Terminal apparatus

Details Terminal apparatus Terminal apparatus

1996-07-09

1998-12-29

Lee, Thomas D.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358437, 358442, B41B 1500, H04N 100

Patent

active

058548858

ABSTRACT:
In a circuit formed with a resistor 32, connection terminals 28 and 23, a resistor 25, and connection terminals 24 and 29 all of which are shown in FIG. 3, when a one-chip microcomputer 21 shown in FIG. 1 inputs a high-level SCAN signal, a high- or low-level SENSE signal is generated according to the mounting state of an ink cartridge 33. When the ink cartridge 33 is mounted, a low-level SENSE signal is generated in response to a high-level SCAN signal. When the ink cartridge 33 is not mounted, a high-level SENSE signal is generated in response to a high-level SCAN signal. The one-chip microcomputer 21 monitors the mounting state of the ink cartridge 33 by detecting the level of a SENSE signal in order to prevent unnecessary initialization operations for the head of the ink cartridge so as not to reduce the number of sheets available for recording and not to increase running costs.

REFERENCES:
patent: 4025757 (1977-05-01), McKay et al.
patent: 5016183 (1991-05-01), Korsh
patent: 5610635 (1997-03-01), Murray

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