Canon IRC 3380i 2nd copy/print lead edge off

[tech28]

When making copies, from any one the trays 1-4, all paper sizes, bypass, the second, third copy, lead edge is off by 1.5 inches. Checked registration setting, its at -5, going to return tomorrow, thinking finisher problem, actuator on finisher. It can staple fine when running mutiples, but lead edge is off. When just running copies, 3-4 copies, it will jam after the 2 or 3rd copy. Anyone run into this problem? Thanks.

[teckat]

Re: Canon IRC 3380i 2nd copy/print lead edge off

When making copies, from any one the trays 1-4, all paper sizes, bypass, the second, third copy, lead edge is off by 1.5 inches. Checked registration setting, its at -5, going to return tomorrow, thinking finisher problem, actuator on finisher. It can staple fine when running mutiples, but lead edge is off. When just running copies, 3-4 copies, it will jam after the 2 or 3rd copy. Anyone run into this problem? Thanks.

Jam CODE ?
Reg Clutch_!

[tech28]

Re: Canon IRC 3380i 2nd copy/print lead edge off

1st copy always perfect, always, 2nd or 3rd or any copy thereafter 2 inches off, no variation what so ever. Dead nuts on. Sometimes it will get 3-5 copies thru, with the lead edge off. When you use the stapling feature, it will run the process with the copies lead edge off, but it will run the entire process with out jamming. Did remove Z sorter off machine(thinking that was issue) still the same. Did not get jam code. Machine will say, " Check media type"

[teckat]

Re: Canon IRC 3380i 2nd copy/print lead edge off

It's all about the read\write x\y start position on document.
You get no jams because there is no delay throughout paper passage from pickup > transport> to delivery.

Check Media Type_?
Do u have Auto Tray Switching "on"_?

This registration issue, is it on glass copying or network prints or both_?

[Canuck]

Re: Canon IRC 3380i 2nd copy/print lead edge off

3380? Registration sensor actuator wears down and messes up timing or it is hanging up(damper sticky). 3480 has a metal clip on it to prevent wear

[tech28]

Re: Canon IRC 3380i 2nd copy/print lead edge off

This one does have the metal cover(registration lever) Did check lever movement(1st thing) Lead edge is off from both copy and print. Auto tray switching off.

[teckat]

Re: Canon IRC 3380i 2nd copy/print lead edge off

This one does have the metal cover(registration lever) Did check lever movement(1st thing) Lead edge is off from both copy and print. Auto tray switching off.

The machine executes synchronization in sub scanning direction so as to match the lead edge of an image and the lead edge of paper. This control is executed for
every color, and is controlled by the DC controller.

Registration Unit
The registration clutch (CL6) is located between the registration roller and the registration multi motor, and it controls ON/OFF of the registration roller in order to match a paper and an image on the drum at the predetermined registration point.

Control of Registration Unit
In this machine, it is controlled to turn OFF the pickup motor (in case of cassette pickup), manual feeder pickup clutch (in case of manual feeder pickup), and the duplexing feeding motor (in case of duplexing re-pickup) to make papers stop at the point where the distance from the pre-registration sensor to the registration roller (19.9 mm) + predetermined registration arching (cassette/duplexing: 3 mm, manual feed: 5.5 mm) are added after the pre-registration sensor detects the leading edge.
When executing the accelerated pickup (300 mm/sec), decelerate to 200 mm/sec when the pre-registration sensor turns ON.
When the registration clutch turns ON, the registration roller starts to rotate and feeds paper to the secondary transfer assembly.
The registration clutch is turned OFF either after a paper is fed the predetermined amount (paper length + 50ms) or when the next paper turns ON the pre-registration sensor.



" Check media type"
one transparency sensor is used for material difference detection.


The transparency sensor is allocated at the almost same position of the pre-registration sensor (a point where 21.5 mm upstream from the registration roller) on the feeding path.
(In addition, the pre-registration sensor is allocated at the point where 19.9 mm upstream from the registration roller.)
The transparency sensor is comprised of 2 PCBs of LED; the light emission area (UN18) and the light reception area (UN19).

In this machine, the material difference is detected according to the transmittance of material being fed. The transmittance of material is calculated according to the
sensor output (reference value A) under the condition that no shielding material presents at the transparency sensor, and the sensor output (measured value B) under
the condition that a fed material presents.


even though u have Plain Paper selected/ this sensor may not be functioning properly ( Material Difference Jam Detection ) ?