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A light tilting apparatus usable with an extendable light. In one embodiment, a mobile lighting system includes a tiltable light assembly mounted to an extendable tower on a trailer. The tiltable light assembly includes one or more lights fixedly mounted to a tilting member pivotably mounted to the

A light tilting apparatus usable with an extendable light. In one embodiment, a mobile lighting system includes a tiltable light assembly mounted to an extendable tower on a trailer. The tiltable light assembly includes one or more lights fixedly mounted to a tilting member pivotably mounted to the extendable tower. A linkage operably connected to the tilting member at one end has a catch on a distal end. A linkage regulator attached to the extendable tower has a guide portion for the linkage to pass through as the extendable tower is extended and retracted. The linkage regulator is configured to engage the catch on the distal end of the linkage when the extendable tower reaches a preselected extension position restricting further motion of the linkage in the direction of tower extension. The linkage causes the tilting member to pivot and rotate the lights downward with continued extension of the extendable tower past the preselected extension position. Retraction of the extendable tower back to the preselected extension position, accordingly, results in causing rotation of the lights upwardly.

대표청구항 ▼

A light tilting apparatus usable with an extendable light. In one embodiment, a mobile lighting system includes a tiltable light assembly mounted to an extendable tower on a trailer. The tiltable light assembly includes one or more lights fixedly mounted to a tilting member pivotably mounted to the

A light tilting apparatus usable with an extendable light. In one embodiment, a mobile lighting system includes a tiltable light assembly mounted to an extendable tower on a trailer. The tiltable light assembly includes one or more lights fixedly mounted to a tilting member pivotably mounted to the extendable tower. A linkage operably connected to the tilting member at one end has a catch on a distal end. A linkage regulator attached to the extendable tower has a guide portion for the linkage to pass through as the extendable tower is extended and retracted. The linkage regulator is configured to engage the catch on the distal end of the linkage when the extendable tower reaches a preselected extension position restricting further motion of the linkage in the direction of tower extension. The linkage causes the tilting member to pivot and rotate the lights downward with continued extension of the extendable tower past the preselected extension position. Retraction of the extendable tower back to the preselected extension position, accordingly, results in causing rotation of the lights upwardly. .1. 3. The image forming method according to claim 1, further comprising: performing vibration absorption while joining the plurality of said inks including said image forming ink in a confluent flow to form said ink liquid. 4. The image forming method according to claim 1, wherein at least one ink in the plurality of said inks is an image non-forming ink which substantially does not form an image after drying out and the mixture proportion of the plurality of said inks is controlled so that said ink liquid always contains said image non-forming ink. 5. The image forming method according to claim 1, wherein flow rates of the plurality of said inks are controlled in accordance with different pixels substantially orthogonal to a moving direction of said image receiving medium. 6. The image forming method according to claim 1, wherein the plurality of said ink ejection ports are provided with different pixels and each ink ejection port ejects said ink liquid in which the plurality of said inks have flow rates controlled in accordance with different pixels. 7. The image forming method according to claim 1, wherein said ink liquid ejected from said ink ejection port is transported to said image receiving medium as a continuous fluid flow to form the image. 8. The image forming method according to claim 1, wherein the plurality of said ink ejection ports are provided with different pixels and each ink ejection port ejects said ink liquid in which the plurality of said inks have flow rates controlled in accordance with different pixels; and wherein said ink liquids ejected from the plurality of said ink ejection ports are transported to said image receiving medium as a continuous fluid flow through a slot connecting said respective ink ejection ports to form the image. 9. The image forming method according to claim 1, wherein said ink flow rate of the respective inks is controlled by changing a cross sectional area of the respective ink channels. 10. The image forming method according to claim 9, wherein said cross sectional area of the respective ink channel is controlled by a piezoelectric device. 11. The image forming method according to claim 10, wherein said piezoelectric device is driven by a mechanical resonance frequency inherent thereto and said ink flow rate of the respective inks is controlled by changing a pulse number of said frequency. 12. The image forming method according to claim 1, wherein an ink channels for supplying one type of said inks to said ink ejection port has a section area larger than another section area of another ink channel for supplying another type of said inks at a confluence where said ink channels join. 13. The image forming method according to claim 12, wherein the one type of said inks is said image non-forming ink for substantially forming no image after drying out, and the another type of said ink is said image forming ink. 14. The image forming method according to claim 1, wherein said predetermined minimum amount is an amount required for to refreshing a volume of the image forming ink mixed with any other inks by natural diffusion. 