Occasionally the cookie does not print centered. Inconsistent print start positions. (Eddie).

Occasionally the cookie does not print centered. Inconsistent print start positions. (Eddie).

Eddie will center print images on your cookies automatically.  When using the carousel,  Auto Centering works best on perfectly round cookies which are all the same size.  If your cookies are not centered, you can adjust the print position right or left or up and down using horizontal and vertical offset settings on the alignment tab of Print Hub or the Mac Config Utility (See the screen capture below). However, if you have inconsistent sizes, no amount of adjustment will help.  It is best to sort the similar sized cookies together and adjust the template size to match. 

Centering Scan Enabled/Checked.  Horizontal and vertical offset affect the print position with the Centering Scan checked OR unchecked.  The difference is that with Centering Scan enabled, Eddie attempts to find the start position automatically.  You can then add or subtract from that print start position using Horizontal or Vertical Offsets.

----Recommended for Circular cookies

Centering Scan Disabled/Unchecked.  The printer will no longer perform the centering scan with this setting unchecked.  The start position is whatever the factory calibrated zero point is.  You can then add or subtract from that print start position using Horizontal or Vertical Offsets. It can be more reliable because the printer doesn't try to interpret your cookie size, but you must ensure that the cookie is placed in the exact same position every time.  The carousel will do this for you.  If you cannot use the carousel due to your cookie size or shape, you will need to switch to manual mode by disconnecting the carousel and, most likely, using a custom tray.  See the tips below. 

----Recommended for Non-circular and non-uniform-shaped cookies.

Tips for Centering Scan Unchecked.
  1. When you turn off the centering scan, you must place the cooking in the exact same place on the tongue/platform every time.  This is hard to do by just eyeballing the position on the tongue.  When the cookie is not placed in the same place (either left to right or front to back) every time, it will look like the image is not centered and jumping around inconsistently. 
  2. The Milton tray or a DTM tray will help you place the cookie in the same spot every time.   Please review this tutorial on how to print centered every time using a custom tray. 
  3. The cookies should be a consistent size for this option to work. 
  4. If you do not have a tray, you can attach a piece of thick (.08" or thicker) cardboard to the platform/tongue that is larger than your cookie size.  Make sure it is attached firmly, so it will not move around.  Print your design with no cookie in place.  Note the location of the print on the piece of cardboard.  Now place your cookie centered on the print location.  Print again. 

 If for some reason the prints are still not centered, The following items can also affect centering.

1. Feed/Reverse Speed.  If the cookie moves during the scanning process before each print, it may not print centered.  You can slow down feed and reverse speed.  This will slow down the scanning process making it less likely for the cookie to move. To adjust these values, open PrintHub - choose the Printer Settings Tab - Advanced Settings.  Try setting the speeds to "10".

2. Template Size/Page Size.  Measure your cookie.  Make sure the template size and page sizes is the same or slightly larger than the cookie. (Page Size and Template Size in BarTender should always be the same) 

For example, if the template/page size in BarTender is smaller (3.0") and the cookie is 3.5", Eddie will find the size of the cookie using the cookie size sensor and start printing at the front edge of the cookie, but it will never reach the back of the cookie because the size you are sending the printer is 3.0".  The image will appear off-center in this case because the template size is 1/2 inch short. 

If you make the template size larger than the cookie, it will overprint/overbleed slightly, but you will ensure complete cookie coverage.

Example: 3.0" template on 3.5" cookie

You can use the same process to print to any shape, such as a square template over a heart-shaped cookie.  The image/design shape does not need to match the cookie shape. It is OK to print onto the cookie platform or off the edge of the cookie.  The printer filters will take care of any extra ink overspray.  This works best for printing patterns where precise alignment is not critical.  For images with a white background, this method does not work. 
Example: Square pattern template printed to heart-shaped cookie

3. Ensure that bright light is not shining into the printer.  This can disrupt the cookie sensor's ability to detect the cookie size for centering purposes.  Close the tinted front lid or move the printer away from the light source.

4. Install the tinted cover.  Make sure you install the tinted cover.  It helps block any excess light from affecting the cookie sensor.
5. Perform a tray calibration.  If the tray is out of calibration, it can affect the placement of the cookie on the platform/tongue.  Press and hold Load/Unload + Pause for 3 seconds to start the calibration. 

6. Ink overspray mist may be interfering with the cookie size sensor.  Clean the cookie sensor with a damp cloth. It may also be beneficial to clean the filters, as shown in Section 6C of the manual.  A clogged filter can cause ink overspray mist to build up more quickly.  

Article ID: 051721