JPH05345452A - Print control system - Google Patents

Abstract

PURPOSE:To make it possible to stack printed papers by arranging them in the same direction even when one-sided printing and perfecting printing are mixed, in a cut paper printing device. CONSTITUTION:In the case of one-sided printing, papers 21 from a paper feeder 11 pass through a printing section consisting of a photosensitive drum 14, an optical section 13, a developing section 15, a transfer section 16, and a fixing section 17, and are stacked in a stacker 18 immediately. In the case of perfecting printing, the papers whose one sides are printed pass the printing section again through a reversing section 1A without being stacked, so as to be printed on other faces. The papers whose both faces are printed are sent to the printing section again through the reversing section 1A, thereafter, blank information is printed and are put in the stacker 18. Thus, the papers of one-sided printing and perfecting printing can be stacked in a state that the directions of both papers are arranged in the same direction.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、片面印刷、両面印刷の
両者を混在して扱うことのできるカット紙印刷装置の印
刷制御方式に係り、特に、印刷済用紙のスタック方向を
片面印刷、両面印刷にかかわらず統一することのできる
印刷制御方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a print control system for a cut sheet printing apparatus which can handle both single-sided printing and double-sided printing in a mixed manner. The present invention relates to a print control method that can be unified regardless of printing.

【０００２】[0002]

【従来の技術】ＬＢＰ等の印刷装置に関する従来技術と
して、例えば、特開昭５９−７９７８１号公報等に記載
された技術が知られている。2. Description of the Related Art As a conventional technique relating to a printing apparatus such as an LBP, for example, a technique described in JP-A-59-79781 is known.

【０００３】この従来技術は、カット紙に片面印刷及び
両面印刷の両方を行うために、印刷部を通過後の用紙を
裏返し再度同一印刷部を通過させる機構を備えるもので
あるが、片面印刷及び両面印刷の両方を混在して行った
場合の、印刷済用紙のスタック方向を揃える点について
配慮されていない。This prior art is provided with a mechanism for reversing the sheet after passing through the printing unit and passing through the same printing unit again for performing both single-sided printing and double-sided printing on a cut sheet. No consideration is given to aligning the stacking direction of the printed paper when performing both-sided printing.

【０００４】[0004]

【発明が解決しようとする課題】前記従来技術は、片面
印刷と両面印刷とを混在して行った場合に、印刷済みの
用紙が同一方向にスタックされず、その後の用紙の取り
扱いを悪くするという問題点を有している。In the prior art, when single-sided printing and double-sided printing are performed in a mixed manner, the printed sheets are not stacked in the same direction, and the subsequent handling of the sheets becomes poor. I have a problem.

【０００５】また、このような問題点を解決して、片面
印刷と両面印刷とを混在して行った場合にも、スタック
される用紙の向きを揃えるために特別の用紙搬送パスを
備える技術も知られているが、この場合、装置が大型に
なってしまうという問題点を生じさせる。Further, there is also a technique of solving such a problem and providing a special sheet conveying path for aligning the directions of stacked sheets even when single-sided printing and double-sided printing are performed in a mixed manner. As is known, this causes a problem that the device becomes large.

【０００６】本発明の目的は、前記従来技術の問題点を
解決し、片面印刷と両面印刷とを混在して行った場合に
も、印刷済みの用紙を同一方向にスタックさせることの
できる、特別の用紙搬送パスの不用な印刷制御方式を提
供することにある。An object of the present invention is to solve the above-mentioned problems of the prior art and to enable printed sheets to be stacked in the same direction even when single-sided printing and double-sided printing are performed in a mixed manner. Another object of the present invention is to provide an unnecessary print control method for the paper transport path.

【０００７】[0007]

【課題を解決するための手段】本発明によれば前記目的
は、両面印刷を行うことにより、用紙スタック方向が、
片面印刷と両面印刷で逆転することを利用し、片面印刷
時の用紙が、印刷プロセスを通過する回数と両面印刷時
の用紙が印刷プロセスを通過する回数の差を零回または
偶数回に制御するようにすることにより達成される。According to the present invention, the above-described object is to perform double-sided printing so that the paper stack direction is
Utilizing the reversal of single-sided printing and double-sided printing, the difference between the number of times the paper passes through the printing process during simplex printing and the number of times the paper passes through the printing process during double-sided printing is controlled to be zero or even It is achieved by doing so.

【０００８】[0008]

【作用】両面印刷用の帰還路は、用紙が１回通過する度
に、用紙を裏返しかつ紙送り方向の前後を逆転する作用
がある。片面印刷、両面印刷のスタック方向に違いが発
生する理由はここにある。The return path for double-sided printing has the function of turning over the paper and reversing the front and back of the paper feed direction each time the paper passes once. This is the reason why there is a difference in the stack direction between single-sided printing and double-sided printing.

