Abstract: A leading edge side part 10a of a printing plate 10 can easily be inserted into a gap L1 formed between a plate guide 15 positioned adjacent to positioning pins 11 and a leading edge side clamping base 51 because the gap L1 is formed in a thickness slightly thicker than the printing plate 10. Restoring force caused by flexure of the printing plate 10 allows the leading edge side part 10a thereof being inserted into the gap L1, the restoring force being generated when a tail edge side part 10b of the printing plate 10 is in contact with a contact member 2.

Abstract: A spiral gear 7G formed on an adjusting bolt 7 is engaged with a spiral gear 8G disposed around a shaft 8 for diagonal adjustment. The shaft 8 is rotatably supported in a block 16 which is fixed to the bottom of the tail edge side clamping base 3, and the shaft 8 is screwed into the hole of a block 18 provided to a plate cylinder 60 and passes therethrough. The block 18 is supported so as not to be moved in the directions shown by the arrows 92, 93 relative to the cylinder plate 60. Diagonal image adjustment is carried out by moving the tail edge side clamping base 3 in the directions shown by the arrows 92 or 93 as a result of rotating an adjusting knob 7H of the adjusting bolt 7.

Abstract: A leading edge side shaft 6, a tail edge side shaft 12 and a pulling shaft 14 are interlocked with one another through gears. The gears are rotated by using rotation of the plate cylinder. A leading edge side part 10a of the plate 10 is clamped with a leading edge side clamp 4 in accordance with the rotation of the leading edge side shaft 6. Thereafter, a tail edge side part 10b of the plate 10 disposed on the cylinder surface of the plate cylinder 60 is clamped with a tail edge side clamp 5. The plate 10 is pulled in a plate tensioning direction as a result of moving the tail edge side clamp 5 in the direction of the arrow 90 in accordance with the rotation of the pulling shaft 14.

Abstract: A frequency characteristic of a surface acoustic wave filter having at least a first transducer and a second transducer is determined by a product of a frequency amplitude characteristic of the first transducer and that of the second transducer so that the electrodes of the both transducers are formed in such a way that third harmonics band in the frequency characteristic of the first transducer is shifted out that of the second transducer in order to prevent third harmonics.