Image recording apparatus operable with a vertical scan synchronization signal
AssigneeCanon Kabushiki Kaisha
InventorsMasanori Ishizu, Toshihiko Inuyama, Takeji Gima, Hiroshi Hashimoto, Hiromichi Yamanaka, Soya Endo, Toshiyuki Itoh, Hitoshi Machino, Tomohiro Nakamori
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Abstract
An image recording apparatus operated in synchronism with a vertical synchronization signal from an external device comprises a unit for sending out to the external device a signal indicating a status to accept the vertical synchronization signal, and switching device for switching between a plurality of operation modes related to an elapsed time from the send-out of the signal by the signal sending unit.
Claims25
An image recording apparatus operated in synchronism with a vertical synchronization signal from an external device, said apparatus comprising:
- means for sending out to said external device a signal indicating a status to accept the vertical synchronization signal;
- and
- switching means for switching between a plurality of operation modes related to an elapsed time from the send-out of the signal by said signal sending means, wherein when the vertical synchronization signal is not supplied and the elapsed time exceeds a predetermined time, the plurality of operation modes includes a mode in which a print enable status is released and a mode in which the print enable status is not released.
An image recording apparatus operated in synchronism with a vertical synchronization signal from an external device, said apparatus comprising:
- means for sending out to said external device a signal indicating a status to accept the vertical synchronization signal;
- selection means for selecting one of a plurality of operation modes related to an elapsed time from the send-out of the signal by said signal sending means;
- and
- input means for receiving a command signal for commanding the selection of one of the plurality of operation modes, wherein when the vertical synchronization signal is not supplied and the elapsed time exceeds a predetermined time, the plurality of operation modes includes a mode in which a print enable status is released, and a mode in which the print enable status is not released.
An image recording apparatus operated in synchronism with a vertical synchronization signal from an external device, said apparatus comprising:
- means for sending out to said external device a signal indicating a status to accept the vertical synchronization signal;
- means for releasing a print enable status when the vertical synchronization signal is not supplied and a predetermined time has elapsed after said sending means sends the signal;
- and
- switching means for switching and setting the predetermined time on the basis of a command signal from said external device.
Dependencies are inferred from the claim text.