JP2008126445A - Stencil printing equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable setting of an appropriate variable magnification rate even in the case when a user replaces a drum unit or stencil paper by that of a different kind, in stencil printing equipment which enables an installation of the stencil paper different in platemaking sizes or the drum units different in printing face sizes and automatic computation of the variable magnification rate. <P>SOLUTION: The stencil printing equipment includes a copy size detecting means 29, a printing face size setting means 26 for setting the printing face size of the installed drum unit, a platemaking width detecting means 30 for the stencil paper and width and length detecting means 32 and 33 for printing paper. The equipment is capable of calculating and setting the optimum variable magnification rate of a copy image on the basis of copy size, the printing face size, the platemaking width and printing paper size. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a stencil printing apparatus which mounts a stencil sheet on which a document image is thermally made to a drum unit, and transfers ink that has passed through a perforated portion of the stencil sheet to a printing sheet, and in particular, to determine a scaling factor for reducing or enlarging the document size. The present invention relates to a stencil printing apparatus that includes means for calculating a scaling ratio suitable for plate making from at least one of a document size, a plate making width of a stencil sheet, and a printing surface size of a drum unit.

  2. Description of the Related Art Conventionally, there has been known a copying apparatus that automatically calculates and sets a scaling ratio from a document size and a paper size (see Patent Document 1). In addition, an integrated stencil printing apparatus having a plate making unit, a printing unit, a plate discharging unit, etc. is already known, and further, a continuous shooting function for making a plate by arranging a plurality of document images on one stencil sheet is implemented, and the document size There is also known a stencil printing apparatus that automatically sets a scaling factor from the paper size and the number of continuous shots (see Patent Documents 2 and 3).

  In the above-described copying apparatus and stencil printing apparatus, the transfer area size of the transfer drum or printing drum mounted on the apparatus main body is fixed and does not change with each transfer operation. Therefore, the scaling factor can be calculated uniformly from the document size, the paper size, and the number of continuous shots.

On the other hand, it is possible to mount stencil papers having different plate making sizes or drum units having different printing surface sizes in one stencil printing apparatus, thereby reducing printing costs (see Patent Document 4). In such a stencil printing apparatus, there is a case where plate making is performed by exchanging with a drum unit having a different printing surface size in accordance with the document size and paper size used by the user. In some cases, the stencil sheet is replaced with a stencil sheet having a different stencil width according to the document size and paper size used by the user.
JP-A-3-42651 JP 2001-260512 A JP 2004-306326 A JP 2001-88419 A

  In the conventional stencil printing machine that can mount stencil sheets with different plate sizes and drum units with different stamp sizes, if the variable magnification is automatically calculated, the user can replace the drum unit with a different stamp size. If the stencil sheet is replaced with a stencil sheet with a different stencil width and the stencil printing operation or continuous shooting operation is performed, the scaling factor is calculated and set automatically without taking into account the information on the printing surface size of the drum unit and the stencil sheet stencil width. It will be done.

  In the plate making operation in the above case, the document image data processed at the automatically set scaling ratio has a size larger than the printing surface size of the drum unit and the plate making width of the stencil sheet, and printing is performed on the printing paper. Sometimes it is not possible to transfer all of the original image data onto the printing paper.

  Also, in the continuous shooting operation in the above case, the document image data processed at the automatically set scaling ratio has a size larger than the printing surface size of the drum unit and the plate making width of the stencil sheet, and is printed on the printing paper. In some cases, the entire number of original image data set by the continuous shooting function cannot be transferred onto the printing paper.

  Immediately after the scaling ratio was calculated and automatically set, the user replaced the drum unit with a different stamp size, or replaced it with a stencil sheet with a different plate-making width, and then performed plate-making or continuous shooting. In this case, the original image data processed with the previously set scaling ratio is larger than the size of the surface of the drum unit that was replaced immediately after setting the scaling ratio or the size of the stencil sheet, and printed on printing paper. In some cases, the entire original image data cannot be transferred onto the printing paper.

  Further, in the usage mode of the conventional stencil printing apparatus, there is a demand for making it easy for the user to see the contents of the document by transferring the document image as large as possible. In such a case, the maximum size printing paper that can be passed is set in the paper feeding unit and the plate making operation is executed. However, the maximum size printing paper is not necessarily determined by the stencil printing apparatus. There are many cases where the stencil printing apparatus determines that the stencil printing apparatus determines that the size is indefinite size, or is a paper cut by the user.

  Then, if the special size paper or paper cut by the user is used in the stencil printing apparatus as described above that sets the magnification according to the document size etc., the paper size information cannot be detected and the magnification is calculated. However, since it cannot be set automatically, it is necessary for the user to manually set an arbitrary magnification and perform plate making operation or continuous shooting operation.

  However, as a result of plate-making operation or continuous shooting operation at a magnification ratio manually set by the user, the original image data became smaller than the drum unit stamp size or stencil plate making width, and printing was performed on printing paper. Sometimes, the original image is transferred only to a part of the printing paper, and a large margin area is generated around the printing paper.

  The present invention has been made in view of the above problems. In the stencil printing apparatus, a stencil sheet having a different plate making size or a drum unit having a different printing surface size can be mounted, and a scaling ratio can be automatically calculated. Even when the user replaces the drum unit with a different printing surface size or replaces it with a stencil paper with a different printing plate width, and performs the plate making operation or continuous shooting operation, consider the change in the printing surface size of the drum unit or the stencil printing plate width. It is an object of the present invention to provide a stencil printing apparatus capable of transferring all of the original image data onto the printing paper when printing is performed on the printing paper because the scaling factor is calculated and set.

