Recording apparatus with a recording paper mounted in an open/cl

Details Recording apparatus with a recording paper mounted in an open/cl Recording apparatus with a recording paper mounted in an open/cl

1999-05-06

2000-08-29

Hilten, John

Typewriting machines

Sheet or web

For feeding web record-medium

400613, 400619, 4005941, B41J 1126

Patent

active

061098051

DESCRIPTION:

BRIEF SUMMARY
DESCRIPTION

1. Technical Field
The present invention relates to a recording apparatus for recording information on roll-like recording paper.
2. Background Art
Conventionally, a recording apparatus using roll-like paper as recording paper has been practically used widely. As a recording apparatus of this kind, there are a printer for printing on a receipt, a facsimile for recording signals transmitted, for example. Such an apparatus includes an apparatus body, a conveying path provided in the apparatus body, recording paper of a roll of recording paper which is conveyed through the conveying path, and recording means for recording information on the recording paper conveyed through the conveying path. An open/close cover is mounted on the apparatus body such that the cover can pivot between an open position and a close position about its pivot. The open/close cover is provided with recording paper holding means for supporting and holding the roll of recording paper such that the recording paper holding means can rotate about its rotation axis. The recording paper is pulled out from the roll of recording paper, and a tip end of the recording paper is conveyed through the conveying path as required.
A roll of recording paper used in this kind of recording apparatus generally includes a thin cylindrical core member, and is formed by winding long and narrow recording paper around this core member as required. When a used roll of recording paper is replaced by a new roll of recording paper, the open/close cover is first opened to its open position. Then, in a state in which the cover is held at the open position, the roll of recording paper (some length of recording paper may be remained, or there may be no recording paper and only the core member is remained depending upon cases) is removed from the recording paper holding means, and the new roll of recording paper is mounted on the recording paper holding means. After the new roll of recording paper is mounted, a tip end of the recording paper is pulled out from the roll of recording paper and is introduced into the conveying path, and the tip end is nipped by printing means or by a pair of conveying rollers which feeds the recording paper toward the printing means so that the recording paper can be fed. Thereafter, the open/close cover is positioned to the close position. In this manner, the new roll of recording paper can be mounted in place of the used roll of recording paper.
In this kind of recording apparatus, generally, when a new roll of recording paper is mounted, it is difficult to hold the recording paper introduced from this roll of recording paper into the conveying path in an appropriately pulled state, and the recording paper pulled out from the roll of recording paper is somewhat loose. The conventional recording apparatus is not provided with means for taking up the slack in the recording paper generated in this manner. Therefore, after the roll of recording paper is replaced, the recording paper is held in the conveying path in a somewhat loose state. If the recording is carried out on the recording paper in such a state, when the slack is taken up by feeding operation of the recording paper, impact force for rotating the roll of recording paper is applied to the recording paper, and there is a problem that the print on the recording paper surface is disordered by this impact force.
Further, in this kind of recording apparatus, the rotation center of the roll of recording paper (in generally, the roll of recording paper is substantially uniformly wound in the form of a cylinder, and thus the center of gravity thereof is located at the rotation center of the roll of recording paper) is different from the pivot of the open/close cover, and due to this fact, the following problem is caused. That is, in the case of the conventional recording apparatus, the pivot of the open/close cover is disposed at a rear end of the apparatus body, and the rotation center of the roll of recording paper is disposed forward of the pivot by a distance in some de

REFERENCES:
patent: 5077614 (1991-12-01), Stemmle et al.
patent: 5411342 (1995-05-01), Horie et al.
patent: 5516219 (1996-05-01), Leonard et al.
Pending U.S. Application No. 09/297,766, filed May 7, 1999, entitled "Printer", by Kazuyasu Ono et al., located in Group Art Unit 2854.

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