JPH01169554U

JPH01169554U -

Info

Publication number: JPH01169554U
Application number: JP6550588U
Authority: JP
Priority date: 1988-05-18
Filing date: 1988-05-18
Publication date: 1989-11-30

Description

[Brief explanation of the drawing]

第１図ａ及び第１図ｂは夫々本考案の一実施例
としての光書込みプリンタにおける要部の構成と
動作を示す各模式的断面図、第２図は更に上記要
部の詳細構成を示す構成説明図、第３図は上記光
書込みプリンタにおける内部ユニツト装置の着脱
動作を示す斜視図、第４図は上記光書込みプリン
タの全体構成を示す模式図、第５図ａ及び第５図
ｂは夫々従来技術による搬送ロール圧接機構の構
成と動作を示す各説明図である。１……感光体ドラム、４……現像器、４ｂ……
突起部、１６……待機ロール対、１６ａ……駆動
ロール、１６ｂ……従動コロ、１９，２０……上
、下ガイド板、２２……ロール軸受、２３……コ
ロ軸受、２４……圧接部材、２４ａ……コイルバ
ネ、２４ｃ……係合パツド、Ｕ_１……現像器ユニ
ツト、Ｕ_２……ドラムユニツト。 1a and 1b are schematic cross-sectional views showing the configuration and operation of the main parts of an optical writing printer as an embodiment of the present invention, and FIG. 2 further shows the detailed structure of the above-mentioned main parts. 3 is a perspective view showing the attachment and detachment operation of the internal unit device in the optical writing printer, FIG. 4 is a schematic diagram showing the overall configuration of the optical writing printer, and FIGS. 5a and 5b are FIG. 3 is an explanatory diagram showing the configuration and operation of a conveyance roll pressure contact mechanism according to the prior art. 1... Photosensitive drum, 4... Developing device, 4b...
Projection, 16... Standby roll pair, 16a... Drive roll, 16b... Driven roller, 19, 20... Upper and lower guide plates, 22... Roll bearing, 23... Roller bearing, 24... Pressing member , 24a...Coil spring, 24c...Engagement pad, _U1 ...Developer unit, _U2 ...Drum unit.

Claims

[Scope of utility model registration request]

It consists of an internal unit that is detachable from the mounting main body, a drive roll, and a driven roll that is in rolling contact with the drive roll, and the pressure contact force between the two rolls is variably supported, and the paper fed from the paper feed section is held between the two rolls. When the pair of conveyor rolls to be conveyed and the internal unit are attached to the apparatus main body, they engage with the internal unit to bring both rolls of the pair of conveyor rolls into pressure contact, and the internal unit is removed from the apparatus main body. and a biasing member that releases the pressure contact state of the pair of transport rolls when the pair of transport rolls is in contact with each other.