The stencil printing apparatus according to claim 1 is:
A drum unit on which a stencil sheet that is detachably mounted on the apparatus main body is mounted, a panel unit that performs operation input and display, a document reading unit that reads a document image of a placed document, and a read A stencil unit for making a stencil sheet on a stencil sheet, a stencil sheet holder for holding a stencil sheet to be used for stencil, a paper feeding unit for supplying the arranged printing paper, and a pre-made stencil mounted on the drum unit In a stencil printing apparatus comprising a printing unit for transferring ink from base paper to printing paper and a paper discharge unit for discharging printed printing paper,
A document size detecting means for detecting a document size of a document placed in the document reading unit;
At least one means selected from the group consisting of printing surface size setting means for setting the printing surface size of the drum unit mounted on the apparatus main body and plate making width detection means for detecting the plate making width of the stencil paper held by the stencil paper holder When,
An optimum scaling factor of the original image read by the original reading unit is calculated and set based on at least the original size and one or more items selected from the group consisting of the stamp face size and the plate making width. And a scaling factor determining means.

The stencil printing apparatus according to claim 2 is the stencil printing apparatus according to claim 1,
The printing surface size setting means and a scaling factor determination means for calculating and setting an optimum scaling factor of the document image read by the document reading unit based on the document size and the stamping surface size.

The stencil printing apparatus according to claim 3 is the stencil printing apparatus according to claim 2,
Furthermore, the printing paper size detecting means for detecting the size of the printing paper arranged in the paper feeding unit is provided,
The scaling factor determining means calculates and sets an optimal scaling factor based on the document size, the printing face size, and the printing paper size.

The stencil printing apparatus according to claim 4 is the stencil printing apparatus according to claim 1,
The plate making width detecting unit, and a scaling factor determining unit for calculating and setting an optimum scaling factor of the document image read by the document reading unit based on the document size and the plate making width of the stencil sheet. .

The stencil printing apparatus according to claim 5 is the stencil printing apparatus according to claim 4,
Furthermore, the printing paper size detecting means for detecting the size of the printing paper arranged in the paper feeding unit is provided,
The scaling factor determining means calculates and sets an optimum scaling factor based on the document size, the platemaking width of the stencil sheet, and the printing paper size.

The stencil printing apparatus according to claim 6 is the stencil printing apparatus according to claim 1,
A variable for calculating and setting an optimum scaling factor of the original image read by the original size reading means, the plate making width detecting means, and the original reading section based on the original size, the printing face size, and the plate making width of the stencil sheet. It has a magnification determining means.

The stencil printing apparatus according to claim 7 is the stencil printing apparatus according to claim 1,
The stamp size setting means, the continuous shooting number setting means for setting the number of continuous shots in a continuous shooting function for making a plurality of original images on a single stencil sheet, and the original image read by the original reading unit There is provided a scaling factor determining means for calculating and setting an optimal scaling factor based on the document size, the stamp size, and the number of continuous shots.

The stencil printing apparatus according to claim 8 is the stencil printing apparatus according to claim 7,
Furthermore, the printing paper size detecting means for detecting the size of the printing paper arranged in the paper feeding unit is provided,
The scaling factor determining means calculates and sets an optimum scaling factor based on the document size, the stamp surface size, the number of continuous shooting planes, and the printing paper size.

The stencil printing apparatus according to claim 9 is the stencil printing apparatus according to claim 1,
The plate making width detecting means, the continuous shooting face number setting means for setting the number of continuous shooting faces in a continuous shooting function for making a plate by arranging a plurality of original images on one stencil sheet, and the document image read by the original reading section There is provided a scaling factor determining means for calculating and setting an optimum scaling factor based on the document size, the plate making width of the stencil sheet, and the number of continuous shots.

The stencil printing apparatus according to claim 10 is the stencil printing apparatus according to claim 9,
Furthermore, the printing paper size detecting means for detecting the size of the printing paper arranged in the paper feeding unit is provided,
The scaling factor determining means calculates and sets an optimum scaling factor based on the document size, the platemaking width of the stencil sheet, the number of continuous shots, and the printing paper size.

According to the stencil printing apparatus described in claim 11, in the stencil printing apparatus according to claim 1,
The printing surface size setting means, the plate making width detection means, the continuous shooting face number setting means for setting the number of continuous shooting faces in a continuous shooting function for making a plate by arranging a plurality of original images on one stencil sheet, and the original reading section And a scaling factor determining means for calculating and setting an optimum scaling factor of the document image read in step (a) based on the document size, the stamp surface size, the plate making width of the stencil sheet, and the number of continuous shots.

The stencil printing apparatus according to claim 12 is the stencil printing apparatus according to any one of claims 1, 2, 3, 6, 7, 8, and 11.
Furthermore, it has mounting detection means for detecting attachment and detachment of the drum unit with respect to the apparatus main body,
When replacement of the drum unit in the apparatus main body is detected by the mounting detection unit, the scaling factor determination unit recalculates the scaling factor again and automatically resets it.

The stencil printing apparatus according to claim 13 is the stencil printing apparatus according to claim 12,
Further, when the mounting detection means detects the replacement of the drum unit, the printing surface size of the drum unit newly mounted on the apparatus main body is compared with the printing surface size of the drum unit mounted so far, and the printing surface size of the two drum units is compared. Drum size comparison and determination means for determining whether or not are different,
Notification means for displaying on the panel unit that when the drum size comparison and discrimination means discriminates that the printing surface sizes of the two drum units are different, the fact that the reset scaling factor is different from the previous scaling factor It is characterized by comprising.

