Imposition Types
Summary
The imposition page is used to create the fixed impositions which are used in the production description already. These impositions can relate to the product itself or to the machines and tools used in the production. There are no fixed rules for creating an imposition type, although within several sub-industries some impositions are standard.
For instance, a normal commercial printer will often have some impositions where 16, 8 and 4 pages are imposed under different circumstances. An imposition for 16 pages is not one and the same regardless of printing machine.
Some details of paper and post-press treatment will also change the specifics of the sheet imposition. Thus the library of PrintVis imposition types may well contain several imposition options for the same number of pages.
In a JDF-based workflow, imposition types are mandatory to be used on each sheet/ job item, in case a prepress system is involved.
The Imposition Page holds information which governs the imposition onto the printing area in different ways and forms.
Field Description
FastTab General
Code | The Code field of the imposition card in question Code is the identification field for the Imposition Type. Length is max. 20 characters. |
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Description | A meaningful description that explains to the user what this is. | ||||||||
Leafs Length | Quantity of pages (1-sided->Leafs) to be imposed upwards on the printing area. This quantity helps calculate the total no. of pages back and front on this imposition. | ||||||||
Leafs Width | Quantity of page (-1sided->Leafs) to be imposed across the printing area. This quantity helps calculate the total no. of pages back and front on this imposition. | ||||||||
Pages | No of physical pages on the Sheet. This field is not editable. |
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Description 2 | A meaningful description that explains to the user what this is. | ||||||||
Orientation | The orientation is mainly a JDF field and signals the text
orientation on the printed item. The options are degrees to vertical
text as seen from the front of a printing machine when the sheet goes
in. 90 and 270 will be sideways whereas 0 and 180 will be normal and
up-side-down placement. · 0 · 90 · 180 · 270 |
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Flip | This field is to set (or set by default from a folding type which
are flipped by definition) if the imposition should be turned in the
sheet. It doens't matter if this means turned by 90° or 270°. This field can be used in combination with the Orientation Field. For example if a prepress system (JDF) complains that page 1 is on the back side of the sheet. |
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Folding Catalog Code (CIP4) | Choice if relevant of folding method which is intended for the imposition in question. The folding has great impact on the imposition. The choices in the underlying table refer to JDF folding codes . | ||||||||
Folding Items Depth | This field states if relevant how many separate folding sheets there is upwards on the printing area. | ||||||||
Folding Items Width | This field states if relevant how many separate folding sheets there is across the printing area. | ||||||||
Folding Pages | No. of physial Pages on the Folding Sheet. | ||||||||
Type | Type can be one of the following options:
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Picture | With this field it is possible to assign a picture to the imposition
type. To assign a picture just click on the field and a dialog shows up
to upload a picture from your computer. In case a Folding Catalog Code is selected the picture is by default the Folding Catalog picture. Default picture/drawing on specification card PrintVis creates a drawing (if possible for a non-nested layout) on the specification page, if no imposition type is selected. In case an imposition type is selected with a Folding Catalog Code assigned, the folding catalog picture is being displayed by default without any extra setting. Based on the fields "Always Show Picture/Drawing" it can be defined whether the standard drawing should be displayed on the specification page or the picture that is stored for this imposition type. |
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Always Show Picture | If this field is set to "TRUE" (switched on) and a picture is
assigned to the selected imposition type, the specification card will
display the picture that is stored on this imposition type. This is a recommended setting in case PrintVis is not able to show a drawing (for example) of a nested layout. It can be also used to show a product picture to make sure the user has chosen the right imposition type for the calculated product. If this field is set to "FALSE" (switched off) the specification card will display the standard drawing even if a Folding Catalog Code is selected. This is a recommended setting in case a the imposition type is being setup with a Folding Catalog Code and the user want to proof the setting on the imposition will create a drawing that looks ok. Some Folding Catalog Codes have an orientation that is turned by default and this could lead to a wrong setup on the imposition type setup. Also if the product is too big for the sheet this is visualized only if the drawing is displayed instead of the picture. |
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Always Show Drawing | If this field is set to "TRUE" (switched on) the specification card
will display the standard drawing even if a Folding Catalog Code is
selected. This is a recommended setting in case a the imposition type is being setup with a Folding Catalog Code and the user want to proof the setting on the imposition will create a drawing that looks ok. Some Folding Catalog Codes have an orientation that is turned by default and this could lead to a wrong setup on the imposition type setup. |
Examples for Imposition Drawings and Pictures
Imposition type without a picture that was assigned manually, but a Folding Catalog Code selected that contains a default picture.
