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...01 ppm or less on the average, 0.02 ppm or less at 20°C room temperature), enabling speedy copying work . 6. multifeeder type). 7. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-1 CHAPTER 1 GENERAL DESCRIPTION I. Personal Copier with the use of a roller charging...Paper Sizes • The paper may be between 70% and 141% in -One Cartridge for Simple Maintenance • The photosensitive drum, toner case, charging roller, developing assembly, and cleaning assembly are constructed as he/she performs simple replacement/cleaning work immediately after power...
...01 ppm or less on the average, 0.02 ppm or less at 20°C room temperature), enabling speedy copying work . 6. multifeeder type). 7. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-1 CHAPTER 1 GENERAL DESCRIPTION I. Personal Copier with the use of a roller charging...Paper Sizes • The paper may be between 70% and 141% in -One Cartridge for Simple Maintenance • The photosensitive drum, toner case, charging roller, developing assembly, and cleaning assembly are constructed as he/she performs simple replacement/cleaning work immediately after power...
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... Desk top Descriptions Fixed Halogen lamp (80 V/110 W for 120V-model; 150 V/160 W for 220/240 V-model) Fixed focal point lens OPC drum (24-mm dia.) Table 1-201 Descriptions Indirect static reproduction Roller (direct charging) Slit (moving light source) Auto or manual Dry (toner projection) Cassette...(single-feeder type) Multifeeder (multifeeder type) Curvature separation + static eliminator Flat heater Blade Center reference (copyboard) Table 1-202 1-2 COPYRIGHT © 1999 CANON INC. SPECIFICATIONS A. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
... Desk top Descriptions Fixed Halogen lamp (80 V/110 W for 120V-model; 150 V/160 W for 220/240 V-model) Fixed focal point lens OPC drum (24-mm dia.) Table 1-201 Descriptions Indirect static reproduction Roller (direct charging) Slit (moving light source) Auto or manual Dry (toner projection) Cassette...(single-feeder type) Multifeeder (multifeeder type) Curvature separation + static eliminator Flat heater Blade Center reference (copyboard) Table 1-202 1-2 COPYRIGHT © 1999 CANON INC. SPECIFICATIONS A. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
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CHAPTER 1 GENERAL DESCRIPTION VI. IMAGE FORMATION A. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Outline The construction of the machine is as follows: Scanning lamp Copyboard glass Fixed focal point lens Side blanking lamp (front, rear) Primary charging roller Developing blade Fixing assembly Cleaning blade Developing cylinder Photosensitive drum Figure 1-601 Transfer charging roller Static eliminator 1-20 COPYRIGHT © 1999 CANON INC.
CHAPTER 1 GENERAL DESCRIPTION VI. IMAGE FORMATION A. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Outline The construction of the machine is as follows: Scanning lamp Copyboard glass Fixed focal point lens Side blanking lamp (front, rear) Primary charging roller Developing blade Fixing assembly Cleaning blade Developing cylinder Photosensitive drum Figure 1-601 Transfer charging roller Static eliminator 1-20 COPYRIGHT © 1999 CANON INC.
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Image exposure 7. positive DC) Step 6 Fixing Step 7 Drum cleaning Static latent image formation block 1. Development Delivery 6. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-21 Transfer Manual feed 5. Primary charging 2. Fixing 4. Separation Registration : ...AC + negative DC) Step 2 Image exposure Step 3 Development (AC + negative DC) Step 4 Transfer (negative DC) Step 5 Separation (curvature separation + static eliminator; Drum cleaning 3. CHAPTER 1 GENERAL DESCRIPTION The machine's image formation process consists of the photosensitive...
Image exposure 7. positive DC) Step 6 Fixing Step 7 Drum cleaning Static latent image formation block 1. Development Delivery 6. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-21 Transfer Manual feed 5. Primary charging 2. Fixing 4. Separation Registration : ...AC + negative DC) Step 2 Image exposure Step 3 Development (AC + negative DC) Step 4 Transfer (negative DC) Step 5 Separation (curvature separation + static eliminator; Drum cleaning 3. CHAPTER 1 GENERAL DESCRIPTION The machine's image formation process consists of the photosensitive...
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... illuminating block Optical block Primary charging roller Image formation system Drum cleaning block Photosensitive drum Developing assembly Copy tray Feeding Fixing assembly/ delivery assembly Transfer/ separation Cassette Figure 2-101 Pickup control block Manual feed block Pickup/ feeding system COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU...
... illuminating block Optical block Primary charging roller Image formation system Drum cleaning block Photosensitive drum Developing assembly Copy tray Feeding Fixing assembly/ delivery assembly Transfer/ separation Cassette Figure 2-101 Pickup control block Manual feed block Pickup/ feeding system COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU...