【０００９】本発明は、この性質を利用し、この両面印
刷用の帰還路パスを通す回数を、片面印刷時と両面印刷
時とで同一となるように揃えるか、両面印刷時のみこの
パスを偶数回通すようにすることにより、印刷済みの用
紙のスタック方向を揃えることができる。The present invention takes advantage of this property and arranges the number of times of passing through the return path for double-sided printing to be the same for single-sided printing and double-sided printing, or only for double-sided printing. By passing the sheets evenly, it is possible to align the stacking direction of the printed sheets.

【００１０】本発明は、これにより、印刷後の工程での
用紙の取り扱い性の向上を図ることができる。According to the present invention, it is possible to improve the handling of the paper in the steps after printing.

【００１１】[0011]

【実施例】以下、本発明による両面印刷制御方式の一実
施例を図面により詳細に説明する。 図１は本発明の一
実施例の構成と片面印刷時の用紙の流れを説明する図、
図２は両面印刷時の用紙の流れを説明する図である。図
１、図２において、１１は用紙フィーダ、１２、１９は
選択部、１３は光学部、１４は感光ドラム、１５は現像
部、１６は転写部、１７は定着部、１８はスタッカ部、
１Ａは反転部である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a double-sided printing control system according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a diagram for explaining the configuration of an embodiment of the present invention and the flow of paper during simplex printing,
FIG. 2 is a diagram for explaining the flow of sheets during double-sided printing. In FIGS. 1 and 2, 11 is a paper feeder, 12 and 19 are selection units, 13 is an optical unit, 14 is a photosensitive drum, 15 is a developing unit, 16 is a transfer unit, 17 is a fixing unit, 18 is a stacker unit,
1A is an inversion unit.

【００１２】図１、図２に示す本発明の一実施例は、本
発明の説明に必要な用紙搬送経路についてのみ簡略化し
て示したものであり、片面印刷、両面印刷共に扱うた
め、印刷部を通過後の用紙を裏返し再度同一印刷部を通
過させる機構を備える。The embodiment of the present invention shown in FIGS. 1 and 2 is a simplified illustration of only the paper transport path necessary for explaining the present invention. Since both single-sided printing and double-sided printing are handled, the printing unit It is equipped with a mechanism that turns over the sheet after passing through the sheet and passes through the same printing unit again.

【００１３】そして、本発明の一実施例による印刷装置
は、図１、図２に示すように、印刷に使用する用紙を格
納し装置動作に合わせて用紙を供給する用紙フィーダ１
１と、用紙フィーダ１１方向からの用紙が、両面印刷用
の帰還用紙であるか、用紙フィーダ１１から供給された
用紙であるかにより、これらの用紙を選択する選択部１
２と、感光ドラム１４と、感光ドラム１４に潜像を作成
する光学部１３と、感光ドラム１４上の潜像にトナーで
像を作る現像部１５と、この像を用紙に転写する転写部
１６と、用紙に転写された像を用紙に定着させる定着部
１７と、印刷済用紙を格納する用紙スタッカ部１８と、
両面印刷用紙帰還路に用紙を振り分ける選択部１９と、
用紙の表裏を反転するために帰還路に設けられた反転部
１Ａとを備えて構成されている。As shown in FIGS. 1 and 2, the printing apparatus according to the embodiment of the present invention stores paper used for printing and supplies the paper according to the operation of the paper feeder 1.
1 and the paper from the paper feeder 11 direction is a return paper for double-sided printing or a paper supplied from the paper feeder 11, a selection unit 1 for selecting these papers.
2, a photosensitive drum 14, an optical unit 13 that forms a latent image on the photosensitive drum 14, a developing unit 15 that forms an image with toner on the latent image on the photosensitive drum 14, and a transfer unit 16 that transfers this image onto paper. A fixing unit 17 for fixing the image transferred on the paper to the paper; a paper stacker unit 18 for storing printed paper;
A selection section 19 for allocating the paper to the double-sided printing paper return path,
It is provided with a reversing unit 1A provided in the return path for reversing the front and back of the sheet.

【００１４】次に、前述のように構成される本発明の実
施例において、片面印刷時の用紙の搬送について、図１
を参照して説明する。Next, in the embodiment of the present invention configured as described above, as to the conveyance of the sheet at the time of single-sided printing, FIG.
Will be described.

