JPH0452167A - Printer device - Google Patents

Printer device

Info

Publication number
JPH0452167A
JPH0452167A JP15971890A JP15971890A JPH0452167A JP H0452167 A JPH0452167 A JP H0452167A JP 15971890 A JP15971890 A JP 15971890A JP 15971890 A JP15971890 A JP 15971890A JP H0452167 A JPH0452167 A JP H0452167A
Authority
JP
Japan
Prior art keywords
printer
host system
battery
external character
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15971890A
Other languages
Japanese (ja)
Inventor
Takashi Tsunehiro
隆司 常広
Kunihiro Katayama
国弘 片山
Koichi Nakatani
公一 中谷
Kenichi Kaki
健一 柿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15971890A priority Critical patent/JPH0452167A/en
Publication of JPH0452167A publication Critical patent/JPH0452167A/en
Pending legal-status Critical Current

Links

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)
  • Record Information Processing For Printing (AREA)

Abstract

PURPOSE:To make it unnecessary to transfer an external character font over again from a host system to a printer when the printer is switched on again after cutting off of electric current by a method wherein an external character RAM is made capable of being supplied with electric current also from a battery in the host system. CONSTITUTION:A battery 2 is incorporated in a host system 1 in which a CPU 3, a memory 4, a peripheral circuit 5 and others are provided. The host system 1 transfers an assemblage of characters that is peculiar to a certain user to an external character RAM 12 in a printer 6 so that the printing for this user can be operated. A DC current is supplied from a power source 13 to the entire body of the printer 6. The external character RAM 12 is supplied with the DC current from the battery 2 in the host system 1 in parallel with the DC current from the power source 13. Reverse flow of the electric current from the printer 6 to the host system 1 is checked with a diode 16. Therefore, because of the voltage applied to the external character RAM 12 from the battery 2 in the host system 1, an external character font does not volatilize even in the case where electric supply from the power source in the printer 6 is cut off while the system is in operation.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明はパソコンやワードプロセッサなどの情報処理装
置で使用するプリンタ装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer device used in an information processing device such as a personal computer or a word processor.

［従来の技術］ 従来からプリンタでは、ホストシステム固有の字体を印
字するために印字フォントの一部を内雇のＲＡＭにホス
トシステムから転送して格納する方式をとっていた。こ
のようなＲＡＭを外字ＲＡＭ、フォントを外字フォント
と呼んでいる。これらのプリンタ電源はＡＣｌｏｏＶを
使用しており、電源切断時には転送した外字フォントは
揮発していた。[Prior Art] Conventionally, printers have adopted a method in which a part of the print font is transferred from the host system to an internal RAM and stored in order to print a font unique to the host system. Such a RAM is called a custom character RAM, and the font is called a custom character font. AClooV was used as the power source for these printers, and the transferred external character fonts were volatile when the power was turned off.

［発明が解決しようとする課題］ 上記従来技術では、電源切断のたびに外字フォントが外
字ＲＡＭ上から消えてしまうため、電源投入時にホスト
システムから、再度、外字フォントを外字ＲＡＭへ転送
し直さなければならないという問題があった。[Problems to be Solved by the Invention] In the above-mentioned conventional technology, the private character font disappears from the private character RAM every time the power is turned off, so the private character font must be transferred again from the host system to the private character RAM when the power is turned on. There was a problem that it had to be done.

本発明の目的は、プリンタ電源の切断投入を繰り返して
も、そのたびに外字フォントの転送を行わなくてもよい
システムを提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a system that does not require transferring external character fonts every time the printer power is repeatedly turned off and on.

［課題を解決するための手段〕 上記目的を達成するために１本発明は外字ＲＡＭへの電
流はホストシステム内のバッテリ電源からも供給できる
ようにしておく、プリンタ電源が投入されているときは
プリンタ側のＡＣ電源から供給され、プリンタ電源が切
断されているときはホストシステムのバッテリから供給
できるようにしておく。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a method in which current to the external character RAM can also be supplied from the battery power supply in the host system, and when the printer power is turned on. The AC power is supplied from the printer side, and when the printer power is turned off, the power can be supplied from the battery of the host system.