The stencil printing apparatus according to claim 14 is the stencil printing apparatus according to any one of claims 1, 2, 3, 6, 7, 8, and 11.
Furthermore, a mounting detection means for detecting attachment / detachment of the drum unit to / from the apparatus main body,
When the mounting detection unit detects the replacement of the drum unit, the printing surface size of the drum unit newly mounted on the apparatus main body is compared with the printing surface size of the drum unit that has been mounted so far. Drum size comparison and discrimination means for discriminating whether or not they are different;
When the drum size comparison / determination means determines that the printing surface sizes of the two drum units are different from each other, either set a scaling factor corresponding to the newly mounted drum unit or change the drum unit mounted so far. Notification means for displaying on the panel unit that the user is left with the choice of whether to continue the magnification,
It is characterized in that the user can instruct from the panel unit which of the scaling factors is selected by viewing the display on the panel unit.

The stencil printing apparatus according to claim 15 is the stencil printing apparatus according to any one of claims 1, 4, 5, 6, 9, 10, and 11.
Furthermore, the stencil sheet mounting detection means for detecting the detachment of the stencil sheet with respect to the apparatus main body is provided,
When the attachment / detachment of the stencil sheet in the apparatus main body is detected by the stencil sheet attachment detection unit, the scaling factor determination unit recalculates the scaling factor again and automatically resets it.

  Thus, according to the invention described in claims 1 to 11, when performing a plate making operation or a continuous shooting operation in a stencil printing apparatus in which the drum unit or the stencil sheet can be replaced by any selection of the user, In addition to the size information, paper size information, and information on the number of continuous shots in the continuous shooting function, changes are also made by taking into account information on the printing surface size of the drum unit and stencil sheet making width that may be changed by replacement. The magnification was calculated and set automatically.

  Therefore, in the case of plate-making operation, when the original image data processed at the automatically set scaling ratio is larger than the printing surface size of the drum unit and the plate-making width of the stencil sheet, printing is performed on printing paper. Problems such as not being able to transfer all of the original image data onto the printing paper can be solved.

  Also, in the case of continuous shooting, the document image data processed at the automatically set scaling ratio is larger than the drum unit stamp size and the stencil sheet making width, and printing is performed on the printing paper. In some cases, it is possible to solve the problem that the entire original image data of the number of pages set by the continuous shooting function cannot be transferred onto the printing paper.

  Therefore, even when using special-size paper or paper cut by the user, the original image data will be a small size that is smaller than the printing surface size of the drum unit or the plate-making width of the stencil paper, and the original image will be printed when printing on the printing paper. Can be transferred only to a part of the printing paper, and a problem such as a large margin area occurring in the periphery of the printing paper can be solved.

  According to the twelfth aspect of the present invention, since the mounting detection means can detect whether the drum unit is attached to or detached from the apparatus main body, automatic recalculation and resetting of the scaling factor can be ensured when replacement of the drum unit is detected. Can be done automatically.

  Furthermore, according to the invention described in claim 13, when the two printed drum units have different printing face sizes, it is indicated that the zoom ratio reset with the replacement is different from the previous zoom ratio. Can be displayed on the unit to alert the user.

  Further, according to the invention described in claim 14, when the mounting detection means can reliably detect the attachment / detachment of the drum unit to / from the apparatus main body, and the two drum units that have been replaced have different printing face sizes, Since it is left to the user to select which of the new variable magnification corresponding to the old variable magnification corresponding to the removed drum unit, there is an effect that the user has more options for using the apparatus and the usability is improved.

  Further, according to the invention described in claim 15, since the stencil sheet attachment / detachment detecting means can detect the attachment / detachment of the stencil sheet to the apparatus main body, the automatic recalculation of the scaling factor when the replacement of the stencil sheet is detected, and Resetting can be performed automatically and reliably.

  A stencil printing apparatus according to an embodiment described below is an integrated stencil printing apparatus having a plate making unit, a printing unit, a paper feeding unit, a plate discharging unit, a control unit, and the like. This stencil printing apparatus has a scaling factor determining means for reducing or enlarging the original size, and has a continuous shooting function for making a plurality of original images side by side on a single stencil sheet, and further, a stencil sheet and a drum unit, respectively. It is a stencil printing device that can be replaced with a stencil sheet with a different stencil size or a drum unit with a different stencil size, and in addition to the items that were previously used as the basis for calculating the scaling ratio, the stencil width of the stencil sheet and the surface of the drum unit Using at least one of the sizes as one of the standards, a scaling factor suitable for plate making can be calculated.

(1) 1st Embodiment (FIGS. 1-11)
FIG. 1 is a side view schematically showing the internal schematic structure of the stencil printing apparatus 1 of the first embodiment (hereinafter also referred to as a first example), and FIG. 2 is a block diagram showing its control configuration.
As shown in FIG. 1, the stencil printing apparatus 1 of the first example has an ink supply means inside, and a stencil sheet made on the outer surface is wound around, and is detachably mounted on the apparatus main body and is driven to rotate. A cylindrical drum unit 2, a document reading unit 3 that reads a document image of a set document with a scanner, a plate making unit 5 that makes the read document image on a stencil sheet 4, and a stencil sheet 4 that is used for plate making. A stencil sheet holder 6 that is held so as to be supplied to the plate making unit 5, a paper feed unit 8 that is set in a state in which the print paper 7 is stacked, and the print paper 7 supplied from the paper feed unit 8 is driven to rotate. A printing unit 9 such as a press roller for transferring ink to the printing paper 7 through the perforated part of the stencil sheet 4 by pressing against the drum unit 2 and a paper discharge unit 10 for discharging the printed printing paper 7 are provided.

