APS SS205-V4+ LV - Mechanical and Housing; Designing the Door; The Easy Door Opening System; Overall Dimensions and Fixing Points

Advanced Printing Systems
SS205-V4+ LV - Technical Manual - Rev B Page 21
7. MECHANICAL AND HOUSING
7.1. Designing the Door
The function of the door is to bring the rubber roller to the chassis’ window entrance and to make it
follow the external path of the chassis’ window.
Given the shape of the chassis and the example in the mechanical drawing section (end of the
specification), the cover is fairly easy to design.
In order to keep a good alignment, it is strongly advised to keep the rubber roller fully floating inside
the cover to compensate any tolerance problem inside the cover.
Moreover this play must be present in order to allow the rubber roller to follow the shape of the
chassis.
However, the cover must ensure a fairly good lateral alignment of the roller gear and chassis’
window entrance in order to avoid damage of roller teeth that might cause abnormal friction inside
gear box.
7.2. The Easy Door Opening System
Because the rubber roller is only referenced to the chassis and has no dependence on the cover, the
mechanism is very reliable. To achieve this reliability, the rubber roller must be strongly locked
inside the chassis.
To avoid any twist, and mechanical stress on the cover and more generally on the customer plastic, so
increasing the reliability and quality, A.P.S developed a unique and patented feature to ease the
opening of the door, that makes the mechanism very easy to open, and does not require any access to
the cover’s sides, giving more flexi- ability and ergonomics to the customer design.
This is achieved by clipping an internal lever inside the cover that pushes symmetrically on both
sides of the mechanism. So the mechanism’s shape has been optimized to concentrate the effort
locally and always refer this effort to the chassis.
Doing so there is no need to have access to the cover side, giving more freedom to design the cover,
and allowing reducing the width of the unit.
Please contact A.P.S for any assistance in designing this lever.
7.3. Overall Dimensions and Fixing Points
See attached drawing or ask A.P.S. for additional mechanical details.
The printer has to be fixed using its own points as described on the overall dimensions drawing,
avoid any kind of deformation or torsion, if not, printing quality and printer's life will be drastically
reduced.