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photosensitive drum, thereby ensuring ward. Moves the scanner to the home position in reverse. Illuminates the original by the scanning lamp, and the reflected optical image is moving in reverse. • The reverse speed is pressed. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN... (IMPRIME AU JAPON) While the scanner moves forward about 3.3 as fast as post-processing. While the scanner is projected to the photosensitive drum through mirrors and lenses. CHAPTER 2 BASIC ...
photosensitive drum, thereby ensuring ward. Moves the scanner to the home position in reverse. Illuminates the original by the scanning lamp, and the reflected optical image is moving in reverse. • The reverse speed is pressed. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN... (IMPRIME AU JAPON) While the scanner moves forward about 3.3 as fast as post-processing. While the scanner is projected to the photosensitive drum through mirrors and lenses. CHAPTER 2 BASIC ...
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...of the main motor control circuit, and Figure 2-104 is a block diagram of the circuit. Executes constant speed rotation control. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-5 Error detection Issues 'E010'. Item Power supply Description...Reference signal Main motor drive PCB Figure 2-104 COPYRIGHT © 1999 CANON INC. Controlling the Main Motor (M1) 1. Drive signal Signal (MMD) from the composite power supply. Moving/drive parts Photosensitive drum, primary charging roller, developing assembly, transfer charging roller, pickup roller,...
...of the main motor control circuit, and Figure 2-104 is a block diagram of the circuit. Executes constant speed rotation control. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-5 Error detection Issues 'E010'. Item Power supply Description...Reference signal Main motor drive PCB Figure 2-104 COPYRIGHT © 1999 CANON INC. Controlling the Main Motor (M1) 1. Drive signal Signal (MMD) from the composite power supply. Moving/drive parts Photosensitive drum, primary charging roller, developing assembly, transfer charging roller, pickup roller,...
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.../lens drive motor (M2) Scanner thermistor (TH2) By a fuse (blows in response to overheating of the exposure system. Figure 3-101 CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-1 OPERATIONS A. blows at 128°C) Table 3-101 Copyboard glass... Enlarge Reduce Moves for enlargement/ reduction Fixed focal point lens Photosensitive drum No. 4/5 mirror unit COPYRIGHT © 1999 CANON INC. Item Lamp Scanning Scanner position detection Ratio variation Lens drive control Scanner drive control Protective function Halogen ...
.../lens drive motor (M2) Scanner thermistor (TH2) By a fuse (blows in response to overheating of the exposure system. Figure 3-101 CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-1 OPERATIONS A. blows at 128°C) Table 3-101 Copyboard glass... Enlarge Reduce Moves for enlargement/ reduction Fixed focal point lens Photosensitive drum No. 4/5 mirror unit COPYRIGHT © 1999 CANON INC. Item Lamp Scanning Scanner position detection Ratio variation Lens drive control Scanner drive control Protective function Halogen ...
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...length: L1 < L2, L1 < L3 Figure 3-102 3-2 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Varying the Reproduction Ratio The reproduction ratio in the drum axial direction (main scanning direction) is varied by the lens drive system, and ...that in the drum peripheral direction (sub scanning direction) is made higher ...
...length: L1 < L2, L1 < L3 Figure 3-102 3-2 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Varying the Reproduction Ratio The reproduction ratio in the drum axial direction (main scanning direction) is varied by the lens drive system, and ...that in the drum peripheral direction (sub scanning direction) is made higher ...
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CHAPTER 4 IMAGE FORMATION SYSTEM Copyboard glass Scanning lamp AE sensor Side blanking lamp Lens Primary charging roller Developing cylinder Photosensitive drum Drum cartridge Static eliminator Transfer roller Q101 Microprocessor DC controller PCB Lamp regulator block High-voltage circuit block Q900 Microprocessor Composite power supply PCB Figure 4-101 4-2 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 4 IMAGE FORMATION SYSTEM Copyboard glass Scanning lamp AE sensor Side blanking lamp Lens Primary charging roller Developing cylinder Photosensitive drum Drum cartridge Static eliminator Transfer roller Q101 Microprocessor DC controller PCB Lamp regulator block High-voltage circuit block Q900 Microprocessor Composite power supply PCB Figure 4-101 4-2 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
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CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 4 IMAGE FORMATION SYSTEM C. Reference: DC component: AC component: -400 V (non-image area)/-625 V (image area) 2000 Vpp to ensure that the surface potential of the photosensitive drum will be uniform. Controlling the Primary Charging Roller Bias 1. Outline The circuit shown... DC bias Both DC bias and AC bias are applied to the primary charging roller so as to 3000 Vpp (885µA) 4-4 COPYRIGHT © 1999 CANON INC.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 4 IMAGE FORMATION SYSTEM C. Reference: DC component: AC component: -400 V (non-image area)/-625 V (image area) 2000 Vpp to ensure that the surface potential of the photosensitive drum will be uniform. Controlling the Primary Charging Roller Bias 1. Outline The circuit shown... DC bias Both DC bias and AC bias are applied to the primary charging roller so as to 3000 Vpp (885µA) 4-4 COPYRIGHT © 1999 CANON INC.
