Canon BJC-55 Service Bulletin

Also see for BJC-55 Series: Service manual User manual Start here User manual Specification

Contents

COMP. SYSTEMS - 6 - PRNT-896Light interceptionWavelength: 0.85 to 0.90 μmIntensity: 4μ W/cm2 to 500m W/cm210μ W/cm2 to 500m W/cm2(when the communication speed is more than 0.576 MHz.)Light angle: Approx. ±15o (along optical axis)3) Transfer speed 9600/19200/38400/57600/115.2k/576k/1.152M/4M bps4) Communication Half duplex, start/stop system (bidirectional):method when the transfer speed is less than 115.2kbpsHalf duplex, frame synchronization system (bidirectional):when the transfer speed is more than 0.576Mbps5) Communication 0 to 1m: when the transfer speed is less than 115.2kbpsdistance 0 to 0.8m: when the transfer speed is more than 0.576Mbps6) Maximum data 2048 byte/packetreception7) Modulation method 3/16 RZI (Return to Zero Invert):when the transfer speed is less than 115.2kbps1/4 RZI (Return to Zero Invert):when the transfer speed is 0.576Mbps and 1.152Mbps4 PPM (Pulse Position Modulation):when the transfer speed is 4Mbps4-4-2. USB Interface1) Device structure Self-powered device2) Data transfer Half duplex serial interfacemethod Universal Serial Bus Specification Revision 1.0 compatibleUniversal Serial Bus Device Class Definition for PrintingDevice Version 1.0 compatibleSignal rate: 12Mbps (full speed)Transfer type: Control transfer/Bulk transfer3) Input/output circuit No. Signal name1 Vcc2 -Data Data signal line3 +Data Data signal line4 GNDVcc: "H" level input voltage: +2.0V to +5.5V"L" level input voltage: +0.0V to +0.8V-Data, +Data: Differential input sensitivity: Min. 0.2V"H" level input voltage: +2.8V to +3.6V"L" level input voltage: +0.0V to +0.3V4) Interface cable Material: AWG No.28 or largerFull speed device cable (twisted pair shielded cable)Less than 5 m5) Interface connector Printer-side: USB (Series B) receptacleCable-side: USB (Series B) plugSeries B1243