JP2004064288A - Method for controlling size of drawn image data at double side print in printer - Google Patents

Method for controlling size of drawn image data at double side print in printer Download PDF

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Publication number
JP2004064288A
JP2004064288A JP2002218168A JP2002218168A JP2004064288A JP 2004064288 A JP2004064288 A JP 2004064288A JP 2002218168 A JP2002218168 A JP 2002218168A JP 2002218168 A JP2002218168 A JP 2002218168A JP 2004064288 A JP2004064288 A JP 2004064288A
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Japan
Prior art keywords
printing
print
paper
data
length
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Pending
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JP2002218168A
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Japanese (ja)
Inventor
Masahiro Shimohori
下堀 昌広
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.)
Ricoh Printing Systems Ltd
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Hitachi Printing Solutions Inc
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Application filed by Hitachi Printing Solutions Inc filed Critical Hitachi Printing Solutions Inc
Priority to JP2002218168A priority Critical patent/JP2004064288A/en
Publication of JP2004064288A publication Critical patent/JP2004064288A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method capable of enhancing position accuracy as print results on a first print side and a second print side on the same paper at double side print of a printer. <P>SOLUTION: After measuring a width and a length of print paper before print, the printer executes double side print, the width and the length of the print paper after printing are measured, the reduction in the paper width / paper length is obtained and stored as data. After that, a main storage stores image drawn data generated by a page description language translation function from data received from a host interface, the data are referenced to apply control of masking data in the width and length directions by using the data of the reduction depending on the print resolution so as to reduce the image drawn data transferred to a print mechanism section thereby reducing the print result of the print second side in matching with the reduction in the paper and adjusting a print write position. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、両面印刷が可能な印刷機後部を有するプリンタ装置に関するものである。
【0002】
【従来の技術】
プリンタ装置の印刷結果に対する精度の要求には、両面印刷時における表裏面の印刷位置の一致が含まれる。しかし、レーザープリンタ装置にみられるように、印刷第一面へトナーを配置し、これを印刷用紙に定着させるため、加圧加熱を行なった後に印刷第二面へのトナー配置および定着を行なう場合、印刷第一面へのトナー定着のための加圧加熱によって印刷用紙が縮小することが知られている。また、印刷第二面へのトナー定着のための加圧加熱による印刷用紙の縮小は無視できる程度であることも知られている。
【0003】
この現象によって、印刷第一面のイメージは本来のサイズに比べ縮小が発生し、また、印刷第二面のイメージは本来のサイズと同等となるが、印刷用紙が縮小されているため、イメージのサイズが印刷第一面に対して相対的に拡大されることとなる。また、同じ書き出しドット位置より印刷を開始すると、用紙と印刷イメージの相対位置関係が変化し、イメージの中心と用紙の中心とのずれが発生する。これらにより、両面印刷結果において、印刷第一面イメージと印刷第二面イメージとにずれが発生する。
【0004】
図3は、従来の技術によるプリンタ装置における両面印刷時印刷第一面と印刷第二面の印刷位置ずれ補正方法の一例である。本例において、印刷第一面および印刷第二面の印刷データ書き出し位置をそれぞれ調整することによって、印刷第一面と印刷第二面の水平方向位置を一致させる、または、印刷第二面の印刷においてイメージ中心位置と用紙中心位置を一致させることが可能となる。しかし、印刷第一面と印刷第二面とで、印刷結果において、イメージサイズの不一致が発生しているため、印刷開始位置の表裏一致と印刷第二面における用紙とイメージの印刷領域の一致を実現することは不可能であった。