  The plate making section 5 provided between the stencil sheet holder 6 and the drum unit 2 has a thermal head and a platen roller, and is supplied from the stencil sheet holder 6 which holds the roll-shaped stencil sheet 4 rotatably. The stencil sheet 4 is subjected to thermal plate-making, and the stencil sheet 4 thus made is supplied to the drum unit 2 and wound around a printing area on the outer surface thereof for printing. Here, the printing surface size of the drum unit 2 (the size of the printing area) and the plate making width of the stencil sheet 4 wound around the drum unit 2 basically correspond to each other. The type of stencil sheet 4 that is most suitable for this size is uniquely determined at the time of mounting, but any stencil sheet of a size that can cover at least the printing surface of the drum unit 2 can be used.

  As shown in FIG. 2, the stencil printing apparatus 1 of the first example has a CPU unit 11 as a control means, and receives signals from various detection means provided in each part of the apparatus, which will be described later. And receives an operation input from the panel unit 12, receives a user instruction, performs various information processing using the memory means 13 and the stamp size comparison means 14 of the drum unit 2, and controls the entire apparatus in an integrated manner. To do.

  FIG. 3 is a plan view showing the panel unit 12. As shown in FIGS. 2 to 3, the panel unit 12 of the first example includes a numeric keypad 15 and a direction key 16, an operation input unit 20, a message display unit 21, a magnification display unit 22, and a continuous shot number setting unit 23. The touch panel 24 functioning as

  FIG. 4 is a perspective view of the drum unit 2. As shown in FIG. 4, the drum unit 2 is detachably mounted on a drum rail 25 that is detachable from the apparatus main body, and the drum unit 2 is removed from the drum rail 25 drawn out from the apparatus main body. If removed, the other drum unit 2 for replacement can be attached to the drum rail 25 which has become empty. This drum unit 2 has a plurality of types of marking surface units such as A3 size, B4 size, A4 size, etc., as shown in FIG. 2 to FIG. The printing face size information set for each drum unit 2 by means 26 (dip switch) is transferred to the CPU unit 11 which is a control means of the apparatus main body when the drum unit 2 is inserted and attached to the apparatus main body, and is attached to the apparatus main body. The CPU unit 11 determines the printing surface size of the drum unit 2.

  As shown in FIGS. 2 to 4, the connector 27 for exchanging signals between the drum unit 2 and the apparatus main body has a mounting detection means (insertion / removal sensor) 28 for the drum unit 2 that detects attachment / detachment of the apparatus main body and the drum unit 2. Is provided.

  FIG. 5 shows display contents on the touch panel 24 of the panel unit 12. FIG. 6A shows an initial screen displayed when the stencil printing apparatus 1 is turned on. The variable magnification is set to 100% of the initial value. FIG. 5B shows a screen displayed when the continuous shooting function is selected, and an operation for setting the number of sheets to be made side by side on one stencil sheet 4 can be performed.

  FIG. 6 is a plan view of the document reading unit 3. As shown in FIGS. 2 to 6, a plurality of, for example, reflection sensors for detecting the document size are provided below the document glass on which the document is placed. The document size detection means 29 (A to D) are provided according to the size of the document to be detected, and the detected document size information is transferred to the CPU unit 11 of the apparatus body, and the document size placed on the document glass is detected. The size is determined.

  FIG. 7 is a perspective view showing the stencil sheet holder 6 and the stencil sheet 4 attached thereto. In the first example, a stencil sheet 4 in which a long belt-shaped stencil sheet 4 is wound in a roll shape is used. Although not shown in FIG. 7, the stencil holder 6 is composed of reflection sensors set at a plurality of predetermined positions for detecting the width of the set stencil sheet (of the stencil sheet 4 shown in FIG. 2). ) The width information of the stencil sheet 4 mounted on the stencil sheet holder 6 is detected by the stencil width detection means 30 (size detection means), and the detected stencil width information of the stencil sheet 4 is transferred to the CPU unit 11 of the apparatus main body. The width of the stencil sheet 4 attached to the stencil sheet holder 6 is determined.

  FIG. 8 is a plan view of the paper feed unit 8, and a pair of paper feed fences 31, 31 are installed so as to be movable in the same width direction so as to contact both ends of the stacked printing paper 7 in the width direction. The set position of the paper feed fences 31, 31 corresponding to the width dimension of the printing paper 7 is detected by the printing paper width detecting means 32 such as a potentiometer. Further, in the length direction of the stacked printing sheets 7, a printing sheet length detecting unit 33 including a reflection sensor for detecting the presence or absence of the sheet is provided. The detection information of the printing paper width detection means 32 and the detection information of the printing paper length detection means are transferred to the CPU unit 11 of the apparatus main body as shown in FIG. 7 is determined.

Next, in the first example stencil printing apparatus 1 having the above-described configuration, a control operation (when the continuous shooting function is not set) in calculation / setting of a scaling ratio performed prior to plate making will be described.
FIG. 9 is a flowchart showing the control process of the first example. When the power of the stencil printing apparatus 1 is turned on, each part of the electrical system and mechanical system performs an initialization process (step 11; hereinafter referred to as S11), and the display unit of the panel unit 12 is shown in FIG. The initial screen of (a) is displayed, and at this time, the scaling factor is set to 100% of the initial value (S12).

