Service Manual
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...large as an integrated, single entity-the user may be selected. 2. GENERAL DESCRIPTION - I. Designed with a color toner cartridge (red, blue, green, brown); COPYRIGHT @ 1994 CANON INC. Cassette accommodating various types of paper and 2-way pick-up. • The universal cassette (about 250 sheets... cartridge for the environment. • The use of existing machines) 3. FEATURES 1. CANON PC7201740/7501770 REV.0 AUG.1994 PRINTED IN JAPAN fMPRIME AU JAPAN) 1 - 1 Separate top unit. • The copier's top unit may be opened to 1/000 of the SURF fixing mechanism enables a ...
...large as an integrated, single entity-the user may be selected. 2. GENERAL DESCRIPTION - I. Designed with a color toner cartridge (red, blue, green, brown); COPYRIGHT @ 1994 CANON INC. Cassette accommodating various types of paper and 2-way pick-up. • The universal cassette (about 250 sheets... cartridge for the environment. • The use of existing machines) 3. FEATURES 1. CANON PC7201740/7501770 REV.0 AUG.1994 PRINTED IN JAPAN fMPRIME AU JAPAN) 1 - 1 Separate top unit. • The copier's top unit may be opened to 1/000 of the SURF fixing mechanism enables a ...
Service Manual
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...the open the body. Replacing the Cartridge." 1 - 16 COPYRIGHT © 1994 CANONINC. Preface Thank you (of toner, the copy image will tend to tam ,;an. A.1.•. :anon copier. If the copy image has returned to normal, • Advise the user that, although he/she may continue... shown in Figure 1-410. 2. to ensure sal( in the copier, and make a copy. Figure 1-414 2) Slide the old cartridge out of use the cartridge, a new cartridge should be obtained. a. Replacing the Cartridge 1. CANON PC720840r/501770 REV.OAUG.1994 PRINTEDIN JAPAN0MPRIMEAU JAPON) If the copy...
...the open the body. Replacing the Cartridge." 1 - 16 COPYRIGHT © 1994 CANONINC. Preface Thank you (of toner, the copy image will tend to tam ,;an. A.1.•. :anon copier. If the copy image has returned to normal, • Advise the user that, although he/she may continue... shown in Figure 1-410. 2. to ensure sal( in the copier, and make a copy. Figure 1-414 2) Slide the old cartridge out of use the cartridge, a new cartridge should be obtained. a. Replacing the Cartridge 1. CANON PC720840r/501770 REV.OAUG.1994 PRINTEDIN JAPAN0MPRIMEAU JAPON) If the copy...
Service Manual
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...}Developing Magnet cylinder ... DC bias Positive component Negative component Figure 2-109 2 - 4 COPYRIGHT © 1994 CANON INC. the resulting bias is a one-component toner (for both AC bias and DC bias (negative component) at the same time; Blade Depositing roller 1T1 Figure 2-107 (...insulating characteristics and becomes positively charged by the friction between the rotating developing cylinder and a blade, where it . The copier's toner is called developing bias. MN COPYING PROCESS E. For this reason, the negative component of the developing bias is charged ...
...}Developing Magnet cylinder ... DC bias Positive component Negative component Figure 2-109 2 - 4 COPYRIGHT © 1994 CANON INC. the resulting bias is a one-component toner (for both AC bias and DC bias (negative component) at the same time; Blade Depositing roller 1T1 Figure 2-107 (...insulating characteristics and becomes positively charged by the friction between the rotating developing cylinder and a blade, where it . The copier's toner is called developing bias. MN COPYING PROCESS E. For this reason, the negative component of the developing bias is charged ...
Service Manual
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... both the transfer charging roller and the photosensitive drum. The copier turns the transfer voltage to positive during post rotation to return the positively charged toner adhering to the transfer roller to the photosensitive drum. The copier uses a roller transfer system, which has the following advantages ...to the copy paper. A DC bias affects copy density and the degree of a jam or the like. F. COPYRIGHT 1994 CANON INC. ging. Reference: Toner may collect on the transfer roller if the image on the photosensitive drum fails to transfer to the copy paper because of fogging...
... both the transfer charging roller and the photosensitive drum. The copier turns the transfer voltage to positive during post rotation to return the positively charged toner adhering to the transfer roller to the photosensitive drum. The copier uses a roller transfer system, which has the following advantages ...to the copy paper. A DC bias affects copy density and the degree of a jam or the like. F. COPYRIGHT 1994 CANON INC. ging. Reference: Toner may collect on the transfer roller if the image on the photosensitive drum fails to transfer to the copy paper because of fogging...
Service Manual
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.... Thin paper, however, has low rigidity and can wrap around the photosensitive drum. CANON PC720,740/750i770 REY.0 AUG.1994 PRINTEDIN JAPAN DIARIME AU JAPON) The fixing heater is why the copier's fixing assembly does not have a cleaning mechanism. MI COPYING PROCESS G. this is... of the fixing heater and serves to make sure that melting toner will not stick to a specific temperature. 2 - 6 COPYRIGHT © 1994 CANON INC. Fixing (step 6) Copy paper O Fixing heater Thermistor Fixing film Toner Static eliminator Figure 2-112 Copy paper is separated from the photosensitive...
.... Thin paper, however, has low rigidity and can wrap around the photosensitive drum. CANON PC720,740/750i770 REY.0 AUG.1994 PRINTEDIN JAPAN DIARIME AU JAPON) The fixing heater is why the copier's fixing assembly does not have a cleaning mechanism. MI COPYING PROCESS G. this is... of the fixing heater and serves to make sure that melting toner will not stick to a specific temperature. 2 - 6 COPYRIGHT © 1994 CANON INC. Fixing (step 6) Copy paper O Fixing heater Thermistor Fixing film Toner Static eliminator Figure 2-112 Copy paper is separated from the photosensitive...
