We will report here the successful development of a prototype decolorable printieg ink that can be easily and completely rendered invisible by heat treatment or solvents. The new ink promises efficient, cost-effective paper recycling and allow reuse of huge volumes of paper. Toshiba is working toward these goals through refinement of the technology.
Development of novel ferroelectric image-recording devices with a memory effect was outlined. In an early stage of the development, recording mechanism was based on a difference in charge acceptance between the poled and unpoled areas. But a mechanistic study on the recording process led to the construction of a new system based on pyroelectricity. Further investigation on the effect of electric field and heating on dipole orientation revealed the feasibility of "pyroelectric imaging", which utilized area-selective polarization reversal and made possible the permanently stable, and yet erasable electrostatic images.
We have investigated the properties of an electron field emission from carbon nanotube panel consisted with a poly(methylphenylsilane) and the carbon nanotubes. The prepared emission source, although is not optimized in the process, shows the electron field emission with the turn on voltage of 160 V and the saturated current of 10^<-3> A/cm^2. The emission source shows a high stability against poor vacuum condition such as 0.1 Torr. We have also demonstrated an optical emission from a light emitting device using this electron emission source.
Expansion of document exchange through the network in homes and general offices resulted in increasing demands for accurate transmission of sender's intended color to a receiver. One means to satisfy these demands is to reduce the color difference among color printers of various manufacturers. This paper is to report the activity of Color Management Committee in Japan Business Machines Makers Association. The purpose of this activity is to develop color characterization method for color printers such as RGB based digital image files, sampling conditions, color measurement conditions including backing material etc. The outcome of this activity will be proposed as a JBMA standard and revision of IEC61610.
We achieved the 1.5 times higher print speed and invisible dot for the naked eye at PM770C. They were realized by both minimized ink droplet size(minimum6pl) and MSDT(Multi Sized Dot Technology). We could achieve them by 3 important technology like this, 1. New design ink jet head fit for smaller ink droplet volume. 2. Active Meniscus Control at firing process 3. Quivering Meniscus Control before printing. I would like to introduce their outlines.