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JPH0353951A - Electrophotographic printer - Google Patents

Electrophotographic printer

Info

Publication number
JPH0353951A
JPH0353951A JP1189503A JP18950389A JPH0353951A JP H0353951 A JPH0353951 A JP H0353951A JP 1189503 A JP1189503 A JP 1189503A JP 18950389 A JP18950389 A JP 18950389A JP H0353951 A JPH0353951 A JP H0353951A
Authority
JP
Japan
Prior art keywords
turned
dots
line
numbered dots
odd
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
JP1189503A
Other languages
Japanese (ja)
Inventor
Toshinori Tamura
田村 敏則
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.)
Niigata Fuji Xerox Manufacturing Co Ltd
Original Assignee
Niigata Fuji Xerox Manufacturing Co 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 Niigata Fuji Xerox Manufacturing Co Ltd filed Critical Niigata Fuji Xerox Manufacturing Co Ltd
Priority to JP1189503A priority Critical patent/JPH0353951A/en
Publication of JPH0353951A publication Critical patent/JPH0353951A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dot-Matrix Printers And Others (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To reduce the consumption of a toner by a latent image forming method wherein, in an exposure process, only odd-numbered dots can be turned ON/OFF and even-numbered dots are all turned OFF in the dot train of the first line, and only even-numbered dots can be turned ON/OFF and odd- numbered dots are all turned OFF in the dot train of the second line. CONSTITUTION:A white circle 1 represents a dot in an exposure OFF state, and a black circle 2 represents a dot in an exposure ON state. In the first line, odd-numbered dots can be turned ON/OFF correspondingly to an image, and even-numbered dots are all turned OFF independently of the image. In the second line, even-numbered dots can be turned ON/OFF correspondingly to the image, and odd-numbered dots are all turned OFF independently of the image. In the succeeding lines, the aforesaid processing is repeated to form a latent image. Therefore, without deteriorating the image to a great extent, the number of dots to be exposed to light can be reduced to approximately one half of that in a latent image forming method in which all dots of the dot train of a line can be turned ON/OFF. Thus, the consumption of a toner can be reduced.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電子写真7リンタに関する。[Detailed description of the invention] [Industrial application field] The present invention relates to an electrophotographic 7 printer.

〔従来の技術〕[Conventional technology]

従来の電子写真プリンタは、印字する全てのドットを露
光オン,オフ可能とし、mlイメージを作成していた. 〔発明が解決しようとする課題〕 −E述した従来の電子写真プリンタは、印字する企トッ
トを露光オン,オフ可能としている2.b.k字を横成
する全てのドットが露光され、露光されたドット全てに
トナーが付着し、試し印字などの場合でもトナーを老く
消費してしまう欠点がある。
Conventional electrophotographic printers create ml images by allowing exposure to be turned on and off for all dots printed. [Problems to be Solved by the Invention] - The conventional electrophotographic printer mentioned above is capable of turning on and off the exposure of the dots to be printed.2. b. All the dots forming the K-shape are exposed, toner adheres to all the exposed dots, and the toner is consumed even in the case of trial printing.

〔課Mf解決する゛ための手段〕[Means to solve section Mf]

本発明の電子写真プリンタは、その露光において、最初
の1ライン目はドット列の奇数番目のドットのみオン,
オフ可能とし偶数番目のドットは全てオフとして露光し
、2ライン目はドット列の偶数番目のドットのみオン,
オフ0T能とし奇数番目のドットは全てオフとして露光
し、次のラインからは上記の繰返しを行なって潜像イメ
ージを作成するモードを有している. 〔実施例〕 次に本発明について図面を参照して説明する。
During exposure, the electrophotographic printer of the present invention turns on only the odd-numbered dots in the dot row for the first line.
It is possible to turn off, and all even numbered dots are exposed as off, and for the second line, only the even numbered dots in the dot row are on.
It has a mode in which all odd-numbered dots are exposed as off-0T, and the above process is repeated from the next line to create a latent image. [Example] Next, the present invention will be described with reference to the drawings.

第1図は本発明の一実施例の潜像イメージで、第2図は
実施する前の潜像イメーシである。白まる1は露光オフ
のトットて黒まる2は露光オンのドットで、第■図にお
いて1ライン目では奇数番口のドッ1・(iイメージに
対応してオン,オフ可能で偶数番目のトットはイメージ
に関係せず全てオフてある。2ライン目では偶数番目の
ドットはイメージに対応してオン,オフ可能て奇数番目
のトットはイメージに関係せずに全てオフである。
FIG. 1 is a latent image of an embodiment of the present invention, and FIG. 2 is a latent image before implementation. The white dots 1 are exposure-off dots, and the black dots 2 are exposure-on dots. are all off regardless of the image.On the second line, even-numbered dots can be turned on and off in accordance with the image, and all odd-numbered dots are off regardless of the image.