  The CPU unit 11 receives the printing surface size information transferred from the printing surface size setting means 26 of the drum unit 2 inserted in the apparatus main body and the plate making width detection means 30 of the stencil paper holder 6 to which the stencil paper 4 is mounted. The plate making width information of the stencil sheet 4 and the paper size information transferred from the printing paper width detection means 32 and the printing paper length detection means 33 of the paper supply unit 8 are received and will be described below based on these data. Judgment is made and the result is stored (S13).

  Based on the printing surface size information transferred from the printing surface size setting means 26 of the drum unit 2, the CPU unit 11 determines whether the printing surface size of the drum unit 2 inserted into the apparatus main body is A3 size, B4 size, or A4 size. The determination is made and the determination result is stored in the memory means 13 (S13).

  The CPU unit 11 determines whether the stencil sheet 4 mounted on the stencil sheet holder 6 has an A3 width based on the stencil sheet width information transferred from the stencil sheet detection unit 30 of the stencil sheet holder 6. It is determined whether the width is B4 or A4, and the determination result is stored in the memory means 13 (S13).

  The CPU unit 11 determines whether the print paper 7 loaded on the paper feed tray is A3 size based on the paper size information transferred from the print paper width detection unit 32 and the print paper length detection unit 33 of the paper supply unit 8. Alternatively, it is determined whether the size is B4 size, A4 size, B5 size or non-standard size, and the determination result is stored in the memory means 13 (S13).

  In order for the user to make the plate, the original is placed on the original glass of the original reading unit 3, the pressure plate cover (not shown) is closed, and the original is sandwiched between the original glass (S14, YES) and read from the panel unit 12. When a start operation input is performed, the document size detection unit 29 including a plurality of reflective photosensors provided on the lower side of the document glass irradiates the document surface with light and receives the reflected light to generate an image of the document. Is output as image size information and transferred to the CPU unit 11 (S15).

  The CPU unit 11 determines whether the document placed on the document glass of the document reading unit 3 is A3 size, B4 size, or A4 size based on the image size information transferred from each document size detection unit 29. Alternatively, it is determined whether the size is B5 size or non-standard size, and is stored in the memory means 13 (S15).

  Subsequently, the CPU unit 11 changes from the stored document size, the printing surface size of the drum unit 2, the plate making width of the stencil sheet 4, and the printing paper size so that all of the document image can be transferred onto the printing paper 7 without any loss. The magnification is calculated (S16) and set in the variable magnification display means 22 of the panel unit 12 (S17).

Next, FIG. 10 is a flowchart showing the scaling factor calculation process in S16 of FIG.
The smallest size is extracted from the three conditions of the printing surface size of the drum unit 2, the plate making width of the stencil sheet 4, and the printing paper size, and this size is determined as the effective size (S21).

  Next, the document size is compared with the effective size, and if both are the same size (S22, YES), the magnification is set to 100% (S23).

  When the document size is large (S22, NO and S24, YES), the magnification for reducing the document size to the effective size is calculated and set (S25).

  When the document size is small (S22, NO and S24, NO), the magnification for enlarging the document size to the effective size is calculated and set (S26).

  FIG. 11 shows that when an A3 size original is placed in a state where an A4 size drum unit 2 is inserted, a B4 width stencil sheet 4 is loaded, and a B4 size printing paper 7 is loaded, the scaling factor is A3. The display unit (touch panel 24) of the panel unit 12 when calculated and set as a 71% reduction from size to A4 size is shown.

  In this example, the A4 size of the drum unit 2 is set as an effective size and compared with the A3 size of the document, and a magnification of 71% for reducing the document size A3 to the effective size A4 is calculated.

(2) Second embodiment (FIGS. 12 to 14)
In the second embodiment (hereinafter also referred to as a second example), in the stencil printing apparatus 1 having the same configuration as that of the first example, a continuous shooting function is set as a control operation for calculating and setting a scaling ratio prior to plate making. FIG. 12 is a flowchart showing the control process.

  In FIG. 12, S31 to S33 are the same as S11 to S13 in FIG. 9 of the first example, and after the stencil printing apparatus 1 is turned on, the CPU unit 11 prints the surface size information of the drum unit 2 and the stencil sheet 4 The processing process until the prepress width information and the paper size information of the printing paper 7 are received and stored is shown.

  In FIG. 12, when the user selects the continuous shooting function for making a plurality of document images on a single stencil sheet 4 (S34, YES), the panel unit 12 displays the continuous shooting as shown in FIG. 5B. Display the number of screens setting screen. In this screen, one of the two to eight sides is selected as shown in FIG. 5B, or one of the two to sixteen sides is selected as shown in S35 of FIG. You may do it. The size of each original image fitted on one stencil sheet 4 is the same.

  In order for the user to make the plate, the original is placed on the original glass of the original reading unit 3, the pressure plate cover (not shown) is closed, and the original is sandwiched between the original glass (S36, YES) and read from the panel unit 12. When a start operation input is performed, the document size detection unit 29 including a plurality of reflective photosensors provided on the lower side of the document glass irradiates the document surface with light and receives the reflected light to generate an image of the document. Is output as image size information and transferred to the CPU unit 11 (S37).

  The CPU unit 11 determines whether the document placed on the document glass of the document reading unit 3 is A3 size, B4 size, or A4 size based on the image size information transferred from each document size detection unit 29. Alternatively, it is determined whether the size is B5 size or non-standard size, and is stored in the memory means 13 (S37).

  Subsequently, the CPU unit 11 does not lose a part of the original image based on the stored original size, the printing surface size of the drum unit 2, the plate making width and printing paper size of the stencil sheet 4, and the selected number of continuous shots. A scaling factor is calculated that can transfer all onto the printing paper 7 and can reliably make all the original images of the number of faces set by the continuous shooting function on one stencil sheet 4 (S38), A setting is made on the touch panel 24 which is the variable magnification display means 22 of the panel unit 12 (S39).