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Main transformer T101 CHAPTER 4 IMAGE FORMATION SYSTEM Voltage separation circuit T508 High-voltage transformer for primary charging Primary charging roller Photosensitive drum Amplifier DC bias control signal PDC_PWM DC voltage monitor signal PDC_S AC component current monitor signal PAC_S AC bias output signal PAC_OUT -5 PR_DC_ON J103 J203 -4 Microprocessor (Q900) Composite power supply PCB Serial communication Microprocessor (Q101) Figure 4-103 DC controller PCB COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-5
Main transformer T101 CHAPTER 4 IMAGE FORMATION SYSTEM Voltage separation circuit T508 High-voltage transformer for primary charging Primary charging roller Photosensitive drum Amplifier DC bias control signal PDC_PWM DC voltage monitor signal PDC_S AC component current monitor signal PAC_S AC bias output signal PAC_OUT -5 PR_DC_ON J103 J203 -4 Microprocessor (Q900) Composite power supply PCB Serial communication Microprocessor (Q101) Figure 4-103 DC controller PCB COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-5
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...SCRV SCFW SCRV LSTR STBY Main motor (M1) Scanning lamp (LA1) Primary DC bias Primary AC bias -400V -625V Figure 4-104 COPYRIGHT © 1999 CANON INC. copy image area (-400 V). The microprocessor (Q900) on the composite power supply PCB varies the DC bias control signal (PDC_PWM) to a positive potential... AU JAPON) 4-7 Switching the DC Bias Level The machine switches the DC bias level between sheets) so as to prevent charging the photosensitive drum to switch the level of the DC bias is switched by the DC bias ON signal (serial signal) generated by the cleaning bias from the...
...SCRV SCFW SCRV LSTR STBY Main motor (M1) Scanning lamp (LA1) Primary DC bias Primary AC bias -400V -625V Figure 4-104 COPYRIGHT © 1999 CANON INC. copy image area (-400 V). The microprocessor (Q900) on the composite power supply PCB varies the DC bias control signal (PDC_PWM) to a positive potential... AU JAPON) 4-7 Switching the DC Bias Level The machine switches the DC bias level between sheets) so as to prevent charging the photosensitive drum to switch the level of the DC bias is switched by the DC bias ON signal (serial signal) generated by the cleaning bias from the...
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CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Outline The circuit shown in Figure 4-105 is used to control the voltage applied ... signal T_FW_DRV Transfer bias control circuit Transfer DC bias ON signal T_FW_ON High-voltage transformer control signal CLK32K +24V T302 Transfer high-voltage transformer Photosensitive drum Transfer charging roller DC controller PCB Figure 4-105 Composite power supply PCB 4-8 COPYRIGHT © 1999 CANON INC. CHAPTER 4 IMAGE FORMATION SYSTEM D. Controlling the Transfer Roller Bias 1.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Outline The circuit shown in Figure 4-105 is used to control the voltage applied ... signal T_FW_DRV Transfer bias control circuit Transfer DC bias ON signal T_FW_ON High-voltage transformer control signal CLK32K +24V T302 Transfer high-voltage transformer Photosensitive drum Transfer charging roller DC controller PCB Figure 4-105 Composite power supply PCB 4-8 COPYRIGHT © 1999 CANON INC. CHAPTER 4 IMAGE FORMATION SYSTEM D. Controlling the Transfer Roller Bias 1.
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...times, and determines the level of the transfer bias to the transfer roller as follows, thereby returning the toner from the photosensitive drum to apply using the average of the readings. Switching the Polarity of the Transfer Bias (cleaning bias) The machine uses a ... bias (ATVC) Transfer bias 1.2sec (approx.) 0.8sec (approx.) 0.7sec (approx.) 1.6sec(approx.) Figure 4-106 4-10 COPYRIGHT © 1999 CANON INC. Correcting the Transfer Bias Voltage Level (ATVC control) The machine automatically corrects the application voltage level of the transfer bias to the transfer charging...
...times, and determines the level of the transfer bias to the transfer roller as follows, thereby returning the toner from the photosensitive drum to apply using the average of the readings. Switching the Polarity of the Transfer Bias (cleaning bias) The machine uses a ... bias (ATVC) Transfer bias 1.2sec (approx.) 0.8sec (approx.) 0.7sec (approx.) 1.6sec(approx.) Figure 4-106 4-10 COPYRIGHT © 1999 CANON INC. Correcting the Transfer Bias Voltage Level (ATVC control) The machine automatically corrects the application voltage level of the transfer bias to the transfer charging...
