Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1993-11-16
1995-11-21
Hartary, Joseph W.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
437247, 437946, 437982, B41J 205
Patent
active
054692008
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a polycrystalline silicon-based substrate for use in a liquid jet recording head of conducting recording by discharging a liquid recording medium through discharging outlets utilizing thermal energy, and a process for producing said substrate. The present invention also relates to a liquid jet recording head in which said substrate is used and a liquid jet recording apparatus in which said substrate is used.
BACKGROUND OF THE INVENTION
There is known a liquid jet recording method for conducting recording by discharging a liquid recording medium such as ink through discharging outlets utilizing thermal energy to sputter said liquid recording medium whereby said liquid recording medium is deposited on a recording member such as papers, plastic sheets, fabrics, or the like. The liquid jet recording method is of a so-called non-impact recording method, and it has various advantages in that the noise at the recording can be reduced to a negligible order, there is not a particular restriction for the recording member used, and color recording can be relatively easily attained. And as for the apparatus, that is, the liquid jet recording apparatus, for practicing the above liquid jet recording method, there are advantages in that the structure thereof can be relatively simplified, liquid discharging nozzles can be arranged at a high density, and a high speed recording can be relatively easily attained. In view of this, the liquid jet recording method has recently received he public attention, and various studies have been made thereon. Incidentally, a number of liquid jet recording apparatus have been put on the market.
Shown in FIG. 5(A) is a schematic cross-eyed view illustrating the principal part of an example of a recording head used in such liquid jet recording apparatus. FIG. 5(B) is a schematic cross-sectional view taken along the liquid pathway and at the face perpendicular to the substrate of the recording head shown in FIG. 5(A).
As apparent from FIG. 5(A) and FIG. 5(B), the recording head is provided with a substrate 8 for liquid jet recording head comprising a plurality of discharging outlets 7 each serving to discharge a liquid recording medium such as ink, liquid pathways 6 each corresponding one of the discharging outlets 7, a liquid chamber 10 serving to supply a liquid recording medium to each of the liquid pathways, heat generating resistors 2a each serving to supply thermal energy to the liquid recording medium, and wirings 3a, 3b for applying an electric signal to the heat generating resistors 2a.
The substrate for liquid jet recording head 8 is of the configuration shown in FIG. 5(B) wherein a heat generating resistor layer 2 is disposed on a base member 1, a wiring layer 3 constituted by a material having a good electroconductivity is laminated on said heat generating resistor layer 2, and a portion 2a of the heat generation resistor layer where the wiring layer 3 is not disposed functions as a heat generating resistor.
In this configuration, when an electric signal is applied to the heat generating resistor 2a through the wirings 3a, 3b the heat generating resistor 2a is energized. The substrate for liquid jet recording head 8 may be provided with a protective layer 4 for the purpose of protecting the wirings 3a, 3b and the heat generating resistor 2a. The protective layer 4 serves to prevent occurrence of electric corrosion or/and electric breakdown at the heat generating resistor 2a and the wirings 3a, 3b.
As the base member 1 of the substrate for liquid jet recording head 8, there can be mentioned plate-like members of silicon, glass, ceramics, or the like. However, in general, a single crystal silicon plate is used as the base member. The reason for this is due to the following situation. That is, in the case where a glass plate is used as the base member 1, there are disadvantages in that the glass plate is poor in thermal conductivity, and when the energization frequency (the drive pulse in other words) for the heat generatin
REFERENCES:
patent: 3887733 (1975-06-01), Tolliver
patent: 4535343 (1985-08-01), Wright
patent: 4676868 (1987-06-01), Riley
patent: 5134018 (1992-07-01), Tokunaga
Canon Kabushiki Kaisha
Hartary Joseph W.
LandOfFree
Polycrystalline silicon substrate having a thermally-treated sur does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polycrystalline silicon substrate having a thermally-treated sur, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polycrystalline silicon substrate having a thermally-treated sur will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1141158