Canon CLC1000 Manuel utilisateur

COLOR LASER

COPIER

1000

SERVICE

MANUAL

REVISION 1 MAY 1997

Canon

FY8-13E3-010

CANON CLC 1000 REV. 1 MAY 1997 PRINTED IN JAPAN

1. GENERAL DESCRIPTION

FEATURES

Turns out as many as 30 copies per minute (both full-color and black-and white).

The newly developed mechanism of four photosensitive drums processes

copies every minute.

SOOO-sheet

large capacity paper source.

The addition of two cassettes (holding 500 sheets each) and a paper deck (4000 sheets) offers a

source ready to supply 5000 sheets of paper.

Automatic duplexing mechanism.

The built-in duplexing unit enables automatic copying on both sides of sheets.

Paper of up to 209 g.

Postcards and other materials of heavy stock may be used for copying.

Various creative functions.

In addition to such basic creative functions as editing of hue and brightness, installation of the ED

Board Al provides such complex creative functions as framing, gradation, and freehand.

Full line-up of options.

A large number of options are designed for the

CLClOOO,

including the Preview Monitor,

PDF,

and

IPU-II.

1997 CANON INC. CANON

CLClOOO

REV.1 MAY 1997 PRINTED IN JAPAN (IMPRIME AU

JAPON)

1-l

1. GENERAL DESCRIPTION

External delivery roller

Internal delivery roller

No. 2 mirror mount

Upper fixing web

Scanning lamp

Upper fixing roller

Oil applying roller

Lower fixing roller

Pre-fixing feeding assembly

Pre-separation/fixing charging assembly

Image position correction CCD unit

Lens

Bk BD sensor

CCD

Bk image position correction mirror

Bk No. 3 mirror

C image position correction mirror

C BD mirror

C No. 3 mirror

Internal static eliminating roller

Polygon mirror/monitor

M No. 3 mirror

M BD sensor

M image position correction mirror

No. 3 mirror

Y image position correction mirror

Y BD mirror

Registration roller

Thick paper detection roller

Multifeeder feeding roller

Multifeeder pick-up roller

Multifeeder tray

Delivery vertical path roller

Duplexing reversal inlet roller

Lower fixing roller web

Duplexing reversal feeding roller

Duplexing reversal outlet roller

Waste toner box

Pre-duplexing feeding assembly

Transfer belt

Transfer cleaning blade

Transfer belt cleaning web

Cassette 2

Duplexing unit

Polishing roller

Oil removing roller

Cassette 1

Pick-up roller

Feeding roller

Separation roller

Pick-up vertical path roller

Paper deck separation roller

Paper deck feeding roller

Paper deck pick-up roller

Pre-exposure lamp

Pre-primary charging assembly

Photosensitive drum cleaner

SALT sensor

Primary charging assembly

Potential sensor

Developing assembly

Photosensitive drum

Transfer charging assembly

1997 CANON INC.

CANON

CLClLlOO

REVlMAY1997

PRlNTEOINJAPAN(IhlPRIhlEAUJAPON)

l-13

1. GENERAL DESCRIPTION

C. Control Panel

Figure l-404

Key

Extended Copying Mode

keys

Message display

Description

Press the appropriate key to

select a specific copying mode.

Indicates the selected copying

mode or provides instructions.

Remarks

Reset key

Press it to cancel the selected

copying mode, thereby returning

to standard mode.

Stop key

Press it to stop continuous

copying.

Pre-Heat key

Press it to start pre-heating

mode or to stop it.

Interrupt key

Press it to suspend on-going

copying and to make a copy.

Start key

Clear key

Press it to start copying.

Press it to change the copy

count or settings.

ID key

Call key

Press it to start ID mode.

Press it to recall up to three

previous copying modes. A press on the key starts ID

mode, rejecting subsequent

copying commands without

input of an ID.

Pilot lamp

Glows green when power is

turned on.

