JPS591289A - Paper end detector - Google Patents

Abstract

PURPOSE:To enable to detect the trailing end of a paper at the moment printing on one page is completed, by a method wherein the spacing between a detecting position and a printing position for a paper can be changed in accordance with one-page length of a predetermined printing paper. CONSTITUTION:A paper-detecting mechanism 2 is moved in a vertical direction in accordance with a value set by a paper length setting mechanism 1 such as a dial, and the spacing l thereof from the printing position 3 is set to be a multiple of the one-page length of the printing paper 4. When the trailing end of the paper 4 is detected by the mechanism 2 during a process of printing on the paper 4, since the spacing l between the detecting position and the printing position 3 is a multiple of the one-page length, the last line in a page is located at the printing position 3, so that the trailing end is detected when the last line is printed.

Description

【発明の詳細な説明】 （１）　　発明の属する技術分野の説明本発明は情報処
理装置の周辺装置として使用される印字装置の印字用紙
終了検出装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (1) Description of the technical field to which the invention pertains The present invention relates to a printing paper end detection device for a printing device used as a peripheral device of an information processing device.

（２）従来技術の説明 従来、この種の用紙終了検出装置は印字用紙の１ページ
当シの長さとは関係なく用紙検出位置が固定されており
、印字用紙の終了が検出され走時に印字位置が１ページ
の途中に々ったままで以後の印字ができなくなるという
ことがあった．即ち、１ページの途中まで印字された時
に印字用紙の終了が検出され、新しく印字用紙をセット
して引き続き印字データを印字するために、１ページに
印字されるべき印字データが２ページにまたがって印字
されることがあるという欠点があった。(2) Description of Prior Art Conventionally, in this type of paper end detection device, the paper detection position is fixed regardless of the length of one page of printing paper, and the end of the printing paper is detected and the printing position is There was a case where the printout remained in the middle of a page, making it impossible to print any more. In other words, the end of the print paper is detected when printing reaches the middle of one page, and in order to set a new print paper and continue printing the print data, the print data that should be printed on one page is spread over two pages. It had the disadvantage that it could be printed.

（３）発明の目的の説明 本発明は従来の上記欠点を解消する為になされたもので
あシ、従って本発明の目的は、用紙検出位置と印字位置
の間隔を用紙長設定機構に設定された印字用紙の１ペー
ジ当りの用紙長に応じて変動させることによシ、印字用
紙の１ページが印字終了した時点で印字用紙の終了を検
出できるようにした新規な用紙終了検出装置を提供する
ことにある。(3) Description of the purpose of the invention The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional technology.Therefore, an object of the present invention is to set the distance between the paper detection position and the printing position in the paper length setting mechanism. To provide a new paper end detection device which can detect the end of printing paper at the time when printing of one page of printing paper is completed by changing the paper length according to the paper length per page of the printing paper. There is a particular thing.

（４）　　発明の構成の説明 本発明によれば、印字用紙の１ページ当シの用紙長を設
定するための用紙長設定機構と、該用紙長設定機構によ
って設定された値に応じて用紙検出位置と印字位置との
間隔を変動でき、印字用紙が終、了したことを検出する
用紙検出機構とを具備した用紙終了検出装置、が得られ
る。(4) Description of the structure of the invention According to the present invention, there is a paper length setting mechanism for setting the paper length of one page of printing paper, and paper detection according to the value set by the paper length setting mechanism. A paper end detection device that can vary the interval between the position and the printing position and is equipped with a paper detection mechanism that detects when printing paper is finished is obtained.

