guide 2 of the monochromatic printer the same as the paper guide 2A of the multicolor printer. In this case, this is impossible, and there is a problem that the sheet feeder dedicated to the monochromatic printer must be continuously replenished.

Therefore, an object of the present invention is to solve such a problem, that is, to provide a cut sheet feeder that can be shared by printers having different paper guides as described above.

[Means for solving problems]

In order to solve the above problems, the present invention provides a cut sheet feeder with a movable paper guide that can be displaced by the action of an external force, and when mounted on a different type printer with different paper guides, applies an external force to the different type printer. The movable paper guide is displaced by a member and automatically set at a position suitable for the different type printer.

[Action]

If the movable paper guide of the sheet feeder is set to a position suitable for a single color printer, it can be used as it is for a single color printer, and if a multicolor printer is provided with an external force applying member, the sheet feeder can be mounted on the multicolor printer. Occasionally, the movable paper guide will automatically be set to a position that fits the multicolor printer and can be shared by both printers.

〔Example〕

FIG. 1 shows an example of the sheet feeder of the present invention, (a)
Shows a state of being mounted on a monochromatic printer, and (b) shows a state of being mounted on a multicolor printer. This sheet feeder has a guide bracket 10, which is pivotally attached to a frame 5 of the sheet feeder by earpieces 11 and is rotatable about a pivot axis of the earpieces 11. The guide bracket 10 includes a paper guide 12 made of a flat plate and a paper guide made of a leaf spring.
13 is provided, and further a leaf spring 14 is attached.

A tension coil spring 15 is stretched between the upper end 16 of the guide bracket 10 and the sheet feeder frame 5, whereby the guide bracket 10 is rotated around the pivot axis of the ear device 11 in the arrow X direction, and the upper end of the guide bracket 10 is rotated. 16 is held in contact with the frame.

When this sheet feeder is installed in a monochrome printer as shown in FIG. 1 (a), the paper guides 12 and 13 are compatible with the paper guide 2 of the printer, and the cut sheet is between the paper guides 12 and 13 as indicated by arrow B. Is smoothly inserted into.

On the other hand, when the above sheet feeder is mounted on a multicolor printer as shown in FIG. 1B, the leaf spring 14 of the guide bracket 10 is fixed to the side frame (not shown) of the printer. An external force is applied by abutting (particularly indicated by hatching), whereby the guide bracket 10 is rotated about the pivot axis of the ear device 11 in the arrow Z direction until the lower bracket portion 17 contacts the frame 5. . As a result, the paper guides 12 and 13 of the guide bracket 10 are displaced in the direction of the arrow Y, which does not hinder the vertical shift of the ink ribbon guide 3, that is, the position suitable for the paper guide 2A of the multicolor printer, and the cut sheet As shown by the arrow B, the guides 12 and 13 are automatically set to a position where they can be smoothly inserted.

[Effect of device]

As described above, the cut sheet feeder according to the present invention can be shared by different types of printers such as a single color printer and a multicolor printer, and compatibility can be realized. Further, as a result, it is possible to mass-produce a single type and reduce the production cost.

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of the present invention, in which (a) shows a single color printer mounted state and (b) shows a multicolor printer mounted state. FIG. 2 is a diagram showing a conventional single-color printer sheet feeder. FIG. 3 is a diagram showing a conventional sheet feeder for a multicolor printer. In FIG. 1, 1 is a platen, 2 and 2A are printer paper guides, 3 is an ink ribbon guide, 4 is a printer head, 5 is a sheet feeder frame, 10 is a guide bracket 12, 13 is a paper guide, and 14 is a plate. The spring 15 is an external force applying member.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masatoshi Saito, 1776 Yanoguchi, Inagi-shi, Tokyo, inside Fujitsu Kiden Co., Ltd. (72) Hiroaki Takazawa, 1776, Yanoguchi, Inagi-shi, Tokyo (56) References, (56) References JP-A-61-143162 (JP, A) JP-A-61-118277 (JP, A)

Claims (1)

[Scope of utility model registration request] 1. A cut sheet feeder equipped with a paper guide for guiding a cut sheet, which is mounted on a printer, wherein the paper guide is located at a first position when mounted on a monochromatic printer. However, when mounted on a multicolor printer, the position can be changed by an external force action so that the multicolor printer is positioned at a second position different from the first position by an external force applying member provided on the multicolor printer side. A cut sheet feeder for a printer, which is a supported movable paper guide.