【００１５】図１に示すように、片面印刷時、用紙フィ
ーダ１１より供給される用紙１Ｂは、選択部１２から、
感光ドラム１４、光学部１３、現像部１５、転写部１６
により構成される印刷部の方向に取り込まれ、光学部１
３、現像部１５により感光ドラム１４上に形成された像
が転写部１６で転写された後、定着部１７で像が定着さ
れて、選択部１９で用紙スタッカ部１８へ導かれ、用紙
スタッカ部１８に格納される。As shown in FIG. 1, the paper 1B supplied from the paper feeder 11 at the time of one-sided printing,
Photosensitive drum 14, optical unit 13, developing unit 15, transfer unit 16
Is taken in the direction of the printing unit constituted by
3. After the image formed on the photosensitive drum 14 by the developing unit 15 is transferred by the transfer unit 16, the image is fixed by the fixing unit 17 and guided to the paper stacker unit 18 by the selecting unit 19 and the paper stacker unit 18 is stored.

【００１６】なお、図１、図２には、用紙の方向を三角
形で示して、用紙の方向が判るようにされている。1 and 2, the paper direction is shown by a triangle so that the paper direction can be understood.

【００１７】次に、両面印刷時の動作を図２を参照して
説明する。Next, the operation during double-sided printing will be described with reference to FIG.

【００１８】図２に示すように、用紙フィーダ１１より
供給される用紙２１は、片面印刷時と同様に、選択部１
２より印刷プロセス方向に取り込まれ、光学部１３、現
像部１５により感光ドラム１４上に形成された像が転写
部１６で転写された後、定着部１７で像が定着される。As shown in FIG. 2, the paper 21 supplied from the paper feeder 11 is the same as in single-sided printing, and the selection unit 1
The image formed on the photosensitive drum 14 by the optical unit 13 and the developing unit 15 is transferred from the transfer unit 16 by the transfer unit 16 and then fixed by the fixing unit 17.

【００１９】その後、この表面側の片面に印刷が行われ
た用紙は、選択部１９により両面印刷用紙帰還路へ導か
れ（用紙位置２２）、反転部１Ａに至りここで表裏反転
後、選択部１２に運ばれる（用紙位置２３、２４）。選
択部１２に運ばれた用紙は、選択部１２が両面印刷用紙
帰還路を選択することにより転写部１６へ送られ、表面
同様に感光ドラム１４上に作成された裏面の像が転写さ
れ、定着部１７で定着され両面に印刷される。After that, the sheet on which one side of the front side is printed is guided to the double-sided printing sheet return path by the selecting section 19 (sheet position 22) and reaches the reversing section 1A where it is turned over and then the selecting section. 12 (paper position 23, 24). The paper carried to the selection unit 12 is sent to the transfer unit 16 when the selection unit 12 selects the double-sided printing paper return path, and the image on the back surface formed on the photosensitive drum 14 is transferred and fixed as on the front surface. It is fixed in section 17 and printed on both sides.

【００２０】このときの用紙方向は、片面印刷時の用紙
方向と異なり、このまま用紙スタッカ部１８に送られる
と、スタックされた片面印刷結果と両面印刷結果が同一
に扱えなくなる。The paper direction at this time is different from the paper direction at the time of single-sided printing, and if it is sent to the paper stacker unit 18 as it is, the stacked single-sided printing result and double-sided printing result cannot be treated the same.

【００２１】そこで、本発明の実施例は、この両面に印
刷済の用紙を、再度選択部１９により両面印刷用紙帰還
路に送る（用紙位置２５）ようにしている。この用紙
は、反転部１Ａで再度反転され、選択部１２に送られる
（用紙位置２６、２７）。選択部１２に送られた用紙
は、再び、選択部１２が両面印刷用紙帰還路を選択する
ことにより転写部１６へ送られ、用紙スタッカ部１８に
導かれる。Therefore, according to the embodiment of the present invention, the paper on both sides of which has been printed is again sent to the double-sided printing paper return path by the selecting section 19 (paper position 25). This sheet is again reversed by the reversing section 1A and sent to the selecting section 12 (sheet positions 26 and 27). The sheet sent to the selection unit 12 is sent to the transfer unit 16 when the selection unit 12 selects the double-sided printing paper return path again, and is guided to the paper stacker unit 18.

【００２２】この用紙が２度目に転写位置を通過する
際、印刷部は、転写する像として感光ドラム１４上に白
紙像を作成して用紙に転写する。When this sheet passes the transfer position for the second time, the printing section forms a blank sheet image on the photosensitive drum 14 as an image to be transferred and transfers it to the sheet.

【００２３】この結果、用紙スタッカ部１８に収納され
る印刷済みの用紙は、片面印刷の場合と同一の方向に揃
えられて格納される。As a result, the printed sheets of paper stored in the paper stacker unit 18 are aligned and stored in the same direction as in single-sided printing.