（５）　　発明の詳細な説明 次に本発明をその良好な一実施例について図面を参照し
て詳細に説明する。(5) Detailed Description of the Invention Next, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

本発明の一実施例を示す第１図は印字装置の用紙検出に
関する部分を示したものである０図において、本発明に
係る用紙終了検出装置の一実施例は、用紙長設定機構１
と、用紙長設定機構１で設定された値に応じて上下に移
動し、印字用紙４の終了を検出する用紙検出機構２とか
ら構成される装置 紙検出位置との間隔ｌは用紙長設定機構１に設定された
値に応じて印字用紙４の１ページ当シの用紙長の整数倍
になるように変化する。用紙長設定機構１は、具体的に
は例えば、ダイヤル及びそのダイヤルに連動する機構を
用い、設定された用紙長の値に応じて回転するダイヤル
によって前記連動機構が作動して用紙検出機構２を上下
に変位させるか、あるい紘モーメ機構を用い、設定され
た数値に応答して作動するモータ機構により用紙検出機
構２を変位させる岬、種々の構成で容易に実現可能であ
る。FIG. 1 showing an embodiment of the present invention shows a portion of a printing device related to paper detection. In FIG.
and a paper detection mechanism 2 that moves up and down according to the value set by the paper length setting mechanism 1 and detects the end of the printing paper 4. The distance l between the paper detection position is determined by the paper length setting mechanism. In accordance with the value set to 1, the length changes to an integral multiple of the length of one page of the printing paper 4. Specifically, the paper length setting mechanism 1 uses, for example, a dial and a mechanism interlocked with the dial, and the interlocking mechanism is activated by the dial that rotates according to the set paper length value to detect the paper detection mechanism 2. The paper detection mechanism 2 can be easily realized in various configurations, such as by vertically displacing it, or by using a Hiromome mechanism and displacing the paper detection mechanism 2 by a motor mechanism that operates in response to a set numerical value.

印字装置によって印字用紙４に印字され、用紙検出機構
２によって印字用紙４の終了が検出された時には、用紙
検出位置と印字位置３との間隔ｌは印字用紙４の１ペー
ジ当シの用紙長の整数倍であるので、印字位置３には印
字用紙４０１ページの最終行が来ている．即ち、印字用
紙４の１ページの最終行まで印字したところで印字用紙
の終了が検出される。When the printing device prints on the printing paper 4 and the paper detection mechanism 2 detects the end of the printing paper 4, the distance l between the paper detection position and the printing position 3 is equal to the paper length of one page of the printing paper 4. Since it is an integral multiple, the last line of page 401 of print paper is at print position 3. That is, when the last line of one page of the printing paper 4 has been printed, the end of the printing paper is detected.

（６）　　発明の効果の説明 本発明には、以上説明したように、用紙検出位置と印字
位置との間隔が用紙長設定機構に設定された値によって
変動するように構成することにより、従来のように印字
用紙のページの途中で印字不可能になるということがま
くなる。(6) Description of effects of the invention As explained above, the present invention has a structure in which the interval between the paper detection position and the printing position varies depending on the value set in the paper length setting mechanism, thereby improving the conventional method. This prevents printing from becoming impossible in the middle of a page of printing paper.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図線本発明の一実施例を部分的に示し、印字装置の
用紙検出に関する部分を示す概略構成図である。 １、、、用紙長設定機構、２．、、用紙検出機構、３、
、、印字位置、４．、、印字用紙。 特許出願人　　　日本電気株式会社 代　理　人　　　弁理士　熊谷雄太郎FIG. 1 is a schematic configuration diagram partially showing an embodiment of the present invention and showing a portion related to paper detection of a printing device. 1. Paper length setting mechanism, 2. ,,paper detection mechanism,3,
,,Print position,4. ,, printing paper. Patent applicant: Representative of NEC Corporation Patent attorney: Yutaro Kumagai

Claims (1)

【特許請求の範囲】 印字装置等で使用される連続印字用紙の１ページ当シの
用紙長を設定する用紙長設定機構と、印字用紙が終了し
九ことを検出する用紙検出機構とから構成される装置 用紙検出機構の用紙検出位置との間隔が前記用紙長設定
機構に設定され九値に応じて変動することを特徴とする
用紙終了検出装置。[Scope of Claims] The present invention is comprised of a paper length setting mechanism that sets the length of one page of continuous printing paper used in a printing device, etc., and a paper detection mechanism that detects when the printing paper has ended. A paper end detection device, wherein an interval between a paper detection position of a paper detection mechanism and a paper detection position of the device is set in the paper length setting mechanism and varies according to a nine value.