Service Manual
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... the environment or deterio- Controlling the Transfer Roller Bias 1. b. To remove such toner, the copier applies a positive voltage at a specific timing to return the toner from the transfer roller to the transfer roller moving in reverse. • during last rotation. CANON PC720/74000770 REV.O AUG.1994 PRINTED IN JAPAN pmpFeat AU JAPAN) The transfer...
... the environment or deterio- Controlling the Transfer Roller Bias 1. b. To remove such toner, the copier applies a positive voltage at a specific timing to return the toner from the transfer roller to the transfer roller moving in reverse. • during last rotation. CANON PC720/74000770 REV.O AUG.1994 PRINTED IN JAPAN pmpFeat AU JAPAN) The transfer...
Service Manual
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OPERATIONS AND TIMINGMUM H. Figure 3-325 COPYRIGHT © 1994 CANONINC. CANON PC7208401150M0 REIM AUG.1994 PRINTEDIN JAPANoinimt AU JAPONI 3 - 35 Rear side blank exposure lamp Reflecting plate Lens travel detecting shaft Front side blank exposure lamp A + B (... the side blank exposure lamp at the front and the rear to prevent adhesion of the lens as measured by the lens travel distance of toner to the drum when reduced copies are made. 2. Operation The side blank exposure lamp moves based on the travel detecting shaft for reduced copies for...
OPERATIONS AND TIMINGMUM H. Figure 3-325 COPYRIGHT © 1994 CANONINC. CANON PC7208401150M0 REIM AUG.1994 PRINTEDIN JAPANoinimt AU JAPONI 3 - 35 Rear side blank exposure lamp Reflecting plate Lens travel detecting shaft Front side blank exposure lamp A + B (... the side blank exposure lamp at the front and the rear to prevent adhesion of the lens as measured by the lens travel distance of toner to the drum when reduced copies are made. 2. Operation The side blank exposure lamp moves based on the travel detecting shaft for reduced copies for...
Service Manual
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...in the opposite direction will not cause any practical problems; COPYRIGHT © 1994 CANON INC. Removing the Transfer Charging Roller 1) Open the copier's top unit. 2) Remove the screw T. 1) Open the copier's top body, and remove the cartridge. 2) Put the cartridge upside down,...to limit the exposure of the drum using a cloth coated with toner. Figure 4-503 Caution: Do not touch the roller surface; MECHANICAL SYSTEM! 2. Transfer corona Assembly 1. Rotating it rotates when making copies. CANON PC720f7401750/710 REV.O AUG.1994 PRINTEDIN JAPAN1IMPRIME AUJAPON) 4 - 29...
...in the opposite direction will not cause any practical problems; COPYRIGHT © 1994 CANON INC. Removing the Transfer Charging Roller 1) Open the copier's top unit. 2) Remove the screw T. 1) Open the copier's top body, and remove the cartridge. 2) Put the cartridge upside down,...to limit the exposure of the drum using a cloth coated with toner. Figure 4-503 Caution: Do not touch the roller surface; MECHANICAL SYSTEM! 2. Transfer corona Assembly 1. Rotating it rotates when making copies. CANON PC720f7401750/710 REV.O AUG.1994 PRINTEDIN JAPAN1IMPRIME AUJAPON) 4 - 29...
Service Manual
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A. Make sure that the conditions in the copier, and its properties change rapidly; Avoid areas subject to 104°F Humidity 90% or less Table 6-402 Conditions (transportation) B. Keep the cartridge at the workshop ... to shocks or drop it is too high or too low or where such environmental factors change over time. CANON PC720.74011501T1R0EV.0 AUG.1994 PRINTEDIN JAPAN (IMPRIME-AUJAPON) The cartridge also contains toner, and it . The cartridge should never be placed under the sun or inside a car for storage. 1. c. avoid areas subject...
A. Make sure that the conditions in the copier, and its properties change rapidly; Avoid areas subject to 104°F Humidity 90% or less Table 6-402 Conditions (transportation) B. Keep the cartridge at the workshop ... to shocks or drop it is too high or too low or where such environmental factors change over time. CANON PC720.74011501T1R0EV.0 AUG.1994 PRINTEDIN JAPAN (IMPRIME-AUJAPON) The cartridge also contains toner, and it . The cartridge should never be placed under the sun or inside a car for storage. 1. c. avoid areas subject...
Service Manual
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... soiled the surface of time can still lead to touch the photosensitive drum. Reference: If the drum is susceptible to even out the toner inside it or use solvent. CANON PC720174011501770 REV.0 AUG.1994 PRINTER IN JAPAN (IMPRIME AU JAPONI 6 - 3 MAINTENANCE AND SERVICING 2. Handling a. Do not shake the ...period of the photosensitive drum by residual memory on the copies as toner runs out, hold the cartridge level as 10,000 to vibration or shocks. d. f. Do not dry wipe it . Before setting the cartridge to the copier or if white spots appear on the drum; e. Do not ...
... soiled the surface of time can still lead to touch the photosensitive drum. Reference: If the drum is susceptible to even out the toner inside it or use solvent. CANON PC720174011501770 REV.0 AUG.1994 PRINTER IN JAPAN (IMPRIME AU JAPONI 6 - 3 MAINTENANCE AND SERVICING 2. Handling a. Do not shake the ...period of the photosensitive drum by residual memory on the copies as toner runs out, hold the cartridge level as 10,000 to vibration or shocks. d. f. Do not dry wipe it . Before setting the cartridge to the copier or if white spots appear on the drum; e. Do not ...