FIG. 13 is a flowchart showing a scaling factor calculation process when the continuous shooting function is set.
The smallest size is extracted from the three conditions of the printing surface size of the drum unit 2, the plate making width of the stencil sheet 4, and the printing paper size, and this size is determined as the effective size (S41).

  The area size per one when the effective size is divided by the number of continuous shots set from the panel is determined as the division size (S42).

  The original size and the divided size are compared, and if both are the same size (S43, YES), the magnification is set to 100% (S44).

  If the document size is large (NO in S43 and YES in S45), the magnification for reducing the document size to the divided size is calculated and set (S46).

  If the document size is small (NO in S43 and NO in S45), the magnification for enlarging the document size to the divided size is calculated and set (S47).

  FIG. 14 shows that the B4 size drum unit 2 is inserted, the B4 width stencil sheet 4 is loaded, and the A3 size printing paper 7 is loaded, and the four-sided continuous shooting of the continuous shooting function is set. 6 shows the display unit (touch panel 24) of the panel unit 12 when the variable magnification is calculated and set as 50% reduction from the B4 size to the B6 size. In this example, the B4 size of the drum unit 2 is set as an effective size, and the magnification 50% for reducing the document size B4 to the divided size B6 is calculated by comparing the divided size B6 with the B4 size of the document.

(3) Third embodiment (FIGS. 15 and 16)
In the third embodiment (hereinafter also referred to as a third example), two types of originals 1 and 2 are made and printed on a stencil printing apparatus 1 having the same configuration as the first example, and these are printed on one sheet of printing paper. 7 shows a scaling factor calculation process in the case of combining and outputting. Note that the illustrated illustration is merely an example, and the number of a plurality of originals to be combined to obtain one image is of course not limited.

  After the power of the stencil printing apparatus 1 is turned on, the CPU unit 11 performs the first processing process until receiving and storing the printing surface size information of the drum unit 2, the plate making width information of the stencil paper 4, and the paper size information of the printing paper 7. The same as the example and the second example.

  As shown in FIG. 15, in the third example, the document 1 is A3 size and the sun is drawn on the upper left, and printing is performed with the drum unit 2 (red) equipped with the red ink of the printing surface size B4. . The document 2 is A3 size with a mountain illustration in the center, and printing is performed with the drum unit 2 (black) equipped with black ink of the stamp size A3.

  First, plate making / printing of the document 1 is executed with the drum unit 2 (red) mounted on the apparatus main body. The magnification is calculated in accordance with the flowchart of FIG. 10, a magnification of 71% is set to reduce the size from A3 to B4, and the sun illustration that is reduced from the original is printed with red ink on the A3 size printing paper 7. .

  Subsequently, after the drum unit 2 (red) is extracted from the apparatus main body and the drum unit 2 (black) is newly mounted, the document 2 is set in the document reading unit 3. When the CPU 11 detects the insertion / removal of the drum unit 2 by the mounting detection means 28 (insertion / removal sensor) provided in the drum unit 2, the CPU unit 11 calculates the magnification according to the flowchart of FIG. 10, and converts the image of the A3 size document 2 into the A3 size. A magnification of 100% formed on the stencil sheet 4 is set.

  Further, the CPU unit 11 compares the printing surface size of the drum unit 2 (red) used for the previous plate making / printing with the printing surface size of the newly mounted drum unit 2 (black) by using the printing surface size comparison means 14. When there is a difference in the stamp size (in the third example, there is of course a difference between B4 and A3), as shown in FIG. 16, the touch panel 24 that is the display unit of the panel unit 12 has a scaling factor due to the difference in the stamp size. The notice that the change has occurred is displayed to alert the user, and there is a problem that the positional deviation is generated in the illustration that is produced and printed on the printing paper 7 by making the original 2 with the changed magnification. To prevent.

  That is, FIG. 16 shows the message of the panel unit 12 when the magnification ratio is changed from 71% to 100% when the original unit 2 is set in the original reading unit 3 by replacing the drum unit 2 (black) in the third example. In this state, the scaling factor is 100%, but if the “Cancel” key is pressed, the scaling factor can be returned to the previous setting (71% in the third example).

  In the third example, the red image of “sun” of the document 1 printed by the drum unit 2 (red) is printed on the A3 printing paper 7 at a reduction ratio of 71% with respect to the document, and then the drum unit 2 When printing on the same printing paper 7 without pressing the “Cancel” key with (black) mounted and the scaling factor automatically changed to 100%, the black image of “mountain” on the original 2 is Printing is performed on the printing paper 7 at a magnification of 100%. As a result, as shown in “actual output” in FIG. 15, the red image of “sun” is reduced, and the black image of “mountain” is as the original image. Unlike the ratio of the original image, the image is relatively larger than the “sun”, and the overall print result is different from the original image.

  Here, when the drum unit 2 (black) is mounted and the variable magnification is automatically changed to 100%, the message displayed on the panel unit 12 that the variable magnification has been changed from 71% to 100% as described above. If the user who viewed the screen presses the “Cancel” key, the scaling factor returns to the previous setting of 71%, and if printing is performed on the same printing paper 7 with the drum unit 2 (black), the same A3 printing paper 7 Since both the red “sun” image and the black “mountain” image made at the same time are unified to a reduction rate of 71%, the originals 1 and 2 are appropriately combined as shown in the “output object desired” of FIG. The result will be obtained.

