Abstract: An ink composition according to the present invention contains an adhesiveness providing component including an acrylate monomer for providing an adhesiveness with respect to a print medium, and a rigidity providing component including at least one substance selected from the group consisting of a multi-functional acrylate monomer and a multi-functional acrylate oligomer.

Abstract: An ink composition according to the present invention contains an adhesiveness providing component including an acrylate monomer for providing an adhesiveness with respect to a print medium, and a rigidity providing component including at least one substance selected from the group consisting of a multi-functional acrylate monomer and a multi-functional acrylate oligomer.

Abstract: The projection type display device includes a light source tube having electron beam generation means and a light-emitting portion consisting of a fluorescent layer emitting light by means of electron beam excitation, a light valve for forming an optical image corresponding to a picture signal, and an optical system for projecting upon a screen the optical image of the light valve by means of the light irradiated from the light source tube. The convex lens is disposed between the light valve and the light-emitting portion, such that the diffusing light emitted from the light emitting portion is condensed toward the light valve. As a result, the diffusing light from the light-emitting portion having a smaller area than the area of the light valve is supplied to the light valve in a substantially parallel beam. Further, the reflection layer for reflecting and condensing the diffusing light emitted from the light-emitting portion toward the light valve may be provided.

Abstract: In a display unit comprising a plate-shaped display panel with X-Y matrix electrodes consisting of two groups of electrodes, X-axis electrodes and Y-axis electrodes, display signals are applied to the X-Y matrix electrodes, a.c. current is applied to at least one group of electrodes one after another, and the phase of the a.c. current is compared with that of the output of an input pen having means for detecting the magnetic flux induced by the a.c. current, so that the position of the input pen on the display panel is detected from the result of the comparison.

Abstract: An electrographic imaging system for driving a single surface control electrostatic recording head has recording stylus electrodes arranged in groups with respective stylus electrodes of each group connected in parallel and control electrodes arranged adjacent respective groups of stylus electrodes so as to form electrostatic latent images on a dielectric layer of a record medium contacting the recording head. In the electrographic imaging system a first control pulse voltage is applied to selected control electrode adjacent a selected group of stylus electrodes; and then a second control pulse voltage having a different polarity is applied to the control electrode and simultaneously, a recording pulse voltage having the same polarity as the polarity of the first control pulse voltage is applied to the selected respective group of recording stylus electrodes.