【００２４】前述した本発明の実施例の両面印刷の転写
順序は、表面、裏面、空白データであるとして説明した
が、本発明は、この両面印刷の転写順序を、空白、裏
面、表面データの順としてもよい。また、本発明は、片
面の印刷時、及び、両面印刷時共に、用紙が転写部を２
回通るようにし、片面印刷時に、空白データ、表面デー
タの順で転写を行い、両面印刷時に、裏面データ、表面
データの順で転写を行うようにしてもよい。Although the transfer order of double-sided printing in the above-described embodiment of the present invention is described as front side, back side, and blank data, the present invention sets the double-sided printing transfer order of blank, back side, and front side data. It may be in order. Further, according to the present invention, the paper has a transfer portion in both the single-sided printing and the double-sided printing.
Alternatively, the blank data and the front surface data may be transferred in this order during single-sided printing, and the back surface data and the front surface data may be transferred in this order during double-sided printing.

【００２５】また、本発明は、空白データを転写する代
りに、光学部１３、現像部１５、転写部１６による印刷
部の機能を停止させ、空白データの印字と同等となるよ
うに制御してもよい。Further, in the present invention, instead of transferring the blank data, the functions of the printing unit by the optical unit 13, the developing unit 15, and the transfer unit 16 are stopped, and control is performed so as to be equivalent to the printing of the blank data. Good.

【００２６】前述した本発明の一実施例によれば、片面
印刷、両面印刷共に扱うことのできるカット紙印刷装置
において、両面印刷する目的で印刷部を通過した用紙を
裏返し印刷部に再度送る帰還路を通じ印刷部を通過する
回数を制御するだけで、用紙方向を揃えるための特別の
搬送路を使用することなく、用紙スタック部に、片面印
刷、両面印刷の結果を同一方向に揃えて格納することが
できる。According to the above-described embodiment of the present invention, in a cut sheet printing apparatus that can handle both single-sided printing and double-sided printing, the paper that has passed through the printing unit for double-sided printing is sent back to the inside-out printing unit. Simply control the number of times the print unit passes through the path, and store the results of single-sided printing and double-sided printing in the same direction in the paper stack section without using a special transport path for aligning the paper direction. be able to.

【００２７】[0027]

【発明の効果】以上説明したように本発明によれば、片
面印刷、両面印刷が混在して行われる場合にも、用紙ス
タック部に、片面印刷、両面印刷の結果を同一方向に揃
えて格納することができ、印刷後の工程での用紙の取り
扱い性の向上を図ることができる。As described above, according to the present invention, even when single-sided printing and double-sided printing are performed together, the results of single-sided printing and double-sided printing are stored in the same direction in the paper stack section. It is possible to improve the handleability of the paper in the process after printing.

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

【図１】本発明の一実施例の構成と片面印刷時の用紙の
流れを説明する図である。FIG. 1 is a diagram illustrating a configuration of an exemplary embodiment of the present invention and a flow of a sheet during single-sided printing.

【図２】両面印刷時の用紙の流れを説明する図である。FIG. 2 is a diagram illustrating a flow of sheets when performing double-sided printing.

【符号の説明】[Explanation of symbols]

１１ 用紙フィーダ １２、１９ 選択部 １３ 光学部 １４ 感光ドラム １５ 現像部、 １６ 転写部 １７ 定着部 １８ スタッカ部 １Ａ 反転部 11 Paper Feeder 12, 19 Selection Section 13 Optical Section 14 Photosensitive Drum 15 Developing Section, 16 Transfer Section 17 Fixing Section 18 Stacker Section 1A Inversion Section

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 片面印刷、両面印刷共に扱うため、印刷
部を通過後の用紙を裏返し再度同一印刷部を通過させる
機構を備えるカット紙印刷装置において、片面印刷時の
用紙が印刷部を通過する回数と、両面印刷時の用紙が印
刷部を通過する回数との差が零回または偶数回となるよ
うに用紙の搬送を制御することを特徴とする印刷制御方
式。1. A cut sheet printing apparatus provided with a mechanism for turning over a sheet after passing through a printing unit and passing through the same printing unit again to handle both single-sided printing and double-sided printing, and the sheet during single-sided printing passes through the printing unit. A printing control method characterized in that the conveyance of the paper is controlled so that the difference between the number of times and the number of times the paper passes through the printing unit during double-sided printing becomes zero or even. 【請求項２】 請求項１記載の両面印刷制御方式におい
て、既に印刷された面が、再度印刷部を通過する場合、
印刷部は空白データを印刷するか、または、印刷動作を
停止することを特徴とする印刷制御方式。2. The double-sided printing control method according to claim 1, wherein the already printed surface passes through the printing unit again,
A printing control method characterized in that the printing unit prints blank data or stops the printing operation.