JPH0381179A

JPH0381179A - Printer

Info

Publication number: JPH0381179A
Application number: JP21892189A
Authority: JP
Inventors: Akihiko Yamanobe; 山野邉　暁彦
Original assignee: NEC Corp
Current assignee: NEC Corp
Priority date: 1989-08-24
Filing date: 1989-08-24
Publication date: 1991-04-05

Abstract

PURPOSE:To apply printing to the present paper without reserving the data received from a higher rank apparatus by receiving the data until the exhaustion of paper is detected while said data is developed on an image buffer. CONSTITUTION:A control part 1 is connected to a printing mechanism 3 and an image buffer 5 through bus lines 10, 11 and a paper detection mechanism 2 is connected to the control part 1 in order to detect the presence of paper 4. Herein, the image buffer 5 has capacity capable of developing the dot image data corresponding to the data printed on the paper from the present printing position to a paper exhaustion detecting position and receives data from a higher rank apparatus until the exhaustion of the paper is detected by the paper detection mechanism 2 and the data developed on the image buffer 5 is printed on the present paper.

Description

【発明の詳細な説明】〔産業上の利用分野〕本発明は連続帳票に印字するプリンタに関し、特に上位
装置より与えられたデータをドツト情報に展開し、印字
を行うプリンタに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer that prints on continuous forms, and more particularly to a printer that converts data given from a host device into dot information and prints the data.

[Conventional technology]

従来、この種のプリンタは桟用紙長以上のデータを上位
装置より受信した場合、印字できなかったデータはプリ
ンタ内に用紙再設定時まで保留する等の処置が必要であ
った。Conventionally, when this type of printer receives data that is longer than the frame paper length from a host device, it has been necessary to take measures such as holding the data that could not be printed in the printer until the paper is reset.

[Problem to be solved by the invention]

従って、従来のプリンタに於ては、上位装置より受信し
たデータが未印字状態となっている事があり、上位装置
側にて、データが全て印字完了したか分らない場合があ
った。Therefore, in conventional printers, the data received from the host device may be in an unprinted state, and the host device may not know whether all the data has been printed.

[Means to solve the problem]

本発明のプリンタは現印字位置から、用紙切れ検出位置
までの用紙上に印字される各行の文字列に対応するドツ
トイメージ情報が展開できるだけの容量のイメージバッ
ファを有している。The printer of the present invention has an image buffer with a capacity large enough to develop dot image information corresponding to each line of character string printed on the paper from the current printing position to the paper out detection position.

〔Example〕

次に、本発明の一実施例について図面を参照して説明す
る。Next, an embodiment of the present invention will be described with reference to the drawings.

第１図は本発明の一実施例の機能ブロック図である。第
１図において、制御部１はバス線１０および１１により
印字機構３とイメージバッファ５に接続され、また、用
紙の有無を検出するために用紙検出機構２が接続されて
いる。ここにおいてイメージバッファ５は現印字位置よ
り、用紙切れ検出位置までの用紙上印字されデータに対
応するドツトイメージ情報が展開できるだけの容量を有
しており、用紙検出機構２が用紙切れを検出するまでに
上位装置より受信し、イメージバッファ５への展開が行
われたデータは現用紙上に印字される。FIG. 1 is a functional block diagram of an embodiment of the present invention. In FIG. 1, a control unit 1 is connected to a printing mechanism 3 and an image buffer 5 by bus lines 10 and 11, and is also connected to a paper detection mechanism 2 for detecting the presence or absence of paper. Here, the image buffer 5 has a capacity sufficient to develop dot image information corresponding to the data printed on the paper from the current printing position to the paper out detection position, until the paper detection mechanism 2 detects the paper out. The data received from the host device and expanded into the image buffer 5 is printed on the current paper.

〔Effect of the invention〕

以上説明したように本発明は、現印字位置より、用紙切
れ検知位置までの用紙上に印字される文字列に対応する
ドツトイメージ情報が展開できるだけの容量のイメージ
バッファを有し、用紙切れを検知するまでのデータを前
記イメージバッファに展開しつつ受信することにより、
上位装置より受信したデータを、保留することなく、現
用紙上に印字できる効果がある。As explained above, the present invention has an image buffer with a capacity large enough to develop dot image information corresponding to the character string printed on the paper from the current printing position to the paper out detection position, and detects paper out. By receiving the data while developing it in the image buffer,
This has the effect that the data received from the host device can be printed on the current paper without being put on hold.

[Brief explanation of drawings]

第１図は本発明の一実施例を示す機能ブロック図である
。１・・・制御部、２・・・用紙検出機構、３・・・印字
機構、４・・・用紙、５・・・イメージバッファ、１０
，１１・・・バス線。FIG. 1 is a functional block diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Control part, 2... Paper detection mechanism, 3... Printing mechanism, 4... Paper, 5... Image buffer, 10
, 11... bus line.

Claims

[Claims]

It has an image buffer with a capacity large enough to develop dot image information corresponding to each line of character string printed on the paper from the current printing position to the paper out detection position, and data received from the host device is sequentially stored in the image buffer. Printing is carried out while the data is being expanded, and when it detects that paper is out, data reception from the host device is stopped. After the received data is printed on the paper, the paper is replaced, and the subsequent data is printed when it becomes possible to print. A printer characterized in that it receives information from a host device.