Table l-401

1-14 COPYRIGHT

1997 CANON INC. CANON

CLClOOO

REV.1 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)

instructions to the User

When making two-sided copies in manual

mode, it is important to correct the curling on

the leading edge by reversing the direction of

the curl.

The transfer medium may be any of the fol-

lowing five types:

Plain paper: regular copy paper (80 to

105

g/m2)

Thin paper: paper thinner than plain

paper (64 to 79

g/m2)

Thick paper:

paper thicker than plain

paper (106 to 163

g/m2)

Extra thick paper: thicker than thick paper

(164 to 209

g/m2)

Transparency: transparency film

Special paper 1: Paper identified as such on

package

Special paper 2: Paper identified as such on

package

Points to Note about Transparencies

Avoid contact with the’ copying side, by

holding at the edge.

Fan out each stack before setting it in a

cassette or the multifeeder.

Remove from the tray immediately after

copying to avoid jamming.

Keep unused transparencies in a box, and

store them avoiding high temperature and

humidity.

Points to Note about the Orientation of

Transparencies

lOrient each transparency so that it is fed in

the correct direction.

When Placing in a Cassette,

lIf vertical, orient it so that the white triangle

at the corner is front left

lIf horizontal, orient it so that the white trian-

gle at the corner is front right

Figure l-405

GENERAL

DESCRIPTJON

nPlacing on the Manual Feed Tray

lIf vertical, orient it so that the white triangle

is front right

lIf horizontal, orient it so that the white trian-

gle is front left

Figure l-406

5. Cassette Sheet

In a high humidity environment, paper is like-

ly to become moist and will adversely affect

copying operation. If such is the case, advise

the user to place the cassette sheet on the

bottom of the cassette tray.

1997 CANON INC. CANON

CLClOOO

REV.1 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)

l-15

IMAGE FORMATION

A. Outline

Original exposure block

-\I-...

Lens&CD

Laser unit

Fixina

ass

Separation

(

flG=__,

Pre-f’

axing

t-l.._

II..:_

chargiqc

rancfor

halt

dnzaninn

umh

Transfer belt

-I

Pre-duplexing

feeding

casse-

Cassew'

Transfer blade

Transfer belt

Figure 2-101

deck

lM7

CANON INC.

CANON CCC1000 REV.1 MAY

1997

PRINTED IN JAPAN

(IMPRIME

AU JAPON)

2-l

2. COPYING PROCESS

For each process color, the CLClOOO uses

one set of components; i.e., photosensitive drum,

developing assembly, cleaning unit. (In other

words, four sets are used for full color reproduc-

tion.)

The

CLClOOO’s

photosensitive drum consists

of a photo-conductive layer on the other side

(OPC) and a conductive aluminum substrate on

the inside.

The CLClOOO differs from black-and-white

copiers for the following:

Light is shined on a color original, and the

reflected light is separated by filters into the three

primary colors of light for conversion by a CCD.

Using analog video signals (RGB) from the

CCD, video signals are generated for each

process color (YMCK) to drive a semiconductor

laser.

A laser beam is directed to the appropriate

photosensitive drum to develop the image repre-

senting the corresponding process color (of toner;

complementary to the corresponding filter) for

transfer to copy paper; the step is executed alike

for Y, M, C, and K.

The resulting image is fixed to the paper, pro-

ducing a color copy of the original.

The CLCl

000

uses four photosensitive drums

for transfer of images to copy paper, and a trans-

fer belt is used to ensure that copy paper is

moved horizontally under each photosensitive

drum for transfer

The image formation block consists of the fol-

lowing eight steps:

Step 1

Pre-exposure

Step 2 Primary charging

Step 3 Laser exposure

Step 4 Development

Step 5 Retention/transfer

Step 6 Separation

Step 7 Fixing

Step 8 Photosensitive drum cleaning

Auxiliary processes include pre-primary charg-

ing, pre-fixing charging, and transfer belt clean-

ing/static elimination.