15. An image forming apparatus for forming an image on an image receiving medium with an ink liquid, said ink liquid including a plurality of inks, at least one of the plurality of the inks being an image forming ink for substantially forming an image after drying out, a mixture proportion of the plurality of said inks being changed with respect to a pixel based on an image signal; said image forming apparatus comprising: an ink ejection port for ejecting said ink liquid to the image receiving medium which is moved relatively to the ink ejection port; a plurality of ink channels for supplying a plurality of respective inks to said ink ejection port to produce said ink liquid; ink flow controlling means for independently controlling an ink flow rate of the respective inks in the respective ink channels so that a flow rate of said image forming ink is n ot less than a predetermined minimum flow rate; a processor for determining the mixture proportion of the plurality of said inks based on the image signal and for calculating an ink flow rate of the respective inks, wherein a density of the pixel is corrected in accordance with said minimum flow rate so that said mixture proportion of the plurality of said inks is corrected, and wherein the respective ink flow rate of the respective inks is calculated based on the corrected mixture proportion; and a driver for driving said ink flow controlling means based on a result of a calculation by said processor. 16. The image forming apparatus according to claim 15, wherein said ink flow controlling means is formed by a flow control valve operatively connecting the respective ink channels and changing an area of the respective ink channels. 17. The image forming apparatus according to claim 16, wherein said flow control valve is a diaphragm valve driven by a piezoelectric device. 18. The image forming apparatus according to claim 16, wherein said flow control valve is a diaphragm valve driven by a thermal-pressure effect. 19. The image forming apparatus according to claim 16, wherein said flow control valve is a diaphragm valve driven by an electrostatic attraction force or an electrostatic repulsive force. 20. The image forming apparatus according to claim 15, a plurality of said ink ejection ports being aligned in accordance with respective pixels substantially orthogonal to a moving direction of said image receiving medium and each ink ejection port is independently opposed to said image receiving medium. 21. The image forming apparatus according to claim 15, wherein said ink liquid is ejected from said ink ejection port to be transported to said image receiving medium as a continuous fluid flow. 22. The image forming apparatus according to claim 21, wherein said image receiving medium is an intermediate image receiving medium for receiving said continuous fluid ejected from said ink ejection port and transferring said continuous fluid to a final image receiving medium. 23. The image forming apparatus according to claim 15, wherein a plurality of said ink ejection ports are provided in accordance with the respective pixels and formed in a slot opposed to said image receiving medium, said ink liquid ejected from each ink ejection ports being integrated and zonally transported to said image receiving medium from said slot as a continuous fluid flow. 24. The image forming apparatus according to claim 23, wherein said image receiving medium is an intermediate image receiving medium for receiving said continuous fluid ejected from said slot and transferring said continuous fluid to a final image receiving medium. 25. The image forming apparatus according to claim 15, wherein an ink channel for supplying one type of said inks to said ink ejection port has a section area larger than another section area of another ink channel for supplying another type of said ink at a confluence where said ink channels join. 26. The image forming apparatus according to claim 25, wherein the one type of said inks is the image non-forming ink for substantially forming no image after drying out, and the another type of said inks is said image forming ink. 27. A recording head for use in the image forming apparatus according to claim 15, wherein a plurality of said ink ejection ports are provided to be arranged on a straight line substantially orthogonal to a relative displacement direction of an image receiving medium. 28. A recording head for use in the image forming apparatus according to claim 15, wherein a plurality of said ink ejection ports are provided so that adjacent ink ejection ports are distributed on a plurality of parallel straight lines substantially orthogonal to a relative displacement direction of an image receiving medium. 29. The image forming apparatus according to claim 15, wherein said predetermined minimum flow rate for said image forming ink is not less than a flow rate for refreshing a volume of the image forming ink mixed with any other inks by natural diffusion. 30. The image forming apparatus according to claim 15, further comprising a mechanism for performing vibration absorption at a portion where the plurality of said inks becomes confluent. 