また、プリンタ電源が投入されている間は電流がホスト
側へ逆流しないように逆流防止回路を設けておく。Further, a backflow prevention circuit is provided to prevent current from flowing back to the host side while the printer is powered on.

［作用］ プリンタ電源が切断されていても外字ＲＡＭへの電流は
ホストシステムのバッテリから供給できるので内部に記
憶している外字フォントは揮発しない、そのため、再度
、プリンタの電源を投入したときにも外字フォントをホ
ストシステムから転送しなおす必要はない。[Function] Even if the printer power is turned off, the current to the external character RAM can be supplied from the battery of the host system, so the internally stored external character fonts will not volatilize.Therefore, even when the printer is turned on again, the external character fonts will not volatilize. There is no need to transfer external character fonts back from the host system.

［実施例］ 以下、本発明の一実施例を第１図により説明する。[Example] An embodiment of the present invention will be described below with reference to FIG.

中央処理装置３、メモリ４、周辺回路５などを持つホス
トシステム１はバッテリ２を内蔵している。ホストシス
テム１はプリンタ装！６へ文字を出力するとき、プリン
タポート７を介してデータを転送する。プリンタ装置６
はホストボート８を介してデータを受は取る。このとき
、ケーブル１４を介してデータを転送する。プリンタ装
置６の内部にもＣＰＵ９があり、データの授受、機構部
１ｏの制御などを行っている。これらの制御を行うため
のソフトウェアはＲＯＭＩＩに格納されている。また、
通常の文字フォントもＲＯＭＩＩに格納されている。ユ
ーザ固有の字体を印字するために、ホストシステム１は
プリンタ装置６内部の外字ＲＡＭ１２へ転送しておく、
プリンタ装置６の全体には電源装置ｆ１３によりＤＣ電
流が供給されている。外字ＲＡＭ１２は電源装置１３か
らのＤＣ電流と、ホストシステム１内部のバッテリ２か
ら供給されるＤＣ電流の二つから並行して電流を供給で
きるようにしである。このＤＣ電流はケーブル１５で供
給する。このとき、ダイオード１６により、プリンタ装
置６からホストシステム１へ電流が逆流することを防止
する。A host system 1 having a central processing unit 3, a memory 4, a peripheral circuit 5, etc. has a built-in battery 2. Host system 1 is equipped with a printer! When outputting characters to 6, the data is transferred via printer port 7. Printer device 6
receives and receives data via the host boat 8. At this time, data is transferred via the cable 14. There is also a CPU 9 inside the printer device 6, which sends and receives data, controls the mechanism section 1o, and the like. Software for performing these controls is stored in ROMII. Also,
Normal character fonts are also stored in ROMII. In order to print a user-specific font, the host system 1 transfers it to the external character RAM 12 inside the printer device 6.
DC current is supplied to the entire printer device 6 by a power supply device f13. The external character RAM 12 is configured to be able to supply current in parallel from two sources: the DC current from the power supply 13 and the DC current supplied from the battery 2 inside the host system 1. This DC current is supplied by cable 15. At this time, the diode 16 prevents current from flowing backward from the printer device 6 to the host system 1.

以上のような構成で、システムが稼働しているとき、プ
リンタ装置６の電源を切断したとしても、外字ＲＡＭに
はホストシステム１から電圧が印加されているので外字
フォントが揮発することはない。With the above configuration, even if the printer device 6 is powered off while the system is operating, the external character font will not volatilize because voltage is applied to the external character RAM from the host system 1.

第２図は本発明の第二の実施例を示す、第１図との違い
はダイオード１６をプリンタ装置６でなく、ホストシス
テム１偏に持ったことである。こうしても全体としての
効果は同じである。FIG. 2 shows a second embodiment of the present invention. The difference from FIG. 1 is that the diode 16 is provided not in the printer device 6 but in the host system 1. Even in this case, the overall effect is the same.