次のラインからは上記の繰返しを行なって第1図のよう
な潜像イメージを作成する。
From the next line, the above steps are repeated to create a latent image as shown in FIG.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、露光において最初の1ラ
イン目はドット列の奇数番目のドットのみオン,オフ可
能とし、偶数番目のドットは全てオフとして露光し、2
ライン目はトット列の偶数番目のドットのみオン,オフ
可能とし、奇数番目のドットは全てオフとして露光し、
次のラインからは上記の繰返しを行なって潜像イメージ
を作戒することにより、ラインのトット列の全てのトツ
トをオン,オフ可能として潜像イメーシを作成する場合
より、そのイメーシを大幅に崩すことなく露光ドットを
約半分に減らずことかできトナーの消費量を削減するこ
とかできる効果かある。
As explained above, in the present invention, in the first line of exposure, only the odd-numbered dots in the dot row can be turned on or off, all the even-numbered dots are exposed as off, and the second
For the line, only the even-numbered dots in the dot row can be turned on or off, and all the odd-numbered dots are exposed as off.
From the next line onwards, by repeating the above steps to improve the latent image, the image will be much more distorted than if the latent image was created by allowing all the tots in the line's dot row to be turned on and off. It is possible to reduce the number of exposed dots by about half without reducing toner consumption.

【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潜像イメーシ国、第2図は
本発明の実施前の潜像イメーシ図である。 1・・・露光オフのトット、2 ・露光オンの1ヘット
FIG. 1 is a latent image diagram according to an embodiment of the present invention, and FIG. 2 is a latent image diagram before implementation of the present invention. 1... Tot with exposure off, 2 - 1 head with exposure on.

Claims (1)

【特許請求の範囲】[Claims] 電子写真プリンタの露光において、最初の1ライン目は
ドット列の奇数番目のドットのみオン、オフ可能とし偶
数番目のドットは全てオフとして露光し、2ライン目は
ドット列の偶数番目のドットのみオン、オフ可能とし奇
数番目のドットは全てオフとして露光し、次のラインか
らは上位の繰返しを行なって潜像イメージを作成するモ
ードを有することを特徴とする電子写真プリンタ。
In the exposure of an electrophotographic printer, in the first line, only the odd numbered dots in the dot row can be turned on or off, all the even numbered dots are turned off, and in the second line, only the even numbered dots in the dot row are turned on. , an electrophotographic printer characterized in that it has a mode in which all odd-numbered dots are exposed as off, and a latent image is created by repeating the upper order from the next line.
JP1189503A 1989-07-21 1989-07-21 Electrophotographic printer Pending JPH0353951A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1189503A JPH0353951A (en) 1989-07-21 1989-07-21 Electrophotographic printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1189503A JPH0353951A (en) 1989-07-21 1989-07-21 Electrophotographic printer

Publications (1)

Publication Number Publication Date
JPH0353951A true JPH0353951A (en) 1991-03-07

Family

ID=16242362

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1189503A Pending JPH0353951A (en) 1989-07-21 1989-07-21 Electrophotographic printer

Country Status (1)

Country Link
JP (1) JPH0353951A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7880932B2 (en) 2005-02-22 2011-02-01 Fuji Xerox Co., Ltd. Halftone dot formation method and apparatus for reducing layer thickness of coloring material inside halftone dots, and image formation apparatus
US7973972B2 (en) 2005-02-22 2011-07-05 Fuji Xerox Co., Ltd. Halftone dot formation method and apparatus, and image forming apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7880932B2 (en) 2005-02-22 2011-02-01 Fuji Xerox Co., Ltd. Halftone dot formation method and apparatus for reducing layer thickness of coloring material inside halftone dots, and image formation apparatus
US7973972B2 (en) 2005-02-22 2011-07-05 Fuji Xerox Co., Ltd. Halftone dot formation method and apparatus, and image forming apparatus
US8610956B2 (en) 2005-02-22 2013-12-17 Fuji Xerox Co., Ltd. Halftone dot formation method and apparatus, and image forming apparatus

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