(4) Fourth embodiment (FIG. 17)
In the fourth embodiment (hereinafter also referred to as a fourth example), a drum unit 2 having a different printing color and printing surface size is used in the stencil printing apparatus 1 having the same configuration as that of the third example. An image is formed in two colors on a sheet of printing paper 7, but the setting of the magnification when the drum unit 2 is replaced is different from the display on the panel unit 12.

  After plate making / printing of the document 1 is executed with the drum unit 2 (red) mounted on the apparatus main body, the drum unit 2 (black) is newly mounted and the document 2 is set on the document reading unit 3. The CPU unit 11 compares the printing surface size of the drum unit 2 (red) with the printing surface size of the newly mounted drum unit 2 (black) by the printing surface size comparison means 14, and if there is a difference between the printing surface sizes of the two (fourth) In the example, as in the third example, there is of course a difference between B4 and A3.) As shown in FIG. 17, the touch panel 24 which is the display unit of the panel unit 12 is not imprinted without setting a new magnification immediately. The fact that the scaling factor is changed due to the difference in size is displayed, and the newly calculated scaling factor of the drum unit 2 (black) is set, or the scaling factor of the drum unit 2 (red) that has been mounted so far is continued. Let the user make a selection.

  That is, as shown in FIG. 17, in the fourth example, the newly calculated variable magnification (100%) is set when the original 2 is set in the original reading unit 3 by replacing the drum unit 2 (black). Alternatively, the panel unit 12 can display a message for selecting whether to continue the scaling factor (71%) of the drum unit 2 (red) that has been mounted.

  For a user aiming at composite output of the originals 1 and 2, if plate making / printing of the original 2 is executed at the changed magnification, there is an inconvenience that the illustration output on the print paper 7 is misaligned. According to the example, such inconvenience can be avoided by looking at the display of the panel unit 12 and selecting from the panel unit 12 to continue the scaling factor of the drum unit 2 (red) mounted so far.

  For a user who does not intend to synthesize the originals 1 and 2, when the original 2 is subjected to plate making / printing without changing the newly calculated variable magnification, 2 is output to the printing paper 7 at an inappropriate magnification (in the fourth example, what can be printed at a magnification of 100% is reduced to 71%), and a large margin area is generated on the printing paper 7. However, according to the fourth example, it is possible to avoid such inconvenience by selecting a newly calculated scaling factor by operating the panel unit 12 by looking at the display on the panel unit 12. Can do.

FIG. 1 is a side view schematically showing a schematic internal structure of the stencil printing apparatus 1 according to the first embodiment. FIG. 2 is a block diagram showing a control configuration of the stencil printing apparatus 1 of the first embodiment. FIG. 3 is a plan view showing the panel unit 12 of the stencil printing apparatus 1 of the first embodiment. FIG. 4 is a perspective view of the drum unit 2 of the stencil printing apparatus 1 according to the first embodiment. FIG. 5 is a plan view showing display contents on the panel unit 12 of the stencil printing apparatus 1 of the first embodiment. FIG. 6 is a plan view of the document reading unit 3 in the stencil printing apparatus 1 of the first embodiment. FIG. 7 is a perspective view showing the stencil sheet holder 6 and the stencil sheet 4 attached thereto in the stencil printing apparatus 1 of the first embodiment. FIG. 8 is a plan view of the paper feed unit 8 in the stencil printing apparatus 1 of the first embodiment. FIG. 9 is a flowchart showing the control process of the first embodiment. FIG. 10 is a flowchart showing the scaling factor calculation process in S16 of FIG. FIG. 11 shows a display example of the display unit of the panel unit 12 in the stencil printing apparatus 1 of the first embodiment. FIG. 12 is a flowchart showing the control process of the second embodiment. FIG. 13 is a flowchart showing the scaling factor calculation process in S38 of FIG. FIG. 14 shows a display example of the display unit of the panel unit 12 in the stencil printing apparatus 1 of the second embodiment. FIG. 15 is a schematic diagram showing a scaling factor calculation procedure and an output product in the third embodiment. FIG. 16 shows a display example of the display unit of the panel unit 12 in the stencil printing apparatus 1 of the third embodiment. FIG. 17 shows a display example of the display unit of the panel unit 12 in the stencil printing apparatus 1 of the fourth embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Stencil printing apparatus 2 ... Drum unit 3 ... Original reading part 4 ... Stencil base paper 5 ... Plate making part 6 ... Stencil base paper holder 7 ... Printing paper 8 ... Paper feed part 9 ... Printing part 10 ... Paper discharge part 12 ... Panel unit 14 ... Stamp size comparison means 20 ... Operation input means 21 ... Message display means 22 ... Variable magnification display means 23 ... Continuous shooting number setting means 24 ... Touch panel 26 ... Stamp face size setting means 28 ... Mounting detection means 29 ... Document size detection means 30 ... Plate making width detection means 32 ... Printing paper width detection means 33 ... Printing paper length detection means

Claims (15)

