1. A spread illuminating apparatus comprising:
a light conductive plate shaped substantially rectangular and made of a light-transmissible material;
a spot-like light source disposed close to or in contact with a light entrance surface formed at a corner of said light conductive plate;
a light reflection pattern formed on a major surface of said light conductive plate and including a plurality of grooves which each extend so as to shape a substantially minor arc with respect to said spot-like light source and which are arrayed concentrically wherein each of said grooves has its depth gradually increasing with increase in a distance from a diagonal line formed on said major surface of said light conductive plate; and
a plurality of lenticular elements made of a light-transmissible material, provided on a major surface of said light conductive plate opposite to said major surface provided with said light reflection pattern, and having their respective longitudinal directions oriented perpendicular to said plurality of grooves of said light reflection pattern.
2. A spread illuminating apparatus as set forth in claim 1, wherein each of said lenticular elements is rectangular in top plan view.
3. A spread illuminating apparatus as set forth in claim 1, wherein each of said lenticular elements is substantially trapezoidal in top plan view, and which have their respective shorter sides of two parallel sides facing said spot-like light source.
4. A spread illuminating apparatus as set forth in claim 1, wherein said lenticular elements are of various lengths measuring in a wide range.
5. A spread illuminating apparatus as set forth in claim 1, wherein said lenticular elements are mostly of a length identical with one another except a smaller number thereof being of various lengths measuring in a narrow range.
6. A spread illuminating apparatus as set forth in claim 1, wherein said lenticular elements each have a cross section outlined by a minor arc and a chord connecting two points both defining said minor arc.
7. A spread illuminating apparatus as set forth in claim 6, wherein said lenticular elements each have their respective widths and heights set such that view field angles thereof range from 5 degrees to 20 degrees.
8. A spread illuminating apparatus as set forth in claim 1, wherein said lenticular elements and said light conductive plate are formed integrally of one same material.
9. A spread illuminating apparatus as set forth in claim 1, wherein said lenticular elements and said light conductive plate are formed discretely.
10. A spread illuminating apparatus as set forth in claim 1, wherein said plurality of lenticular elements are longitudinally discrete so as to be substantially identical in size and radially provided with a certain space therebetween.
11. A spread illuminating apparatus as set forth in claim 7, wherein said view field angles ranging from 5 degrees to 20 degrees are correspondingly determined in the ratio of said height and said width of said lenticular element setting 0.045 to 0.14.
12. A spread illuminating apparatus comprising:
a light conductive plate shaped substantially rectangular and made of a light-transmissible material;
a spot-like source disposed close to or in contact with a light entrance surface formed at a side surface of said light conductive plate;
a light reflection pattern formed on a major surface of said light conductive plate and including a plurality of grooves which each extend so as to shape a substantially minor arc with respect to said spot-like light source and which are arrayed concentrically wherein each of said grooves has its depth gradually increasing with increase in a distance from an optical axis formed on said major surface of said light conducting plate; and
a plurality of lenticular elements made of a light-transmissible material, provided on a major surface of said light conductive plate opposite to said major surface provided with said light reflection pattern, and having their respective longitudinal directions oriented perpendicular to said plurality of grooves of said light reflection pattern.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An apparatus for processing printing material webs with variable web widths, the apparatus being one of a folding assembly, a turning assembly, and a web guide and comprising:
web contacting elements including at least one of rollers and cutting knives, each of which is settable on one side of the printing material web;
driven pull rollers or driven pull rollers and knife rolls extending over the web width and arranged opposite said web contacting elements;
at least one threaded spindle operatively connected for adjusting axial positions of said web contacting elements simultaneously or in succession, wherein a first portion of said web contacting elements are adjusted by a first adjustment travel and a second portion of said web contacting elements are adjusted by a second adjustment travel different than said first adjustment travel, wherein said at least one threaded spindle is divided into regions, wherein each of said regions is assigned to individual ones of said web contacting elements and said regions are configured with pitches (P) of different pitch height and pitch direction, the pitch height and pitch direction being configured in accordance with the adjustment travel of said individual web contacting elements.
2. The apparatus of claim 1, wherein said first adjustment travel is zero such that said first portion of said web contacting elements are stationary.
3. The apparatus of claim 2, wherein a third portion of said web contacting elements are adjusted by a third adjustment travel that is greater than zero and different from said second adjustment travel.
4. The apparatus of claim 1, wherein each of said first adjustment travel and said second adjustment travel is non zero.
5. The apparatus of claim 1, wherein the apparatus is a folding assembly and the web contacting elements are in a folding former plane of the folding assembly.
6. The apparatus of claim 1, wherein said web contacting elements comprise pressure rollers and cutting knives and said at least one threaded spindle comprises at least two threaded spindles, said pressure rollers being axially adjustable by at least one of said at least two threaded spindles and said cutting knives being axially adjustable by a further one of said at least two threaded spindles.
7. The apparatus of claim 1, wherein said at least one threaded spindle symmetric about a center line of said apparatus.
8. The apparatus of claim 1, further comprising a single drive for driving said at least one threaded spindle.
9. The apparatus of claim 1, further comprising at least one position monitoring device for determining the axial position of all web contacting elements.
10. An apparatus for processing printing material webs with variable web widths, the apparatus being one of a folding assembly, a turning assembly, and a web guide and comprising:
web contacting elements including at least one of rollers and cutting knives, each of which is settable on one side of the printing material web;
driven pull rollers or driven pull rollers and knife rolls extending over the web width and arranged opposite said web contacting elements;
at least one threaded spindle operatively connected for adjusting axial positions of said web contacting elements simultaneously or in succession, wherein a first portion of said web contacting elements are adjusted by a first adjustment travel and a second portion of said web contacting elements are adjusted by a second adjustment travel different than said first adjustment travel, wherein a separate threaded spindle is provided for each of the first and second adjustment travels, said apparatus further comprising a drive with gear mechanisms with a defined transmission ratio with respect to rotational speed and direction of rotation for driving said threaded spindles.
11. The apparatus of claim 10, wherein said at least one threaded spindle is symmetric about a center line of said apparatus.
12. The apparatus of claim 11, wherein said drive is a stepping motor.
13. The apparatus of claim 10, wherein said first adjustment travel is zero such that said first portion of said web contacting elements are stationary.
14. The apparatus of claim 13, wherein a third portion of said web contacting elements are adjusted by a third adjustment travel that is greater than zero and different from said second adjustment travel.
15. The apparatus of claim 10, wherein each of said first adjustment travel and said second adjustment travel is non zero.
16. The apparatus of claim 10, wherein the apparatus is a folding assembly and the web contacting elements are in a folding former plane of the folding assembly.
17. The apparatus of claim 10, further comprising a single drive for driving said at least one threaded spindle.
18. The apparatus of claim 10, further comprising at least one position monitoring device for determining the axial position of all web contacting elements.