31. An image forming method for forming an image on an image receiving medium with an ink liquid, said ink liquid including a plurality of inks, at least one of the plurality of the inks being an image forming ink for substantially forming an image after drying out, a mixture proportion of the plurality of said inks being changed with respect to a pixel based on an image signal; said method comprising: supplying the plurality of the inks to an ink ejection port through a plurality of respective ink channels; mixing the plurality of said inks at an upstream portion of the ink ejection port to produce said ink liquid; controlling an ink flow rate of the respective inks in the respective ink channels in such a manner that a volume flow rate per unit time of said image forming ink does not become zero; transporting said ink liquid from the ink ejection port to the image receiving medium, said image receiving medium being moved relatively to the ink ejection port, to form the image thereon; and performing vibration absorption while joining the plurality of said inks including said image forming ink in a confluent flow to form said fluid. 32. An image forming method for forming an image on an image receiving medium with an ink liquid, said ink liquid including a plurality of inks, at least one of the plurality of the inks being an image forming ink for substantially forming an image after drying out, a mixture proportion of the plurality of said inks being changed with respect to a pixel based on an image signal; said method comprising: supplying the plurality of the inks to an ink ejection port through a plurality of respective ink channels; mixing the plurality of said inks at an upstream portion of the ink ejection port to produce said ink liquid; controlling an ink flow rate of the respective inks in the respective ink channels in such a manner that a volume flow rate per unit time of said image forming ink does not become zero; and transporting said ink liquid from the ink ejection port to the image receiving medium, said image receiving medium being moved relatively to the ink ejection port, to form the image thereon; wherein said ink flow rate of the respective inks is controlled by changing a cross sectional area of the respective ink channels, and wherein said cross sectional area of the respective ink channel is controlled by a piezoelectric device which is driven by a mechanical resonance frequency inherent thereto and said ink flow rate of the respective inks is controlled by changing a pulse number of said frequency. 33. The image forming method according to claim 1, wherein said ink liquid ejected from said ink ejection ports is transported to said image receiving medium by an ink jet mode. 34. The image forming method according to claim 33, wherein said ink jet mode is any of a piezo ink jet mode, a thermal ink jet mode, a continuous ink jet mode, an electrostatic attraction ink jet mode, and an ultrasonic ink jet mode. 35. The image forming method according to claim 1, wherein said ink flow rate of the respective inks is controlled by changing a discharge quantity of an ink feed pump. 36. The image forming method according to claim 35, wherein said ink feed pump includes at least one check valve provided to said respective ink channels, a cavity provided in the vicinity of said check valve and a movable member for changing a capacity of said cavity, and said ink is ejected by changing a capacity of said cavity by using said movable member. 37. The image forming method according to claim 36, wherein said check valve has a geometric form that a resistance relative to a flow directio n of said ink toward said ink ejection ports is smaller than a resistance relative to a reverse direction with respect to said flow direction. 38. The image forming method according to claim 35, said ink feed pump being driven by a pulse motor. 39. The image forming apparatus according to claim 15, wherein said ink flow controlling means is formed by an ink feed pump which is operatively connected to the respective ink channels and driven by a pulse motor. 40. The image forming apparatus according to claim 15, wherein said ink flow controlling means is formed by an ink feed pump which is operatively connected to the respective ink channels and uses a piezoelectric device and a check valve. 41. The image forming apparatus according to claim 15, wherein said ink flow controlling means includes a check valve provided to the respective ink channels, a cavity provided in the vicinity of said check valve and a movable member for changing a capacity of said cavity, and said ink flow controlling means ejects an ink by changing a capacity of said cavity by using said movable member. 42. The image forming apparatus according to claim 41, wherein said check valve has a geometric form that a resistance relative to an ink flow direction toward said ink ejection port is smaller than a resistance relative to a reverse direction with respect to said ink flow direction. 43. The image forming apparatus according to claim 41, wherein said movable member is a diaphragm driven by a piezoelectric device. 44. The image forming apparatus according to claim 41, wherein said movable member is a diaphragm driven by a heat-pressure effect. 45. The image forming apparatus according to claim 41, wherein said movable member is a diaphragm driven by an electrostatic attraction force or an electrostatic repulsive force. 46. The image forming apparatus according to claim 41, wherein said movable member is a diaphragm driven by a magnetic distortion effect. 47. The image forming apparatus according to claim 41, wherein said movable member is a diaphragm driven by an interfacial tension effect of a fluid different from the plurality of said inks used for forming an image. 48. The image forming apparatus according to claim 41, wherein said movable member is a diaphragm driven by a bubble generated by electrolyzing a fluid different from the plurality of said inks used for forming an image. 49. The image forming apparatus according to claim 15, further comprising ink transporting means for leading said ink liquid ejected from said ink ejection port to said image receiving medium by an ink jet mode.