A drum unit on which a stencil sheet that is detachably mounted on the apparatus main body is mounted, a panel unit that performs operation input and display, a document reading unit that reads a document image of a placed document, and a read A stencil unit for making a stencil sheet on a stencil sheet, a stencil sheet holder for holding a stencil sheet to be used for stencil, a paper feeding unit for supplying the arranged printing paper, and a pre-made stencil mounted on the drum unit In a stencil printing apparatus comprising a printing unit for transferring ink from base paper to printing paper and a paper discharge unit for discharging printed printing paper,
A document size detecting means for detecting a document size of a document placed in the document reading unit;
At least one means selected from the group consisting of printing surface size setting means for setting the printing surface size of the drum unit mounted on the apparatus main body and plate making width detection means for detecting the plate making width of the stencil paper held by the stencil paper holder When,
An optimum scaling factor of the original image read by the original reading unit is calculated and set based on at least the original size and one or more items selected from the group consisting of the stamp face size and the plate making width. A stencil printing apparatus, comprising: 2. The printing surface size setting unit, and a scaling factor determination unit that calculates and sets an optimal scaling factor of a document image read by the document reading unit based on the document size and the printing surface size. The stencil printing apparatus as described. Furthermore, the printing paper size detecting means for detecting the size of the printing paper arranged in the paper feeding unit is provided,
3. The stencil printing apparatus according to claim 2, wherein the variable magnification determining means calculates and sets an optimal variable magnification based on the document size, the printing surface size, and the printing paper size. The image forming apparatus includes: a plate making width detecting unit; and a magnification changing unit for calculating and setting an optimum magnification of the document image read by the document reading unit based on the document size and the plate making width of the stencil sheet. The stencil printing apparatus according to claim 1. Furthermore, the printing paper size detecting means for detecting the size of the printing paper arranged in the paper feeding unit is provided,
5. The stencil printing apparatus according to claim 4, wherein the variable magnification determining means calculates and sets an optimal variable magnification based on the document size, the plate making width of the stencil sheet, and the printing paper size. A variable for calculating and setting an optimum scaling factor of the original image read by the original size reading means, the plate making width detecting means, and the original reading section based on the original size, the printing face size, and the plate making width of the stencil sheet. The stencil printing apparatus according to claim 1, further comprising a magnification determining unit. The stamp size setting means, the continuous shooting number setting means for setting the number of continuous shots in a continuous shooting function for making a plurality of original images on a single stencil sheet, and the original image read by the original reading unit 2. The stencil printing apparatus according to claim 1, further comprising a scaling factor determining unit that calculates and sets an optimal scaling factor based on the document size, the stamp face size, and the number of continuous shots. Furthermore, the printing paper size detecting means for detecting the size of the printing paper arranged in the paper feeding unit is provided,
8. The stencil printing apparatus according to claim 7, wherein the variable magnification determining means calculates and sets an optimal variable magnification based on the document size, the stamp surface size, the number of continuous shooting surfaces, and the printing paper size. The plate making width detecting means, the continuous shooting face number setting means for setting the number of continuous shooting faces in a continuous shooting function for making a plate by arranging a plurality of original images on one stencil sheet, and the document image read by the original reading section 2. A stencil printing apparatus according to claim 1, further comprising a scaling factor determining means for calculating and setting an optimum scaling factor based on the original size, the plate making width of the stencil sheet, and the number of continuous shots. Furthermore, the printing paper size detecting means for detecting the size of the printing paper arranged in the paper feeding unit is provided,
10. The stencil plate according to claim 9, wherein the scaling factor determining means calculates and sets an optimum scaling factor based on the document size, the plate making width of the stencil sheet, the number of continuous shots, and the printing paper size. Printing device. The printing surface size setting means, the plate making width detection means, the continuous shooting face number setting means for setting the number of continuous shooting faces in a continuous shooting function for making a plate by arranging a plurality of original images on one stencil sheet, and the original reading section And a scaling factor determining unit configured to calculate and set an optimal scaling factor of the document image read in step 1 based on the document size, the stamp face size, the plate making width of the stencil sheet, and the number of continuous shots. Item 2. A stencil printing apparatus according to item 1. Furthermore, it has mounting detection means for detecting attachment and detachment of the drum unit with respect to the apparatus main body,
4. The variable magnification determining means calculates the variable magnification again and automatically resets it when the mounting detection means detects the replacement of the drum unit in the apparatus main body. , 6, 7, 8, and 11. The stencil printing apparatus according to any one of the above. Further, when the mounting detection means detects the replacement of the drum unit, the printing surface size of the drum unit newly mounted on the apparatus main body is compared with the printing surface size of the drum unit mounted so far, and the printing surface size of the two drum units is compared. Drum size comparison and determination means for determining whether or not are different,
Notification means for displaying on the panel unit that when the drum size comparison and discrimination means discriminates that the printing surface sizes of the two drum units are different, the fact that the reset scaling factor is different from the previous scaling factor The stencil printing apparatus according to claim 12, comprising: Furthermore, a mounting detection means for detecting attachment / detachment of the drum unit to / from the apparatus main body,
When the mounting detection unit detects the replacement of the drum unit, the printing surface size of the drum unit newly mounted on the apparatus main body is compared with the printing surface size of the drum unit that has been mounted so far. Drum size comparison and discrimination means for discriminating whether or not they are different;
When the drum size comparison / determination means determines that the printing surface sizes of the two drum units are different from each other, either set a scaling factor corresponding to the newly mounted drum unit or change the drum unit mounted so far. Notification means for displaying on the panel unit that the user is left with the choice of whether to continue the magnification,
The user can instruct from the panel unit which one of the scaling factors is to be selected by looking at the display on the panel unit. The stencil printing apparatus according to claim 1. Furthermore, the stencil sheet mounting detection means for detecting the detachment of the stencil sheet with respect to the apparatus main body is provided,
The magnifying power determination unit recalculates the magnifying power again and automatically resets the stencil paper when the stencil paper mounting detection unit detects attachment / detachment of the stencil paper in the apparatus main body. The stencil printing apparatus according to any one of 4, 5, 6, 9, 10, and 11.

Images