【0005】
【発明が解決しようとする課題】
本発明の課題は、プリンタ装置の両面印刷時における同一用紙上の印刷第一面と印刷第二面の印刷結果において、印刷後イメージサイズの一致をするための制御を、印刷位置を一致させるための制御と併せて実行し、プリンタ装置の印刷精度向上を可能とすることである。
【0006】
【課題を解決するための手段】
上記課題を解決する為、本発明は、両面印刷可能な印刷機構部と、印刷データを上位装置から受信し、前記印刷データを記憶装置に格納し、前記記憶装置から前記印刷機構部への印刷データ転送が可能な制御装置と、印刷第一面と印刷第二面のそれぞれの印刷処理後にトナーを定着させるための加圧加熱装置とを備えたプリンタ装置において、印刷第二面の印刷データサイズの縮小を印刷データ書き出しドット位置調整と併せて実行することを特徴とする。
【0007】
また、印刷前に印刷用紙幅および長さを測定し、印刷を実行後に印刷用紙幅および長さの測定を行ない、用紙幅・用紙長さについて縮小した長さのデータを取得し、本データを、当該用紙を格納する給紙装置に対応させた縮小後データとしてプリンタの記憶装置に保存し、上位装置から受信した印刷データを記憶装置に格納し、記憶装置から印刷機構部へ印刷第二面用の印刷データを転送する際に、前記縮小後データを参照して、印刷解像度に応じて前記縮小後データを用紙幅方向および用紙長さ方向のデータをマスクする制御を施し、印刷時に用紙水平方向及び送り方向の位置調整を行うことを特徴とする。
【0008】
【発明の実施の形態】
本発明は、印刷前の印刷用紙幅および長さを測定したのち、当該プリンタ装置において両面印刷を実行し、印刷後の印刷用紙幅および長さの測定を行い、用紙幅・用紙長さについて縮小した長さを求める。本データを、当該用紙を格納する給紙装置に対応させたデータとして保存する。その後、上位装置(ホスト)から受信したデータからページ記述言語翻訳機能によって生成された描画データを主記憶に格納し、主記憶部から印刷機構部への描画データの印刷第二面に対するDMA転送が起動される際、印刷対象となる印刷用紙を格納する給紙装置に対応づけられた用紙の縮小に関するデータを参照し、印刷解像度に応じて縮小分のデータを用紙幅方向および用紙長さ方向のデータをマスクする制御を施し、印刷機構部へ転送される描画データを減少させることによって、印刷第二面の印刷結果を用紙の縮小に合わせて縮小させる。本発明による方法によって縮小されたイメージを印刷第二面に印刷することと、従来の方法による印刷書き出し位置調整を併用することで、印刷開始位置の表裏一致と印刷第二面における用紙とイメージの中心位置一致の両方を実現することを可能とする。前記のデータマスク方法において、マスクされるデータは幅方向、長さ方向ともに1ドット幅ずつとし、印刷可能領域全域から均等にデータのマスク対象データが選択されるような制御を加えることで、マスクされたデータ抜け落ちによる印刷結果への影響を抑えるものとする。
【0009】
図1、図2を用いて、本発明による一実施例を説明する。
【0010】
図2は、本発明によるプリンタ装置の構成例を示す。
【0011】
プリンタ装置は、トナーを印刷用紙上に付着させる感光ドラム20、加圧加熱定着装置19、複数の給紙装置22、用紙搬送経路21および両面印刷を実現するための用紙反転装置18を有する。
【0012】
図1は本発明による両面印刷時印刷第一面と印刷第二面の印刷位置ずれ補正方法を示す。
【0013】
図2の加圧加熱定着装置19を通過した印刷用紙は、熱により印刷用紙縮小前サイズ2から印刷用紙縮小後サイズ3へと印刷用紙長さ収縮長1および印刷用紙幅収縮長4の分だけ縮小する。これにより、第一印刷面に印刷された印刷イメージも縮小されてしまう。印刷第二面のイメージサイズを印刷第一面のイメージサイズと一致させるため、印刷第二面の印刷データから、印刷用紙長さ収縮長1に相当する印刷第二面水平方向マスク対象ドットライン5のライン数を算出し描画データからマスクする。同様に、印刷第二面の印刷データから、印刷用紙幅縮小長4に相当する印刷第二面送り方向マスク対象ドットライン6のライン数を算出し描画データからマスクする。以上により、縮小された印刷第一面のイメージサイズに一致させるために印刷用紙縮小後印刷イメージデータサイズ8によるイメージデータを生成し、このデータを図2に示されるプリンタ装置に印刷第二面の印刷データとして転送する。
【0014】
これに合わせて、用紙走行方向13に対応した印刷第二面の水平方向書き出しドット位置調整9を施すことにより、位置調整された、印刷用紙縮小後印刷第二面水平方向書き出しドット位置調整後イメージ11によるトナーが用紙上に配置され、印刷用紙縮小後水平方向書き出しドット位置調整後印刷第一第二面重ね合わせイメージ14を得ることが可能となる。
【0015】
このままでは、印刷第一面イメージ16と印刷第二面イメージ17の用紙上の位置関係は、用紙走行方向13にずれが生じているため、印刷第二面水平・送り方向書き出しドット位置調整10を施すことにより、位置調整された印刷用紙縮小後印刷第二面水平・送り方向書き出しドット位置調整後イメージ12によるトナーが用紙上に配置され、印刷用紙縮小後水平・送り方向書き出しドット位置調整後印刷第一第二面重ね合わせイメージ15を得ることが可能となる。
【0016】
本発明により、印刷第一面と印刷第二面とで完全に一致したサイズおよび位置による印刷結果を得ることが可能となる。
【0017】
【発明の効果】
本発明によれば、プリンタ装置の両面印刷時における同一用紙上の印刷第一面と印刷第二面の印刷結果において、印刷後イメージサイズの一致と印刷位置の一致を実現することが可能となる。
【図面の簡単な説明】
【図1】本発明による両面印刷時印刷第一面と印刷第二面の印刷位置ずれ補正方法を示す。
【図2】本発明によるプリンタ装置の構成例を示す図である。
【図3】従来の技術による両面印刷時印刷第一面と印刷第二面の印刷位置ずれ補正方法を示す。
【符号の説明】
1は印刷用紙長さ収縮長、2は印刷用紙縮小前サイズ、3は印刷用紙縮小後サイズ、4は印刷用紙幅収縮長、5は印刷第二面水平方向マスク対象ドットラインである。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a printer having a rear portion of a printing press capable of performing double-sided printing.
[0002]
[Prior art]
