JPH04112061A - Printer - Google Patents

Abstract

PURPOSE:To make it possible to miniaturize a printer by providing a reverse pick mechanism for sucking a paper delivered from a paper delivery guide upstream of a printer head and a paper route switch guide for selecting a route of the delivered paper between re-sucking and delivering. CONSTITUTION:A paper P is taken out one by one from a hopper 21 by a pick roller 22, guided by a paper carry-in guide 13, further, sent by a pair of carry-in rollers 13A, 13B, and sent up to a printer head 12 by a platen 11 and feed rollers 11A, 11B being guided by a paper confluence guide 13C so as to be printed. A paper delivery opening for the printed paper is selected by a paper route switch guide 24 and the paper is delivered on a reverse paper placing plate 32. The paper P is sent in again by a reverse pick roller 31, guided by a reverse paper send-in guide 33 and the paper confluence guide 13C, and sent to a position at the printer head 12 by the platen 11 and the feed rollers 11A, 11B so that a face of the paper of which other face is already printed will be printed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer device, and more particularly to a printer device having a structure in which a sheet of paper that is being fed is wound around a half-way along a platen and then sent out in the carrying direction.

[Conventional technology]

2. Description of the Related Art Conventionally, many printer devices have a form in which the printing surface is only one side of paper. On the other hand, many of the devices that allow double-sided printing have complicated structures and are large in size.

[Problem to be solved by the invention]

In the above-mentioned conventional example, in the case of single-sided printing, in order to perform double-sided printing, manual operation by the operator is required, which is troublesome. Furthermore, devices capable of double-sided printing have disadvantages in that they have poor operability and are difficult to handle, partly because the devices are large.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to improve the disadvantages of the conventional example and, in particular, to provide a double-sided printing type printer device that has a simple structure and can be miniaturized.

[Means to solve the problem]

In the present invention, a printer head section is provided at a predetermined location on a platen, a paper carrying guide is provided at a position close to the printer head section and on the upstream side of the printer head section, and a paper carry-in guide is provided at a position close to the printer head section and on the upstream side of the printer head section. In a printer device that has a paper running guide that guides the paper in a half-winding direction along The printer head is configured to include a reverse pick mechanism that sucks paper from its rear end toward the upstream side of the printer head, and a paper route switching guide that selects whether the discharged paper is to be re-suctioned or discharged. This aims to achieve the above-mentioned purpose.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described based on FIG.

In FIG. 1, a printer main body 1 is equipped with a sheet feeder main body 2. As shown in FIG.

The printer body l includes a platen 11, a printer head section 12 disposed on the left side of the platen 11 in FIG. an equipped paper carry-in guide 13; a paper running guide 14 that guides the carried paper P in a half-winding direction along the platen 11;
A paper ejection guide 15 is provided on the downstream side of the printer head section 12 and guides the ejection movement of the paper.

Furthermore, a pair of carry-in rollers 13A and 13B are provided on the platen 11 side of the paper carry-in guide 13. Reference numeral 13C indicates a paper merging guide.

Feed rollers IIA and IIB that are in contact with the platen 11 are disposed along the traveling direction of the paper P in the paper running guide 14 portion. Further, a feed roller 15 for feeding out the paper is provided at the paper inflow end portion of the paper ejection guide 15.
It is equipped with A.

Furthermore, a paper manual feeding guide 40 is provided on the paper intake side portion of the paper running guide 14 described above to take in the paper P externally inputted from the right side in FIG. Reference numeral 15A indicates an intermediate feed roller installed at the entrance of the paper ejection guide 15, and reference numeral 15B indicates a guide plate for preventing the paper from being rolled into the platen.

On the other hand, on the right side of the sheet feeder main body 2 in FIG. 1, a hopper 21 is provided, which is set somewhat obliquely to the right. A paper feeding portion at the lower end of the hopper 21 is equipped with a pink roller 22 for feeding the paper. The paper P sent out by the pick roller 22 is sent to the platen 11 side via the paper carry-in guide 13 described above.

