48results about How to "Stable writing" patented technology

A liquid crystal lens element having a lens function capable of stably correcting spherical aberration containing a power component corresponding to focus change of incident light according to the magnitude of applied voltage.The liquid crystal lens element comprises a pair of transparent substrates 11 and 12, one (12) of the transparent electrodes is provided with a transparent electrode 15 and a Fresnel lens surface 17, and the other one (11) of the pair of transparent electrodes is provided with a phase correction surface 18 and a transparent electrode 16. Thus, by disposing a Fresnel lens surface 17 and a liquid crystal layer 13 between a pair of transparent electrodes 15 and 16, it becomes possible to change substantial refractive index distribution of the liquid crystal layer 13 according to the magnitude of applied voltage, and to add a positive or negative power to a wavefront transmitted through the liquid crystal layer 13, the Fresnel lens surface 17 and the phase correction surface 18.

A writing method for an optical disc to optimize a writing speed, wherein a spiral track on the optical disc is divided into a plurality of zones, and different CLV writing speeds are used for performing a ZCLV writing to the zones respectively. The writing method comprises steps of: setting a plurality of writing modes; storing a plurality of zone parameter sets for the writing modes respectively in a memory, wherein each of the zone parameter sets comprises dividing times for dividing the zones, and the different CLV writing speeds for the zone respectively; determining a disc type of the optical disc by a disc type determining device before the ZCLV writing is performed; selecting one of the zone parameter sets that is suitable to the disc type of the optical disc; and performing the ZCLV writing with the writing mode corresponding to the selected zone parameter set.

The invention is to obtain a glass substrate for information recording disk with satisfactory circular ring strength through minimizing of polished depth at chemical polishing without performing any chemical strengthening treatment. The surface roughness of the edge face of inner circumferential portion of a doughnut-shaped glass substrate for magnetic disk is regulated by mechanical polishing to 9 nm or less in terms of Rmax. Subsequently, the edge face of inner circumferential portion is subjected to chemical polishing so that the surface layer thereof as much as 2 [mu]m or more is polished off. By such unprecedented mirror finish of the surface roughness of the edge face of inner circumferential portion through mechanical polishing, a satisfactory circular ring strength can be attained even when the polished depth at chemical polishing is reduced to less than in the prior art. The polished depth of less than 5 [mu]m is satisfactory.

The present invention provides a instrument pen cap for writing which improves buffering effect and prevents generating pen cocoon as well as makes the writing tool insert easily and increases the cling degree with the writing tool, thus implement writing stably. In the pen cap 1 which suits on the axis of the writing tool P and possesses cylinder-shape spring pen cap main body 2,many small independent warts 3 intersperses on the internal circle surface 2a of the given spring pen cap main body2.

A mobile English teaching blackboard with a dust-absorbing function, comprising a board body, two supporting boards are fixedly connected to the lower side of the board body, two rollers are fixedly connected to the lower side of the supporting boards, and the two supporting boards A base plate is fixedly connected between the bottoms, a support column is fixedly connected to the center of the base plate, and the top of the support column is fixedly connected to the lower side of the plate body. A vertical through hole is opened in the support column, and the cross section of the vertical through hole is rectangular. A rack is arranged in the vertical through hole, and the teeth on the rack are arranged to the right. The bottom end of the rack is fixedly connected with a mounting plate, and stabilizing blocks are fixedly connected around the lower side of the mounting plate; the right side of the support column The wall is provided with a vertical moving slot, the right side of the rack is meshed with a gear, the middle of the gear is fixedly connected with a rotating shaft, and the front and rear sides of the support plate are fixedly connected with baffles. The invention has the advantages of reasonable structural design, convenient use and the mutual conversion between blackboard writing and moving states, and has certain popularization and application value.

The invention relates to a card writing method of intelligent card personalized equipment and a card writing mechanism for implementing the method. Fixed writing head groups are arranged on both the upper and lower sides of a card passing channel; a liftable cache card slot group arranged on one side of each fixed writing head group; through the driving of a listing driving mechanism, the cache card slot groups lift between the fixed writing heads on the upper and lower sides in a reciprocation manner, so as to cache each group of blank intelligent cards on the card passing channel or each group of intelligent cards, the card writing of which is completed by the fixed writing heads on the upper and lower sides; card push devices are arranged on both the upper and lower sides of the card passing channel; and through the driving of a translation driving mechanism, the card push devices move between the fixed writing head groups and the cache card slot groups in a reciprocation manner, so as to simultaneously push a group of blank intelligent cards cached in the cache card slot groups into the fixed writing head groups, or simultaneously push a group of intelligent cards, the card writing of which is completed in the fixed writing head groups into the cache card slot groups. According to the method, when a fixed writing head group enters or exits a card, the other group can carry out card writing normally, so that the working efficiency of equipment is improved.

The present application relates to a liquid crystal lens element and an optical head device, in particular order, to a liquid crystal lens capable of switching the focal length among a plurality of different focal lengths according to switching of applied voltage among a plurality of applied voltages, and an optical head device employing the liquid crystal lens, for writing and / or reading an information to / from an optical recording medium.