(___________________________..____

;

Static Latent Image Formation Block

8. Drum cleaning

Figure 2-102

2-2

1997 CANON INC. CANON CLClOOO REV.1 MAY 1997 PRINTED IN JAPAN (IMPRIME AU

JAPON)

2. COPYING PROCESS

Static Latent Image

Formation Block

This block consists of three steps and ulti-

mately leaves negative charges in the areas of

the photosensitive drum representing the white

(light) areas of the original, while neutralizing the

charges in the areas representing the black (dark)

areas of the original.

Such an image created on the photosensitive

drum using differences in potential is not visible to

the human eye and is called a static latent image.

Time (t)

c-_..

_-____

“L

I’

Light area

:’

(exposed to laser)

8’

Dark area

(white on original)

Pre-exposure Primary charging Image

expose

(step

(step 3)

Figure 2-103

C. Pre-Exposure (step 1)

Photosensitive

Figure

2-l

In preparation for primary charging, the light

from the pre-exposure lamp is directed to the sur-

face of the photosensitive drum to remove resid-

ual charges, thereby preventing uneven copy den-

sity.

COPYRlGHTQ1997 CANONINC. CANONCLClOOOREV.1MAY1997

PRlNTEOINJAPAN(lMPRlME

AUJAPON)

2-3

2. COPYING PROCESS

D. Primary Charging (step 2)

Figure 2-105

The negative corona of the primary charging

assembly charges the surface of the photosensi-

tive drum to a uniform negative potential, estab-

lishing primary potential.

Since the surface potential of the charged pho-

tosensitive drum is determined by the potential of

the grid, a bias is applied to the grid to ensure a

specific drum surface potential.

E. Laser

Exposure (step

Laser beam

Dark area Light area

Figure 2-l 06

A laser beam of an intensity suited to the

image density of the original is directed to the sur-

face of the photosensitive drum, thereby neutral-

izing the charges on the surface. Such areas are

called the light areas of the photosensitive drum

and will later attract toner in step 4 (development).

2-4

1997 CANON INC. CANON

CLClOOO

REV.1 MAY 1997 PRINTED IN JAPAN (IMPRIME AU

JAPON)

2. COPYING PROCESS

F. Development (step 4)

Blade

Stray-toner collecting electrode

Figure 2-107

The process in which the latent static image on

the surface of the photosensitive drum is turned

into a visible image is called development.

Since the

CL0000

is designed so that the

areas on the surface of the photosensitive drum

exposed to a laser beam will attract toner, the

toner is charged to a negative potential (the same

potential as in primary charging).

As shown in Figure 2-107, the developing

assembly consists of a developing cylinder and a

magnetic blade. The developing cylinder in turn

consists of a fixed magnet and a cylinder which

rotates around the magnet.

The developer is composed of toner (mainly

resins and dye) and carrier (iron powder) mixed at

a specific ratio. The toner and the carrier are

charged to a negative and a positive potential,

respectively, by friction against the rotating cylin-

der.

The developer is held in the form of a brush

over the surface of the cylinder within the mag-

netic field of the fixed magnet, and is deposited in

a uniform layer by a blade.

Figure 2-l

Double blanking pulses and a DC bias (nega-

tive component) are applied to the developing

cylinder to improve development efficiency and

reproduction of highlighted areas, resulting in a

developing bias with a larger negative than posi-

tive component.

During copying, toner is attracted to the light

areas of the photosensitive drum because of the

drum surface potential and the negative potential

of the developing bias, turning the latent static

image into a visible image. Excess toner is then

repelled by the photosensitive drum because of

the drum surface potential and the positive com-

ponent of the developing bias.

The electrode plate under the developing

cylinder is supplied with a high voltage (positive)

to attract stray toner, thereby preventing soiling of

the inside of the machine.

1997 CANON INC. CANON

CLClOOO

REV.1 MAY 1997 PRINTED IN JAPAN (IMPAIME AU JAPON) 2-5

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