Always show picture/drawing = false
Result:
Imposition type with a picture that was assigned manually, No Folding Catalog Code selected
Always show picture/drawing = false
Result: PrintVis is not able to do a nested drawing and the flat size and no. up is greater than the sheet size.
Always show picture = true
Always show picture/drawing = false
Result: This is the recommended setting for nested layouts used (e.g. for folding carton products).
How to Remove Picture
If there is an Imposition Picture that is desired to be deleted, then click on Related (in top menu ribbon) -> Imposition -> Remove Picture.
A message will pop up to confirm that the Imposition Picture should be deleted. If "Yes" is selected, then it will be deleted. If "No" is selected, then the picture will not be deleted.
FastTab Transfer
Transfer margins | This field determines whether or not the information with regards to these fields on the printing item record should be transferred to the JDF file when generated from the estimation. If not ticked, the Prepress Workflow system is expected to fill out the blanks from its own library or calculation. |
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Stripping parameter Fields | Stripping parameters are the fields for various trimmings, bleeds
etc. which will impact the size of the printed object on the substrate.
Each value will add information and possibly add to the size so the
object to print becomes larger. The fields include: Trim left: Value for the trim margin on the left side for unfolded products. It will not be in use if the job item is folded! Field is not editable if folding item length or width >1. The value will be copied to the spine field on the job item. Apogee and Prinergy reading the spine value from a JDF for the left trim of unfolded products. Milling Depth: How much paper to add for binding in the binding of a product. Overfold: The distance of extra paper needed for a bindery machine to grip the job item when binding the product. Bleed: Not adding an object size change but will add to the area on which to print, so more ink needed. |
Transfer format | This field determines whether or not the information with regards to these fields on the printing item record should be transferred to the JDF file when generated from the estimation. If not ticked, the Prepress Workflow system is expected to fill out the blanks from its own library or calculation. |
Format 1/2 | This field states the width length of the final format of the printing item which intended to be imposed by this Imposition Type. This value will serve as an aid for filtering in the imposition library. |
Transfer Colors | This field determines whether or not the information with regards to these fields on the printing item record should be transferred to the calculation. |
Colors front/back | Determine the no. of colors, if this imposition type is selected and value set to be transferred. |
Format 2 | This field states the depth of the final format of the printing item which intended to be imposed by this Imposition Type. This value will serve as an aid for filtering in the imposition library. |
Pages with Print | This field will calculate how many pages with print this imposition code has. If there are 8 leaves on the imposition in field Pages (on General Pane) then this field will be 16 pages with print, provided there is print on both sides. |
Transfer Sheet Info | This field determines whether or not the information with regards to these fields on the printing item record should be transferred to the calculation. |
Sheet length/width | Determine the sheet size (section/cut-off size if web paper), if this imposition type is selected and value set to be transferred. |
Strip | In this field you can determine a fixed Strip size which must be used in the imposing. |
Placement, Strip | In this field you can determine the placement of the strip for this Imposition Type. |
Gripper Edge | In this field you can determine the placement the area of the gripper for the press. |
FastTab Info
Production | Enter the number of production items: e.g. Double Production = 2; Triple production = 3 ... |
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Double Production | Enable if Double Production |
Pagination, Front | If applies, enter which pages are dedicated to this imposition type, e.g.: 1,16,13,4,8,9,12,5 |
Pagination, Back | If applies, enter which pages are dedicated to this imposition type, e.g.: 2,15,14,3,7,10,11,6 |
Plates Length | If applicable, enter the plate's length. This field is used for impositions for very large machines where more plates are used on one cylinder to cover the printing area. This would often be Newspaper printing machines. The field value should be how many plates are used along the length of the cylinder to cover it with plates. Do not include blind plates. |
Plates Width | If applicable, enter the plate's width. This field is used for impositions for very large machines where more plates are used on one cylinder to cover the printing area. This would often be Newspaper printing machines. The field value should be how many plates are used along the width the cylinder to cover it with plates. |
Signatures per Stroke | If applicable, enter the signatures per stroke. in this field you can write the information of how many signatures or folding sheets 1 printing rotation or stroke of a sheet fed printer will yield. |
External Imposition Template | If applicable, enter the template code. This is used for example if a JDF prepress workflow from Kodak is connected to PrintVis via JDF |
External Imposition Description | If applicable, enter the template code. This is used for example if a JDF prepress workflow from Kodak is connected to PrintVis via JDF |
FastTab Automation
Priority | Setup a priority number: In case the "Auto Use" field is enabled,
PrintVis filters, which imposition types might fit for a sheet. Based on
the priority number the one with lowest priority number will be
assigned. This means for example use prio 1,2,3 for imposition types
with only 1 up; 10, 20, 30 for imposition types with 2-up; 100,200,300
for imposition types with 4-up.