The requirement for the accuracy of the printing result of the printer device includes matching of the printing positions on the front and back sides during double-sided printing. However, as seen in a laser printer, when the toner is arranged on the first surface of printing and fixed on the printing paper, the toner is arranged and fixed on the second surface of printing after applying pressure and heating. It is known that printing paper is reduced by pressurizing and heating for fixing toner to the first printing surface. It is also known that reduction in size of printing paper due to pressure and heating for fixing toner on the second surface of printing is negligible.
[0003]
Due to this phenomenon, the image on the first side of printing will be reduced in size compared to the original size, and the image on the second side of printing will be equivalent to the original size, but since the printing paper is reduced, the image of the image will be reduced. The size is enlarged relatively to the first printing surface. Further, when printing is started from the same writing dot position, the relative positional relationship between the paper and the print image changes, and a shift occurs between the center of the image and the center of the paper. As a result, in the double-sided printing result, a shift occurs between the first printing side image and the second printing side image.
[0004]
FIG. 3 shows an example of a method of correcting a printing position shift between a first printing surface and a second printing surface during double-sided printing in a printer device according to the related art. In this example, by adjusting the print data writing positions of the first printing surface and the second printing surface, respectively, the horizontal position of the first printing surface and the second printing surface are matched, or the printing of the second printing surface is performed. , The image center position and the paper center position can be matched. However, since the image size mismatch occurs in the printing result between the first printing surface and the second printing surface, it is necessary to match the front and back of the printing start position with the printing area of the paper and the image on the second printing surface. It was impossible to realize.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to perform control for matching the image size after printing in the printing results of the first printing surface and the second printing surface on the same paper at the time of double-sided printing of the printer device, in order to match the printing position. This is executed in conjunction with the control of (1) to enable the printing accuracy of the printer device to be improved.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a printing mechanism capable of performing double-sided printing, receiving print data from a host device, storing the print data in a storage device, and printing from the storage device to the printing mechanism unit. In a printer device having a control device capable of data transfer and a pressurizing and heating device for fixing toner after each printing process on the first printing surface and the second printing surface, the print data size of the second printing surface Is performed together with print data writing dot position adjustment.
