Abstract: A system (11) includes: (a) a tray (44), for placing thereon a sample including a first flowable-matter substrate (FMS) (69), (b) a printing assembly (22), to print image, made from edible substance, on a second FMS layer (68) formed on first FMS (69), (c) an axis mechanism (10), to mechanically support tray (44) and control a distance (41) between the sample and printing assembly (22) by moving tray (44) with the sample along an axis, (d) a support member (55, 56), coupled to the printing assembly (22) to mechanically support the printing assembly (22), and (e) vibration dampers (37, 45, 111), placed between (i) the printing assembly (22) and (11) at least one of the axis mechanism (10), tray (44) and the sample, and configured to suppress vibrations between (i) at least one of the printing assembly (22), the axis mechanism (10) and the tray (44), and (ii) the sample.

Abstract: A system includes a tray (44), a printing assembly (22), an axis mechanism (10), a coupling mechanism (88) and a cover (54). Tray (44) configured for placing thereon a sample (70) including a first flowable-matter substrate (FMS) (69). Printing assembly (22) configured to print an image of edible substance on a second FMS layer (68) formed on first FMS (69). Axis mechanism (10) configured to control a distance (41) between sample (70) and printing assembly (22) by moving tray (44) with sample (70) along a vertical axis. Coupling mechanism (88) configured to couple between axis mechanism (10) and tray (44). Cover (54) configured to cover axis mechanism (10). Cover (54) has a front surface (77) that faces sample (70), and configured to block a spillage of at least one of the first and second FMSs (69, 68) from wetting the axis mechanism (88).

Abstract: A motorized vehicle having a wheel retraction apparatus, comprising: a plurality of rear wheels and at least one front wheel; a lower chassis having a foot surface mounted thereon; and a wheel retraction apparatus mechanically connected to said lower chassis and set to extract and retract said plurality of rear wheels from and towards said lower chassis and to fixate said plurality of rear wheels in a plurality of different widths from one another; wherein a distance between an axis passing through the centers of said plurality of rear wheels and said at least one front wheel is reduced when said plurality of rear wheels are retracted towards said lower chassis.

Abstract: A motorized vehicle having a wheel retraction apparatus, comprising: a plurality of rear wheels and at least one front wheel; a lower chassis having a foot surface mounted thereon; and a wheel retraction apparatus mechanically connected to said lower chassis and set to extract and retract said plurality of rear wheels from and towards said lower chassis and to fixate said plurality of rear wheels in a plurality of different widths from one another; wherein a distance between an axis passing through the centers of said plurality of rear wheels and said at least one front wheel is reduced when said plurality of rear wheels are retracted towards said lower chassis.