A paper storage stacker 23 is provided on the left side of the sheet feeder main body 2 in FIG. 1, and is inclined slightly to the left. The lower end of the paper receipt stacker 23 is disposed near the paper discharge port of the paper discharge guide 15 described above. A pair of paper ejection rollers 23A and 23B are provided at the paper ejection port of the paper ejection guide 15. A paper route switching guide 24 is provided at the paper discharge rollers 23A and 23B.

A reverse pick mechanism 30 is provided on the right side of the paper route switching guide 24 in FIG. 1 to send the discharged paper P back to the platen 11 side. The paper route switching guide 24 includes a guide lever 24B that rotates in the A or B direction about a support shaft 24A. When the guide lever 248 is rotated in the A direction, it indicates that the paper is printed on one side. Further, when the guide lever 248 is rotated in the direction B, this indicates a double-sided printing state of the paper.

The reverse pick mechanism 30 includes the above-mentioned paper ejection roller 2.
3B, a reverse paper placement plate 32 that is close to the reverse pick roller 31 and located above the paper winding roller 31 in FIG. 1, and a paper winding roller 3B. 31, the paper traveling guide 15 on the side of the platen 11 mentioned above
It is composed of a reverse paper feed guide 33 that guides the paper to the side. In this case, the paper P for double-sided printing is
After printing on one side is completed, it is rolled up from the rear end. For this reason, the timing of printing also changes.
It is designed to be controlled in accordance with the rolling state of the paper P.

Next, the operation of the above embodiment will be explained.

Paper P is pulled out one by one from the hopper 21 by a pick roller 22, guided by a paper carry-in guide 13, further fed by a pair of carry-in rollers 13A and 13B, guided by a paper merging guide 13C, and fed to the platen 11. It is sent to the printer head 12 by rollers IIA and 11B, and printing is performed by the printer head 12. After the printed paper is guided by the paper ejection guide 15 and sent out by the paper ejection rollers 23A and 23B, the paper route switching guide 24 selects the paper ejection port, and the paper is ejected onto the reverse paper placement plate 32. be exposed.

Next, the paper P discharged onto the reverse paper placement plate 32 is sent in again from the rear end by the reverse pick roller 31, guided by the reverse paper feed guide 33 and the paper merging guide 13C, and then placed on the platen 1.
1. The paper is sent to the printer head 12 by feed rollers 11A and IIB, and the back side of the paper that has already been printed on one side is printed.

〔Effect of the invention〕

Since the present invention is configured and functions as described above, it not only enables double-sided printing, but also has a simple structure, which allows the entire device to be miniaturized, and can be automated, which significantly improves operability. It is possible to provide an unprecedented and excellent printer device.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention. 11...Platen, 12...Printer head section, 13...Paper loading guide, 14...
... Paper travel guide, 15 ... Paper discharge guide, 24 ... Paper route switching guide, 30
...Reverse pick mechanism. Figure 1 Applicant: Nihon Denki Co., Ltd. (and 1 other person) Agent: Patent attorney Isamu Takahashi 13...Paper import guide +4...Paper running guide 15...Paper discharge guide 24...Paper route Switching guide 30...Reverse big mechanism

Claims (1)

[Claims] (1) A printer head disposed at a predetermined location on the platen, a paper carry-in guide disposed close to the printer head and upstream of the printer head, and a paper carry-in guide for transporting the carried paper to the platen. A printer device comprising a paper running guide that guides the paper in a half-winding direction along the printer head, and a paper ejection guide that is disposed downstream of the printer head and guides the ejection travel of the paper, wherein the paper is sent out from the paper ejection guide. The present invention is characterized by comprising a reverse pick mechanism that sucks the ejected paper from its rear end toward the upstream side of the printer head, and a paper route switching guide that selects the ejected paper to be re-inhaled or ejected. printer device.