[0007]
Also, measure the width and length of the printing paper before printing, measure the width and length of the printing paper after printing, acquire data of reduced lengths for the paper width and length, and save this data. Then, the data is stored in the storage device of the printer as reduced data corresponding to the paper feeding device that stores the paper, the print data received from the upper device is stored in the storage device, and the second surface is printed from the storage device to the printing mechanism unit. When transferring print data for printing, control is performed by referring to the reduced data and masking the reduced data in the paper width direction and the paper length direction in accordance with the print resolution, so that the horizontal It is characterized by performing position adjustment in the direction and the feed direction.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention measures the width and length of the printing paper before printing, executes duplex printing in the printer device, measures the width and length of the printing paper after printing, and reduces the width and length of the paper. Find the length you did. This data is stored as data corresponding to the paper feeding device that stores the paper. Thereafter, the drawing data generated by the page description language translation function from the data received from the host device (host) is stored in the main memory, and the DMA transfer of the drawing data from the main storage unit to the printing mechanism unit for the second printing surface is performed. When the printer is started up, it refers to the data related to paper reduction associated with the paper feeder that stores the printing paper to be printed, and according to the print resolution, the data for the reduction in the paper width direction and paper length direction. By performing control to mask the data and reducing the drawing data transferred to the printing mechanism, the printing result of the second printing surface is reduced in accordance with the reduction of the paper. By printing the image reduced by the method according to the present invention on the second printing surface and using the print start position adjustment according to the conventional method together, the printing start position coincides with the front and back, and the paper and the image on the second printing surface are compared. It is possible to realize both of the center position matching. In the above data masking method, the masked data is set to have a width of one dot in both the width direction and the length direction, and control is performed so that data to be masked is uniformly selected from the entire printable area. It is assumed that the influence on the printing result due to the missing data is suppressed.
[0009]
An embodiment according to the present invention will be described with reference to FIGS.
[0010]
FIG. 2 shows a configuration example of a printer device according to the present invention.
[0011]
The printer device includes a photosensitive drum 20 for adhering toner onto printing paper, a pressure and heat fixing device 19, a plurality of paper feeding devices 22, a paper transport path 21, and a paper reversing device 18 for realizing duplex printing.
[0012]
FIG. 1 shows a method for correcting a printing position shift between a first printing surface and a second printing surface during duplex printing according to the present invention.
[0013]
The printing paper that has passed through the pressurizing and heating fixing device 19 in FIG. 2 is heated by the heat to reduce the size of the printing paper from size 2 before printing paper to size 3 after printing paper reduction, by the length of the printing paper contraction length 1 and the contraction length of the printing paper width 4. to shrink. As a result, the print image printed on the first print surface is also reduced. In order to make the image size of the second printing surface coincide with the image size of the first printing surface, the print data of the second printing surface horizontal direction masking dot line 5 corresponding to the printing paper length contraction length 1 is obtained from the printing data of the second printing surface. Is calculated and masked from the drawing data. Similarly, from the print data of the second print surface, the number of dot lines 6 to be masked in the second print surface feed direction corresponding to the print paper width reduction length 4 is calculated and masked from the drawing data. As described above, in order to match the reduced image size of the first printing surface, image data is generated according to the print image data size 8 after the printing paper is reduced, and this data is transmitted to the printer shown in FIG. Transfer as print data.
[0014]
In accordance with this, by performing the horizontal writing dot position adjustment 9 on the second printing surface corresponding to the paper running direction 13, the position adjusted image after the printing paper reduced printing second surface horizontal writing dot position adjustment image 11 is arranged on the paper, and it is possible to obtain the printed first and second surface superimposed image 14 after adjusting the horizontal writing dot position after the printing paper is reduced.
[0015]
In this state, the positional relationship between the print first surface image 16 and the print second surface image 17 on the paper is shifted in the paper traveling direction 13. By applying the printing paper, the position-adjusted printing paper after reduced printing, the toner on the second surface horizontal / feed direction writing dot position adjusted image 12 is arranged on the paper, and the printing paper reduced after horizontal / feeding writing dot position adjusted printing. The first and second superimposed images 15 can be obtained.
[0016]
According to the present invention, it is possible to obtain a print result with a size and a position that completely match between the first print surface and the second print surface.
[0017]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to implement | achieve the matching of the image size after printing and the matching of a printing position in the printing result of the 1st printing surface and the 2nd printing surface on the same paper at the time of two-sided printing of a printer apparatus. .
[Brief description of the drawings]
FIG. 1 shows a method of correcting a printing position shift between a first printing surface and a second printing surface during duplex printing according to the present invention.
FIG. 2 is a diagram illustrating a configuration example of a printer device according to the present invention.
FIG. 3 shows a method of correcting a printing position shift between a first printing surface and a second printing surface during double-sided printing according to a conventional technique.