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... The circuit shown in Figure 4-107 is applied to the developing cylinder while copies are being made. When the photosensitive drum rotates and yet developing is not under way, about -500 VDC is used to control the voltage applied to the developing... bias are applied to the developing cylinder regardless of the position of the density adjusting lever, thereby preventing adhesion of excess toner on the photosensitive drum. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-11 Controlling the Developing/Separation Static Eliminator Bias 1. Reference : Developing DC bias...
... The circuit shown in Figure 4-107 is applied to the developing cylinder while copies are being made. When the photosensitive drum rotates and yet developing is not under way, about -500 VDC is used to control the voltage applied to the developing... bias are applied to the developing cylinder regardless of the position of the density adjusting lever, thereby preventing adhesion of excess toner on the photosensitive drum. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-11 Controlling the Developing/Separation Static Eliminator Bias 1. Reference : Developing DC bias...
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CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 4 IMAGE FORMATION SYSTEM Main transformer T101 High-voltage transformer for developing/static eliminator Developing DC bias detection circuit +5V T201 Static eliminator bias generation circuit + Photo sensitive drum Developing cylinder Static eliminator DC bias control signal BIAS_PWM DC bias monitor... density setting signal Copy density correction signal AE sensor PCB Control panel Density correction switch (SW101) DC controller PCB Figure 4-107 4-12 COPYRIGHT © 1999 CANON INC.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 4 IMAGE FORMATION SYSTEM Main transformer T101 High-voltage transformer for developing/static eliminator Developing DC bias detection circuit +5V T201 Static eliminator bias generation circuit + Photo sensitive drum Developing cylinder Static eliminator DC bias control signal BIAS_PWM DC bias monitor... density setting signal Copy density correction signal AE sensor PCB Control panel Density correction switch (SW101) DC controller PCB Figure 4-107 4-12 COPYRIGHT © 1999 CANON INC.
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... the changes in the DC bias occurring as by a change in reference to any of three levels, enabling correction of the photosensitive drum. The density correction switch (SW101) affects both manual density adjustment and auto density adjustment (AE). The machine corrects the level of ...the AE sensor during auto density correction and how the density adjusting lever is set during manual density adjustment. 4-14 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 4 IMAGE FORMATION SYSTEM 4. SW101 Figure 4-108 If the machine...
... the changes in the DC bias occurring as by a change in reference to any of three levels, enabling correction of the photosensitive drum. The density correction switch (SW101) affects both manual density adjustment and auto density adjustment (AE). The machine corrects the level of ...the AE sensor during auto density correction and how the density adjusting lever is set during manual density adjustment. 4-14 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 4 IMAGE FORMATION SYSTEM 4. SW101 Figure 4-108 If the machine...
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... DC component of the developing bias according to control the DC component of Originals 1. Measuring the Density of the developing bias. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 4 IMAGE FORMATION SYSTEM F. Scanning lamp +24V ...+ VR103 +5V +24V + VR102 (Q101) Developing cylinder Photosensitive drum Microprocessor Microprocessor (Q900) Developing DCON signal Serial communication DC controller PCB Figure 4-113 Composite power supply PCB 4-16 COPYRIGHT © 1999 CANON INC. The AE mechanism enables production of copies free of fogging ...
... DC component of the developing bias according to control the DC component of Originals 1. Measuring the Density of the developing bias. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 4 IMAGE FORMATION SYSTEM F. Scanning lamp +24V ...+ VR103 +5V +24V + VR102 (Q101) Developing cylinder Photosensitive drum Microprocessor Microprocessor (Q900) Developing DCON signal Serial communication DC controller PCB Figure 4-113 Composite power supply PCB 4-16 COPYRIGHT © 1999 CANON INC. The AE mechanism enables production of copies free of fogging ...
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...front) Figure 4-121 Reflecting plate A B B A , , Photosensitive drum Non-image area in Reduce mode A: Position of the side blanking lamp in Direct and Reduce mode B: Position of excess toner when making reduced copies. 2. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)... 4-21 Operations To blank out the non-image area in Reduce mode Figure 4-122 COPYRIGHT © 1999 CANON INC. CHAPTER 4 IMAGE FORMATION SYSTEM G. Controlling the Side Blanking Mechanism 1. Outline The machine is moved in relation to prevent adhesion ...
...front) Figure 4-121 Reflecting plate A B B A , , Photosensitive drum Non-image area in Reduce mode A: Position of the side blanking lamp in Direct and Reduce mode B: Position of excess toner when making reduced copies. 2. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)... 4-21 Operations To blank out the non-image area in Reduce mode Figure 4-122 COPYRIGHT © 1999 CANON INC. CHAPTER 4 IMAGE FORMATION SYSTEM G. Controlling the Side Blanking Mechanism 1. Outline The machine is moved in relation to prevent adhesion ...