Grid Specifications - Canon CXDI-80C Service Manual

5.9 Grid specifications

Grid needs to be procured by sales companies and agents. The table below lists the
specifications of the grids that can be used.
Item
Exterior
dimensions
Loading
thickness
dimension
Dimensional
Effective area
specifications
Center position
Foil angle
deviation from
exterior
Grid density
Variation in
number of lines
in one image
Grid ratio
Focusing
distance
Performance
Grid direction
Grid surface
Other
Grid detection
Precautions
for attaching
the grid
Grid
attachment
angle
1 . O v e r v i e w
1 . O v e r v i e w
Details
383 x 307 [mm]
1.0 to 2.5 [mm]
359 x 283 [mm] or more
The center of the exterior and center
of the effective area must coincide.
Within 1 [mm] along edges of
effective area
51 to 53 [lines/cm]
Within ±1%
Determined by user
Determined by user
Determined by user
Due consideration must be given to
ensuring biological safety (EN ISO
10993-1/5/10) for the surfaces which
can be touched by the patients (for
the EU market).
The ratings of all other items must
comply with JIS 4910-2000.
The CXDI-80C Wireless does not
feature any hardware means for grid
detection. However, the
presence/absence and direction of the
grid are identified using software
means by grid stripe suppression
processing.
For a grid used in combination with the
detector, a deviation up to 1° from the
attachment angle is allowed from the
perspective of the performance of the
grid stripe suppression processing.
- 20 -
Remarks
Allowable tolerance:
0/-1 [mm]
Allowable tolerance:
0/-1 [mm]
Variation in density on
surface: Within ±5%
Selected at discretion
of user.
Selected at discretion
of user.
Selected at discretion
of user.
The attachment angle
is the relative angle of
the grid stripes to the
detector pixel rows.