[Explanation of symbols]
Reference numeral 1 denotes a print paper length contraction length, 2 denotes a size before reduction of the print paper, 3 denotes a size after reduction of the print paper, 4 denotes a contraction length of the print paper width, and 5 denotes a dot line to be printed on the second surface in the horizontal direction.

Claims (2)

両面印刷可能な印刷機構部と、印刷データを上位装置から受信し、前記印刷データを記憶装置に格納し、前記記憶装置から前記印刷機構部への印刷データ転送が可能な制御装置と、印刷第一面と印刷第二面のそれぞれの印刷処理後にトナーを定着させるための加圧加熱装置とを備えたプリンタ装置において、
印刷第二面の印刷データサイズの縮小を印刷データ書き出しドット位置調整と併せて実行することを特徴とするプリンタ装置における両面印刷時描画データサイズ制御方法。
A printing mechanism capable of performing double-sided printing, a control device capable of receiving print data from a higher-level device, storing the print data in a storage device, and transferring print data from the storage device to the printing mechanism, In a printer device having a pressurizing and heating device for fixing the toner after each printing process of one surface and the second printing surface,
A method for controlling a drawing data size at the time of double-sided printing in a printer device, wherein the reduction of the print data size of the second printing surface is performed together with the adjustment of the dot position for writing the print data.
印刷前に印刷用紙幅および長さを測定し、印刷を実行後に印刷用紙幅および長さの測定を行ない、用紙幅・用紙長さについて縮小した長さのデータを取得し、本データを、当該用紙を格納する給紙装置に対応させた縮小後データとしてプリンタの記憶装置に保存し、上位装置から受信した印刷データを記憶装置に格納し、記憶装置から印刷機構部へ印刷第二面用の印刷データを転送する際に、前記縮小後データを参照して、印刷解像度に応じて前記縮小後データを用紙幅方向および用紙長さ方向のデータをマスクする制御を施し、印刷時に用紙水平方向及び送り方向の位置調整を行うことを特徴とする請求項1記載のプリンタ装置における両面印刷時描画データサイズ制御方法。Measure the width and length of the printing paper before printing, measure the width and length of the printing paper after printing, acquire the data of the reduced paper width and length, and The data is stored in the storage device of the printer as reduced data corresponding to the paper feeding device that stores the paper, the print data received from the upper device is stored in the storage device, and the storage device prints the data for the second side to the printing mechanism. When transferring the print data, referring to the reduced data, performing control to mask the reduced data in the paper width direction and the paper length direction in accordance with the print resolution, and in the paper horizontal direction and the 2. The method according to claim 1, wherein the position adjustment in the feed direction is performed.
JP2002218168A 2002-07-26 2002-07-26 Method for controlling size of drawn image data at double side print in printer Pending JP2004064288A (en)

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US20070070374A1 (en) * 2005-09-16 2007-03-29 Boyes J W Jr Printer controlled dynamically altered N-UP imaging
JP2008134314A (en) * 2006-11-27 2008-06-12 Canon Inc Image forming apparatus and control method
US9354537B2 (en) 2012-07-30 2016-05-31 Ricoh Company, Ltd. Image forming apparatus for calculating shape of recording medium based on angles between conveying direction and straight lines using upstream and downstream detectors
CN106325028A (en) * 2015-07-02 2017-01-11 株式会社东芝 Image forming device and image forming method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070070374A1 (en) * 2005-09-16 2007-03-29 Boyes J W Jr Printer controlled dynamically altered N-UP imaging
JP2012136026A (en) * 2005-09-16 2012-07-19 Infoprint Solutions Co Llc Printer controlled dynamically altered n-up imaging
US8693059B2 (en) 2005-09-16 2014-04-08 Ricoh Production Print Solutions Printer controlled dynamically altered N-UP imaging
JP2008134314A (en) * 2006-11-27 2008-06-12 Canon Inc Image forming apparatus and control method
US8264737B2 (en) 2006-11-27 2012-09-11 Canon Kabushiki Kaisha Image forming apparatus and control method therefor
US9354537B2 (en) 2012-07-30 2016-05-31 Ricoh Company, Ltd. Image forming apparatus for calculating shape of recording medium based on angles between conveying direction and straight lines using upstream and downstream detectors
CN106325028A (en) * 2015-07-02 2017-01-11 株式会社东芝 Image forming device and image forming method

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