1. A power trowel including
(a) a frame including a hub;
(b) a pole having
(i) a distal end shaped to be grasped as a handle,
(ii) a proximate end attached to said frame,
(iii) a longitudinal axis extending from said distal end to said proximate end, said pole rotatable along its entire length about said longitudinal axis;
(c) a plurality of spaced apart blades pivotally mounted on and radially extending from said hub, each of said blades having a lower surface area;
(d) a transmission assembly mounted on said frame and operatively associated with said blades to pivot and alter the cant of said blades;
(e) a first cable for activating said transmission assembly to pivot and alter the cant of said blades;
(f) a control assembly interconnecting said proximate end of said pole and said cable, said control assembly including a component connected to and extending outwardly from said proximate end of said pole at an angle to said longitudinal axis such that when said handle is rotated in a selected direction, said component is laterally displaced with respect to said longitudinal axis and activates said control assembly to displace said cable to activate said transmission assembly and pivot and alter the cant of said blades;
(g) an engine mounted on said frame, having a throttle, and operatively associated with and rotating said hub; and,
(h) a second cable interconnecting said throttle and said pole and including an end attached to said proximate end of said pole such that when said pole is rotated about said longitudinal axis in a direction opposite said selected direction, said end of said second cable is laterally displaced with respect to said longitudinal axis and said second cable is displaced to adjust said throttle.
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. A method for exposing a photosensitive printing plate, the method comprising:
mounting the printing plate to a holder;
imagewise applying a non-permanent photomask to a surface of the printing plate using a coating applicator;
establishing relative motion between the holder and the coating applicator; and,
exposing the printing plate to actinic radiation through the non-permanent photomask without removing the printing plate from the holder wherein applying the non-permanent photomask comprises applying a hydrophobic ink to the printing plate.
2. A method as in claim 1, wherein applying the non-permanent photomask comprises ejecting an inkjet droplet pattern from an inkjet printhead.
3. A method as in claim 2, wherein the imagewise applying comprises applying an ink comprising a substantially non-volatile solvent.
4. A method as in claim 3, wherein the substantially non-volatile solvent comprises a wax.
5. A method as in claim 3, wherein the substantially non-volatile solvent comprises an oil.
6. A method as in claim 3, wherein the imagewise applying comprises at least partially curing the non-permanent photomask on the surface of the printing plate before exposing the printing plate to the actinic radiation.
7. A method as in claim 6, wherein the non-permanent photomask remains liquid during exposing the printing plate.
8. A method for exposing a photosensitive printing plate, the method comprising:
mounting the printing plate to a holder;
imagewise applying a non-permanent photomask to a surface of the printing plate using a coating applicator;
establishing relative motion between the holder and the coating applicator; and,
exposing the printing plate to actinic radiation through the non-permanent photomask without removing the printing plate from the holder wherein the non-permanent photomask remains liquid during exposing the printing plate and the method comprises removing the non-permanent photomask without de-mounting the printing plate from the holder wherein the removing comprises using one of a blanket cleaner and a water jet.
9. A method for exposing a photosensitive printing plate, the method comprising:
mounting the printing plate to a holder;
imagewise applying a non-permanent photomask to a surface of the printing plate using a coating applicator;
establishing relative motion between the holder and the coating applicator; and,
exposing the printing plate to actinic radiation through the non-permanent photomask without removing the printing plate from the holder wherein the non-permanent photomask remains liquid during exposing the printing plate and the method comprises removing the non-permanent photomask without de-mounting the printing plate from the holder wherein the removing comprises applying printing ink to the printing plate.
10. A method for exposing a photosensitive printing plate, the method comprising:
mounting the printing plate to a holder;
imagewise applying a non-permanent photomask to a surface of the printing plate using a coating applicator;
establishing relative motion between the holder and the coating applicator; and,
exposing the printing plate to actinic radiation through the non-permanent photomask without removing the printing plate from the holder;
wherein the non-permanent photomask remains liquid during exposing the printing plate and, the non-permanent photomask comprises a hydrophobic liquid.
11. A method as in claim 10, wherein the hydrophobic liquid comprises a hydrophobic liquid ink.
12. A method as in claim 11, wherein the non-permanent photomask comprises a non-adherent inkjet dot pattern.
13. A method as in claim 11, comprising providing a baffle coated with an adsorptive material to shield the printing plate from scattered light during the exposing.
14. A method for exposing a photosensitive printing plate, the method comprising:
mounting the printing plate to a holder;
imagewise applying a non-permanent photomask to a surface of the printing plate using a coating applicator;
establishing relative motion between the holder and the coating applicator; and,
exposing the printing plate to actinic radiation through the non-permanent photomask without removing the printing plate from the holder:
wherein the non-permanent photomask remains liquid during exposing the printing plate, the non-permanent photomask comprises a hydrophobic liquid, and the hydrophobic liquid comprises a hydrophobic liquid ink, the method comprising removing the non-permanent photomask after the exposing wherein the liquid ink remains liquid during the removing of the photomask.
15. A method as in claim 14, comprising:
performing the imagewise applying while moving the coating applicator relative to the holder; wherein the non-permanent photomask comprises a non-adherent inkjet dot pattern and the coating applicator comprises an inkjet printhead; and,
subsequently removing the non-permanent photomask from the surface without de-mounting the printing plate from the holder.
16. A method as in claim 14, comprising:
at least partly curing the non-permanent photomask before the exposing of the printing plate; and,
removing the non-permanent photomask from the surface without de-mounting the printing plate from the holder.
17. A method as in claim 16, wherein:
removing the non-permanent photomask from the surface comprises using at least one of a blanket cleaner, a water jet and the process of applying printing ink to the printing plate.