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Chapter 5 Libraries 5-87 Comment: Any appropriate comment. * Up to 40 characters can be entered. Brightness: Threshold value to see whit e or black of the inspection point; Higher score than this represents white, lower …

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Chapter 5 Libraries
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5-1-5-14 Bad Marks
Bad Mark Process
Logic Mark On Mark Off
Positive Skip Place
Negative Place Skip
Mark Color
For easy recognition, mark the bad mark in silver or white for glass epoxy boards, and mark in
black for ceramic boards.
There is no restriction in shape. The size would be φ2.0mm to φ5.0mm.
The mark color should be in contrast with the surrounding board.
Board Mark color
Glass epoxy (dark green) White or silver
Ceramic (white or pale green) Black
Creating Bad Mark Data
Window:
File>Open: Opens the list of existing bad mark data. Select data and click
<Open> button. To delete data, select data and click <Delete>
button.
File>Save As…: Saves the current file with a name and comment. Comment is not
necessarily required.
File>Save: Overwrites the current file.
File>Exit: Closes the Bad Mark Data dialog box.
Image Type: Click <Mode> button to switch [Bad Mark (white)] and [Bad Mark
(black)].
Mark Code: To create new data, enter a desired code. To edit existing data, click
<Open> button to select data.
* Up to 38 characters can be entered.
Mode selecting combo box
Chapter 5 Libraries
5-87
Comment: Any appropriate comment.
* Up to 40 characters can be entered.
Brightness: Threshold value to see white or black of the inspection point;
Higher score than this represents white, lower black. (standard :
127)
Search Area X: Length of the inspection area in the X (horizontal) direction.
Usually enter 1 to 2mm.
* Increment : 0.01mm
Search Area Y: Length of the inspection area in the Y (vertical) direction.
Usually enter 1 to 2mm.
* Increment : 0.01mm
S
earch area X
Search area Y
Bad mark
Note: Define smaller search area than the bad mark size; The mark location may vary from board to
board.
Action:
① In the Bad Mark Data dialog box, select the bad mark color (white/black) for [Image
Type] by clicking <Mode> button.
② Enter all the required data.
③ Click Prearrange>Teach&Move Pallet to teach the coordinates of the bad mark center.
④ Adjust the Gain, Offset, and Inside/Outside Light setting so the bad mark image is shot
clearly.
⑤ Click <Image Test> button to execute image test. Confirm the test ends in success.
⑥ The bad mark should ideally score Measure=255 for white color, and Measure=0 for black
color in the image test. Re-adjust the illuminator setting and redo the image test until the
score approaches 255/0 as possible.
⑦ Move the main teach camera to capture the resist part around the bad mark. Adjust the
Inside/Outside Light setting and execute image test until Measure=0(for white color)/
Measure=255(for black color) can be obtained.
Note: If Measure=255 and 0 cannot be obtained even the illuminator setting is properly adjusted, add
the Measure value for the bad mark and the resist part, divide the value by 2, and enter the
value to [Brightness] of the Bad Mark Data dialog box.
⑧ Save the data.
For white bad marks, when the brightness in the specified search area at "Search Area Y" and
"Search Area X" is more than "Brightness", OK is issued.
For black bad marks, when the brightness in the specified search area at "Search Area Y" and
"Search Area X" is less than "Brightness", OK is issued.
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5-1-6 Nozzle Library (Nozzle Data)
Menu: Program>NozzleData
Progarm>ComponentData>NozzleData
Register nozzle-related data.
Window:
File>Save: Saves the edited data.
Tool>AirPressure: Measures the vacuum pressure of each nozzle. For information, see
Chapter 8.
Nozzle: Nozzle name.
Example: NOZZLE_P004, NOZZLE_P020
* Up to 14 characters can be entered.
Comment: Any annotation for the nozzle.
* Up to 20 characters can be entered.
Nozzle No.: Number used in a nozzle name. Serves to link the nozzle library and
the component library. 1 to 20 are used as standard nozzle numbers.
Example: NOZZLE_P004 -> 4, NOZZLE_P020 ->20
Choke Threshold: Threshold for detecting nozzle choking. Use the default setting
normally.
* Increment : mmHg
Pick Threshold: Threshold for detecting improper pickup. Use the default setting
normally.
* Increment : mmHg
Directionality: For a non-directional nozzle, enter “Free” (default). For a directional
nozzle, enter “Fixed” or “Fixed (reversible)”.
“Fixed”: Non-reversible type. Component pickup is possible only at a
pre-determined angle.
“Fixed (reversible)”: Reversible type. Component pickup is possible
when the nozzle is rotated 180 degrees from the pre-determined
pickup angle.
Inner Diameter: Nozzle inner diameter.
* Increment : 0.01mm
Vacuum Check: Specify whether to perform abnormal pressure detection
(Enabled(Pickup/Choke)/Disabled/Enabled(Choke Only)). When
“Enabled(Pickup/Choke)” is specified, the system checks for nozzle
choking or pickup error by inspecting the vacuum pressure when
exchanging nozzles or picking up/placing the component. When "
Enabled (Choke Only)" is specified, if the vision process has been
successfully done, placement will be performed regardless of the
pickup pressure. This function is useful when the pickup pressure is
not stable because the pickup surface is not flat.
Special Nozzle: Normal: normal nozzle
Side Y: side pickup nozzle, offset in Y direction
Side X: side pickup nozzle, offset in X direction
To use a side pickup nozzle, enter the offset value in the [Side Pickup
Offset] cell.
Delay for Vacuum ON: For pickup with a Side Pickup Nozzle, set the delay time after the
completion of the Side Pickup Offset to start suction.
Range: 50 to 100 ms
To enable this function, select “Side X” or “Side Y” in the [Special
Nozzle] cell.
Grip Length: Specify the length of the gripping part of a special nozzle
(Side pickup nozzle).
Side Pickup Nozzle: 3.0 to 5.5 mm