［発明の効果］ 本発明によれば、プリンタ装置がユーザ固有の外字フォ
ントを格納する外字ＲＡＭを持っているときにプリンタ
装置の電源を遮断しても外字フォントデータを保存して
おくことができる。[Effects of the Invention] According to the present invention, when the printer device has a custom character RAM that stores user-specific custom character fonts, the custom character font data can be saved even if the power to the printer device is cut off. .

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

第１図は本発明の一実施例のブロック図、第２図は本発
明の第二の実施例のブロック図を示す。 １・・・ホストシステム。 ２・・・バッテリ、 ３・・・ＣＰＵ。 ４・・・メモリ、 ６・・・プリンタ装置。 １２・・・外字ＲＡＭ、 １３・・・電源、 １６・・・ダイオード。FIG. 1 shows a block diagram of one embodiment of the invention, and FIG. 2 shows a block diagram of a second embodiment of the invention. 1...Host system. 2...Battery, 3...CPU. 4...Memory, 6...Printer device. 12... External character RAM, 13... Power supply, 16... Diode.

Claims (1)

【特許請求の範囲】[Claims] １、少なくとも、中央処理装置、メモリ、周辺回路から
なる情報処理装置と、前記情報処理装置の出力結果を印
字するプリンタ装置において、前記情報処理装置の内部
にバッテリと、前記バッテリの出力を前記プリンタへ接
続するケーブルと、前記バッテリの出力電流が逆流しな
いようした逆流防止回路と、前記バッテリの出力と通常
のＡＣ電源の出力のどちらからでも並行して供給できる
ようにした外字ＲＡＭをプリンタ内部に設けたことを特
徴とするプリンタ装置。1. An information processing device consisting of at least a central processing unit, a memory, and a peripheral circuit, and a printer device that prints output results of the information processing device, including a battery inside the information processing device, and a battery that outputs the output of the battery to the printer. A cable connected to the printer, a backflow prevention circuit that prevents the output current of the battery from flowing backwards, and an external RAM that can be supplied in parallel from either the battery output or the normal AC power output are installed inside the printer. A printer device characterized by:
JP15971890A 1990-06-20 1990-06-20 Printer device Pending JPH0452167A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15971890A JPH0452167A (en) 1990-06-20 1990-06-20 Printer device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15971890A JPH0452167A (en) 1990-06-20 1990-06-20 Printer device

Publications (1)

Publication Number Publication Date
JPH0452167A true JPH0452167A (en) 1992-02-20

Family

ID=15699765

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15971890A Pending JPH0452167A (en) 1990-06-20 1990-06-20 Printer device

Country Status (1)

Country Link
JP (1) JPH0452167A (en)

Similar Documents

Publication Publication Date Title
ES2142549T3 (en) HYBRID TYPE INK PRINTER PRINTER.
JPH0452167A (en) Printer device
US4951235A (en) Option unit detecting apparatus for electronic equipment
JPS622323B2 (en)
JPS6056638B2 (en) Electronic equipment with printer
KR0170622B1 (en) Power-off device of a printer using computer system
JPS6243715A (en) Information processing system
JPH01264881A (en) Portable printer
JPS58112417A (en) Power source control system
JP2517974B2 (en) Document processing device capable of IC card connection
JPS63193874A (en) Power supply control circuit in printer
KR900000208A (en) Spacing method of electronic typewriter
JPS5760469A (en) External memory control system of document preparing device
JPH06297817A (en) Printer
JPH06230905A (en) Portable printer
JPS61254375A (en) Printer
JPH0238076A (en) Printer device
JPS63168711A (en) Protective system for data
JPH01190473A (en) Printing device
JPH05162424A (en) Printing control device
JPH07261894A (en) Computer system
JPH01264882A (en) Printer
JPS62169669A (en) Thermal transfer serial printer
JPH08115296A (en) Portable terminal equipment with printer
KR890014271A (en) Computer-typed data memory device of electronic typewriter