In the above example the imposition type 16p-1up would be automatically assigned to the sheet. |
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Auto Use | Enable if auto selection of imposition types is desired and make sure the field "Priority" is setup and tested well! |
FastTab Advanced Filtering
Assisted Lookup on Imposition Type Field
The field above will be used for some advanced filters that takes place for the "Auto Use" function and for the Assisted Lookup in the imposition types field on the job items:
Open the assisted lookup here:
Assisted lookup page:
Imposition Range Setup
This setup is typically used for web presses for newspapers etc. when it is necessary to use more printing units to capture a certain no. of pages.
The example below shows an imposition type example of a 32 pages for a newspaper press and 4 printing towers/units are required to print the total of 32pages in double production (2x8pages per tower) and then being gathered and folded in one folding unit.
Range Setup:
With this setup, PrintVis will create 3 residual sheets from the first sheet, in total 4 sheets of 8 pages double production.
Calculation Units Setup:
Make sure for this to setup a list if calculation units that will pick in the row the next tower for each residual sheet.
The result will be
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1 sheet with 2x8p using list of units L_6000-2
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residual sheet 1 with 2x8p using list of units L_6000-3
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residual sheet 2 with 2x8p using list of units L_6000-4
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residual sheet 3 with 2x8p using list of units L_6000-5
PrintVis Folding Catalog
The PrintVis folding catalog is a list of folding schemes that is provided by the JDF Specification from the CIO4 organization. All the default codes are predefined and known in in a JDF environment and typically used for commercial sheet print.
If there are special folding schemes in use in your company, you can just create additional entries and provide the required information in the existing fields. This is common for example for web printers and their folding units.
If the table is empty, the basic intialisation of PrintVis hasn't run (new company) . Come back later after setup of the PrintVis geenarls setup etc. has been made.
If it does not show any pictures hit the action "Create PrintVis Standard Bitmaps".
The list contains information about how many leaves are existing in the widths and in the length/height of the folding sheet and if the pages of the folding sheets are turned by default meaning the page is not standing upright, which is the default.
The Folding Codes sub page contains additional information for the selected folding code in the upper table. The information is about:
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The processing direction of the sheet into the folding machine
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After how much travelling of the sheet in percent a fold is being processed
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About the folding direction which can be: up, down, left, or right.
Field | Description |
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Code | The code for the current line. It is build from: "F<No. of pages for the folding sheet>-<Increment number per no. of pages>" |
Picture Code | Picture code from the PrintVis Bitmap Table. For your custom folding
schemes it is possible to add pictures to this table. Pictures selected on a folding scheme are displayed by default on the specification page of a case. |
Horizontal | If not enabled, the pages are standing upright within the print section in the paper processing direction into the press. If enabled, the pages are turned 90 degrees clockwise within the print section in the paper processing direction into the press. |
X | No. of leaves in Y direction (width). |
Y | No. of leaves in Y direction (length/height). |
Front Overfold Factor | This is a factor that is being multiplied with the given front overfold value to calculate the usage of the sheet for the product. |
Back Overfold Factor | This is a factor that is being multiplied with the given back overfold value to calculate the usage of the sheet for the product. |
Fold From | The processing direction of the sheet into the folding machine. |
Fold Relative Travel | After how much travelling of the sheet in percentage a fold is being processed. |
Fold To | The direction of the folding sheet in the folding machine for this fold. Options are: Up, Down, Left, Right. |
An imposition type can contain more than 1 up of the folding sheet.
Example for a folding scheme for a folded 4p cover: F4-1. This could be existing 4x on a pages that can handle 16p of the given size.