Abstract: A method of marking a piece of material with information by loading an apparatus with both the information and a mirror image of the information and marking the piece of material, in accordance with both the information and the mirror image of the information, by causing the apparatus to project the light beam on to the piece of material which is sensitive to the light.

Abstract: A linkage mechanism for mounting a movable support to a fixed member for movement between a first position and a second position. The mechanism includes a first linkage arm respectively connected at each end to the fixed member and the movable support and second linkage arm having one end connected to the movable support and the other to a connector located intermediate the ends of the first linkage arm. A third linkage arm extends between the movable support and the connector. The connector controls the movable support during the movement between the first and second positions. A two link arrangement is also disclosed having a pair of linkage arms extending between a movable support and a fixed member. The linkage arms being linked by a connector intermediate their respective ends.

Abstract: A linkage system (1) for connecting a first element (2) and a second element (3) includes a linkage arm (4) respectively connected at a first end and a second end (5, 6) respectively to the first and second elements. Arm (4) includes at end (5) two spaced apart engagement formations, pin (7) and pin (8). These pins slidably inter-engage on the first element a guide slot (9) and a control slot (10) respectively. Relative movement between pins (7, 8) and the guide and control slot (9, 10) respectively provides predetermined non-arcuate relative movement between elements (2, 3).