JPH0315317U

JPH0315317U -

Info

Publication number: JPH0315317U
Application number: JP7696289U
Authority: JP
Priority date: 1989-06-28
Filing date: 1989-06-28
Publication date: 1991-02-15
Anticipated expiration: 2004-05-25
Also published as: JPH0619446Y2

Description

[Brief explanation of the drawing]

第１図はこの考案によるラベルプリンタの要部
となるセンサ付近を示す斜視図、第２図は同じく
そのラベルプリンタの主要な構成を示す概略構成
図、第３図は種々のラベル紙のラベルを検出する
際のセンサユニツトのセツト位置を説明するため
の斜視図、第４図は第２のセンサユニツトを第１
のセンサユニツト側に寄せて使用する場合につい
て説明するための概略構成図、第５図及び第６図
は従来のラベルを検出するセンサのそれぞれ異な
る例を示す斜視図、第７図は第５図のセンサを用
いたラベルプリンタの場合にピンホールを有する
ラベル紙を検出することができない理由を説明す
るための斜視図である。２……ラベル紙、２ａ……台紙、３……ラベル
、９……コ字部、９ｃ，９ｄ……ガイド孔、９ｅ
……Ｕ字部、１０……第１のセンサユニツト、１
３……ベース板（装置固定部）、１４……搬送ロ
ーラ対、１５……サーマルヘツド、１６……プラ
テン、１７……リボン送りロール、１８……リボ
ン巻取ロール、１９……リボン、２０……第２の
センサユニツト、２７，３６ｂ……受光素子、２
８，３６ａ……発光素子、３３，３５……フリク
シヨン板、３４……ネジ、３６……反射型フオト
センサ。 Fig. 1 is a perspective view showing the vicinity of the sensor which is the main part of the label printer according to this invention, Fig. 2 is a schematic configuration diagram showing the main structure of the label printer, and Fig. 3 is a diagram showing the main components of the label printer. A perspective view for explaining the set position of the sensor unit during detection, FIG.
5 and 6 are perspective views showing different examples of conventional sensors for detecting labels, and FIG. FIG. 2 is a perspective view for explaining the reason why label paper having pinholes cannot be detected in the case of a label printer using the above sensor. 2... Label paper, 2a... Mounting paper, 3... Label, 9... U-shaped portion, 9c, 9d... Guide hole, 9e
... U-shaped part, 10 ... First sensor unit, 1
3... Base plate (device fixing part), 14... Conveying roller pair, 15... Thermal head, 16... Platen, 17... Ribbon feed roll, 18... Ribbon winding roll, 19... Ribbon, 20 ... Second sensor unit, 27, 36b ... Light receiving element, 2
8, 36a... Light emitting element, 33, 35... Friction plate, 34... Screw, 36... Reflective photo sensor.

Claims

[Scope of Claim for Utility Model Registration] 1. A conveyance unit that conveys label paper with a label attached to a backing paper, a printing unit that prints at a predetermined position on the label, and a device upstream of the conveyance of the printing unit. In a label printer equipped with a sensor that detects the position of a label attached to a fixed part, the sensor is a transmissive type that has a light emitting element and a light receiving element arranged facing each other and detects the amount of transmitted light of the label paper passing between them. A first sensor unit equipped with a photo sensor, and a second sensor unit equipped with a reflective type photo sensor in which a light emitting element that irradiates light onto the label paper and a light receiving element that detects the amount of reflected light are arranged adjacent to each other. The first and second sensor units are individually movably engaged with guide holes formed in the device fixing part along a direction perpendicular to the conveying direction of the label paper, and A label printer characterized in that means is provided for fixing the first and second sensor units to the device fixing section at arbitrary movement positions. 2. The label printer according to claim 1, wherein the end of the guide hole on the side where the first sensor unit is attached is bent into a U-shape in a direction away from the label paper transport path. printer.