Zebra KR203 Specifications download pdf (Page 36)

Media

Designing Your Own Media Dispensing System

P1028247-001 Rev. B KR203 Hardware Integrator Guide 10/26/2010

Designing a Roll Support

The design elements needed for a good media roll support are:

• Simple design with no loose parts that can get misplaced, installed incorrectly, or

require special techniques that can, when done incorrectly or carelessly, have the

operator drop the media in the kiosk.

• Minimal drag. Do not use wires, cables or bars as a roll holder - all of these cause

the roll to stop and start and rock back and forth. Narrow radius roll supports case

these behaviors to a lesser extent. Some media vendors use roll cores made of

fiberboard that can have seams. The KR203 Roll Support accessory (page 49)

minimizes the media contact area (only makes contact with the outside edges)

and a large enough radius to smooth over seams. The larger the roll (more mass),

the greater the effect it has on drag (see "Large Media Roll Adapter – P1026858"

on page 60).

• Leave plenty of access room to load media when designing the area for your roll

support. Leave additional clearance for the roll swinging on the support and hands

that hold the media to load it.

Designing Media Guides

The media guides need to have a minimum radius of 10 mm. The surface should be

smooth and not touch the edges of the media (causes drag or edge damage). The media

should only touch radius surface and not the edge of the radius for all roll sizes that may

be used (full or nearly empty). See the "Wall Mount Roll Holder – P1014123" on page 47

and the "Universal Roll Holder – P1014125" on page 53 side views to illustrate roll size

and contact with a media guide.

Designing for Fan-Fold Media

Fan-fold media creates unique challenges. It has square edges that can get caught and

the stack can fall into other components and cabling.

Make a tray to hold the fan-fold media unless it is being pulled straight up. Always test and

observe with the actual media. Fan-fold media can un-fold erratically and act differently at

the beginning and end of the stack.

Design a tray a little higher than the height of a full stack of media. Fan-fold media tray

should keep the media stacked and never allow the media to be pulled into the kiosk.

When using a media guide, the guide should ideally be twice the distance of the length of

the media stack away from the media guide and aligned to the center of the stack. This

allows the media to completely unfold and minimizes the chances of having it bind in other

components or printing multiple receipt or tickets.

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Zebra KR203 Specifications Page 36