Canon Kabushiki Kaisha

Masahiro Koshikawa

Yuki Igarashi

Takayuki Nishinohara

Shuuichi Masuda

A method includes determining, if power to an apparatus is turned on, whether a state of a sheet has been changed while the power is off, based on a change of the sheet state before turn-off and after turn-on of the power, and performing control to perform initializing operations according to a result of the determination.

Printing apparatus and method for controlling sheet processing apparatus

In a printing apparatus with a unit for performing a post processing after printing, visibility and operability from the downstream side can be improved. The printing apparatus includes a first unit configured to perform printing on a sheet; and a second unit configured to perform a predetermined process for the sheet, the second unit being capable of shifting between a first position and a second position. A part of the second unit becomes a support of the sheet for printing by the first unit when the second unit is in the first position, and the part does not become the support when the second unit is in the second position.

Printing apparatus

An ink jet recording apparatus is equipped with an upstream side conveyance unit arranged on a conveyance upstream side of a recording head and a downstream side conveyance unit arranged on a conveyance downstream side thereof. The ink jet recording apparatus obtains, by recording a test pattern on a sheet, a conveyance correction amount when conveyance is performed solely by the downstream side conveyance unit. The ink jet recording apparatus includes a control unit which, when effecting an arbitrary recording, effects control such that, when a sheet trailing edge leaves the upstream side conveyance unit, a rotating position of a drive side roller of the downstream side conveyance unit is the same as the rotating position of the drive side roller when the test pattern is recorded.

Ink jet recording apparatus

An ink jet printing apparatus is provided which prevents a jam and a head-medium rubbing during a double-sided printing and which can reduce a time required for the printing. The standby time from when the printing on the first print surface of a print medium is completed until the printing on the second print surface starts is set according to the amount of ink applied to a particular area in the first print surface of the print medium. After the set standby time elapses from the completion of the printing on the first print surface, an operation associated with the printing on the second print surface is started.

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Kawasaki, Japan

Masahiro Koshikawa