JPS6053746U

JPS6053746U - Detection device

Info

Publication number: JPS6053746U
Application number: JP14626983U
Authority: JP
Inventors: 渡辺　勝人; 山崎　博彦; 片倉　和人
Original assignee: コニカ株式会社
Priority date: 1983-09-21
Filing date: 1983-09-21
Publication date: 1985-04-16

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図イ９口、ハは従来のインクジェットプリンタの記
録紙給送要部の概略図、第２図は第１図のインクジェッ
ト記録ヘッドのノズル部分の拡大図、第３図から第６図
までは本考案の実施例を示すものであって、第３図は本
考案による検知装置ヲ組み入れたインクジェットプリン
タの全体概略図、第４図は第３図の検知装置に組み込ま
れている電気回路のブロック図、第５図は第４図のホー
ルド回路の電気回路図、第６図は第４図に示すコンパレ
ータ２６の入力、出力のタイムチャート、である。なお、図面に用いられている符号について、２・・・記
録紙、４，５．訃・・ガイド板、６・・・プラテンロー
ラ、７・・・下ローラ、９・・・上ローラ、１０・・・
インクジェット記録部、１６．１７・・・手差ガイド、
１９・・・単安定マルチバイブレーク、２１・・・反転
回路、２２・・・無安定マルチンくイブレータ、２３．
２４・・・ホールド回路、Ｓｌ、Ｓ２．Ｓ３・・・セン
サ、Ｓ４・・・透過型センサである。Figure 1 A9 and C are schematic diagrams of the recording paper feeding main parts of a conventional inkjet printer, Figure 2 is an enlarged view of the nozzle part of the inkjet recording head in Figure 1, and Figures 3 to 6. 3 shows an overall schematic diagram of an inkjet printer incorporating a detection device according to the invention, and FIG. 4 shows an electric circuit incorporated in the detection device of FIG. 3. 5 is an electric circuit diagram of the hold circuit shown in FIG. 4, and FIG. 6 is a time chart of input and output of the comparator 26 shown in FIG. 4. Regarding the symbols used in the drawings, 2... recording paper, 4, 5... ...Guide plate, 6...Platen roller, 7...Lower roller, 9...Upper roller, 10...
Inkjet recording section, 16.17...Manual guide,
19... Monostable multi-bi break, 21... Inversion circuit, 22... Astable multi-vibrator, 23.
24...Hold circuit, Sl, S2. S3...sensor, S4...transmission type sensor.

Claims

[Scope of utility model registration request]

In a detection device that detects a conveyance state of a conveyed object, a detection section is provided in a conveyance path of the conveyed object, and an output of the detection section when a front end of the conveyed object passes through the detection section is a reference. This reference output is compared with the output of the detection section when the portion of the transported object on the rear side of the front end portion passes through the detection section, and based on this comparison, the transport state of the transported object is determined. A detection device characterized by detecting.